src/content/browser/renderer_host/compositing_iosurface_context_mac.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_CONTEXT_MAC_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_CONTEXT_MAC_H_
   7
   8 #import <AppKit/NSOpenGL.h>
   9 #include <OpenGL/OpenGL.h>
  10 #include <map>
  11
  12 #include "base/basictypes.h"
  13 #include "base/lazy_instance.h"
  14 #include "base/mac/scoped_nsobject.h"
  15 #include "base/memory/ref_counted.h"
  16 #include "base/memory/scoped_ptr.h"
  17 #include "content/public/browser/gpu_data_manager_observer.h"
  18 #include "ui/gl/scoped_cgl.h"
  19
  20 namespace content {
  21
  22 enum CoreAnimationStatus {
  23   CORE_ANIMATION_DISABLED,
  24   CORE_ANIMATION_ENABLED,
  25 };
  26 CoreAnimationStatus GetCoreAnimationStatus();
  27
  28 class CompositingIOSurfaceShaderPrograms;
  29
  30 class CompositingIOSurfaceContext
  31     : public base::RefCounted<CompositingIOSurfaceContext>,
  32       public content::GpuDataManagerObserver {
  33  public:
  34   enum {
  35     // The number used to look up the context used for async readback and for
  36     // initializing the IOSurface.
  37     kOffscreenContextWindowNumber = -2,
  38     // The number used to look up the context used by CAOpenGLLayers.
  39     kCALayerContextWindowNumber = -3,
  40   };
  41
  42   // Get or create a GL context for the specified window with the specified
  43   // surface ordering. Share these GL contexts as much as possible because
  44   // creating and destroying them can be expensive
  45   // http://crbug.com/180463
  46   static scoped_refptr<CompositingIOSurfaceContext> Get(int window_number);
  47
  48   // Mark that all the GL contexts in the same sharegroup as this context as
  49   // invalid, so they shouldn't be returned anymore by Get, but rather, new
  50   // contexts should be created. This is called as a precaution when unexpected
  51   // GL errors occur.
  52   void PoisonContextAndSharegroup();
  53   bool HasBeenPoisoned() const { return poisoned_; }
  54
  55   CompositingIOSurfaceShaderPrograms* shader_program_cache() const {
  56     return shader_program_cache_.get();
  57   }
  58   NSOpenGLContext* nsgl_context() const;
  59   CGLContextObj cgl_context() const { return cgl_context_; }
  60   bool is_vsync_disabled() const { return is_vsync_disabled_; }
  61   int window_number() const { return window_number_; }
  62
  63   // content::GpuDataManagerObserver implementation.
  64   virtual void OnGpuSwitching() OVERRIDE;
  65
  66  private:
  67   friend class base::RefCounted<CompositingIOSurfaceContext>;
  68
  69   CompositingIOSurfaceContext(
  70       int window_number,
  71       NSOpenGLContext* nsgl_context,
  72       base::ScopedTypeRef<CGLContextObj> clg_context_strong,
  73       CGLContextObj clg_context,
  74       bool is_vsync_disabled_,
  75       scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache);
  76   virtual ~CompositingIOSurfaceContext();
  77
  78   int window_number_;
  79   base::scoped_nsobject<NSOpenGLContext> nsgl_context_;
  80   base::ScopedTypeRef<CGLContextObj> cgl_context_strong_;
  81   // Weak, backed by |nsgl_context_| or |cgl_context_strong_|.
  82   CGLContextObj cgl_context_;
  83
  84   bool is_vsync_disabled_;
  85   scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache_;
  86   bool poisoned_;
  87
  88   // The global map from window number and window ordering to
  89   // context data.
  90   typedef std::map<int, CompositingIOSurfaceContext*> WindowMap;
  91   static base::LazyInstance<WindowMap> window_map_;
  92   static WindowMap* window_map();
  93 };
  94
  95 }  // namespace content
  96
  97 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_CONTEXT_MAC_H_