Updating trunk VERSION from 2139.0 to 2140.0
[chromium-blink-merge.git] / ui / gl / gl_gl_api_implementation.h
blob22faccd689763a5563a635950fde3e3046fa06d1
1 // Copyright (c) 2012 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.
5 #ifndef UI_GL_GL_GL_API_IMPLEMENTATION_H_
6 #define UI_GL_GL_GL_API_IMPLEMENTATION_H_
8 #include "base/compiler_specific.h"
9 #include "ui/gl/gl_bindings.h"
10 #include "ui/gl/gl_export.h"
12 namespace gpu {
13 namespace gles2 {
14 class GLES2Decoder;
17 namespace gfx {
19 class GLContext;
20 class GLSurface;
21 struct GLVersionInfo;
23 void InitializeStaticGLBindingsGL();
24 void InitializeDynamicGLBindingsGL(GLContext* context);
25 void InitializeDebugGLBindingsGL();
26 void InitializeNullDrawGLBindingsGL();
27 // TODO(danakj): Remove this when all test suites are using null-draw.
28 bool HasInitializedNullDrawGLBindingsGL();
29 bool SetNullDrawGLBindingsEnabledGL(bool enabled);
30 void ClearGLBindingsGL();
31 void SetGLToRealGLApi();
32 void SetGLApi(GLApi* api);
33 void SetGLApiToNoContext();
34 const GLVersionInfo* GetGLVersionInfo();
36 class GLApiBase : public GLApi {
37 public:
38 // Include the auto-generated part of this class. We split this because
39 // it means we can easily edit the non-auto generated parts right here in
40 // this file instead of having to edit some template or the code generator.
41 #include "gl_bindings_api_autogen_gl.h"
43 protected:
44 GLApiBase();
45 virtual ~GLApiBase();
46 void InitializeBase(DriverGL* driver);
47 void SignalFlush();
49 DriverGL* driver_;
52 // Implemenents the GL API by calling directly into the driver.
53 class RealGLApi : public GLApiBase {
54 public:
55 RealGLApi();
56 virtual ~RealGLApi();
57 void Initialize(DriverGL* driver);
59 private:
60 virtual void glFinishFn() OVERRIDE;
61 virtual void glFlushFn() OVERRIDE;
64 // Inserts a TRACE for every GL call.
65 class TraceGLApi : public GLApi {
66 public:
67 TraceGLApi(GLApi* gl_api) : gl_api_(gl_api) { }
68 virtual ~TraceGLApi();
70 // Include the auto-generated part of this class. We split this because
71 // it means we can easily edit the non-auto generated parts right here in
72 // this file instead of having to edit some template or the code generator.
73 #include "gl_bindings_api_autogen_gl.h"
75 private:
76 GLApi* gl_api_;
79 // Catches incorrect usage when GL calls are made without a current context.
80 class NoContextGLApi : public GLApi {
81 public:
82 NoContextGLApi();
83 virtual ~NoContextGLApi();
85 // Include the auto-generated part of this class. We split this because
86 // it means we can easily edit the non-auto generated parts right here in
87 // this file instead of having to edit some template or the code generator.
88 #include "gl_bindings_api_autogen_gl.h"
91 // Implementents the GL API using co-operative state restoring.
92 // Assumes there is only one real GL context and that multiple virtual contexts
93 // are implemented above it. Restores the needed state from the current context.
94 class VirtualGLApi : public GLApiBase {
95 public:
96 VirtualGLApi();
97 virtual ~VirtualGLApi();
98 void Initialize(DriverGL* driver, GLContext* real_context);
100 // Sets the current virutal context.
101 bool MakeCurrent(GLContext* virtual_context, GLSurface* surface);
103 void OnReleaseVirtuallyCurrent(GLContext* virtual_context);
105 private:
106 // Overridden functions from GLApiBase
107 virtual const GLubyte* glGetStringFn(GLenum name) OVERRIDE;
108 virtual void glFinishFn() OVERRIDE;
109 virtual void glFlushFn() OVERRIDE;
111 // The real context we're running on.
112 GLContext* real_context_;
114 // The current virtual context.
115 GLContext* current_context_;
117 // The supported extensions being advertised for this virtual context.
118 std::string extensions_;
121 class GL_EXPORT ScopedSetGLToRealGLApi {
122 public:
123 ScopedSetGLToRealGLApi();
124 ~ScopedSetGLToRealGLApi();
126 private:
127 GLApi* old_gl_api_;
130 } // namespace gfx
132 #endif // UI_GL_GL_GL_API_IMPLEMENTATION_H_