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_SURFACE_EGL_H_
6 #define UI_GL_GL_SURFACE_EGL_H_
14 #include "base/compiler_specific.h"
15 #include "base/time/time.h"
16 #include "ui/gfx/size.h"
17 #include "ui/gfx/vsync_provider.h"
18 #include "ui/gl/gl_bindings.h"
19 #include "ui/gl/gl_surface.h"
23 // Get default EGL display for GLSurfaceEGL (differs by platform).
24 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay();
26 // Interface for EGL surface.
27 class GL_EXPORT GLSurfaceEGL : public GLSurface {
31 // Implement GLSurface.
32 EGLDisplay GetDisplay() override;
34 static bool InitializeOneOff();
35 static EGLDisplay GetHardwareDisplay();
36 static EGLNativeDisplayType GetNativeDisplay();
38 // These aren't particularly tied to surfaces, but since we already
39 // have the static InitializeOneOff here, it's easiest to reuse its
40 // initialization guards.
41 static const char* GetEGLExtensions();
42 static bool HasEGLExtension(const char* name);
43 static bool IsCreateContextRobustnessSupported();
44 static bool IsEGLSurfacelessContextSupported();
47 ~GLSurfaceEGL() override;
51 static EGLDisplay GetPlatformDisplay(EGLNativeDisplayType native_display);
54 DISALLOW_COPY_AND_ASSIGN(GLSurfaceEGL);
57 // Encapsulates an EGL surface bound to a view.
58 class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
60 explicit NativeViewGLSurfaceEGL(EGLNativeWindowType window);
62 // Implement GLSurface.
63 EGLConfig GetConfig() override;
64 bool Initialize() override;
65 void Destroy() override;
66 bool Resize(const gfx::Size& size) override;
67 bool Recreate() override;
68 bool IsOffscreen() override;
69 bool SwapBuffers() override;
70 gfx::Size GetSize() override;
71 EGLSurface GetHandle() override;
72 bool SupportsPostSubBuffer() override;
73 bool PostSubBuffer(int x, int y, int width, int height) override;
74 VSyncProvider* GetVSyncProvider() override;
76 // Create a NativeViewGLSurfaceEGL with an externally provided VSyncProvider.
77 // Takes ownership of the VSyncProvider.
78 virtual bool Initialize(scoped_ptr<VSyncProvider> sync_provider);
81 ~NativeViewGLSurfaceEGL() override;
83 EGLNativeWindowType window_;
85 virtual void SetSwapInterval(int interval) override;
89 bool supports_post_sub_buffer_;
93 scoped_ptr<VSyncProvider> vsync_provider_;
96 unsigned int swap_generation_;
97 static unsigned int current_swap_generation_;
99 DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceEGL);
102 // Encapsulates a pbuffer EGL surface.
103 class GL_EXPORT PbufferGLSurfaceEGL : public GLSurfaceEGL {
105 explicit PbufferGLSurfaceEGL(const gfx::Size& size);
107 // Implement GLSurface.
108 EGLConfig GetConfig() override;
109 bool Initialize() override;
110 void Destroy() override;
111 bool IsOffscreen() override;
112 bool SwapBuffers() override;
113 gfx::Size GetSize() override;
114 bool Resize(const gfx::Size& size) override;
115 EGLSurface GetHandle() override;
116 void* GetShareHandle() override;
119 ~PbufferGLSurfaceEGL() override;
125 DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceEGL);
128 // SurfacelessEGL is used as Offscreen surface when platform supports
129 // KHR_surfaceless_context and GL_OES_surfaceless_context. This would avoid the
130 // need to create a dummy EGLsurface in case we render to client API targets.
131 class GL_EXPORT SurfacelessEGL : public GLSurfaceEGL {
133 explicit SurfacelessEGL(const gfx::Size& size);
135 // Implement GLSurface.
136 EGLConfig GetConfig() override;
137 bool Initialize() override;
138 void Destroy() override;
139 bool IsOffscreen() override;
140 bool IsSurfaceless() const override;
141 bool SwapBuffers() override;
142 gfx::Size GetSize() override;
143 bool Resize(const gfx::Size& size) override;
144 EGLSurface GetHandle() override;
145 void* GetShareHandle() override;
148 ~SurfacelessEGL() override;
152 DISALLOW_COPY_AND_ASSIGN(SurfacelessEGL);
157 #endif // UI_GL_GL_SURFACE_EGL_H_