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Manages a single persistently mapped GPU heap which is sub-allocated inside of ring-buffer for uploads. To handle larger buffers without additional unused heaps, ring buffers are created on-demand. BUG=dawn:28 TEST=dawn_unittests Change-Id: If4d3e717186895b1409502c1dea5ab751a4776b2 Reviewed-on: https://dawn-review.googlesource.com/c/4440 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Kai Ninomiya <kainino@chromium.org> Commit-Queue: Bryan Bernhart <bryan.bernhart@intel.com>
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
// Copyright 2018 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_DYNAMICUPLOADER_H_
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#define DAWNNATIVE_DYNAMICUPLOADER_H_
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#include "dawn_native/Forward.h"
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#include "dawn_native/RingBuffer.h"
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// DynamicUploader is the front-end implementation used to manage multiple ring buffers for upload
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// usage.
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namespace dawn_native {
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class DynamicUploader {
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public:
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DynamicUploader(DeviceBase* device);
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~DynamicUploader() = default;
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ResultOrError<UploadHandle> Allocate(uint32_t requiredSize, uint32_t alignment);
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void Tick(Serial lastCompletedSerial);
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RingBuffer* GetLargestBuffer();
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MaybeError CreateAndAppendBuffer(size_t size = kBaseUploadBufferSize);
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bool IsEmpty() const;
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private:
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// TODO(bryan.bernhart@intel.com): Figure out this value.
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static constexpr size_t kBaseUploadBufferSize = 64000;
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std::vector<std::unique_ptr<RingBuffer>> mRingBuffers;
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DeviceBase* mDevice;
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_DYNAMICUPLOADER_H_
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