blob: 9912f94de269f8daf0c166549f924db77e2d465b [file] [log] [blame]
// 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/PipelineLayoutMTL.h"
#include "common/BitSetIterator.h"
#include "dawn_native/BindGroupLayout.h"
#include "dawn_native/metal/DeviceMTL.h"
namespace dawn_native { namespace metal {
PipelineLayout::PipelineLayout(Device* device, const PipelineLayoutDescriptor* descriptor)
: PipelineLayoutBase(device, descriptor) {
// Each stage has its own numbering namespace in CompilerMSL.
for (auto stage : IterateStages(kAllStages)) {
// Buffer number 0 is reserved for push constants
uint32_t bufferIndex = 1;
uint32_t samplerIndex = 0;
uint32_t textureIndex = 0;
for (uint32_t group : IterateBitSet(GetBindGroupLayoutsMask())) {
const auto& groupInfo = GetBindGroupLayout(group)->GetBindingInfo();
for (size_t binding = 0; binding < kMaxBindingsPerGroup; ++binding) {
if (!(groupInfo.visibilities[binding] & StageBit(stage))) {
continue;
}
if (!groupInfo.mask[binding]) {
continue;
}
switch (groupInfo.types[binding]) {
case dawn::BindingType::UniformBuffer:
case dawn::BindingType::StorageBuffer:
mIndexInfo[stage][group][binding] = bufferIndex;
bufferIndex++;
break;
case dawn::BindingType::Sampler:
mIndexInfo[stage][group][binding] = samplerIndex;
samplerIndex++;
break;
case dawn::BindingType::SampledTexture:
mIndexInfo[stage][group][binding] = textureIndex;
textureIndex++;
break;
}
}
}
}
}
const PipelineLayout::BindingIndexInfo& PipelineLayout::GetBindingIndexInfo(
dawn::ShaderStage stage) const {
return mIndexInfo[stage];
}
}} // namespace dawn_native::metal