1*706d0b42SXin Li /*
2*706d0b42SXin Li * Copyright © 2013 Intel Corporation
3*706d0b42SXin Li *
4*706d0b42SXin Li * Permission is hereby granted, free of charge, to any person obtaining a
5*706d0b42SXin Li * copy of this software and associated documentation files (the "Software"),
6*706d0b42SXin Li * to deal in the Software without restriction, including without limitation
7*706d0b42SXin Li * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8*706d0b42SXin Li * and/or sell copies of the Software, and to permit persons to whom the
9*706d0b42SXin Li * Software is furnished to do so, subject to the following conditions:
10*706d0b42SXin Li *
11*706d0b42SXin Li * The above copyright notice and this permission notice (including the next
12*706d0b42SXin Li * paragraph) shall be included in all copies or substantial portions of the
13*706d0b42SXin Li * Software.
14*706d0b42SXin Li *
15*706d0b42SXin Li * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16*706d0b42SXin Li * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17*706d0b42SXin Li * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18*706d0b42SXin Li * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19*706d0b42SXin Li * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20*706d0b42SXin Li * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21*706d0b42SXin Li * IN THE SOFTWARE.
22*706d0b42SXin Li */
23*706d0b42SXin Li
24*706d0b42SXin Li #include <assert.h>
25*706d0b42SXin Li #include <string.h>
26*706d0b42SXin Li #include <stdio.h>
27*706d0b42SXin Li
28*706d0b42SXin Li #include "dispatch_common.h"
29*706d0b42SXin Li
30*706d0b42SXin Li int
epoxy_conservative_egl_version(void)31*706d0b42SXin Li epoxy_conservative_egl_version(void)
32*706d0b42SXin Li {
33*706d0b42SXin Li EGLDisplay dpy = eglGetCurrentDisplay();
34*706d0b42SXin Li
35*706d0b42SXin Li if (!dpy)
36*706d0b42SXin Li return 14;
37*706d0b42SXin Li
38*706d0b42SXin Li return epoxy_egl_version(dpy);
39*706d0b42SXin Li }
40*706d0b42SXin Li
41*706d0b42SXin Li /**
42*706d0b42SXin Li * @brief Returns the version of OpenGL we are using
43*706d0b42SXin Li *
44*706d0b42SXin Li * The version is encoded as:
45*706d0b42SXin Li *
46*706d0b42SXin Li * ```
47*706d0b42SXin Li *
48*706d0b42SXin Li * version = major * 10 + minor
49*706d0b42SXin Li *
50*706d0b42SXin Li * ```
51*706d0b42SXin Li *
52*706d0b42SXin Li * So it can be easily used for version comparisons.
53*706d0b42SXin Li *
54*706d0b42SXin Li * @param The EGL display
55*706d0b42SXin Li *
56*706d0b42SXin Li * @return The encoded version of EGL we are using
57*706d0b42SXin Li *
58*706d0b42SXin Li * @see epoxy_gl_version()
59*706d0b42SXin Li */
60*706d0b42SXin Li int
epoxy_egl_version(EGLDisplay dpy)61*706d0b42SXin Li epoxy_egl_version(EGLDisplay dpy)
62*706d0b42SXin Li {
63*706d0b42SXin Li int major, minor;
64*706d0b42SXin Li const char *version_string;
65*706d0b42SXin Li int ret;
66*706d0b42SXin Li
67*706d0b42SXin Li version_string = eglQueryString(dpy, EGL_VERSION);
68*706d0b42SXin Li if (!version_string)
69*706d0b42SXin Li return 0;
70*706d0b42SXin Li
71*706d0b42SXin Li ret = sscanf(version_string, "%d.%d", &major, &minor);
72*706d0b42SXin Li assert(ret == 2);
73*706d0b42SXin Li return major * 10 + minor;
74*706d0b42SXin Li }
75*706d0b42SXin Li
76*706d0b42SXin Li bool
epoxy_conservative_has_egl_extension(const char * ext)77*706d0b42SXin Li epoxy_conservative_has_egl_extension(const char *ext)
78*706d0b42SXin Li {
79*706d0b42SXin Li return epoxy_has_egl_extension(eglGetCurrentDisplay(), ext);
80*706d0b42SXin Li }
81*706d0b42SXin Li
82*706d0b42SXin Li /**
83*706d0b42SXin Li * @brief Returns true if the given EGL extension is supported in the current context.
84*706d0b42SXin Li *
85*706d0b42SXin Li * @param dpy The EGL display
86*706d0b42SXin Li * @param extension The name of the EGL extension
87*706d0b42SXin Li *
88*706d0b42SXin Li * @return `true` if the extension is available
89*706d0b42SXin Li *
90*706d0b42SXin Li * @see epoxy_has_gl_extension()
91*706d0b42SXin Li * @see epoxy_has_glx_extension()
92*706d0b42SXin Li */
93*706d0b42SXin Li bool
epoxy_has_egl_extension(EGLDisplay dpy,const char * ext)94*706d0b42SXin Li epoxy_has_egl_extension(EGLDisplay dpy, const char *ext)
95*706d0b42SXin Li {
96*706d0b42SXin Li return epoxy_extension_in_string(eglQueryString(dpy, EGL_EXTENSIONS), ext) || epoxy_extension_in_string(eglQueryString(NULL, EGL_EXTENSIONS), ext);
97*706d0b42SXin Li }
98*706d0b42SXin Li
99*706d0b42SXin Li /**
100*706d0b42SXin Li * @brief Checks whether EGL is available.
101*706d0b42SXin Li *
102*706d0b42SXin Li * @return `true` if EGL is available
103*706d0b42SXin Li *
104*706d0b42SXin Li * @newin{1,4}
105*706d0b42SXin Li */
106*706d0b42SXin Li bool
epoxy_has_egl(void)107*706d0b42SXin Li epoxy_has_egl(void)
108*706d0b42SXin Li {
109*706d0b42SXin Li #if !PLATFORM_HAS_EGL
110*706d0b42SXin Li return false;
111*706d0b42SXin Li #else
112*706d0b42SXin Li if (epoxy_load_egl(false, true)) {
113*706d0b42SXin Li EGLDisplay* (* pf_eglGetCurrentDisplay) (void);
114*706d0b42SXin Li
115*706d0b42SXin Li pf_eglGetCurrentDisplay = epoxy_conservative_egl_dlsym("eglGetCurrentDisplay", false);
116*706d0b42SXin Li if (pf_eglGetCurrentDisplay)
117*706d0b42SXin Li return true;
118*706d0b42SXin Li }
119*706d0b42SXin Li
120*706d0b42SXin Li return false;
121*706d0b42SXin Li #endif /* PLATFORM_HAS_EGL */
122*706d0b42SXin Li }
123