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