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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_GLX_H_
#define UI_GL_GL_SURFACE_GLX_H_
#include <stdint.h>
#include <memory>
#include <string>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/x/event.h"
#include "ui/gfx/x/glx.h"
#include "ui/gl/gl_export.h"
#include "ui/gl/gl_surface.h"
using GLXFBConfig = struct __GLXFBConfigRec*;
namespace gfx {
class VSyncProvider;
}
namespace gl {
class GLSurfacePresentationHelper;
// Base class for GLX surfaces.
class GL_EXPORT GLSurfaceGLX : public GLSurface {
public:
GLSurfaceGLX();
static bool InitializeOneOff();
static bool InitializeExtensionSettingsOneOff();
static void ShutdownOneOff();
// 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 std::string QueryGLXExtensions();
static const char* GetGLXExtensions();
static bool HasGLXExtension(const char* name);
static bool IsCreateContextSupported();
static bool IsCreateContextRobustnessSupported();
static bool IsRobustnessVideoMemoryPurgeSupported();
static bool IsCreateContextProfileSupported();
static bool IsCreateContextES2ProfileSupported();
static bool IsTextureFromPixmapSupported();
static bool IsOMLSyncControlSupported();
static bool IsEXTSwapControlSupported();
static bool IsMESASwapControlSupported();
void* GetDisplay() override;
// Get the FB config that the surface was created with or NULL if it is not
// a GLX drawable.
void* GetConfig() override = 0;
protected:
~GLSurfaceGLX() override;
private:
DISALLOW_COPY_AND_ASSIGN(GLSurfaceGLX);
static bool initialized_;
};
// A surface used to render to a view.
class GL_EXPORT NativeViewGLSurfaceGLX : public GLSurfaceGLX {
public:
explicit NativeViewGLSurfaceGLX(gfx::AcceleratedWidget window);
// Implement GLSurfaceGLX.
bool Initialize(GLSurfaceFormat format) override;
void Destroy() override;
bool Resize(const gfx::Size& size,
float scale_factor,
const gfx::ColorSpace& color_space,
bool has_alpha) override;
bool IsOffscreen() override;
gfx::SwapResult SwapBuffers(PresentationCallback callback) override;
gfx::Size GetSize() override;
void* GetHandle() override;
bool SupportsPostSubBuffer() override;
void* GetConfig() override;
GLSurfaceFormat GetFormat() override;
gfx::SwapResult PostSubBuffer(int x,
int y,
int width,
int height,
PresentationCallback callback) override;
bool OnMakeCurrent(GLContext* context) override;
gfx::VSyncProvider* GetVSyncProvider() override;
void SetVSyncEnabled(bool enabled) override;
protected:
~NativeViewGLSurfaceGLX() override;
// Handle registering and unregistering for Expose events.
virtual void RegisterEvents() = 0;
virtual void UnregisterEvents() = 0;
// Forwards Expose event to child window.
void ForwardExposeEvent(x11::Event* xevent);
// Checks if event is Expose for child window.
bool CanHandleEvent(x11::Event* xevent);
gfx::AcceleratedWidget window() const {
return static_cast<gfx::AcceleratedWidget>(window_);
}
private:
// The handle for the drawable to make current or swap.
uint32_t GetDrawableHandle() const;
// Window passed in at creation. Always valid.
gfx::AcceleratedWidget parent_window_;
// Child window, used to control resizes so that they're in-order with GL.
x11::Window window_;
// GLXDrawable for the window.
x11::Glx::Window glx_window_;
GLXFBConfig config_;
gfx::Size size_;
bool has_swapped_buffers_;
std::unique_ptr<gfx::VSyncProvider> vsync_provider_;
std::unique_ptr<GLSurfacePresentationHelper> presentation_helper_;
DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceGLX);
};
// A surface used to render to an offscreen pbuffer.
class GL_EXPORT UnmappedNativeViewGLSurfaceGLX : public GLSurfaceGLX {
public:
explicit UnmappedNativeViewGLSurfaceGLX(const gfx::Size& size);
// Implement GLSurfaceGLX.
bool Initialize(GLSurfaceFormat format) override;
void Destroy() override;
bool IsOffscreen() override;
gfx::SwapResult SwapBuffers(PresentationCallback callback) override;
gfx::Size GetSize() override;
void* GetHandle() override;
void* GetConfig() override;
GLSurfaceFormat GetFormat() override;
protected:
~UnmappedNativeViewGLSurfaceGLX() override;
private:
gfx::Size size_;
GLXFBConfig config_;
// Unmapped dummy window, used to provide a compatible surface.
x11::Window window_;
// GLXDrawable for the window.
x11::Glx::Window glx_window_;
DISALLOW_COPY_AND_ASSIGN(UnmappedNativeViewGLSurfaceGLX);
};
} // namespace gl
#endif // UI_GL_GL_SURFACE_GLX_H_
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