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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/PipelineLayout.h"
#include "dawn_native/ShaderModule.h"
namespace dawn_native {
MaybeError ValidateProgrammableStageDescriptor(const DeviceBase* device,
const ProgrammableStageDescriptor* descriptor,
const PipelineLayoutBase* layout,
SingleShaderStage stage) {
DAWN_TRY(device->ValidateObject(descriptor->module));
if (descriptor->entryPoint != std::string("main")) {
return DAWN_VALIDATION_ERROR("Entry point must be \"main\"");
}
if (descriptor->module->GetExecutionModel() != stage) {
return DAWN_VALIDATION_ERROR("Setting module with wrong stages");
}
if (layout != nullptr && !descriptor->module->IsCompatibleWithPipelineLayout(layout)) {
return DAWN_VALIDATION_ERROR("Stage not compatible with layout");
}
return {};
}
// PipelineBase
PipelineBase::PipelineBase(DeviceBase* device,
PipelineLayoutBase* layout,
wgpu::ShaderStage stages)
: CachedObject(device), mStageMask(stages), mLayout(layout) {
}
PipelineBase::PipelineBase(DeviceBase* device, ObjectBase::ErrorTag tag)
: CachedObject(device, tag) {
}
wgpu::ShaderStage PipelineBase::GetStageMask() const {
ASSERT(!IsError());
return mStageMask;
}
PipelineLayoutBase* PipelineBase::GetLayout() {
ASSERT(!IsError());
return mLayout.Get();
}
const PipelineLayoutBase* PipelineBase::GetLayout() const {
ASSERT(!IsError());
return mLayout.Get();
}
MaybeError PipelineBase::ValidateGetBindGroupLayout(uint32_t groupIndex) {
DAWN_TRY(GetDevice()->ValidateIsAlive());
DAWN_TRY(GetDevice()->ValidateObject(this));
DAWN_TRY(GetDevice()->ValidateObject(mLayout.Get()));
if (groupIndex >= kMaxBindGroups) {
return DAWN_VALIDATION_ERROR("Bind group layout index out of bounds");
}
return {};
}
BindGroupLayoutBase* PipelineBase::GetBindGroupLayout(uint32_t groupIndex) {
if (GetDevice()->ConsumedError(ValidateGetBindGroupLayout(groupIndex))) {
return BindGroupLayoutBase::MakeError(GetDevice());
}
if (!mLayout->GetBindGroupLayoutsMask()[groupIndex]) {
// Get or create an empty bind group layout.
// TODO(enga): Consider caching this object on the Device and reusing it.
// Today, this can't be done correctly because of the order of Device destruction.
// For example, vulkan::~Device will be called before ~DeviceBase. If DeviceBase owns
// a Ref<BindGroupLayoutBase>, then the VkDevice will be destroyed before the
// VkDescriptorSetLayout.
BindGroupLayoutDescriptor desc = {};
desc.entryCount = 0;
desc.entries = nullptr;
BindGroupLayoutBase* bgl = nullptr;
if (GetDevice()->ConsumedError(GetDevice()->GetOrCreateBindGroupLayout(&desc), &bgl)) {
return BindGroupLayoutBase::MakeError(GetDevice());
}
return bgl;
}
BindGroupLayoutBase* bgl = mLayout->GetBindGroupLayout(groupIndex);
bgl->Reference();
return bgl;
}
} // namespace dawn_native