jvanverth | 992ad36 | 2016-02-26 09:21:02 -0800 | [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 | |
jvanverth | 6234006 | 2016-04-26 08:01:44 -0700 | [diff] [blame^] | 26 | GrVkSampler* GrVkSampler::Create(const GrVkGpu* gpu, const GrTextureParams& params, |
| 27 | uint32_t mipLevels) { |
jvanverth | 992ad36 | 2016-02-26 09:21:02 -0800 | [diff] [blame] | 28 | |
| 29 | static VkFilter vkMinFilterModes[] = { |
| 30 | VK_FILTER_NEAREST, |
| 31 | VK_FILTER_LINEAR, |
| 32 | VK_FILTER_LINEAR |
| 33 | }; |
| 34 | static VkFilter vkMagFilterModes[] = { |
| 35 | VK_FILTER_NEAREST, |
| 36 | VK_FILTER_LINEAR, |
| 37 | VK_FILTER_LINEAR |
| 38 | }; |
| 39 | |
jvanverth | 992ad36 | 2016-02-26 09:21:02 -0800 | [diff] [blame] | 40 | VkSamplerCreateInfo createInfo; |
| 41 | memset(&createInfo, 0, sizeof(VkSamplerCreateInfo)); |
| 42 | createInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO; |
| 43 | createInfo.pNext = 0; |
| 44 | createInfo.flags = 0; |
| 45 | createInfo.magFilter = vkMagFilterModes[params.filterMode()]; |
| 46 | createInfo.minFilter = vkMinFilterModes[params.filterMode()]; |
| 47 | createInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST; |
| 48 | createInfo.addressModeU = tile_to_vk_sampler_address(params.getTileModeX()); |
| 49 | createInfo.addressModeV = tile_to_vk_sampler_address(params.getTileModeY()); |
| 50 | createInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; // Shouldn't matter |
| 51 | createInfo.mipLodBias = 0.0f; |
| 52 | createInfo.anisotropyEnable = VK_FALSE; |
| 53 | createInfo.maxAnisotropy = 1.0f; |
| 54 | createInfo.compareEnable = VK_FALSE; |
| 55 | createInfo.compareOp = VK_COMPARE_OP_NEVER; |
egdaniel | 8f1dcaa | 2016-04-01 10:10:45 -0700 | [diff] [blame] | 56 | // Vulkan doesn't have a direct mapping of GL's nearest or linear filters for minFilter since |
| 57 | // there is always a mipmapMode. To get the same effect as GL we can set minLod = maxLod = 0.0. |
| 58 | // This works since our min and mag filters are the same (this forces us to use mag on the 0 |
| 59 | // level mip). If the filters weren't the same we could set min = 0 and max = 0.25 to force |
| 60 | // the minFilter on mip level 0. |
jvanverth | 992ad36 | 2016-02-26 09:21:02 -0800 | [diff] [blame] | 61 | createInfo.minLod = 0.0f; |
jvanverth | 6234006 | 2016-04-26 08:01:44 -0700 | [diff] [blame^] | 62 | createInfo.maxLod = (mipLevels == 1) ? 0.0f : (float)(mipLevels); |
jvanverth | 992ad36 | 2016-02-26 09:21:02 -0800 | [diff] [blame] | 63 | createInfo.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK; |
| 64 | createInfo.unnormalizedCoordinates = VK_FALSE; |
| 65 | |
| 66 | VkSampler sampler; |
| 67 | GR_VK_CALL_ERRCHECK(gpu->vkInterface(), CreateSampler(gpu->device(), |
| 68 | &createInfo, |
| 69 | nullptr, |
| 70 | &sampler)); |
| 71 | |
jvanverth | 6234006 | 2016-04-26 08:01:44 -0700 | [diff] [blame^] | 72 | return new GrVkSampler(sampler, GenerateKey(params, mipLevels)); |
jvanverth | 992ad36 | 2016-02-26 09:21:02 -0800 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | void GrVkSampler::freeGPUData(const GrVkGpu* gpu) const { |
| 76 | SkASSERT(fSampler); |
| 77 | GR_VK_CALL(gpu->vkInterface(), DestroySampler(gpu->device(), fSampler, nullptr)); |
| 78 | } |
egdaniel | 8b6394c | 2016-03-04 07:35:10 -0800 | [diff] [blame] | 79 | |
jvanverth | 6234006 | 2016-04-26 08:01:44 -0700 | [diff] [blame^] | 80 | uint16_t GrVkSampler::GenerateKey(const GrTextureParams& params, uint32_t mipLevels) { |
| 81 | const int kTileModeXShift = 2; |
| 82 | const int kTileModeYShift = 4; |
| 83 | const int kMipLevelShift = 6; |
egdaniel | 8b6394c | 2016-03-04 07:35:10 -0800 | [diff] [blame] | 84 | |
jvanverth | 6234006 | 2016-04-26 08:01:44 -0700 | [diff] [blame^] | 85 | uint16_t key = params.filterMode(); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 86 | |
egdaniel | 8b6394c | 2016-03-04 07:35:10 -0800 | [diff] [blame] | 87 | SkASSERT(params.filterMode() <= 3); |
jvanverth | 6234006 | 2016-04-26 08:01:44 -0700 | [diff] [blame^] | 88 | key |= (params.getTileModeX() << kTileModeXShift); |
egdaniel | 8b6394c | 2016-03-04 07:35:10 -0800 | [diff] [blame] | 89 | |
| 90 | GR_STATIC_ASSERT(SkShader::kTileModeCount <= 4); |
jvanverth | 6234006 | 2016-04-26 08:01:44 -0700 | [diff] [blame^] | 91 | key |= (params.getTileModeY() << kTileModeYShift); |
| 92 | |
| 93 | SkASSERT(mipLevels < 1024); |
| 94 | key |= (mipLevels << kMipLevelShift); |
egdaniel | 8b6394c | 2016-03-04 07:35:10 -0800 | [diff] [blame] | 95 | |
| 96 | return key; |
| 97 | } |