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246 lines
6.5 KiB
246 lines
6.5 KiB
/*
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* Copyright © 2014 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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/**
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* @file egl_and_glx_different_pointers.c
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*
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* Tests that epoxy correctly handles an EGL and GLX implementation
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* that return different function pointers between the two.
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*
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* This is the case for EGL and GLX on nvidia binary drivers
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* currently, but is also the case if someone has nvidia binary GLX
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* installed but still has Mesa (software) EGL installed. This seems
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* common enough that we should make sure things work.
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <err.h>
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#include <dlfcn.h>
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#include "epoxy/gl.h"
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#include "epoxy/egl.h"
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#include "epoxy/glx.h"
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#include "egl_common.h"
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#include "glx_common.h"
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#include "dlwrap.h"
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#define GLX_FAKED_VENDOR_STRING "libepoxy override GLX"
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#define EGL_FAKED_VENDOR_STRING "libepoxy override EGL"
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#define GL_CREATESHADER_VALUE 1234
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#define GLES2_CREATESHADER_VALUE 5678
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const char *override_GLES2_glGetString(GLenum e);
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const char *override_GL_glGetString(GLenum e);
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GLuint override_GLES2_glCreateShader(GLenum e);
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GLuint override_GL_glCreateShader(GLenum e);
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const char *
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override_GL_glGetString(GLenum e)
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{
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if (e == GL_VENDOR)
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return GLX_FAKED_VENDOR_STRING;
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return DEFER_TO_GL("libGL.so.1", override_GL_glGetString,
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"glGetString", (e));
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}
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const char *
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override_GLES2_glGetString(GLenum e)
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{
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if (e == GL_VENDOR)
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return EGL_FAKED_VENDOR_STRING;
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return DEFER_TO_GL("libGLESv2.so.2", override_GLES2_glGetString,
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"glGetString", (e));
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}
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GLuint
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override_GL_glCreateShader(GLenum type)
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{
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return GL_CREATESHADER_VALUE;
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}
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GLuint
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override_GLES2_glCreateShader(GLenum type)
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{
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return GLES2_CREATESHADER_VALUE;
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}
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#ifdef USE_GLX
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static bool
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make_glx_current_and_test(Display *dpy, GLXContext ctx, Drawable draw)
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{
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const char *string;
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GLuint shader;
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bool pass = true;
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glXMakeCurrent(dpy, draw, ctx);
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if (!epoxy_is_desktop_gl()) {
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fprintf(stderr, "Claimed to be ES\n");
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pass = false;
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}
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string = (const char *)glGetString(GL_VENDOR);
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printf("GLX vendor: %s\n", string);
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shader = glCreateShader(GL_FRAGMENT_SHADER);
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if (shader != GL_CREATESHADER_VALUE) {
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fprintf(stderr, "glCreateShader() returned %d instead of %d\n",
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shader, GL_CREATESHADER_VALUE);
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pass = false;
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}
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pass = pass && !strcmp(string, GLX_FAKED_VENDOR_STRING);
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return pass;
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}
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static void
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init_glx(Display **out_dpy, GLXContext *out_ctx, Drawable *out_draw)
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{
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Display *dpy = get_display_or_skip();
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make_glx_context_current_or_skip(dpy);
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*out_dpy = dpy;
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*out_ctx = glXGetCurrentContext();
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*out_draw= glXGetCurrentDrawable();
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}
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#endif /* USE_GLX */
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#ifdef USE_EGL
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static bool
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make_egl_current_and_test(EGLDisplay *dpy, EGLContext ctx)
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{
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const char *string;
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GLuint shader;
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bool pass = true;
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eglMakeCurrent(dpy, NULL, NULL, ctx);
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if (epoxy_is_desktop_gl()) {
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fprintf(stderr, "Claimed to be desktop\n");
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pass = false;
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}
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if (epoxy_gl_version() < 20) {
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fprintf(stderr, "Claimed to be GL version %d\n",
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epoxy_gl_version());
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pass = false;
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}
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shader = glCreateShader(GL_FRAGMENT_SHADER);
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if (shader != GLES2_CREATESHADER_VALUE) {
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fprintf(stderr, "glCreateShader() returned %d instead of %d\n",
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shader, GLES2_CREATESHADER_VALUE);
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pass = false;
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}
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string = (const char *)glGetString(GL_VENDOR);
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printf("EGL vendor: %s\n", string);
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pass = pass && !strcmp(string, EGL_FAKED_VENDOR_STRING);
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return pass;
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}
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static void
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init_egl(EGLDisplay **out_dpy, EGLContext *out_ctx)
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{
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EGLDisplay *dpy = get_egl_display_or_skip();
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static const EGLint config_attribs[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RED_SIZE, 1,
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EGL_GREEN_SIZE, 1,
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EGL_BLUE_SIZE, 1,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
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EGL_NONE
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};
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static const EGLint context_attribs[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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EGLContext ctx;
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EGLConfig cfg;
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EGLint count;
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if (!epoxy_has_egl_extension(dpy, "EGL_KHR_surfaceless_context"))
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errx(77, "Test requires EGL_KHR_surfaceless_context");
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eglBindAPI(EGL_OPENGL_ES_API);
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if (!eglChooseConfig(dpy, config_attribs, &cfg, 1, &count))
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errx(77, "Couldn't get an EGLConfig\n");
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ctx = eglCreateContext(dpy, cfg, NULL, context_attribs);
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if (!ctx)
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errx(77, "Couldn't create a GLES2 context\n");
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*out_dpy = dpy;
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*out_ctx = ctx;
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}
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#endif /* USE_EGL */
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int
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main(int argc, char **argv)
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{
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bool pass = true;
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#ifdef USE_EGL
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EGLDisplay *egl_dpy;
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EGLContext egl_ctx;
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#endif
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#ifdef USE_GLX
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Display *glx_dpy;
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GLXContext glx_ctx;
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Drawable glx_draw;
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#endif
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/* Force epoxy to have loaded both EGL and GLX libs already -- we
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* can't assume anything about symbol resolution based on having
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* EGL or GLX loaded.
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*/
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(void)glXGetCurrentContext();
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(void)eglGetCurrentContext();
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#ifdef USE_GLX
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init_glx(&glx_dpy, &glx_ctx, &glx_draw);
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pass = make_glx_current_and_test(glx_dpy, glx_ctx, glx_draw) && pass;
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#endif
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#ifdef USE_EGL
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init_egl(&egl_dpy, &egl_ctx);
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pass = make_egl_current_and_test(egl_dpy, egl_ctx) && pass;
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#endif
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#if defined(USE_GLX) && defined(USE_EGL)
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pass = make_glx_current_and_test(glx_dpy, glx_ctx, glx_draw) && pass;
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pass = make_egl_current_and_test(egl_dpy, egl_ctx) && pass;
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#endif
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return pass != true;
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}
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