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.
4
5#ifndef UI_GL_GL_SURFACE_EGL_H_
6#define UI_GL_GL_SURFACE_EGL_H_
7
8#if defined(OS_WIN)
9#include <windows.h>
10#endif
11
12#include <string>
13
14#include "base/compiler_specific.h"
15#include "base/time/time.h"
16#include "ui/gfx/native_widget_types.h"
17#include "ui/gfx/size.h"
18#include "ui/gfx/vsync_provider.h"
19#include "ui/gl/gl_bindings.h"
20#include "ui/gl/gl_surface.h"
21
22namespace gfx {
23
24// Interface for EGL surface.
25class GL_EXPORT GLSurfaceEGL : public GLSurface {
26 public:
27  GLSurfaceEGL();
28
29  // Implement GLSurface.
30  virtual EGLDisplay GetDisplay() OVERRIDE;
31
32  static bool InitializeOneOff();
33  static EGLDisplay GetHardwareDisplay();
34  static EGLNativeDisplayType GetNativeDisplay();
35
36  // These aren't particularly tied to surfaces, but since we already
37  // have the static InitializeOneOff here, it's easiest to reuse its
38  // initialization guards.
39  static const char* GetEGLExtensions();
40  static bool HasEGLExtension(const char* name);
41  static bool IsCreateContextRobustnessSupported();
42
43 protected:
44  virtual ~GLSurfaceEGL();
45
46 private:
47  DISALLOW_COPY_AND_ASSIGN(GLSurfaceEGL);
48};
49
50// Encapsulates an EGL surface bound to a view.
51class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
52 public:
53  explicit NativeViewGLSurfaceEGL(gfx::AcceleratedWidget window);
54
55  // Implement GLSurface.
56  virtual EGLConfig GetConfig() OVERRIDE;
57  virtual bool Initialize() OVERRIDE;
58  virtual void Destroy() OVERRIDE;
59  virtual bool Resize(const gfx::Size& size) OVERRIDE;
60  virtual bool Recreate() OVERRIDE;
61  virtual bool IsOffscreen() OVERRIDE;
62  virtual bool SwapBuffers() OVERRIDE;
63  virtual gfx::Size GetSize() OVERRIDE;
64  virtual EGLSurface GetHandle() OVERRIDE;
65  virtual std::string GetExtensions() OVERRIDE;
66  virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE;
67  virtual VSyncProvider* GetVSyncProvider() OVERRIDE;
68
69  // Create a NativeViewGLSurfaceEGL with an externally provided VSyncProvider.
70  // Takes ownership of the VSyncProvider.
71  virtual bool Initialize(VSyncProvider* sync_provider);
72
73 protected:
74  virtual ~NativeViewGLSurfaceEGL();
75  void SetHandle(EGLSurface surface);
76
77 private:
78  gfx::AcceleratedWidget window_;
79  EGLSurface surface_;
80  bool supports_post_sub_buffer_;
81  EGLConfig config_;
82
83  scoped_ptr<VSyncProvider> vsync_provider_;
84
85  DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceEGL);
86};
87
88// Encapsulates a pbuffer EGL surface.
89class GL_EXPORT PbufferGLSurfaceEGL : public GLSurfaceEGL {
90 public:
91  explicit PbufferGLSurfaceEGL(const gfx::Size& size);
92
93  // Implement GLSurface.
94  virtual EGLConfig GetConfig() OVERRIDE;
95  virtual bool Initialize() OVERRIDE;
96  virtual void Destroy() OVERRIDE;
97  virtual bool IsOffscreen() OVERRIDE;
98  virtual bool SwapBuffers() OVERRIDE;
99  virtual gfx::Size GetSize() OVERRIDE;
100  virtual bool Resize(const gfx::Size& size) OVERRIDE;
101  virtual EGLSurface GetHandle() OVERRIDE;
102  virtual void* GetShareHandle() OVERRIDE;
103
104 protected:
105  virtual ~PbufferGLSurfaceEGL();
106
107 private:
108  gfx::Size size_;
109  EGLSurface surface_;
110
111  DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceEGL);
112};
113
114// SurfacelessEGL is used as Offscreen surface when platform supports
115// KHR_surfaceless_context and GL_OES_surfaceless_context. This would avoid the
116// need to create a dummy EGLsurface in case we render to client API targets.
117class GL_EXPORT SurfacelessEGL : public GLSurfaceEGL {
118 public:
119  explicit SurfacelessEGL(const gfx::Size& size);
120
121  // Implement GLSurface.
122  virtual EGLConfig GetConfig() OVERRIDE;
123  virtual bool Initialize() OVERRIDE;
124  virtual void Destroy() OVERRIDE;
125  virtual bool IsOffscreen() OVERRIDE;
126  virtual bool SwapBuffers() OVERRIDE;
127  virtual gfx::Size GetSize() OVERRIDE;
128  virtual bool Resize(const gfx::Size& size) OVERRIDE;
129  virtual EGLSurface GetHandle() OVERRIDE;
130  virtual void* GetShareHandle() OVERRIDE;
131
132 protected:
133  virtual ~SurfacelessEGL();
134
135 private:
136  gfx::Size size_;
137  DISALLOW_COPY_AND_ASSIGN(SurfacelessEGL);
138};
139
140}  // namespace gfx
141
142#endif  // UI_GL_GL_SURFACE_EGL_H_
143