--- /dev/null
+/* Copyright © 2013, 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 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.
+ */
+
+/* Perform some simple drawing via OpenGL as follows:
+ *
+ * 1. Using EGL to construct an OpenGLESv2 context
+ * 2. By using dlopen to dynamically load libGLESv2.so and libEGL.so
+ * 3. By using dlsym to lookup OpenGL functions
+ */
+
+#define GL_GLEXT_PROTOTYPES
+#include <GLES2/gl2.h>
+#include <EGL/egl.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+
+#include "util-x11.h"
+
+EGLBoolean (*my_eglBindAPI)(EGLenum);
+EGLBoolean (*my_eglChooseConfig)(EGLDisplay, EGLint const *, EGLConfig *, EGLint, EGLint *);
+EGLContext (*my_eglCreateContext)(EGLDisplay, EGLConfig, EGLContext, EGLint const *);
+EGLSurface (*my_eglCreateWindowSurface)(EGLDisplay, EGLConfig, NativeWindowType, EGLint const *);
+EGLBoolean (*my_eglGetConfigAttrib)(EGLDisplay, EGLConfig, EGLint, EGLint *);
+EGLDisplay (*my_eglGetDisplay)(NativeDisplayType);
+EGLBoolean (*my_eglInitialize)(EGLDisplay, EGLint *, EGLint *);
+EGLBoolean (*my_eglMakeCurrent)(EGLDisplay, EGLSurface, EGLSurface, EGLContext);
+EGLBoolean (*my_eglSwapBuffers)(EGLDisplay, EGLSurface);
+void (*my_glClear)(GLbitfield);
+void (*my_glClearColor)(GLclampf, GLclampf, GLclampf, GLclampf);
+void (*my_glViewport)(GLint, GLint, GLsizei, GLsizei);
+
+#define COMMON_USE_EGL
+#define COMMON_GL_PREFIX my_
+#define COMMON_EGL_PREFIX my_
+#include "common.c"
+
+static void
+resolve_symbols (void)
+{
+ void *glesv2_handle;
+ void *egl_handle;
+ char *error;
+
+ glesv2_handle = dlopen ("libGLESv2.so", RTLD_LAZY);
+ if (glesv2_handle == NULL) {
+ fprintf (stderr, "Error: Failed to open libGL.so\n");
+ exit (1);
+ }
+
+ egl_handle = dlopen ("libEGL.so", RTLD_LAZY);
+ if (egl_handle == NULL) {
+ fprintf (stderr, "Error: Failed to open libEGL.so\n");
+ exit (1);
+ }
+
+ /* Clear errors. */
+ dlerror();
+
+ my_eglBindAPI = dlsym (egl_handle, "eglBindAPI");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglBindAPI: %s\n", error);
+ exit (1);
+ }
+
+ my_eglChooseConfig = dlsym (egl_handle, "eglChooseConfig");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglChooseConfig: %s\n", error);
+ exit (1);
+ }
+
+ my_eglCreateContext = dlsym (egl_handle, "eglCreateContext");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglCreateContext: %s\n", error);
+ exit (1);
+ }
+
+ my_eglCreateWindowSurface = dlsym (egl_handle, "eglCreateWindowSurface");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglCreateWindowSurface: %s\n", error);
+ exit (1);
+ }
+
+ my_eglGetConfigAttrib = dlsym (egl_handle, "eglGetConfigAttrib");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglGetConfigAttrib: %s\n", error);
+ exit (1);
+ }
+
+ my_eglGetDisplay = dlsym (egl_handle, "eglGetDisplay");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglGetDisplay: %s\n", error);
+ exit (1);
+ }
+
+ my_eglInitialize = dlsym (egl_handle, "eglInitialize");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglInitialize: %s\n", error);
+ exit (1);
+ }
+
+ my_eglMakeCurrent = dlsym (egl_handle, "eglMakeCurrent");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglMakeCurrent: %s\n", error);
+ exit (1);
+ }
+
+ my_eglSwapBuffers = dlsym (egl_handle, "eglSwapBuffers");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym eglSwapBuffers: %s\n", error);
+ exit (1);
+ }
+
+ my_glClear = dlsym (glesv2_handle, "glClear");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym glClear: %s\n", error);
+ exit (1);
+ }
+
+ my_glClearColor = dlsym (glesv2_handle, "glClearColor");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym glClearColor: %s\n", error);
+ exit (1);
+ }
+
+ my_glViewport = dlsym (glesv2_handle, "glViewport");
+ error = dlerror ();
+ if (error) {
+ fprintf (stderr, "Failed to dlsym glViewport: %s\n", error);
+ exit (1);
+ }
+}
+
+int
+main (void)
+{
+ Display *dpy;
+ Window window;
+ EGLDisplay egl_dpy;
+ EGLContext ctx;
+ EGLConfig config;
+ EGLSurface surface;
+ XVisualInfo *visual_info;
+
+ resolve_symbols ();
+
+ dpy = util_x11_init_display ();
+
+ common_create_egl_context (dpy, EGL_OPENGL_ES_API, &egl_dpy,
+ &ctx, &config, &visual_info);
+
+ window = util_x11_init_window (dpy, visual_info);
+
+ surface = my_eglCreateWindowSurface (egl_dpy, config, window, NULL);
+
+ common_make_current (egl_dpy, ctx, surface);
+
+ common_handle_events (dpy, egl_dpy, surface);
+
+ util_x11_fini_window (dpy, window);
+
+ util_x11_fini_display (dpy);
+
+ return 0;
+}
projects / fips / blobdiff