| // basisu_uastc_enc.cpp | |
| // Copyright (C) 2019-2026 Binomial LLC. All Rights Reserved. | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at | |
| // | |
| // http://www.apache.org/licenses/LICENSE-2.0 | |
| // | |
| // Unless required by applicable law or agreed to in writing, software | |
| // distributed under the License is distributed on an "AS IS" BASIS, | |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| // See the License for the specific language governing permissions and | |
| // limitations under the License. | |
| #include "basisu_uastc_enc.h" | |
| #include "basisu_gpu_texture.h" | |
| #include "basisu_bc7enc.h" | |
| #ifdef _DEBUG | |
| // When BASISU_VALIDATE_UASTC_ENC is 1, we pack and unpack to/from UASTC and ASTC, then validate that each codec returns the exact same results. This is slower. | |
| #define BASISU_VALIDATE_UASTC_ENC 1 | |
| #endif | |
| #define BASISU_SUPPORT_FORCE_MODE 0 | |
| using namespace basist; | |
| namespace basisu | |
| { | |
| const uint32_t MAX_ENCODE_RESULTS = 512; | |
| #if BASISU_VALIDATE_UASTC_ENC | |
| static void validate_func(bool condition, int line) | |
| { | |
| if (!condition) | |
| { | |
| fprintf(stderr, "basisu_uastc_enc: Internal validation failed on line %u!\n", line); | |
| } | |
| } | |
| #define VALIDATE(c) validate_func(c, __LINE__); | |
| #else | |
| #define VALIDATE(c) | |
| #endif | |
| enum dxt_constants | |
| { | |
| cDXT1SelectorBits = 2U, cDXT1SelectorValues = 1U << cDXT1SelectorBits, cDXT1SelectorMask = cDXT1SelectorValues - 1U, | |
| cDXT5SelectorBits = 3U, cDXT5SelectorValues = 1U << cDXT5SelectorBits, cDXT5SelectorMask = cDXT5SelectorValues - 1U, | |
| }; | |
| struct dxt1_block | |
| { | |
| enum { cTotalEndpointBytes = 2, cTotalSelectorBytes = 4 }; | |
| uint8_t m_low_color[cTotalEndpointBytes]; | |
| uint8_t m_high_color[cTotalEndpointBytes]; | |
| uint8_t m_selectors[cTotalSelectorBytes]; | |
| inline void clear() { basisu::clear_obj(*this); } | |
| inline uint32_t get_high_color() const { return m_high_color[0] | (m_high_color[1] << 8U); } | |
| inline uint32_t get_low_color() const { return m_low_color[0] | (m_low_color[1] << 8U); } | |
| inline void set_low_color(uint16_t c) { m_low_color[0] = static_cast<uint8_t>(c & 0xFF); m_low_color[1] = static_cast<uint8_t>((c >> 8) & 0xFF); } | |
| inline void set_high_color(uint16_t c) { m_high_color[0] = static_cast<uint8_t>(c & 0xFF); m_high_color[1] = static_cast<uint8_t>((c >> 8) & 0xFF); } | |
| inline uint32_t get_selector(uint32_t x, uint32_t y) const { assert((x < 4U) && (y < 4U)); return (m_selectors[y] >> (x * cDXT1SelectorBits))& cDXT1SelectorMask; } | |
| inline void set_selector(uint32_t x, uint32_t y, uint32_t val) { assert((x < 4U) && (y < 4U) && (val < 4U)); m_selectors[y] &= (~(cDXT1SelectorMask << (x * cDXT1SelectorBits))); m_selectors[y] |= (val << (x * cDXT1SelectorBits)); } | |
| static uint16_t pack_color(const color_rgba& color, bool scaled, uint32_t bias = 127U) | |
| { | |
| uint32_t r = color.r, g = color.g, b = color.b; | |
| if (scaled) | |
| { | |
| r = (r * 31U + bias) / 255U; | |
| g = (g * 63U + bias) / 255U; | |
| b = (b * 31U + bias) / 255U; | |
| } | |
| return static_cast<uint16_t>(basisu::minimum(b, 31U) | (basisu::minimum(g, 63U) << 5U) | (basisu::minimum(r, 31U) << 11U)); | |
| } | |
| static uint16_t pack_unscaled_color(uint32_t r, uint32_t g, uint32_t b) { return static_cast<uint16_t>(b | (g << 5U) | (r << 11U)); } | |
| }; | |
| #define UASTC_WRITE_MODE_DESCS 0 | |
| static inline void uastc_write_bits(uint8_t* pBuf, uint32_t& bit_offset, uint64_t code, uint32_t codesize, const char* pDesc) | |
| { | |
| (void)pDesc; | |
| #if UASTC_WRITE_MODE_DESCS | |
| if (pDesc) | |
| printf("%s: %u %u\n", pDesc, bit_offset, codesize); | |
| #endif | |
| assert((codesize == 64) || (code < (1ULL << codesize))); | |
| while (codesize) | |
| { | |
| uint32_t byte_bit_offset = bit_offset & 7; | |
| uint32_t bits_to_write = basisu::minimum<int>(codesize, 8 - byte_bit_offset); | |
| pBuf[bit_offset >> 3] |= (code << byte_bit_offset); | |
| code >>= bits_to_write; | |
| codesize -= bits_to_write; | |
| bit_offset += bits_to_write; | |
| } | |
| } | |
| void pack_uastc(basist::uastc_block& blk, const uastc_encode_results& result, const etc_block& etc1_blk, uint32_t etc1_bias, const eac_a8_block& etc_eac_a8_blk, bool bc1_hint0, bool bc1_hint1) | |
| { | |
| if ((g_uastc_mode_has_alpha[result.m_uastc_mode]) && (result.m_uastc_mode != UASTC_MODE_INDEX_SOLID_COLOR)) | |
| { | |
| assert(etc_eac_a8_blk.m_multiplier >= 1); | |
| } | |
| uint8_t buf[32]; | |
| memset(buf, 0, sizeof(buf)); | |
| uint32_t block_bit_offset = 0; | |
| #if UASTC_WRITE_MODE_DESCS | |
| printf("**** Mode: %u\n", result.m_uastc_mode); | |
| #endif | |
| uastc_write_bits(buf, block_bit_offset, g_uastc_mode_huff_codes[result.m_uastc_mode][0], g_uastc_mode_huff_codes[result.m_uastc_mode][1], "mode"); | |
| if (result.m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) | |
| { | |
| uastc_write_bits(buf, block_bit_offset, result.m_solid_color.r, 8, "R"); | |
| uastc_write_bits(buf, block_bit_offset, result.m_solid_color.g, 8, "G"); | |
| uastc_write_bits(buf, block_bit_offset, result.m_solid_color.b, 8, "B"); | |
| uastc_write_bits(buf, block_bit_offset, result.m_solid_color.a, 8, "A"); | |
| uastc_write_bits(buf, block_bit_offset, etc1_blk.get_diff_bit(), 1, "ETC1D"); | |
| uastc_write_bits(buf, block_bit_offset, etc1_blk.get_inten_table(0), 3, "ETC1I"); | |
| uastc_write_bits(buf, block_bit_offset, etc1_blk.get_selector(0, 0), 2, "ETC1S"); | |
| uint32_t r, g, b; | |
| if (etc1_blk.get_diff_bit()) | |
| etc_block::unpack_color5(r, g, b, etc1_blk.get_base5_color(), false); | |
| else | |
| etc_block::unpack_color4(r, g, b, etc1_blk.get_base4_color(0), false); | |
| uastc_write_bits(buf, block_bit_offset, r, 5, "ETC1R"); | |
| uastc_write_bits(buf, block_bit_offset, g, 5, "ETC1G"); | |
| uastc_write_bits(buf, block_bit_offset, b, 5, "ETC1B"); | |
| memcpy(&blk, buf, sizeof(blk)); | |
| return; | |
| } | |
| if (g_uastc_mode_has_bc1_hint0[result.m_uastc_mode]) | |
| uastc_write_bits(buf, block_bit_offset, bc1_hint0, 1, "BC1H0"); | |
| else | |
| { | |
| assert(bc1_hint0 == false); | |
| } | |
| if (g_uastc_mode_has_bc1_hint1[result.m_uastc_mode]) | |
| uastc_write_bits(buf, block_bit_offset, bc1_hint1, 1, "BC1H1"); | |
| else | |
| { | |
| assert(bc1_hint1 == false); | |
| } | |
| uastc_write_bits(buf, block_bit_offset, etc1_blk.get_flip_bit(), 1, "ETC1F"); | |
| uastc_write_bits(buf, block_bit_offset, etc1_blk.get_diff_bit(), 1, "ETC1D"); | |
| uastc_write_bits(buf, block_bit_offset, etc1_blk.get_inten_table(0), 3, "ETC1I0"); | |
| uastc_write_bits(buf, block_bit_offset, etc1_blk.get_inten_table(1), 3, "ETC1I1"); | |
| if (g_uastc_mode_has_etc1_bias[result.m_uastc_mode]) | |
| uastc_write_bits(buf, block_bit_offset, etc1_bias, 5, "ETC1BIAS"); | |
| else | |
| { | |
| assert(etc1_bias == 0); | |
| } | |
| if (g_uastc_mode_has_alpha[result.m_uastc_mode]) | |
| { | |
| const uint32_t etc2_hints = etc_eac_a8_blk.m_table | (etc_eac_a8_blk.m_multiplier << 4); | |
| assert(etc2_hints > 0 && etc2_hints <= 0xFF); | |
| uastc_write_bits(buf, block_bit_offset, etc2_hints, 8, "ETC2TM"); | |
| } | |
| uint32_t subsets = 1; | |
| switch (result.m_uastc_mode) | |
| { | |
| case 2: | |
| case 4: | |
| case 7: | |
| case 9: | |
| case 16: | |
| uastc_write_bits(buf, block_bit_offset, result.m_common_pattern, 5, "PAT"); | |
| subsets = 2; | |
| break; | |
| case 3: | |
| uastc_write_bits(buf, block_bit_offset, result.m_common_pattern, 4, "PAT"); | |
| subsets = 3; | |
| break; | |
| default: | |
| break; | |
| } | |
| #ifdef _DEBUG | |
| uint32_t part_seed = 0; | |
| switch (result.m_uastc_mode) | |
| { | |
| case 2: | |
| case 4: | |
| case 9: | |
| case 16: | |
| part_seed = g_astc_bc7_common_partitions2[result.m_common_pattern].m_astc; | |
| break; | |
| case 3: | |
| part_seed = g_astc_bc7_common_partitions3[result.m_common_pattern].m_astc; | |
| break; | |
| case 7: | |
| part_seed = g_bc7_3_astc2_common_partitions[result.m_common_pattern].m_astc2; | |
| break; | |
| default: | |
| break; | |
| } | |
| #endif | |
| uint32_t total_planes = 1; | |
| switch (result.m_uastc_mode) | |
| { | |
| case 6: | |
| case 11: | |
| case 13: | |
| uastc_write_bits(buf, block_bit_offset, result.m_astc.m_ccs, 2, "COMPSEL"); | |
| total_planes = 2; | |
| break; | |
| case 17: | |
| // CCS field is always 3 for dual plane LA. | |
| assert(result.m_astc.m_ccs == 3); | |
| total_planes = 2; | |
| break; | |
| default: | |
| break; | |
| } | |
| uint8_t weights[32]; | |
| memcpy(weights, result.m_astc.m_weights, 16 * total_planes); | |
| uint8_t endpoints[18]; | |
| memcpy(endpoints, result.m_astc.m_endpoints, sizeof(endpoints)); | |
| const uint32_t total_comps = g_uastc_mode_comps[result.m_uastc_mode]; | |
| // LLAA | |
| // LLAA LLAA | |
| // LLAA LLAA LLAA | |
| // RRGGBB | |
| // RRGGBB RRGGBB | |
| // RRGGBB RRGGBB RRGGBB | |
| // RRGGBBAA | |
| // RRGGBBAA RRGGBBAA | |
| const uint32_t weight_bits = g_uastc_mode_weight_bits[result.m_uastc_mode]; | |
| const uint8_t* pPartition_pattern; | |
| const uint8_t* pSubset_anchor_indices = basist::get_anchor_indices(subsets, result.m_uastc_mode, result.m_common_pattern, pPartition_pattern); | |
| for (uint32_t plane_index = 0; plane_index < total_planes; plane_index++) | |
| { | |
| for (uint32_t subset_index = 0; subset_index < subsets; subset_index++) | |
| { | |
| const uint32_t anchor_index = pSubset_anchor_indices[subset_index]; | |
| #ifdef _DEBUG | |
| if (subsets >= 2) | |
| { | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| const uint32_t part_index = astc_compute_texel_partition(part_seed, i & 3, i >> 2, 0, subsets, true); | |
| if (part_index == subset_index) | |
| { | |
| assert(anchor_index == i); | |
| break; | |
| } | |
| } | |
| } | |
| else | |
| { | |
| assert(!anchor_index); | |
| } | |
| #endif | |
| // Check anchor weight's MSB - if it's set then invert this subset's weights and swap the endpoints | |
| if (weights[anchor_index * total_planes + plane_index] & (1 << (weight_bits - 1))) | |
| { | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| const uint32_t part_index = pPartition_pattern[i]; | |
| #ifdef _DEBUG | |
| if (subsets >= 2) | |
| { | |
| assert(part_index == (uint32_t)astc_compute_texel_partition(part_seed, i & 3, i >> 2, 0, subsets, true)); | |
| } | |
| else | |
| { | |
| assert(!part_index); | |
| } | |
| #endif | |
| if (part_index == subset_index) | |
| weights[i * total_planes + plane_index] = ((1 << weight_bits) - 1) - weights[i * total_planes + plane_index]; | |
| } | |
| if (total_planes == 2) | |
| { | |
| for (int c = 0; c < (int)total_comps; c++) | |
| { | |
| const uint32_t comp_plane = (total_comps == 2) ? c : ((c == result.m_astc.m_ccs) ? 1 : 0); | |
| if (comp_plane == plane_index) | |
| { | |
| // shut up a useless gcc warning | |
| assert((c * 2 + 1) < (int)sizeof(endpoints)); | |
| if ((c * 2 + 1) < (int)sizeof(endpoints)) | |
| { | |
| std::swap(endpoints[c * 2 + 0], endpoints[c * 2 + 1]); | |
| } | |
| } | |
| } | |
| } | |
| else | |
| { | |
| for (uint32_t c = 0; c < total_comps; c++) | |
| std::swap(endpoints[subset_index * total_comps * 2 + c * 2 + 0], endpoints[subset_index * total_comps * 2 + c * 2 + 1]); | |
| } | |
| } | |
| } // subset_index | |
| } // plane_index | |
| const uint32_t total_values = total_comps * 2 * subsets; | |
| const uint32_t endpoint_range = g_uastc_mode_endpoint_ranges[result.m_uastc_mode]; | |
| uint32_t bit_values[18]; | |
| uint32_t tq_values[8]; | |
| uint32_t total_tq_values = 0; | |
| uint32_t tq_accum = 0; | |
| uint32_t tq_mul = 1; | |
| const uint32_t ep_bits = g_astc_bise_range_table[endpoint_range][0]; | |
| const uint32_t ep_trits = g_astc_bise_range_table[endpoint_range][1]; | |
| const uint32_t ep_quints = g_astc_bise_range_table[endpoint_range][2]; | |
| for (uint32_t i = 0; i < total_values; i++) | |
| { | |
| uint32_t val = endpoints[i]; | |
| uint32_t bits = val & ((1 << ep_bits) - 1); | |
| uint32_t tq = val >> ep_bits; | |
| bit_values[i] = bits; | |
| if (ep_trits) | |
| { | |
| assert(tq < 3); | |
| tq_accum += tq * tq_mul; | |
| tq_mul *= 3; | |
| if (tq_mul == 243) | |
| { | |
| tq_values[total_tq_values++] = tq_accum; | |
| tq_accum = 0; | |
| tq_mul = 1; | |
| } | |
| } | |
| else if (ep_quints) | |
| { | |
| assert(tq < 5); | |
| tq_accum += tq * tq_mul; | |
| tq_mul *= 5; | |
| if (tq_mul == 125) | |
| { | |
| tq_values[total_tq_values++] = tq_accum; | |
| tq_accum = 0; | |
| tq_mul = 1; | |
| } | |
| } | |
| } | |
| uint32_t total_endpoint_bits = 0; | |
| (void)total_endpoint_bits; | |
| for (uint32_t i = 0; i < total_tq_values; i++) | |
| { | |
| const uint32_t num_bits = ep_trits ? 8 : 7; | |
| uastc_write_bits(buf, block_bit_offset, tq_values[i], num_bits, "ETQ"); | |
| total_endpoint_bits += num_bits; | |
| } | |
| if (tq_mul > 1) | |
| { | |
| uint32_t num_bits; | |
| if (ep_trits) | |
| { | |
| if (tq_mul == 3) | |
| num_bits = 2; | |
| else if (tq_mul == 9) | |
| num_bits = 4; | |
| else if (tq_mul == 27) | |
| num_bits = 5; | |
| else //if (tq_mul == 81) | |
| num_bits = 7; | |
| } | |
| else | |
| { | |
| if (tq_mul == 5) | |
| num_bits = 3; | |
| else //if (tq_mul == 25) | |
| num_bits = 5; | |
| } | |
| uastc_write_bits(buf, block_bit_offset, tq_accum, num_bits, "ETQ"); | |
| total_endpoint_bits += num_bits; | |
| } | |
| for (uint32_t i = 0; i < total_values; i++) | |
| { | |
| uastc_write_bits(buf, block_bit_offset, bit_values[i], ep_bits, "EBITS"); | |
| total_endpoint_bits += ep_bits; | |
| } | |
| #if UASTC_WRITE_MODE_DESCS | |
| uint32_t weight_start = block_bit_offset; | |
| #endif | |
| uint32_t total_weight_bits = 0; | |
| (void)total_weight_bits; | |
| const uint32_t plane_shift = (total_planes == 2) ? 1 : 0; | |
| for (uint32_t i = 0; i < 16 * total_planes; i++) | |
| { | |
| uint32_t numbits = weight_bits; | |
| for (uint32_t s = 0; s < subsets; s++) | |
| { | |
| if (pSubset_anchor_indices[s] == (i >> plane_shift)) | |
| { | |
| numbits--; | |
| break; | |
| } | |
| } | |
| uastc_write_bits(buf, block_bit_offset, weights[i], numbits, nullptr); | |
| total_weight_bits += numbits; | |
| } | |
| #if UASTC_WRITE_MODE_DESCS | |
| printf("WEIGHTS: %u %u\n", weight_start, total_weight_bits); | |
| #endif | |
| assert(block_bit_offset <= 128); | |
| memcpy(&blk, buf, sizeof(blk)); | |
| #if UASTC_WRITE_MODE_DESCS | |
| printf("Total bits: %u, endpoint bits: %u, weight bits: %u\n", block_bit_offset, total_endpoint_bits, total_weight_bits); | |
| #endif | |
| } | |
| // MODE 0 | |
| // 0. DualPlane: 0, WeightRange: 8 (16), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 19 (192) MODE6 RGB | |
| // 18. DualPlane: 0, WeightRange: 11 (32), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 11 (32) MODE6 RGB | |
| static void astc_mode0_or_18(uint32_t mode, const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, const uint8_t *pForce_selectors = nullptr) | |
| { | |
| const uint32_t endpoint_range = (mode == 18) ? 11 : 19; | |
| const uint32_t weight_range = (mode == 18) ? 11 : 8; | |
| color_cell_compressor_params ccell_params; | |
| memset(&ccell_params, 0, sizeof(ccell_params)); | |
| ccell_params.m_num_pixels = 16; | |
| ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; | |
| ccell_params.m_num_selector_weights = (mode == 18) ? 32 : 16; | |
| ccell_params.m_pSelector_weights = (mode == 18) ? g_astc_weights5 : g_astc_weights4; | |
| ccell_params.m_pSelector_weightsx = (mode == 18) ? (const bc7enc_vec4F*)g_astc_weights5x : (const bc7enc_vec4F*)g_astc_weights4x; | |
| ccell_params.m_astc_endpoint_range = endpoint_range; | |
| ccell_params.m_weights[0] = 1; | |
| ccell_params.m_weights[1] = 1; | |
| ccell_params.m_weights[2] = 1; | |
| ccell_params.m_weights[3] = 1; | |
| ccell_params.m_pForce_selectors = pForce_selectors; | |
| color_cell_compressor_results ccell_results; | |
| uint8_t ccell_result_selectors[16]; | |
| uint8_t ccell_result_selectors_temp[16]; | |
| memset(&ccell_results, 0, sizeof(ccell_results)); | |
| ccell_results.m_pSelectors = &ccell_result_selectors[0]; | |
| ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = weight_range;// (mode == 18) ? 11 : 8; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 1; | |
| astc_results.m_partition_seed = 0; | |
| astc_results.m_cem = 8; | |
| astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; | |
| bool invert = false; | |
| if (pForce_selectors == nullptr) | |
| { | |
| int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); | |
| std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); | |
| std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); | |
| invert = true; | |
| } | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; | |
| if (invert) | |
| astc_results.m_weights[x + y * 4] = ((mode == 18) ? 31 : 15) - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = mode; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = part_err; | |
| total_results++; | |
| } | |
| } | |
| // MODE 1 | |
| // 1-subset, 2-bit indices, 8-bit endpoints, BC7 mode 3 | |
| // DualPlane: 0, WeightRange: 2 (4), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 20 (256) MODE3 or MODE5 RGB | |
| static void astc_mode1(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| color_cell_compressor_params ccell_params; | |
| memset(&ccell_params, 0, sizeof(ccell_params)); | |
| ccell_params.m_num_pixels = 16; | |
| ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; | |
| ccell_params.m_num_selector_weights = 4; | |
| ccell_params.m_pSelector_weights = g_bc7_weights2; | |
| ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params.m_astc_endpoint_range = 20; | |
| ccell_params.m_weights[0] = 1; | |
| ccell_params.m_weights[1] = 1; | |
| ccell_params.m_weights[2] = 1; | |
| ccell_params.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results; | |
| uint8_t ccell_result_selectors[16]; | |
| uint8_t ccell_result_selectors_temp[16]; | |
| memset(&ccell_results, 0, sizeof(ccell_results)); | |
| ccell_results.m_pSelectors = &ccell_result_selectors[0]; | |
| ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = 2; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 1; | |
| astc_results.m_partition_seed = 0; | |
| astc_results.m_cem = 8; | |
| astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; | |
| const uint32_t range = 20; | |
| bool invert = false; | |
| int s0 = g_astc_unquant[range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); | |
| std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); | |
| std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); | |
| invert = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; | |
| if (invert) | |
| astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 1; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = part_err; | |
| total_results++; | |
| } | |
| } | |
| static uint32_t estimate_partition2(uint32_t num_weights, uint32_t num_comps, const uint32_t* pWeights, const color_rgba block[4][4], const uint32_t weights[4]) | |
| { | |
| assert(pWeights[0] == 0 && pWeights[num_weights - 1] == 64); | |
| uint64_t best_err = UINT64_MAX; | |
| uint32_t best_common_pattern = 0; | |
| for (uint32_t common_pattern = 0; common_pattern < TOTAL_ASTC_BC7_COMMON_PARTITIONS2; common_pattern++) | |
| { | |
| const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; | |
| const uint8_t* pPartition = &g_bc7_partition2[bc7_pattern * 16]; | |
| color_quad_u8 subset_colors[2][16]; | |
| uint32_t subset_total_colors[2] = { 0, 0 }; | |
| for (uint32_t index = 0; index < 16; index++) | |
| subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; | |
| uint64_t total_subset_err = 0; | |
| for (uint32_t subset = 0; (subset < 2) && (total_subset_err < best_err); subset++) | |
| total_subset_err += color_cell_compression_est_astc(num_weights, num_comps, pWeights, subset_total_colors[subset], &subset_colors[subset][0], best_err, weights); | |
| if (total_subset_err < best_err) | |
| { | |
| best_err = total_subset_err; | |
| best_common_pattern = common_pattern; | |
| } | |
| } | |
| return best_common_pattern; | |
| } | |
| // MODE 2 | |
| // 2-subset, 3-bit indices, 4-bit endpoints, BC7 mode 1 | |
| // DualPlane: 0, WeightRange: 5 (8), Subsets: 2, CEM: 8 (RGB Direct ), EndpointRange: 8 (16) MODE1 | |
| static void astc_mode2(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) | |
| { | |
| uint32_t first_common_pattern = 0; | |
| uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS2; | |
| if (estimate_partition) | |
| { | |
| const uint32_t weights[4] = { 1, 1, 1, 1 }; | |
| first_common_pattern = estimate_partition2(8, 3, g_bc7_weights3, block, weights); | |
| last_common_pattern = first_common_pattern + 1; | |
| } | |
| for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) | |
| { | |
| const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; | |
| color_rgba part_pixels[2][16]; | |
| uint32_t part_pixel_index[4][4]; | |
| uint32_t num_part_pixels[2] = { 0, 0 }; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; | |
| part_pixel_index[y][x] = num_part_pixels[part]; | |
| part_pixels[part][num_part_pixels[part]++] = block[y][x]; | |
| } | |
| } | |
| color_cell_compressor_params ccell_params[2]; | |
| color_cell_compressor_results ccell_results[2]; | |
| uint8_t ccell_result_selectors[2][16]; | |
| uint8_t ccell_result_selectors_temp[2][16]; | |
| uint64_t total_part_err = 0; | |
| for (uint32_t part = 0; part < 2; part++) | |
| { | |
| memset(&ccell_params[part], 0, sizeof(ccell_params[part])); | |
| ccell_params[part].m_num_pixels = num_part_pixels[part]; | |
| ccell_params[part].m_pPixels = (color_quad_u8*)&part_pixels[part][0]; | |
| ccell_params[part].m_num_selector_weights = 8; | |
| ccell_params[part].m_pSelector_weights = g_bc7_weights3; | |
| ccell_params[part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights3x; | |
| ccell_params[part].m_astc_endpoint_range = 8; | |
| ccell_params[part].m_weights[0] = 1; | |
| ccell_params[part].m_weights[1] = 1; | |
| ccell_params[part].m_weights[2] = 1; | |
| ccell_params[part].m_weights[3] = 1; | |
| memset(&ccell_results[part], 0, sizeof(ccell_results[part])); | |
| ccell_results[part].m_pSelectors = &ccell_result_selectors[part][0]; | |
| ccell_results[part].m_pSelectors_temp = &ccell_result_selectors_temp[part][0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params[part], &ccell_results[part], &comp_params); | |
| total_part_err += part_err; | |
| } // part | |
| { | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = 5; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 2; | |
| astc_results.m_partition_seed = g_astc_bc7_common_partitions2[common_pattern].m_astc; | |
| astc_results.m_cem = 8; | |
| uint32_t p0 = 0; | |
| uint32_t p1 = 1; | |
| if (g_astc_bc7_common_partitions2[common_pattern].m_invert) | |
| std::swap(p0, p1); | |
| astc_results.m_endpoints[0] = ccell_results[p0].m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results[p0].m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results[p0].m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[3] = ccell_results[p0].m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[4] = ccell_results[p0].m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[5] = ccell_results[p0].m_astc_high_endpoint.m_c[2]; | |
| const uint32_t range = 8; | |
| bool invert[2] = { false, false }; | |
| int s0 = g_astc_unquant[range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); | |
| std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); | |
| std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); | |
| invert[0] = true; | |
| } | |
| astc_results.m_endpoints[6] = ccell_results[p1].m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[7] = ccell_results[p1].m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[8] = ccell_results[p1].m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[9] = ccell_results[p1].m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[10] = ccell_results[p1].m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[11] = ccell_results[p1].m_astc_high_endpoint.m_c[2]; | |
| s0 = g_astc_unquant[range][astc_results.m_endpoints[0 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[2 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[4 + 6]].m_unquant; | |
| s1 = g_astc_unquant[range][astc_results.m_endpoints[1 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[3 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[5 + 6]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0 + 6], astc_results.m_endpoints[1 + 6]); | |
| std::swap(astc_results.m_endpoints[2 + 6], astc_results.m_endpoints[3 + 6]); | |
| std::swap(astc_results.m_endpoints[4 + 6], astc_results.m_endpoints[5 + 6]); | |
| invert[1] = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t bc7_part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; | |
| uint32_t astc_part = bc7_part; | |
| if (g_astc_bc7_common_partitions2[common_pattern].m_invert) | |
| astc_part = 1 - astc_part; | |
| if (invert[astc_part]) | |
| astc_results.m_weights[x + y * 4] = 7 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 2; | |
| pResults[total_results].m_common_pattern = common_pattern; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = total_part_err; | |
| total_results++; | |
| } | |
| } | |
| } // common_pattern | |
| } | |
| // MODE 3 | |
| // 3-subsets, 2-bit indices, [0,11] endpoints, BC7 mode 2 | |
| // DualPlane: 0, WeightRange: 2 (4), Subsets: 3, CEM: 8 (RGB Direct ), EndpointRange: 7 (12) MODE2 | |
| static void astc_mode3(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) | |
| { | |
| uint32_t first_common_pattern = 0; | |
| uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS3; | |
| if (estimate_partition) | |
| { | |
| uint64_t best_err = UINT64_MAX; | |
| uint32_t best_common_pattern = 0; | |
| const uint32_t weights[4] = { 1, 1, 1, 1 }; | |
| for (uint32_t common_pattern = 0; common_pattern < TOTAL_ASTC_BC7_COMMON_PARTITIONS3; common_pattern++) | |
| { | |
| const uint32_t bc7_pattern = g_astc_bc7_common_partitions3[common_pattern].m_bc7; | |
| const uint8_t* pPartition = &g_bc7_partition3[bc7_pattern * 16]; | |
| color_quad_u8 subset_colors[3][16]; | |
| uint32_t subset_total_colors[3] = { 0, 0 }; | |
| for (uint32_t index = 0; index < 16; index++) | |
| subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; | |
| uint64_t total_subset_err = 0; | |
| for (uint32_t subset = 0; (subset < 3) && (total_subset_err < best_err); subset++) | |
| total_subset_err += color_cell_compression_est_astc(4, 3, g_bc7_weights2, subset_total_colors[subset], &subset_colors[subset][0], best_err, weights); | |
| if (total_subset_err < best_err) | |
| { | |
| best_err = total_subset_err; | |
| best_common_pattern = common_pattern; | |
| } | |
| } | |
| first_common_pattern = best_common_pattern; | |
| last_common_pattern = best_common_pattern + 1; | |
| } | |
| for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) | |
| { | |
| const uint32_t endpoint_range = 7; | |
| const uint32_t bc7_pattern = g_astc_bc7_common_partitions3[common_pattern].m_bc7; | |
| color_rgba part_pixels[3][16]; | |
| uint32_t part_pixel_index[4][4]; | |
| uint32_t num_part_pixels[3] = { 0, 0, 0 }; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t bc7_part = g_bc7_partition3[16 * bc7_pattern + x + y * 4]; | |
| part_pixel_index[y][x] = num_part_pixels[bc7_part]; | |
| part_pixels[bc7_part][num_part_pixels[bc7_part]++] = block[y][x]; | |
| } | |
| } | |
| color_cell_compressor_params ccell_params[3]; | |
| color_cell_compressor_results ccell_results[3]; | |
| uint8_t ccell_result_selectors[3][16]; | |
| uint8_t ccell_result_selectors_temp[3][16]; | |
| uint64_t total_part_err = 0; | |
| for (uint32_t bc7_part = 0; bc7_part < 3; bc7_part++) | |
| { | |
| memset(&ccell_params[bc7_part], 0, sizeof(ccell_params[bc7_part])); | |
| ccell_params[bc7_part].m_num_pixels = num_part_pixels[bc7_part]; | |
| ccell_params[bc7_part].m_pPixels = (color_quad_u8*)&part_pixels[bc7_part][0]; | |
| ccell_params[bc7_part].m_num_selector_weights = 4; | |
| ccell_params[bc7_part].m_pSelector_weights = g_bc7_weights2; | |
| ccell_params[bc7_part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params[bc7_part].m_astc_endpoint_range = endpoint_range; | |
| ccell_params[bc7_part].m_weights[0] = 1; | |
| ccell_params[bc7_part].m_weights[1] = 1; | |
| ccell_params[bc7_part].m_weights[2] = 1; | |
| ccell_params[bc7_part].m_weights[3] = 1; | |
| memset(&ccell_results[bc7_part], 0, sizeof(ccell_results[bc7_part])); | |
| ccell_results[bc7_part].m_pSelectors = &ccell_result_selectors[bc7_part][0]; | |
| ccell_results[bc7_part].m_pSelectors_temp = &ccell_result_selectors_temp[bc7_part][0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params[bc7_part], &ccell_results[bc7_part], &comp_params); | |
| total_part_err += part_err; | |
| } // part | |
| { | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = 2; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 3; | |
| astc_results.m_partition_seed = g_astc_bc7_common_partitions3[common_pattern].m_astc; | |
| astc_results.m_cem = 8; | |
| uint32_t astc_to_bc7_part[3]; // converts ASTC to BC7 partition index | |
| const uint32_t perm = g_astc_bc7_common_partitions3[common_pattern].m_astc_to_bc7_perm; | |
| astc_to_bc7_part[0] = g_astc_to_bc7_partition_index_perm_tables[perm][0]; | |
| astc_to_bc7_part[1] = g_astc_to_bc7_partition_index_perm_tables[perm][1]; | |
| astc_to_bc7_part[2] = g_astc_to_bc7_partition_index_perm_tables[perm][2]; | |
| bool invert_astc_part[3] = { false, false, false }; | |
| for (uint32_t astc_part = 0; astc_part < 3; astc_part++) | |
| { | |
| uint8_t* pEndpoints = &astc_results.m_endpoints[6 * astc_part]; | |
| pEndpoints[0] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_low_endpoint.m_c[0]; | |
| pEndpoints[1] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_high_endpoint.m_c[0]; | |
| pEndpoints[2] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_low_endpoint.m_c[1]; | |
| pEndpoints[3] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_high_endpoint.m_c[1]; | |
| pEndpoints[4] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_low_endpoint.m_c[2]; | |
| pEndpoints[5] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_high_endpoint.m_c[2]; | |
| int s0 = g_astc_unquant[endpoint_range][pEndpoints[0]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[2]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][pEndpoints[1]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[3]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(pEndpoints[0], pEndpoints[1]); | |
| std::swap(pEndpoints[2], pEndpoints[3]); | |
| std::swap(pEndpoints[4], pEndpoints[5]); | |
| invert_astc_part[astc_part] = true; | |
| } | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t bc7_part = g_bc7_partition3[16 * bc7_pattern + x + y * 4]; | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; | |
| uint32_t astc_part = 0; | |
| for (uint32_t i = 0; i < 3; i++) | |
| { | |
| if (astc_to_bc7_part[i] == bc7_part) | |
| { | |
| astc_part = i; | |
| break; | |
| } | |
| } | |
| if (invert_astc_part[astc_part]) | |
| astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 3; | |
| pResults[total_results].m_common_pattern = common_pattern; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = total_part_err; | |
| total_results++; | |
| } | |
| } | |
| } // common_pattern | |
| } | |
| // MODE 4 | |
| // DualPlane: 0, WeightRange: 2 (4), Subsets: 2, CEM: 8 (RGB Direct ), EndpointRange: 12 (40) MODE3 | |
| static void astc_mode4(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) | |
| { | |
| //const uint32_t weight_range = 2; | |
| const uint32_t endpoint_range = 12; | |
| uint32_t first_common_pattern = 0; | |
| uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS2; | |
| if (estimate_partition) | |
| { | |
| const uint32_t weights[4] = { 1, 1, 1, 1 }; | |
| first_common_pattern = estimate_partition2(4, 3, g_bc7_weights2, block, weights); | |
| last_common_pattern = first_common_pattern + 1; | |
| } | |
| for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) | |
| { | |
| const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; | |
| color_rgba part_pixels[2][16]; | |
| uint32_t part_pixel_index[4][4]; | |
| uint32_t num_part_pixels[2] = { 0, 0 }; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; | |
| part_pixel_index[y][x] = num_part_pixels[part]; | |
| part_pixels[part][num_part_pixels[part]++] = block[y][x]; | |
| } | |
| } | |
| color_cell_compressor_params ccell_params[2]; | |
| color_cell_compressor_results ccell_results[2]; | |
| uint8_t ccell_result_selectors[2][16]; | |
| uint8_t ccell_result_selectors_temp[2][16]; | |
| uint64_t total_part_err = 0; | |
| for (uint32_t part = 0; part < 2; part++) | |
| { | |
| memset(&ccell_params[part], 0, sizeof(ccell_params[part])); | |
| ccell_params[part].m_num_pixels = num_part_pixels[part]; | |
| ccell_params[part].m_pPixels = (color_quad_u8*)&part_pixels[part][0]; | |
| ccell_params[part].m_num_selector_weights = 4; | |
| ccell_params[part].m_pSelector_weights = g_bc7_weights2; | |
| ccell_params[part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params[part].m_astc_endpoint_range = endpoint_range; | |
| ccell_params[part].m_weights[0] = 1; | |
| ccell_params[part].m_weights[1] = 1; | |
| ccell_params[part].m_weights[2] = 1; | |
| ccell_params[part].m_weights[3] = 1; | |
| memset(&ccell_results[part], 0, sizeof(ccell_results[part])); | |
| ccell_results[part].m_pSelectors = &ccell_result_selectors[part][0]; | |
| ccell_results[part].m_pSelectors_temp = &ccell_result_selectors_temp[part][0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params[part], &ccell_results[part], &comp_params); | |
| total_part_err += part_err; | |
| } // part | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = 2; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 2; | |
| astc_results.m_partition_seed = g_astc_bc7_common_partitions2[common_pattern].m_astc; | |
| astc_results.m_cem = 8; | |
| uint32_t p0 = 0; | |
| uint32_t p1 = 1; | |
| if (g_astc_bc7_common_partitions2[common_pattern].m_invert) | |
| std::swap(p0, p1); | |
| astc_results.m_endpoints[0] = ccell_results[p0].m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results[p0].m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results[p0].m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[3] = ccell_results[p0].m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[4] = ccell_results[p0].m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[5] = ccell_results[p0].m_astc_high_endpoint.m_c[2]; | |
| bool invert[2] = { false, false }; | |
| int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); | |
| std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); | |
| std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); | |
| invert[0] = true; | |
| } | |
| astc_results.m_endpoints[6] = ccell_results[p1].m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[7] = ccell_results[p1].m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[8] = ccell_results[p1].m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[9] = ccell_results[p1].m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[10] = ccell_results[p1].m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[11] = ccell_results[p1].m_astc_high_endpoint.m_c[2]; | |
| s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4 + 6]].m_unquant; | |
| s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5 + 6]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0 + 6], astc_results.m_endpoints[1 + 6]); | |
| std::swap(astc_results.m_endpoints[2 + 6], astc_results.m_endpoints[3 + 6]); | |
| std::swap(astc_results.m_endpoints[4 + 6], astc_results.m_endpoints[5 + 6]); | |
| invert[1] = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t bc7_part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; | |
| uint32_t astc_part = bc7_part; | |
| if (g_astc_bc7_common_partitions2[common_pattern].m_invert) | |
| astc_part = 1 - astc_part; | |
| if (invert[astc_part]) | |
| astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 4; | |
| pResults[total_results].m_common_pattern = common_pattern; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = total_part_err; | |
| total_results++; | |
| } | |
| } // common_pattern | |
| } | |
| // MODE 5 | |
| // DualPlane: 0, WeightRange: 5 (8), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 20 (256) BC7 MODE 6 (or MODE 1 1-subset) | |
| static void astc_mode5(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| const uint32_t weight_range = 5; | |
| const uint32_t endpoint_range = 20; | |
| color_cell_compressor_params ccell_params; | |
| memset(&ccell_params, 0, sizeof(ccell_params)); | |
| ccell_params.m_num_pixels = 16; | |
| ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; | |
| ccell_params.m_num_selector_weights = 8; | |
| ccell_params.m_pSelector_weights = g_bc7_weights3; | |
| ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights3x; | |
| ccell_params.m_astc_endpoint_range = endpoint_range; | |
| ccell_params.m_weights[0] = 1; | |
| ccell_params.m_weights[1] = 1; | |
| ccell_params.m_weights[2] = 1; | |
| ccell_params.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results; | |
| uint8_t ccell_result_selectors[16]; | |
| uint8_t ccell_result_selectors_temp[16]; | |
| memset(&ccell_results, 0, sizeof(ccell_results)); | |
| ccell_results.m_pSelectors = &ccell_result_selectors[0]; | |
| ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); | |
| // ASTC | |
| astc_block_desc blk; | |
| memset(&blk, 0, sizeof(blk)); | |
| blk.m_dual_plane = false; | |
| blk.m_weight_range = weight_range; | |
| blk.m_ccs = 0; | |
| blk.m_subsets = 1; | |
| blk.m_partition_seed = 0; | |
| blk.m_cem = 8; | |
| blk.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; | |
| blk.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; | |
| blk.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; | |
| blk.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; | |
| blk.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; | |
| bool invert = false; | |
| int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); | |
| std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); | |
| std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); | |
| invert = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| blk.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; | |
| if (invert) | |
| blk.m_weights[x + y * 4] = 7 - blk.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 5; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = blk; | |
| pResults[total_results].m_astc_err = part_err; | |
| total_results++; | |
| } | |
| } | |
| // MODE 6 | |
| // DualPlane: 1, WeightRange: 2 (4), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 18 (160) BC7 MODE5 | |
| static void astc_mode6(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| for (uint32_t rot_comp = 0; rot_comp < 3; rot_comp++) | |
| { | |
| const uint32_t weight_range = 2; | |
| const uint32_t endpoint_range = 18; | |
| color_quad_u8 block_rgb[16]; | |
| color_quad_u8 block_a[16]; | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| block_rgb[i] = ((color_quad_u8*)&block[0][0])[i]; | |
| block_a[i] = block_rgb[i]; | |
| uint8_t c = block_a[i].m_c[rot_comp]; | |
| block_a[i].m_c[0] = c; | |
| block_a[i].m_c[1] = c; | |
| block_a[i].m_c[2] = c; | |
| block_a[i].m_c[3] = 255; | |
| block_rgb[i].m_c[rot_comp] = 255; | |
| } | |
| uint8_t ccell_result_selectors_temp[16]; | |
| color_cell_compressor_params ccell_params_rgb; | |
| memset(&ccell_params_rgb, 0, sizeof(ccell_params_rgb)); | |
| ccell_params_rgb.m_num_pixels = 16; | |
| ccell_params_rgb.m_pPixels = block_rgb; | |
| ccell_params_rgb.m_num_selector_weights = 4; | |
| ccell_params_rgb.m_pSelector_weights = g_bc7_weights2; | |
| ccell_params_rgb.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params_rgb.m_astc_endpoint_range = endpoint_range; | |
| ccell_params_rgb.m_weights[0] = 1; | |
| ccell_params_rgb.m_weights[1] = 1; | |
| ccell_params_rgb.m_weights[2] = 1; | |
| ccell_params_rgb.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results_rgb; | |
| uint8_t ccell_result_selectors_rgb[16]; | |
| memset(&ccell_results_rgb, 0, sizeof(ccell_results_rgb)); | |
| ccell_results_rgb.m_pSelectors = &ccell_result_selectors_rgb[0]; | |
| ccell_results_rgb.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err_rgb = color_cell_compression(255, &ccell_params_rgb, &ccell_results_rgb, &comp_params); | |
| color_cell_compressor_params ccell_params_a; | |
| memset(&ccell_params_a, 0, sizeof(ccell_params_a)); | |
| ccell_params_a.m_num_pixels = 16; | |
| ccell_params_a.m_pPixels = block_a; | |
| ccell_params_a.m_num_selector_weights = 4; | |
| ccell_params_a.m_pSelector_weights = g_bc7_weights2; | |
| ccell_params_a.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params_a.m_astc_endpoint_range = endpoint_range; | |
| ccell_params_a.m_weights[0] = 1; | |
| ccell_params_a.m_weights[1] = 1; | |
| ccell_params_a.m_weights[2] = 1; | |
| ccell_params_a.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results_a; | |
| uint8_t ccell_result_selectors_a[16]; | |
| memset(&ccell_results_a, 0, sizeof(ccell_results_a)); | |
| ccell_results_a.m_pSelectors = &ccell_result_selectors_a[0]; | |
| ccell_results_a.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err_a = color_cell_compression(255, &ccell_params_a, &ccell_results_a, &comp_params) / 3; | |
| uint64_t total_err = part_err_rgb + part_err_a; | |
| // ASTC | |
| astc_block_desc blk; | |
| memset(&blk, 0, sizeof(blk)); | |
| blk.m_dual_plane = true; | |
| blk.m_weight_range = weight_range; | |
| blk.m_ccs = rot_comp; | |
| blk.m_subsets = 1; | |
| blk.m_partition_seed = 0; | |
| blk.m_cem = 8; | |
| blk.m_endpoints[0] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[1] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[0]; | |
| blk.m_endpoints[2] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[1]; | |
| blk.m_endpoints[3] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[1]; | |
| blk.m_endpoints[4] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[2]; | |
| blk.m_endpoints[5] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[2]; | |
| bool invert = false; | |
| int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); | |
| std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); | |
| std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); | |
| invert = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| uint32_t rgb_index = ccell_result_selectors_rgb[x + y * 4]; | |
| uint32_t a_index = ccell_result_selectors_a[x + y * 4]; | |
| if (invert) | |
| { | |
| rgb_index = 3 - rgb_index; | |
| a_index = 3 - a_index; | |
| } | |
| blk.m_weights[(x + y * 4) * 2 + 0] = (uint8_t)rgb_index; | |
| blk.m_weights[(x + y * 4) * 2 + 1] = (uint8_t)a_index; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 6; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = blk; | |
| pResults[total_results].m_astc_err = total_err; | |
| total_results++; | |
| } | |
| } // rot_comp | |
| } | |
| // MODE 7 - 2 subset ASTC, 3 subset BC7 | |
| // DualPlane: 0, WeightRange: 2 (4), Subsets: 2, CEM: 8 (RGB Direct ), EndpointRange: 12 (40) MODE2 | |
| static void astc_mode7(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) | |
| { | |
| uint32_t first_common_pattern = 0; | |
| uint32_t last_common_pattern = TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS; | |
| if (estimate_partition) | |
| { | |
| uint64_t best_err = UINT64_MAX; | |
| uint32_t best_common_pattern = 0; | |
| const uint32_t weights[4] = { 1, 1, 1, 1 }; | |
| for (uint32_t common_pattern = 0; common_pattern < TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS; common_pattern++) | |
| { | |
| const uint8_t* pPartition = &g_bc7_3_astc2_patterns2[common_pattern][0]; | |
| #ifdef _DEBUG | |
| const uint32_t astc_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_astc2; | |
| const uint32_t bc7_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_bc73; | |
| const uint32_t common_pattern_k = g_bc7_3_astc2_common_partitions[common_pattern].k; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t astc_part = bc7_convert_partition_index_3_to_2(g_bc7_partition3[16 * bc7_pattern + x + y * 4], common_pattern_k); | |
| assert((int)astc_part == astc_compute_texel_partition(astc_pattern, x, y, 0, 2, true)); | |
| assert(astc_part == pPartition[x + y * 4]); | |
| } | |
| } | |
| #endif | |
| color_quad_u8 subset_colors[2][16]; | |
| uint32_t subset_total_colors[2] = { 0, 0 }; | |
| for (uint32_t index = 0; index < 16; index++) | |
| subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; | |
| uint64_t total_subset_err = 0; | |
| for (uint32_t subset = 0; (subset < 2) && (total_subset_err < best_err); subset++) | |
| total_subset_err += color_cell_compression_est_astc(4, 3, g_bc7_weights2, subset_total_colors[subset], &subset_colors[subset][0], best_err, weights); | |
| if (total_subset_err < best_err) | |
| { | |
| best_err = total_subset_err; | |
| best_common_pattern = common_pattern; | |
| } | |
| } | |
| first_common_pattern = best_common_pattern; | |
| last_common_pattern = best_common_pattern + 1; | |
| } | |
| //const uint32_t weight_range = 2; | |
| const uint32_t endpoint_range = 12; | |
| for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) | |
| { | |
| const uint32_t astc_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_astc2; | |
| const uint32_t bc7_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_bc73; | |
| const uint32_t common_pattern_k = g_bc7_3_astc2_common_partitions[common_pattern].k; | |
| color_rgba part_pixels[2][16]; | |
| uint32_t part_pixel_index[4][4]; | |
| uint32_t num_part_pixels[2] = { 0, 0 }; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t astc_part = bc7_convert_partition_index_3_to_2(g_bc7_partition3[16 * bc7_pattern + x + y * 4], common_pattern_k); | |
| #ifdef _DEBUG | |
| assert((int)astc_part == astc_compute_texel_partition(astc_pattern, x, y, 0, 2, true)); | |
| #endif | |
| part_pixel_index[y][x] = num_part_pixels[astc_part]; | |
| part_pixels[astc_part][num_part_pixels[astc_part]++] = block[y][x]; | |
| } | |
| } | |
| color_cell_compressor_params ccell_params[2]; | |
| color_cell_compressor_results ccell_results[2]; | |
| uint8_t ccell_result_selectors[2][16]; | |
| uint8_t ccell_result_selectors_temp[2][16]; | |
| uint64_t total_part_err = 0; | |
| for (uint32_t part = 0; part < 2; part++) | |
| { | |
| memset(&ccell_params[part], 0, sizeof(ccell_params[part])); | |
| ccell_params[part].m_num_pixels = num_part_pixels[part]; | |
| ccell_params[part].m_pPixels = (color_quad_u8*)&part_pixels[part][0]; | |
| ccell_params[part].m_num_selector_weights = 4; | |
| ccell_params[part].m_pSelector_weights = g_bc7_weights2; | |
| ccell_params[part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params[part].m_astc_endpoint_range = endpoint_range; | |
| ccell_params[part].m_weights[0] = 1; | |
| ccell_params[part].m_weights[1] = 1; | |
| ccell_params[part].m_weights[2] = 1; | |
| ccell_params[part].m_weights[3] = 1; | |
| memset(&ccell_results[part], 0, sizeof(ccell_results[part])); | |
| ccell_results[part].m_pSelectors = &ccell_result_selectors[part][0]; | |
| ccell_results[part].m_pSelectors_temp = &ccell_result_selectors_temp[part][0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params[part], &ccell_results[part], &comp_params); | |
| total_part_err += part_err; | |
| } // part | |
| // ASTC | |
| astc_block_desc blk; | |
| memset(&blk, 0, sizeof(blk)); | |
| blk.m_dual_plane = false; | |
| blk.m_weight_range = 2; | |
| blk.m_ccs = 0; | |
| blk.m_subsets = 2; | |
| blk.m_partition_seed = astc_pattern; | |
| blk.m_cem = 8; | |
| const uint32_t p0 = 0; | |
| const uint32_t p1 = 1; | |
| blk.m_endpoints[0] = ccell_results[p0].m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[1] = ccell_results[p0].m_astc_high_endpoint.m_c[0]; | |
| blk.m_endpoints[2] = ccell_results[p0].m_astc_low_endpoint.m_c[1]; | |
| blk.m_endpoints[3] = ccell_results[p0].m_astc_high_endpoint.m_c[1]; | |
| blk.m_endpoints[4] = ccell_results[p0].m_astc_low_endpoint.m_c[2]; | |
| blk.m_endpoints[5] = ccell_results[p0].m_astc_high_endpoint.m_c[2]; | |
| bool invert[2] = { false, false }; | |
| int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); | |
| std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); | |
| std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); | |
| invert[0] = true; | |
| } | |
| blk.m_endpoints[6] = ccell_results[p1].m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[7] = ccell_results[p1].m_astc_high_endpoint.m_c[0]; | |
| blk.m_endpoints[8] = ccell_results[p1].m_astc_low_endpoint.m_c[1]; | |
| blk.m_endpoints[9] = ccell_results[p1].m_astc_high_endpoint.m_c[1]; | |
| blk.m_endpoints[10] = ccell_results[p1].m_astc_low_endpoint.m_c[2]; | |
| blk.m_endpoints[11] = ccell_results[p1].m_astc_high_endpoint.m_c[2]; | |
| s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4 + 6]].m_unquant; | |
| s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5 + 6]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(blk.m_endpoints[0 + 6], blk.m_endpoints[1 + 6]); | |
| std::swap(blk.m_endpoints[2 + 6], blk.m_endpoints[3 + 6]); | |
| std::swap(blk.m_endpoints[4 + 6], blk.m_endpoints[5 + 6]); | |
| invert[1] = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t astc_part = bc7_convert_partition_index_3_to_2(g_bc7_partition3[16 * bc7_pattern + x + y * 4], common_pattern_k); | |
| blk.m_weights[x + y * 4] = ccell_result_selectors[astc_part][part_pixel_index[y][x]]; | |
| if (invert[astc_part]) | |
| blk.m_weights[x + y * 4] = 3 - blk.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 7; | |
| pResults[total_results].m_common_pattern = common_pattern; | |
| pResults[total_results].m_astc = blk; | |
| pResults[total_results].m_astc_err = total_part_err; | |
| total_results++; | |
| } | |
| } // common_pattern | |
| } | |
| static void estimate_partition2_list(uint32_t num_weights, uint32_t num_comps, const uint32_t* pWeights, const color_rgba block[4][4], uint32_t* pParts, uint32_t max_parts, const uint32_t weights[4]) | |
| { | |
| assert(pWeights[0] == 0 && pWeights[num_weights - 1] == 64); | |
| const uint32_t MAX_PARTS = 8; | |
| assert(max_parts <= MAX_PARTS); | |
| uint64_t part_error[MAX_PARTS]; | |
| memset(part_error, 0xFF, sizeof(part_error)); | |
| memset(pParts, 0, sizeof(pParts[0]) * max_parts); | |
| for (uint32_t common_pattern = 0; common_pattern < TOTAL_ASTC_BC7_COMMON_PARTITIONS2; common_pattern++) | |
| { | |
| const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; | |
| const uint8_t* pPartition = &g_bc7_partition2[bc7_pattern * 16]; | |
| color_quad_u8 subset_colors[2][16]; | |
| uint32_t subset_total_colors[2] = { 0, 0 }; | |
| for (uint32_t index = 0; index < 16; index++) | |
| subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; | |
| uint64_t total_subset_err = 0; | |
| for (uint32_t subset = 0; subset < 2; subset++) | |
| total_subset_err += color_cell_compression_est_astc(num_weights, num_comps, pWeights, subset_total_colors[subset], &subset_colors[subset][0], UINT64_MAX, weights); | |
| for (int i = 0; i < (int)max_parts; i++) | |
| { | |
| if (total_subset_err < part_error[i]) | |
| { | |
| for (int j = max_parts - 1; j > i; --j) | |
| { | |
| pParts[j] = pParts[j - 1]; | |
| part_error[j] = part_error[j - 1]; | |
| } | |
| pParts[i] = common_pattern; | |
| part_error[i] = total_subset_err; | |
| break; | |
| } | |
| } | |
| } | |
| #ifdef _DEBUG | |
| for (uint32_t i = 0; i < max_parts - 1; i++) | |
| { | |
| assert(part_error[i] <= part_error[i + 1]); | |
| } | |
| #endif | |
| } | |
| // 9. DualPlane: 0, WeightRange: 2 (4), Subsets: 2, CEM: 12 (RGBA Direct), EndpointRange: 8 (16) - BC7 MODE 7 | |
| // 16. DualPlane: 0, WeightRange : 2 (4), Subsets : 2, CEM: 4 (LA Direct), EndpointRange : 20 (256) - BC7 MODE 7 | |
| static void astc_mode9_or_16(uint32_t mode, const color_rgba source_block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, uint32_t estimate_partition_list_size) | |
| { | |
| assert(mode == 9 || mode == 16); | |
| const color_rgba* pBlock = &source_block[0][0]; | |
| color_rgba temp_block[16]; | |
| if (mode == 16) | |
| { | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| if (mode == 16) | |
| { | |
| assert(pBlock[i].r == pBlock[i].g); | |
| assert(pBlock[i].r == pBlock[i].b); | |
| } | |
| const uint32_t l = pBlock[i].r; | |
| const uint32_t a = pBlock[i].a; | |
| // Use (l,0,0,a) not (l,l,l,a) so both components are treated equally. | |
| temp_block[i].set_noclamp_rgba(l, 0, 0, a); | |
| } | |
| pBlock = temp_block; | |
| } | |
| const uint32_t weights[4] = { 1, 1, 1, 1 }; | |
| //const uint32_t weight_range = 2; | |
| const uint32_t endpoint_range = (mode == 16) ? 20 : 8; | |
| uint32_t first_common_pattern = 0; | |
| uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS2; | |
| bool use_part_list = false; | |
| const uint32_t MAX_PARTS = 8; | |
| uint32_t parts[MAX_PARTS]; | |
| if (estimate_partition_list_size == 1) | |
| { | |
| first_common_pattern = estimate_partition2(4, 4, g_bc7_weights2, (const color_rgba(*)[4])pBlock, weights); | |
| last_common_pattern = first_common_pattern + 1; | |
| } | |
| else if (estimate_partition_list_size > 0) | |
| { | |
| assert(estimate_partition_list_size <= MAX_PARTS); | |
| estimate_partition_list_size = basisu::minimum(estimate_partition_list_size, MAX_PARTS); | |
| estimate_partition2_list(4, 4, g_bc7_weights2, (const color_rgba(*)[4])pBlock, parts, estimate_partition_list_size, weights); | |
| first_common_pattern = 0; | |
| last_common_pattern = estimate_partition_list_size; | |
| use_part_list = true; | |
| #ifdef _DEBUG | |
| assert(parts[0] == estimate_partition2(4, 4, g_bc7_weights2, (const color_rgba(*)[4])pBlock, weights)); | |
| #endif | |
| } | |
| for (uint32_t common_pattern_iter = first_common_pattern; common_pattern_iter < last_common_pattern; common_pattern_iter++) | |
| { | |
| const uint32_t common_pattern = use_part_list ? parts[common_pattern_iter] : common_pattern_iter; | |
| const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; | |
| color_rgba part_pixels[2][16]; | |
| uint32_t part_pixel_index[4][4]; | |
| uint32_t num_part_pixels[2] = { 0, 0 }; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; | |
| part_pixel_index[y][x] = num_part_pixels[part]; | |
| part_pixels[part][num_part_pixels[part]++] = pBlock[y * 4 + x]; | |
| } | |
| } | |
| color_cell_compressor_params ccell_params[2]; | |
| color_cell_compressor_results ccell_results[2]; | |
| uint8_t ccell_result_selectors[2][16]; | |
| uint8_t ccell_result_selectors_temp[2][16]; | |
| uint64_t total_err = 0; | |
| for (uint32_t subset = 0; subset < 2; subset++) | |
| { | |
| memset(&ccell_params[subset], 0, sizeof(ccell_params[subset])); | |
| ccell_params[subset].m_num_pixels = num_part_pixels[subset]; | |
| ccell_params[subset].m_pPixels = (color_quad_u8*)&part_pixels[subset][0]; | |
| ccell_params[subset].m_num_selector_weights = 4; | |
| ccell_params[subset].m_pSelector_weights = g_bc7_weights2; | |
| ccell_params[subset].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params[subset].m_astc_endpoint_range = endpoint_range; | |
| ccell_params[subset].m_weights[0] = weights[0]; | |
| ccell_params[subset].m_weights[1] = weights[1]; | |
| ccell_params[subset].m_weights[2] = weights[2]; | |
| ccell_params[subset].m_weights[3] = weights[3]; | |
| ccell_params[subset].m_has_alpha = true; | |
| memset(&ccell_results[subset], 0, sizeof(ccell_results[subset])); | |
| ccell_results[subset].m_pSelectors = &ccell_result_selectors[subset][0]; | |
| ccell_results[subset].m_pSelectors_temp = &ccell_result_selectors_temp[subset][0]; | |
| uint64_t subset_err = color_cell_compression(255, &ccell_params[subset], &ccell_results[subset], &comp_params); | |
| if (mode == 16) | |
| { | |
| color_rgba colors[4]; | |
| for (uint32_t c = 0; c < 4; c++) | |
| { | |
| colors[0].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results[subset].m_astc_low_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; | |
| colors[3].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results[subset].m_astc_high_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; | |
| } | |
| for (uint32_t i = 1; i < 4 - 1; i++) | |
| for (uint32_t c = 0; c < 4; c++) | |
| colors[i].m_comps[c] = (uint8_t)astc_interpolate(colors[0].m_comps[c], colors[3].m_comps[c], g_bc7_weights2[i], false); | |
| for (uint32_t p = 0; p < ccell_params[subset].m_num_pixels; p++) | |
| { | |
| color_rgba orig_pix(part_pixels[subset][p]); | |
| orig_pix.g = orig_pix.r; | |
| orig_pix.b = orig_pix.r; | |
| total_err += color_distance_la(orig_pix, colors[ccell_result_selectors[subset][p]]); | |
| } | |
| } | |
| else | |
| { | |
| total_err += subset_err; | |
| } | |
| } // subset | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = 2; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 2; | |
| astc_results.m_partition_seed = g_astc_bc7_common_partitions2[common_pattern].m_astc; | |
| astc_results.m_cem = (mode == 16) ? 4 : 12; | |
| uint32_t part[2] = { 0, 1 }; | |
| if (g_astc_bc7_common_partitions2[common_pattern].m_invert) | |
| std::swap(part[0], part[1]); | |
| bool invert[2] = { false, false }; | |
| for (uint32_t p = 0; p < 2; p++) | |
| { | |
| if (mode == 16) | |
| { | |
| astc_results.m_endpoints[p * 4 + 0] = ccell_results[part[p]].m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[p * 4 + 1] = ccell_results[part[p]].m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[p * 4 + 2] = ccell_results[part[p]].m_astc_low_endpoint.m_c[3]; | |
| astc_results.m_endpoints[p * 4 + 3] = ccell_results[part[p]].m_astc_high_endpoint.m_c[3]; | |
| } | |
| else | |
| { | |
| for (uint32_t c = 0; c < 4; c++) | |
| { | |
| astc_results.m_endpoints[p * 8 + c * 2] = ccell_results[part[p]].m_astc_low_endpoint.m_c[c]; | |
| astc_results.m_endpoints[p * 8 + c * 2 + 1] = ccell_results[part[p]].m_astc_high_endpoint.m_c[c]; | |
| } | |
| int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 0]].m_unquant + | |
| g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 2]].m_unquant + | |
| g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 1]].m_unquant + | |
| g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 3]].m_unquant + | |
| g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[p * 8 + 0], astc_results.m_endpoints[p * 8 + 1]); | |
| std::swap(astc_results.m_endpoints[p * 8 + 2], astc_results.m_endpoints[p * 8 + 3]); | |
| std::swap(astc_results.m_endpoints[p * 8 + 4], astc_results.m_endpoints[p * 8 + 5]); | |
| std::swap(astc_results.m_endpoints[p * 8 + 6], astc_results.m_endpoints[p * 8 + 7]); | |
| invert[p] = true; | |
| } | |
| } | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const uint32_t bc7_part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; | |
| uint32_t astc_part = bc7_part; | |
| if (g_astc_bc7_common_partitions2[common_pattern].m_invert) | |
| astc_part = 1 - astc_part; | |
| if (invert[astc_part]) | |
| astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = mode; | |
| pResults[total_results].m_common_pattern = common_pattern; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = total_err; | |
| total_results++; | |
| } | |
| } // common_pattern | |
| } | |
| // MODE 10 | |
| // DualPlane: 0, WeightRange: 8 (16), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 13 (48) MODE6 | |
| static void astc_mode10(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| const uint32_t weight_range = 8; | |
| const uint32_t endpoint_range = 13; | |
| color_cell_compressor_params ccell_params; | |
| memset(&ccell_params, 0, sizeof(ccell_params)); | |
| ccell_params.m_num_pixels = 16; | |
| ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; | |
| ccell_params.m_num_selector_weights = 16; | |
| ccell_params.m_pSelector_weights = g_astc_weights4; | |
| ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_astc_weights4x; | |
| ccell_params.m_astc_endpoint_range = endpoint_range; | |
| ccell_params.m_weights[0] = 1; | |
| ccell_params.m_weights[1] = 1; | |
| ccell_params.m_weights[2] = 1; | |
| ccell_params.m_weights[3] = 1; | |
| ccell_params.m_has_alpha = true; | |
| color_cell_compressor_results ccell_results; | |
| uint8_t ccell_result_selectors[16]; | |
| uint8_t ccell_result_selectors_temp[16]; | |
| memset(&ccell_results, 0, sizeof(ccell_results)); | |
| ccell_results.m_pSelectors = &ccell_result_selectors[0]; | |
| ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = weight_range; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 1; | |
| astc_results.m_partition_seed = 0; | |
| astc_results.m_cem = 12; | |
| astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; | |
| astc_results.m_endpoints[6] = ccell_results.m_astc_low_endpoint.m_c[3]; | |
| astc_results.m_endpoints[7] = ccell_results.m_astc_high_endpoint.m_c[3]; | |
| bool invert = false; | |
| int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); | |
| std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); | |
| std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); | |
| std::swap(astc_results.m_endpoints[6], astc_results.m_endpoints[7]); | |
| invert = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; | |
| if (invert) | |
| astc_results.m_weights[x + y * 4] = 15 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 10; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = part_err; | |
| total_results++; | |
| } | |
| } | |
| // 11. DualPlane: 1, WeightRange: 2 (4), Subsets: 1, CEM: 12 (RGBA Direct), EndpointRange: 13 (48) MODE5 | |
| // 17. DualPlane: 1, WeightRange : 2 (4), Subsets : 1, CEM : 4 (LA Direct), EndpointRange : 20 (256) BC7 MODE5 | |
| static void astc_mode11_or_17(uint32_t mode, const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| assert((mode == 11) || (mode == 17)); | |
| const uint32_t weight_range = 2; | |
| const uint32_t endpoint_range = (mode == 17) ? 20 : 13; | |
| bc7enc_compress_block_params local_comp_params(comp_params); | |
| local_comp_params.m_perceptual = false; | |
| local_comp_params.m_weights[0] = 1; | |
| local_comp_params.m_weights[1] = 1; | |
| local_comp_params.m_weights[2] = 1; | |
| local_comp_params.m_weights[3] = 1; | |
| const uint32_t last_rot_comp = (mode == 17) ? 1 : 4; | |
| for (uint32_t rot_comp = 0; rot_comp < last_rot_comp; rot_comp++) | |
| { | |
| color_quad_u8 block_rgb[16]; | |
| color_quad_u8 block_a[16]; | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| block_rgb[i] = ((color_quad_u8*)&block[0][0])[i]; | |
| block_a[i] = block_rgb[i]; | |
| if (mode == 17) | |
| { | |
| assert(block_rgb[i].m_c[0] == block_rgb[i].m_c[1]); | |
| assert(block_rgb[i].m_c[0] == block_rgb[i].m_c[2]); | |
| block_a[i].m_c[0] = block_rgb[i].m_c[3]; | |
| block_a[i].m_c[1] = block_rgb[i].m_c[3]; | |
| block_a[i].m_c[2] = block_rgb[i].m_c[3]; | |
| block_a[i].m_c[3] = 255; | |
| block_rgb[i].m_c[1] = block_rgb[i].m_c[0]; | |
| block_rgb[i].m_c[2] = block_rgb[i].m_c[0]; | |
| block_rgb[i].m_c[3] = 255; | |
| } | |
| else | |
| { | |
| uint8_t c = block_a[i].m_c[rot_comp]; | |
| block_a[i].m_c[0] = c; | |
| block_a[i].m_c[1] = c; | |
| block_a[i].m_c[2] = c; | |
| block_a[i].m_c[3] = 255; | |
| block_rgb[i].m_c[rot_comp] = block_rgb[i].m_c[3]; | |
| block_rgb[i].m_c[3] = 255; | |
| } | |
| } | |
| uint8_t ccell_result_selectors_temp[16]; | |
| color_cell_compressor_params ccell_params_rgb; | |
| memset(&ccell_params_rgb, 0, sizeof(ccell_params_rgb)); | |
| ccell_params_rgb.m_num_pixels = 16; | |
| ccell_params_rgb.m_pPixels = block_rgb; | |
| ccell_params_rgb.m_num_selector_weights = 4; | |
| ccell_params_rgb.m_pSelector_weights = g_bc7_weights2; | |
| ccell_params_rgb.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params_rgb.m_astc_endpoint_range = endpoint_range; | |
| ccell_params_rgb.m_weights[0] = 1; | |
| ccell_params_rgb.m_weights[1] = 1; | |
| ccell_params_rgb.m_weights[2] = 1; | |
| ccell_params_rgb.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results_rgb; | |
| uint8_t ccell_result_selectors_rgb[16]; | |
| memset(&ccell_results_rgb, 0, sizeof(ccell_results_rgb)); | |
| ccell_results_rgb.m_pSelectors = &ccell_result_selectors_rgb[0]; | |
| ccell_results_rgb.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err_rgb = color_cell_compression(255, &ccell_params_rgb, &ccell_results_rgb, &local_comp_params); | |
| color_cell_compressor_params ccell_params_a; | |
| memset(&ccell_params_a, 0, sizeof(ccell_params_a)); | |
| ccell_params_a.m_num_pixels = 16; | |
| ccell_params_a.m_pPixels = block_a; | |
| ccell_params_a.m_num_selector_weights = 4; | |
| ccell_params_a.m_pSelector_weights = g_bc7_weights2; | |
| ccell_params_a.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params_a.m_astc_endpoint_range = endpoint_range; | |
| ccell_params_a.m_weights[0] = 1; | |
| ccell_params_a.m_weights[1] = 1; | |
| ccell_params_a.m_weights[2] = 1; | |
| ccell_params_a.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results_a; | |
| uint8_t ccell_result_selectors_a[16]; | |
| memset(&ccell_results_a, 0, sizeof(ccell_results_a)); | |
| ccell_results_a.m_pSelectors = &ccell_result_selectors_a[0]; | |
| ccell_results_a.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err_a = color_cell_compression(255, &ccell_params_a, &ccell_results_a, &local_comp_params) / 3; | |
| uint64_t total_err = (mode == 17) ? ((part_err_rgb / 3) + part_err_a) : (part_err_rgb + part_err_a); | |
| // ASTC | |
| astc_block_desc blk; | |
| memset(&blk, 0, sizeof(blk)); | |
| blk.m_dual_plane = true; | |
| blk.m_weight_range = weight_range; | |
| blk.m_ccs = (mode == 17) ? 3 : rot_comp; | |
| blk.m_subsets = 1; | |
| blk.m_partition_seed = 0; | |
| blk.m_cem = (mode == 17) ? 4 : 12; | |
| bool invert = false; | |
| if (mode == 17) | |
| { | |
| assert(ccell_results_rgb.m_astc_low_endpoint.m_c[0] == ccell_results_rgb.m_astc_low_endpoint.m_c[1]); | |
| assert(ccell_results_rgb.m_astc_low_endpoint.m_c[0] == ccell_results_rgb.m_astc_low_endpoint.m_c[2]); | |
| assert(ccell_results_rgb.m_astc_high_endpoint.m_c[0] == ccell_results_rgb.m_astc_high_endpoint.m_c[1]); | |
| assert(ccell_results_rgb.m_astc_high_endpoint.m_c[0] == ccell_results_rgb.m_astc_high_endpoint.m_c[2]); | |
| blk.m_endpoints[0] = ccell_results_rgb.m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[1] = ccell_results_rgb.m_astc_high_endpoint.m_c[0]; | |
| blk.m_endpoints[2] = ccell_results_a.m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[3] = ccell_results_a.m_astc_high_endpoint.m_c[0]; | |
| } | |
| else | |
| { | |
| blk.m_endpoints[0] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[1] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[0]; | |
| blk.m_endpoints[2] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[1]; | |
| blk.m_endpoints[3] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[1]; | |
| blk.m_endpoints[4] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[2]; | |
| blk.m_endpoints[5] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[2]; | |
| if (rot_comp == 3) | |
| { | |
| blk.m_endpoints[6] = ccell_results_a.m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[7] = ccell_results_a.m_astc_high_endpoint.m_c[0]; | |
| } | |
| else | |
| { | |
| blk.m_endpoints[6] = ccell_results_rgb.m_astc_low_endpoint.m_c[rot_comp]; | |
| blk.m_endpoints[7] = ccell_results_rgb.m_astc_high_endpoint.m_c[rot_comp]; | |
| } | |
| int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); | |
| std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); | |
| std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); | |
| std::swap(blk.m_endpoints[6], blk.m_endpoints[7]); | |
| invert = true; | |
| } | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| uint32_t rgb_index = ccell_result_selectors_rgb[x + y * 4]; | |
| uint32_t a_index = ccell_result_selectors_a[x + y * 4]; | |
| if (invert) | |
| { | |
| rgb_index = 3 - rgb_index; | |
| a_index = 3 - a_index; | |
| } | |
| blk.m_weights[(x + y * 4) * 2 + 0] = (uint8_t)rgb_index; | |
| blk.m_weights[(x + y * 4) * 2 + 1] = (uint8_t)a_index; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = mode; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = blk; | |
| pResults[total_results].m_astc_err = total_err; | |
| total_results++; | |
| } | |
| } // rot_comp | |
| } | |
| // MODE 12 | |
| // DualPlane: 0, WeightRange: 5 (8), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 19 (192) MODE6 | |
| static void astc_mode12(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| const uint32_t weight_range = 5; | |
| const uint32_t endpoint_range = 19; | |
| color_cell_compressor_params ccell_params; | |
| memset(&ccell_params, 0, sizeof(ccell_params)); | |
| ccell_params.m_num_pixels = 16; | |
| ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; | |
| ccell_params.m_num_selector_weights = 8; | |
| ccell_params.m_pSelector_weights = g_bc7_weights3; | |
| ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights3x; | |
| ccell_params.m_astc_endpoint_range = endpoint_range; | |
| ccell_params.m_weights[0] = 1; | |
| ccell_params.m_weights[1] = 1; | |
| ccell_params.m_weights[2] = 1; | |
| ccell_params.m_weights[3] = 1; | |
| ccell_params.m_has_alpha = true; | |
| color_cell_compressor_results ccell_results; | |
| uint8_t ccell_result_selectors[16]; | |
| uint8_t ccell_result_selectors_temp[16]; | |
| memset(&ccell_results, 0, sizeof(ccell_results)); | |
| ccell_results.m_pSelectors = &ccell_result_selectors[0]; | |
| ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = weight_range; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 1; | |
| astc_results.m_partition_seed = 0; | |
| astc_results.m_cem = 12; | |
| astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; | |
| astc_results.m_endpoints[6] = ccell_results.m_astc_low_endpoint.m_c[3]; | |
| astc_results.m_endpoints[7] = ccell_results.m_astc_high_endpoint.m_c[3]; | |
| bool invert = false; | |
| int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); | |
| std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); | |
| std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); | |
| std::swap(astc_results.m_endpoints[6], astc_results.m_endpoints[7]); | |
| invert = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; | |
| if (invert) | |
| astc_results.m_weights[x + y * 4] = 7 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 12; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = part_err; | |
| total_results++; | |
| } | |
| } | |
| // 13. DualPlane: 1, WeightRange: 0 (2), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 20 (256) MODE5 | |
| static void astc_mode13(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| bc7enc_compress_block_params local_comp_params(comp_params); | |
| local_comp_params.m_perceptual = false; | |
| local_comp_params.m_weights[0] = 1; | |
| local_comp_params.m_weights[1] = 1; | |
| local_comp_params.m_weights[2] = 1; | |
| local_comp_params.m_weights[3] = 1; | |
| for (uint32_t rot_comp = 0; rot_comp < 4; rot_comp++) | |
| { | |
| const uint32_t weight_range = 0; | |
| const uint32_t endpoint_range = 20; | |
| color_quad_u8 block_rgb[16]; | |
| color_quad_u8 block_a[16]; | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| block_rgb[i] = ((color_quad_u8*)&block[0][0])[i]; | |
| block_a[i] = block_rgb[i]; | |
| uint8_t c = block_a[i].m_c[rot_comp]; | |
| block_a[i].m_c[0] = c; | |
| block_a[i].m_c[1] = c; | |
| block_a[i].m_c[2] = c; | |
| block_a[i].m_c[3] = 255; | |
| block_rgb[i].m_c[rot_comp] = block_rgb[i].m_c[3]; | |
| block_rgb[i].m_c[3] = 255; | |
| } | |
| uint8_t ccell_result_selectors_temp[16]; | |
| color_cell_compressor_params ccell_params_rgb; | |
| memset(&ccell_params_rgb, 0, sizeof(ccell_params_rgb)); | |
| ccell_params_rgb.m_num_pixels = 16; | |
| ccell_params_rgb.m_pPixels = block_rgb; | |
| ccell_params_rgb.m_num_selector_weights = 2; | |
| ccell_params_rgb.m_pSelector_weights = g_bc7_weights1; | |
| ccell_params_rgb.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights1x; | |
| ccell_params_rgb.m_astc_endpoint_range = endpoint_range; | |
| ccell_params_rgb.m_weights[0] = 1; | |
| ccell_params_rgb.m_weights[1] = 1; | |
| ccell_params_rgb.m_weights[2] = 1; | |
| ccell_params_rgb.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results_rgb; | |
| uint8_t ccell_result_selectors_rgb[16]; | |
| memset(&ccell_results_rgb, 0, sizeof(ccell_results_rgb)); | |
| ccell_results_rgb.m_pSelectors = &ccell_result_selectors_rgb[0]; | |
| ccell_results_rgb.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err_rgb = color_cell_compression(255, &ccell_params_rgb, &ccell_results_rgb, &local_comp_params); | |
| color_cell_compressor_params ccell_params_a; | |
| memset(&ccell_params_a, 0, sizeof(ccell_params_a)); | |
| ccell_params_a.m_num_pixels = 16; | |
| ccell_params_a.m_pPixels = block_a; | |
| ccell_params_a.m_num_selector_weights = 2; | |
| ccell_params_a.m_pSelector_weights = g_bc7_weights1; | |
| ccell_params_a.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights1x; | |
| ccell_params_a.m_astc_endpoint_range = endpoint_range; | |
| ccell_params_a.m_weights[0] = 1; | |
| ccell_params_a.m_weights[1] = 1; | |
| ccell_params_a.m_weights[2] = 1; | |
| ccell_params_a.m_weights[3] = 1; | |
| color_cell_compressor_results ccell_results_a; | |
| uint8_t ccell_result_selectors_a[16]; | |
| memset(&ccell_results_a, 0, sizeof(ccell_results_a)); | |
| ccell_results_a.m_pSelectors = &ccell_result_selectors_a[0]; | |
| ccell_results_a.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err_a = color_cell_compression(255, &ccell_params_a, &ccell_results_a, &local_comp_params) / 3; | |
| uint64_t total_err = part_err_rgb + part_err_a; | |
| // ASTC | |
| astc_block_desc blk; | |
| memset(&blk, 0, sizeof(blk)); | |
| blk.m_dual_plane = true; | |
| blk.m_weight_range = weight_range; | |
| blk.m_ccs = rot_comp; | |
| blk.m_subsets = 1; | |
| blk.m_partition_seed = 0; | |
| blk.m_cem = 12; | |
| blk.m_endpoints[0] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[1] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[0]; | |
| blk.m_endpoints[2] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[1]; | |
| blk.m_endpoints[3] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[1]; | |
| blk.m_endpoints[4] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[2]; | |
| blk.m_endpoints[5] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[2]; | |
| if (rot_comp == 3) | |
| { | |
| blk.m_endpoints[6] = ccell_results_a.m_astc_low_endpoint.m_c[0]; | |
| blk.m_endpoints[7] = ccell_results_a.m_astc_high_endpoint.m_c[0]; | |
| } | |
| else | |
| { | |
| blk.m_endpoints[6] = ccell_results_rgb.m_astc_low_endpoint.m_c[rot_comp]; | |
| blk.m_endpoints[7] = ccell_results_rgb.m_astc_high_endpoint.m_c[rot_comp]; | |
| } | |
| bool invert = false; | |
| int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); | |
| std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); | |
| std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); | |
| std::swap(blk.m_endpoints[6], blk.m_endpoints[7]); | |
| invert = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| uint32_t rgb_index = ccell_result_selectors_rgb[x + y * 4]; | |
| uint32_t a_index = ccell_result_selectors_a[x + y * 4]; | |
| if (invert) | |
| { | |
| rgb_index = 1 - rgb_index; | |
| a_index = 1 - a_index; | |
| } | |
| blk.m_weights[(x + y * 4) * 2 + 0] = (uint8_t)rgb_index; | |
| blk.m_weights[(x + y * 4) * 2 + 1] = (uint8_t)a_index; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 13; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = blk; | |
| pResults[total_results].m_astc_err = total_err; | |
| total_results++; | |
| } | |
| } // rot_comp | |
| } | |
| // MODE14 | |
| // DualPlane: 0, WeightRange: 2 (4), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 20 (256) MODE6 | |
| static void astc_mode14(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| const uint32_t weight_range = 2; | |
| const uint32_t endpoint_range = 20; | |
| color_cell_compressor_params ccell_params; | |
| memset(&ccell_params, 0, sizeof(ccell_params)); | |
| ccell_params.m_num_pixels = 16; | |
| ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; | |
| ccell_params.m_num_selector_weights = 4; | |
| ccell_params.m_pSelector_weights = g_bc7_weights2; | |
| ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; | |
| ccell_params.m_astc_endpoint_range = endpoint_range; | |
| ccell_params.m_weights[0] = 1; | |
| ccell_params.m_weights[1] = 1; | |
| ccell_params.m_weights[2] = 1; | |
| ccell_params.m_weights[3] = 1; | |
| ccell_params.m_has_alpha = true; | |
| color_cell_compressor_results ccell_results; | |
| uint8_t ccell_result_selectors[16]; | |
| uint8_t ccell_result_selectors_temp[16]; | |
| memset(&ccell_results, 0, sizeof(ccell_results)); | |
| ccell_results.m_pSelectors = &ccell_result_selectors[0]; | |
| ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = weight_range; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 1; | |
| astc_results.m_partition_seed = 0; | |
| astc_results.m_cem = 12; | |
| astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; | |
| astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; | |
| astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; | |
| astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; | |
| astc_results.m_endpoints[6] = ccell_results.m_astc_low_endpoint.m_c[3]; | |
| astc_results.m_endpoints[7] = ccell_results.m_astc_high_endpoint.m_c[3]; | |
| bool invert = false; | |
| int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; | |
| int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; | |
| if (s1 < s0) | |
| { | |
| std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); | |
| std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); | |
| std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); | |
| std::swap(astc_results.m_endpoints[6], astc_results.m_endpoints[7]); | |
| invert = true; | |
| } | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; | |
| if (invert) | |
| astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; | |
| } | |
| } | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 14; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = part_err; | |
| total_results++; | |
| } | |
| } | |
| // MODE 15 | |
| // DualPlane: 0, WeightRange : 8 (16), Subsets : 1, CEM : 4 (LA Direct), EndpointRange : 20 (256) BC7 MODE6 | |
| static void astc_mode15(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) | |
| { | |
| const uint32_t weight_range = 8; | |
| const uint32_t endpoint_range = 20; | |
| color_cell_compressor_params ccell_params; | |
| memset(&ccell_params, 0, sizeof(ccell_params)); | |
| color_rgba temp_block[16]; | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| const uint32_t l = ((const color_rgba*)block)[i].r; | |
| const uint32_t a = ((const color_rgba*)block)[i].a; | |
| // Use (l,0,0,a) not (l,l,l,a) so both components are treated equally. | |
| temp_block[i].set_noclamp_rgba(l, 0, 0, a); | |
| } | |
| ccell_params.m_num_pixels = 16; | |
| //ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; | |
| ccell_params.m_pPixels = (color_quad_u8*)temp_block; | |
| ccell_params.m_num_selector_weights = 16; | |
| ccell_params.m_pSelector_weights = g_astc_weights4; | |
| ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_astc_weights4x; | |
| ccell_params.m_astc_endpoint_range = endpoint_range; | |
| ccell_params.m_weights[0] = 1; | |
| ccell_params.m_weights[1] = 1; | |
| ccell_params.m_weights[2] = 1; | |
| ccell_params.m_weights[3] = 1; | |
| ccell_params.m_has_alpha = true; | |
| color_cell_compressor_results ccell_results; | |
| uint8_t ccell_result_selectors[16]; | |
| uint8_t ccell_result_selectors_temp[16]; | |
| memset(&ccell_results, 0, sizeof(ccell_results)); | |
| ccell_results.m_pSelectors = &ccell_result_selectors[0]; | |
| ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; | |
| color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); | |
| // ASTC | |
| astc_block_desc astc_results; | |
| memset(&astc_results, 0, sizeof(astc_results)); | |
| astc_results.m_dual_plane = false; | |
| astc_results.m_weight_range = weight_range; | |
| astc_results.m_ccs = 0; | |
| astc_results.m_subsets = 1; | |
| astc_results.m_partition_seed = 0; | |
| astc_results.m_cem = 4; | |
| astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; | |
| astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; | |
| astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[3]; | |
| astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[3]; | |
| for (uint32_t y = 0; y < 4; y++) | |
| for (uint32_t x = 0; x < 4; x++) | |
| astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; | |
| color_rgba colors[16]; | |
| for (uint32_t c = 0; c < 4; c++) | |
| { | |
| colors[0].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results.m_astc_low_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; | |
| colors[15].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results.m_astc_high_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; | |
| } | |
| for (uint32_t i = 1; i < 16 - 1; i++) | |
| for (uint32_t c = 0; c < 4; c++) | |
| colors[i].m_comps[c] = (uint8_t)astc_interpolate(colors[0].m_comps[c], colors[15].m_comps[c], g_astc_weights4[i], false); | |
| uint64_t total_err = 0; | |
| for (uint32_t p = 0; p < 16; p++) | |
| total_err += color_distance_la(((const color_rgba*)block)[p], colors[ccell_result_selectors[p]]); | |
| assert(total_results < MAX_ENCODE_RESULTS); | |
| if (total_results < MAX_ENCODE_RESULTS) | |
| { | |
| pResults[total_results].m_uastc_mode = 15; | |
| pResults[total_results].m_common_pattern = 0; | |
| pResults[total_results].m_astc = astc_results; | |
| pResults[total_results].m_astc_err = total_err; | |
| total_results++; | |
| } | |
| } | |
| static void compute_block_error(const color_rgba block[4][4], const color_rgba decoded_block[4][4], uint64_t &total_rgb_err, uint64_t &total_rgba_err, uint64_t &total_la_err) | |
| { | |
| uint64_t total_err_r = 0, total_err_g = 0, total_err_b = 0, total_err_a = 0; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const int dr = (int)block[y][x].m_comps[0] - (int)decoded_block[y][x].m_comps[0]; | |
| const int dg = (int)block[y][x].m_comps[1] - (int)decoded_block[y][x].m_comps[1]; | |
| const int db = (int)block[y][x].m_comps[2] - (int)decoded_block[y][x].m_comps[2]; | |
| const int da = (int)block[y][x].m_comps[3] - (int)decoded_block[y][x].m_comps[3]; | |
| total_err_r += dr * dr; | |
| total_err_g += dg * dg; | |
| total_err_b += db * db; | |
| total_err_a += da * da; | |
| } | |
| } | |
| total_la_err = total_err_r + total_err_a; | |
| total_rgb_err = total_err_r + total_err_g + total_err_b; | |
| total_rgba_err = total_rgb_err + total_err_a; | |
| } | |
| static void compute_bc1_hints(bool &bc1_hint0, bool &bc1_hint1, const uastc_encode_results &best_results, const color_rgba block[4][4], const color_rgba decoded_uastc_block[4][4]) | |
| { | |
| const uint32_t best_mode = best_results.m_uastc_mode; | |
| const bool perceptual = false; | |
| bc1_hint0 = false; | |
| bc1_hint1 = false; | |
| if (best_mode == UASTC_MODE_INDEX_SOLID_COLOR) | |
| return; | |
| if (!g_uastc_mode_has_bc1_hint0[best_mode] && !g_uastc_mode_has_bc1_hint1[best_mode]) | |
| return; | |
| color_rgba tblock_bc1[4][4]; | |
| dxt1_block tbc1_block[8]; | |
| basist::encode_bc1(tbc1_block, (const uint8_t*)&decoded_uastc_block[0][0], 0); | |
| unpack_block(texture_format::cBC1, tbc1_block, &tblock_bc1[0][0], false); | |
| color_rgba tblock_hint0_bc1[4][4]; | |
| color_rgba tblock_hint1_bc1[4][4]; | |
| etc_block etc1_blk; | |
| memset(&etc1_blk, 0, sizeof(etc1_blk)); | |
| eac_a8_block etc2_blk; | |
| memset(&etc2_blk, 0, sizeof(etc2_blk)); | |
| etc2_blk.m_multiplier = 1; | |
| // Pack to UASTC, then unpack, because the endpoints may be swapped. | |
| uastc_block temp_ublock; | |
| pack_uastc(temp_ublock, best_results, etc1_blk, 0, etc2_blk, false, false); | |
| unpacked_uastc_block temp_ublock_unpacked; | |
| unpack_uastc(temp_ublock, temp_ublock_unpacked, false); | |
| unpacked_uastc_block ublock; | |
| memset(&ublock, 0, sizeof(ublock)); | |
| ublock.m_mode = best_results.m_uastc_mode; | |
| ublock.m_common_pattern = best_results.m_common_pattern; | |
| ublock.m_astc = temp_ublock_unpacked.m_astc; | |
| dxt1_block b; | |
| // HINT1 | |
| if (!g_uastc_mode_has_bc1_hint1[best_mode]) | |
| { | |
| memset(tblock_hint1_bc1, 0, sizeof(tblock_hint1_bc1)); | |
| } | |
| else | |
| { | |
| transcode_uastc_to_bc1_hint1(ublock, (color32 (*)[4]) decoded_uastc_block, &b, false); | |
| unpack_block(texture_format::cBC1, &b, &tblock_hint1_bc1[0][0], false); | |
| } | |
| // HINT0 | |
| if (!g_uastc_mode_has_bc1_hint0[best_mode]) | |
| { | |
| memset(tblock_hint0_bc1, 0, sizeof(tblock_hint0_bc1)); | |
| } | |
| else | |
| { | |
| transcode_uastc_to_bc1_hint0(ublock, &b); | |
| unpack_block(texture_format::cBC1, &b, &tblock_hint0_bc1[0][0], false); | |
| } | |
| // Compute block errors | |
| uint64_t total_t_err = 0, total_hint0_err = 0, total_hint1_err = 0; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| total_t_err += color_distance(perceptual, block[y][x], tblock_bc1[y][x], false); | |
| total_hint0_err += color_distance(perceptual, block[y][x], tblock_hint0_bc1[y][x], false); | |
| total_hint1_err += color_distance(perceptual, block[y][x], tblock_hint1_bc1[y][x], false); | |
| } | |
| } | |
| const float t_err = sqrtf((float)total_t_err); | |
| const float t_err_hint0 = sqrtf((float)total_hint0_err); | |
| const float t_err_hint1 = sqrtf((float)total_hint1_err); | |
| const float err_thresh0 = 1.075f; | |
| const float err_thresh1 = 1.075f; | |
| if ((g_uastc_mode_has_bc1_hint0[best_mode]) && (t_err_hint0 <= t_err * err_thresh0)) | |
| bc1_hint0 = true; | |
| if ((g_uastc_mode_has_bc1_hint1[best_mode]) && (t_err_hint1 <= t_err * err_thresh1)) | |
| bc1_hint1 = true; | |
| } | |
| struct ycbcr | |
| { | |
| int32_t m_y; | |
| int32_t m_cb; | |
| int32_t m_cr; | |
| }; | |
| static inline void rgb_to_y_cb_cr(const color_rgba& c, ycbcr& dst) | |
| { | |
| const int y = c.r * 54 + c.g * 183 + c.b * 19; | |
| dst.m_y = y; | |
| dst.m_cb = (c.b << 8) - y; | |
| dst.m_cr = (c.r << 8) - y; | |
| } | |
| static inline uint64_t color_diff(const ycbcr& a, const ycbcr& b) | |
| { | |
| const int y_delta = a.m_y - b.m_y; | |
| const int cb_delta = a.m_cb - b.m_cb; | |
| const int cr_delta = a.m_cr - b.m_cr; | |
| return ((int64_t)y_delta * y_delta * 4) + ((int64_t)cr_delta * cr_delta) + ((int64_t)cb_delta * cb_delta); | |
| } | |
| static inline int gray_distance2(const color_rgba& c, int r, int g, int b) | |
| { | |
| int gray_dist = (((int)c[0] - r) + ((int)c[1] - g) + ((int)c[2] - b) + 1) / 3; | |
| int gray_point_r = clamp255(r + gray_dist); | |
| int gray_point_g = clamp255(g + gray_dist); | |
| int gray_point_b = clamp255(b + gray_dist); | |
| int dist_to_gray_point_r = c[0] - gray_point_r; | |
| int dist_to_gray_point_g = c[1] - gray_point_g; | |
| int dist_to_gray_point_b = c[2] - gray_point_b; | |
| return (dist_to_gray_point_r * dist_to_gray_point_r) + (dist_to_gray_point_g * dist_to_gray_point_g) + (dist_to_gray_point_b * dist_to_gray_point_b); | |
| } | |
| static bool pack_etc1_estimate_flipped(const color_rgba* pSrc_pixels) | |
| { | |
| int sums[3][2][2]; | |
| #define GET_XY(x, y, c) pSrc_pixels[(x) + ((y) * 4)][c] | |
| for (uint32_t c = 0; c < 3; c++) | |
| { | |
| sums[c][0][0] = GET_XY(0, 0, c) + GET_XY(0, 1, c) + GET_XY(1, 0, c) + GET_XY(1, 1, c); | |
| sums[c][1][0] = GET_XY(2, 0, c) + GET_XY(2, 1, c) + GET_XY(3, 0, c) + GET_XY(3, 1, c); | |
| sums[c][0][1] = GET_XY(0, 2, c) + GET_XY(0, 3, c) + GET_XY(1, 2, c) + GET_XY(1, 3, c); | |
| sums[c][1][1] = GET_XY(2, 2, c) + GET_XY(2, 3, c) + GET_XY(3, 2, c) + GET_XY(3, 3, c); | |
| } | |
| int upper_avg[3], lower_avg[3], left_avg[3], right_avg[3]; | |
| for (uint32_t c = 0; c < 3; c++) | |
| { | |
| upper_avg[c] = (sums[c][0][0] + sums[c][1][0] + 4) / 8; | |
| lower_avg[c] = (sums[c][0][1] + sums[c][1][1] + 4) / 8; | |
| left_avg[c] = (sums[c][0][0] + sums[c][0][1] + 4) / 8; | |
| right_avg[c] = (sums[c][1][0] + sums[c][1][1] + 4) / 8; | |
| } | |
| #undef GET_XY | |
| #define GET_XY(x, y, a) gray_distance2(pSrc_pixels[(x) + ((y) * 4)], a[0], a[1], a[2]) | |
| int upper_gray_dist = 0, lower_gray_dist = 0, left_gray_dist = 0, right_gray_dist = 0; | |
| for (uint32_t i = 0; i < 4; i++) | |
| { | |
| for (uint32_t j = 0; j < 2; j++) | |
| { | |
| upper_gray_dist += GET_XY(i, j, upper_avg); | |
| lower_gray_dist += GET_XY(i, 2 + j, lower_avg); | |
| left_gray_dist += GET_XY(j, i, left_avg); | |
| right_gray_dist += GET_XY(2 + j, i, right_avg); | |
| } | |
| } | |
| #undef GET_XY | |
| int upper_lower_sum = upper_gray_dist + lower_gray_dist; | |
| int left_right_sum = left_gray_dist + right_gray_dist; | |
| return upper_lower_sum < left_right_sum; | |
| } | |
| static void compute_etc1_hints(etc_block& best_etc1_blk, uint32_t& best_etc1_bias, const uastc_encode_results& best_results, const color_rgba block[4][4], const color_rgba decoded_uastc_block[4][4], int level, uint32_t flags) | |
| { | |
| best_etc1_bias = 0; | |
| if (best_results.m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) | |
| { | |
| pack_etc1_block_solid_color(best_etc1_blk, &best_results.m_solid_color.m_comps[0]); | |
| return; | |
| } | |
| const bool faster_etc1 = (flags & cPackUASTCETC1FasterHints) != 0; | |
| const bool fastest_etc1 = (flags & cPackUASTCETC1FastestHints) != 0; | |
| const bool has_bias = g_uastc_mode_has_etc1_bias[best_results.m_uastc_mode]; | |
| // 0 should be at the top, but we need 13 first because it represents bias (0,0,0). | |
| const uint8_t s_sorted_bias_modes[32] = { 13, 0, 22, 29, 27, 12, 26, 9, 30, 31, 8, 10, 25, 2, 23, 5, 15, 7, 3, 11, 6, 17, 28, 18, 1, 19, 20, 21, 24, 4, 14, 16 }; | |
| uint32_t last_bias = 1; | |
| bool use_faster_bias_mode_table = false; | |
| const bool flip_estimate = (level <= cPackUASTCLevelFaster) || (faster_etc1) || (fastest_etc1); | |
| if (has_bias) | |
| { | |
| switch (level) | |
| { | |
| case cPackUASTCLevelFastest: | |
| { | |
| last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 1 : 2); | |
| use_faster_bias_mode_table = true; | |
| break; | |
| } | |
| case cPackUASTCLevelFaster: | |
| { | |
| last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 3 : 5); | |
| use_faster_bias_mode_table = true; | |
| break; | |
| } | |
| case cPackUASTCLevelDefault: | |
| { | |
| last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 10 : 20); | |
| use_faster_bias_mode_table = true; | |
| break; | |
| } | |
| case cPackUASTCLevelSlower: | |
| { | |
| last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 16 : 32); | |
| use_faster_bias_mode_table = true; | |
| break; | |
| } | |
| default: | |
| { | |
| last_bias = 32; | |
| break; | |
| } | |
| } | |
| } | |
| memset(&best_etc1_blk, 0, sizeof(best_etc1_blk)); | |
| uint64_t best_err = UINT64_MAX; | |
| etc_block trial_block; | |
| memset(&trial_block, 0, sizeof(trial_block)); | |
| ycbcr block_ycbcr[4][4], decoded_uastc_block_ycbcr[4][4]; | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| rgb_to_y_cb_cr(block[y][x], block_ycbcr[y][x]); | |
| rgb_to_y_cb_cr(decoded_uastc_block[y][x], decoded_uastc_block_ycbcr[y][x]); | |
| } | |
| } | |
| uint32_t first_flip = 0, last_flip = 2; | |
| uint32_t first_individ = 0, last_individ = 2; | |
| if (flags & cPackUASTCETC1DisableFlipAndIndividual) | |
| { | |
| last_flip = 1; | |
| last_individ = 1; | |
| } | |
| else if (flip_estimate) | |
| { | |
| if (pack_etc1_estimate_flipped(&decoded_uastc_block[0][0])) | |
| first_flip = 1; | |
| last_flip = first_flip + 1; | |
| } | |
| for (uint32_t flip = first_flip; flip < last_flip; flip++) | |
| { | |
| trial_block.set_flip_bit(flip != 0); | |
| for (uint32_t individ = first_individ; individ < last_individ; individ++) | |
| { | |
| const uint32_t mul = individ ? 15 : 31; | |
| trial_block.set_diff_bit(individ == 0); | |
| color_rgba unbiased_block_colors[2]; | |
| int min_r[2] = { 255, 255 }, min_g[2] = { 255, 255 }, min_b[2] = { 255, 255 }, max_r[2] = { 0, 0 }, max_g[2] = { 0, 0 }, max_b[2] = { 0, 0 }; | |
| for (uint32_t subset = 0; subset < 2; subset++) | |
| { | |
| uint32_t avg_color[3]; | |
| memset(avg_color, 0, sizeof(avg_color)); | |
| for (uint32_t j = 0; j < 8; j++) | |
| { | |
| const etc_coord2 &c = g_etc1_pixel_coords[flip][subset][j]; | |
| const color_rgba& p = decoded_uastc_block[c.m_y][c.m_x]; | |
| avg_color[0] += p.r; | |
| avg_color[1] += p.g; | |
| avg_color[2] += p.b; | |
| min_r[subset] = basisu::minimum<uint32_t>(min_r[subset], p.r); | |
| min_g[subset] = basisu::minimum<uint32_t>(min_g[subset], p.g); | |
| min_b[subset] = basisu::minimum<uint32_t>(min_b[subset], p.b); | |
| max_r[subset] = basisu::maximum<uint32_t>(max_r[subset], p.r); | |
| max_g[subset] = basisu::maximum<uint32_t>(max_g[subset], p.g); | |
| max_b[subset] = basisu::maximum<uint32_t>(max_b[subset], p.b); | |
| } // j | |
| unbiased_block_colors[subset][0] = (uint8_t)((avg_color[0] * mul + 1020) / (8 * 255)); | |
| unbiased_block_colors[subset][1] = (uint8_t)((avg_color[1] * mul + 1020) / (8 * 255)); | |
| unbiased_block_colors[subset][2] = (uint8_t)((avg_color[2] * mul + 1020) / (8 * 255)); | |
| unbiased_block_colors[subset][3] = 0; | |
| } // subset | |
| for (uint32_t bias_iter = 0; bias_iter < last_bias; bias_iter++) | |
| { | |
| const uint32_t bias = use_faster_bias_mode_table ? s_sorted_bias_modes[bias_iter] : bias_iter; | |
| color_rgba block_colors[2]; | |
| for (uint32_t subset = 0; subset < 2; subset++) | |
| block_colors[subset] = has_bias ? apply_etc1_bias((color32&)unbiased_block_colors[subset], bias, mul, subset) : unbiased_block_colors[subset]; | |
| if (individ) | |
| trial_block.set_block_color4(block_colors[0], block_colors[1]); | |
| else | |
| trial_block.set_block_color5_clamp(block_colors[0], block_colors[1]); | |
| uint32_t range[2]; | |
| for (uint32_t subset = 0; subset < 2; subset++) | |
| { | |
| const color_rgba base_c(trial_block.get_block_color(subset, true)); | |
| const int pos_r = iabs(max_r[subset] - base_c.r); | |
| const int neg_r = iabs(base_c.r - min_r[subset]); | |
| const int pos_g = iabs(max_g[subset] - base_c.g); | |
| const int neg_g = iabs(base_c.g - min_g[subset]); | |
| const int pos_b = iabs(max_b[subset] - base_c.b); | |
| const int neg_b = iabs(base_c.b - min_b[subset]); | |
| range[subset] = maximum(maximum(pos_r, neg_r, pos_g, neg_g), pos_b, neg_b); | |
| } | |
| uint32_t best_inten_table[2] = { 0, 0 }; | |
| for (uint32_t subset = 0; subset < 2; subset++) | |
| { | |
| uint64_t best_subset_err = UINT64_MAX; | |
| const uint32_t inten_table_limit = (level == cPackUASTCLevelVerySlow) ? 8 : ((range[subset] > 51) ? 8 : (range[subset] >= 7 ? 4 : 2)); | |
| for (uint32_t inten_table = 0; inten_table < inten_table_limit; inten_table++) | |
| { | |
| trial_block.set_inten_table(subset, inten_table); | |
| color_rgba color_table[4]; | |
| trial_block.get_block_colors(color_table, subset); | |
| ycbcr color_table_ycbcr[4]; | |
| for (uint32_t i = 0; i < 4; i++) | |
| rgb_to_y_cb_cr(color_table[i], color_table_ycbcr[i]); | |
| uint64_t total_error = 0; | |
| if (flip) | |
| { | |
| for (uint32_t y = 0; y < 2; y++) | |
| { | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][0]; | |
| total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); | |
| } | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][1]; | |
| total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); | |
| } | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][2]; | |
| total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); | |
| } | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][3]; | |
| total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); | |
| } | |
| if (total_error >= best_subset_err) | |
| break; | |
| } | |
| } | |
| else | |
| { | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[y][subset * 2 + 0]; | |
| total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); | |
| } | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[y][subset * 2 + 1]; | |
| total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); | |
| } | |
| } | |
| if (total_error >= best_subset_err) | |
| break; | |
| } | |
| if (total_error < best_subset_err) | |
| { | |
| best_subset_err = total_error; | |
| best_inten_table[subset] = inten_table; | |
| } | |
| } // inten_table | |
| } // subset | |
| trial_block.set_inten_table(0, best_inten_table[0]); | |
| trial_block.set_inten_table(1, best_inten_table[1]); | |
| // Compute error against the ORIGINAL block. | |
| uint64_t err = 0; | |
| for (uint32_t subset = 0; subset < 2; subset++) | |
| { | |
| color_rgba color_table[4]; | |
| trial_block.get_block_colors(color_table, subset); | |
| ycbcr color_table_ycbcr[4]; | |
| for (uint32_t i = 0; i < 4; i++) | |
| rgb_to_y_cb_cr(color_table[i], color_table_ycbcr[i]); | |
| if (flip) | |
| { | |
| for (uint32_t y = 0; y < 2; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][x]; | |
| const uint64_t best_index_err = minimum(color_diff(color_table_ycbcr[0], c) << 2, (color_diff(color_table_ycbcr[1], c) << 2) + 1, (color_diff(color_table_ycbcr[2], c) << 2) + 2, (color_diff(color_table_ycbcr[3], c) << 2) + 3); | |
| const uint32_t best_index = (uint32_t)best_index_err & 3; | |
| err += color_diff(block_ycbcr[subset * 2 + y][x], color_table_ycbcr[best_index]); | |
| } | |
| if (err >= best_err) | |
| break; | |
| } | |
| } | |
| else | |
| { | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 2; x++) | |
| { | |
| const ycbcr& c = decoded_uastc_block_ycbcr[y][subset * 2 + x]; | |
| const uint64_t best_index_err = minimum(color_diff(color_table_ycbcr[0], c) << 2, (color_diff(color_table_ycbcr[1], c) << 2) + 1, (color_diff(color_table_ycbcr[2], c) << 2) + 2, (color_diff(color_table_ycbcr[3], c) << 2) + 3); | |
| const uint32_t best_index = (uint32_t)best_index_err & 3; | |
| err += color_diff(block_ycbcr[y][subset * 2 + x], color_table_ycbcr[best_index]); | |
| } | |
| if (err >= best_err) | |
| break; | |
| } | |
| } | |
| } // subset | |
| if (err < best_err) | |
| { | |
| best_err = err; | |
| best_etc1_blk = trial_block; | |
| best_etc1_bias = bias; | |
| } | |
| } // bias_iter | |
| } // individ | |
| } // flip | |
| } | |
| struct uastc_pack_eac_a8_results | |
| { | |
| uint32_t m_base; | |
| uint32_t m_table; | |
| uint32_t m_multiplier; | |
| }; | |
| static uint64_t uastc_pack_eac_a8(uastc_pack_eac_a8_results& results, const uint8_t* pPixels, uint32_t num_pixels, uint32_t base_search_rad, uint32_t mul_search_rad, uint32_t table_mask) | |
| { | |
| assert(num_pixels <= 16); | |
| uint32_t min_alpha = 255, max_alpha = 0; | |
| for (uint32_t i = 0; i < num_pixels; i++) | |
| { | |
| const uint32_t a = pPixels[i]; | |
| if (a < min_alpha) min_alpha = a; | |
| if (a > max_alpha) max_alpha = a; | |
| } | |
| if (min_alpha == max_alpha) | |
| { | |
| results.m_base = min_alpha; | |
| results.m_table = 13; | |
| results.m_multiplier = 1; | |
| return 0; | |
| } | |
| const uint32_t alpha_range = max_alpha - min_alpha; | |
| uint64_t best_err = UINT64_MAX; | |
| for (uint32_t table = 0; table < 16; table++) | |
| { | |
| if ((table_mask & (1U << table)) == 0) | |
| continue; | |
| const float range = (float)(g_etc2_eac_tables[table][ETC2_EAC_MAX_VALUE_SELECTOR] - g_etc2_eac_tables[table][ETC2_EAC_MIN_VALUE_SELECTOR]); | |
| const int center = (int)roundf(lerp((float)min_alpha, (float)max_alpha, (float)(0 - g_etc2_eac_tables[table][ETC2_EAC_MIN_VALUE_SELECTOR]) / range)); | |
| const int base_min = clamp255(center - base_search_rad); | |
| const int base_max = clamp255(center + base_search_rad); | |
| const int mul = (int)roundf(alpha_range / range); | |
| const int mul_low = clamp<int>(mul - mul_search_rad, 1, 15); | |
| const int mul_high = clamp<int>(mul + mul_search_rad, 1, 15); | |
| for (int base = base_min; base <= base_max; base++) | |
| { | |
| for (int multiplier = mul_low; multiplier <= mul_high; multiplier++) | |
| { | |
| uint64_t total_err = 0; | |
| for (uint32_t i = 0; i < num_pixels; i++) | |
| { | |
| const int a = pPixels[i]; | |
| uint32_t best_s_err = UINT32_MAX; | |
| //uint32_t best_s = 0; | |
| for (uint32_t s = 0; s < 8; s++) | |
| { | |
| const int v = clamp255((int)multiplier * g_etc2_eac_tables[table][s] + (int)base); | |
| uint32_t err = iabs(a - v); | |
| if (err < best_s_err) | |
| { | |
| best_s_err = err; | |
| //best_s = s; | |
| } | |
| } | |
| total_err += best_s_err * best_s_err; | |
| if (total_err >= best_err) | |
| break; | |
| } | |
| if (total_err < best_err) | |
| { | |
| best_err = total_err; | |
| results.m_base = base; | |
| results.m_multiplier = multiplier; | |
| results.m_table = table; | |
| if (!best_err) | |
| return best_err; | |
| } | |
| } // table | |
| } // multiplier | |
| } // base | |
| return best_err; | |
| } | |
| const int32_t DEFAULT_BC7_ERROR_WEIGHT = 50; | |
| const float UASTC_ERROR_THRESH = 1.3f; | |
| // TODO: This is a quick hack to favor certain modes when we know we'll be followed up with an RDO postprocess. | |
| static inline float get_uastc_mode_weight(uint32_t mode) | |
| { | |
| const float FAVORED_MODE_WEIGHT = .8f; | |
| switch (mode) | |
| { | |
| case 0: | |
| case 10: | |
| return FAVORED_MODE_WEIGHT; | |
| default: | |
| break; | |
| } | |
| return 1.0f; | |
| } | |
| void encode_uastc(const uint8_t* pRGBAPixels, uastc_block& output_block, uint32_t flags) | |
| { | |
| // printf("encode_uastc: \n"); | |
| // for (int i = 0; i < 16; i++) | |
| // printf("[%u %u %u %u] ", pRGBAPixels[i * 4 + 0], pRGBAPixels[i * 4 + 1], pRGBAPixels[i * 4 + 2], pRGBAPixels[i * 4 + 3]); | |
| // printf("\n"); | |
| const color_rgba(*block)[4] = reinterpret_cast<const color_rgba(*)[4]>(pRGBAPixels); | |
| bool solid_color = true, has_alpha = false, is_la = true; | |
| const color_rgba first_color(block[0][0]); | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| if (block[y][x].a < 255) | |
| has_alpha = true; | |
| if (block[y][x] != first_color) | |
| solid_color = false; | |
| if ((block[y][x].r != block[y][x].g) || (block[y][x].r != block[y][x].b)) | |
| is_la = false; | |
| } | |
| } | |
| if (solid_color) | |
| { | |
| // Solid color blocks are so common that we handle them specially and as quickly as we can. | |
| uastc_encode_results solid_results; | |
| solid_results.m_uastc_mode = UASTC_MODE_INDEX_SOLID_COLOR; | |
| solid_results.m_astc_err = 0; | |
| solid_results.m_common_pattern = 0; | |
| solid_results.m_solid_color = first_color; | |
| memset(&solid_results.m_astc, 0, sizeof(solid_results.m_astc)); | |
| etc_block etc1_blk; | |
| uint32_t etc1_bias = 0; | |
| pack_etc1_block_solid_color(etc1_blk, &first_color.m_comps[0]); | |
| eac_a8_block eac_a8_blk; | |
| eac_a8_blk.m_table = 0; | |
| eac_a8_blk.m_multiplier = 1; | |
| pack_uastc(output_block, solid_results, etc1_blk, etc1_bias, eac_a8_blk, false, false); | |
| // printf(" Solid\n"); | |
| return; | |
| } | |
| int level = flags & 7; | |
| const bool favor_uastc_error = (flags & cPackUASTCFavorUASTCError) != 0; | |
| const bool favor_bc7_error = !favor_uastc_error && ((flags & cPackUASTCFavorBC7Error) != 0); | |
| //const bool etc1_perceptual = true; | |
| // TODO: This uses 64KB of stack space! | |
| uastc_encode_results results[MAX_ENCODE_RESULTS]; | |
| level = clampi(level, cPackUASTCLevelFastest, cPackUASTCLevelVerySlow); | |
| // Set all options to slowest, then configure from there depending on the selected level. | |
| uint32_t mode_mask = UINT32_MAX; | |
| uint32_t uber_level = 6; | |
| bool estimate_partition = false; | |
| bool always_try_alpha_modes = true; | |
| uint32_t eac_a8_mul_search_rad = 3; | |
| uint32_t eac_a8_table_mask = UINT32_MAX; | |
| uint32_t least_squares_passes = 2; | |
| bool bc1_hints = true; | |
| bool only_use_la_on_transparent_blocks = false; | |
| switch (level) | |
| { | |
| case cPackUASTCLevelFastest: | |
| { | |
| mode_mask = (1 << 0) | (1 << 8) | | |
| (1 << 11) | (1 << 12) | | |
| (1 << 15); | |
| always_try_alpha_modes = false; | |
| eac_a8_mul_search_rad = 0; | |
| eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); | |
| uber_level = 0; | |
| least_squares_passes = 1; | |
| bc1_hints = false; | |
| estimate_partition = true; | |
| only_use_la_on_transparent_blocks = true; | |
| break; | |
| } | |
| case cPackUASTCLevelFaster: | |
| { | |
| mode_mask = (1 << 0) | (1 << 4) | (1 << 6) | (1 << 8) | | |
| (1 << 9) | (1 << 11) | (1 << 12) | | |
| (1 << 15) | (1 << 17); | |
| always_try_alpha_modes = false; | |
| eac_a8_mul_search_rad = 0; | |
| eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); | |
| uber_level = 0; | |
| least_squares_passes = 1; | |
| estimate_partition = true; | |
| break; | |
| } | |
| case cPackUASTCLevelDefault: | |
| { | |
| mode_mask = (1 << 0) | (1 << 1) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 8) | | |
| (1 << 9) | (1 << 10) | (1 << 11) | (1 << 12) | (1 << 13) | | |
| (1 << 15) | (1 << 16) | (1 << 17); | |
| always_try_alpha_modes = false; | |
| eac_a8_mul_search_rad = 1; | |
| eac_a8_table_mask = (1 << 0) | (1 << 2) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 10) | (1 << 11) | (1 << 13); | |
| uber_level = 1; | |
| least_squares_passes = 1; | |
| estimate_partition = true; | |
| break; | |
| } | |
| case cPackUASTCLevelSlower: | |
| { | |
| always_try_alpha_modes = false; | |
| eac_a8_mul_search_rad = 2; | |
| uber_level = 3; | |
| estimate_partition = true; | |
| break; | |
| } | |
| case cPackUASTCLevelVerySlow: | |
| { | |
| break; | |
| } | |
| } | |
| #if BASISU_SUPPORT_FORCE_MODE | |
| static int force_mode = -1; | |
| force_mode = (force_mode + 1) % TOTAL_UASTC_MODES; | |
| mode_mask = UINT32_MAX; | |
| always_try_alpha_modes = true; | |
| only_use_la_on_transparent_blocks = false; | |
| #endif | |
| // HACK HACK | |
| //mode_mask &= ~(1 << 18); | |
| //mode_mask = (1 << 18)| (1 << 10); | |
| uint32_t total_results = 0; | |
| if (only_use_la_on_transparent_blocks) | |
| { | |
| if ((is_la) && (!has_alpha)) | |
| is_la = false; | |
| } | |
| const bool try_alpha_modes = has_alpha || always_try_alpha_modes; | |
| bc7enc_compress_block_params comp_params; | |
| memset(&comp_params, 0, sizeof(comp_params)); | |
| comp_params.m_max_partitions_mode1 = 64; | |
| comp_params.m_least_squares_passes = least_squares_passes; | |
| comp_params.m_weights[0] = 1; | |
| comp_params.m_weights[1] = 1; | |
| comp_params.m_weights[2] = 1; | |
| comp_params.m_weights[3] = 1; | |
| comp_params.m_uber_level = uber_level; | |
| if (is_la) | |
| { | |
| if (mode_mask & (1U << 15)) | |
| astc_mode15(block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 16)) | |
| astc_mode9_or_16(16, block, results, total_results, comp_params, estimate_partition ? 4 : 0); | |
| if (mode_mask & (1U << 17)) | |
| astc_mode11_or_17(17, block, results, total_results, comp_params); | |
| } | |
| if (!has_alpha) | |
| { | |
| if (mode_mask & (1U << 0)) | |
| astc_mode0_or_18(0, block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 1)) | |
| astc_mode1(block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 2)) | |
| astc_mode2(block, results, total_results, comp_params, estimate_partition); | |
| if (mode_mask & (1U << 3)) | |
| astc_mode3(block, results, total_results, comp_params, estimate_partition); | |
| if (mode_mask & (1U << 4)) | |
| astc_mode4(block, results, total_results, comp_params, estimate_partition); | |
| if (mode_mask & (1U << 5)) | |
| astc_mode5(block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 6)) | |
| astc_mode6(block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 7)) | |
| astc_mode7(block, results, total_results, comp_params, estimate_partition); | |
| if (mode_mask & (1U << 18)) | |
| astc_mode0_or_18(18, block, results, total_results, comp_params); | |
| } | |
| if (try_alpha_modes) | |
| { | |
| if (mode_mask & (1U << 9)) | |
| astc_mode9_or_16(9, block, results, total_results, comp_params, estimate_partition ? 4 : 0); | |
| if (mode_mask & (1U << 10)) | |
| astc_mode10(block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 11)) | |
| astc_mode11_or_17(11, block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 12)) | |
| astc_mode12(block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 13)) | |
| astc_mode13(block, results, total_results, comp_params); | |
| if (mode_mask & (1U << 14)) | |
| astc_mode14(block, results, total_results, comp_params); | |
| } | |
| assert(total_results); | |
| // Fix up the errors so we consistently have LA, RGB, or RGBA error. | |
| for (uint32_t i = 0; i < total_results; i++) | |
| { | |
| uastc_encode_results& r = results[i]; | |
| if (!is_la) | |
| { | |
| if (g_uastc_mode_is_la[r.m_uastc_mode]) | |
| { | |
| color_rgba unpacked_block[16]; | |
| unpack_uastc(r.m_uastc_mode, r.m_common_pattern, r.m_solid_color.get_color32(), r.m_astc, (basist::color32 *)unpacked_block, false); | |
| uint64_t total_err = 0; | |
| for (uint32_t j = 0; j < 16; j++) | |
| total_err += color_distance(unpacked_block[j], ((const color_rgba*)block)[j], true); | |
| r.m_astc_err = total_err; | |
| } | |
| } | |
| else | |
| { | |
| if (!g_uastc_mode_is_la[r.m_uastc_mode]) | |
| { | |
| color_rgba unpacked_block[16]; | |
| unpack_uastc(r.m_uastc_mode, r.m_common_pattern, r.m_solid_color.get_color32(), r.m_astc, (basist::color32 *)unpacked_block, false); | |
| uint64_t total_err = 0; | |
| for (uint32_t j = 0; j < 16; j++) | |
| total_err += color_distance_la(unpacked_block[j], ((const color_rgba*)block)[j]); | |
| r.m_astc_err = total_err; | |
| } | |
| } | |
| } | |
| unpacked_uastc_block unpacked_ublock; | |
| memset(&unpacked_ublock, 0, sizeof(unpacked_ublock)); | |
| uint64_t total_overall_err[MAX_ENCODE_RESULTS]; | |
| float uastc_err_f[MAX_ENCODE_RESULTS]; | |
| double best_uastc_err_f = 1e+20f; | |
| int best_index = -1; | |
| if (total_results == 1) | |
| { | |
| best_index = 0; | |
| } | |
| else | |
| { | |
| const uint32_t bc7_err_weight = favor_bc7_error ? 100 : ((favor_uastc_error ? 0 : DEFAULT_BC7_ERROR_WEIGHT)); | |
| const uint32_t uastc_err_weight = favor_bc7_error ? 0 : 100; | |
| // Find best overall results, balancing UASTC and UASTC->BC7 error. | |
| // We purposely allow UASTC error to increase a little, if doing so lowers the BC7 error. | |
| for (uint32_t i = 0; i < total_results; i++) | |
| { | |
| #if BASISU_SUPPORT_FORCE_MODE | |
| if (results[i].m_uastc_mode == force_mode) | |
| { | |
| best_index = i; | |
| break; | |
| } | |
| #endif | |
| unpacked_ublock.m_mode = results[i].m_uastc_mode; | |
| unpacked_ublock.m_astc = results[i].m_astc; | |
| unpacked_ublock.m_common_pattern = results[i].m_common_pattern; | |
| unpacked_ublock.m_solid_color = results[i].m_solid_color.get_color32(); | |
| color_rgba decoded_uastc_block[4][4]; | |
| bool success = unpack_uastc(results[i].m_uastc_mode, results[i].m_common_pattern, results[i].m_solid_color.get_color32(), results[i].m_astc, (basist::color32 *)&decoded_uastc_block[0][0], false); | |
| (void)success; | |
| VALIDATE(success); | |
| uint64_t total_uastc_rgb_err, total_uastc_rgba_err, total_uastc_la_err; | |
| compute_block_error(block, decoded_uastc_block, total_uastc_rgb_err, total_uastc_rgba_err, total_uastc_la_err); | |
| // Validate the computed error, or we're go mad if it's inaccurate. | |
| if (results[i].m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) | |
| { | |
| VALIDATE(total_uastc_rgba_err == 0); | |
| } | |
| else if (is_la) | |
| { | |
| VALIDATE(total_uastc_la_err == results[i].m_astc_err); | |
| } | |
| else if (g_uastc_mode_has_alpha[results[i].m_uastc_mode]) | |
| { | |
| VALIDATE(total_uastc_rgba_err == results[i].m_astc_err); | |
| } | |
| else | |
| { | |
| VALIDATE(total_uastc_rgb_err == results[i].m_astc_err); | |
| } | |
| // Transcode to BC7 | |
| bc7_optimization_results bc7_results; | |
| transcode_uastc_to_bc7(unpacked_ublock, bc7_results); | |
| bc7_block bc7_data; | |
| encode_bc7_block(&bc7_data, &bc7_results); | |
| color_rgba decoded_bc7_block[4][4]; | |
| unpack_block(texture_format::cBC7, &bc7_data, &decoded_bc7_block[0][0], false); | |
| // Compute BC7 error | |
| uint64_t total_bc7_la_err, total_bc7_rgb_err, total_bc7_rgba_err; | |
| compute_block_error(block, decoded_bc7_block, total_bc7_rgb_err, total_bc7_rgba_err, total_bc7_la_err); | |
| if (results[i].m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) | |
| { | |
| VALIDATE(total_bc7_rgba_err == 0); | |
| best_index = i; | |
| break; | |
| } | |
| uint64_t total_uastc_err = 0, total_bc7_err = 0; | |
| if (is_la) | |
| { | |
| total_bc7_err = total_bc7_la_err; | |
| total_uastc_err = total_uastc_la_err; | |
| } | |
| else if (has_alpha) | |
| { | |
| total_bc7_err = total_bc7_rgba_err; | |
| total_uastc_err = total_uastc_rgba_err; | |
| } | |
| else | |
| { | |
| total_bc7_err = total_bc7_rgb_err; | |
| total_uastc_err = total_uastc_rgb_err; | |
| } | |
| total_overall_err[i] = ((total_bc7_err * bc7_err_weight) / 100) + ((total_uastc_err * uastc_err_weight) / 100); | |
| if (!total_overall_err[i]) | |
| { | |
| best_index = i; | |
| break; | |
| } | |
| uastc_err_f[i] = sqrtf((float)total_uastc_err); | |
| if (uastc_err_f[i] < best_uastc_err_f) | |
| { | |
| best_uastc_err_f = uastc_err_f[i]; | |
| } | |
| } // total_results | |
| if (best_index < 0) | |
| { | |
| uint64_t best_err = UINT64_MAX; | |
| if ((best_uastc_err_f == 0.0f) || (favor_bc7_error)) | |
| { | |
| for (uint32_t i = 0; i < total_results; i++) | |
| { | |
| // TODO: This is a quick hack to favor modes 0 or 10 for better RDO compression. | |
| const float err_weight = (flags & cPackUASTCFavorSimplerModes) ? get_uastc_mode_weight(results[i].m_uastc_mode) : 1.0f; | |
| const uint64_t w = (uint64_t)(total_overall_err[i] * err_weight); | |
| if (w < best_err) | |
| { | |
| best_err = w; | |
| best_index = i; | |
| if (!best_err) | |
| break; | |
| } | |
| } // i | |
| } | |
| else | |
| { | |
| // Scan the UASTC results, and consider all results within a window that has the best UASTC+BC7 error. | |
| for (uint32_t i = 0; i < total_results; i++) | |
| { | |
| double err_delta = uastc_err_f[i] / best_uastc_err_f; | |
| if (err_delta <= UASTC_ERROR_THRESH) | |
| { | |
| // TODO: This is a quick hack to favor modes 0 or 10 for better RDO compression. | |
| const float err_weight = (flags & cPackUASTCFavorSimplerModes) ? get_uastc_mode_weight(results[i].m_uastc_mode) : 1.0f; | |
| const uint64_t w = (uint64_t)(total_overall_err[i] * err_weight); | |
| if (w < best_err) | |
| { | |
| best_err = w; | |
| best_index = i; | |
| if (!best_err) | |
| break; | |
| } | |
| } | |
| } // i | |
| } | |
| } | |
| } | |
| const uastc_encode_results& best_results = results[best_index]; | |
| const uint32_t best_mode = best_results.m_uastc_mode; | |
| const astc_block_desc& best_astc_results = best_results.m_astc; | |
| color_rgba decoded_uastc_block[4][4]; | |
| bool success = unpack_uastc(best_mode, best_results.m_common_pattern, best_results.m_solid_color.get_color32(), best_astc_results, (basist::color32 *)&decoded_uastc_block[0][0], false); | |
| (void)success; | |
| VALIDATE(success); | |
| #if BASISU_VALIDATE_UASTC_ENC | |
| // Make sure that the UASTC block unpacks to the same exact pixels as the ASTC block does, using two different decoders. | |
| { | |
| // Round trip to packed UASTC and back, then decode to pixels. | |
| etc_block etc1_blk; | |
| memset(&etc1_blk, 0, sizeof(etc1_blk)); | |
| eac_a8_block etc_eac_a8_blk; | |
| memset(&etc_eac_a8_blk, 0, sizeof(etc_eac_a8_blk)); | |
| etc_eac_a8_blk.m_multiplier = 1; | |
| basist::uastc_block temp_block; | |
| pack_uastc(temp_block, best_results, etc1_blk, 0, etc_eac_a8_blk, false, false); | |
| basist::color32 temp_block_unpacked[4][4]; | |
| success = basist::unpack_uastc(temp_block, (basist::color32 *)temp_block_unpacked, false); | |
| VALIDATE(success); | |
| // Now round trip to packed ASTC and back, then decode to pixels. | |
| uint32_t astc_data[4]; | |
| if (best_results.m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) | |
| pack_astc_solid_block(astc_data, (color32 &)best_results.m_solid_color); | |
| else | |
| { | |
| success = pack_astc_block(astc_data, &best_astc_results, best_results.m_uastc_mode); | |
| VALIDATE(success); | |
| } | |
| color_rgba decoded_astc_block[4][4]; | |
| success = basisu_astc::astc::decompress_ldr((uint8_t*)decoded_astc_block, (uint8_t*)&astc_data, false, 4, 4); | |
| VALIDATE(success); | |
| for (uint32_t y = 0; y < 4; y++) | |
| { | |
| for (uint32_t x = 0; x < 4; x++) | |
| { | |
| VALIDATE(decoded_astc_block[y][x] == decoded_uastc_block[y][x]); | |
| VALIDATE(temp_block_unpacked[y][x].c[0] == decoded_uastc_block[y][x].r); | |
| VALIDATE(temp_block_unpacked[y][x].c[1] == decoded_uastc_block[y][x].g); | |
| VALIDATE(temp_block_unpacked[y][x].c[2] == decoded_uastc_block[y][x].b); | |
| VALIDATE(temp_block_unpacked[y][x].c[3] == decoded_uastc_block[y][x].a); | |
| } | |
| } | |
| } | |
| #endif | |
| // Compute BC1 hints | |
| bool bc1_hint0 = false, bc1_hint1 = false; | |
| if (bc1_hints) | |
| compute_bc1_hints(bc1_hint0, bc1_hint1, best_results, block, decoded_uastc_block); | |
| eac_a8_block eac_a8_blk; | |
| if ((g_uastc_mode_has_alpha[best_mode]) && (best_mode != UASTC_MODE_INDEX_SOLID_COLOR)) | |
| { | |
| // Compute ETC2 hints | |
| uint8_t decoded_uastc_block_alpha[16]; | |
| for (uint32_t i = 0; i < 16; i++) | |
| decoded_uastc_block_alpha[i] = decoded_uastc_block[i >> 2][i & 3].a; | |
| uastc_pack_eac_a8_results eac8_a8_results; | |
| memset(&eac8_a8_results, 0, sizeof(eac8_a8_results)); | |
| uastc_pack_eac_a8(eac8_a8_results, decoded_uastc_block_alpha, 16, 0, eac_a8_mul_search_rad, eac_a8_table_mask); | |
| // All we care about for hinting is the table and multiplier. | |
| eac_a8_blk.m_table = eac8_a8_results.m_table; | |
| eac_a8_blk.m_multiplier = eac8_a8_results.m_multiplier; | |
| } | |
| else | |
| { | |
| memset(&eac_a8_blk, 0, sizeof(eac_a8_blk)); | |
| } | |
| // Compute ETC1 hints | |
| etc_block etc1_blk; | |
| uint32_t etc1_bias = 0; | |
| compute_etc1_hints(etc1_blk, etc1_bias, best_results, block, decoded_uastc_block, level, flags); | |
| // Finally, pack the UASTC block with its hints and we're done. | |
| pack_uastc(output_block, best_results, etc1_blk, etc1_bias, eac_a8_blk, bc1_hint0, bc1_hint1); | |
| // printf(" Packed: "); | |
| // for (int i = 0; i < 16; i++) | |
| // printf("%X ", output_block.m_bytes[i]); | |
| // printf("\n"); | |
| } | |
| static bool uastc_recompute_hints(basist::uastc_block* pBlock, const color_rgba* pBlock_pixels, uint32_t flags, const unpacked_uastc_block *pUnpacked_blk) | |
| { | |
| unpacked_uastc_block unpacked_blk; | |
| if (pUnpacked_blk) | |
| unpacked_blk = *pUnpacked_blk; | |
| else | |
| { | |
| if (!unpack_uastc(*pBlock, unpacked_blk, false, true)) | |
| return false; | |
| } | |
| color_rgba decoded_uastc_block[4][4]; | |
| if (!unpack_uastc(unpacked_blk, (basist::color32 *)decoded_uastc_block, false)) | |
| return false; | |
| uastc_encode_results results; | |
| results.m_uastc_mode = unpacked_blk.m_mode; | |
| results.m_common_pattern = unpacked_blk.m_common_pattern; | |
| results.m_astc = unpacked_blk.m_astc; | |
| results.m_solid_color = unpacked_blk.m_solid_color; | |
| results.m_astc_err = 0; | |
| bool bc1_hints = true; | |
| uint32_t eac_a8_mul_search_rad = 3; | |
| uint32_t eac_a8_table_mask = UINT32_MAX; | |
| const uint32_t level = flags & cPackUASTCLevelMask; | |
| switch (level) | |
| { | |
| case cPackUASTCLevelFastest: | |
| { | |
| eac_a8_mul_search_rad = 0; | |
| eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); | |
| bc1_hints = false; | |
| break; | |
| } | |
| case cPackUASTCLevelFaster: | |
| { | |
| eac_a8_mul_search_rad = 0; | |
| eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); | |
| break; | |
| } | |
| case cPackUASTCLevelDefault: | |
| { | |
| eac_a8_mul_search_rad = 1; | |
| eac_a8_table_mask = (1 << 0) | (1 << 2) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 10) | (1 << 11) | (1 << 13); | |
| break; | |
| } | |
| case cPackUASTCLevelSlower: | |
| { | |
| eac_a8_mul_search_rad = 2; | |
| break; | |
| } | |
| case cPackUASTCLevelVerySlow: | |
| { | |
| break; | |
| } | |
| } | |
| bool bc1_hint0 = false, bc1_hint1 = false; | |
| if (bc1_hints) | |
| compute_bc1_hints(bc1_hint0, bc1_hint1, results, (color_rgba (*)[4])pBlock_pixels, decoded_uastc_block); | |
| const uint32_t best_mode = unpacked_blk.m_mode; | |
| eac_a8_block eac_a8_blk; | |
| if ((g_uastc_mode_has_alpha[best_mode]) && (best_mode != UASTC_MODE_INDEX_SOLID_COLOR)) | |
| { | |
| uint8_t decoded_uastc_block_alpha[16]; | |
| for (uint32_t i = 0; i < 16; i++) | |
| decoded_uastc_block_alpha[i] = decoded_uastc_block[i >> 2][i & 3].a; | |
| uastc_pack_eac_a8_results eac8_a8_results; | |
| memset(&eac8_a8_results, 0, sizeof(eac8_a8_results)); | |
| uastc_pack_eac_a8(eac8_a8_results, decoded_uastc_block_alpha, 16, 0, eac_a8_mul_search_rad, eac_a8_table_mask); | |
| eac_a8_blk.m_table = eac8_a8_results.m_table; | |
| eac_a8_blk.m_multiplier = eac8_a8_results.m_multiplier; | |
| } | |
| else | |
| { | |
| memset(&eac_a8_blk, 0, sizeof(eac_a8_blk)); | |
| } | |
| etc_block etc1_blk; | |
| uint32_t etc1_bias = 0; | |
| compute_etc1_hints(etc1_blk, etc1_bias, results, (color_rgba (*)[4])pBlock_pixels, decoded_uastc_block, level, flags); | |
| pack_uastc(*pBlock, results, etc1_blk, etc1_bias, eac_a8_blk, bc1_hint0, bc1_hint1); | |
| return true; | |
| } | |
| static const uint8_t g_uastc_mode_selector_bits[TOTAL_UASTC_MODES][2] = | |
| { | |
| { 65, 63 }, { 69, 31 }, { 73, 46 }, { 89, 29 }, | |
| { 89, 30 }, { 68, 47 }, { 66, 62 }, { 89, 30 }, | |
| { 0, 0 }, { 97, 30 }, { 65, 63 }, { 66, 62 }, | |
| { 81, 47 }, { 94, 30 }, { 92, 31 }, { 62, 63 }, | |
| { 98, 30 }, { 61, 62 }, { 49, 79 } | |
| }; | |
| static inline uint32_t set_block_bits(uint8_t* pBytes, uint64_t val, uint32_t num_bits, uint32_t cur_ofs) | |
| { | |
| assert(num_bits <= 64); | |
| assert((num_bits == 64) || (val < (1ULL << num_bits))); | |
| uint64_t mask = (num_bits == 64) ? UINT64_MAX : ((1ULL << num_bits) - 1); | |
| while (num_bits) | |
| { | |
| const uint32_t n = basisu::minimum<uint32_t>(8U - (cur_ofs & 7U), num_bits); | |
| pBytes[cur_ofs >> 3] &= ~static_cast<uint8_t>(mask << (cur_ofs & 7U)); | |
| pBytes[cur_ofs >> 3] |= static_cast<uint8_t>(val << (cur_ofs & 7U)); | |
| val >>= n; | |
| mask >>= n; | |
| num_bits -= n; | |
| cur_ofs += n; | |
| } | |
| return cur_ofs; | |
| } | |
| static const uint8_t g_tdefl_small_dist_extra[512] = | |
| { | |
| 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, | |
| 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, | |
| 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, | |
| 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, | |
| 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, | |
| 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, | |
| 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, | |
| 7, 7, 7, 7, 7, 7, 7, 7 | |
| }; | |
| static const uint8_t g_tdefl_large_dist_extra[128] = | |
| { | |
| 0, 0, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, | |
| 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, | |
| 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13 | |
| }; | |
| static inline uint32_t compute_match_cost_estimate(uint32_t dist) | |
| { | |
| uint32_t len_cost = 7; | |
| uint32_t dist_cost = 5; | |
| if (dist < 512) | |
| dist_cost += g_tdefl_small_dist_extra[dist & 511]; | |
| else | |
| { | |
| dist_cost += g_tdefl_large_dist_extra[basisu::minimum<uint32_t>(dist, 32767) >> 8]; | |
| while (dist >= 32768) | |
| { | |
| dist_cost++; | |
| dist >>= 1; | |
| } | |
| } | |
| return len_cost + dist_cost; | |
| } | |
| struct selector_bitsequence | |
| { | |
| uint64_t m_sel; | |
| uint32_t m_ofs; | |
| uint32_t m_pad; // avoid implicit padding for selector_bitsequence_hash | |
| selector_bitsequence() { } | |
| selector_bitsequence(uint32_t bit_ofs, uint64_t sel) : m_sel(sel), m_ofs(bit_ofs), m_pad(0) { } | |
| bool operator== (const selector_bitsequence& other) const | |
| { | |
| return (m_ofs == other.m_ofs) && (m_sel == other.m_sel); | |
| } | |
| bool operator< (const selector_bitsequence& other) const | |
| { | |
| if (m_ofs < other.m_ofs) | |
| return true; | |
| else if (m_ofs == other.m_ofs) | |
| return m_sel < other.m_sel; | |
| return false; | |
| } | |
| }; | |
| struct selector_bitsequence_hash | |
| { | |
| std::size_t operator()(selector_bitsequence const& s) const noexcept | |
| { | |
| return basist::hash_hsieh((const uint8_t*)&s, sizeof(s)); | |
| } | |
| }; | |
| static bool uastc_rdo_blocks(uint32_t first_index, uint32_t last_index, basist::uastc_block* pBlocks, const color_rgba* pBlock_pixels, const uastc_rdo_params& params, uint32_t flags, | |
| uint32_t &total_skipped, uint32_t &total_refined, uint32_t &total_modified, uint32_t &total_smooth) | |
| { | |
| debug_printf("uastc_rdo_blocks: Processing blocks %u to %u\n", first_index, last_index); | |
| const int total_blocks_to_check = basisu::maximum<uint32_t>(1U, params.m_lz_dict_size / sizeof(basist::uastc_block)); | |
| const bool perceptual = false; | |
| std::unordered_map<selector_bitsequence, uint32_t, selector_bitsequence_hash> selector_history; | |
| for (uint32_t block_index = first_index; block_index < last_index; block_index++) | |
| { | |
| const basist::uastc_block& blk = pBlocks[block_index]; | |
| const color_rgba* pPixels = &pBlock_pixels[16 * block_index]; | |
| unpacked_uastc_block unpacked_blk; | |
| if (!unpack_uastc(blk, unpacked_blk, false, true)) | |
| return false; | |
| const uint32_t block_mode = unpacked_blk.m_mode; | |
| if (block_mode == UASTC_MODE_INDEX_SOLID_COLOR) | |
| continue; | |
| tracked_stat r_stats, g_stats, b_stats, a_stats; | |
| for (uint32_t i = 0; i < 16; i++) | |
| { | |
| r_stats.update(pPixels[i].r); | |
| g_stats.update(pPixels[i].g); | |
| b_stats.update(pPixels[i].b); | |
| a_stats.update(pPixels[i].a); | |
| } | |
| const float max_std_dev = basisu::maximum<float>(basisu::maximum<float>(basisu::maximum(r_stats.get_std_dev(), g_stats.get_std_dev()), b_stats.get_std_dev()), a_stats.get_std_dev()); | |
| float yl = clamp<float>(max_std_dev / params.m_max_smooth_block_std_dev, 0.0f, 1.0f); | |
| yl = yl * yl; | |
| const float smooth_block_error_scale = lerp<float>(params.m_smooth_block_max_error_scale, 1.0f, yl); | |
| if (smooth_block_error_scale > 1.0f) | |
| total_smooth++; | |
| color_rgba decoded_uastc_block[4][4]; | |
| if (!unpack_uastc(unpacked_blk, (basist::color32*)decoded_uastc_block, false)) | |
| return false; | |
| uint64_t uastc_err = 0; | |
| for (uint32_t i = 0; i < 16; i++) | |
| uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_uastc_block)[i], true); | |
| // Transcode to BC7 | |
| bc7_optimization_results b7_results; | |
| if (!transcode_uastc_to_bc7(unpacked_blk, b7_results)) | |
| return false; | |
| basist::bc7_block b7_block; | |
| basist::encode_bc7_block(&b7_block, &b7_results); | |
| color_rgba decoded_b7_blk[4][4]; | |
| unpack_block(texture_format::cBC7, &b7_block, &decoded_b7_blk[0][0], false); | |
| uint64_t bc7_err = 0; | |
| for (uint32_t i = 0; i < 16; i++) | |
| bc7_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_b7_blk)[i], true); | |
| uint64_t cur_err = (uastc_err + bc7_err) / 2; | |
| // Divide by 16*4 to compute RMS error | |
| const float cur_ms_err = (float)cur_err * (1.0f / 64.0f); | |
| const float cur_rms_err = sqrt(cur_ms_err); | |
| const uint32_t first_sel_bit = g_uastc_mode_selector_bits[block_mode][0]; | |
| const uint32_t total_sel_bits = g_uastc_mode_selector_bits[block_mode][1]; | |
| assert(first_sel_bit + total_sel_bits <= 128); | |
| assert(total_sel_bits > 0); | |
| uint32_t cur_bit_offset = first_sel_bit; | |
| uint64_t cur_sel_bits = read_bits((const uint8_t*)&blk, cur_bit_offset, basisu::minimum(64U, total_sel_bits)); | |
| if (cur_rms_err >= params.m_skip_block_rms_thresh) | |
| { | |
| auto cur_search_res = selector_history.insert(std::make_pair(selector_bitsequence(first_sel_bit, cur_sel_bits), block_index)); | |
| // Block already has too much error, so don't mess with it. | |
| if (!cur_search_res.second) | |
| (*cur_search_res.first).second = block_index; | |
| total_skipped++; | |
| continue; | |
| } | |
| int cur_bits; | |
| auto cur_find_res = selector_history.find(selector_bitsequence(first_sel_bit, cur_sel_bits)); | |
| if (cur_find_res == selector_history.end()) | |
| { | |
| // Wasn't found - wildly estimate literal cost | |
| //cur_bits = (total_sel_bits * 5) / 4; | |
| cur_bits = (total_sel_bits * params.m_lz_literal_cost) / 100; | |
| } | |
| else | |
| { | |
| // Was found - wildly estimate match cost | |
| uint32_t match_block_index = cur_find_res->second; | |
| const int block_dist_in_bytes = (block_index - match_block_index) * 16; | |
| cur_bits = compute_match_cost_estimate(block_dist_in_bytes); | |
| } | |
| int first_block_to_check = basisu::maximum<int>(first_index, block_index - total_blocks_to_check); | |
| int last_block_to_check = block_index - 1; | |
| basist::uastc_block best_block(blk); | |
| uint32_t best_block_index = block_index; | |
| float best_t = cur_ms_err * smooth_block_error_scale + cur_bits * params.m_lambda; | |
| // Now scan through previous blocks, insert their selector bit patterns into the current block, and find | |
| // selector bit patterns which don't increase the overall block error too much. | |
| for (int prev_block_index = last_block_to_check; prev_block_index >= first_block_to_check; --prev_block_index) | |
| { | |
| const basist::uastc_block& prev_blk = pBlocks[prev_block_index]; | |
| uint32_t bit_offset = first_sel_bit; | |
| uint64_t sel_bits = read_bits((const uint8_t*)&prev_blk, bit_offset, basisu::minimum(64U, total_sel_bits)); | |
| int match_block_index = prev_block_index; | |
| auto res = selector_history.find(selector_bitsequence(first_sel_bit, sel_bits)); | |
| if (res != selector_history.end()) | |
| match_block_index = res->second; | |
| // Have we already checked this bit pattern? If so then skip this block. | |
| if (match_block_index > prev_block_index) | |
| continue; | |
| unpacked_uastc_block unpacked_prev_blk; | |
| if (!unpack_uastc(prev_blk, unpacked_prev_blk, false, true)) | |
| return false; | |
| basist::uastc_block trial_blk(blk); | |
| set_block_bits((uint8_t*)&trial_blk, sel_bits, basisu::minimum(64U, total_sel_bits), first_sel_bit); | |
| if (total_sel_bits > 64) | |
| { | |
| sel_bits = read_bits((const uint8_t*)&prev_blk, bit_offset, total_sel_bits - 64U); | |
| set_block_bits((uint8_t*)&trial_blk, sel_bits, total_sel_bits - 64U, first_sel_bit + basisu::minimum(64U, total_sel_bits)); | |
| } | |
| unpacked_uastc_block unpacked_trial_blk; | |
| if (!unpack_uastc(trial_blk, unpacked_trial_blk, false, true)) | |
| continue; | |
| color_rgba decoded_trial_uastc_block[4][4]; | |
| if (!unpack_uastc(unpacked_trial_blk, (basist::color32*)decoded_trial_uastc_block, false)) | |
| continue; | |
| uint64_t trial_uastc_err = 0; | |
| for (uint32_t i = 0; i < 16; i++) | |
| trial_uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_trial_uastc_block)[i], true); | |
| // Transcode trial to BC7, compute error | |
| bc7_optimization_results trial_b7_results; | |
| if (!transcode_uastc_to_bc7(unpacked_trial_blk, trial_b7_results)) | |
| return false; | |
| basist::bc7_block trial_b7_block; | |
| basist::encode_bc7_block(&trial_b7_block, &trial_b7_results); | |
| color_rgba decoded_trial_b7_blk[4][4]; | |
| unpack_block(texture_format::cBC7, &trial_b7_block, &decoded_trial_b7_blk[0][0], false); | |
| uint64_t trial_bc7_err = 0; | |
| for (uint32_t i = 0; i < 16; i++) | |
| trial_bc7_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_trial_b7_blk)[i], true); | |
| uint64_t trial_err = (trial_uastc_err + trial_bc7_err) / 2; | |
| const float trial_ms_err = (float)trial_err * (1.0f / 64.0f); | |
| const float trial_rms_err = sqrtf(trial_ms_err); | |
| if (trial_rms_err > cur_rms_err * params.m_max_allowed_rms_increase_ratio) | |
| continue; | |
| const int block_dist_in_bytes = (block_index - match_block_index) * 16; | |
| const int match_bits = compute_match_cost_estimate(block_dist_in_bytes); | |
| float t = trial_ms_err * smooth_block_error_scale + match_bits * params.m_lambda; | |
| if (t < best_t) | |
| { | |
| best_t = t; | |
| best_block_index = prev_block_index; | |
| best_block = trial_blk; | |
| } | |
| } // prev_block_index | |
| if (best_block_index != block_index) | |
| { | |
| total_modified++; | |
| unpacked_uastc_block unpacked_best_blk; | |
| if (!unpack_uastc(best_block, unpacked_best_blk, false, false)) | |
| return false; | |
| if ((params.m_endpoint_refinement) && (block_mode == 0)) | |
| { | |
| // Attempt to refine mode 0 block's endpoints, using the new selectors. This doesn't help much, but it does help. | |
| // TODO: We could do this with the other modes too. | |
| color_rgba decoded_best_uastc_block[4][4]; | |
| if (!unpack_uastc(unpacked_best_blk, (basist::color32*)decoded_best_uastc_block, false)) | |
| return false; | |
| // Compute the block's current error (with the modified selectors). | |
| uint64_t best_uastc_err = 0; | |
| for (uint32_t i = 0; i < 16; i++) | |
| best_uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_best_uastc_block)[i], true); | |
| bc7enc_compress_block_params comp_params; | |
| memset(&comp_params, 0, sizeof(comp_params)); | |
| comp_params.m_max_partitions_mode1 = 64; | |
| comp_params.m_least_squares_passes = 1; | |
| comp_params.m_weights[0] = 1; | |
| comp_params.m_weights[1] = 1; | |
| comp_params.m_weights[2] = 1; | |
| comp_params.m_weights[3] = 1; | |
| comp_params.m_uber_level = 0; | |
| uastc_encode_results results; | |
| uint32_t total_results = 0; | |
| astc_mode0_or_18(0, (color_rgba(*)[4])pPixels, &results, total_results, comp_params, unpacked_best_blk.m_astc.m_weights); | |
| assert(total_results == 1); | |
| // See if the overall error has actually gone done. | |
| color_rgba decoded_trial_uastc_block[4][4]; | |
| bool success = unpack_uastc(results.m_uastc_mode, results.m_common_pattern, results.m_solid_color.get_color32(), results.m_astc, (basist::color32*) & decoded_trial_uastc_block[0][0], false); | |
| assert(success); | |
| BASISU_NOTE_UNUSED(success); | |
| uint64_t trial_uastc_err = 0; | |
| for (uint32_t i = 0; i < 16; i++) | |
| trial_uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_trial_uastc_block)[i], true); | |
| if (trial_uastc_err < best_uastc_err) | |
| { | |
| // The error went down, so accept the new endpoints. | |
| // Ensure the selectors haven't changed, otherwise we'll invalidate the LZ matches. | |
| for (uint32_t i = 0; i < 16; i++) | |
| assert(unpacked_best_blk.m_astc.m_weights[i] == results.m_astc.m_weights[i]); | |
| unpacked_best_blk.m_astc = results.m_astc; | |
| total_refined++; | |
| } | |
| } // if ((params.m_endpoint_refinement) && (block_mode == 0)) | |
| // The selectors have changed, so go recompute the block hints. | |
| if (!uastc_recompute_hints(&best_block, pPixels, flags, &unpacked_best_blk)) | |
| return false; | |
| // Write the modified block | |
| pBlocks[block_index] = best_block; | |
| } // if (best_block_index != block_index) | |
| { | |
| uint32_t bit_offset = first_sel_bit; | |
| uint64_t sel_bits = read_bits((const uint8_t*)&best_block, bit_offset, basisu::minimum(64U, total_sel_bits)); | |
| auto res = selector_history.insert(std::make_pair(selector_bitsequence(first_sel_bit, sel_bits), block_index)); | |
| if (!res.second) | |
| (*res.first).second = block_index; | |
| } | |
| } // block_index | |
| return true; | |
| } | |
| // This function implements a basic form of rate distortion optimization (RDO) for UASTC. | |
| // It only changes selectors and then updates the hints. It uses very approximate LZ bitprice estimation. | |
| // There's A LOT that can be done better in here, but it's a start. | |
| // One nice advantage of the method used here is that it works for any input, no matter which or how many modes it uses. | |
| bool uastc_rdo(uint32_t num_blocks, basist::uastc_block* pBlocks, const color_rgba* pBlock_pixels, const uastc_rdo_params& params, uint32_t flags, job_pool* pJob_pool, uint32_t total_jobs) | |
| { | |
| assert(params.m_max_allowed_rms_increase_ratio > 1.0f); | |
| assert(params.m_lz_dict_size > 0); | |
| assert(params.m_lambda > 0.0f); | |
| uint32_t total_skipped = 0, total_modified = 0, total_refined = 0, total_smooth = 0; | |
| uint32_t blocks_per_job = total_jobs ? (num_blocks / total_jobs) : 0; | |
| std::mutex stat_mutex; | |
| bool status = false; | |
| if ((!pJob_pool) || (total_jobs <= 1) || (blocks_per_job <= 8)) | |
| { | |
| status = uastc_rdo_blocks(0, num_blocks, pBlocks, pBlock_pixels, params, flags, total_skipped, total_refined, total_modified, total_smooth); | |
| } | |
| else | |
| { | |
| bool all_succeeded = true; | |
| for (uint32_t block_index_iter = 0; block_index_iter < num_blocks; block_index_iter += blocks_per_job) | |
| { | |
| const uint32_t first_index = block_index_iter; | |
| const uint32_t last_index = minimum<uint32_t>(num_blocks, block_index_iter + blocks_per_job); | |
| pJob_pool->add_job([first_index, last_index, pBlocks, pBlock_pixels, ¶ms, flags, &total_skipped, &total_modified, &total_refined, &total_smooth, &all_succeeded, &stat_mutex] { | |
| uint32_t job_skipped = 0, job_modified = 0, job_refined = 0, job_smooth = 0; | |
| bool status = uastc_rdo_blocks(first_index, last_index, pBlocks, pBlock_pixels, params, flags, job_skipped, job_refined, job_modified, job_smooth); | |
| { | |
| std::lock_guard<std::mutex> lck(stat_mutex); | |
| all_succeeded = all_succeeded && status; | |
| total_skipped += job_skipped; | |
| total_modified += job_modified; | |
| total_refined += job_refined; | |
| total_smooth += job_smooth; | |
| } | |
| } | |
| ); | |
| } // block_index_iter | |
| pJob_pool->wait_for_all(); | |
| status = all_succeeded; | |
| } | |
| debug_printf("uastc_rdo: Total modified: %3.2f%%, total skipped: %3.2f%%, total refined: %3.2f%%, total smooth: %3.2f%%\n", total_modified * 100.0f / num_blocks, total_skipped * 100.0f / num_blocks, total_refined * 100.0f / num_blocks, total_smooth * 100.0f / num_blocks); | |
| return status; | |
| } | |
| } // namespace basisu | |