| // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_CONTEXT_MAC_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_CONTEXT_MAC_H_ |
| |
| #import <AppKit/NSOpenGL.h> |
| #include <OpenGL/OpenGL.h> |
| #include <map> |
| |
| #include "base/basictypes.h" |
| #include "base/lazy_instance.h" |
| #include "base/mac/scoped_nsobject.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "content/public/browser/gpu_data_manager_observer.h" |
| #include "ui/gl/scoped_cgl.h" |
| |
| namespace content { |
| |
| class CompositingIOSurfaceShaderPrograms; |
| |
| class CompositingIOSurfaceContext |
| : public base::RefCounted<CompositingIOSurfaceContext>, |
| public content::GpuDataManagerObserver { |
| public: |
| enum { |
| // The number used to look up the context used for async readback and for |
| // initializing the IOSurface. |
| kOffscreenContextWindowNumber = -2, |
| // The number used to look up the context used by CAOpenGLLayers. |
| kCALayerContextWindowNumber = -3, |
| }; |
| |
| // Get or create a GL context for the specified window with the specified |
| // surface ordering. Share these GL contexts as much as possible because |
| // creating and destroying them can be expensive |
| // http://crbug.com/180463 |
| static scoped_refptr<CompositingIOSurfaceContext> Get(int window_number); |
| |
| // Mark that all the GL contexts in the same sharegroup as this context as |
| // invalid, so they shouldn't be returned anymore by Get, but rather, new |
| // contexts should be created. This is called as a precaution when unexpected |
| // GL errors occur. |
| void PoisonContextAndSharegroup(); |
| bool HasBeenPoisoned() const { return poisoned_; } |
| |
| CompositingIOSurfaceShaderPrograms* shader_program_cache() const { |
| return shader_program_cache_.get(); |
| } |
| CGLContextObj cgl_context() const { return cgl_context_; } |
| int window_number() const { return window_number_; } |
| |
| // content::GpuDataManagerObserver implementation. |
| virtual void OnGpuSwitching() OVERRIDE; |
| |
| private: |
| friend class base::RefCounted<CompositingIOSurfaceContext>; |
| |
| CompositingIOSurfaceContext( |
| int window_number, |
| base::ScopedTypeRef<CGLContextObj> clg_context_strong, |
| CGLContextObj clg_context, |
| scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache); |
| virtual ~CompositingIOSurfaceContext(); |
| |
| int window_number_; |
| base::ScopedTypeRef<CGLContextObj> cgl_context_strong_; |
| // Weak, backed by |cgl_context_strong_|. |
| CGLContextObj cgl_context_; |
| |
| scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache_; |
| bool poisoned_; |
| |
| // The global map from window number and window ordering to |
| // context data. |
| typedef std::map<int, CompositingIOSurfaceContext*> WindowMap; |
| static base::LazyInstance<WindowMap> window_map_; |
| static WindowMap* window_map(); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_CONTEXT_MAC_H_ |