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// Copyright 2020 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "utils/TestUtils.h"
#include "common/Assert.h"
#include "common/Constants.h"
#include "common/Math.h"
#include "utils/TextureFormatUtils.h"
#include "utils/WGPUHelpers.h"
#include <vector>
namespace utils {
uint32_t GetMinimumBytesPerRow(wgpu::TextureFormat format, uint32_t width) {
const uint32_t bytesPerBlock = utils::GetTexelBlockSizeInBytes(format);
return Align(bytesPerBlock * width, kTextureBytesPerRowAlignment);
}
TextureDataCopyLayout GetTextureDataCopyLayoutForTexture2DAtLevel(
wgpu::TextureFormat format,
wgpu::Extent3D textureSizeAtLevel0,
uint32_t mipmapLevel,
uint32_t rowsPerImage) {
// TODO(jiawei.shao@intel.com): support compressed texture formats
ASSERT(utils::GetTextureFormatBlockWidth(format) == 1);
TextureDataCopyLayout layout;
layout.mipSize = {std::max(textureSizeAtLevel0.width >> mipmapLevel, 1u),
std::max(textureSizeAtLevel0.height >> mipmapLevel, 1u),
textureSizeAtLevel0.depthOrArrayLayers};
layout.bytesPerRow = GetMinimumBytesPerRow(format, layout.mipSize.width);
if (rowsPerImage == wgpu::kCopyStrideUndefined) {
rowsPerImage = layout.mipSize.height;
}
layout.rowsPerImage = rowsPerImage;
layout.bytesPerImage = layout.bytesPerRow * rowsPerImage;
// TODO(kainino@chromium.org): Remove this intermediate variable.
// It is currently needed because of an issue in the D3D12 copy splitter
// (or maybe in D3D12 itself?) which requires there to be enough room in the
// buffer for the last image to have a height of `rowsPerImage` instead of
// the actual height.
wgpu::Extent3D mipSizeWithHeightWorkaround = layout.mipSize;
mipSizeWithHeightWorkaround.height =
rowsPerImage * utils::GetTextureFormatBlockHeight(format);
layout.byteLength = RequiredBytesInCopy(layout.bytesPerRow, rowsPerImage,
mipSizeWithHeightWorkaround, format);
const uint32_t bytesPerTexel = utils::GetTexelBlockSizeInBytes(format);
layout.texelBlocksPerRow = layout.bytesPerRow / bytesPerTexel;
layout.texelBlocksPerImage = layout.bytesPerImage / bytesPerTexel;
layout.texelBlockCount = layout.byteLength / bytesPerTexel;
return layout;
}
uint64_t RequiredBytesInCopy(uint64_t bytesPerRow,
uint64_t rowsPerImage,
wgpu::Extent3D copyExtent,
wgpu::TextureFormat textureFormat) {
uint32_t blockSize = utils::GetTexelBlockSizeInBytes(textureFormat);
uint32_t blockWidth = utils::GetTextureFormatBlockWidth(textureFormat);
uint32_t blockHeight = utils::GetTextureFormatBlockHeight(textureFormat);
ASSERT(copyExtent.width % blockWidth == 0);
uint32_t widthInBlocks = copyExtent.width / blockWidth;
ASSERT(copyExtent.height % blockHeight == 0);
uint32_t heightInBlocks = copyExtent.height / blockHeight;
return RequiredBytesInCopy(bytesPerRow, rowsPerImage, widthInBlocks, heightInBlocks,
copyExtent.depthOrArrayLayers, blockSize);
}
uint64_t RequiredBytesInCopy(uint64_t bytesPerRow,
uint64_t rowsPerImage,
uint64_t widthInBlocks,
uint64_t heightInBlocks,
uint64_t depth,
uint64_t bytesPerBlock) {
if (depth == 0) {
return 0;
}
uint64_t bytesPerImage = bytesPerRow * rowsPerImage;
uint64_t requiredBytesInCopy = bytesPerImage * (depth - 1);
if (heightInBlocks != 0) {
uint64_t lastRowBytes = widthInBlocks * bytesPerBlock;
uint64_t lastImageBytes = bytesPerRow * (heightInBlocks - 1) + lastRowBytes;
requiredBytesInCopy += lastImageBytes;
}
return requiredBytesInCopy;
}
uint64_t GetTexelCountInCopyRegion(uint64_t bytesPerRow,
uint64_t rowsPerImage,
wgpu::Extent3D copyExtent,
wgpu::TextureFormat textureFormat) {
return RequiredBytesInCopy(bytesPerRow, rowsPerImage, copyExtent, textureFormat) /
utils::GetTexelBlockSizeInBytes(textureFormat);
}
void UnalignDynamicUploader(wgpu::Device device) {
std::vector<uint8_t> data = {1};
wgpu::TextureDescriptor descriptor = {};
descriptor.size = {1, 1, 1};
descriptor.format = wgpu::TextureFormat::R8Unorm;
descriptor.usage = wgpu::TextureUsage::CopyDst | wgpu::TextureUsage::CopySrc;
wgpu::Texture texture = device.CreateTexture(&descriptor);
wgpu::ImageCopyTexture imageCopyTexture =
utils::CreateImageCopyTexture(texture, 0, {0, 0, 0});
wgpu::TextureDataLayout textureDataLayout =
utils::CreateTextureDataLayout(0, wgpu::kCopyStrideUndefined);
wgpu::Extent3D copyExtent = {1, 1, 1};
// WriteTexture with exactly 1 byte of data.
device.GetQueue().WriteTexture(&imageCopyTexture, data.data(), 1, &textureDataLayout,
&copyExtent);
}
} // namespace utils