src/backend/d3d12/ResourceUploader.h

// 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.

#ifndef BACKEND_D3D12_RESOURCEUPLOADER_H_
#define BACKEND_D3D12_RESOURCEUPLOADER_H_

#include "backend/d3d12/d3d12_platform.h"

#include "backend/Forward.h"

namespace backend { namespace d3d12 {

    class Device;

    class ResourceUploader {
      public:
        ResourceUploader(Device* device);

        void BufferSubData(ComPtr<ID3D12Resource> resource,
                           uint32_t start,
                           uint32_t count,
                           const void* data);

      private:
        struct UploadHandle {
            ComPtr<ID3D12Resource> resource;
            uint8_t* mappedBuffer;
        };

        UploadHandle GetUploadBuffer(uint32_t requiredSize);
        void Release(UploadHandle uploadHandle);

        Device* mDevice;
    };
}}  // namespace backend::d3d12

#endif  // BACKEND_D3D12_RESOURCEUPLOADER_H_