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 "ui/gl/scoped_cgl.h"
  18
  19 namespace content {
  20
  21 enum CoreAnimationStatus {
  22   CORE_ANIMATION_DISABLED,
  23   CORE_ANIMATION_ENABLED,
  24 };
  25 CoreAnimationStatus GetCoreAnimationStatus();
  26
  27 class CompositingIOSurfaceShaderPrograms;
  28
  29 class CompositingIOSurfaceContext
  30     : public base::RefCounted<CompositingIOSurfaceContext> {
  31  public:
  32   enum {
  33     // The number used to look up the context used for async readback and for
  34     // initializing the IOSurface.
  35     kOffscreenContextWindowNumber = -2,
  36     // The number used to look up the context used by CAOpenGLLayers.
  37     kCALayerContextWindowNumber = -3,
  38   };
  39
  40   // Get or create a GL context for the specified window with the specified
  41   // surface ordering. Share these GL contexts as much as possible because
  42   // creating and destroying them can be expensive
  43   // http://crbug.com/180463
  44   static scoped_refptr<CompositingIOSurfaceContext> Get(int window_number);
  45
  46   // Mark that all the currently existing GL contexts shouldn't be returned
  47   // anymore by Get, but rather, new contexts should be created. This is
  48   // called as a precaution when unexpected GL errors occur.
  49   static void MarkExistingContextsAsNotShareable();
  50
  51   CompositingIOSurfaceShaderPrograms* shader_program_cache() const {
  52     return shader_program_cache_.get();
  53   }
  54   NSOpenGLContext* nsgl_context() const;
  55   CGLContextObj cgl_context() const { return cgl_context_; }
  56   bool is_vsync_disabled() const { return is_vsync_disabled_; }
  57   int window_number() const { return window_number_; }
  58
  59   bool IsVendorIntel();
  60
  61  private:
  62   friend class base::RefCounted<CompositingIOSurfaceContext>;
  63
  64   CompositingIOSurfaceContext(
  65       int window_number,
  66       NSOpenGLContext* nsgl_context,
  67       base::ScopedTypeRef<CGLContextObj> clg_context_strong,
  68       CGLContextObj clg_context,
  69       bool is_vsync_disabled_,
  70       scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache);
  71   ~CompositingIOSurfaceContext();
  72
  73   int window_number_;
  74   base::scoped_nsobject<NSOpenGLContext> nsgl_context_;
  75   base::ScopedTypeRef<CGLContextObj> cgl_context_strong_;
  76   // Weak, backed by |nsgl_context_| or |cgl_context_strong_|.
  77   CGLContextObj cgl_context_;
  78
  79   bool is_vsync_disabled_;
  80   scoped_ptr<CompositingIOSurfaceShaderPrograms> shader_program_cache_;
  81   bool can_be_shared_;
  82
  83   bool initialized_is_intel_;
  84   bool is_intel_;
  85   GLint screen_;
  86
  87   // The global map from window number and window ordering to
  88   // context data.
  89   typedef std::map<int, CompositingIOSurfaceContext*> WindowMap;
  90   static base::LazyInstance<WindowMap> window_map_;
  91   static WindowMap* window_map();
  92 };
  93
  94 }  // namespace content
  95
  96 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_CONTEXT_MAC_H_