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dawn / dawn / refs/heads/chromium/4787 / . / src / tests / unittests / validation / CopyCommandsValidationTests.cpp
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// Copyright 2017 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 "common/Assert.h"
#include "common/Constants.h"
#include "common/Math.h"
#include "tests/unittests/validation/ValidationTest.h"
#include "utils/TestUtils.h"
#include "utils/TextureUtils.h"
#include "utils/WGPUHelpers.h"
class CopyCommandTest : public ValidationTest {
protected:
wgpu::Buffer CreateBuffer(uint64_t size, wgpu::BufferUsage usage) {
wgpu::BufferDescriptor descriptor;
descriptor.size = size;
descriptor.usage = usage;
return device.CreateBuffer(&descriptor);
}
wgpu::Texture Create2DTexture(uint32_t width,
uint32_t height,
uint32_t mipLevelCount,
uint32_t arrayLayerCount,
wgpu::TextureFormat format,
wgpu::TextureUsage usage,
uint32_t sampleCount = 1) {
wgpu::TextureDescriptor descriptor;
descriptor.dimension = wgpu::TextureDimension::e2D;
descriptor.size.width = width;
descriptor.size.height = height;
descriptor.size.depthOrArrayLayers = arrayLayerCount;
descriptor.sampleCount = sampleCount;
descriptor.format = format;
descriptor.mipLevelCount = mipLevelCount;
descriptor.usage = usage;
wgpu::Texture tex = device.CreateTexture(&descriptor);
return tex;
}
wgpu::Texture Create3DTexture(uint32_t width,
uint32_t height,
uint32_t depth,
uint32_t mipLevelCount,
wgpu::TextureFormat format,
wgpu::TextureUsage usage) {
wgpu::TextureDescriptor descriptor;
descriptor.dimension = wgpu::TextureDimension::e3D;
descriptor.size.width = width;
descriptor.size.height = height;
descriptor.size.depthOrArrayLayers = depth;
descriptor.format = format;
descriptor.mipLevelCount = mipLevelCount;
descriptor.usage = usage;
wgpu::Texture tex = device.CreateTexture(&descriptor);
return tex;
}
uint32_t BufferSizeForTextureCopy(
uint32_t width,
uint32_t height,
uint32_t depth,
wgpu::TextureFormat format = wgpu::TextureFormat::RGBA8Unorm) {
uint32_t bytesPerPixel = utils::GetTexelBlockSizeInBytes(format);
uint32_t bytesPerRow = Align(width * bytesPerPixel, kTextureBytesPerRowAlignment);
return (bytesPerRow * (height - 1) + width * bytesPerPixel) * depth;
}
void ValidateExpectation(wgpu::CommandEncoder encoder, utils::Expectation expectation) {
if (expectation == utils::Expectation::Success) {
encoder.Finish();
} else {
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
void TestB2TCopy(utils::Expectation expectation,
wgpu::Buffer srcBuffer,
uint64_t srcOffset,
uint32_t srcBytesPerRow,
uint32_t srcRowsPerImage,
wgpu::Texture destTexture,
uint32_t destLevel,
wgpu::Origin3D destOrigin,
wgpu::Extent3D extent3D,
wgpu::TextureAspect aspect = wgpu::TextureAspect::All) {
wgpu::ImageCopyBuffer imageCopyBuffer =
utils::CreateImageCopyBuffer(srcBuffer, srcOffset, srcBytesPerRow, srcRowsPerImage);
wgpu::ImageCopyTexture imageCopyTexture =
utils::CreateImageCopyTexture(destTexture, destLevel, destOrigin, aspect);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToTexture(&imageCopyBuffer, &imageCopyTexture, &extent3D);
ValidateExpectation(encoder, expectation);
}
void TestT2BCopy(utils::Expectation expectation,
wgpu::Texture srcTexture,
uint32_t srcLevel,
wgpu::Origin3D srcOrigin,
wgpu::Buffer destBuffer,
uint64_t destOffset,
uint32_t destBytesPerRow,
uint32_t destRowsPerImage,
wgpu::Extent3D extent3D,
wgpu::TextureAspect aspect = wgpu::TextureAspect::All) {
wgpu::ImageCopyBuffer imageCopyBuffer =
utils::CreateImageCopyBuffer(destBuffer, destOffset, destBytesPerRow, destRowsPerImage);
wgpu::ImageCopyTexture imageCopyTexture =
utils::CreateImageCopyTexture(srcTexture, srcLevel, srcOrigin, aspect);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyTextureToBuffer(&imageCopyTexture, &imageCopyBuffer, &extent3D);
ValidateExpectation(encoder, expectation);
}
void TestT2TCopy(utils::Expectation expectation,
wgpu::Texture srcTexture,
uint32_t srcLevel,
wgpu::Origin3D srcOrigin,
wgpu::Texture dstTexture,
uint32_t dstLevel,
wgpu::Origin3D dstOrigin,
wgpu::Extent3D extent3D,
wgpu::TextureAspect aspect = wgpu::TextureAspect::All) {
wgpu::ImageCopyTexture srcImageCopyTexture =
utils::CreateImageCopyTexture(srcTexture, srcLevel, srcOrigin, aspect);
wgpu::ImageCopyTexture dstImageCopyTexture =
utils::CreateImageCopyTexture(dstTexture, dstLevel, dstOrigin, aspect);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyTextureToTexture(&srcImageCopyTexture, &dstImageCopyTexture, &extent3D);
ValidateExpectation(encoder, expectation);
}
void TestBothTBCopies(utils::Expectation expectation,
wgpu::Buffer buffer,
uint64_t bufferOffset,
uint32_t bufferBytesPerRow,
uint32_t rowsPerImage,
wgpu::Texture texture,
uint32_t level,
wgpu::Origin3D origin,
wgpu::Extent3D extent3D) {
TestB2TCopy(expectation, buffer, bufferOffset, bufferBytesPerRow, rowsPerImage, texture,
level, origin, extent3D);
TestT2BCopy(expectation, texture, level, origin, buffer, bufferOffset, bufferBytesPerRow,
rowsPerImage, extent3D);
}
void TestBothT2TCopies(utils::Expectation expectation,
wgpu::Texture texture1,
uint32_t level1,
wgpu::Origin3D origin1,
wgpu::Texture texture2,
uint32_t level2,
wgpu::Origin3D origin2,
wgpu::Extent3D extent3D) {
TestT2TCopy(expectation, texture1, level1, origin1, texture2, level2, origin2, extent3D);
TestT2TCopy(expectation, texture2, level2, origin2, texture1, level1, origin1, extent3D);
}
void TestBothTBCopiesExactBufferSize(uint32_t bufferBytesPerRow,
uint32_t rowsPerImage,
wgpu::Texture texture,
wgpu::TextureFormat textureFormat,
wgpu::Origin3D origin,
wgpu::Extent3D extent3D) {
// Check the minimal valid bufferSize.
uint64_t bufferSize =
utils::RequiredBytesInCopy(bufferBytesPerRow, rowsPerImage, extent3D, textureFormat);
wgpu::Buffer source =
CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
TestBothTBCopies(utils::Expectation::Success, source, 0, bufferBytesPerRow, rowsPerImage,
texture, 0, origin, extent3D);
// Check bufferSize was indeed minimal.
uint64_t invalidSize = bufferSize - 1;
wgpu::Buffer invalidSource =
CreateBuffer(invalidSize, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
TestBothTBCopies(utils::Expectation::Failure, invalidSource, 0, bufferBytesPerRow,
rowsPerImage, texture, 0, origin, extent3D);
}
};
// Test copies between buffer and multiple array layers of an uncompressed texture
TEST_F(CopyCommandTest, CopyToMultipleArrayLayers) {
wgpu::Texture destination =
CopyCommandTest::Create2DTexture(4, 2, 1, 5, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::CopySrc);
// Copy to all array layers
TestBothTBCopiesExactBufferSize(256, 2, destination, wgpu::TextureFormat::RGBA8Unorm, {0, 0, 0},
{4, 2, 5});
// Copy to the highest array layer
TestBothTBCopiesExactBufferSize(256, 2, destination, wgpu::TextureFormat::RGBA8Unorm, {0, 0, 4},
{4, 2, 1});
// Copy to array layers in the middle
TestBothTBCopiesExactBufferSize(256, 2, destination, wgpu::TextureFormat::RGBA8Unorm, {0, 0, 1},
{4, 2, 3});
// Copy with a non-packed rowsPerImage
TestBothTBCopiesExactBufferSize(256, 3, destination, wgpu::TextureFormat::RGBA8Unorm, {0, 0, 0},
{4, 2, 5});
// Copy with bytesPerRow = 512
TestBothTBCopiesExactBufferSize(512, 2, destination, wgpu::TextureFormat::RGBA8Unorm, {0, 0, 1},
{4, 2, 3});
}
class CopyCommandTest_B2B : public CopyCommandTest {};
// TODO(cwallez@chromium.org): Test that copies are forbidden inside renderpasses
// Test a successfull B2B copy
TEST_F(CopyCommandTest_B2B, Success) {
wgpu::Buffer source = CreateBuffer(16, wgpu::BufferUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
// Copy different copies, including some that touch the OOB condition
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 0, destination, 0, 16);
encoder.CopyBufferToBuffer(source, 8, destination, 0, 8);
encoder.CopyBufferToBuffer(source, 0, destination, 8, 8);
encoder.Finish();
}
// Empty copies are valid
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 0, destination, 0, 0);
encoder.CopyBufferToBuffer(source, 0, destination, 16, 0);
encoder.CopyBufferToBuffer(source, 16, destination, 0, 0);
encoder.Finish();
}
}
// Test a successful B2B copy where the last external reference is dropped.
// This is a regression test for crbug.com/1217741 where submitting a command
// buffer with dropped resources when the copy size is 0 was a use-after-free.
TEST_F(CopyCommandTest_B2B, DroppedBuffer) {
wgpu::Buffer source = CreateBuffer(16, wgpu::BufferUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 0, destination, 0, 0);
wgpu::CommandBuffer commandBuffer = encoder.Finish();
source = nullptr;
destination = nullptr;
device.GetQueue().Submit(1, &commandBuffer);
}
// Test B2B copies with OOB
TEST_F(CopyCommandTest_B2B, OutOfBounds) {
wgpu::Buffer source = CreateBuffer(16, wgpu::BufferUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
// OOB on the source
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 8, destination, 0, 12);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// OOB on the destination
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 0, destination, 8, 12);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Test B2B copies with incorrect buffer usage
TEST_F(CopyCommandTest_B2B, BadUsage) {
wgpu::Buffer source = CreateBuffer(16, wgpu::BufferUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
wgpu::Buffer vertex = CreateBuffer(16, wgpu::BufferUsage::Vertex);
// Source with incorrect usage
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(vertex, 0, destination, 0, 16);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Destination with incorrect usage
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 0, vertex, 0, 16);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Test B2B copies with unaligned data size
TEST_F(CopyCommandTest_B2B, UnalignedSize) {
wgpu::Buffer source = CreateBuffer(16, wgpu::BufferUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 8, destination, 0, sizeof(uint8_t));
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Test B2B copies with unaligned offset
TEST_F(CopyCommandTest_B2B, UnalignedOffset) {
wgpu::Buffer source = CreateBuffer(16, wgpu::BufferUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
// Unaligned source offset
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 9, destination, 0, 4);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Unaligned destination offset
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(source, 8, destination, 1, 4);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Test B2B copies with buffers in error state cause errors.
TEST_F(CopyCommandTest_B2B, BuffersInErrorState) {
wgpu::BufferDescriptor errorBufferDescriptor;
errorBufferDescriptor.size = 4;
errorBufferDescriptor.usage =
wgpu::BufferUsage::MapRead | wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst;
ASSERT_DEVICE_ERROR(wgpu::Buffer errorBuffer = device.CreateBuffer(&errorBufferDescriptor));
constexpr uint64_t bufferSize = 4;
wgpu::Buffer validBuffer =
CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(errorBuffer, 0, validBuffer, 0, 4);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(validBuffer, 0, errorBuffer, 0, 4);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Test it is not allowed to do B2B copies within same buffer.
TEST_F(CopyCommandTest_B2B, CopyWithinSameBuffer) {
constexpr uint32_t kBufferSize = 16u;
wgpu::Buffer buffer =
CreateBuffer(kBufferSize, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
// srcOffset < dstOffset, and srcOffset + copySize > dstOffset (overlapping)
{
constexpr uint32_t kSrcOffset = 0u;
constexpr uint32_t kDstOffset = 4u;
constexpr uint32_t kCopySize = 8u;
ASSERT(kDstOffset > kSrcOffset && kDstOffset < kSrcOffset + kCopySize);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(buffer, kSrcOffset, buffer, kDstOffset, kCopySize);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// srcOffset < dstOffset, and srcOffset + copySize == dstOffset (not overlapping)
{
constexpr uint32_t kSrcOffset = 0u;
constexpr uint32_t kDstOffset = 8u;
constexpr uint32_t kCopySize = kDstOffset - kSrcOffset;
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(buffer, kSrcOffset, buffer, kDstOffset, kCopySize);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// srcOffset > dstOffset, and srcOffset < dstOffset + copySize (overlapping)
{
constexpr uint32_t kSrcOffset = 4u;
constexpr uint32_t kDstOffset = 0u;
constexpr uint32_t kCopySize = 8u;
ASSERT(kSrcOffset > kDstOffset && kSrcOffset < kDstOffset + kCopySize);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(buffer, kSrcOffset, buffer, kDstOffset, kCopySize);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// srcOffset > dstOffset, and srcOffset + copySize == dstOffset (not overlapping)
{
constexpr uint32_t kSrcOffset = 8u;
constexpr uint32_t kDstOffset = 0u;
constexpr uint32_t kCopySize = kSrcOffset - kDstOffset;
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToBuffer(buffer, kSrcOffset, buffer, kDstOffset, kCopySize);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
class CopyCommandTest_B2T : public CopyCommandTest {
protected:
WGPUDevice CreateTestDevice() override {
wgpu::DeviceDescriptor descriptor;
wgpu::FeatureName requiredFeatures[2] = {wgpu::FeatureName::Depth24UnormStencil8,
wgpu::FeatureName::Depth32FloatStencil8};
descriptor.requiredFeatures = requiredFeatures;
descriptor.requiredFeaturesCount = 2;
return adapter.CreateDevice(&descriptor);
}
};
// Test a successfull B2T copy
TEST_F(CopyCommandTest_B2T, Success) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Different copies, including some that touch the OOB condition
{
// Copy 4x4 block in corner of first mip.
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 4, destination, 0, {0, 0, 0},
{4, 4, 1});
// Copy 4x4 block in opposite corner of first mip.
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 4, destination, 0, {12, 12, 0},
{4, 4, 1});
// Copy 4x4 block in the 4x4 mip.
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 4, destination, 2, {0, 0, 0},
{4, 4, 1});
// Copy with a buffer offset
TestB2TCopy(utils::Expectation::Success, source, bufferSize - 4, 256, 1, destination, 0,
{0, 0, 0}, {1, 1, 1});
TestB2TCopy(utils::Expectation::Success, source, bufferSize - 4, 256,
wgpu::kCopyStrideUndefined, destination, 0, {0, 0, 0}, {1, 1, 1});
}
// Copies with a 256-byte aligned bytes per row but unaligned texture region
{
// Unaligned region
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 4, destination, 0, {0, 0, 0},
{3, 4, 1});
// Unaligned region with texture offset
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 3, destination, 0, {5, 7, 0},
{2, 3, 1});
// Unaligned region, with buffer offset
TestB2TCopy(utils::Expectation::Success, source, 31 * 4, 256, 3, destination, 0, {0, 0, 0},
{3, 3, 1});
}
// bytesPerRow is undefined
{
TestB2TCopy(utils::Expectation::Success, source, 0, wgpu::kCopyStrideUndefined, 2,
destination, 0, {0, 0, 0}, {1, 1, 1});
TestB2TCopy(utils::Expectation::Success, source, 0, wgpu::kCopyStrideUndefined, 2,
destination, 0, {0, 0, 0}, {3, 1, 1});
// Fail because height or depth is greater than 1:
TestB2TCopy(utils::Expectation::Failure, source, 0, wgpu::kCopyStrideUndefined, 2,
destination, 0, {0, 0, 0}, {1, 2, 1});
TestB2TCopy(utils::Expectation::Failure, source, 0, wgpu::kCopyStrideUndefined, 2,
destination, 0, {0, 0, 0}, {1, 1, 2});
}
// Empty copies are valid
{
// An empty copy
TestB2TCopy(utils::Expectation::Success, source, 0, 0, 0, destination, 0, {0, 0, 0},
{0, 0, 1});
TestB2TCopy(utils::Expectation::Success, source, 0, wgpu::kCopyStrideUndefined, 0,
destination, 0, {0, 0, 0}, {0, 0, 1});
// An empty copy with depth = 0
TestB2TCopy(utils::Expectation::Success, source, 0, 0, 0, destination, 0, {0, 0, 0},
{0, 0, 0});
TestB2TCopy(utils::Expectation::Success, source, 0, wgpu::kCopyStrideUndefined, 0,
destination, 0, {0, 0, 0}, {0, 0, 0});
// An empty copy touching the end of the buffer
TestB2TCopy(utils::Expectation::Success, source, bufferSize, 0, 0, destination, 0,
{0, 0, 0}, {0, 0, 1});
TestB2TCopy(utils::Expectation::Success, source, bufferSize, wgpu::kCopyStrideUndefined, 0,
destination, 0, {0, 0, 0}, {0, 0, 1});
// An empty copy touching the side of the texture
TestB2TCopy(utils::Expectation::Success, source, 0, 0, 0, destination, 0, {16, 16, 0},
{0, 0, 1});
TestB2TCopy(utils::Expectation::Success, source, 0, wgpu::kCopyStrideUndefined, 0,
destination, 0, {16, 16, 0}, {0, 0, 1});
// An empty copy with depth = 1 and bytesPerRow > 0
TestB2TCopy(utils::Expectation::Success, source, 0, kTextureBytesPerRowAlignment, 0,
destination, 0, {0, 0, 0}, {0, 0, 1});
// An empty copy with height > 0, depth = 0, bytesPerRow > 0 and rowsPerImage > 0
TestB2TCopy(utils::Expectation::Success, source, 0, kTextureBytesPerRowAlignment, 3,
destination, 0, {0, 0, 0}, {0, 1, 0});
}
}
// Test OOB conditions on the buffer
TEST_F(CopyCommandTest_B2T, OutOfBoundsOnBuffer) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// OOB on the buffer because we copy too many pixels
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 5, destination, 0, {0, 0, 0},
{4, 5, 1});
// OOB on the buffer because of the offset
TestB2TCopy(utils::Expectation::Failure, source, 4, 256, 4, destination, 0, {0, 0, 0},
{4, 4, 1});
// OOB on the buffer because (bytes per row * (height - 1) + width * bytesPerPixel) * depth
// overflows
TestB2TCopy(utils::Expectation::Failure, source, 0, 512, 3, destination, 0, {0, 0, 0},
{4, 3, 1});
// Not OOB on the buffer although bytes per row * height overflows
// but (bytes per row * (height - 1) + width * bytesPerPixel) * depth does not overflow
{
uint32_t sourceBufferSize = BufferSizeForTextureCopy(7, 3, 1);
ASSERT_TRUE(256 * 3 > sourceBufferSize) << "bytes per row * height should overflow buffer";
wgpu::Buffer sourceBuffer = CreateBuffer(sourceBufferSize, wgpu::BufferUsage::CopySrc);
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 3, destination, 0, {0, 0, 0},
{7, 3, 1});
}
}
// Test OOB conditions on the texture
TEST_F(CopyCommandTest_B2T, OutOfBoundsOnTexture) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 2, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// OOB on the texture because x + width overflows
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 4, destination, 0, {13, 12, 0},
{4, 4, 1});
// OOB on the texture because y + width overflows
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 4, destination, 0, {12, 13, 0},
{4, 4, 1});
// OOB on the texture because we overflow a non-zero mip
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 4, destination, 2, {1, 0, 0},
{4, 4, 1});
// OOB on the texture even on an empty copy when we copy to a non-existent mip.
TestB2TCopy(utils::Expectation::Failure, source, 0, 0, 0, destination, 5, {0, 0, 0}, {0, 0, 1});
// OOB on the texture because slice overflows
TestB2TCopy(utils::Expectation::Failure, source, 0, 0, 0, destination, 0, {0, 0, 2}, {0, 0, 1});
}
// Test that we force Depth=1 on copies to 2D textures
TEST_F(CopyCommandTest_B2T, DepthConstraintFor2DTextures) {
wgpu::Buffer source = CreateBuffer(16 * 4, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Depth > 1 on an empty copy still errors
TestB2TCopy(utils::Expectation::Failure, source, 0, 0, 0, destination, 0, {0, 0, 0}, {0, 0, 2});
}
// Test B2T copies with incorrect buffer usage
TEST_F(CopyCommandTest_B2T, IncorrectUsage) {
wgpu::Buffer source = CreateBuffer(16 * 4, wgpu::BufferUsage::CopySrc);
wgpu::Buffer vertex = CreateBuffer(16 * 4, wgpu::BufferUsage::Vertex);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
wgpu::Texture sampled = Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::TextureBinding);
// Incorrect source usage
TestB2TCopy(utils::Expectation::Failure, vertex, 0, 256, 4, destination, 0, {0, 0, 0},
{4, 4, 1});
// Incorrect destination usage
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 4, sampled, 0, {0, 0, 0}, {4, 4, 1});
}
TEST_F(CopyCommandTest_B2T, BytesPerRowConstraints) {
uint64_t bufferSize = BufferSizeForTextureCopy(128, 16, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination = Create2DTexture(128, 16, 5, 5, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopyDst);
// bytes per row is 0
{
// copyHeight > 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 0, 4, destination, 0, {0, 0, 0},
{64, 4, 1});
TestB2TCopy(utils::Expectation::Success, source, 0, 0, 4, destination, 0, {0, 0, 0},
{0, 4, 1});
// copyDepth > 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 0, 1, destination, 0, {0, 0, 0},
{64, 1, 4});
TestB2TCopy(utils::Expectation::Success, source, 0, 0, 1, destination, 0, {0, 0, 0},
{0, 1, 4});
// copyHeight = 1 and copyDepth = 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 0, 1, destination, 0, {0, 0, 0},
{64, 1, 1});
}
// bytes per row is not 256-byte aligned
{
// copyHeight > 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 128, 4, destination, 0, {0, 0, 0},
{4, 4, 1});
// copyHeight = 1 and copyDepth = 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 128, 1, destination, 0, {0, 0, 0},
{4, 1, 1});
}
// bytes per row is less than width * bytesPerPixel
{
// copyHeight > 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 2, destination, 0, {0, 0, 0},
{65, 2, 1});
// copyHeight == 0
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 0, destination, 0, {0, 0, 0},
{65, 0, 1});
// copyDepth > 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, 0, {0, 0, 0},
{65, 1, 2});
// copyDepth == 0
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, 0, {0, 0, 0},
{65, 1, 0});
// copyHeight = 1 and copyDepth = 1
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, 0, {0, 0, 0},
{65, 1, 1});
}
}
TEST_F(CopyCommandTest_B2T, RowsPerImageConstraints) {
uint64_t bufferSize = BufferSizeForTextureCopy(5, 5, 6);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 5, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// rowsPerImage is zero
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 0, destination, 0, {0, 0, 0},
{1, 1, 1});
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 0, destination, 0, {0, 0, 0},
{4, 4, 1});
// rowsPerImage is undefined
TestB2TCopy(utils::Expectation::Success, source, 0, 256, wgpu::kCopyStrideUndefined,
destination, 0, {0, 0, 0}, {4, 4, 1});
// Fail because depth > 1:
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, wgpu::kCopyStrideUndefined,
destination, 0, {0, 0, 0}, {4, 4, 2});
// rowsPerImage is equal to copy height (Valid)
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 4, destination, 0, {0, 0, 0},
{4, 4, 1});
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 4, destination, 0, {0, 0, 0},
{4, 4, 2});
// rowsPerImage is larger than copy height (Valid)
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 5, destination, 0, {0, 0, 0},
{4, 4, 1});
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 5, destination, 0, {0, 0, 0},
{4, 4, 2});
// rowsPerImage is less than copy height (Invalid)
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 3, destination, 0, {0, 0, 0},
{4, 4, 1});
}
// Test B2T copies with incorrect buffer offset usage for color texture
TEST_F(CopyCommandTest_B2T, IncorrectBufferOffsetForColorTexture) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Correct usage
TestB2TCopy(utils::Expectation::Success, source, bufferSize - 4, 256, 1, destination, 0,
{0, 0, 0}, {1, 1, 1});
// Incorrect usages
{
TestB2TCopy(utils::Expectation::Failure, source, bufferSize - 5, 256, 1, destination, 0,
{0, 0, 0}, {1, 1, 1});
TestB2TCopy(utils::Expectation::Failure, source, bufferSize - 6, 256, 1, destination, 0,
{0, 0, 0}, {1, 1, 1});
TestB2TCopy(utils::Expectation::Failure, source, bufferSize - 7, 256, 1, destination, 0,
{0, 0, 0}, {1, 1, 1});
}
}
// Test B2T copies with incorrect buffer offset usage for depth-stencil texture
TEST_F(CopyCommandTest_B2T, IncorrectBufferOffsetForDepthStencilTexture) {
// TODO(dawn:570, dawn:666): List other valid parameters after missing texture formats
// are implemented, e.g. Stencil8 and depth16unorm.
std::array<std::tuple<wgpu::TextureFormat, wgpu::TextureAspect>, 3> params = {
std::make_tuple(wgpu::TextureFormat::Depth24PlusStencil8, wgpu::TextureAspect::StencilOnly),
std::make_tuple(wgpu::TextureFormat::Depth24UnormStencil8,
wgpu::TextureAspect::StencilOnly),
std::make_tuple(wgpu::TextureFormat::Depth32FloatStencil8,
wgpu::TextureAspect::StencilOnly),
};
uint64_t bufferSize = BufferSizeForTextureCopy(32, 32, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
for (auto param : params) {
wgpu::TextureFormat textureFormat = std::get<0>(param);
wgpu::TextureAspect textureAspect = std::get<1>(param);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 1, textureFormat, wgpu::TextureUsage::CopyDst);
for (uint64_t srcOffset = 0; srcOffset < 8; srcOffset++) {
utils::Expectation expectation =
(srcOffset % 4 == 0) ? utils::Expectation::Success : utils::Expectation::Failure;
TestB2TCopy(expectation, source, srcOffset, 256, 16, destination, 0, {0, 0, 0},
{16, 16, 1}, textureAspect);
}
}
}
// Test multisampled textures cannot be used in B2T copies.
TEST_F(CopyCommandTest_B2T, CopyToMultisampledTexture) {
uint64_t bufferSize = BufferSizeForTextureCopy(16, 16, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination = Create2DTexture(2, 2, 1, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopyDst, 4);
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 2, destination, 0, {0, 0, 0},
{2, 2, 1});
}
// Test B2T copies with buffer or texture in error state causes errors.
TEST_F(CopyCommandTest_B2T, BufferOrTextureInErrorState) {
wgpu::BufferDescriptor errorBufferDescriptor;
errorBufferDescriptor.size = 4;
errorBufferDescriptor.usage = wgpu::BufferUsage::MapRead | wgpu::BufferUsage::CopySrc;
ASSERT_DEVICE_ERROR(wgpu::Buffer errorBuffer = device.CreateBuffer(&errorBufferDescriptor));
wgpu::TextureDescriptor errorTextureDescriptor;
errorTextureDescriptor.size.depthOrArrayLayers = 0;
ASSERT_DEVICE_ERROR(wgpu::Texture errorTexture = device.CreateTexture(&errorTextureDescriptor));
wgpu::ImageCopyBuffer errorImageCopyBuffer = utils::CreateImageCopyBuffer(errorBuffer, 0, 0, 0);
wgpu::ImageCopyTexture errorImageCopyTexture =
utils::CreateImageCopyTexture(errorTexture, 0, {0, 0, 0});
wgpu::Extent3D extent3D = {0, 0, 0};
{
wgpu::Texture destination = Create2DTexture(16, 16, 1, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopyDst);
wgpu::ImageCopyTexture imageCopyTexture =
utils::CreateImageCopyTexture(destination, 0, {0, 0, 0});
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToTexture(&errorImageCopyBuffer, &imageCopyTexture, &extent3D);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
{
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::ImageCopyBuffer imageCopyBuffer = utils::CreateImageCopyBuffer(source, 0, 0, 0);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyBufferToTexture(&imageCopyBuffer, &errorImageCopyTexture, &extent3D);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Regression tests for a bug in the computation of texture copy buffer size in Dawn.
TEST_F(CopyCommandTest_B2T, TextureCopyBufferSizeLastRowComputation) {
constexpr uint32_t kBytesPerRow = 256;
constexpr uint32_t kWidth = 4;
constexpr uint32_t kHeight = 4;
constexpr std::array<wgpu::TextureFormat, 2> kFormats = {wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureFormat::RG8Unorm};
{
// kBytesPerRow * (kHeight - 1) + kWidth is not large enough to be the valid buffer size in
// this test because the buffer sizes in B2T copies are not in texels but in bytes.
constexpr uint32_t kInvalidBufferSize = kBytesPerRow * (kHeight - 1) + kWidth;
for (wgpu::TextureFormat format : kFormats) {
wgpu::Buffer source = CreateBuffer(kInvalidBufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(kWidth, kHeight, 1, 1, format, wgpu::TextureUsage::CopyDst);
TestB2TCopy(utils::Expectation::Failure, source, 0, kBytesPerRow, kHeight, destination,
0, {0, 0, 0}, {kWidth, kHeight, 1});
}
}
{
for (wgpu::TextureFormat format : kFormats) {
uint32_t validBufferSize = BufferSizeForTextureCopy(kWidth, kHeight, 1, format);
wgpu::Texture destination =
Create2DTexture(kWidth, kHeight, 1, 1, format, wgpu::TextureUsage::CopyDst);
// Verify the return value of BufferSizeForTextureCopy() is exactly the minimum valid
// buffer size in this test.
{
uint32_t invalidBuffferSize = validBufferSize - 1;
wgpu::Buffer source = CreateBuffer(invalidBuffferSize, wgpu::BufferUsage::CopySrc);
TestB2TCopy(utils::Expectation::Failure, source, 0, kBytesPerRow, kHeight,
destination, 0, {0, 0, 0}, {kWidth, kHeight, 1});
}
{
wgpu::Buffer source = CreateBuffer(validBufferSize, wgpu::BufferUsage::CopySrc);
TestB2TCopy(utils::Expectation::Success, source, 0, kBytesPerRow, kHeight,
destination, 0, {0, 0, 0}, {kWidth, kHeight, 1});
}
}
}
}
// Test copy from buffer to mip map of non square texture
TEST_F(CopyCommandTest_B2T, CopyToMipmapOfNonSquareTexture) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 2, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
uint32_t maxMipmapLevel = 3;
wgpu::Texture destination = Create2DTexture(
4, 2, maxMipmapLevel, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Copy to top level mip map
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 1, destination, maxMipmapLevel - 1,
{0, 0, 0}, {1, 1, 1});
// Copy to high level mip map
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 1, destination, maxMipmapLevel - 2,
{0, 0, 0}, {2, 1, 1});
// Mip level out of range
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, maxMipmapLevel,
{0, 0, 0}, {1, 1, 1});
// Copy origin out of range
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, maxMipmapLevel - 2,
{1, 0, 0}, {2, 1, 1});
// Copy size out of range
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 2, destination, maxMipmapLevel - 2,
{0, 0, 0}, {2, 2, 1});
}
// Test it is invalid to copy to a depth texture
TEST_F(CopyCommandTest_B2T, CopyToDepthAspect) {
uint64_t bufferSize = BufferSizeForTextureCopy(16, 16, 1, wgpu::TextureFormat::Depth32Float);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
for (wgpu::TextureFormat format : utils::kDepthFormats) {
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopyDst);
// Test it is invalid to copy from a buffer into a depth texture
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 16, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::DepthOnly);
if (utils::IsDepthOnlyFormat(format)) {
// Test "all" of a depth texture which is only the depth aspect.
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 16, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::All);
}
}
}
// Test copy to only the stencil aspect of a texture
TEST_F(CopyCommandTest_B2T, CopyToStencilAspect) {
uint64_t bufferSize = BufferSizeForTextureCopy(16, 16, 1, wgpu::TextureFormat::R8Uint);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
for (wgpu::TextureFormat format : utils::kStencilFormats) {
// Test it is valid to copy from a buffer into the stencil aspect of a depth/stencil texture
{
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopyDst);
// TODO(dawn:666): Test "all" of Stencil8 format when it's implemented.
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 16, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
// And that it fails if the buffer is one byte too small
wgpu::Buffer sourceSmall = CreateBuffer(bufferSize - 1, wgpu::BufferUsage::CopySrc);
TestB2TCopy(utils::Expectation::Failure, sourceSmall, 0, 256, 16, destination, 0,
{0, 0, 0}, {16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
// A copy fails when using a depth/stencil texture, and the entire subresource isn't copied
{
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 1, format,
wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::RenderAttachment);
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 15, destination, 0, {0, 0, 0},
{15, 15, 1}, wgpu::TextureAspect::StencilOnly);
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, 0, {0, 0, 0},
{1, 1, 1}, wgpu::TextureAspect::StencilOnly);
}
// Non-zero mip: A copy fails when using a depth/stencil texture, and the entire subresource
// isn't copied
{
uint64_t bufferSize = BufferSizeForTextureCopy(8, 8, 1, wgpu::TextureFormat::R8Uint);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 2, 1, format,
wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::RenderAttachment);
// Whole mip is success
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 8, destination, 1, {0, 0, 0},
{8, 8, 1}, wgpu::TextureAspect::StencilOnly);
// Partial mip fails
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 7, destination, 1, {0, 0, 0},
{7, 7, 1}, wgpu::TextureAspect::StencilOnly);
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, 1, {0, 0, 0},
{1, 1, 1}, wgpu::TextureAspect::StencilOnly);
}
// Non-zero mip, non-pow-2: A copy fails when using a depth/stencil texture, and the entire
// subresource isn't copied
{
uint64_t bufferSize = BufferSizeForTextureCopy(8, 8, 1, wgpu::TextureFormat::R8Uint);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(17, 17, 2, 1, format,
wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::RenderAttachment);
// Whole mip is success
TestB2TCopy(utils::Expectation::Success, source, 0, 256, 8, destination, 1, {0, 0, 0},
{8, 8, 1}, wgpu::TextureAspect::StencilOnly);
// Partial mip fails
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 7, destination, 1, {0, 0, 0},
{7, 7, 1}, wgpu::TextureAspect::StencilOnly);
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 1, destination, 1, {0, 0, 0},
{1, 1, 1}, wgpu::TextureAspect::StencilOnly);
}
}
// Test it is invalid to copy from a buffer into the stencil aspect of Depth24Plus (no stencil)
{
wgpu::Texture destination = Create2DTexture(16, 16, 1, 1, wgpu::TextureFormat::Depth24Plus,
wgpu::TextureUsage::CopyDst);
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 16, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
// Test it is invalid to copy from a buffer into the stencil aspect of a color texture
{
wgpu::Texture destination = Create2DTexture(16, 16, 1, 1, wgpu::TextureFormat::RGBA8Uint,
wgpu::TextureUsage::CopyDst);
TestB2TCopy(utils::Expectation::Failure, source, 0, 256, 16, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
}
// Test that CopyB2T throws an error when requiredBytesInCopy overflows uint64_t
TEST_F(CopyCommandTest_B2T, RequiredBytesInCopyOverflow) {
wgpu::Buffer source = CreateBuffer(10000, wgpu::BufferUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(1, 1, 1, 16, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Success
TestB2TCopy(utils::Expectation::Success, source, 0, (1 << 31), (1 << 31), destination, 0,
{0, 0, 0}, {1, 1, 1});
// Failure because bytesPerImage * (depth - 1) overflows
TestB2TCopy(utils::Expectation::Failure, source, 0, (1 << 31), (1 << 31), destination, 0,
{0, 0, 0}, {1, 1, 16});
}
class CopyCommandTest_T2B : public CopyCommandTest {
protected:
WGPUDevice CreateTestDevice() override {
wgpu::DeviceDescriptor descriptor;
wgpu::FeatureName requiredFeatures[2] = {wgpu::FeatureName::Depth24UnormStencil8,
wgpu::FeatureName::Depth32FloatStencil8};
descriptor.requiredFeatures = requiredFeatures;
descriptor.requiredFeaturesCount = 2;
return adapter.CreateDevice(&descriptor);
}
};
// Test a successfull T2B copy
TEST_F(CopyCommandTest_T2B, Success) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Texture source =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// Different copies, including some that touch the OOB condition
{
// Copy from 4x4 block in corner of first mip.
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 4,
{4, 4, 1});
// Copy from 4x4 block in opposite corner of first mip.
TestT2BCopy(utils::Expectation::Success, source, 0, {12, 12, 0}, destination, 0, 256, 4,
{4, 4, 1});
// Copy from 4x4 block in the 4x4 mip.
TestT2BCopy(utils::Expectation::Success, source, 2, {0, 0, 0}, destination, 0, 256, 4,
{4, 4, 1});
// Copy with a buffer offset
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, bufferSize - 4,
256, 1, {1, 1, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, bufferSize - 4,
256, wgpu::kCopyStrideUndefined, {1, 1, 1});
}
// Copies with a 256-byte aligned bytes per row but unaligned texture region
{
// Unaligned region
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 4,
{3, 4, 1});
// Unaligned region with texture offset
TestT2BCopy(utils::Expectation::Success, source, 0, {5, 7, 0}, destination, 0, 256, 3,
{2, 3, 1});
// Unaligned region, with buffer offset
TestT2BCopy(utils::Expectation::Success, source, 2, {0, 0, 0}, destination, 31 * 4, 256, 3,
{3, 3, 1});
}
// bytesPerRow is undefined
{
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
wgpu::kCopyStrideUndefined, 2, {1, 1, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
wgpu::kCopyStrideUndefined, 2, {3, 1, 1});
// Fail because height or depth is greater than 1:
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0,
wgpu::kCopyStrideUndefined, 2, {1, 2, 1});
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0,
wgpu::kCopyStrideUndefined, 2, {1, 1, 2});
}
// Empty copies are valid
{
// An empty copy
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 0, 0,
{0, 0, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
wgpu::kCopyStrideUndefined, 0, {0, 0, 1});
// An empty copy with depth = 0
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 0, 0,
{0, 0, 0});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
wgpu::kCopyStrideUndefined, 0, {0, 0, 0});
// An empty copy touching the end of the buffer
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, bufferSize, 0,
0, {0, 0, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, bufferSize,
wgpu::kCopyStrideUndefined, 0, {0, 0, 1});
// An empty copy touching the side of the texture
TestT2BCopy(utils::Expectation::Success, source, 0, {16, 16, 0}, destination, 0, 0, 0,
{0, 0, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {16, 16, 0}, destination, 0,
wgpu::kCopyStrideUndefined, 0, {0, 0, 1});
// An empty copy with depth = 1 and bytesPerRow > 0
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
kTextureBytesPerRowAlignment, 0, {0, 0, 1});
// An empty copy with height > 0, depth = 0, bytesPerRow > 0 and rowsPerImage > 0
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
kTextureBytesPerRowAlignment, 3, {0, 1, 0});
}
}
// Edge cases around requiredBytesInCopy computation for empty copies
TEST_F(CopyCommandTest_T2B, Empty) {
wgpu::Texture source =
Create2DTexture(16, 16, 1, 2, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0},
CreateBuffer(0, wgpu::BufferUsage::CopyDst), 0, 256, 4, {0, 0, 0});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0},
CreateBuffer(0, wgpu::BufferUsage::CopyDst), 0, 256, 4, {4, 0, 0});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0},
CreateBuffer(0, wgpu::BufferUsage::CopyDst), 0, 256, 4, {4, 4, 0});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0},
CreateBuffer(1024, wgpu::BufferUsage::CopyDst), 0, 256, 4, {4, 0, 2});
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0},
CreateBuffer(1023, wgpu::BufferUsage::CopyDst), 0, 256, 4, {4, 0, 2});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0},
CreateBuffer(1792, wgpu::BufferUsage::CopyDst), 0, 256, 4, {0, 4, 2});
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0},
CreateBuffer(1791, wgpu::BufferUsage::CopyDst), 0, 256, 4, {0, 4, 2});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0},
CreateBuffer(1024, wgpu::BufferUsage::CopyDst), 0, 256, 4, {0, 0, 2});
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0},
CreateBuffer(1023, wgpu::BufferUsage::CopyDst), 0, 256, 4, {0, 0, 2});
}
// Test OOB conditions on the texture
TEST_F(CopyCommandTest_T2B, OutOfBoundsOnTexture) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Texture source =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// OOB on the texture because x + width overflows
TestT2BCopy(utils::Expectation::Failure, source, 0, {13, 12, 0}, destination, 0, 256, 4,
{4, 4, 1});
// OOB on the texture because y + width overflows
TestT2BCopy(utils::Expectation::Failure, source, 0, {12, 13, 0}, destination, 0, 256, 4,
{4, 4, 1});
// OOB on the texture because we overflow a non-zero mip
TestT2BCopy(utils::Expectation::Failure, source, 2, {1, 0, 0}, destination, 0, 256, 4,
{4, 4, 1});
// OOB on the texture even on an empty copy when we copy from a non-existent mip.
TestT2BCopy(utils::Expectation::Failure, source, 5, {0, 0, 0}, destination, 0, 0, 4, {0, 0, 1});
}
// Test OOB conditions on the buffer
TEST_F(CopyCommandTest_T2B, OutOfBoundsOnBuffer) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Texture source =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// OOB on the buffer because we copy too many pixels
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 5,
{4, 5, 1});
// OOB on the buffer because of the offset
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 4, 256, 4,
{4, 4, 1});
// OOB on the buffer because (bytes per row * (height - 1) + width * bytesPerPixel) * depth
// overflows
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 512, 3,
{4, 3, 1});
// Not OOB on the buffer although bytes per row * height overflows
// but (bytes per row * (height - 1) + width * bytesPerPixel) * depth does not overflow
{
uint32_t destinationBufferSize = BufferSizeForTextureCopy(7, 3, 1);
ASSERT_TRUE(256 * 3 > destinationBufferSize)
<< "bytes per row * height should overflow buffer";
wgpu::Buffer destinationBuffer =
CreateBuffer(destinationBufferSize, wgpu::BufferUsage::CopyDst);
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destinationBuffer, 0, 256, 3,
{7, 3, 1});
}
}
// Test that we force Depth=1 on copies from to 2D textures
TEST_F(CopyCommandTest_T2B, DepthConstraintFor2DTextures) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Texture source =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// Depth > 1 on an empty copy still errors
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 0, 0, {0, 0, 2});
}
// Test T2B copies with incorrect buffer usage
TEST_F(CopyCommandTest_T2B, IncorrectUsage) {
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Texture source =
Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Texture sampled = Create2DTexture(16, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::TextureBinding);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
wgpu::Buffer vertex = CreateBuffer(bufferSize, wgpu::BufferUsage::Vertex);
// Incorrect source usage
TestT2BCopy(utils::Expectation::Failure, sampled, 0, {0, 0, 0}, destination, 0, 256, 4,
{4, 4, 1});
// Incorrect destination usage
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, vertex, 0, 256, 4, {4, 4, 1});
}
TEST_F(CopyCommandTest_T2B, BytesPerRowConstraints) {
uint64_t bufferSize = BufferSizeForTextureCopy(128, 16, 1);
wgpu::Texture source = Create2DTexture(128, 16, 5, 5, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// bytes per row is 0
{
// copyHeight > 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 0, 4,
{64, 4, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 0, 4,
{0, 4, 1});
// copyDepth > 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 0, 1,
{64, 1, 4});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 0, 1,
{0, 1, 4});
// copyHeight = 1 and copyDepth = 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 0, 1,
{64, 1, 1});
}
// bytes per row is not 256-byte aligned
{
// copyHeight > 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 128, 4,
{4, 4, 1});
// copyHeight = 1 and copyDepth = 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 128, 1,
{4, 1, 1});
}
// bytes per row is less than width * bytesPerPixel
{
// copyHeight > 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 2,
{65, 2, 1});
// copyHeight == 0
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 0,
{65, 0, 1});
// copyDepth > 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 1,
{65, 1, 2});
// copyDepth == 0
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 1,
{65, 1, 0});
// copyHeight = 1 and copyDepth = 1
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 1,
{65, 1, 1});
}
}
TEST_F(CopyCommandTest_T2B, RowsPerImageConstraints) {
uint64_t bufferSize = BufferSizeForTextureCopy(5, 5, 6);
wgpu::Texture source =
Create2DTexture(16, 16, 1, 5, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// rowsPerImage is zero (Valid)
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 0,
{1, 1, 1});
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 0,
{4, 4, 1});
// rowsPerImage is undefined
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256,
wgpu::kCopyStrideUndefined, {4, 4, 1});
// Fail because depth > 1:
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256,
wgpu::kCopyStrideUndefined, {4, 4, 2});
// rowsPerImage is equal to copy height (Valid)
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 4,
{4, 4, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 4,
{4, 4, 2});
// rowsPerImage exceeds copy height (Valid)
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 5,
{4, 4, 1});
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 5,
{4, 4, 2});
// rowsPerImage is less than copy height (Invalid)
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 3,
{4, 4, 1});
}
// Test T2B copies with incorrect buffer offset usage for color texture
TEST_F(CopyCommandTest_T2B, IncorrectBufferOffsetForColorTexture) {
uint64_t bufferSize = BufferSizeForTextureCopy(128, 16, 1);
wgpu::Texture source = Create2DTexture(128, 16, 5, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// Correct usage
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, bufferSize - 4, 256,
1, {1, 1, 1});
// Incorrect usages
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, bufferSize - 5, 256,
1, {1, 1, 1});
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, bufferSize - 6, 256,
1, {1, 1, 1});
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, bufferSize - 7, 256,
1, {1, 1, 1});
}
// Test T2B copies with incorrect buffer offset usage for depth-stencil texture
TEST_F(CopyCommandTest_T2B, IncorrectBufferOffsetForDepthStencilTexture) {
// TODO(dawn:570, dawn:666): List other valid parameters after missing texture formats
// are implemented, e.g. Stencil8 and depth16unorm.
std::array<std::tuple<wgpu::TextureFormat, wgpu::TextureAspect>, 6> params = {
std::make_tuple(wgpu::TextureFormat::Depth24PlusStencil8, wgpu::TextureAspect::StencilOnly),
std::make_tuple(wgpu::TextureFormat::Depth32Float, wgpu::TextureAspect::DepthOnly),
std::make_tuple(wgpu::TextureFormat::Depth32Float, wgpu::TextureAspect::All),
std::make_tuple(wgpu::TextureFormat::Depth24UnormStencil8,
wgpu::TextureAspect::StencilOnly),
std::make_tuple(wgpu::TextureFormat::Depth32FloatStencil8, wgpu::TextureAspect::DepthOnly),
std::make_tuple(wgpu::TextureFormat::Depth32FloatStencil8,
wgpu::TextureAspect::StencilOnly),
};
uint64_t bufferSize = BufferSizeForTextureCopy(32, 32, 1);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
for (auto param : params) {
wgpu::TextureFormat textureFormat = std::get<0>(param);
wgpu::TextureAspect textureAspect = std::get<1>(param);
wgpu::Texture source =
Create2DTexture(16, 16, 5, 1, textureFormat, wgpu::TextureUsage::CopySrc);
for (uint64_t dstOffset = 0; dstOffset < 8; dstOffset++) {
utils::Expectation expectation =
(dstOffset % 4 == 0) ? utils::Expectation::Success : utils::Expectation::Failure;
TestT2BCopy(expectation, source, 0, {0, 0, 0}, destination, dstOffset, 256, 16,
{16, 16, 1}, textureAspect);
}
}
}
// Test multisampled textures cannot be used in T2B copies.
TEST_F(CopyCommandTest_T2B, CopyFromMultisampledTexture) {
wgpu::Texture source = Create2DTexture(2, 2, 1, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc, 4);
uint64_t bufferSize = BufferSizeForTextureCopy(16, 16, 1);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 2,
{2, 2, 1});
}
// Test T2B copies with buffer or texture in error state cause errors.
TEST_F(CopyCommandTest_T2B, BufferOrTextureInErrorState) {
wgpu::BufferDescriptor errorBufferDescriptor;
errorBufferDescriptor.size = 4;
errorBufferDescriptor.usage = wgpu::BufferUsage::MapRead | wgpu::BufferUsage::CopySrc;
ASSERT_DEVICE_ERROR(wgpu::Buffer errorBuffer = device.CreateBuffer(&errorBufferDescriptor));
wgpu::TextureDescriptor errorTextureDescriptor;
errorTextureDescriptor.size.depthOrArrayLayers = 0;
ASSERT_DEVICE_ERROR(wgpu::Texture errorTexture = device.CreateTexture(&errorTextureDescriptor));
wgpu::ImageCopyBuffer errorImageCopyBuffer = utils::CreateImageCopyBuffer(errorBuffer, 0, 0, 0);
wgpu::ImageCopyTexture errorImageCopyTexture =
utils::CreateImageCopyTexture(errorTexture, 0, {0, 0, 0});
wgpu::Extent3D extent3D = {0, 0, 0};
{
uint64_t bufferSize = BufferSizeForTextureCopy(4, 4, 1);
wgpu::Buffer source = CreateBuffer(bufferSize, wgpu::BufferUsage::CopySrc);
wgpu::ImageCopyBuffer imageCopyBuffer = utils::CreateImageCopyBuffer(source, 0, 0, 0);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyTextureToBuffer(&errorImageCopyTexture, &imageCopyBuffer, &extent3D);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
{
wgpu::Texture destination = Create2DTexture(16, 16, 1, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopyDst);
wgpu::ImageCopyTexture imageCopyTexture =
utils::CreateImageCopyTexture(destination, 0, {0, 0, 0});
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.CopyTextureToBuffer(&imageCopyTexture, &errorImageCopyBuffer, &extent3D);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Regression tests for a bug in the computation of texture copy buffer size in Dawn.
TEST_F(CopyCommandTest_T2B, TextureCopyBufferSizeLastRowComputation) {
constexpr uint32_t kBytesPerRow = 256;
constexpr uint32_t kWidth = 4;
constexpr uint32_t kHeight = 4;
constexpr std::array<wgpu::TextureFormat, 2> kFormats = {wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureFormat::RG8Unorm};
{
// kBytesPerRow * (kHeight - 1) + kWidth is not large enough to be the valid buffer size in
// this test because the buffer sizes in T2B copies are not in texels but in bytes.
constexpr uint32_t kInvalidBufferSize = kBytesPerRow * (kHeight - 1) + kWidth;
for (wgpu::TextureFormat format : kFormats) {
wgpu::Texture source =
Create2DTexture(kWidth, kHeight, 1, 1, format, wgpu::TextureUsage::CopySrc);
wgpu::Buffer destination = CreateBuffer(kInvalidBufferSize, wgpu::BufferUsage::CopyDst);
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0,
kBytesPerRow, kHeight, {kWidth, kHeight, 1});
}
}
{
for (wgpu::TextureFormat format : kFormats) {
uint32_t validBufferSize = BufferSizeForTextureCopy(kWidth, kHeight, 1, format);
wgpu::Texture source =
Create2DTexture(kWidth, kHeight, 1, 1, format, wgpu::TextureUsage::CopySrc);
// Verify the return value of BufferSizeForTextureCopy() is exactly the minimum valid
// buffer size in this test.
{
uint32_t invalidBufferSize = validBufferSize - 1;
wgpu::Buffer destination =
CreateBuffer(invalidBufferSize, wgpu::BufferUsage::CopyDst);
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0,
kBytesPerRow, kHeight, {kWidth, kHeight, 1});
}
{
wgpu::Buffer destination =
CreateBuffer(validBufferSize, wgpu::BufferUsage::CopyDst);
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
kBytesPerRow, kHeight, {kWidth, kHeight, 1});
}
}
}
}
// Test copy from mip map of non square texture to buffer
TEST_F(CopyCommandTest_T2B, CopyFromMipmapOfNonSquareTexture) {
uint32_t maxMipmapLevel = 3;
wgpu::Texture source = Create2DTexture(4, 2, maxMipmapLevel, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc);
uint64_t bufferSize = BufferSizeForTextureCopy(4, 2, 1);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
// Copy from top level mip map
TestT2BCopy(utils::Expectation::Success, source, maxMipmapLevel - 1, {0, 0, 0}, destination, 0,
256, 1, {1, 1, 1});
// Copy from high level mip map
TestT2BCopy(utils::Expectation::Success, source, maxMipmapLevel - 2, {0, 0, 0}, destination, 0,
256, 1, {2, 1, 1});
// Mip level out of range
TestT2BCopy(utils::Expectation::Failure, source, maxMipmapLevel, {0, 0, 0}, destination, 0, 256,
1, {2, 1, 1});
// Copy origin out of range
TestT2BCopy(utils::Expectation::Failure, source, maxMipmapLevel - 2, {2, 0, 0}, destination, 0,
256, 1, {2, 1, 1});
// Copy size out of range
TestT2BCopy(utils::Expectation::Failure, source, maxMipmapLevel - 2, {1, 0, 0}, destination, 0,
256, 1, {2, 1, 1});
}
// Test copy from only the depth aspect of a texture
TEST_F(CopyCommandTest_T2B, CopyFromDepthAspect) {
uint64_t bufferSize = BufferSizeForTextureCopy(16, 16, 1, wgpu::TextureFormat::Depth32Float);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
constexpr std::array<wgpu::TextureFormat, 3> kAllowDepthCopyFormats = {
wgpu::TextureFormat::Depth16Unorm, wgpu::TextureFormat::Depth32Float,
wgpu::TextureFormat::Depth32FloatStencil8};
for (wgpu::TextureFormat format : kAllowDepthCopyFormats) {
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopySrc);
// Test it is valid to copy the depth aspect of these depth/stencil texture
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 16,
{16, 16, 1}, wgpu::TextureAspect::DepthOnly);
if (utils::IsDepthOnlyFormat(format)) {
// Test "all" of a depth texture which is only the depth aspect.
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256,
16, {16, 16, 1}, wgpu::TextureAspect::All);
}
}
}
constexpr std::array<wgpu::TextureFormat, 3> kDisallowDepthCopyFormats = {
wgpu::TextureFormat::Depth24Plus, wgpu::TextureFormat::Depth24PlusStencil8,
wgpu::TextureFormat::Depth24UnormStencil8};
for (wgpu::TextureFormat format : kDisallowDepthCopyFormats) {
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopySrc);
// Test it is invalid to copy from the depth aspect of these depth/stencil texture
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 16,
{16, 16, 1}, wgpu::TextureAspect::DepthOnly);
}
}
{
wgpu::Texture source = Create2DTexture(16, 16, 1, 1, wgpu::TextureFormat::R32Float,
wgpu::TextureUsage::CopySrc);
// Test it is invalid to copy from the depth aspect of a color texture
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 16,
{16, 16, 1}, wgpu::TextureAspect::DepthOnly);
}
}
// Test copy from only the stencil aspect of a texture
TEST_F(CopyCommandTest_T2B, CopyFromStencilAspect) {
uint64_t bufferSize = BufferSizeForTextureCopy(16, 16, 1, wgpu::TextureFormat::R8Uint);
wgpu::Buffer destination = CreateBuffer(bufferSize, wgpu::BufferUsage::CopyDst);
for (wgpu::TextureFormat format : utils::kStencilFormats) {
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopySrc);
// TODO(dawn:666): Test "all" of Stencil8 format when it's implemented
// Test it is valid to copy from the stencil aspect of a depth/stencil texture
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, 256, 16,
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
// Test it is invalid if the buffer is too small
wgpu::Buffer destinationSmall =
CreateBuffer(bufferSize - 1, wgpu::BufferUsage::CopyDst);
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destinationSmall, 0, 256,
16, {16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
// A copy fails when using a depth/stencil texture, and the entire subresource isn't
// copied
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopySrc);
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 15,
{15, 15, 1}, wgpu::TextureAspect::StencilOnly);
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 1,
{1, 1, 1}, wgpu::TextureAspect::StencilOnly);
}
// Non-zero mip: A copy fails when using a depth/stencil texture, and the entire
// subresource isn't copied
{
wgpu::Texture source =
Create2DTexture(16, 16, 2, 1, format, wgpu::TextureUsage::CopySrc);
// Whole mip is success
TestT2BCopy(utils::Expectation::Success, source, 1, {0, 0, 0}, destination, 0, 256, 8,
{8, 8, 1}, wgpu::TextureAspect::StencilOnly);
// Partial mip fails
TestT2BCopy(utils::Expectation::Failure, source, 1, {0, 0, 0}, destination, 0, 256, 7,
{7, 7, 1}, wgpu::TextureAspect::StencilOnly);
TestT2BCopy(utils::Expectation::Failure, source, 1, {0, 0, 0}, destination, 0, 256, 1,
{1, 1, 1}, wgpu::TextureAspect::StencilOnly);
}
// Non-zero mip, non-pow-2: A copy fails when using a depth/stencil texture, and the
// entire subresource isn't copied
{
wgpu::Texture source =
Create2DTexture(17, 17, 2, 1, format, wgpu::TextureUsage::CopySrc);
// Whole mip is success
TestT2BCopy(utils::Expectation::Success, source, 1, {0, 0, 0}, destination, 0, 256, 8,
{8, 8, 1}, wgpu::TextureAspect::StencilOnly);
// Partial mip fails
TestT2BCopy(utils::Expectation::Failure, source, 1, {0, 0, 0}, destination, 0, 256, 7,
{7, 7, 1}, wgpu::TextureAspect::StencilOnly);
TestT2BCopy(utils::Expectation::Failure, source, 1, {0, 0, 0}, destination, 0, 256, 1,
{1, 1, 1}, wgpu::TextureAspect::StencilOnly);
}
}
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 1, wgpu::TextureFormat::R8Uint, wgpu::TextureUsage::CopySrc);
// Test it is invalid to copy from the stencil aspect of a color texture
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 16,
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
{
wgpu::Texture source = Create2DTexture(16, 16, 1, 1, wgpu::TextureFormat::Depth24Plus,
wgpu::TextureUsage::CopySrc);
// Test it is invalid to copy from the stencil aspect of a depth-only texture
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, 256, 16,
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
}
// Test that CopyT2B throws an error when requiredBytesInCopy overflows uint64_t
TEST_F(CopyCommandTest_T2B, RequiredBytesInCopyOverflow) {
wgpu::Buffer destination = CreateBuffer(10000, wgpu::BufferUsage::CopyDst);
wgpu::Texture source =
Create2DTexture(1, 1, 1, 16, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
// Success
TestT2BCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, (1 << 31),
(1 << 31), {1, 1, 1});
// Failure because bytesPerImage * (depth - 1) overflows
TestT2BCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, (1 << 31),
(1 << 31), {1, 1, 16});
}
class CopyCommandTest_T2T : public CopyCommandTest {
protected:
WGPUDevice CreateTestDevice() override {
wgpu::DeviceDescriptor descriptor;
wgpu::FeatureName requiredFeatures[2] = {wgpu::FeatureName::Depth24UnormStencil8,
wgpu::FeatureName::Depth32FloatStencil8};
descriptor.requiredFeatures = requiredFeatures;
descriptor.requiredFeaturesCount = 2;
return adapter.CreateDevice(&descriptor);
}
};
TEST_F(CopyCommandTest_T2T, Success) {
wgpu::Texture source =
Create2DTexture(16, 16, 5, 4, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 4, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Different copies, including some that touch the OOB condition
{
// Copy a region along top left boundary
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{4, 4, 1});
// Copy entire texture
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1});
// Copy a region along bottom right boundary
TestT2TCopy(utils::Expectation::Success, source, 0, {8, 8, 0}, destination, 0, {8, 8, 0},
{8, 8, 1});
// Copy region into mip
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 2, {0, 0, 0},
{4, 4, 1});
// Copy mip into region
TestT2TCopy(utils::Expectation::Success, source, 2, {0, 0, 0}, destination, 0, {0, 0, 0},
{4, 4, 1});
// Copy between slices
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 1}, destination, 0, {0, 0, 1},
{16, 16, 1});
// Copy multiple slices (srcImageCopyTexture.arrayLayer + copySize.depthOrArrayLayers ==
// srcImageCopyTexture.texture.arrayLayerCount)
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 2}, destination, 0, {0, 0, 0},
{16, 16, 2});
// Copy multiple slices (dstImageCopyTexture.arrayLayer + copySize.depthOrArrayLayers ==
// dstImageCopyTexture.texture.arrayLayerCount)
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 2},
{16, 16, 2});
}
// Empty copies are valid
{
// An empty copy
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{0, 0, 1});
// An empty copy with depth = 0
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{0, 0, 0});
// An empty copy touching the side of the source texture
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {16, 16, 0},
{0, 0, 1});
// An empty copy touching the side of the destination texture
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {16, 16, 0},
{0, 0, 1});
}
}
TEST_F(CopyCommandTest_T2T, IncorrectUsage) {
wgpu::Texture source =
Create2DTexture(16, 16, 5, 2, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 2, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Incorrect source usage causes failure
TestT2TCopy(utils::Expectation::Failure, destination, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1});
// Incorrect destination usage causes failure
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, source, 0, {0, 0, 0},
{16, 16, 1});
}
TEST_F(CopyCommandTest_T2T, OutOfBounds) {
wgpu::Texture source =
Create2DTexture(16, 16, 5, 4, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 4, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// OOB on source
{
// x + width overflows
TestT2TCopy(utils::Expectation::Failure, source, 0, {1, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1});
// y + height overflows
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 1, 0}, destination, 0, {0, 0, 0},
{16, 16, 1});
// non-zero mip overflows
TestT2TCopy(utils::Expectation::Failure, source, 1, {0, 0, 0}, destination, 0, {0, 0, 0},
{9, 9, 1});
// arrayLayer + depth OOB
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 3}, destination, 0, {0, 0, 0},
{16, 16, 2});
// empty copy on non-existent mip fails
TestT2TCopy(utils::Expectation::Failure, source, 6, {0, 0, 0}, destination, 0, {0, 0, 0},
{0, 0, 1});
// empty copy from non-existent slice fails
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 4}, destination, 0, {0, 0, 0},
{0, 0, 1});
}
// OOB on destination
{
// x + width overflows
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {1, 0, 0},
{16, 16, 1});
// y + height overflows
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 1, 0},
{16, 16, 1});
// non-zero mip overflows
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 1, {0, 0, 0},
{9, 9, 1});
// arrayLayer + depth OOB
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 3},
{16, 16, 2});
// empty copy on non-existent mip fails
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 6, {0, 0, 0},
{0, 0, 1});
// empty copy on non-existent slice fails
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 4},
{0, 0, 1});
}
}
TEST_F(CopyCommandTest_T2T, 2DTextureDepthStencil) {
for (wgpu::TextureFormat format : utils::kDepthAndStencilFormats) {
wgpu::Texture source = Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopyDst);
// Success when entire depth stencil subresource is copied
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1});
// Failure when depth stencil subresource is partially copied
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{15, 15, 1});
// Failure when selecting the depth aspect (not all)
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::DepthOnly);
// Failure when selecting the stencil aspect (not all)
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
}
TEST_F(CopyCommandTest_T2T, 2DTextureDepthOnly) {
constexpr std::array<wgpu::TextureFormat, 2> kDepthOnlyFormats = {
wgpu::TextureFormat::Depth24Plus, wgpu::TextureFormat::Depth32Float};
for (wgpu::TextureFormat format : kDepthOnlyFormats) {
wgpu::Texture source = Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopyDst);
// Success when entire subresource is copied
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1});
// Failure when depth subresource is partially copied
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{15, 15, 1});
// Success when selecting the depth aspect (not all)
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::DepthOnly);
// Failure when selecting the stencil aspect (not all)
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{16, 16, 1}, wgpu::TextureAspect::StencilOnly);
}
}
TEST_F(CopyCommandTest_T2T, 2DTextureArrayDepthStencil) {
for (wgpu::TextureFormat format : utils::kDepthAndStencilFormats) {
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 3, format, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopyDst);
// Success when entire depth stencil subresource (layer) is the copy source
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 1}, destination, 0,
{0, 0, 0}, {16, 16, 1});
}
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 1, format, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 3, format, wgpu::TextureUsage::CopyDst);
// Success when entire depth stencil subresource (layer) is the copy destination
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 0}, destination, 0,
{0, 0, 1}, {16, 16, 1});
}
{
wgpu::Texture source =
Create2DTexture(16, 16, 1, 3, format, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 1, 3, format, wgpu::TextureUsage::CopyDst);
// Success when src and dst are an entire depth stencil subresource (layer)
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 2}, destination, 0,
{0, 0, 1}, {16, 16, 1});
// Success when src and dst are an array of entire depth stencil subresources
TestT2TCopy(utils::Expectation::Success, source, 0, {0, 0, 1}, destination, 0,
{0, 0, 0}, {16, 16, 2});
}
}
}
TEST_F(CopyCommandTest_T2T, FormatsMismatch) {
wgpu::Texture source =
Create2DTexture(16, 16, 5, 2, wgpu::TextureFormat::RGBA8Uint, wgpu::TextureUsage::CopySrc);
wgpu::Texture destination =
Create2DTexture(16, 16, 5, 2, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Failure when formats don't match
TestT2TCopy(utils::Expectation::Failure, source, 0, {0, 0, 0}, destination, 0, {0, 0, 0},
{0, 0, 1});
}
TEST_F(CopyCommandTest_T2T, MultisampledCopies) {
wgpu::Texture sourceMultiSampled1x = Create2DTexture(
16, 16, 1, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc, 1);
wgpu::Texture sourceMultiSampled4x = Create2DTexture(
16, 16, 1, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopySrc, 4);
wgpu::Texture destinationMultiSampled4x = Create2DTexture(
16, 16, 1, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst, 4);
// Success when entire multisampled subresource is copied
{
TestT2TCopy(utils::Expectation::Success, sourceMultiSampled4x, 0, {0, 0, 0},
destinationMultiSampled4x, 0, {0, 0, 0}, {16, 16, 1});
}
// Failures
{
// An empty copy with mismatched samples fails
TestT2TCopy(utils::Expectation::Failure, sourceMultiSampled1x, 0, {0, 0, 0},
destinationMultiSampled4x, 0, {0, 0, 0}, {0, 0, 1});
// A copy fails when samples are greater than 1, and entire subresource isn't copied
TestT2TCopy(utils::Expectation::Failure, sourceMultiSampled4x, 0, {0, 0, 0},
destinationMultiSampled4x, 0, {0, 0, 0}, {15, 15, 1});
}
}
// Test copy to mip map of non square textures
TEST_F(CopyCommandTest_T2T, CopyToMipmapOfNonSquareTexture) {
uint32_t maxMipmapLevel = 3;
wgpu::Texture source = Create2DTexture(4, 2, maxMipmapLevel, 1, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc);
wgpu::Texture destination = Create2DTexture(
4, 2, maxMipmapLevel, 1, wgpu::TextureFormat::RGBA8Unorm, wgpu::TextureUsage::CopyDst);
// Copy to top level mip map
TestT2TCopy(utils::Expectation::Success, source, maxMipmapLevel - 1, {0, 0, 0}, destination,
maxMipmapLevel - 1, {0, 0, 0}, {1, 1, 1});
// Copy to high level mip map
TestT2TCopy(utils::Expectation::Success, source, maxMipmapLevel - 2, {0, 0, 0}, destination,
maxMipmapLevel - 2, {0, 0, 0}, {2, 1, 1});
// Mip level out of range
TestT2TCopy(utils::Expectation::Failure, source, maxMipmapLevel, {0, 0, 0}, destination,
maxMipmapLevel, {0, 0, 0}, {2, 1, 1});
// Copy origin out of range
TestT2TCopy(utils::Expectation::Failure, source, maxMipmapLevel - 2, {2, 0, 0}, destination,
maxMipmapLevel - 2, {2, 0, 0}, {2, 1, 1});
// Copy size out of range
TestT2TCopy(utils::Expectation::Failure, source, maxMipmapLevel - 2, {1, 0, 0}, destination,
maxMipmapLevel - 2, {0, 0, 0}, {2, 1, 1});
}
// Test copy within the same texture
TEST_F(CopyCommandTest_T2T, CopyWithinSameTexture) {
wgpu::Texture texture =
Create2DTexture(32, 32, 2, 4, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc | wgpu::TextureUsage::CopyDst);
// The base array layer of the copy source being equal to that of the copy destination is not
// allowed.
{
constexpr uint32_t kBaseArrayLayer = 0;
// copyExtent.z == 1
{
constexpr uint32_t kCopyArrayLayerCount = 1;
TestT2TCopy(utils::Expectation::Failure, texture, 0, {0, 0, kBaseArrayLayer}, texture,
0, {2, 2, kBaseArrayLayer}, {1, 1, kCopyArrayLayerCount});
}
// copyExtent.z > 1
{
constexpr uint32_t kCopyArrayLayerCount = 2;
TestT2TCopy(utils::Expectation::Failure, texture, 0, {0, 0, kBaseArrayLayer}, texture,
0, {2, 2, kBaseArrayLayer}, {1, 1, kCopyArrayLayerCount});
}
}
// The array slices of the source involved in the copy have no overlap with those of the
// destination is allowed.
{
constexpr uint32_t kCopyArrayLayerCount = 2;
// srcBaseArrayLayer < dstBaseArrayLayer
{
constexpr uint32_t kSrcBaseArrayLayer = 0;
constexpr uint32_t kDstBaseArrayLayer = kSrcBaseArrayLayer + kCopyArrayLayerCount;
TestT2TCopy(utils::Expectation::Success, texture, 0, {0, 0, kSrcBaseArrayLayer},
texture, 0, {0, 0, kDstBaseArrayLayer}, {1, 1, kCopyArrayLayerCount});
}
// srcBaseArrayLayer > dstBaseArrayLayer
{
constexpr uint32_t kSrcBaseArrayLayer = 2;
constexpr uint32_t kDstBaseArrayLayer = kSrcBaseArrayLayer - kCopyArrayLayerCount;
TestT2TCopy(utils::Expectation::Success, texture, 0, {0, 0, kSrcBaseArrayLayer},
texture, 0, {0, 0, kDstBaseArrayLayer}, {1, 1, kCopyArrayLayerCount});
}
}
// Copy between different mipmap levels is allowed.
{
constexpr uint32_t kSrcMipLevel = 0;
constexpr uint32_t kDstMipLevel = 1;
// Copy one slice
{
constexpr uint32_t kCopyArrayLayerCount = 1;
TestT2TCopy(utils::Expectation::Success, texture, kSrcMipLevel, {0, 0, 0}, texture,
kDstMipLevel, {1, 1, 0}, {1, 1, kCopyArrayLayerCount});
}
// The base array layer of the copy source is equal to that of the copy destination.
{
constexpr uint32_t kCopyArrayLayerCount = 2;
constexpr uint32_t kBaseArrayLayer = 0;
TestT2TCopy(utils::Expectation::Success, texture, kSrcMipLevel, {0, 0, kBaseArrayLayer},
texture, kDstMipLevel, {1, 1, kBaseArrayLayer},
{1, 1, kCopyArrayLayerCount});
}
// The array slices of the source involved in the copy have overlaps with those of the
// destination, and the copy areas have overlaps.
{
constexpr uint32_t kCopyArrayLayerCount = 2;
constexpr uint32_t kSrcBaseArrayLayer = 0;
constexpr uint32_t kDstBaseArrayLayer = 1;
ASSERT(kSrcBaseArrayLayer + kCopyArrayLayerCount > kDstBaseArrayLayer);
constexpr wgpu::Extent3D kCopyExtent = {1, 1, kCopyArrayLayerCount};
TestT2TCopy(utils::Expectation::Success, texture, kSrcMipLevel,
{0, 0, kSrcBaseArrayLayer}, texture, kDstMipLevel,
{0, 0, kDstBaseArrayLayer}, kCopyExtent);
}
}
// The array slices of the source involved in the copy have overlaps with those of the
// destination is not allowed.
{
constexpr uint32_t kMipmapLevel = 0;
constexpr uint32_t kMinBaseArrayLayer = 0;
constexpr uint32_t kMaxBaseArrayLayer = 1;
constexpr uint32_t kCopyArrayLayerCount = 3;
ASSERT(kMinBaseArrayLayer + kCopyArrayLayerCount > kMaxBaseArrayLayer);
constexpr wgpu::Extent3D kCopyExtent = {4, 4, kCopyArrayLayerCount};
const wgpu::Origin3D srcOrigin = {0, 0, kMinBaseArrayLayer};
const wgpu::Origin3D dstOrigin = {4, 4, kMaxBaseArrayLayer};
TestT2TCopy(utils::Expectation::Failure, texture, kMipmapLevel, srcOrigin, texture,
kMipmapLevel, dstOrigin, kCopyExtent);
}
// Copy between different mipmap levels and array slices is allowed.
TestT2TCopy(utils::Expectation::Success, texture, 0, {0, 0, 1}, texture, 1, {1, 1, 0},
{1, 1, 1});
// Copy between 3D texture of both overlapping depth ranges is not allowed.
{
wgpu::Texture texture3D =
Create3DTexture(32, 32, 4, 2, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc | wgpu::TextureUsage::CopyDst);
constexpr uint32_t kMipmapLevel = 0;
constexpr wgpu::Origin3D kSrcOrigin = {0, 0, 0};
constexpr wgpu::Origin3D kDstOrigin = {0, 0, 1};
constexpr wgpu::Extent3D kCopyExtent = {4, 4, 2};
TestT2TCopy(utils::Expectation::Failure, texture3D, kMipmapLevel, kSrcOrigin, texture3D,
kMipmapLevel, kDstOrigin, kCopyExtent);
}
// Copy between 3D texture of both non-overlapping depth ranges is not allowed.
{
wgpu::Texture texture3D =
Create3DTexture(32, 32, 4, 2, wgpu::TextureFormat::RGBA8Unorm,
wgpu::TextureUsage::CopySrc | wgpu::TextureUsage::CopyDst);
constexpr uint32_t kMipmapLevel = 0;
constexpr wgpu::Origin3D kSrcOrigin = {0, 0, 0};
constexpr wgpu::Origin3D kDstOrigin = {0, 0, 2};
constexpr wgpu::Extent3D kCopyExtent = {4, 4, 1};
TestT2TCopy(utils::Expectation::Failure, texture3D, kMipmapLevel, kSrcOrigin, texture3D,
kMipmapLevel, kDstOrigin, kCopyExtent);
}
}
class CopyCommandTest_CompressedTextureFormats : public CopyCommandTest {
protected:
WGPUDevice CreateTestDevice() override {
wgpu::DeviceDescriptor descriptor;
wgpu::FeatureName requiredFeatures[3] = {wgpu::FeatureName::TextureCompressionBC,
wgpu::FeatureName::TextureCompressionETC2,
wgpu::FeatureName::TextureCompressionASTC};
descriptor.requiredFeatures = requiredFeatures;
descriptor.requiredFeaturesCount = 3;
return adapter.CreateDevice(&descriptor);
}
wgpu::Texture Create2DTexture(wgpu::TextureFormat format,
uint32_t mipmapLevels,
uint32_t width,
uint32_t height) {
constexpr wgpu::TextureUsage kUsage = wgpu::TextureUsage::CopyDst |
wgpu::TextureUsage::CopySrc |
wgpu::TextureUsage::TextureBinding;
constexpr uint32_t kArrayLayers = 1;
return CopyCommandTest::Create2DTexture(width, height, mipmapLevels, kArrayLayers, format,
kUsage, 1);
}
// By default, we use a 4x4 tiling of the format block size.
wgpu::Texture Create2DTexture(wgpu::TextureFormat format) {
uint32_t width = utils::GetTextureFormatBlockWidth(format) * 4;
uint32_t height = utils::GetTextureFormatBlockHeight(format) * 4;
return Create2DTexture(format, 1, width, height);
}
};
// Tests to verify that bufferOffset must be a multiple of the compressed texture blocks in bytes
// in buffer-to-texture or texture-to-buffer copies with compressed texture formats.
TEST_F(CopyCommandTest_CompressedTextureFormats, BufferOffset) {
wgpu::Buffer buffer =
CreateBuffer(512, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
for (wgpu::TextureFormat format : utils::kCompressedFormats) {
wgpu::Texture texture = Create2DTexture(format);
uint32_t blockWidth = utils::GetTextureFormatBlockWidth(format);
uint32_t blockHeight = utils::GetTextureFormatBlockHeight(format);
// Valid usages of BufferOffset in B2T and T2B copies with compressed texture formats.
{
uint32_t validBufferOffset = utils::GetTexelBlockSizeInBytes(format);
TestBothTBCopies(utils::Expectation::Success, buffer, validBufferOffset, 256, 4,
texture, 0, {0, 0, 0}, {blockWidth, blockHeight, 1});
}
// Failures on invalid bufferOffset.
{
uint32_t kInvalidBufferOffset = utils::GetTexelBlockSizeInBytes(format) / 2;
TestBothTBCopies(utils::Expectation::Failure, buffer, kInvalidBufferOffset, 256, 4,
texture, 0, {0, 0, 0}, {blockWidth, blockHeight, 1});
}
}
}
// Tests to verify that bytesPerRow must not be less than (width / blockWidth) * blockSizeInBytes.
// Note that in Dawn we require bytesPerRow be a multiple of 256, which ensures bytesPerRow will
// always be the multiple of compressed texture block width in bytes.
TEST_F(CopyCommandTest_CompressedTextureFormats, BytesPerRow) {
wgpu::Buffer buffer =
CreateBuffer(1024, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
// Used to compute test width and height. We choose 320 because it isn't divisible by 256 and
// hence will need to be aligned.
constexpr uint32_t kInvalidBytesPerRow = 320;
for (wgpu::TextureFormat format : utils::kCompressedFormats) {
// Compute the test width and height such that the smallest BytesPerRow is always equal to
// 320. We choose 320 because it isn't divisible by 256 and hence needs to be aligned.
uint32_t blockWidth = utils::GetTextureFormatBlockWidth(format);
uint32_t blockHeight = utils::GetTextureFormatBlockHeight(format);
uint32_t blockByteSize = utils::GetTexelBlockSizeInBytes(format);
uint32_t testWidth = kInvalidBytesPerRow * blockWidth / blockByteSize;
uint32_t testHeight = kInvalidBytesPerRow * blockHeight / blockByteSize;
wgpu::Texture texture = Create2DTexture(format, 1, testWidth, testHeight);
// Failures on the BytesPerRow that is not large enough.
{
constexpr uint32_t kSmallBytesPerRow = 256;
TestBothTBCopies(utils::Expectation::Failure, buffer, 0, kSmallBytesPerRow, 4, texture,
0, {0, 0, 0}, {testWidth, blockHeight, 1});
}
// Test it is not valid to use a BytesPerRow that is not a multiple of 256.
{
TestBothTBCopies(utils::Expectation::Failure, buffer, 0, kInvalidBytesPerRow, 4,
texture, 0, {0, 0, 0}, {testWidth, blockHeight, 1});
}
// Test the smallest valid BytesPerRow should work.
{
uint32_t smallestValidBytesPerRow = Align(kInvalidBytesPerRow, 256);
TestBothTBCopies(utils::Expectation::Success, buffer, 0, smallestValidBytesPerRow, 4,
texture, 0, {0, 0, 0}, {testWidth, blockHeight, 1});
}
}
}
// rowsPerImage must be >= heightInBlocks.
TEST_F(CopyCommandTest_CompressedTextureFormats, RowsPerImage) {
wgpu::Buffer buffer =
CreateBuffer(1024, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
for (wgpu::TextureFormat format : utils::kCompressedFormats) {
wgpu::Texture texture = Create2DTexture(format);
uint32_t blockWidth = utils::GetTextureFormatBlockWidth(format);
uint32_t blockHeight = utils::GetTextureFormatBlockHeight(format);
// Valid usages of rowsPerImage in B2T and T2B copies with compressed texture formats.
{
constexpr uint32_t kValidRowsPerImage = 5;
TestBothTBCopies(utils::Expectation::Success, buffer, 0, 256, kValidRowsPerImage,
texture, 0, {0, 0, 0}, {blockWidth, blockHeight * 4, 1});
}
{
constexpr uint32_t kValidRowsPerImage = 4;
TestBothTBCopies(utils::Expectation::Success, buffer, 0, 256, kValidRowsPerImage,
texture, 0, {0, 0, 0}, {blockWidth, blockHeight * 4, 1});
}
// rowsPerImage is smaller than height.
{
constexpr uint32_t kInvalidRowsPerImage = 3;
TestBothTBCopies(utils::Expectation::Failure, buffer, 0, 256, kInvalidRowsPerImage,
texture, 0, {0, 0, 0}, {blockWidth, blockHeight * 5, 1});
}
}
}
// Tests to verify that ImageOffset.x must be a multiple of the compressed texture block width and
// ImageOffset.y must be a multiple of the compressed texture block height in buffer-to-texture,
// texture-to-buffer or texture-to-texture copies with compressed texture formats.
TEST_F(CopyCommandTest_CompressedTextureFormats, ImageOffset) {
wgpu::Buffer buffer =
CreateBuffer(512, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
for (wgpu::TextureFormat format : utils::kCompressedFormats) {
wgpu::Texture texture = Create2DTexture(format);
wgpu::Texture texture2 = Create2DTexture(format);
uint32_t blockWidth = utils::GetTextureFormatBlockWidth(format);
uint32_t blockHeight = utils::GetTextureFormatBlockHeight(format);
wgpu::Origin3D smallestValidOrigin3D = {blockWidth, blockHeight, 0};
// Valid usages of ImageOffset in B2T, T2B and T2T copies with compressed texture formats.
{
TestBothTBCopies(utils::Expectation::Success, buffer, 0, 256, 4, texture, 0,
smallestValidOrigin3D, {blockWidth, blockHeight, 1});
TestBothT2TCopies(utils::Expectation::Success, texture, 0, {0, 0, 0}, texture2, 0,
smallestValidOrigin3D, {blockWidth, blockHeight, 1});
}
// Failures on invalid ImageOffset.x.
{
wgpu::Origin3D invalidOrigin3D = {smallestValidOrigin3D.x - 1, smallestValidOrigin3D.y,
0};
TestBothTBCopies(utils::Expectation::Failure, buffer, 0, 256, 4, texture, 0,
invalidOrigin3D, {blockWidth, blockHeight, 1});
TestBothT2TCopies(utils::Expectation::Failure, texture, 0, invalidOrigin3D, texture2, 0,
{0, 0, 0}, {blockWidth, blockHeight, 1});
}
// Failures on invalid ImageOffset.y.
{
wgpu::Origin3D invalidOrigin3D = {smallestValidOrigin3D.x, smallestValidOrigin3D.y - 1,
0};
TestBothTBCopies(utils::Expectation::Failure, buffer, 0, 256, 4, texture, 0,
invalidOrigin3D, {blockWidth, blockHeight, 1});
TestBothT2TCopies(utils::Expectation::Failure, texture, 0, invalidOrigin3D, texture2, 0,
{0, 0, 0}, {blockWidth, blockHeight, 1});
}
}
}
// Tests to verify that ImageExtent.x must be a multiple of the compressed texture block width and
// ImageExtent.y must be a multiple of the compressed texture block height in buffer-to-texture,
// texture-to-buffer or texture-to-texture copies with compressed texture formats.
TEST_F(CopyCommandTest_CompressedTextureFormats, ImageExtent) {
wgpu::Buffer buffer =
CreateBuffer(1024, wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst);
constexpr uint32_t kMipmapLevels = 3;
// We choose a prime that is greater than the current max texel dimension size as a multiplier
// to compute the test texture size so that we can be certain that its level 2 mipmap (x4)
// cannot be a multiple of the dimension. This is useful for testing padding at the edges of
// the mipmaps.
constexpr uint32_t kBlockPerDim = 13;
for (wgpu::TextureFormat format : utils::kCompressedFormats) {
uint32_t blockWidth = utils::GetTextureFormatBlockWidth(format);
uint32_t blockHeight = utils::GetTextureFormatBlockHeight(format);
uint32_t testWidth = blockWidth * kBlockPerDim;
uint32_t testHeight = blockHeight * kBlockPerDim;
wgpu::Texture texture = Create2DTexture(format, kMipmapLevels, testWidth, testHeight);
wgpu::Texture texture2 = Create2DTexture(format, kMipmapLevels, testWidth, testHeight);
wgpu::Extent3D smallestValidExtent3D = {blockWidth, blockHeight, 1};
// Valid usages of ImageExtent in B2T, T2B and T2T copies with compressed texture formats.
{
TestBothTBCopies(utils::Expectation::Success, buffer, 0, 256, 4, texture, 0, {0, 0, 0},
smallestValidExtent3D);
TestBothT2TCopies(utils::Expectation::Success, texture, 0, {0, 0, 0}, texture2, 0,
{0, 0, 0}, smallestValidExtent3D);
}
// Valid usages of ImageExtent in B2T, T2B and T2T copies with compressed texture formats
// and non-zero mipmap levels.
{
constexpr uint32_t kTestMipmapLevel = 2;
wgpu::Origin3D testOrigin = {
((testWidth >> kTestMipmapLevel) / blockWidth) * blockWidth,
((testHeight >> kTestMipmapLevel) / blockHeight) * blockHeight, 0};
TestBothTBCopies(utils::Expectation::Success, buffer, 0, 256, 4, texture,
kTestMipmapLevel, testOrigin, smallestValidExtent3D);
TestBothT2TCopies(utils::Expectation::Success, texture, kTestMipmapLevel, testOrigin,
texture2, 0, {0, 0, 0}, smallestValidExtent3D);
}
// Failures on invalid ImageExtent.x.
{
wgpu::Extent3D inValidExtent3D = {smallestValidExtent3D.width - 1,
smallestValidExtent3D.height, 1};
TestBothTBCopies(utils::Expectation::Failure, buffer, 0, 256, 4, texture, 0, {0, 0, 0},
inValidExtent3D);
TestBothT2TCopies(utils::Expectation::Failure, texture, 0, {0, 0, 0}, texture2, 0,
{0, 0, 0}, inValidExtent3D);
}
// Failures on invalid ImageExtent.y.
{
wgpu::Extent3D inValidExtent3D = {smallestValidExtent3D.width,
smallestValidExtent3D.height - 1, 1};
TestBothTBCopies(utils::Expectation::Failure, buffer, 0, 256, 4, texture, 0, {0, 0, 0},
inValidExtent3D);
TestBothT2TCopies(utils::Expectation::Failure, texture, 0, {0, 0, 0}, texture2, 0,
{0, 0, 0}, inValidExtent3D);
}
}
}
// Test copies between buffer and multiple array layers of a compressed texture
TEST_F(CopyCommandTest_CompressedTextureFormats, CopyToMultipleArrayLayers) {
constexpr uint32_t kWidthMultiplier = 3;
constexpr uint32_t kHeightMultiplier = 4;
for (wgpu::TextureFormat format : utils::kCompressedFormats) {
uint32_t blockWidth = utils::GetTextureFormatBlockWidth(format);
uint32_t blockHeight = utils::GetTextureFormatBlockHeight(format);
uint32_t testWidth = kWidthMultiplier * blockWidth;
uint32_t testHeight = kHeightMultiplier * blockHeight;
wgpu::Texture texture = CopyCommandTest::Create2DTexture(
testWidth, testHeight, 1, 20, format,
wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::CopySrc);
// Copy to all array layers
TestBothTBCopiesExactBufferSize(256, 4, texture, format, {0, 0, 0},
{testWidth, testHeight, 20});
// Copy to the highest array layer
TestBothTBCopiesExactBufferSize(256, 4, texture, format, {0, 0, 19},
{testWidth, testHeight, 1});
// Copy to array layers in the middle
TestBothTBCopiesExactBufferSize(256, 4, texture, format, {0, 0, 1},
{testWidth, testHeight, 18});
// Copy touching the texture corners with a non-packed rowsPerImage
TestBothTBCopiesExactBufferSize(256, 6, texture, format, {blockWidth, blockHeight, 4},
{testWidth - blockWidth, testHeight - blockHeight, 16});
}
}
class CopyCommandTest_ClearBuffer : public CopyCommandTest {};
TEST_F(CopyCommandTest_ClearBuffer, Success) {
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
// Clear different ranges, including some that touch the OOB condition
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination, 0, 16);
encoder.ClearBuffer(destination, 0, 8);
encoder.ClearBuffer(destination, 8, 8);
encoder.Finish();
}
// Size is allowed to be omitted
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination, 0);
encoder.ClearBuffer(destination, 8);
encoder.Finish();
}
// Size and Offset are allowed to be omitted
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination);
encoder.Finish();
}
}
// Test a successful ClearBuffer where the last external reference is dropped.
TEST_F(CopyCommandTest_ClearBuffer, DroppedBuffer) {
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination, 0, 8);
wgpu::CommandBuffer commandBuffer = encoder.Finish();
destination = nullptr;
device.GetQueue().Submit(1, &commandBuffer);
}
// Test ClearBuffer copies with OOB
TEST_F(CopyCommandTest_ClearBuffer, OutOfBounds) {
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination, 8, 12);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
{
// Despite being zero length, should still raise an error due to being out of bounds.
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination, 20, 0);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Test ClearBuffer with incorrect buffer usage
TEST_F(CopyCommandTest_ClearBuffer, BadUsage) {
wgpu::Buffer vertex = CreateBuffer(16, wgpu::BufferUsage::Vertex);
// Destination with incorrect usage
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(vertex, 0, 16);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Test ClearBuffer with unaligned data size
TEST_F(CopyCommandTest_ClearBuffer, UnalignedSize) {
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination, 0, 2);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Test ClearBuffer with unaligned offset
TEST_F(CopyCommandTest_ClearBuffer, UnalignedOffset) {
wgpu::Buffer destination = CreateBuffer(16, wgpu::BufferUsage::CopyDst);
// Unaligned destination offset
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(destination, 2, 4);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Test ClearBuffer with buffers in error state cause errors.
TEST_F(CopyCommandTest_ClearBuffer, BuffersInErrorState) {
wgpu::BufferDescriptor errorBufferDescriptor;
errorBufferDescriptor.size = 4;
errorBufferDescriptor.usage =
wgpu::BufferUsage::MapRead | wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst;
ASSERT_DEVICE_ERROR(wgpu::Buffer errorBuffer = device.CreateBuffer(&errorBufferDescriptor));
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.ClearBuffer(errorBuffer, 0, 4);
ASSERT_DEVICE_ERROR(encoder.Finish());
}