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dawn-cmake/src/dawn_native/RenderPipeline.cpp
Jiawei Shao b7c7f62829 Implement inter-stage variable matching rules - Part II 
This patch implements the inter-stage variable matching rules on
the interpolation attributes ('interpolation type' and
'interpolation sampling'). WebGPU SPEC requires that the interpolation
attributes must match between vertex outputs and fragment inputs with
the same location assignment within the same pipeline.

BUG=dawn:802
TEST=dawn_unittests

Change-Id: Ied38d68f73868c30b0392954683963a801e3f3aa
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/60160
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
2021-07-30 00:40:26 +00:00

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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 "dawn_native/RenderPipeline.h"
#include "common/BitSetIterator.h"
#include "dawn_native/ChainUtils_autogen.h"
#include "dawn_native/Commands.h"
#include "dawn_native/Device.h"
#include "dawn_native/ObjectContentHasher.h"
#include "dawn_native/ValidationUtils_autogen.h"
#include "dawn_native/VertexFormat.h"
#include <cmath>
#include <sstream>
namespace dawn_native {
// Helper functions
namespace {
MaybeError ValidateVertexAttribute(
DeviceBase* device,
const VertexAttribute* attribute,
const EntryPointMetadata& metadata,
uint64_t vertexBufferStride,
ityp::bitset<VertexAttributeLocation, kMaxVertexAttributes>* attributesSetMask) {
DAWN_TRY(ValidateVertexFormat(attribute->format));
const VertexFormatInfo& formatInfo = GetVertexFormatInfo(attribute->format);
if (attribute->shaderLocation >= kMaxVertexAttributes) {
return DAWN_VALIDATION_ERROR("Setting attribute out of bounds");
}
VertexAttributeLocation location(static_cast<uint8_t>(attribute->shaderLocation));
// No underflow is possible because the max vertex format size is smaller than
// kMaxVertexBufferArrayStride.
ASSERT(kMaxVertexBufferArrayStride >= formatInfo.byteSize);
if (attribute->offset > kMaxVertexBufferArrayStride - formatInfo.byteSize) {
return DAWN_VALIDATION_ERROR("Setting attribute offset out of bounds");
}
// No overflow is possible because the offset is already validated to be less
// than kMaxVertexBufferArrayStride.
ASSERT(attribute->offset < kMaxVertexBufferArrayStride);
if (vertexBufferStride > 0 &&
attribute->offset + formatInfo.byteSize > vertexBufferStride) {
return DAWN_VALIDATION_ERROR("Setting attribute offset out of bounds");
}
if (attribute->offset % std::min(4u, formatInfo.byteSize) != 0) {
return DAWN_VALIDATION_ERROR(
"Attribute offset needs to be a multiple of min(4, formatSize)");
}
if (metadata.usedVertexInputs[location] &&
formatInfo.baseType != metadata.vertexInputBaseTypes[location]) {
return DAWN_VALIDATION_ERROR(
"Attribute base type must match the base type in the shader.");
}
if ((*attributesSetMask)[location]) {
return DAWN_VALIDATION_ERROR("Setting already set attribute");
}
attributesSetMask->set(location);
return {};
}
MaybeError ValidateVertexBufferLayout(
DeviceBase* device,
const VertexBufferLayout* buffer,
const EntryPointMetadata& metadata,
ityp::bitset<VertexAttributeLocation, kMaxVertexAttributes>* attributesSetMask) {
DAWN_TRY(ValidateVertexStepMode(buffer->stepMode));
if (buffer->arrayStride > kMaxVertexBufferArrayStride) {
return DAWN_VALIDATION_ERROR("Setting arrayStride out of bounds");
}
if (buffer->arrayStride % 4 != 0) {
return DAWN_VALIDATION_ERROR(
"arrayStride of Vertex buffer needs to be a multiple of 4 bytes");
}
for (uint32_t i = 0; i < buffer->attributeCount; ++i) {
DAWN_TRY(ValidateVertexAttribute(device, &buffer->attributes[i], metadata,
buffer->arrayStride, attributesSetMask));
}
return {};
}
MaybeError ValidateVertexState(DeviceBase* device,
const VertexState* descriptor,
const PipelineLayoutBase* layout) {
if (descriptor->nextInChain != nullptr) {
return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
}
if (descriptor->bufferCount > kMaxVertexBuffers) {
return DAWN_VALIDATION_ERROR("Vertex buffer count exceeds maximum");
}
DAWN_TRY(ValidateProgrammableStage(device, descriptor->module, descriptor->entryPoint,
layout, SingleShaderStage::Vertex));
const EntryPointMetadata& vertexMetadata =
descriptor->module->GetEntryPoint(descriptor->entryPoint);
ityp::bitset<VertexAttributeLocation, kMaxVertexAttributes> attributesSetMask;
uint32_t totalAttributesNum = 0;
for (uint32_t i = 0; i < descriptor->bufferCount; ++i) {
DAWN_TRY(ValidateVertexBufferLayout(device, &descriptor->buffers[i], vertexMetadata,
&attributesSetMask));
totalAttributesNum += descriptor->buffers[i].attributeCount;
}
// Every vertex attribute has a member called shaderLocation, and there are some
// requirements for shaderLocation: 1) >=0, 2) values are different across different
// attributes, 3) can't exceed kMaxVertexAttributes. So it can ensure that total
// attribute number never exceed kMaxVertexAttributes.
ASSERT(totalAttributesNum <= kMaxVertexAttributes);
if (!IsSubset(vertexMetadata.usedVertexInputs, attributesSetMask)) {
return DAWN_VALIDATION_ERROR(
"Pipeline vertex stage uses vertex buffers not in the vertex state");
}
return {};
}
MaybeError ValidatePrimitiveState(const DeviceBase* device,
const PrimitiveState* descriptor) {
DAWN_TRY(ValidateSingleSType(descriptor->nextInChain,
wgpu::SType::PrimitiveDepthClampingState));
const PrimitiveDepthClampingState* clampInfo = nullptr;
FindInChain(descriptor->nextInChain, &clampInfo);
if (clampInfo && !device->IsExtensionEnabled(Extension::DepthClamping)) {
return DAWN_VALIDATION_ERROR("The depth clamping feature is not supported");
}
DAWN_TRY(ValidatePrimitiveTopology(descriptor->topology));
DAWN_TRY(ValidateIndexFormat(descriptor->stripIndexFormat));
DAWN_TRY(ValidateFrontFace(descriptor->frontFace));
DAWN_TRY(ValidateCullMode(descriptor->cullMode));
// Pipeline descriptors must have stripIndexFormat != undefined IFF they are using strip
// topologies.
if (IsStripPrimitiveTopology(descriptor->topology)) {
if (descriptor->stripIndexFormat == wgpu::IndexFormat::Undefined) {
return DAWN_VALIDATION_ERROR(
"stripIndexFormat must not be undefined when using strip primitive "
"topologies");
}
} else if (descriptor->stripIndexFormat != wgpu::IndexFormat::Undefined) {
return DAWN_VALIDATION_ERROR(
"stripIndexFormat must be undefined when using non-strip primitive topologies");
}
return {};
}
MaybeError ValidateDepthStencilState(const DeviceBase* device,
const DepthStencilState* descriptor) {
if (descriptor->nextInChain != nullptr) {
return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
}
DAWN_TRY(ValidateCompareFunction(descriptor->depthCompare));
DAWN_TRY(ValidateCompareFunction(descriptor->stencilFront.compare));
DAWN_TRY(ValidateStencilOperation(descriptor->stencilFront.failOp));
DAWN_TRY(ValidateStencilOperation(descriptor->stencilFront.depthFailOp));
DAWN_TRY(ValidateStencilOperation(descriptor->stencilFront.passOp));
DAWN_TRY(ValidateCompareFunction(descriptor->stencilBack.compare));
DAWN_TRY(ValidateStencilOperation(descriptor->stencilBack.failOp));
DAWN_TRY(ValidateStencilOperation(descriptor->stencilBack.depthFailOp));
DAWN_TRY(ValidateStencilOperation(descriptor->stencilBack.passOp));
const Format* format;
DAWN_TRY_ASSIGN(format, device->GetInternalFormat(descriptor->format));
if (!format->HasDepthOrStencil() || !format->isRenderable) {
return DAWN_VALIDATION_ERROR(
"Depth stencil format must be depth-stencil renderable");
}
if (std::isnan(descriptor->depthBiasSlopeScale) ||
std::isnan(descriptor->depthBiasClamp)) {
return DAWN_VALIDATION_ERROR("Depth bias parameters must not be NaN.");
}
return {};
}
MaybeError ValidateMultisampleState(const MultisampleState* descriptor) {
if (descriptor->nextInChain != nullptr) {
return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
}
if (!IsValidSampleCount(descriptor->count)) {
return DAWN_VALIDATION_ERROR("Multisample count is not supported");
}
if (descriptor->alphaToCoverageEnabled && descriptor->count <= 1) {
return DAWN_VALIDATION_ERROR("Enabling alphaToCoverage requires sample count > 1");
}
return {};
}
static constexpr wgpu::BlendFactor kFirstDeprecatedBlendFactor =
wgpu::BlendFactor::SrcColor;
static constexpr uint32_t kDeprecatedBlendFactorOffset = 100;
bool IsDeprecatedBlendFactor(wgpu::BlendFactor blendFactor) {
return blendFactor >= kFirstDeprecatedBlendFactor;
}
wgpu::BlendFactor NormalizeBlendFactor(wgpu::BlendFactor blendFactor) {
// If the specified format is from the deprecated range return the corresponding
// non-deprecated format.
if (blendFactor >= kFirstDeprecatedBlendFactor) {
uint32_t blendFactorValue = static_cast<uint32_t>(blendFactor);
return static_cast<wgpu::BlendFactor>(blendFactorValue -
kDeprecatedBlendFactorOffset);
}
return blendFactor;
}
MaybeError ValidateBlendState(DeviceBase* device, const BlendState* descriptor) {
DAWN_TRY(ValidateBlendOperation(descriptor->alpha.operation));
DAWN_TRY(ValidateBlendFactor(descriptor->alpha.srcFactor));
DAWN_TRY(ValidateBlendFactor(descriptor->alpha.dstFactor));
DAWN_TRY(ValidateBlendOperation(descriptor->color.operation));
DAWN_TRY(ValidateBlendFactor(descriptor->color.srcFactor));
DAWN_TRY(ValidateBlendFactor(descriptor->color.dstFactor));
if (IsDeprecatedBlendFactor(descriptor->alpha.srcFactor) ||
IsDeprecatedBlendFactor(descriptor->alpha.dstFactor) ||
IsDeprecatedBlendFactor(descriptor->color.srcFactor) ||
IsDeprecatedBlendFactor(descriptor->color.dstFactor)) {
device->EmitDeprecationWarning(
"Blend factor enums have changed and the old enums will be removed soon.");
}
return {};
}
MaybeError ValidateColorTargetState(DeviceBase* device,
const ColorTargetState* descriptor,
bool fragmentWritten,
wgpu::TextureComponentType fragmentOutputBaseType) {
if (descriptor->nextInChain != nullptr) {
return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
}
if (descriptor->blend) {
DAWN_TRY(ValidateBlendState(device, descriptor->blend));
}
DAWN_TRY(ValidateColorWriteMask(descriptor->writeMask));
const Format* format;
DAWN_TRY_ASSIGN(format, device->GetInternalFormat(descriptor->format));
if (!format->IsColor() || !format->isRenderable) {
return DAWN_VALIDATION_ERROR("Color format must be color renderable");
}
if (descriptor->blend && !(format->GetAspectInfo(Aspect::Color).supportedSampleTypes &
SampleTypeBit::Float)) {
return DAWN_VALIDATION_ERROR(
"Color format must be blendable when blending is enabled");
}
if (fragmentWritten) {
if (fragmentOutputBaseType != format->GetAspectInfo(Aspect::Color).baseType) {
return DAWN_VALIDATION_ERROR(
"Color format must match the fragment stage output type");
}
} else {
if (descriptor->writeMask != wgpu::ColorWriteMask::None) {
return DAWN_VALIDATION_ERROR(
"writeMask must be zero for color targets with no corresponding fragment "
"stage output");
}
}
return {};
}
MaybeError ValidateFragmentState(DeviceBase* device,
const FragmentState* descriptor,
const PipelineLayoutBase* layout) {
if (descriptor->nextInChain != nullptr) {
return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
}
DAWN_TRY(ValidateProgrammableStage(device, descriptor->module, descriptor->entryPoint,
layout, SingleShaderStage::Fragment));
if (descriptor->targetCount > kMaxColorAttachments) {
return DAWN_VALIDATION_ERROR("Number of color targets exceeds maximum");
}
const EntryPointMetadata& fragmentMetadata =
descriptor->module->GetEntryPoint(descriptor->entryPoint);
for (ColorAttachmentIndex i(uint8_t(0));
i < ColorAttachmentIndex(static_cast<uint8_t>(descriptor->targetCount)); ++i) {
DAWN_TRY(
ValidateColorTargetState(device, &descriptor->targets[static_cast<uint8_t>(i)],
fragmentMetadata.fragmentOutputsWritten[i],
fragmentMetadata.fragmentOutputFormatBaseTypes[i]));
}
return {};
}
MaybeError ValidateInterStageMatching(DeviceBase* device,
const VertexState& vertexState,
const FragmentState& fragmentState) {
const EntryPointMetadata& vertexMetadata =
vertexState.module->GetEntryPoint(vertexState.entryPoint);
const EntryPointMetadata& fragmentMetadata =
fragmentState.module->GetEntryPoint(fragmentState.entryPoint);
if (vertexMetadata.usedInterStageVariables !=
fragmentMetadata.usedInterStageVariables) {
return DAWN_VALIDATION_ERROR(
"One or more fragment inputs and vertex outputs are not one-to-one matching");
}
auto generateErrorString = [](const char* interStageAttribute, size_t location) {
std::ostringstream stream;
stream << "The " << interStageAttribute << " of the vertex output at location "
<< location
<< " is different from the one of the fragment input at the same location";
return stream.str();
};
// TODO(dawn:802): Validate interpolation types and interpolition sampling types
for (size_t i : IterateBitSet(vertexMetadata.usedInterStageVariables)) {
const auto& vertexOutputInfo = vertexMetadata.interStageVariables[i];
const auto& fragmentInputInfo = fragmentMetadata.interStageVariables[i];
if (vertexOutputInfo.baseType != fragmentInputInfo.baseType) {
return DAWN_VALIDATION_ERROR(generateErrorString("base type", i));
}
if (vertexOutputInfo.componentCount != fragmentInputInfo.componentCount) {
return DAWN_VALIDATION_ERROR(generateErrorString("componentCount", i));
}
if (vertexOutputInfo.interpolationType != fragmentInputInfo.interpolationType) {
return DAWN_VALIDATION_ERROR(generateErrorString("interpolation type", i));
}
if (vertexOutputInfo.interpolationSampling !=
fragmentInputInfo.interpolationSampling) {
return DAWN_VALIDATION_ERROR(generateErrorString("interpolation sampling", i));
}
}
return {};
}
} // anonymous namespace
// Helper functions
size_t IndexFormatSize(wgpu::IndexFormat format) {
switch (format) {
case wgpu::IndexFormat::Uint16:
return sizeof(uint16_t);
case wgpu::IndexFormat::Uint32:
return sizeof(uint32_t);
case wgpu::IndexFormat::Undefined:
UNREACHABLE();
}
}
bool IsStripPrimitiveTopology(wgpu::PrimitiveTopology primitiveTopology) {
return primitiveTopology == wgpu::PrimitiveTopology::LineStrip ||
primitiveTopology == wgpu::PrimitiveTopology::TriangleStrip;
}
MaybeError ValidateRenderPipelineDescriptor(DeviceBase* device,
const RenderPipelineDescriptor* descriptor) {
if (descriptor->nextInChain != nullptr) {
return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
}
if (descriptor->layout != nullptr) {
DAWN_TRY(device->ValidateObject(descriptor->layout));
}
// TODO(crbug.com/dawn/136): Support vertex-only pipelines.
if (descriptor->fragment == nullptr) {
return DAWN_VALIDATION_ERROR("Null fragment stage is not supported (yet)");
}
DAWN_TRY(ValidateVertexState(device, &descriptor->vertex, descriptor->layout));
DAWN_TRY(ValidatePrimitiveState(device, &descriptor->primitive));
if (descriptor->depthStencil) {
DAWN_TRY(ValidateDepthStencilState(device, descriptor->depthStencil));
}
DAWN_TRY(ValidateMultisampleState(&descriptor->multisample));
ASSERT(descriptor->fragment != nullptr);
DAWN_TRY(ValidateFragmentState(device, descriptor->fragment, descriptor->layout));
if (descriptor->fragment->targetCount == 0 && !descriptor->depthStencil) {
return DAWN_VALIDATION_ERROR("Should have at least one color target or a depthStencil");
}
DAWN_TRY(ValidateInterStageMatching(device, descriptor->vertex, *(descriptor->fragment)));
return {};
}
std::vector<StageAndDescriptor> GetStages(const RenderPipelineDescriptor* descriptor) {
std::vector<StageAndDescriptor> stages;
stages.push_back(
{SingleShaderStage::Vertex, descriptor->vertex.module, descriptor->vertex.entryPoint});
if (descriptor->fragment != nullptr) {
stages.push_back({SingleShaderStage::Fragment, descriptor->fragment->module,
descriptor->fragment->entryPoint});
}
return stages;
}
bool StencilTestEnabled(const DepthStencilState* mDepthStencil) {
return mDepthStencil->stencilBack.compare != wgpu::CompareFunction::Always ||
mDepthStencil->stencilBack.failOp != wgpu::StencilOperation::Keep ||
mDepthStencil->stencilBack.depthFailOp != wgpu::StencilOperation::Keep ||
mDepthStencil->stencilBack.passOp != wgpu::StencilOperation::Keep ||
mDepthStencil->stencilFront.compare != wgpu::CompareFunction::Always ||
mDepthStencil->stencilFront.failOp != wgpu::StencilOperation::Keep ||
mDepthStencil->stencilFront.depthFailOp != wgpu::StencilOperation::Keep ||
mDepthStencil->stencilFront.passOp != wgpu::StencilOperation::Keep;
}
// RenderPipelineBase
RenderPipelineBase::RenderPipelineBase(DeviceBase* device,
const RenderPipelineDescriptor* descriptor)
: PipelineBase(device,
descriptor->layout,
{{SingleShaderStage::Vertex, descriptor->vertex.module,
descriptor->vertex.entryPoint},
{SingleShaderStage::Fragment, descriptor->fragment->module,
descriptor->fragment->entryPoint}}),
mAttachmentState(device->GetOrCreateAttachmentState(descriptor)) {
mVertexBufferCount = descriptor->vertex.bufferCount;
const VertexBufferLayout* buffers = descriptor->vertex.buffers;
for (uint8_t slot = 0; slot < mVertexBufferCount; ++slot) {
if (buffers[slot].attributeCount == 0) {
continue;
}
VertexBufferSlot typedSlot(slot);
mVertexBufferSlotsUsed.set(typedSlot);
mVertexBufferInfos[typedSlot].arrayStride = buffers[slot].arrayStride;
mVertexBufferInfos[typedSlot].stepMode = buffers[slot].stepMode;
switch (buffers[slot].stepMode) {
case wgpu::VertexStepMode::Vertex:
mVertexBufferSlotsUsedAsVertexBuffer.set(typedSlot);
break;
case wgpu::VertexStepMode::Instance:
mVertexBufferSlotsUsedAsInstanceBuffer.set(typedSlot);
break;
default:
DAWN_UNREACHABLE();
}
for (uint32_t i = 0; i < buffers[slot].attributeCount; ++i) {
VertexAttributeLocation location = VertexAttributeLocation(
static_cast<uint8_t>(buffers[slot].attributes[i].shaderLocation));
mAttributeLocationsUsed.set(location);
mAttributeInfos[location].shaderLocation = location;
mAttributeInfos[location].vertexBufferSlot = typedSlot;
mAttributeInfos[location].offset = buffers[slot].attributes[i].offset;
mAttributeInfos[location].format = buffers[slot].attributes[i].format;
}
}
mPrimitive = descriptor->primitive;
const PrimitiveDepthClampingState* clampInfo = nullptr;
FindInChain(mPrimitive.nextInChain, &clampInfo);
if (clampInfo) {
mClampDepth = clampInfo->clampDepth;
}
mMultisample = descriptor->multisample;
if (mAttachmentState->HasDepthStencilAttachment()) {
mDepthStencil = *descriptor->depthStencil;
} else {
// These default values below are useful for backends to fill information.
// The values indicate that depth and stencil test are disabled when backends
// set their own depth stencil states/descriptors according to the values in
// mDepthStencil.
mDepthStencil.format = wgpu::TextureFormat::Undefined;
mDepthStencil.depthWriteEnabled = false;
mDepthStencil.depthCompare = wgpu::CompareFunction::Always;
mDepthStencil.stencilBack.compare = wgpu::CompareFunction::Always;
mDepthStencil.stencilBack.failOp = wgpu::StencilOperation::Keep;
mDepthStencil.stencilBack.depthFailOp = wgpu::StencilOperation::Keep;
mDepthStencil.stencilBack.passOp = wgpu::StencilOperation::Keep;
mDepthStencil.stencilFront.compare = wgpu::CompareFunction::Always;
mDepthStencil.stencilFront.failOp = wgpu::StencilOperation::Keep;
mDepthStencil.stencilFront.depthFailOp = wgpu::StencilOperation::Keep;
mDepthStencil.stencilFront.passOp = wgpu::StencilOperation::Keep;
mDepthStencil.stencilReadMask = 0xff;
mDepthStencil.stencilWriteMask = 0xff;
mDepthStencil.depthBias = 0;
mDepthStencil.depthBiasSlopeScale = 0.0f;
mDepthStencil.depthBiasClamp = 0.0f;
}
for (ColorAttachmentIndex i : IterateBitSet(mAttachmentState->GetColorAttachmentsMask())) {
const ColorTargetState* target =
&descriptor->fragment->targets[static_cast<uint8_t>(i)];
mTargets[i] = *target;
if (target->blend != nullptr) {
mTargetBlend[i] = *target->blend;
mTargets[i].blend = &mTargetBlend[i];
mTargetBlend[i].alpha.srcFactor =
NormalizeBlendFactor(mTargetBlend[i].alpha.srcFactor);
mTargetBlend[i].alpha.dstFactor =
NormalizeBlendFactor(mTargetBlend[i].alpha.dstFactor);
mTargetBlend[i].color.srcFactor =
NormalizeBlendFactor(mTargetBlend[i].color.srcFactor);
mTargetBlend[i].color.dstFactor =
NormalizeBlendFactor(mTargetBlend[i].color.dstFactor);
}
}
}
RenderPipelineBase::RenderPipelineBase(DeviceBase* device, ObjectBase::ErrorTag tag)
: PipelineBase(device, tag) {
}
// static
RenderPipelineBase* RenderPipelineBase::MakeError(DeviceBase* device) {
return new RenderPipelineBase(device, ObjectBase::kError);
}
RenderPipelineBase::~RenderPipelineBase() {
if (IsCachedReference()) {
GetDevice()->UncacheRenderPipeline(this);
}
}
const ityp::bitset<VertexAttributeLocation, kMaxVertexAttributes>&
RenderPipelineBase::GetAttributeLocationsUsed() const {
ASSERT(!IsError());
return mAttributeLocationsUsed;
}
const VertexAttributeInfo& RenderPipelineBase::GetAttribute(
VertexAttributeLocation location) const {
ASSERT(!IsError());
ASSERT(mAttributeLocationsUsed[location]);
return mAttributeInfos[location];
}
const ityp::bitset<VertexBufferSlot, kMaxVertexBuffers>&
RenderPipelineBase::GetVertexBufferSlotsUsed() const {
ASSERT(!IsError());
return mVertexBufferSlotsUsed;
}
const ityp::bitset<VertexBufferSlot, kMaxVertexBuffers>&
RenderPipelineBase::GetVertexBufferSlotsUsedAsVertexBuffer() const {
ASSERT(!IsError());
return mVertexBufferSlotsUsedAsVertexBuffer;
}
const ityp::bitset<VertexBufferSlot, kMaxVertexBuffers>&
RenderPipelineBase::GetVertexBufferSlotsUsedAsInstanceBuffer() const {
ASSERT(!IsError());
return mVertexBufferSlotsUsedAsInstanceBuffer;
}
const VertexBufferInfo& RenderPipelineBase::GetVertexBuffer(VertexBufferSlot slot) const {
ASSERT(!IsError());
ASSERT(mVertexBufferSlotsUsed[slot]);
return mVertexBufferInfos[slot];
}
uint32_t RenderPipelineBase::GetVertexBufferCount() const {
ASSERT(!IsError());
return mVertexBufferCount;
}
const ColorTargetState* RenderPipelineBase::GetColorTargetState(
ColorAttachmentIndex attachmentSlot) const {
ASSERT(!IsError());
ASSERT(attachmentSlot < mTargets.size());
return &mTargets[attachmentSlot];
}
const DepthStencilState* RenderPipelineBase::GetDepthStencilState() const {
ASSERT(!IsError());
return &mDepthStencil;
}
wgpu::PrimitiveTopology RenderPipelineBase::GetPrimitiveTopology() const {
ASSERT(!IsError());
return mPrimitive.topology;
}
wgpu::IndexFormat RenderPipelineBase::GetStripIndexFormat() const {
ASSERT(!IsError());
return mPrimitive.stripIndexFormat;
}
wgpu::CullMode RenderPipelineBase::GetCullMode() const {
ASSERT(!IsError());
return mPrimitive.cullMode;
}
wgpu::FrontFace RenderPipelineBase::GetFrontFace() const {
ASSERT(!IsError());
return mPrimitive.frontFace;
}
bool RenderPipelineBase::IsDepthBiasEnabled() const {
ASSERT(!IsError());
return mDepthStencil.depthBias != 0 || mDepthStencil.depthBiasSlopeScale != 0;
}
int32_t RenderPipelineBase::GetDepthBias() const {
ASSERT(!IsError());
return mDepthStencil.depthBias;
}
float RenderPipelineBase::GetDepthBiasSlopeScale() const {
ASSERT(!IsError());
return mDepthStencil.depthBiasSlopeScale;
}
float RenderPipelineBase::GetDepthBiasClamp() const {
ASSERT(!IsError());
return mDepthStencil.depthBiasClamp;
}
bool RenderPipelineBase::ShouldClampDepth() const {
ASSERT(!IsError());
return mClampDepth;
}
ityp::bitset<ColorAttachmentIndex, kMaxColorAttachments>
RenderPipelineBase::GetColorAttachmentsMask() const {
ASSERT(!IsError());
return mAttachmentState->GetColorAttachmentsMask();
}
bool RenderPipelineBase::HasDepthStencilAttachment() const {
ASSERT(!IsError());
return mAttachmentState->HasDepthStencilAttachment();
}
wgpu::TextureFormat RenderPipelineBase::GetColorAttachmentFormat(
ColorAttachmentIndex attachment) const {
ASSERT(!IsError());
return mTargets[attachment].format;
}
wgpu::TextureFormat RenderPipelineBase::GetDepthStencilFormat() const {
ASSERT(!IsError());
ASSERT(mAttachmentState->HasDepthStencilAttachment());
return mDepthStencil.format;
}
uint32_t RenderPipelineBase::GetSampleCount() const {
ASSERT(!IsError());
return mAttachmentState->GetSampleCount();
}
uint32_t RenderPipelineBase::GetSampleMask() const {
ASSERT(!IsError());
return mMultisample.mask;
}
bool RenderPipelineBase::IsAlphaToCoverageEnabled() const {
ASSERT(!IsError());
return mMultisample.alphaToCoverageEnabled;
}
const AttachmentState* RenderPipelineBase::GetAttachmentState() const {
ASSERT(!IsError());
return mAttachmentState.Get();
}
size_t RenderPipelineBase::ComputeContentHash() {
ObjectContentHasher recorder;
// Record modules and layout
recorder.Record(PipelineBase::ComputeContentHash());
// Hierarchically record the attachment state.
// It contains the attachments set, texture formats, and sample count.
recorder.Record(mAttachmentState->GetContentHash());
// Record attachments
for (ColorAttachmentIndex i : IterateBitSet(mAttachmentState->GetColorAttachmentsMask())) {
const ColorTargetState& desc = *GetColorTargetState(i);
recorder.Record(desc.writeMask);
if (desc.blend != nullptr) {
recorder.Record(desc.blend->color.operation, desc.blend->color.srcFactor,
desc.blend->color.dstFactor);
recorder.Record(desc.blend->alpha.operation, desc.blend->alpha.srcFactor,
desc.blend->alpha.dstFactor);
}
}
if (mAttachmentState->HasDepthStencilAttachment()) {
const DepthStencilState& desc = mDepthStencil;
recorder.Record(desc.depthWriteEnabled, desc.depthCompare);
recorder.Record(desc.stencilReadMask, desc.stencilWriteMask);
recorder.Record(desc.stencilFront.compare, desc.stencilFront.failOp,
desc.stencilFront.depthFailOp, desc.stencilFront.passOp);
recorder.Record(desc.stencilBack.compare, desc.stencilBack.failOp,
desc.stencilBack.depthFailOp, desc.stencilBack.passOp);
recorder.Record(desc.depthBias, desc.depthBiasSlopeScale, desc.depthBiasClamp);
}
// Record vertex state
recorder.Record(mAttributeLocationsUsed);
for (VertexAttributeLocation location : IterateBitSet(mAttributeLocationsUsed)) {
const VertexAttributeInfo& desc = GetAttribute(location);
recorder.Record(desc.shaderLocation, desc.vertexBufferSlot, desc.offset, desc.format);
}
recorder.Record(mVertexBufferSlotsUsed);
for (VertexBufferSlot slot : IterateBitSet(mVertexBufferSlotsUsed)) {
const VertexBufferInfo& desc = GetVertexBuffer(slot);
recorder.Record(desc.arrayStride, desc.stepMode);
}
// Record primitive state
recorder.Record(mPrimitive.topology, mPrimitive.stripIndexFormat, mPrimitive.frontFace,
mPrimitive.cullMode, mClampDepth);
// Record multisample state
// Sample count hashed as part of the attachment state
recorder.Record(mMultisample.mask, mMultisample.alphaToCoverageEnabled);
return recorder.GetContentHash();
}
bool RenderPipelineBase::EqualityFunc::operator()(const RenderPipelineBase* a,
const RenderPipelineBase* b) const {
// Check the layout and shader stages.
if (!PipelineBase::EqualForCache(a, b)) {
return false;
}
// Check the attachment state.
// It contains the attachments set, texture formats, and sample count.
if (a->mAttachmentState.Get() != b->mAttachmentState.Get()) {
return false;
}
for (ColorAttachmentIndex i :
IterateBitSet(a->mAttachmentState->GetColorAttachmentsMask())) {
const ColorTargetState& descA = *a->GetColorTargetState(i);
const ColorTargetState& descB = *b->GetColorTargetState(i);
if (descA.writeMask != descB.writeMask) {
return false;
}
if ((descA.blend == nullptr) != (descB.blend == nullptr)) {
return false;
}
if (descA.blend != nullptr) {
if (descA.blend->color.operation != descB.blend->color.operation ||
descA.blend->color.srcFactor != descB.blend->color.srcFactor ||
descA.blend->color.dstFactor != descB.blend->color.dstFactor) {
return false;
}
if (descA.blend->alpha.operation != descB.blend->alpha.operation ||
descA.blend->alpha.srcFactor != descB.blend->alpha.srcFactor ||
descA.blend->alpha.dstFactor != descB.blend->alpha.dstFactor) {
return false;
}
}
}
// Check depth/stencil state
if (a->mAttachmentState->HasDepthStencilAttachment()) {
const DepthStencilState& stateA = a->mDepthStencil;
const DepthStencilState& stateB = b->mDepthStencil;
ASSERT(!std::isnan(stateA.depthBiasSlopeScale));
ASSERT(!std::isnan(stateB.depthBiasSlopeScale));
ASSERT(!std::isnan(stateA.depthBiasClamp));
ASSERT(!std::isnan(stateB.depthBiasClamp));
if (stateA.depthWriteEnabled != stateB.depthWriteEnabled ||
stateA.depthCompare != stateB.depthCompare ||
stateA.depthBias != stateB.depthBias ||
stateA.depthBiasSlopeScale != stateB.depthBiasSlopeScale ||
stateA.depthBiasClamp != stateB.depthBiasClamp) {
return false;
}
if (stateA.stencilFront.compare != stateB.stencilFront.compare ||
stateA.stencilFront.failOp != stateB.stencilFront.failOp ||
stateA.stencilFront.depthFailOp != stateB.stencilFront.depthFailOp ||
stateA.stencilFront.passOp != stateB.stencilFront.passOp) {
return false;
}
if (stateA.stencilBack.compare != stateB.stencilBack.compare ||
stateA.stencilBack.failOp != stateB.stencilBack.failOp ||
stateA.stencilBack.depthFailOp != stateB.stencilBack.depthFailOp ||
stateA.stencilBack.passOp != stateB.stencilBack.passOp) {
return false;
}
if (stateA.stencilReadMask != stateB.stencilReadMask ||
stateA.stencilWriteMask != stateB.stencilWriteMask) {
return false;
}
}
// Check vertex state
if (a->mAttributeLocationsUsed != b->mAttributeLocationsUsed) {
return false;
}
for (VertexAttributeLocation loc : IterateBitSet(a->mAttributeLocationsUsed)) {
const VertexAttributeInfo& descA = a->GetAttribute(loc);
const VertexAttributeInfo& descB = b->GetAttribute(loc);
if (descA.shaderLocation != descB.shaderLocation ||
descA.vertexBufferSlot != descB.vertexBufferSlot || descA.offset != descB.offset ||
descA.format != descB.format) {
return false;
}
}
if (a->mVertexBufferSlotsUsed != b->mVertexBufferSlotsUsed) {
return false;
}
for (VertexBufferSlot slot : IterateBitSet(a->mVertexBufferSlotsUsed)) {
const VertexBufferInfo& descA = a->GetVertexBuffer(slot);
const VertexBufferInfo& descB = b->GetVertexBuffer(slot);
if (descA.arrayStride != descB.arrayStride || descA.stepMode != descB.stepMode) {
return false;
}
}
// Check primitive state
{
const PrimitiveState& stateA = a->mPrimitive;
const PrimitiveState& stateB = b->mPrimitive;
if (stateA.topology != stateB.topology ||
stateA.stripIndexFormat != stateB.stripIndexFormat ||
stateA.frontFace != stateB.frontFace || stateA.cullMode != stateB.cullMode ||
a->mClampDepth != b->mClampDepth) {
return false;
}
}
// Check multisample state
{
const MultisampleState& stateA = a->mMultisample;
const MultisampleState& stateB = b->mMultisample;
// Sample count already checked as part of the attachment state.
if (stateA.mask != stateB.mask ||
stateA.alphaToCoverageEnabled != stateB.alphaToCoverageEnabled) {
return false;
}
}
return true;
}
} // namespace dawn_native
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