| /* |
| * Copyright © 2014 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. |
| */ |
| |
| /** |
| * @file egl_without_glx.c |
| * |
| * Tries to test operation of the library on a GL stack with EGL and |
| * GLES but no GLX or desktop GL (such as Arm's Mali GLES3 drivers). |
| * This test is varied by the GLES_VERSION defined at compile time to |
| * test either a GLES1-only or a GLES2-only system. |
| */ |
| |
| #define _GNU_SOURCE |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| #include <err.h> |
| #include <dlfcn.h> |
| #include "epoxy/gl.h" |
| #include "epoxy/egl.h" |
| |
| #include "egl_common.h" |
| |
| /** |
| * Wraps the system dlopen(), which libepoxy will end up calling when |
| * it tries to dlopen() the API libraries, and errors out the |
| * libraries we're trying to simulate not being installed on the |
| * system. |
| */ |
| void * |
| dlopen(const char *filename, int flag) |
| { |
| void * (*dlopen_unwrapped)(const char *filename, int flag); |
| |
| if (filename) { |
| if (!strcmp(filename, "libGL.so.1")) |
| return NULL; |
| #if GLES_VERSION == 2 |
| if (!strcmp(filename, "libGLESv1_CM.so.1")) |
| return NULL; |
| #else |
| if (!strcmp(filename, "libGLESv2.so.2")) |
| return NULL; |
| #endif |
| } |
| |
| dlopen_unwrapped = dlsym(RTLD_NEXT, "dlopen"); |
| assert(dlopen_unwrapped); |
| |
| return dlopen_unwrapped(filename, flag); |
| } |
| |
| |
| static EGLenum last_api; |
| static EGLenum extra_error = EGL_SUCCESS; |
| |
| /** |
| * Override of the real libEGL's eglBindAPI to simulate the target |
| * system's eglBindAPI. |
| */ |
| static EGLBoolean |
| override_eglBindAPI(EGLenum api) |
| { |
| void *egl = dlopen("libEGL.so.1", RTLD_LAZY | RTLD_LOCAL); |
| EGLBoolean (*real_eglBindAPI)(EGLenum api) = dlsym(egl, "eglBindAPI"); |
| |
| last_api = api; |
| |
| if (api == EGL_OPENGL_API) { |
| extra_error = EGL_BAD_PARAMETER; |
| return EGL_FALSE; |
| } |
| |
| assert(real_eglBindAPI); |
| return real_eglBindAPI(api); |
| } |
| |
| /** |
| * Override of the real libEGL's eglGetError() to feed back the error |
| * that might have been generated by override_eglBindAPI(). |
| */ |
| static EGLint |
| override_eglGetError(void) |
| { |
| void *egl = dlopen("libEGL.so.1", RTLD_LAZY | RTLD_LOCAL); |
| EGLint (*real_eglGetError)(void) = dlsym(egl, "eglGetError"); |
| |
| if (extra_error != EGL_SUCCESS) { |
| EGLenum error = extra_error; |
| extra_error = EGL_SUCCESS; |
| return error; |
| } |
| |
| assert(real_eglGetError); |
| return real_eglGetError(); |
| } |
| |
| int |
| main(int argc, char **argv) |
| { |
| bool pass = true; |
| EGLDisplay *dpy = get_egl_display_or_skip(); |
| EGLint context_attribs[] = { |
| EGL_CONTEXT_CLIENT_VERSION, GLES_VERSION, |
| EGL_NONE |
| }; |
| EGLConfig cfg; |
| EGLint config_attribs[] = { |
| EGL_SURFACE_TYPE, EGL_WINDOW_BIT, |
| EGL_RED_SIZE, 1, |
| EGL_GREEN_SIZE, 1, |
| EGL_BLUE_SIZE, 1, |
| EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, |
| EGL_NONE |
| }; |
| EGLint count; |
| EGLContext ctx; |
| const unsigned char *string; |
| |
| epoxy_eglBindAPI = override_eglBindAPI; |
| epoxy_eglGetError = override_eglGetError; |
| |
| if (!epoxy_has_egl_extension(dpy, "EGL_KHR_surfaceless_context")) |
| errx(77, "Test requires EGL_KHR_surfaceless_context"); |
| |
| eglBindAPI(EGL_OPENGL_ES_API); |
| |
| if (!eglChooseConfig(dpy, config_attribs, &cfg, 1, &count)) |
| errx(77, "Couldn't get an EGLConfig\n"); |
| |
| ctx = eglCreateContext(dpy, cfg, NULL, context_attribs); |
| if (!ctx) |
| errx(77, "Couldn't create a GLES%d context\n", GLES_VERSION); |
| |
| eglMakeCurrent(dpy, NULL, NULL, ctx); |
| |
| string = glGetString(GL_VERSION); |
| printf("GL_VERSION: %s\n", string); |
| |
| assert(eglGetError() == EGL_SUCCESS); |
| |
| return pass != true; |
| } |