| // Copyright 2014 The Cobalt Authors. 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_GRAPHICS_CONTEXT_STUB_H_ |
| #define COBALT_RENDERER_BACKEND_GRAPHICS_CONTEXT_STUB_H_ |
| |
| #include <memory> |
| |
| #include "base/memory/ref_counted.h" |
| #include "cobalt/base/polymorphic_downcast.h" |
| #include "cobalt/renderer/backend/graphics_context.h" |
| #include "cobalt/renderer/backend/render_target_stub.h" |
| |
| namespace cobalt { |
| namespace renderer { |
| namespace backend { |
| |
| // An implementation of GraphicsContext for the stub graphics system. |
| // Most methods are simply stubbed out and so this object does very little |
| // besides fight off compiler errors. |
| class GraphicsContextStub : public GraphicsContext { |
| public: |
| explicit GraphicsContextStub(GraphicsSystem* system) |
| : GraphicsContext(system) {} |
| |
| scoped_refptr<RenderTarget> CreateOffscreenRenderTarget( |
| const math::Size& dimensions) override { |
| return scoped_refptr<RenderTarget>(new RenderTargetStub(dimensions)); |
| } |
| |
| std::unique_ptr<uint8_t[]> DownloadPixelDataAsRGBA( |
| const scoped_refptr<RenderTarget>& render_target) override { |
| // Since we're a stub, just return garbage data of the right size. |
| return std::unique_ptr<uint8_t[]>( |
| new uint8_t[render_target->GetSize().GetArea() * 4]); |
| } |
| |
| void Finish() override {} |
| }; |
| |
| } // namespace backend |
| } // namespace renderer |
| } // namespace cobalt |
| |
| #endif // COBALT_RENDERER_BACKEND_GRAPHICS_CONTEXT_STUB_H_ |