1 /*
2 * Copyright 2018 Emmanuele Bassi
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 /**
25 * @file epoxy_api.c
26 *
27 * Tests the Epoxy API using EGL.
28 */
29
30 #ifdef __sun
31 #define __EXTENSIONS__
32 #else
33 #define _GNU_SOURCE
34 #endif
35 #include <stdio.h>
36 #include <string.h>
37 #include <stdlib.h>
38 #include <assert.h>
39 #include <err.h>
40 #include "epoxy/gl.h"
41 #include "epoxy/egl.h"
42
43 #include "egl_common.h"
44
45 static bool
make_egl_current_and_test(EGLDisplay * dpy,EGLContext ctx)46 make_egl_current_and_test(EGLDisplay *dpy, EGLContext ctx)
47 {
48 const char *string;
49 GLuint shader;
50 bool pass = true;
51
52 eglMakeCurrent(dpy, NULL, NULL, ctx);
53
54 if (!epoxy_is_desktop_gl()) {
55 fputs("Claimed to be desktop\n", stderr);
56 pass = false;
57 }
58
59 if (epoxy_gl_version() < 20) {
60 fprintf(stderr, "Claimed to be GL version %d\n",
61 epoxy_gl_version());
62 pass = false;
63 }
64
65 if (epoxy_glsl_version() < 100) {
66 fprintf(stderr, "Claimed to have GLSL version %d\n",
67 epoxy_glsl_version());
68 pass = false;
69 }
70
71 string = (const char *)glGetString(GL_VERSION);
72 printf("GL version: %s - Epoxy: %d\n", string, epoxy_gl_version());
73
74 string = (const char *)glGetString(GL_SHADING_LANGUAGE_VERSION);
75 printf("GLSL version: %s - Epoxy: %d\n", string, epoxy_glsl_version());
76
77 shader = glCreateShader(GL_FRAGMENT_SHADER);
78 pass = glIsShader(shader);
79
80 return pass;
81 }
82
83 static void
init_egl(EGLDisplay * dpy,EGLContext * out_ctx)84 init_egl(EGLDisplay *dpy, EGLContext *out_ctx)
85 {
86 static const EGLint config_attribs[] = {
87 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
88 EGL_RED_SIZE, 1,
89 EGL_GREEN_SIZE, 1,
90 EGL_BLUE_SIZE, 1,
91 EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
92 EGL_NONE
93 };
94 static const EGLint context_attribs[] = {
95 EGL_CONTEXT_CLIENT_VERSION, 2,
96 EGL_NONE
97 };
98 EGLContext ctx;
99 EGLConfig cfg;
100 EGLint count;
101
102 if (!epoxy_has_egl_extension(dpy, "EGL_KHR_surfaceless_context"))
103 errx(77, "Test requires EGL_KHR_surfaceless_context");
104
105 if (!eglBindAPI(EGL_OPENGL_API))
106 errx(77, "Couldn't initialize EGL with desktop GL\n");
107
108 if (!eglChooseConfig(dpy, config_attribs, &cfg, 1, &count))
109 errx(77, "Couldn't get an EGLConfig\n");
110
111 ctx = eglCreateContext(dpy, cfg, NULL, context_attribs);
112 if (!ctx)
113 errx(77, "Couldn't create a GL context\n");
114
115 *out_ctx = ctx;
116 }
117
118 int
main(int argc,char ** argv)119 main(int argc, char **argv)
120 {
121 bool pass = true;
122
123 EGLContext egl_ctx;
124 EGLDisplay *dpy = get_egl_display_or_skip();
125 const char *extensions = eglQueryString(dpy, EGL_EXTENSIONS);
126 char *first_space;
127 char *an_extension;
128
129 /* We don't have any extensions guaranteed by the ABI, so for the
130 * touch test we just check if the first one is reported to be there.
131 */
132 first_space = strstr(extensions, " ");
133 if (first_space) {
134 an_extension = strndup(extensions, first_space - extensions);
135 } else {
136 an_extension = strdup(extensions);
137 }
138
139 if (!epoxy_extension_in_string(extensions, an_extension))
140 errx(1, "Implementation reported absence of %s", an_extension);
141
142 free(an_extension);
143
144 init_egl(dpy, &egl_ctx);
145 pass = make_egl_current_and_test(dpy, egl_ctx);
146
147 return pass != true;
148 }
149