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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/metal/ComputePipelineMTL.h"
#include "dawn_native/metal/DeviceMTL.h"
#include "dawn_native/metal/ShaderModuleMTL.h"
namespace dawn_native { namespace metal {
// static
ResultOrError<Ref<ComputePipeline>> ComputePipeline::Create(
Device* device,
const ComputePipelineDescriptor* descriptor) {
Ref<ComputePipeline> pipeline = AcquireRef(new ComputePipeline(device, descriptor));
DAWN_TRY(pipeline->Initialize(descriptor));
return pipeline;
}
MaybeError ComputePipeline::Initialize(const ComputePipelineDescriptor* descriptor) {
auto mtlDevice = ToBackend(GetDevice())->GetMTLDevice();
ShaderModule* computeModule = ToBackend(descriptor->computeStage.module);
const char* computeEntryPoint = descriptor->computeStage.entryPoint;
ShaderModule::MetalFunctionData computeData;
DAWN_TRY(computeModule->CreateFunction(computeEntryPoint, SingleShaderStage::Compute,
ToBackend(GetLayout()), &computeData));
NSError* error = nullptr;
mMtlComputePipelineState.Acquire([mtlDevice
newComputePipelineStateWithFunction:computeData.function.Get()
error:&error]);
if (error != nullptr) {
NSLog(@" error => %@", error);
return DAWN_INTERNAL_ERROR("Error creating pipeline state");
}
// Copy over the local workgroup size as it is passed to dispatch explicitly in Metal
Origin3D localSize = GetStage(SingleShaderStage::Compute).metadata->localWorkgroupSize;
mLocalWorkgroupSize = MTLSizeMake(localSize.x, localSize.y, localSize.z);
mRequiresStorageBufferLength = computeData.needsStorageBufferLength;
return {};
}
void ComputePipeline::Encode(id<MTLComputeCommandEncoder> encoder) {
[encoder setComputePipelineState:mMtlComputePipelineState.Get()];
}
MTLSize ComputePipeline::GetLocalWorkGroupSize() const {
return mLocalWorkgroupSize;
}
bool ComputePipeline::RequiresStorageBufferLength() const {
return mRequiresStorageBufferLength;
}
}} // namespace dawn_native::metal