Eric Anholt | dbf940d | 2014-01-30 17:52:40 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2014 Intel Corporation |
| 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 egl_without_glx.c |
| 26 | * |
Eric Anholt | f15c169 | 2014-03-17 09:12:18 -0700 | [diff] [blame] | 27 | * Tries to test operation of the library on a GL stack with EGL and |
| 28 | * GLES but no GLX or desktop GL (such as Arm's Mali GLES3 drivers). |
| 29 | * This test is varied by the GLES_VERSION defined at compile time to |
| 30 | * test either a GLES1-only or a GLES2-only system. |
Eric Anholt | dbf940d | 2014-01-30 17:52:40 -0800 | [diff] [blame] | 31 | */ |
| 32 | |
| 33 | #define _GNU_SOURCE |
| 34 | |
| 35 | #include <stdio.h> |
| 36 | #include <string.h> |
| 37 | #include <stdlib.h> |
| 38 | #include <assert.h> |
| 39 | #include <err.h> |
| 40 | #include <dlfcn.h> |
| 41 | #include "epoxy/gl.h" |
| 42 | #include "epoxy/egl.h" |
| 43 | |
| 44 | #include "egl_common.h" |
| 45 | |
| 46 | /** |
| 47 | * Wraps the system dlopen(), which libepoxy will end up calling when |
| 48 | * it tries to dlopen() the API libraries, and errors out the |
| 49 | * libraries we're trying to simulate not being installed on the |
| 50 | * system. |
| 51 | */ |
| 52 | void * |
| 53 | dlopen(const char *filename, int flag) |
| 54 | { |
| 55 | void * (*dlopen_unwrapped)(const char *filename, int flag); |
| 56 | |
| 57 | if (!strcmp(filename, "libGL.so.1")) |
| 58 | return NULL; |
| 59 | #if GLES_VERSION == 2 |
| 60 | if (!strcmp(filename, "libGLESv1_CM.so.1")) |
| 61 | return NULL; |
| 62 | #else |
| 63 | if (!strcmp(filename, "libGLESv2.so.2")) |
| 64 | return NULL; |
| 65 | #endif |
| 66 | |
| 67 | dlopen_unwrapped = dlsym(RTLD_NEXT, "dlopen"); |
| 68 | assert(dlopen_unwrapped); |
| 69 | |
| 70 | return dlopen_unwrapped(filename, flag); |
| 71 | } |
| 72 | |
Eric Anholt | f15c169 | 2014-03-17 09:12:18 -0700 | [diff] [blame] | 73 | |
| 74 | static EGLenum last_api; |
| 75 | static EGLenum extra_error = EGL_SUCCESS; |
| 76 | |
| 77 | /** |
| 78 | * Override of the real libEGL's eglBindAPI to simulate the target |
| 79 | * system's eglBindAPI. |
| 80 | */ |
| 81 | static EGLBoolean |
| 82 | override_eglBindAPI(EGLenum api) |
| 83 | { |
| 84 | void *egl = dlopen("libEGL.so.1", RTLD_LAZY | RTLD_LOCAL); |
| 85 | EGLBoolean (*real_eglBindAPI)(EGLenum api) = dlsym(egl, "eglBindAPI"); |
| 86 | |
| 87 | last_api = api; |
| 88 | |
| 89 | if (api == EGL_OPENGL_API) { |
| 90 | extra_error = EGL_BAD_PARAMETER; |
| 91 | return EGL_FALSE; |
| 92 | } |
| 93 | |
| 94 | assert(real_eglBindAPI); |
| 95 | return real_eglBindAPI(api); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Override of the real libEGL's eglGetError() to feed back the error |
| 100 | * that might have been generated by override_eglBindAPI(). |
| 101 | */ |
| 102 | static EGLint |
| 103 | override_eglGetError(void) |
| 104 | { |
| 105 | void *egl = dlopen("libEGL.so.1", RTLD_LAZY | RTLD_LOCAL); |
| 106 | EGLint (*real_eglGetError)(void) = dlsym(egl, "eglGetError"); |
| 107 | |
| 108 | if (extra_error != EGL_SUCCESS) { |
| 109 | EGLenum error = extra_error; |
| 110 | extra_error = EGL_SUCCESS; |
| 111 | return error; |
| 112 | } |
| 113 | |
| 114 | assert(real_eglGetError); |
| 115 | return real_eglGetError(); |
| 116 | } |
| 117 | |
Eric Anholt | dbf940d | 2014-01-30 17:52:40 -0800 | [diff] [blame] | 118 | int |
| 119 | main(int argc, char **argv) |
| 120 | { |
| 121 | bool pass = true; |
| 122 | EGLDisplay *dpy = get_egl_display_or_skip(); |
| 123 | EGLint context_attribs[] = { |
| 124 | EGL_CONTEXT_CLIENT_VERSION, GLES_VERSION, |
| 125 | EGL_NONE |
| 126 | }; |
| 127 | EGLConfig cfg; |
| 128 | EGLint config_attribs[] = { |
| 129 | EGL_SURFACE_TYPE, EGL_WINDOW_BIT, |
| 130 | EGL_RED_SIZE, 1, |
| 131 | EGL_GREEN_SIZE, 1, |
| 132 | EGL_BLUE_SIZE, 1, |
| 133 | EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, |
| 134 | EGL_NONE |
| 135 | }; |
| 136 | EGLint count; |
| 137 | EGLContext ctx; |
| 138 | const unsigned char *string; |
| 139 | |
Eric Anholt | f15c169 | 2014-03-17 09:12:18 -0700 | [diff] [blame] | 140 | epoxy_eglBindAPI = override_eglBindAPI; |
| 141 | epoxy_eglGetError = override_eglGetError; |
| 142 | |
Eric Anholt | dbf940d | 2014-01-30 17:52:40 -0800 | [diff] [blame] | 143 | if (!epoxy_has_egl_extension(dpy, "EGL_KHR_surfaceless_context")) |
| 144 | errx(77, "Test requires EGL_KHR_surfaceless_context"); |
| 145 | |
| 146 | eglBindAPI(EGL_OPENGL_ES_API); |
| 147 | |
| 148 | if (!eglChooseConfig(dpy, config_attribs, &cfg, 1, &count)) |
| 149 | errx(77, "Couldn't get an EGLConfig\n"); |
| 150 | |
| 151 | ctx = eglCreateContext(dpy, cfg, NULL, context_attribs); |
| 152 | if (!ctx) |
| 153 | errx(77, "Couldn't create a GLES%d context\n", GLES_VERSION); |
| 154 | |
| 155 | eglMakeCurrent(dpy, NULL, NULL, ctx); |
| 156 | |
| 157 | string = glGetString(GL_VERSION); |
| 158 | printf("GL_VERSION: %s\n", string); |
| 159 | |
Eric Anholt | f15c169 | 2014-03-17 09:12:18 -0700 | [diff] [blame] | 160 | assert(eglGetError() == EGL_SUCCESS); |
| 161 | |
Eric Anholt | dbf940d | 2014-01-30 17:52:40 -0800 | [diff] [blame] | 162 | return pass != true; |
| 163 | } |