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/*
* Copyright (C) 2012 Igalia, S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "WindowGLContext.h"
#include <GL/glx.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <wtf/OwnPtr.h>
namespace WebCore {
PassOwnPtr<WindowGLContext> WindowGLContext::createContextWithGdkWindow(GdkWindow* window)
{
OwnPtr<WindowGLContext> context = adoptPtr(new WindowGLContext(window));
if (!context->m_context)
return nullptr;
return context.release();
}
WindowGLContext::WindowGLContext(GdkWindow* window)
: m_window(window)
, m_context(0)
, m_display(0)
, m_needToCloseDisplay(0)
{
GdkDisplay* gdkDisplay = gdk_window_get_display(m_window);
if (gdkDisplay)
m_display = GDK_DISPLAY_XDISPLAY(gdkDisplay);
else {
m_display = XOpenDisplay(0);
m_needToCloseDisplay = true;
}
XWindowAttributes attributes;
if (!XGetWindowAttributes(m_display, GDK_WINDOW_XID(m_window), &attributes))
return;
XVisualInfo visualInfo;
visualInfo.visualid = XVisualIDFromVisual(attributes.visual);
int numReturned = 0;
XVisualInfo* visualInfoList = XGetVisualInfo(m_display, VisualIDMask, &visualInfo, &numReturned);
m_context = glXCreateContext(m_display, visualInfoList, 0, True);
XFree(visualInfoList);
}
WindowGLContext::~WindowGLContext()
{
if (!m_context)
return;
glXMakeCurrent(m_display, None, None);
glXDestroyContext(m_display, m_context);
if (m_needToCloseDisplay)
XCloseDisplay(m_display);
}
void WindowGLContext::startDrawing()
{
glXMakeCurrent(m_display, GDK_WINDOW_XID(m_window), m_context);
}
void WindowGLContext::finishDrawing()
{
glXSwapBuffers(m_display, GDK_WINDOW_XID(m_window));
}
} // namespace WebCore
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