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// Copyright 2019 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 "dawn_native/CommandValidation.h"
#include "common/BitSetIterator.h"
#include "dawn_native/BindGroup.h"
#include "dawn_native/Buffer.h"
#include "dawn_native/CommandBufferStateTracker.h"
#include "dawn_native/Commands.h"
#include "dawn_native/Device.h"
#include "dawn_native/PassResourceUsage.h"
#include "dawn_native/QuerySet.h"
#include "dawn_native/RenderBundle.h"
#include "dawn_native/RenderPipeline.h"
#include "dawn_native/ValidationUtils_autogen.h"
namespace dawn_native {
// Performs validation of the "synchronization scope" rules of WebGPU.
MaybeError ValidateSyncScopeResourceUsage(const SyncScopeResourceUsage& scope) {
// Buffers can only be used as single-write or multiple read.
for (wgpu::BufferUsage usage : scope.bufferUsages) {
bool readOnly = IsSubset(usage, kReadOnlyBufferUsages);
bool singleUse = wgpu::HasZeroOrOneBits(usage);
if (!readOnly && !singleUse) {
return DAWN_VALIDATION_ERROR(
"Buffer used as writable usage and another usage in the same synchronization "
"scope");
}
}
// Check that every single subresource is used as either a single-write usage or a
// combination of readonly usages.
for (const TextureSubresourceUsage& textureUsage : scope.textureUsages) {
MaybeError error = {};
textureUsage.Iterate([&](const SubresourceRange&, const wgpu::TextureUsage& usage) {
bool readOnly = IsSubset(usage, kReadOnlyTextureUsages);
bool singleUse = wgpu::HasZeroOrOneBits(usage);
if (!readOnly && !singleUse && !error.IsError()) {
error = DAWN_VALIDATION_ERROR(
"Texture used as writable usage and another usage in the same "
"synchronization scope");
}
});
DAWN_TRY(std::move(error));
}
return {};
}
MaybeError ValidateTimestampQuery(QuerySetBase* querySet, uint32_t queryIndex) {
if (querySet->GetQueryType() != wgpu::QueryType::Timestamp) {
return DAWN_VALIDATION_ERROR("The type of query set must be Timestamp");
}
if (queryIndex >= querySet->GetQueryCount()) {
return DAWN_VALIDATION_ERROR("Query index exceeds the number of queries in query set");
}
return {};
}
MaybeError ValidateWriteBuffer(const DeviceBase* device,
const BufferBase* buffer,
uint64_t bufferOffset,
uint64_t size) {
DAWN_TRY(device->ValidateObject(buffer));
if (bufferOffset % 4 != 0) {
return DAWN_VALIDATION_ERROR("WriteBuffer bufferOffset must be a multiple of 4");
}
if (size % 4 != 0) {
return DAWN_VALIDATION_ERROR("WriteBuffer size must be a multiple of 4");
}
uint64_t bufferSize = buffer->GetSize();
if (bufferOffset > bufferSize || size > (bufferSize - bufferOffset)) {
return DAWN_VALIDATION_ERROR("WriteBuffer out of range");
}
if (!(buffer->GetUsage() & wgpu::BufferUsage::CopyDst)) {
return DAWN_VALIDATION_ERROR("Buffer needs the CopyDst usage bit");
}
return {};
}
bool IsRangeOverlapped(uint32_t startA, uint32_t startB, uint32_t length) {
uint32_t maxStart = std::max(startA, startB);
uint32_t minStart = std::min(startA, startB);
return static_cast<uint64_t>(minStart) + static_cast<uint64_t>(length) >
static_cast<uint64_t>(maxStart);
}
template <typename A, typename B>
DAWN_FORCE_INLINE uint64_t Safe32x32(A a, B b) {
static_assert(std::is_same<A, uint32_t>::value, "'a' must be uint32_t");
static_assert(std::is_same<B, uint32_t>::value, "'b' must be uint32_t");
return uint64_t(a) * uint64_t(b);
}
ResultOrError<uint64_t> ComputeRequiredBytesInCopy(const TexelBlockInfo& blockInfo,
const Extent3D& copySize,
uint32_t bytesPerRow,
uint32_t rowsPerImage) {
ASSERT(copySize.width % blockInfo.width == 0);
ASSERT(copySize.height % blockInfo.height == 0);
uint32_t widthInBlocks = copySize.width / blockInfo.width;
uint32_t heightInBlocks = copySize.height / blockInfo.height;
uint64_t bytesInLastRow = Safe32x32(widthInBlocks, blockInfo.byteSize);
if (copySize.depthOrArrayLayers == 0) {
return 0;
}
// Check for potential overflows for the rest of the computations. We have the following
// inequalities:
//
// bytesInLastRow <= bytesPerRow
// heightInBlocks <= rowsPerImage
//
// So:
//
// bytesInLastImage = bytesPerRow * (heightInBlocks - 1) + bytesInLastRow
// <= bytesPerRow * heightInBlocks
// <= bytesPerRow * rowsPerImage
// <= bytesPerImage
//
// This means that if the computation of depth * bytesPerImage doesn't overflow, none of the
// computations for requiredBytesInCopy will. (and it's not a very pessimizing check)
ASSERT(copySize.depthOrArrayLayers <= 1 || (bytesPerRow != wgpu::kCopyStrideUndefined &&
rowsPerImage != wgpu::kCopyStrideUndefined));
uint64_t bytesPerImage = Safe32x32(bytesPerRow, rowsPerImage);
if (bytesPerImage > std::numeric_limits<uint64_t>::max() / copySize.depthOrArrayLayers) {
return DAWN_VALIDATION_ERROR("requiredBytesInCopy is too large.");
}
uint64_t requiredBytesInCopy = bytesPerImage * (copySize.depthOrArrayLayers - 1);
if (heightInBlocks > 0) {
ASSERT(heightInBlocks <= 1 || bytesPerRow != wgpu::kCopyStrideUndefined);
uint64_t bytesInLastImage = Safe32x32(bytesPerRow, heightInBlocks - 1) + bytesInLastRow;
requiredBytesInCopy += bytesInLastImage;
}
return requiredBytesInCopy;
}
MaybeError ValidateCopySizeFitsInBuffer(const Ref<BufferBase>& buffer,
uint64_t offset,
uint64_t size) {
uint64_t bufferSize = buffer->GetSize();
bool fitsInBuffer = offset <= bufferSize && (size <= (bufferSize - offset));
if (!fitsInBuffer) {
return DAWN_VALIDATION_ERROR("Copy would overflow the buffer");
}
return {};
}
// Replace wgpu::kCopyStrideUndefined with real values, so backends don't have to think about
// it.
void ApplyDefaultTextureDataLayoutOptions(TextureDataLayout* layout,
const TexelBlockInfo& blockInfo,
const Extent3D& copyExtent) {
ASSERT(layout != nullptr);
ASSERT(copyExtent.height % blockInfo.height == 0);
uint32_t heightInBlocks = copyExtent.height / blockInfo.height;
if (layout->bytesPerRow == wgpu::kCopyStrideUndefined) {
ASSERT(copyExtent.width % blockInfo.width == 0);
uint32_t widthInBlocks = copyExtent.width / blockInfo.width;
uint32_t bytesInLastRow = widthInBlocks * blockInfo.byteSize;
ASSERT(heightInBlocks <= 1 && copyExtent.depthOrArrayLayers <= 1);
layout->bytesPerRow = Align(bytesInLastRow, kTextureBytesPerRowAlignment);
}
if (layout->rowsPerImage == wgpu::kCopyStrideUndefined) {
ASSERT(copyExtent.depthOrArrayLayers <= 1);
layout->rowsPerImage = heightInBlocks;
}
}
MaybeError ValidateLinearTextureData(const TextureDataLayout& layout,
uint64_t byteSize,
const TexelBlockInfo& blockInfo,
const Extent3D& copyExtent) {
ASSERT(copyExtent.height % blockInfo.height == 0);
uint32_t heightInBlocks = copyExtent.height / blockInfo.height;
if (copyExtent.depthOrArrayLayers > 1 &&
(layout.bytesPerRow == wgpu::kCopyStrideUndefined ||
layout.rowsPerImage == wgpu::kCopyStrideUndefined)) {
return DAWN_VALIDATION_ERROR(
"If copy depth > 1, bytesPerRow and rowsPerImage must be specified.");
}
if (heightInBlocks > 1 && layout.bytesPerRow == wgpu::kCopyStrideUndefined) {
return DAWN_VALIDATION_ERROR("If heightInBlocks > 1, bytesPerRow must be specified.");
}
// Validation for other members in layout:
ASSERT(copyExtent.width % blockInfo.width == 0);
uint32_t widthInBlocks = copyExtent.width / blockInfo.width;
ASSERT(Safe32x32(widthInBlocks, blockInfo.byteSize) <=
std::numeric_limits<uint32_t>::max());
uint32_t bytesInLastRow = widthInBlocks * blockInfo.byteSize;
// These != wgpu::kCopyStrideUndefined checks are technically redundant with the > checks,
// but they should get optimized out.
if (layout.bytesPerRow != wgpu::kCopyStrideUndefined &&
bytesInLastRow > layout.bytesPerRow) {
return DAWN_VALIDATION_ERROR("The byte size of each row must be <= bytesPerRow.");
}
if (layout.rowsPerImage != wgpu::kCopyStrideUndefined &&
heightInBlocks > layout.rowsPerImage) {
return DAWN_VALIDATION_ERROR(
"The height of each image, in blocks, must be <= rowsPerImage.");
}
// We compute required bytes in copy after validating texel block alignments
// because the divisibility conditions are necessary for the algorithm to be valid,
// also the bytesPerRow bound is necessary to avoid overflows.
uint64_t requiredBytesInCopy;
DAWN_TRY_ASSIGN(requiredBytesInCopy,
ComputeRequiredBytesInCopy(blockInfo, copyExtent, layout.bytesPerRow,
layout.rowsPerImage));
bool fitsInData =
layout.offset <= byteSize && (requiredBytesInCopy <= (byteSize - layout.offset));
if (!fitsInData) {
return DAWN_VALIDATION_ERROR(
"Required size for texture data layout exceeds the linear data size.");
}
return {};
}
MaybeError ValidateImageCopyBuffer(DeviceBase const* device,
const ImageCopyBuffer& imageCopyBuffer) {
DAWN_TRY(device->ValidateObject(imageCopyBuffer.buffer));
if (imageCopyBuffer.layout.bytesPerRow != wgpu::kCopyStrideUndefined) {
if (imageCopyBuffer.layout.bytesPerRow % kTextureBytesPerRowAlignment != 0) {
return DAWN_VALIDATION_ERROR("bytesPerRow must be a multiple of 256");
}
}
return {};
}
MaybeError ValidateImageCopyTexture(DeviceBase const* device,
const ImageCopyTexture& textureCopy,
const Extent3D& copySize) {
const TextureBase* texture = textureCopy.texture;
DAWN_TRY(device->ValidateObject(texture));
if (textureCopy.mipLevel >= texture->GetNumMipLevels()) {
return DAWN_VALIDATION_ERROR("mipLevel out of range");
}
DAWN_TRY(ValidateTextureAspect(textureCopy.aspect));
if (SelectFormatAspects(texture->GetFormat(), textureCopy.aspect) == Aspect::None) {
return DAWN_VALIDATION_ERROR("Texture does not have selected aspect for texture copy.");
}
if (texture->GetSampleCount() > 1 || texture->GetFormat().HasDepthOrStencil()) {
Extent3D subresourceSize = texture->GetMipLevelPhysicalSize(textureCopy.mipLevel);
ASSERT(texture->GetDimension() == wgpu::TextureDimension::e2D);
if (textureCopy.origin.x != 0 || textureCopy.origin.y != 0 ||
subresourceSize.width != copySize.width ||
subresourceSize.height != copySize.height) {
return DAWN_VALIDATION_ERROR(
"The entire subresource must be copied when using a depth/stencil texture, or "
"when sample count is greater than 1.");
}
}
return {};
}
MaybeError ValidateTextureCopyRange(DeviceBase const* device,
const ImageCopyTexture& textureCopy,
const Extent3D& copySize) {
const TextureBase* texture = textureCopy.texture;
ASSERT(texture->GetDimension() != wgpu::TextureDimension::e1D);
// Validation for the copy being in-bounds:
Extent3D mipSize = texture->GetMipLevelPhysicalSize(textureCopy.mipLevel);
// For 1D/2D textures, include the array layer as depth so it can be checked with other
// dimensions.
if (texture->GetDimension() != wgpu::TextureDimension::e3D) {
mipSize.depthOrArrayLayers = texture->GetArrayLayers();
}
// All texture dimensions are in uint32_t so by doing checks in uint64_t we avoid
// overflows.
if (static_cast<uint64_t>(textureCopy.origin.x) + static_cast<uint64_t>(copySize.width) >
static_cast<uint64_t>(mipSize.width) ||
static_cast<uint64_t>(textureCopy.origin.y) + static_cast<uint64_t>(copySize.height) >
static_cast<uint64_t>(mipSize.height) ||
static_cast<uint64_t>(textureCopy.origin.z) +
static_cast<uint64_t>(copySize.depthOrArrayLayers) >
static_cast<uint64_t>(mipSize.depthOrArrayLayers)) {
return DAWN_VALIDATION_ERROR("Touching outside of the texture");
}
// Validation for the texel block alignments:
const Format& format = textureCopy.texture->GetFormat();
if (format.isCompressed) {
const TexelBlockInfo& blockInfo = format.GetAspectInfo(textureCopy.aspect).block;
if (textureCopy.origin.x % blockInfo.width != 0) {
return DAWN_VALIDATION_ERROR(
"Offset.x must be a multiple of compressed texture format block width");
}
if (textureCopy.origin.y % blockInfo.height != 0) {
return DAWN_VALIDATION_ERROR(
"Offset.y must be a multiple of compressed texture format block height");
}
if (copySize.width % blockInfo.width != 0) {
return DAWN_VALIDATION_ERROR(
"copySize.width must be a multiple of compressed texture format block width");
}
if (copySize.height % blockInfo.height != 0) {
return DAWN_VALIDATION_ERROR(
"copySize.height must be a multiple of compressed texture format block height");
}
}
return {};
}
// Always returns a single aspect (color, stencil, depth, or ith plane for multi-planar
// formats).
ResultOrError<Aspect> SingleAspectUsedByImageCopyTexture(const ImageCopyTexture& view) {
const Format& format = view.texture->GetFormat();
switch (view.aspect) {
case wgpu::TextureAspect::All:
if (HasOneBit(format.aspects)) {
Aspect single = format.aspects;
return single;
}
return DAWN_VALIDATION_ERROR(
"A single aspect must be selected for multi-planar formats in "
"texture <-> linear data copies");
case wgpu::TextureAspect::DepthOnly:
ASSERT(format.aspects & Aspect::Depth);
return Aspect::Depth;
case wgpu::TextureAspect::StencilOnly:
ASSERT(format.aspects & Aspect::Stencil);
return Aspect::Stencil;
case wgpu::TextureAspect::Plane0Only:
case wgpu::TextureAspect::Plane1Only:
break;
}
UNREACHABLE();
}
MaybeError ValidateLinearToDepthStencilCopyRestrictions(const ImageCopyTexture& dst) {
Aspect aspectUsed;
DAWN_TRY_ASSIGN(aspectUsed, SingleAspectUsedByImageCopyTexture(dst));
if (aspectUsed == Aspect::Depth) {
return DAWN_VALIDATION_ERROR("Cannot copy into the depth aspect of a texture");
}
return {};
}
MaybeError ValidateTextureToTextureCopyCommonRestrictions(const ImageCopyTexture& src,
const ImageCopyTexture& dst,
const Extent3D& copySize) {
const uint32_t srcSamples = src.texture->GetSampleCount();
const uint32_t dstSamples = dst.texture->GetSampleCount();
if (srcSamples != dstSamples) {
return DAWN_VALIDATION_ERROR(
"Source and destination textures must have matching sample counts.");
}
// Metal cannot select a single aspect for texture-to-texture copies.
const Format& format = src.texture->GetFormat();
if (SelectFormatAspects(format, src.aspect) != format.aspects) {
return DAWN_VALIDATION_ERROR(
"Source aspect doesn't select all the aspects of the source format.");
}
if (SelectFormatAspects(format, dst.aspect) != format.aspects) {
return DAWN_VALIDATION_ERROR(
"Destination aspect doesn't select all the aspects of the destination format.");
}
if (src.texture == dst.texture && src.mipLevel == dst.mipLevel) {
wgpu::TextureDimension dimension = src.texture->GetDimension();
ASSERT(dimension != wgpu::TextureDimension::e1D);
if ((dimension == wgpu::TextureDimension::e2D &&
IsRangeOverlapped(src.origin.z, dst.origin.z, copySize.depthOrArrayLayers)) ||
dimension == wgpu::TextureDimension::e3D) {
return DAWN_VALIDATION_ERROR(
"Cannot copy between overlapping subresources of the same texture.");
}
}
return {};
}
MaybeError ValidateTextureToTextureCopyRestrictions(const ImageCopyTexture& src,
const ImageCopyTexture& dst,
const Extent3D& copySize) {
if (src.texture->GetFormat().format != dst.texture->GetFormat().format) {
// Metal requires texture-to-texture copies be the same format
return DAWN_VALIDATION_ERROR("Source and destination texture formats must match.");
}
return ValidateTextureToTextureCopyCommonRestrictions(src, dst, copySize);
}
MaybeError ValidateCanUseAs(const TextureBase* texture, wgpu::TextureUsage usage) {
ASSERT(wgpu::HasZeroOrOneBits(usage));
if (!(texture->GetUsage() & usage)) {
return DAWN_VALIDATION_ERROR("texture doesn't have the required usage.");
}
return {};
}
MaybeError ValidateInternalCanUseAs(const TextureBase* texture, wgpu::TextureUsage usage) {
ASSERT(wgpu::HasZeroOrOneBits(usage));
if (!(texture->GetInternalUsage() & usage)) {
return DAWN_VALIDATION_ERROR("texture doesn't have the required usage.");
}
return {};
}
MaybeError ValidateCanUseAs(const BufferBase* buffer, wgpu::BufferUsage usage) {
ASSERT(wgpu::HasZeroOrOneBits(usage));
if (!(buffer->GetUsage() & usage)) {
return DAWN_VALIDATION_ERROR("buffer doesn't have the required usage.");
}
return {};
}
} // namespace dawn_native