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This patch makes the |layout| member of the Render|ComputePipelineDescriptor optional. If it is not provided, a default layout is created from the ShaderModules provided and used to replace the layout in the descriptor. Then, pipeline.GetBindGroupLayout may be called to get the existing, or the computed bind group layout. If no bind group layout exists at the provided index, an empty bind group layout is returned. Bug: dawn:276 Change-Id: I276ed0296a2f1f2d8131fa906a4aefe85d75b3a7 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/13741 Commit-Queue: Austin Eng <enga@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Jiawei Shao <jiawei.shao@intel.com>
74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
// Copyright 2017 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef DAWNNATIVE_PIPELINELAYOUT_H_
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#define DAWNNATIVE_PIPELINELAYOUT_H_
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#include "common/Constants.h"
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#include "dawn_native/CachedObject.h"
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#include "dawn_native/Error.h"
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#include "dawn_native/Forward.h"
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#include "dawn_native/dawn_platform.h"
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#include <array>
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#include <bitset>
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namespace dawn_native {
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MaybeError ValidatePipelineLayoutDescriptor(DeviceBase*,
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const PipelineLayoutDescriptor* descriptor);
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using BindGroupLayoutArray = std::array<Ref<BindGroupLayoutBase>, kMaxBindGroups>;
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class PipelineLayoutBase : public CachedObject {
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public:
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PipelineLayoutBase(DeviceBase* device, const PipelineLayoutDescriptor* descriptor);
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~PipelineLayoutBase() override;
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static PipelineLayoutBase* MakeError(DeviceBase* device);
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static ResultOrError<PipelineLayoutBase*>
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CreateDefault(DeviceBase* device, const ShaderModuleBase* const* modules, uint32_t count);
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const BindGroupLayoutBase* GetBindGroupLayout(uint32_t group) const;
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BindGroupLayoutBase* GetBindGroupLayout(uint32_t group);
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const std::bitset<kMaxBindGroups> GetBindGroupLayoutsMask() const;
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// Utility functions to compute inherited bind groups.
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// Returns the inherited bind groups as a mask.
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std::bitset<kMaxBindGroups> InheritedGroupsMask(const PipelineLayoutBase* other) const;
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// Returns the index of the first incompatible bind group in the range
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// [1, kMaxBindGroups + 1]
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uint32_t GroupsInheritUpTo(const PipelineLayoutBase* other) const;
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// Functors necessary for the unordered_set<PipelineLayoutBase*>-based cache.
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struct HashFunc {
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size_t operator()(const PipelineLayoutBase* pl) const;
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};
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struct EqualityFunc {
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bool operator()(const PipelineLayoutBase* a, const PipelineLayoutBase* b) const;
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};
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protected:
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PipelineLayoutBase(DeviceBase* device, ObjectBase::ErrorTag tag);
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BindGroupLayoutArray mBindGroupLayouts;
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std::bitset<kMaxBindGroups> mMask;
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_PIPELINELAYOUT_H_
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