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/*
* Copyright (C) 2013 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 "EGLHelper.h"
#if USE(EGL)
#include "PlatformDisplay.h"
#include <opengl/GLPlatformContext.h>
namespace WebCore {
static PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR = 0;
static PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR = 0;
static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC eglImageTargetTexture2DOES = 0;
EGLDisplay EGLHelper::eglDisplay()
{
PlatformDisplay::sharedDisplay().eglDisplay();
}
EGLDisplay EGLHelper::currentDisplay()
{
EGLDisplay display = eglGetCurrentDisplay();
if (display == EGL_NO_DISPLAY)
display = EGLHelper::eglDisplay();
return display;
}
void EGLHelper::resolveEGLBindings()
{
static bool initialized = false;
if (initialized)
return;
initialized = true;
EGLDisplay display = currentDisplay();
if (display == EGL_NO_DISPLAY)
return;
if (GLPlatformContext::supportsEGLExtension(display, "EGL_KHR_image") && GLPlatformContext::supportsEGLExtension(display, "EGL_KHR_image_pixmap") && GLPlatformContext::supportsGLExtension("GL_OES_EGL_image")) {
eglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC) eglGetProcAddress("eglCreateImageKHR");
eglDestroyImageKHR = (PFNEGLDESTROYIMAGEKHRPROC) eglGetProcAddress("eglDestroyImageKHR");
eglImageTargetTexture2DOES = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)eglGetProcAddress("glEGLImageTargetTexture2DOES");
}
}
void EGLHelper::createEGLImage(EGLImageKHR* image, GLenum target, const EGLClientBuffer clientBuffer, const EGLint attributes[])
{
EGLDisplay display = currentDisplay();
if (display == EGL_NO_DISPLAY)
return;
EGLImageKHR tempHandle = EGL_NO_IMAGE_KHR;
if (eglCreateImageKHR && eglImageTargetTexture2DOES && eglDestroyImageKHR)
tempHandle = eglCreateImageKHR(display, EGL_NO_CONTEXT, target, clientBuffer, attributes);
*image = tempHandle;
}
void EGLHelper::destroyEGLImage(const EGLImageKHR image)
{
EGLDisplay display = currentDisplay();
if (display == EGL_NO_DISPLAY)
return;
if (eglDestroyImageKHR)
eglDestroyImageKHR(display, image);
}
void EGLHelper::imageTargetTexture2DOES(const EGLImageKHR image)
{
eglImageTargetTexture2DOES(GL_TEXTURE_2D, static_cast<GLeglImageOES>(image));
}
}
#endif
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