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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/Pipeline.h"
#include "dawn_native/BindGroupLayout.h"
#include "dawn_native/Device.h"
#include "dawn_native/ObjectBase.h"
#include "dawn_native/ObjectContentHasher.h"
#include "dawn_native/PipelineLayout.h"
#include "dawn_native/ShaderModule.h"
namespace dawn_native {
MaybeError ValidateProgrammableStage(DeviceBase* device,
const ShaderModuleBase* module,
const std::string& entryPoint,
uint32_t constantCount,
const ConstantEntry* constants,
const PipelineLayoutBase* layout,
SingleShaderStage stage) {
DAWN_TRY(device->ValidateObject(module));
DAWN_INVALID_IF(!module->HasEntryPoint(entryPoint),
"Entry point \"%s\" doesn't exist in the shader module %s.", entryPoint,
module);
const EntryPointMetadata& metadata = module->GetEntryPoint(entryPoint);
DAWN_INVALID_IF(metadata.stage != stage,
"The stage (%s) of the entry point \"%s\" isn't the expected one (%s).",
metadata.stage, entryPoint, stage);
if (layout != nullptr) {
DAWN_TRY(ValidateCompatibilityWithPipelineLayout(device, metadata, layout));
}
if (constantCount > 0u && device->IsToggleEnabled(Toggle::DisallowUnsafeAPIs)) {
return DAWN_VALIDATION_ERROR(
"Pipeline overridable constants are disallowed because they are partially "
"implemented.");
}
// Validate if overridable constants exist in shader module
// pipelineBase is not yet constructed at this moment so iterate constants from descriptor
size_t numUninitializedConstants = metadata.uninitializedOverridableConstants.size();
// Keep a initialized constants sets to handle duplicate initialization cases
// Only storing that of uninialized constants is needed
std::unordered_set<std::string> stageInitializedConstantIdentifiers;
for (uint32_t i = 0; i < constantCount; i++) {
DAWN_INVALID_IF(metadata.overridableConstants.count(constants[i].key) == 0,
"Pipeline overridable constant \"%s\" not found in shader module %s.",
constants[i].key, module);
if (metadata.uninitializedOverridableConstants.count(constants[i].key) > 0 &&
stageInitializedConstantIdentifiers.count(constants[i].key) == 0) {
numUninitializedConstants--;
stageInitializedConstantIdentifiers.insert(constants[i].key);
}
}
// Validate if any overridable constant is left uninitialized
if (DAWN_UNLIKELY(numUninitializedConstants > 0)) {
std::string uninitializedConstantsArray;
bool isFirst = true;
for (std::string identifier : metadata.uninitializedOverridableConstants) {
if (stageInitializedConstantIdentifiers.count(identifier) > 0) {
continue;
}
if (isFirst) {
isFirst = false;
} else {
uninitializedConstantsArray.append(", ");
}
uninitializedConstantsArray.append(identifier);
}
return DAWN_FORMAT_VALIDATION_ERROR(
"There are uninitialized pipeline overridable constants in shader module %s, their "
"identifiers:[%s]",
module, uninitializedConstantsArray);
}
return {};
}
// PipelineBase
PipelineBase::PipelineBase(DeviceBase* device,
PipelineLayoutBase* layout,
const char* label,
std::vector<StageAndDescriptor> stages)
: ApiObjectBase(device, label), mLayout(layout) {
ASSERT(!stages.empty());
for (const StageAndDescriptor& stage : stages) {
// Extract argument for this stage.
SingleShaderStage shaderStage = stage.shaderStage;
ShaderModuleBase* module = stage.module;
const char* entryPointName = stage.entryPoint.c_str();
const EntryPointMetadata& metadata = module->GetEntryPoint(entryPointName);
ASSERT(metadata.stage == shaderStage);
// Record them internally.
bool isFirstStage = mStageMask == wgpu::ShaderStage::None;
mStageMask |= StageBit(shaderStage);
mStages[shaderStage] = {module, entryPointName, &metadata,
std::vector<PipelineConstantEntry>()};
auto& constants = mStages[shaderStage].constants;
for (uint32_t i = 0; i < stage.constantCount; i++) {
constants.emplace_back(stage.constants[i].key, stage.constants[i].value);
}
// Compute the max() of all minBufferSizes across all stages.
RequiredBufferSizes stageMinBufferSizes =
ComputeRequiredBufferSizesForLayout(metadata, layout);
if (isFirstStage) {
mMinBufferSizes = std::move(stageMinBufferSizes);
} else {
for (BindGroupIndex group(0); group < mMinBufferSizes.size(); ++group) {
ASSERT(stageMinBufferSizes[group].size() == mMinBufferSizes[group].size());
for (size_t i = 0; i < stageMinBufferSizes[group].size(); ++i) {
mMinBufferSizes[group][i] =
std::max(mMinBufferSizes[group][i], stageMinBufferSizes[group][i]);
}
}
}
}
}
PipelineBase::PipelineBase(DeviceBase* device, ObjectBase::ErrorTag tag)
: ApiObjectBase(device, tag) {
}
PipelineLayoutBase* PipelineBase::GetLayout() {
ASSERT(!IsError());
return mLayout.Get();
}
const PipelineLayoutBase* PipelineBase::GetLayout() const {
ASSERT(!IsError());
return mLayout.Get();
}
const RequiredBufferSizes& PipelineBase::GetMinBufferSizes() const {
ASSERT(!IsError());
return mMinBufferSizes;
}
const ProgrammableStage& PipelineBase::GetStage(SingleShaderStage stage) const {
ASSERT(!IsError());
return mStages[stage];
}
const PerStage<ProgrammableStage>& PipelineBase::GetAllStages() const {
return mStages;
}
wgpu::ShaderStage PipelineBase::GetStageMask() const {
return mStageMask;
}
MaybeError PipelineBase::ValidateGetBindGroupLayout(uint32_t groupIndex) {
DAWN_TRY(GetDevice()->ValidateIsAlive());
DAWN_TRY(GetDevice()->ValidateObject(this));
DAWN_TRY(GetDevice()->ValidateObject(mLayout.Get()));
DAWN_INVALID_IF(
groupIndex >= kMaxBindGroups,
"Bind group layout index (%u) exceeds the maximum number of bind groups (%u).",
groupIndex, kMaxBindGroups);
return {};
}
ResultOrError<Ref<BindGroupLayoutBase>> PipelineBase::GetBindGroupLayout(
uint32_t groupIndexIn) {
DAWN_TRY(ValidateGetBindGroupLayout(groupIndexIn));
BindGroupIndex groupIndex(groupIndexIn);
if (!mLayout->GetBindGroupLayoutsMask()[groupIndex]) {
return Ref<BindGroupLayoutBase>(GetDevice()->GetEmptyBindGroupLayout());
} else {
return Ref<BindGroupLayoutBase>(mLayout->GetBindGroupLayout(groupIndex));
}
}
BindGroupLayoutBase* PipelineBase::APIGetBindGroupLayout(uint32_t groupIndexIn) {
Ref<BindGroupLayoutBase> result;
if (GetDevice()->ConsumedError(GetBindGroupLayout(groupIndexIn), &result,
"Validating GetBindGroupLayout (%u) on %s", groupIndexIn,
this)) {
return BindGroupLayoutBase::MakeError(GetDevice());
}
return result.Detach();
}
size_t PipelineBase::ComputeContentHash() {
ObjectContentHasher recorder;
recorder.Record(mLayout->GetContentHash());
recorder.Record(mStageMask);
for (SingleShaderStage stage : IterateStages(mStageMask)) {
recorder.Record(mStages[stage].module->GetContentHash());
recorder.Record(mStages[stage].entryPoint);
}
return recorder.GetContentHash();
}
// static
bool PipelineBase::EqualForCache(const PipelineBase* a, const PipelineBase* b) {
// The layout is deduplicated so it can be compared by pointer.
if (a->mLayout.Get() != b->mLayout.Get() || a->mStageMask != b->mStageMask) {
return false;
}
for (SingleShaderStage stage : IterateStages(a->mStageMask)) {
// The module is deduplicated so it can be compared by pointer.
if (a->mStages[stage].module.Get() != b->mStages[stage].module.Get() ||
a->mStages[stage].entryPoint != b->mStages[stage].entryPoint) {
return false;
}
}
return true;
}
} // namespace dawn_native