1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef RENDER_BACKEND_H
17 #define RENDER_BACKEND_H
18 
19 #include <base/containers/vector.h>
20 #include <core/namespace.h>
21 #include <render/datastore/render_data_store_render_pods.h>
22 #include <render/device/pipeline_state_desc.h>
23 #include <render/namespace.h>
24 
25 RENDER_BEGIN_NAMESPACE()
26 class Device;
27 class GpuResourceManager;
28 struct RenderCommandContext;
29 struct RenderCommandFrameData;
30 
31 struct RenderBackendBackBufferConfiguration {
32     struct SwapchainData {
33         RenderHandle handle;
34         // state after render node graph processing
35         GpuResourceState backBufferState;
36         // layout after render node graph processing
37         ImageLayout layout { ImageLayout::CORE_IMAGE_LAYOUT_UNDEFINED };
38         // configuration for the back buffer
39         NodeGraphBackBufferConfiguration config;
40     };
41     BASE_NS::vector<SwapchainData> swapchainData;
42 };
43 
44 class RenderBackend {
45 public:
46     RenderBackend() = default;
47     virtual ~RenderBackend() = default;
48 
49     virtual void Render(RenderCommandFrameData& renderCommandFrameData,
50         const RenderBackendBackBufferConfiguration& backBufferConfig) = 0;
51     virtual void Present(const RenderBackendBackBufferConfiguration& backBufferConfig) = 0;
52 
53 private:
54 };
55 RENDER_END_NAMESPACE()
56 
57 #endif // RENDER_BACKEND_H
58