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"
22 void InitializeStaticGLBindingsGL();
23 void InitializeDynamicGLBindingsGL(GLContext* context);
24 void InitializeDebugGLBindingsGL();
25 void InitializeNullDrawGLBindingsGL();
26 // TODO(danakj): Remove this when all test suites are using null-draw.
27 bool HasInitializedNullDrawGLBindingsGL();
28 bool SetNullDrawGLBindingsEnabledGL(bool enabled);
29 void ClearGLBindingsGL();
30 void SetGLToRealGLApi();
31 void SetGLApi(GLApi* api);
32 void SetGLApiToNoContext();
33 const GLVersionInfo* GetGLVersionInfo();
35 class GLApiBase : public GLApi {
37 // Include the auto-generated part of this class. We split this because
38 // it means we can easily edit the non-auto generated parts right here in
39 // this file instead of having to edit some template or the code generator.
40 #include "gl_bindings_api_autogen_gl.h"
45 void InitializeBase(DriverGL* driver);
51 // Implemenents the GL API by calling directly into the driver.
52 class RealGLApi : public GLApiBase {
56 void Initialize(DriverGL* driver);
59 virtual void glFinishFn() OVERRIDE;
60 virtual void glFlushFn() OVERRIDE;
63 // Inserts a TRACE for every GL call.
64 class TraceGLApi : public GLApi {
66 TraceGLApi(GLApi* gl_api) : gl_api_(gl_api) { }
67 virtual ~TraceGLApi();
69 // Include the auto-generated part of this class. We split this because
70 // it means we can easily edit the non-auto generated parts right here in
71 // this file instead of having to edit some template or the code generator.
72 #include "gl_bindings_api_autogen_gl.h"
78 // Catches incorrect usage when GL calls are made without a current context.
79 class NoContextGLApi : public GLApi {
82 virtual ~NoContextGLApi();
84 // Include the auto-generated part of this class. We split this because
85 // it means we can easily edit the non-auto generated parts right here in
86 // this file instead of having to edit some template or the code generator.
87 #include "gl_bindings_api_autogen_gl.h"
90 // Implementents the GL API using co-operative state restoring.
91 // Assumes there is only one real GL context and that multiple virtual contexts
92 // are implemented above it. Restores the needed state from the current context.
93 class VirtualGLApi : public GLApiBase {
96 virtual ~VirtualGLApi();
97 void Initialize(DriverGL* driver, GLContext* real_context);
99 // Sets the current virutal context.
100 bool MakeCurrent(GLContext* virtual_context, GLSurface* surface);
102 void OnReleaseVirtuallyCurrent(GLContext* virtual_context);
105 // Overridden functions from GLApiBase
106 virtual const GLubyte* glGetStringFn(GLenum name) OVERRIDE;
107 virtual void glFinishFn() OVERRIDE;
108 virtual void glFlushFn() OVERRIDE;
110 // The real context we're running on.
111 GLContext* real_context_;
113 // The current virtual context.
114 GLContext* current_context_;
116 // The supported extensions being advertised for this virtual context.
117 std::string extensions_;
122 #endif // UI_GL_GL_GL_API_IMPLEMENTATION_H_