| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "src/core/SkRasterPipeline.h" |
| |
| #include "include/core/SkColorType.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/private/base/SkDebug.h" |
| #include "include/private/base/SkTemplates.h" |
| #include "modules/skcms/skcms.h" |
| #include "src/base/SkVx.h" |
| #include "src/core/SkImageInfoPriv.h" |
| #include "src/core/SkOpts.h" |
| #include "src/core/SkRasterPipelineOpContexts.h" |
| #include "src/core/SkRasterPipelineOpList.h" |
| |
| #include <algorithm> |
| #include <cstring> |
| #include <vector> |
| |
| using namespace skia_private; |
| using Op = SkRasterPipelineOp; |
| |
| bool gForceHighPrecisionRasterPipeline; |
| |
| SkRasterPipeline::SkRasterPipeline(SkArenaAlloc* alloc) : fAlloc(alloc) { |
| this->reset(); |
| } |
| |
| void SkRasterPipeline::reset() { |
| // We intentionally leave the alloc alone here; we don't own it. |
| fRewindCtx = nullptr; |
| fStages = nullptr; |
| fTailPointer = nullptr; |
| fNumStages = 0; |
| fMemoryCtxInfos.clear(); |
| } |
| |
| void SkRasterPipeline::append(SkRasterPipelineOp op, void* ctx) { |
| SkASSERT(op != Op::uniform_color); // Please use appendConstantColor(). |
| SkASSERT(op != Op::unbounded_uniform_color); // Please use appendConstantColor(). |
| SkASSERT(op != Op::set_rgb); // Please use appendSetRGB(). |
| SkASSERT(op != Op::unbounded_set_rgb); // Please use appendSetRGB(). |
| SkASSERT(op != Op::parametric); // Please use appendTransferFunction(). |
| SkASSERT(op != Op::gamma_); // Please use appendTransferFunction(). |
| SkASSERT(op != Op::PQish); // Please use appendTransferFunction(). |
| SkASSERT(op != Op::HLGish); // Please use appendTransferFunction(). |
| SkASSERT(op != Op::HLGinvish); // Please use appendTransferFunction(). |
| SkASSERT(op != Op::stack_checkpoint); // Please use appendStackRewind(). |
| SkASSERT(op != Op::stack_rewind); // Please use appendStackRewind(). |
| this->uncheckedAppend(op, ctx); |
| } |
| |
| uint8_t* SkRasterPipeline::tailPointer() { |
| if (!fTailPointer) { |
| // All ops in the pipeline that use the tail value share the same value. |
| fTailPointer = fAlloc->make<uint8_t>(0xFF); |
| } |
| return fTailPointer; |
| } |
| |
| void SkRasterPipeline::uncheckedAppend(SkRasterPipelineOp op, void* ctx) { |
| bool isLoad = false, isStore = false; |
| SkColorType ct = kUnknown_SkColorType; |
| |
| #define COLOR_TYPE_CASE(stage_ct, sk_ct) \ |
| case Op::load_##stage_ct: \ |
| case Op::load_##stage_ct##_dst: \ |
| ct = sk_ct; \ |
| isLoad = true; \ |
| break; \ |
| case Op::store_##stage_ct: \ |
| ct = sk_ct; \ |
| isStore = true; \ |
| break; |
| |
| switch (op) { |
| COLOR_TYPE_CASE(a8, kAlpha_8_SkColorType) |
| COLOR_TYPE_CASE(565, kRGB_565_SkColorType) |
| COLOR_TYPE_CASE(4444, kARGB_4444_SkColorType) |
| COLOR_TYPE_CASE(8888, kRGBA_8888_SkColorType) |
| COLOR_TYPE_CASE(rg88, kR8G8_unorm_SkColorType) |
| COLOR_TYPE_CASE(16161616, kR16G16B16A16_unorm_SkColorType) |
| COLOR_TYPE_CASE(a16, kA16_unorm_SkColorType) |
| COLOR_TYPE_CASE(rg1616, kR16G16_unorm_SkColorType) |
| COLOR_TYPE_CASE(f16, kRGBA_F16_SkColorType) |
| COLOR_TYPE_CASE(af16, kA16_float_SkColorType) |
| COLOR_TYPE_CASE(rgf16, kR16G16_float_SkColorType) |
| COLOR_TYPE_CASE(f32, kRGBA_F32_SkColorType) |
| COLOR_TYPE_CASE(1010102, kRGBA_1010102_SkColorType) |
| COLOR_TYPE_CASE(1010102_xr, kBGR_101010x_XR_SkColorType) |
| COLOR_TYPE_CASE(10x6, kRGBA_10x6_SkColorType) |
| |
| #undef COLOR_TYPE_CASE |
| |
| // Odd stage that doesn't have a load variant (appendLoad uses load_a8 + alpha_to_red) |
| case Op::store_r8: { |
| ct = kR8_unorm_SkColorType; |
| isStore = true; |
| break; |
| } |
| case Op::srcover_rgba_8888: { |
| ct = kRGBA_8888_SkColorType; |
| isLoad = true; |
| isStore = true; |
| break; |
| } |
| case Op::scale_u8: |
| case Op::lerp_u8: { |
| ct = kAlpha_8_SkColorType; |
| isLoad = true; |
| break; |
| } |
| case Op::scale_565: |
| case Op::lerp_565: { |
| ct = kRGB_565_SkColorType; |
| isLoad = true; |
| break; |
| } |
| case Op::emboss: { |
| // Special-case, this op uses a context that holds *two* MemoryCtxs |
| SkRasterPipeline_EmbossCtx* embossCtx = (SkRasterPipeline_EmbossCtx*)ctx; |
| this->addMemoryContext(&embossCtx->add, |
| SkColorTypeBytesPerPixel(kAlpha_8_SkColorType), |
| /*load=*/true, /*store=*/false); |
| this->addMemoryContext(&embossCtx->mul, |
| SkColorTypeBytesPerPixel(kAlpha_8_SkColorType), |
| /*load=*/true, /*store=*/false); |
| break; |
| } |
| case Op::init_lane_masks: { |
| auto* initCtx = (SkRasterPipeline_InitLaneMasksCtx*)ctx; |
| initCtx->tail = this->tailPointer(); |
| break; |
| } |
| case Op::branch_if_all_lanes_active: { |
| auto* branchCtx = (SkRasterPipeline_BranchIfAllLanesActiveCtx*)ctx; |
| branchCtx->tail = this->tailPointer(); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| fStages = fAlloc->make<StageList>(StageList{fStages, op, ctx}); |
| fNumStages += 1; |
| |
| if (isLoad || isStore) { |
| SkASSERT(ct != kUnknown_SkColorType); |
| this->addMemoryContext( |
| (SkRasterPipeline_MemoryCtx*)ctx, SkColorTypeBytesPerPixel(ct), isLoad, isStore); |
| } |
| } |
| |
| void SkRasterPipeline::append(SkRasterPipelineOp op, uintptr_t ctx) { |
| void* ptrCtx; |
| memcpy(&ptrCtx, &ctx, sizeof(ctx)); |
| this->append(op, ptrCtx); |
| } |
| |
| void SkRasterPipeline::extend(const SkRasterPipeline& src) { |
| if (src.empty()) { |
| return; |
| } |
| // Create a rewind context if `src` has one already, but we don't. If we _do_ already have one, |
| // we need to keep it, since we already have rewind ops that reference it. Either way, we need |
| // to rewrite all the rewind ops to point to _our_ rewind context; we only get that checkpoint. |
| if (src.fRewindCtx && !fRewindCtx) { |
| fRewindCtx = fAlloc->make<SkRasterPipeline_RewindCtx>(); |
| } |
| auto stages = fAlloc->makeArrayDefault<StageList>(src.fNumStages); |
| |
| int n = src.fNumStages; |
| const StageList* st = src.fStages; |
| while (n --> 1) { |
| stages[n] = *st; |
| stages[n].prev = &stages[n-1]; |
| |
| // We make sure that all ops use _our_ stack context and tail pointer. |
| switch (stages[n].stage) { |
| case Op::stack_rewind: { |
| stages[n].ctx = fRewindCtx; |
| break; |
| } |
| case Op::init_lane_masks: { |
| auto* ctx = (SkRasterPipeline_InitLaneMasksCtx*)stages[n].ctx; |
| ctx->tail = this->tailPointer(); |
| break; |
| } |
| case Op::branch_if_all_lanes_active: { |
| auto* ctx = (SkRasterPipeline_BranchIfAllLanesActiveCtx*)stages[n].ctx; |
| ctx->tail = this->tailPointer(); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| st = st->prev; |
| } |
| stages[0] = *st; |
| stages[0].prev = fStages; |
| |
| fStages = &stages[src.fNumStages - 1]; |
| fNumStages += src.fNumStages; |
| for (const SkRasterPipeline_MemoryCtxInfo& info : src.fMemoryCtxInfos) { |
| this->addMemoryContext(info.context, info.bytesPerPixel, info.load, info.store); |
| } |
| } |
| |
| const char* SkRasterPipeline::GetOpName(SkRasterPipelineOp op) { |
| const char* name = ""; |
| switch (op) { |
| #define M(x) case Op::x: name = #x; break; |
| SK_RASTER_PIPELINE_OPS_ALL(M) |
| #undef M |
| } |
| return name; |
| } |
| |
| void SkRasterPipeline::dump() const { |
| SkDebugf("SkRasterPipeline, %d stages\n", fNumStages); |
| std::vector<const char*> stages; |
| for (auto st = fStages; st; st = st->prev) { |
| stages.push_back(GetOpName(st->stage)); |
| } |
| std::reverse(stages.begin(), stages.end()); |
| for (const char* name : stages) { |
| SkDebugf("\t%s\n", name); |
| } |
| SkDebugf("\n"); |
| } |
| |
| void SkRasterPipeline::appendSetRGB(SkArenaAlloc* alloc, const float rgb[3]) { |
| auto arg = alloc->makeArrayDefault<float>(3); |
| arg[0] = rgb[0]; |
| arg[1] = rgb[1]; |
| arg[2] = rgb[2]; |
| |
| auto op = Op::unbounded_set_rgb; |
| if (0 <= rgb[0] && rgb[0] <= 1 && |
| 0 <= rgb[1] && rgb[1] <= 1 && |
| 0 <= rgb[2] && rgb[2] <= 1) |
| { |
| op = Op::set_rgb; |
| } |
| |
| this->uncheckedAppend(op, arg); |
| } |
| |
| void SkRasterPipeline::appendConstantColor(SkArenaAlloc* alloc, const float rgba[4]) { |
| // r,g,b might be outside [0,1], but alpha should probably always be in [0,1]. |
| SkASSERT(0 <= rgba[3] && rgba[3] <= 1); |
| |
| if (rgba[0] == 0 && rgba[1] == 0 && rgba[2] == 0 && rgba[3] == 1) { |
| this->append(Op::black_color); |
| } else if (rgba[0] == 1 && rgba[1] == 1 && rgba[2] == 1 && rgba[3] == 1) { |
| this->append(Op::white_color); |
| } else { |
| auto ctx = alloc->make<SkRasterPipeline_UniformColorCtx>(); |
| skvx::float4 color = skvx::float4::Load(rgba); |
| color.store(&ctx->r); |
| |
| // uniform_color requires colors in range and can go lowp, |
| // while unbounded_uniform_color supports out-of-range colors too but not lowp. |
| if (0 <= rgba[0] && rgba[0] <= rgba[3] && |
| 0 <= rgba[1] && rgba[1] <= rgba[3] && |
| 0 <= rgba[2] && rgba[2] <= rgba[3]) { |
| // To make loads more direct, we store 8-bit values in 16-bit slots. |
| color = color * 255.0f + 0.5f; |
| ctx->rgba[0] = (uint16_t)color[0]; |
| ctx->rgba[1] = (uint16_t)color[1]; |
| ctx->rgba[2] = (uint16_t)color[2]; |
| ctx->rgba[3] = (uint16_t)color[3]; |
| this->uncheckedAppend(Op::uniform_color, ctx); |
| } else { |
| this->uncheckedAppend(Op::unbounded_uniform_color, ctx); |
| } |
| } |
| } |
| |
| void SkRasterPipeline::appendMatrix(SkArenaAlloc* alloc, const SkMatrix& matrix) { |
| SkMatrix::TypeMask mt = matrix.getType(); |
| |
| if (mt == SkMatrix::kIdentity_Mask) { |
| return; |
| } |
| if (mt == SkMatrix::kTranslate_Mask) { |
| float* trans = alloc->makeArrayDefault<float>(2); |
| trans[0] = matrix.getTranslateX(); |
| trans[1] = matrix.getTranslateY(); |
| this->append(Op::matrix_translate, trans); |
| } else if ((mt | (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask)) == |
| (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask)) { |
| float* scaleTrans = alloc->makeArrayDefault<float>(4); |
| scaleTrans[0] = matrix.getScaleX(); |
| scaleTrans[1] = matrix.getScaleY(); |
| scaleTrans[2] = matrix.getTranslateX(); |
| scaleTrans[3] = matrix.getTranslateY(); |
| this->append(Op::matrix_scale_translate, scaleTrans); |
| } else { |
| float* storage = alloc->makeArrayDefault<float>(9); |
| matrix.get9(storage); |
| if (!matrix.hasPerspective()) { |
| // note: asAffine and the 2x3 stage really only need 6 entries |
| this->append(Op::matrix_2x3, storage); |
| } else { |
| this->append(Op::matrix_perspective, storage); |
| } |
| } |
| } |
| |
| void SkRasterPipeline::appendLoad(SkColorType ct, const SkRasterPipeline_MemoryCtx* ctx) { |
| switch (ct) { |
| case kUnknown_SkColorType: SkASSERT(false); break; |
| |
| case kAlpha_8_SkColorType: this->append(Op::load_a8, ctx); break; |
| case kA16_unorm_SkColorType: this->append(Op::load_a16, ctx); break; |
| case kA16_float_SkColorType: this->append(Op::load_af16, ctx); break; |
| case kRGB_565_SkColorType: this->append(Op::load_565, ctx); break; |
| case kARGB_4444_SkColorType: this->append(Op::load_4444, ctx); break; |
| case kR8G8_unorm_SkColorType: this->append(Op::load_rg88, ctx); break; |
| case kR16G16_unorm_SkColorType: this->append(Op::load_rg1616, ctx); break; |
| case kR16G16_float_SkColorType: this->append(Op::load_rgf16, ctx); break; |
| case kRGBA_8888_SkColorType: this->append(Op::load_8888, ctx); break; |
| case kRGBA_1010102_SkColorType: this->append(Op::load_1010102, ctx); break; |
| case kR16G16B16A16_unorm_SkColorType:this->append(Op::load_16161616,ctx); break; |
| case kRGBA_F16Norm_SkColorType: |
| case kRGBA_F16_SkColorType: this->append(Op::load_f16, ctx); break; |
| case kRGBA_F32_SkColorType: this->append(Op::load_f32, ctx); break; |
| case kRGBA_10x6_SkColorType: this->append(Op::load_10x6, ctx); break; |
| |
| case kGray_8_SkColorType: this->append(Op::load_a8, ctx); |
| this->append(Op::alpha_to_gray); |
| break; |
| |
| case kR8_unorm_SkColorType: this->append(Op::load_a8, ctx); |
| this->append(Op::alpha_to_red); |
| break; |
| |
| case kRGB_888x_SkColorType: this->append(Op::load_8888, ctx); |
| this->append(Op::force_opaque); |
| break; |
| |
| case kBGRA_1010102_SkColorType: this->append(Op::load_1010102, ctx); |
| this->append(Op::swap_rb); |
| break; |
| |
| case kRGB_101010x_SkColorType: this->append(Op::load_1010102, ctx); |
| this->append(Op::force_opaque); |
| break; |
| |
| case kBGR_101010x_SkColorType: this->append(Op::load_1010102, ctx); |
| this->append(Op::force_opaque); |
| this->append(Op::swap_rb); |
| break; |
| |
| case kBGR_101010x_XR_SkColorType: this->append(Op::load_1010102_xr, ctx); |
| this->append(Op::force_opaque); |
| this->append(Op::swap_rb); |
| break; |
| |
| case kBGRA_8888_SkColorType: this->append(Op::load_8888, ctx); |
| this->append(Op::swap_rb); |
| break; |
| |
| case kSRGBA_8888_SkColorType: |
| this->append(Op::load_8888, ctx); |
| this->appendTransferFunction(*skcms_sRGB_TransferFunction()); |
| break; |
| } |
| } |
| |
| void SkRasterPipeline::appendLoadDst(SkColorType ct, const SkRasterPipeline_MemoryCtx* ctx) { |
| switch (ct) { |
| case kUnknown_SkColorType: SkASSERT(false); break; |
| |
| case kAlpha_8_SkColorType: this->append(Op::load_a8_dst, ctx); break; |
| case kA16_unorm_SkColorType: this->append(Op::load_a16_dst, ctx); break; |
| case kA16_float_SkColorType: this->append(Op::load_af16_dst, ctx); break; |
| case kRGB_565_SkColorType: this->append(Op::load_565_dst, ctx); break; |
| case kARGB_4444_SkColorType: this->append(Op::load_4444_dst, ctx); break; |
| case kR8G8_unorm_SkColorType: this->append(Op::load_rg88_dst, ctx); break; |
| case kR16G16_unorm_SkColorType: this->append(Op::load_rg1616_dst, ctx); break; |
| case kR16G16_float_SkColorType: this->append(Op::load_rgf16_dst, ctx); break; |
| case kRGBA_8888_SkColorType: this->append(Op::load_8888_dst, ctx); break; |
| case kRGBA_1010102_SkColorType: this->append(Op::load_1010102_dst, ctx); break; |
| case kR16G16B16A16_unorm_SkColorType: this->append(Op::load_16161616_dst,ctx); break; |
| case kRGBA_F16Norm_SkColorType: |
| case kRGBA_F16_SkColorType: this->append(Op::load_f16_dst, ctx); break; |
| case kRGBA_F32_SkColorType: this->append(Op::load_f32_dst, ctx); break; |
| case kRGBA_10x6_SkColorType: this->append(Op::load_10x6_dst, ctx); break; |
| |
| case kGray_8_SkColorType: this->append(Op::load_a8_dst, ctx); |
| this->append(Op::alpha_to_gray_dst); |
| break; |
| |
| case kR8_unorm_SkColorType: this->append(Op::load_a8_dst, ctx); |
| this->append(Op::alpha_to_red_dst); |
| break; |
| |
| case kRGB_888x_SkColorType: this->append(Op::load_8888_dst, ctx); |
| this->append(Op::force_opaque_dst); |
| break; |
| |
| case kBGRA_1010102_SkColorType: this->append(Op::load_1010102_dst, ctx); |
| this->append(Op::swap_rb_dst); |
| break; |
| |
| case kRGB_101010x_SkColorType: this->append(Op::load_1010102_dst, ctx); |
| this->append(Op::force_opaque_dst); |
| break; |
| |
| case kBGR_101010x_SkColorType: this->append(Op::load_1010102_dst, ctx); |
| this->append(Op::force_opaque_dst); |
| this->append(Op::swap_rb_dst); |
| break; |
| |
| case kBGR_101010x_XR_SkColorType: this->append(Op::load_1010102_xr_dst, ctx); |
| this->append(Op::force_opaque_dst); |
| this->append(Op::swap_rb_dst); |
| break; |
| |
| case kBGRA_8888_SkColorType: this->append(Op::load_8888_dst, ctx); |
| this->append(Op::swap_rb_dst); |
| break; |
| |
| case kSRGBA_8888_SkColorType: |
| // TODO: We could remove the double-swap if we had _dst versions of all the TF stages |
| this->append(Op::load_8888_dst, ctx); |
| this->append(Op::swap_src_dst); |
| this->appendTransferFunction(*skcms_sRGB_TransferFunction()); |
| this->append(Op::swap_src_dst); |
| break; |
| } |
| } |
| |
| void SkRasterPipeline::appendStore(SkColorType ct, const SkRasterPipeline_MemoryCtx* ctx) { |
| switch (ct) { |
| case kUnknown_SkColorType: SkASSERT(false); break; |
| |
| case kAlpha_8_SkColorType: this->append(Op::store_a8, ctx); break; |
| case kR8_unorm_SkColorType: this->append(Op::store_r8, ctx); break; |
| case kA16_unorm_SkColorType: this->append(Op::store_a16, ctx); break; |
| case kA16_float_SkColorType: this->append(Op::store_af16, ctx); break; |
| case kRGB_565_SkColorType: this->append(Op::store_565, ctx); break; |
| case kARGB_4444_SkColorType: this->append(Op::store_4444, ctx); break; |
| case kR8G8_unorm_SkColorType: this->append(Op::store_rg88, ctx); break; |
| case kR16G16_unorm_SkColorType: this->append(Op::store_rg1616, ctx); break; |
| case kR16G16_float_SkColorType: this->append(Op::store_rgf16, ctx); break; |
| case kRGBA_8888_SkColorType: this->append(Op::store_8888, ctx); break; |
| case kRGBA_1010102_SkColorType: this->append(Op::store_1010102, ctx); break; |
| case kR16G16B16A16_unorm_SkColorType: this->append(Op::store_16161616,ctx); break; |
| case kRGBA_F16Norm_SkColorType: |
| case kRGBA_F16_SkColorType: this->append(Op::store_f16, ctx); break; |
| case kRGBA_F32_SkColorType: this->append(Op::store_f32, ctx); break; |
| case kRGBA_10x6_SkColorType: this->append(Op::store_10x6, ctx); break; |
| |
| case kRGB_888x_SkColorType: this->append(Op::force_opaque); |
| this->append(Op::store_8888, ctx); |
| break; |
| |
| case kBGRA_1010102_SkColorType: this->append(Op::swap_rb); |
| this->append(Op::store_1010102, ctx); |
| break; |
| |
| case kRGB_101010x_SkColorType: this->append(Op::force_opaque); |
| this->append(Op::store_1010102, ctx); |
| break; |
| |
| case kBGR_101010x_SkColorType: this->append(Op::force_opaque); |
| this->append(Op::swap_rb); |
| this->append(Op::store_1010102, ctx); |
| break; |
| |
| case kBGR_101010x_XR_SkColorType: this->append(Op::force_opaque); |
| this->append(Op::swap_rb); |
| this->append(Op::store_1010102_xr, ctx); |
| break; |
| |
| case kGray_8_SkColorType: this->append(Op::bt709_luminance_or_luma_to_alpha); |
| this->append(Op::store_a8, ctx); |
| break; |
| |
| case kBGRA_8888_SkColorType: this->append(Op::swap_rb); |
| this->append(Op::store_8888, ctx); |
| break; |
| |
| case kSRGBA_8888_SkColorType: |
| this->appendTransferFunction(*skcms_sRGB_Inverse_TransferFunction()); |
| this->append(Op::store_8888, ctx); |
| break; |
| } |
| } |
| |
| void SkRasterPipeline::appendTransferFunction(const skcms_TransferFunction& tf) { |
| void* ctx = const_cast<void*>(static_cast<const void*>(&tf)); |
| switch (skcms_TransferFunction_getType(&tf)) { |
| case skcms_TFType_Invalid: SkASSERT(false); break; |
| |
| case skcms_TFType_sRGBish: |
| if (tf.a == 1 && tf.b == 0 && tf.c == 0 && tf.d == 0 && tf.e == 0 && tf.f == 0) { |
| this->uncheckedAppend(Op::gamma_, ctx); |
| } else { |
| this->uncheckedAppend(Op::parametric, ctx); |
| } |
| break; |
| case skcms_TFType_PQish: this->uncheckedAppend(Op::PQish, ctx); break; |
| case skcms_TFType_HLGish: this->uncheckedAppend(Op::HLGish, ctx); break; |
| case skcms_TFType_HLGinvish: this->uncheckedAppend(Op::HLGinvish, ctx); break; |
| } |
| } |
| |
| // GPUs clamp all color channels to the limits of the format just before the blend step. To match |
| // that auto-clamp, the RP blitter uses this helper immediately before appending blending stages. |
| void SkRasterPipeline::appendClampIfNormalized(const SkImageInfo& info) { |
| if (SkColorTypeIsNormalized(info.colorType())) { |
| this->uncheckedAppend(Op::clamp_01, nullptr); |
| } |
| } |
| |
| void SkRasterPipeline::appendStackRewind() { |
| if (!fRewindCtx) { |
| fRewindCtx = fAlloc->make<SkRasterPipeline_RewindCtx>(); |
| } |
| this->uncheckedAppend(Op::stack_rewind, fRewindCtx); |
| } |
| |
| static void prepend_to_pipeline(SkRasterPipelineStage*& ip, SkOpts::StageFn stageFn, void* ctx) { |
| --ip; |
| ip->fn = stageFn; |
| ip->ctx = ctx; |
| } |
| |
| bool SkRasterPipeline::buildLowpPipeline(SkRasterPipelineStage* ip) const { |
| if (gForceHighPrecisionRasterPipeline || fRewindCtx) { |
| return false; |
| } |
| // Stages are stored backwards in fStages; to compensate, we assemble the pipeline in reverse |
| // here, back to front. |
| prepend_to_pipeline(ip, SkOpts::just_return_lowp, /*ctx=*/nullptr); |
| for (const StageList* st = fStages; st; st = st->prev) { |
| int opIndex = (int)st->stage; |
| if (opIndex >= kNumRasterPipelineLowpOps || !SkOpts::ops_lowp[opIndex]) { |
| // This program contains a stage that doesn't exist in lowp. |
| return false; |
| } |
| prepend_to_pipeline(ip, SkOpts::ops_lowp[opIndex], st->ctx); |
| } |
| return true; |
| } |
| |
| void SkRasterPipeline::buildHighpPipeline(SkRasterPipelineStage* ip) const { |
| // We assemble the pipeline in reverse, since the stage list is stored backwards. |
| prepend_to_pipeline(ip, SkOpts::just_return_highp, /*ctx=*/nullptr); |
| for (const StageList* st = fStages; st; st = st->prev) { |
| int opIndex = (int)st->stage; |
| prepend_to_pipeline(ip, SkOpts::ops_highp[opIndex], st->ctx); |
| } |
| |
| // stack_checkpoint and stack_rewind are only implemented in highp. We only need these stages |
| // when generating long (or looping) pipelines from SkSL. The other stages used by the SkSL |
| // Raster Pipeline generator will only have highp implementations, because we can't execute SkSL |
| // code without floating point. |
| if (fRewindCtx) { |
| const int rewindIndex = (int)Op::stack_checkpoint; |
| prepend_to_pipeline(ip, SkOpts::ops_highp[rewindIndex], fRewindCtx); |
| } |
| } |
| |
| SkRasterPipeline::StartPipelineFn SkRasterPipeline::buildPipeline(SkRasterPipelineStage* ip) const { |
| // We try to build a lowp pipeline first; if that fails, we fall back to a highp float pipeline. |
| if (this->buildLowpPipeline(ip)) { |
| return SkOpts::start_pipeline_lowp; |
| } |
| |
| this->buildHighpPipeline(ip); |
| return SkOpts::start_pipeline_highp; |
| } |
| |
| int SkRasterPipeline::stagesNeeded() const { |
| // Add 1 to budget for a `just_return` stage at the end. |
| int stages = fNumStages + 1; |
| |
| // If we have any stack_rewind stages, we will need to inject a stack_checkpoint stage. |
| if (fRewindCtx) { |
| stages += 1; |
| } |
| return stages; |
| } |
| |
| void SkRasterPipeline::run(size_t x, size_t y, size_t w, size_t h) const { |
| if (this->empty()) { |
| return; |
| } |
| |
| int stagesNeeded = this->stagesNeeded(); |
| |
| // Best to not use fAlloc here... we can't bound how often run() will be called. |
| AutoSTMalloc<32, SkRasterPipelineStage> program(stagesNeeded); |
| |
| int numMemoryCtxs = fMemoryCtxInfos.size(); |
| AutoSTMalloc<2, SkRasterPipeline_MemoryCtxPatch> patches(numMemoryCtxs); |
| for (int i = 0; i < numMemoryCtxs; ++i) { |
| patches[i].info = fMemoryCtxInfos[i]; |
| patches[i].backup = nullptr; |
| memset(patches[i].scratch, 0, sizeof(patches[i].scratch)); |
| } |
| |
| auto start_pipeline = this->buildPipeline(program.get() + stagesNeeded); |
| start_pipeline(x, y, x + w, y + h, program.get(), |
| SkSpan{patches.data(), numMemoryCtxs}, |
| fTailPointer); |
| } |
| |
| std::function<void(size_t, size_t, size_t, size_t)> SkRasterPipeline::compile() const { |
| if (this->empty()) { |
| return [](size_t, size_t, size_t, size_t) {}; |
| } |
| |
| int stagesNeeded = this->stagesNeeded(); |
| |
| SkRasterPipelineStage* program = fAlloc->makeArray<SkRasterPipelineStage>(stagesNeeded); |
| |
| int numMemoryCtxs = fMemoryCtxInfos.size(); |
| SkRasterPipeline_MemoryCtxPatch* patches = |
| fAlloc->makeArray<SkRasterPipeline_MemoryCtxPatch>(numMemoryCtxs); |
| for (int i = 0; i < numMemoryCtxs; ++i) { |
| patches[i].info = fMemoryCtxInfos[i]; |
| patches[i].backup = nullptr; |
| memset(patches[i].scratch, 0, sizeof(patches[i].scratch)); |
| } |
| uint8_t* tailPointer = fTailPointer; |
| |
| auto start_pipeline = this->buildPipeline(program + stagesNeeded); |
| return [=](size_t x, size_t y, size_t w, size_t h) { |
| start_pipeline(x, y, x + w, y + h, program, |
| SkSpan{patches, numMemoryCtxs}, |
| tailPointer); |
| }; |
| } |
| |
| void SkRasterPipeline::addMemoryContext(SkRasterPipeline_MemoryCtx* ctx, |
| int bytesPerPixel, |
| bool load, |
| bool store) { |
| SkRasterPipeline_MemoryCtxInfo* info = |
| std::find_if(fMemoryCtxInfos.begin(), fMemoryCtxInfos.end(), |
| [=](const SkRasterPipeline_MemoryCtxInfo& i) { return i.context == ctx; }); |
| if (info != fMemoryCtxInfos.end()) { |
| SkASSERT(bytesPerPixel == info->bytesPerPixel); |
| info->load = info->load || load; |
| info->store = info->store || store; |
| } else { |
| fMemoryCtxInfos.push_back(SkRasterPipeline_MemoryCtxInfo{ctx, bytesPerPixel, load, store}); |
| } |
| } |
