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/*
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include "dispatch_common.h"
int
epoxy_conservative_egl_version(void)
{
EGLDisplay dpy = eglGetCurrentDisplay();
if (!dpy)
return 14;
return epoxy_egl_version(dpy);
}
/**
* @brief Returns the version of OpenGL we are using
*
* The version is encoded as:
*
* ```
*
* version = major * 10 + minor
*
* ```
*
* So it can be easily used for version comparisons.
*
* @param The EGL display
*
* @return The encoded version of EGL we are using
*
* @see epoxy_gl_version()
*/
int
epoxy_egl_version(EGLDisplay dpy)
{
int major, minor;
const char *version_string;
int ret;
version_string = eglQueryString(dpy, EGL_VERSION);
if (!version_string)
return 0;
ret = sscanf(version_string, "%d.%d", &major, &minor);
assert(ret == 2);
return major * 10 + minor;
}
bool
epoxy_conservative_has_egl_extension(const char *ext)
{
return epoxy_has_egl_extension(eglGetCurrentDisplay(), ext);
}
/**
* @brief Returns true if the given EGL extension is supported in the current context.
*
* @param dpy The EGL display
* @param extension The name of the EGL extension
*
* @return `true` if the extension is available
*
* @see epoxy_has_gl_extension()
* @see epoxy_has_glx_extension()
*/
bool
epoxy_has_egl_extension(EGLDisplay dpy, const char *ext)
{
return epoxy_extension_in_string(eglQueryString(dpy, EGL_EXTENSIONS), ext) || epoxy_extension_in_string(eglQueryString(NULL, EGL_EXTENSIONS), ext);
}
/**
* @brief Checks whether EGL is available.
*
* @return `true` if EGL is available
*
* @newin{1,4}
*/
bool
epoxy_has_egl(void)
{
#if !PLATFORM_HAS_EGL
return false;
#else
if (epoxy_load_egl(false, true)) {
EGLDisplay* (* pf_eglGetCurrentDisplay) (void);
pf_eglGetCurrentDisplay = epoxy_conservative_egl_dlsym("eglGetCurrentDisplay", false);
if (pf_eglGetCurrentDisplay)
return true;
}
return false;
#endif /* PLATFORM_HAS_EGL */
}
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