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https://github.com/encounter/dawn-cmake.git
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80f927d763
This patch implements buffer lazy initialization before writeBuffer(): if the buffer is not initialized and writeBuffer() doesn't cover the whole buffer, the buffer will be cleared to 0, otherwise the buffer shouldn't be cleared. This patch also introduces a toggle LazyClearBufferOnFirstUse for the development of buffer lazy initialization: before buffer lazy initialization being completely supported, all the related code will only be enabled behind this toggle to prevent the buffers with valid content being unexpectedly cleared. BUG=dawn:414 TEST=dawn_end2end_tests Change-Id: I99a2aa98ca4b9b21d69c6b32080afb525e2c4ad3 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/24041 Commit-Queue: Jiawei Shao <jiawei.shao@intel.com> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
54 lines
1.6 KiB
C++
54 lines
1.6 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_OPENGL_BUFFERGL_H_
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#define DAWNNATIVE_OPENGL_BUFFERGL_H_
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#include "dawn_native/Buffer.h"
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#include "dawn_native/opengl/opengl_platform.h"
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namespace dawn_native { namespace opengl {
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class Device;
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class Buffer final : public BufferBase {
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public:
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Buffer(Device* device, const BufferDescriptor* descriptor);
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GLuint GetHandle() const;
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void ClearBufferContentsToZero();
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private:
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~Buffer() override;
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// Dawn API
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MaybeError MapReadAsyncImpl(uint32_t serial) override;
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MaybeError MapWriteAsyncImpl(uint32_t serial) override;
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void UnmapImpl() override;
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void DestroyImpl() override;
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bool IsMapWritable() const override;
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MaybeError MapAtCreationImpl(uint8_t** mappedPointer) override;
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void* GetMappedPointerImpl() override;
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uint64_t GetAppliedSize() const;
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GLuint mBuffer = 0;
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void* mMappedData = nullptr;
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};
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}} // namespace dawn_native::opengl
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#endif // DAWNNATIVE_OPENGL_BUFFERGL_H_
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