| /* |
| * 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 "GrVkSampler.h" |
| |
| #include "GrVkGpu.h" |
| |
| static inline VkSamplerAddressMode wrap_mode_to_vk_sampler_address( |
| GrSamplerState::WrapMode wrapMode) { |
| switch (wrapMode) { |
| case GrSamplerState::WrapMode::kClamp: |
| return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; |
| case GrSamplerState::WrapMode::kRepeat: |
| return VK_SAMPLER_ADDRESS_MODE_REPEAT; |
| case GrSamplerState::WrapMode::kMirrorRepeat: |
| return VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT; |
| } |
| SK_ABORT("Unknown wrap mode."); |
| return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; |
| } |
| |
| GrVkSampler* GrVkSampler::Create(const GrVkGpu* gpu, const GrSamplerState& samplerState, |
| uint32_t maxMipLevel) { |
| static VkFilter vkMinFilterModes[] = { |
| VK_FILTER_NEAREST, |
| VK_FILTER_LINEAR, |
| VK_FILTER_LINEAR |
| }; |
| static VkFilter vkMagFilterModes[] = { |
| VK_FILTER_NEAREST, |
| VK_FILTER_LINEAR, |
| VK_FILTER_LINEAR |
| }; |
| |
| VkSamplerCreateInfo createInfo; |
| memset(&createInfo, 0, sizeof(VkSamplerCreateInfo)); |
| createInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO; |
| createInfo.pNext = 0; |
| createInfo.flags = 0; |
| createInfo.magFilter = vkMagFilterModes[static_cast<int>(samplerState.filter())]; |
| createInfo.minFilter = vkMinFilterModes[static_cast<int>(samplerState.filter())]; |
| createInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR; |
| createInfo.addressModeU = wrap_mode_to_vk_sampler_address(samplerState.wrapModeX()); |
| createInfo.addressModeV = wrap_mode_to_vk_sampler_address(samplerState.wrapModeY()); |
| createInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; // Shouldn't matter |
| createInfo.mipLodBias = 0.0f; |
| createInfo.anisotropyEnable = VK_FALSE; |
| createInfo.maxAnisotropy = 1.0f; |
| createInfo.compareEnable = VK_FALSE; |
| createInfo.compareOp = VK_COMPARE_OP_NEVER; |
| // Vulkan doesn't have a direct mapping of GL's nearest or linear filters for minFilter since |
| // there is always a mipmapMode. To get the same effect as GL we can set minLod = maxLod = 0.0. |
| // This works since our min and mag filters are the same (this forces us to use mag on the 0 |
| // level mip). If the filters weren't the same we could set min = 0 and max = 0.25 to force |
| // the minFilter on mip level 0. |
| createInfo.minLod = 0.0f; |
| bool useMipMaps = GrSamplerState::Filter::kMipMap == samplerState.filter() && maxMipLevel > 0; |
| createInfo.maxLod = !useMipMaps ? 0.0f : (float)(maxMipLevel); |
| createInfo.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK; |
| createInfo.unnormalizedCoordinates = VK_FALSE; |
| |
| VkSampler sampler; |
| GR_VK_CALL_ERRCHECK(gpu->vkInterface(), CreateSampler(gpu->device(), |
| &createInfo, |
| nullptr, |
| &sampler)); |
| |
| return new GrVkSampler(sampler, GenerateKey(samplerState, maxMipLevel)); |
| } |
| |
| void GrVkSampler::freeGPUData(const GrVkGpu* gpu) const { |
| SkASSERT(fSampler); |
| GR_VK_CALL(gpu->vkInterface(), DestroySampler(gpu->device(), fSampler, nullptr)); |
| } |
| |
| uint16_t GrVkSampler::GenerateKey(const GrSamplerState& samplerState, uint32_t maxMipLevel) { |
| const int kTileModeXShift = 2; |
| const int kTileModeYShift = 4; |
| const int kMipLevelShift = 6; |
| |
| SkASSERT(static_cast<int>(samplerState.filter()) <= 3); |
| uint16_t key = static_cast<uint16_t>(samplerState.filter()); |
| |
| SkASSERT(static_cast<int>(samplerState.wrapModeX()) <= 4); |
| key |= (static_cast<uint16_t>(samplerState.wrapModeX()) << kTileModeXShift); |
| |
| SkASSERT(static_cast<int>(samplerState.wrapModeY()) <= 4); |
| key |= (static_cast<uint16_t>(samplerState.wrapModeY()) << kTileModeYShift); |
| |
| SkASSERT(maxMipLevel < 1024); |
| key |= (maxMipLevel << kMipLevelShift); |
| |
| return key; |
| } |