Greg Daniel | 48cf268 | 2016-02-22 09:11:32 -0500 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "GrVkSampler.h" |
| 9 | |
| 10 | #include "GrTextureAccess.h" |
| 11 | #include "GrVkGpu.h" |
| 12 | |
| 13 | static inline VkSamplerAddressMode tile_to_vk_sampler_address(SkShader::TileMode tm) {
|
| 14 | static const VkSamplerAddressMode gWrapModes[] = {
|
| 15 | VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
|
| 16 | VK_SAMPLER_ADDRESS_MODE_REPEAT,
|
| 17 | VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT
|
| 18 | };
|
| 19 | GR_STATIC_ASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gWrapModes));
|
| 20 | GR_STATIC_ASSERT(0 == SkShader::kClamp_TileMode);
|
| 21 | GR_STATIC_ASSERT(1 == SkShader::kRepeat_TileMode);
|
| 22 | GR_STATIC_ASSERT(2 == SkShader::kMirror_TileMode);
|
| 23 | return gWrapModes[tm];
|
| 24 | } |
| 25 | |
| 26 | GrVkSampler* GrVkSampler::Create(const GrVkGpu* gpu, const GrTextureAccess& textureAccess) { |
| 27 | |
| 28 | static VkFilter vkMinFilterModes[] = {
|
| 29 | VK_FILTER_NEAREST,
|
| 30 | VK_FILTER_LINEAR,
|
| 31 | VK_FILTER_LINEAR
|
| 32 | };
|
| 33 | static VkFilter vkMagFilterModes[] = {
|
| 34 | VK_FILTER_NEAREST,
|
| 35 | VK_FILTER_LINEAR,
|
| 36 | VK_FILTER_LINEAR
|
| 37 | }; |
| 38 | |
| 39 | const GrTextureParams& params = textureAccess.getParams(); |
| 40 | |
| 41 | VkSamplerCreateInfo createInfo; |
| 42 | memset(&createInfo, 0, sizeof(VkSamplerCreateInfo)); |
| 43 | createInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO; |
| 44 | createInfo.pNext = 0; |
| 45 | createInfo.flags = 0; |
| 46 | createInfo.magFilter = vkMagFilterModes[params.filterMode()]; |
| 47 | createInfo.minFilter = vkMinFilterModes[params.filterMode()]; |
| 48 | createInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST; |
| 49 | createInfo.addressModeU = tile_to_vk_sampler_address(params.getTileModeX()); |
| 50 | createInfo.addressModeV = tile_to_vk_sampler_address(params.getTileModeY()); |
| 51 | createInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; // Shouldn't matter |
| 52 | createInfo.mipLodBias = 0.0f; |
| 53 | createInfo.anisotropyEnable = VK_FALSE; |
| 54 | createInfo.maxAnisotropy = 1.0f; |
| 55 | createInfo.compareEnable = VK_FALSE; |
| 56 | createInfo.compareOp = VK_COMPARE_OP_NEVER; |
| 57 | createInfo.minLod = 0.0f; |
| 58 | createInfo.maxLod = 0.0f; |
| 59 | createInfo.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK; |
| 60 | createInfo.unnormalizedCoordinates = VK_FALSE; |
| 61 | |
| 62 | VkSampler sampler; |
| 63 | GR_VK_CALL_ERRCHECK(gpu->vkInterface(), CreateSampler(gpu->device(), |
| 64 | &createInfo, |
| 65 | nullptr, |
| 66 | &sampler)); |
| 67 | |
| 68 | return new GrVkSampler(sampler); |
| 69 | } |
| 70 | |
| 71 | void GrVkSampler::freeGPUData(const GrVkGpu* gpu) const { |
| 72 | SkASSERT(fSampler); |
| 73 | GR_VK_CALL(gpu->vkInterface(), DestroySampler(gpu->device(), fSampler, nullptr)); |
| 74 | } |