| /* |
| * Copyright 2014 Google Inc. All Rights Reserved. |
| * |
| * 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 COBALT_RENDERER_BACKEND_RENDER_TARGET_H_ |
| #define COBALT_RENDERER_BACKEND_RENDER_TARGET_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "cobalt/math/size.h" |
| |
| namespace cobalt { |
| namespace renderer { |
| namespace backend { |
| |
| struct SurfaceInfo; |
| |
| // A RenderTarget is an object that can be rendered to. |
| // A GraphicsContext will always be associated with a render target, to which |
| // its graphics commands will render on. Render targets will typically be |
| // associated with a display like a TV or monitor for which output should be |
| // rendered to, but they can also be created out of textures for offscreen |
| // rendering. Render targets are reference counted so that shutdown of |
| // render targets being rendered to asynchronously can be postponed until |
| // after rendering is completed. |
| class RenderTarget : public base::RefCountedThreadSafe<RenderTarget> { |
| public: |
| // Return metadata about the render target such as dimensions and format. |
| virtual const math::Size& GetSize() = 0; |
| |
| // Returns a platform-specific handle to the render target that can be |
| // passed into platform-specific code. |
| virtual intptr_t GetPlatformHandle() = 0; |
| |
| protected: |
| // Concrete child classes should declare their destructors as private. |
| friend class base::RefCountedThreadSafe<RenderTarget>; |
| virtual ~RenderTarget() {} |
| }; |
| |
| } // namespace backend |
| } // namespace renderer |
| } // namespace cobalt |
| |
| #endif // COBALT_RENDERER_BACKEND_RENDER_TARGET_H_ |