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/*
* Copyright (C) 2012 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "GLXContext.h"
#if USE(ACCELERATED_COMPOSITING) && HAVE(GLX)
namespace WebCore {
typedef GLXContext (*GLXCREATECONTEXTATTRIBSARBPROC)(Display*, GLXFBConfig, GLXContext, Bool, const int*);
static GLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB = 0;
static int Attribs[] = {
GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
GLX_LOSE_CONTEXT_ON_RESET_ARB,
0 };
static void initializeARBExtensions()
{
static bool initialized = false;
if (initialized)
return;
initialized = true;
glXCreateContextAttribsARB = reinterpret_cast<GLXCREATECONTEXTATTRIBSARBPROC>(glXGetProcAddress(reinterpret_cast<const GLubyte*>("glXCreateContextAttribsARB")));
}
GLXOffScreenContext::GLXOffScreenContext()
: GLPlatformContext()
, m_display(0)
{
}
bool GLXOffScreenContext::initialize(GLPlatformSurface* surface)
{
if (!surface)
return false;
m_display = surface->sharedDisplay();
if (!m_display)
return false;
GLXFBConfig config = surface->configuration();
if (config) {
initializeARBExtensions();
if (glXCreateContextAttribsARB)
m_contextHandle = glXCreateContextAttribsARB(m_display, config, 0, true, Attribs);
if (m_contextHandle)
m_resetLostContext = true;
else
m_contextHandle = glXCreateNewContext(m_display, config, GLX_RGBA_TYPE, 0, true);
if (m_contextHandle)
return true;
}
return false;
}
GLXOffScreenContext::~GLXOffScreenContext()
{
}
bool GLXOffScreenContext::isCurrentContext() const
{
return m_contextHandle == glXGetCurrentContext();
}
bool GLXOffScreenContext::platformMakeCurrent(GLPlatformSurface* surface)
{
return glXMakeCurrent(surface->sharedDisplay(), surface->handle(), m_contextHandle);
}
void GLXOffScreenContext::platformReleaseCurrent()
{
glXMakeCurrent(m_display, 0, 0);
}
void GLXOffScreenContext::freeResources()
{
if (m_contextHandle)
glXDestroyContext(m_display, m_contextHandle);
m_contextHandle = 0;
m_display = 0;
}
void GLXOffScreenContext::destroy()
{
freeResources();
GLPlatformContext::destroy();
}
}
#endif
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