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// Copyright 2020 The Dawn Authors
//
// 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 "tests/DawnTest.h"
#include "common/Constants.h"
#include "common/Math.h"
#include "utils/ComboRenderPipelineDescriptor.h"
#include "utils/TestUtils.h"
#include "utils/TextureUtils.h"
#include "utils/WGPUHelpers.h"
namespace {
static constexpr wgpu::TextureFormat kTextureFormat = wgpu::TextureFormat::RGBA8Unorm;
// Set default texture size to single line texture for color conversion tests.
static constexpr uint64_t kDefaultTextureWidth = 10;
static constexpr uint64_t kDefaultTextureHeight = 1;
// Dst texture format copyTextureForBrowser accept
static const wgpu::TextureFormat kDstTextureFormats[] = {
wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureFormat::BGRA8Unorm,
wgpu::TextureFormat::RGBA32Float, wgpu::TextureFormat::RG8Unorm,
wgpu::TextureFormat::RGBA16Float, wgpu::TextureFormat::RG16Float,
wgpu::TextureFormat::RGB10A2Unorm};
static const wgpu::Origin3D kOrigins[] = {{1, 1}, {1, 2}, {2, 1}};
static const wgpu::Extent3D kCopySizes[] = {{1, 1}, {2, 1}, {1, 2}, {2, 2}};
static const wgpu::AlphaOp kAlphaOps[] = {wgpu::AlphaOp::DontChange, wgpu::AlphaOp::Premultiply,
wgpu::AlphaOp::Unpremultiply};
} // anonymous namespace
class CopyTextureForBrowserTests : public DawnTest {
protected:
struct TextureSpec {
wgpu::Origin3D copyOrigin = {};
wgpu::Extent3D textureSize = {kDefaultTextureWidth, kDefaultTextureHeight};
uint32_t level = 0;
wgpu::TextureFormat format = kTextureFormat;
};
// This fixed source texture data is for color conversion tests.
// The source data can fill a texture in default width and height.
static std::vector<RGBA8> GetFixedSourceTextureData() {
std::vector<RGBA8> sourceTextureData{
// Take RGBA8Unorm as example:
// R channel has different values
RGBA8(0, 255, 255, 255), // r = 0.0
RGBA8(102, 255, 255, 255), // r = 0.4
RGBA8(153, 255, 255, 255), // r = 0.6
// G channel has different values
RGBA8(255, 0, 255, 255), // g = 0.0
RGBA8(255, 102, 255, 255), // g = 0.4
RGBA8(255, 153, 255, 255), // g = 0.6
// B channel has different values
RGBA8(255, 255, 0, 255), // b = 0.0
RGBA8(255, 255, 102, 255), // b = 0.4
RGBA8(255, 255, 153, 255), // b = 0.6
// A channel set to 0
RGBA8(255, 255, 255, 0) // a = 0
};
return sourceTextureData;
}
enum class TextureCopyRole {
SOURCE,
DEST,
};
// Source texture contains red pixels and dst texture contains green pixels at start.
static std::vector<RGBA8> GetTextureData(const utils::TextureDataCopyLayout& layout,
TextureCopyRole textureRole,
wgpu::AlphaOp alphaOp = wgpu::AlphaOp::DontChange) {
std::array<uint8_t, 4> alpha = {0, 102, 153, 255}; // 0.0, 0.4, 0.6, 1.0
std::vector<RGBA8> textureData(layout.texelBlockCount);
for (uint32_t layer = 0; layer < layout.mipSize.depthOrArrayLayers; ++layer) {
const uint32_t sliceOffset = layout.texelBlocksPerImage * layer;
for (uint32_t y = 0; y < layout.mipSize.height; ++y) {
const uint32_t rowOffset = layout.texelBlocksPerRow * y;
for (uint32_t x = 0; x < layout.mipSize.width; ++x) {
// Source textures will have variable pixel data to cover cases like
// flipY.
if (textureRole == TextureCopyRole::SOURCE) {
switch (alphaOp) {
case wgpu::AlphaOp::DontChange:
textureData[sliceOffset + rowOffset + x] = RGBA8(
static_cast<uint8_t>((x + layer * x) % 256),
static_cast<uint8_t>((y + layer * y) % 256),
static_cast<uint8_t>(x % 256), static_cast<uint8_t>(x % 256));
break;
case wgpu::AlphaOp::Premultiply:
// For premultiply alpha test cases, we expect each channel in dst
// texture will equal to the alpha channel value.
textureData[sliceOffset + rowOffset + x] = RGBA8(
static_cast<uint8_t>(255), static_cast<uint8_t>(255),
static_cast<uint8_t>(255), static_cast<uint8_t>(alpha[x % 4]));
break;
case wgpu::AlphaOp::Unpremultiply:
// For unpremultiply alpha test cases, we expect each channel in dst
// texture will equal to 1.0.
textureData[sliceOffset + rowOffset + x] =
RGBA8(static_cast<uint8_t>(alpha[x % 4]),
static_cast<uint8_t>(alpha[x % 4]),
static_cast<uint8_t>(alpha[x % 4]),
static_cast<uint8_t>(alpha[x % 4]));
break;
default:
UNREACHABLE();
break;
}
} else { // Dst textures will have be init as `green` to ensure subrect
// copy not cross bound.
textureData[sliceOffset + rowOffset + x] =
RGBA8(static_cast<uint8_t>(0), static_cast<uint8_t>(255),
static_cast<uint8_t>(0), static_cast<uint8_t>(255));
}
}
}
}
return textureData;
}
void SetUp() override {
DawnTest::SetUp();
// crbug.com/dawn/948: Tint required for multiple entrypoints in a module.
// CopyTextureForBrowser uses and internal pipeline with a multi-entrypoint
// shader module.
DAWN_TEST_UNSUPPORTED_IF(!HasToggleEnabled("use_tint_generator"));
testPipeline = MakeTestPipeline();
uint32_t uniformBufferData[] = {
0, // copy have flipY option
4, // channelCount
0,
0, // uvec2, subrect copy src origin
0,
0, // uvec2, subrect copy dst origin
0,
0, // uvec2, subrect copy size
static_cast<uint32_t>(wgpu::AlphaOp::DontChange), // AlphaOp: DontChange
};
wgpu::BufferDescriptor uniformBufferDesc = {};
uniformBufferDesc.usage = wgpu::BufferUsage::CopyDst | wgpu::BufferUsage::Uniform;
uniformBufferDesc.size = sizeof(uniformBufferData);
uniformBuffer = device.CreateBuffer(&uniformBufferDesc);
}
// Do the bit-by-bit comparison between the source and destination texture with GPU (compute
// shader) instead of CPU after executing CopyTextureForBrowser() to avoid the errors caused by
// comparing a value generated on CPU to the one generated on GPU.
wgpu::ComputePipeline MakeTestPipeline() {
wgpu::ShaderModule csModule = utils::CreateShaderModule(device, R"(
[[block]] struct Uniforms {
dstTextureFlipY : u32;
channelCount : u32;
srcCopyOrigin : vec2<u32>;
dstCopyOrigin : vec2<u32>;
copySize : vec2<u32>;
alphaOp : u32;
};
[[block]] struct OutputBuf {
result : array<u32>;
};
[[group(0), binding(0)]] var src : texture_2d<f32>;
[[group(0), binding(1)]] var dst : texture_2d<f32>;
[[group(0), binding(2)]] var<storage, read_write> output : OutputBuf;
[[group(0), binding(3)]] var<uniform> uniforms : Uniforms;
fn aboutEqual(value : f32, expect : f32) -> bool {
// The value diff should be smaller than the hard coded tolerance.
return abs(value - expect) < 0.001;
}
[[stage(compute), workgroup_size(1, 1, 1)]]
fn main([[builtin(global_invocation_id)]] GlobalInvocationID : vec3<u32>) {
let srcSize = textureDimensions(src);
let dstSize = textureDimensions(dst);
let dstTexCoord = vec2<u32>(GlobalInvocationID.xy);
let nonCoveredColor = vec4<f32>(0.0, 1.0, 0.0, 1.0); // should be green
var success : bool = true;
if (dstTexCoord.x < uniforms.dstCopyOrigin.x ||
dstTexCoord.y < uniforms.dstCopyOrigin.y ||
dstTexCoord.x >= uniforms.dstCopyOrigin.x + uniforms.copySize.x ||
dstTexCoord.y >= uniforms.dstCopyOrigin.y + uniforms.copySize.y) {
success = success &&
all(textureLoad(dst, vec2<i32>(dstTexCoord), 0) == nonCoveredColor);
} else {
// Calculate source texture coord.
var srcTexCoord = dstTexCoord - uniforms.dstCopyOrigin +
uniforms.srcCopyOrigin;
// Note that |flipY| equals flip src texture firstly and then do copy from src
// subrect to dst subrect. This helps on blink part to handle some input texture
// which is flipped and need to unpack flip during the copy.
// We need to calculate the expect y coord based on this rule.
if (uniforms.dstTextureFlipY == 1u) {
srcTexCoord.y = u32(srcSize.y) - srcTexCoord.y - 1u;
}
var srcColor = textureLoad(src, vec2<i32>(srcTexCoord), 0);
var dstColor = textureLoad(dst, vec2<i32>(dstTexCoord), 0);
// Expect the dst texture channels should be all equal to alpha value
// after premultiply.
// TODO(crbug.com/1217153): if wgsl support `constexpr` and allow it
// to be case selector, Replace 0u/1u/2u with a constexpr variable with
// meaningful name.
switch(uniforms.alphaOp) {
case 0u: { // AlphaOp: DontChange
break;
}
case 1u: { // AlphaOp: Premultiply
srcColor = vec4<f32>(srcColor.rgb * srcColor.a, srcColor.a);
break;
}
case 2u: { // AlphaOp: Unpremultiply
if (srcColor.a != 0.0) {
srcColor = vec4<f32>(srcColor.rgb / srcColor.a, srcColor.a);
}
break;
}
default: {
break;
}
}
// Not use loop and variable index format to workaround
// crbug.com/tint/638.
if (uniforms.channelCount == 2u) { // All have rg components.
success = success &&
aboutEqual(dstColor.r, srcColor.r) &&
aboutEqual(dstColor.g, srcColor.g);
} else {
success = success &&
aboutEqual(dstColor.r, srcColor.r) &&
aboutEqual(dstColor.g, srcColor.g) &&
aboutEqual(dstColor.b, srcColor.b) &&
aboutEqual(dstColor.a, srcColor.a);
}
}
let outputIndex = GlobalInvocationID.y * u32(dstSize.x) + GlobalInvocationID.x;
if (success) {
output.result[outputIndex] = 1u;
} else {
output.result[outputIndex] = 0u;
}
}
)");
wgpu::ComputePipelineDescriptor csDesc;
csDesc.compute.module = csModule;
csDesc.compute.entryPoint = "main";
return device.CreateComputePipeline(&csDesc);
}
static uint32_t GetTextureFormatComponentCount(wgpu::TextureFormat format) {
switch (format) {
case wgpu::TextureFormat::RGBA8Unorm:
case wgpu::TextureFormat::BGRA8Unorm:
case wgpu::TextureFormat::RGB10A2Unorm:
case wgpu::TextureFormat::RGBA16Float:
case wgpu::TextureFormat::RGBA32Float:
return 4;
case wgpu::TextureFormat::RG8Unorm:
case wgpu::TextureFormat::RG16Float:
return 2;
default:
UNREACHABLE();
}
}
void DoColorConversionTest(const TextureSpec& srcSpec, const TextureSpec& dstSpec) {
DoTest(srcSpec, dstSpec, {kDefaultTextureWidth, kDefaultTextureHeight}, {}, true);
}
void DoTest(const TextureSpec& srcSpec,
const TextureSpec& dstSpec,
const wgpu::Extent3D& copySize = {kDefaultTextureWidth, kDefaultTextureHeight},
const wgpu::CopyTextureForBrowserOptions options = {},
bool useFixedTestValue = false) {
// Create and initialize src texture.
wgpu::TextureDescriptor srcDescriptor;
srcDescriptor.size = srcSpec.textureSize;
srcDescriptor.format = srcSpec.format;
srcDescriptor.mipLevelCount = srcSpec.level + 1;
srcDescriptor.usage =
wgpu::TextureUsage::CopySrc | wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::Sampled;
wgpu::Texture srcTexture = device.CreateTexture(&srcDescriptor);
const utils::TextureDataCopyLayout srcCopyLayout =
utils::GetTextureDataCopyLayoutForTextureAtLevel(
kTextureFormat,
{srcSpec.textureSize.width, srcSpec.textureSize.height,
copySize.depthOrArrayLayers},
srcSpec.level);
std::vector<RGBA8> srcTextureArrayCopyData;
if (useFixedTestValue) { // Use fixed value for color conversion tests.
srcTextureArrayCopyData = GetFixedSourceTextureData();
} else { // For other tests, the input format is always kTextureFormat.
srcTextureArrayCopyData =
GetTextureData(srcCopyLayout, TextureCopyRole::SOURCE, options.alphaOp);
}
wgpu::ImageCopyTexture srcImageTextureInit =
utils::CreateImageCopyTexture(srcTexture, srcSpec.level, {0, 0});
wgpu::TextureDataLayout srcTextureDataLayout;
srcTextureDataLayout.offset = 0;
srcTextureDataLayout.bytesPerRow = srcCopyLayout.bytesPerRow;
srcTextureDataLayout.rowsPerImage = srcCopyLayout.rowsPerImage;
device.GetQueue().WriteTexture(&srcImageTextureInit, srcTextureArrayCopyData.data(),
srcTextureArrayCopyData.size() * sizeof(RGBA8),
&srcTextureDataLayout, &srcCopyLayout.mipSize);
bool testSubRectCopy = srcSpec.copyOrigin.x > 0 || srcSpec.copyOrigin.y > 0 ||
dstSpec.copyOrigin.x > 0 || dstSpec.copyOrigin.y > 0 ||
srcSpec.textureSize.width > copySize.width ||
srcSpec.textureSize.height > copySize.height ||
dstSpec.textureSize.width > copySize.width ||
dstSpec.textureSize.height > copySize.height;
// Create and init dst texture.
wgpu::Texture dstTexture;
wgpu::TextureDescriptor dstDescriptor;
dstDescriptor.size = dstSpec.textureSize;
dstDescriptor.format = dstSpec.format;
dstDescriptor.mipLevelCount = dstSpec.level + 1;
dstDescriptor.usage = wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::Sampled |
wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
dstTexture = device.CreateTexture(&dstDescriptor);
if (testSubRectCopy) {
// For subrect copy tests, dst texture use kTextureFormat always.
const utils::TextureDataCopyLayout dstCopyLayout =
utils::GetTextureDataCopyLayoutForTextureAtLevel(
kTextureFormat,
{dstSpec.textureSize.width, dstSpec.textureSize.height,
copySize.depthOrArrayLayers},
dstSpec.level);
const std::vector<RGBA8> dstTextureArrayCopyData =
GetTextureData(dstCopyLayout, TextureCopyRole::DEST);
wgpu::TextureDataLayout dstTextureDataLayout;
dstTextureDataLayout.offset = 0;
dstTextureDataLayout.bytesPerRow = dstCopyLayout.bytesPerRow;
dstTextureDataLayout.rowsPerImage = dstCopyLayout.rowsPerImage;
wgpu::ImageCopyTexture dstImageTextureInit =
utils::CreateImageCopyTexture(dstTexture, dstSpec.level, {0, 0});
device.GetQueue().WriteTexture(&dstImageTextureInit, dstTextureArrayCopyData.data(),
dstTextureArrayCopyData.size() * sizeof(RGBA8),
&dstTextureDataLayout, &dstCopyLayout.mipSize);
}
// Perform the texture to texture copy
wgpu::ImageCopyTexture srcImageCopyTexture =
utils::CreateImageCopyTexture(srcTexture, srcSpec.level, srcSpec.copyOrigin);
wgpu::ImageCopyTexture dstImageCopyTexture =
utils::CreateImageCopyTexture(dstTexture, dstSpec.level, dstSpec.copyOrigin);
device.GetQueue().CopyTextureForBrowser(&srcImageCopyTexture, &dstImageCopyTexture,
&copySize, &options);
// Update uniform buffer based on test config
uint32_t uniformBufferData[] = {
options.flipY, // copy have flipY option
GetTextureFormatComponentCount(dstSpec.format), // channelCount
srcSpec.copyOrigin.x,
srcSpec.copyOrigin.y, // src texture copy origin
dstSpec.copyOrigin.x,
dstSpec.copyOrigin.y, // dst texture copy origin
copySize.width,
copySize.height, // copy size
static_cast<uint32_t>(options.alphaOp) // alphaOp
};
device.GetQueue().WriteBuffer(uniformBuffer, 0, uniformBufferData,
sizeof(uniformBufferData));
// Create output buffer to store result
wgpu::BufferDescriptor outputDesc;
outputDesc.size = dstSpec.textureSize.width * dstSpec.textureSize.height * sizeof(uint32_t);
outputDesc.usage =
wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst;
wgpu::Buffer outputBuffer = device.CreateBuffer(&outputDesc);
// Create texture views for test.
wgpu::TextureViewDescriptor srcTextureViewDesc = {};
srcTextureViewDesc.baseMipLevel = srcSpec.level;
wgpu::TextureView srcTextureView = srcTexture.CreateView(&srcTextureViewDesc);
wgpu::TextureViewDescriptor dstTextureViewDesc = {};
dstTextureViewDesc.baseMipLevel = dstSpec.level;
wgpu::TextureView dstTextureView = dstTexture.CreateView(&dstTextureViewDesc);
// Create bind group based on the config.
wgpu::BindGroup bindGroup = utils::MakeBindGroup(
device, testPipeline.GetBindGroupLayout(0),
{{0, srcTextureView}, {1, dstTextureView}, {2, outputBuffer}, {3, uniformBuffer}});
// Start a pipeline to check pixel value in bit form.
wgpu::CommandEncoder testEncoder = device.CreateCommandEncoder();
wgpu::CommandBuffer testCommands;
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::ComputePassEncoder pass = encoder.BeginComputePass();
pass.SetPipeline(testPipeline);
pass.SetBindGroup(0, bindGroup);
pass.Dispatch(dstSpec.textureSize.width,
dstSpec.textureSize.height); // Verify dst texture content
pass.EndPass();
testCommands = encoder.Finish();
}
queue.Submit(1, &testCommands);
std::vector<uint32_t> expectResult(dstSpec.textureSize.width * dstSpec.textureSize.height,
1);
EXPECT_BUFFER_U32_RANGE_EQ(expectResult.data(), outputBuffer, 0,
dstSpec.textureSize.width * dstSpec.textureSize.height);
}
wgpu::Buffer uniformBuffer; // Uniform buffer to store dst texture meta info.
wgpu::ComputePipeline testPipeline;
};
// Verify CopyTextureForBrowserTests works with internal pipeline.
// The case do copy without any transform.
TEST_P(CopyTextureForBrowserTests, PassthroughCopy) {
constexpr uint32_t kWidth = 10;
constexpr uint32_t kHeight = 1;
TextureSpec textureSpec;
textureSpec.textureSize = {kWidth, kHeight};
DoTest(textureSpec, textureSpec, {kWidth, kHeight});
}
TEST_P(CopyTextureForBrowserTests, VerifyCopyOnXDirection) {
constexpr uint32_t kWidth = 1000;
constexpr uint32_t kHeight = 1;
TextureSpec textureSpec;
textureSpec.textureSize = {kWidth, kHeight};
DoTest(textureSpec, textureSpec, {kWidth, kHeight});
}
TEST_P(CopyTextureForBrowserTests, VerifyCopyOnYDirection) {
constexpr uint32_t kWidth = 1;
constexpr uint32_t kHeight = 1000;
TextureSpec textureSpec;
textureSpec.textureSize = {kWidth, kHeight};
DoTest(textureSpec, textureSpec, {kWidth, kHeight});
}
TEST_P(CopyTextureForBrowserTests, VerifyCopyFromLargeTexture) {
constexpr uint32_t kWidth = 899;
constexpr uint32_t kHeight = 999;
TextureSpec textureSpec;
textureSpec.textureSize = {kWidth, kHeight};
DoTest(textureSpec, textureSpec, {kWidth, kHeight});
}
TEST_P(CopyTextureForBrowserTests, VerifyFlipY) {
constexpr uint32_t kWidth = 901;
constexpr uint32_t kHeight = 1001;
TextureSpec textureSpec;
textureSpec.textureSize = {kWidth, kHeight};
wgpu::CopyTextureForBrowserOptions options = {};
options.flipY = true;
DoTest(textureSpec, textureSpec, {kWidth, kHeight}, options);
}
TEST_P(CopyTextureForBrowserTests, VerifyFlipYInSlimTexture) {
constexpr uint32_t kWidth = 1;
constexpr uint32_t kHeight = 1001;
TextureSpec textureSpec;
textureSpec.textureSize = {kWidth, kHeight};
wgpu::CopyTextureForBrowserOptions options = {};
options.flipY = true;
DoTest(textureSpec, textureSpec, {kWidth, kHeight}, options);
}
// Verify |CopyTextureForBrowser| doing color conversion correctly when
// the source texture is RGBA8Unorm format.
TEST_P(CopyTextureForBrowserTests, FromRGBA8UnormCopy) {
// Skip OpenGLES backend because it fails on using RGBA8Unorm as
// source texture format.
DAWN_SUPPRESS_TEST_IF(IsOpenGLES());
for (wgpu::TextureFormat dstFormat : kDstTextureFormats) {
TextureSpec srcTextureSpec = {}; // default format is RGBA8Unorm
TextureSpec dstTextureSpec;
dstTextureSpec.format = dstFormat;
DoColorConversionTest(srcTextureSpec, dstTextureSpec);
}
}
// Verify |CopyTextureForBrowser| doing color conversion correctly when
// the source texture is BGRAUnorm format.
TEST_P(CopyTextureForBrowserTests, FromBGRA8UnormCopy) {
// Skip OpenGLES backend because it fails on using BGRA8Unorm as
// source texture format.
DAWN_SUPPRESS_TEST_IF(IsOpenGLES());
for (wgpu::TextureFormat dstFormat : kDstTextureFormats) {
TextureSpec srcTextureSpec;
srcTextureSpec.format = wgpu::TextureFormat::BGRA8Unorm;
TextureSpec dstTextureSpec;
dstTextureSpec.format = dstFormat;
DoColorConversionTest(srcTextureSpec, dstTextureSpec);
}
}
// Verify |CopyTextureForBrowser| doing subrect copy.
// Source texture is a full red texture and dst texture is a full
// green texture originally. After the subrect copy, affected part
// in dst texture should be red and other part should remain green.
TEST_P(CopyTextureForBrowserTests, CopySubRect) {
// Tests skip due to crbug.com/dawn/592.
DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsBackendValidationEnabled());
for (wgpu::Origin3D srcOrigin : kOrigins) {
for (wgpu::Origin3D dstOrigin : kOrigins) {
for (wgpu::Extent3D copySize : kCopySizes) {
for (bool flipY : {true, false}) {
TextureSpec srcTextureSpec;
srcTextureSpec.copyOrigin = srcOrigin;
srcTextureSpec.textureSize = {6, 7};
TextureSpec dstTextureSpec;
dstTextureSpec.copyOrigin = dstOrigin;
dstTextureSpec.textureSize = {8, 5};
wgpu::CopyTextureForBrowserOptions options = {};
options.flipY = flipY;
DoTest(srcTextureSpec, dstTextureSpec, copySize, options);
}
}
}
}
}
// Verify |CopyTextureForBrowser| doing alphaOp.
// Test alpha ops: DontChange, Premultiply, Unpremultiply.
TEST_P(CopyTextureForBrowserTests, alphaOp) {
// Skip OpenGLES backend because it fails on using RGBA8Unorm as
// source texture format.
DAWN_SUPPRESS_TEST_IF(IsOpenGLES());
constexpr uint32_t kWidth = 10;
constexpr uint32_t kHeight = 10;
TextureSpec textureSpec;
textureSpec.textureSize = {kWidth, kHeight};
for (wgpu::AlphaOp alphaOp : kAlphaOps) {
wgpu::CopyTextureForBrowserOptions options = {};
options.alphaOp = alphaOp;
DoTest(textureSpec, textureSpec, {kWidth, kHeight}, options);
}
}
DAWN_INSTANTIATE_TEST(CopyTextureForBrowserTests,
D3D12Backend(),
MetalBackend(),
OpenGLBackend(),
OpenGLESBackend(),
VulkanBackend());