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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.
#ifndef UTILS_TESTHELPERS_H_
#define UTILS_TESTHELPERS_H_
#include <dawn/webgpu_cpp.h>
namespace utils {
struct TextureDataCopyLayout {
uint64_t byteLength;
uint64_t texelBlockCount;
uint32_t bytesPerRow;
uint32_t rowsPerImage;
uint32_t texelBlocksPerRow;
uint32_t bytesPerImage;
uint32_t texelBlocksPerImage;
wgpu::Extent3D mipSize;
};
uint32_t GetMinimumBytesPerRow(wgpu::TextureFormat format, uint32_t width);
TextureDataCopyLayout GetTextureDataCopyLayoutForTexture2DAtLevel(
wgpu::TextureFormat format,
wgpu::Extent3D textureSizeAtLevel0,
uint32_t mipmapLevel,
uint32_t rowsPerImage = wgpu::kCopyStrideUndefined);
uint64_t RequiredBytesInCopy(uint64_t bytesPerRow,
uint64_t rowsPerImage,
wgpu::Extent3D copyExtent,
wgpu::TextureFormat textureFormat);
uint64_t RequiredBytesInCopy(uint64_t bytesPerRow,
uint64_t rowsPerImage,
uint64_t widthInBlocks,
uint64_t heightInBlocks,
uint64_t depth,
uint64_t bytesPerBlock);
uint64_t GetTexelCountInCopyRegion(uint64_t bytesPerRow,
uint64_t rowsPerImage,
wgpu::Extent3D copyExtent,
wgpu::TextureFormat textureFormat);
// A helper function used for testing DynamicUploader offset alignment.
// A call of this function will do a Queue::WriteTexture with 1 byte of data,
// so that assuming that WriteTexture uses DynamicUploader, the first RingBuffer
// in it will contain 1 byte of data.
void UnalignDynamicUploader(wgpu::Device device);
} // namespace utils
#endif // UTILS_TESTHELPERS_H_