76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
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// Copyright 2019 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_ATTACHMENTSTATE_H_
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#define DAWNNATIVE_ATTACHMENTSTATE_H_
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#include "common/Constants.h"
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#include "dawn_native/RefCounted.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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class DeviceBase;
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// AttachmentStateBlueprint and AttachmentState are separated so the AttachmentState
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// can be constructed by copying the blueprint state instead of traversing descriptors.
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// Also, AttachmentStateBlueprint does not need a refcount like AttachmentState.
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class AttachmentStateBlueprint {
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public:
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// Note: Descriptors must be validated before the AttachmentState is constructed.
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AttachmentStateBlueprint(const RenderPipelineDescriptor* descriptor);
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AttachmentStateBlueprint(const RenderPassDescriptor* descriptor);
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AttachmentStateBlueprint(const AttachmentStateBlueprint& rhs);
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// Functors necessary for the unordered_set<AttachmentState*>-based cache.
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struct HashFunc {
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size_t operator()(const AttachmentStateBlueprint* attachmentState) const;
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};
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struct EqualityFunc {
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bool operator()(const AttachmentStateBlueprint* a,
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const AttachmentStateBlueprint* b) const;
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};
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protected:
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std::bitset<kMaxColorAttachments> mColorAttachmentsSet;
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std::array<dawn::TextureFormat, kMaxColorAttachments> mColorFormats;
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bool mHasDepthStencilAttachment = false;
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dawn::TextureFormat mDepthStencilFormat;
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uint32_t mSampleCount = 0;
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};
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class AttachmentState : public AttachmentStateBlueprint, public RefCounted {
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public:
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AttachmentState(DeviceBase* device, const AttachmentStateBlueprint& blueprint);
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~AttachmentState() override;
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std::bitset<kMaxColorAttachments> GetColorAttachmentsMask() const;
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dawn::TextureFormat GetColorAttachmentFormat(uint32_t index) const;
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bool HasDepthStencilAttachment() const;
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dawn::TextureFormat GetDepthStencilFormat() const;
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uint32_t GetSampleCount() const;
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private:
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DeviceBase* mDevice;
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_ATTACHMENTSTATE_H_
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