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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GL_GL_SURFACE_EGL_H_
#define UI_GL_GL_SURFACE_EGL_H_
#if defined(OS_WIN)
#include <windows.h>
#endif
#include <string>
#include "base/compiler_specific.h"
#include "base/time/time.h"
#include "ui/gfx/size.h"
#include "ui/gfx/vsync_provider.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_surface.h"
namespace gfx {
// Get default EGL display for GLSurfaceEGL (differs by platform).
EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay();
// Interface for EGL surface.
class GL_EXPORT GLSurfaceEGL : public GLSurface {
public:
GLSurfaceEGL();
// Implement GLSurface.
EGLDisplay GetDisplay() override;
static bool InitializeOneOff();
static EGLDisplay GetHardwareDisplay();
static EGLNativeDisplayType GetNativeDisplay();
// These aren't particularly tied to surfaces, but since we already
// have the static InitializeOneOff here, it's easiest to reuse its
// initialization guards.
static const char* GetEGLExtensions();
static bool HasEGLExtension(const char* name);
static bool IsCreateContextRobustnessSupported();
static bool IsEGLSurfacelessContextSupported();
protected:
~GLSurfaceEGL() override;
private:
#if defined(OS_WIN)
static EGLDisplay GetPlatformDisplay(EGLNativeDisplayType native_display);
#endif
DISALLOW_COPY_AND_ASSIGN(GLSurfaceEGL);
};
// Encapsulates an EGL surface bound to a view.
class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
public:
explicit NativeViewGLSurfaceEGL(EGLNativeWindowType window);
// Implement GLSurface.
EGLConfig GetConfig() override;
bool Initialize() override;
void Destroy() override;
bool Resize(const gfx::Size& size) override;
bool Recreate() override;
bool IsOffscreen() override;
bool SwapBuffers() override;
gfx::Size GetSize() override;
EGLSurface GetHandle() override;
bool SupportsPostSubBuffer() override;
bool PostSubBuffer(int x, int y, int width, int height) override;
VSyncProvider* GetVSyncProvider() override;
// Create a NativeViewGLSurfaceEGL with an externally provided VSyncProvider.
// Takes ownership of the VSyncProvider.
virtual bool Initialize(scoped_ptr<VSyncProvider> sync_provider);
protected:
~NativeViewGLSurfaceEGL() override;
EGLNativeWindowType window_;
virtual void SetSwapInterval(int interval) override;
private:
EGLSurface surface_;
bool supports_post_sub_buffer_;
EGLConfig config_;
gfx::Size size_;
scoped_ptr<VSyncProvider> vsync_provider_;
int swap_interval_;
unsigned int swap_generation_;
static unsigned int current_swap_generation_;
DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceEGL);
};
// Encapsulates a pbuffer EGL surface.
class GL_EXPORT PbufferGLSurfaceEGL : public GLSurfaceEGL {
public:
explicit PbufferGLSurfaceEGL(const gfx::Size& size);
// Implement GLSurface.
EGLConfig GetConfig() override;
bool Initialize() override;
void Destroy() override;
bool IsOffscreen() override;
bool SwapBuffers() override;
gfx::Size GetSize() override;
bool Resize(const gfx::Size& size) override;
EGLSurface GetHandle() override;
void* GetShareHandle() override;
protected:
~PbufferGLSurfaceEGL() override;
private:
gfx::Size size_;
EGLSurface surface_;
DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceEGL);
};
// SurfacelessEGL is used as Offscreen surface when platform supports
// KHR_surfaceless_context and GL_OES_surfaceless_context. This would avoid the
// need to create a dummy EGLsurface in case we render to client API targets.
class GL_EXPORT SurfacelessEGL : public GLSurfaceEGL {
public:
explicit SurfacelessEGL(const gfx::Size& size);
// Implement GLSurface.
EGLConfig GetConfig() override;
bool Initialize() override;
void Destroy() override;
bool IsOffscreen() override;
bool IsSurfaceless() const override;
bool SwapBuffers() override;
gfx::Size GetSize() override;
bool Resize(const gfx::Size& size) override;
EGLSurface GetHandle() override;
void* GetShareHandle() override;
protected:
~SurfacelessEGL() override;
private:
gfx::Size size_;
DISALLOW_COPY_AND_ASSIGN(SurfacelessEGL);
};
} // namespace gfx
#endif // UI_GL_GL_SURFACE_EGL_H_
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