window.c: Use eglGetProcAddress to look up extension functions

diff --git a/clients/window.c b/clients/window.c
index f495476..c8836a8 100644 (file)
--- a/clients/window.c
+++ b/clients/window.c
@@ -38,8 +38,6 @@
 
 #include <wayland-egl.h>
 
-#define EGL_EGLEXT_PROTOTYPES 1
-#define GL_GLEXT_PROTOTYPES 1
 #include <GL/gl.h>
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
@@ -81,6 +79,10 @@ struct display {
        cairo_surface_t **pointer_surfaces;
 
        display_global_handler_t global_handler;
+
+       PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
+       PFNEGLCREATEIMAGEKHRPROC create_image;
+       PFNEGLDESTROYIMAGEKHRPROC destroy_image;
 };
 
 struct window {
@@ -204,7 +206,7 @@ egl_image_surface_data_destroy(void *p)
        glDeleteTextures(1, &data->texture);
        cairo_device_release(d->device);
 
-       eglDestroyImageKHR(d->dpy, data->image);
+       d->destroy_image(d->dpy, data->image);
        wl_buffer_destroy(data->data.buffer);
        wl_egl_pixmap_destroy(data->pixmap);
        free(p);
@@ -246,9 +248,10 @@ display_create_egl_image_surface(struct display *display,
                return NULL;
        }
 
-       data->image = eglCreateImageKHR(dpy, NULL,
-                                       EGL_NATIVE_PIXMAP_KHR,
-                                       (EGLClientBuffer) data->pixmap, NULL);
+       data->image = display->create_image(dpy, NULL,
+                                           EGL_NATIVE_PIXMAP_KHR,
+                                           (EGLClientBuffer) data->pixmap,
+                                           NULL);
        if (data->image == EGL_NO_IMAGE_KHR) {
                wl_egl_pixmap_destroy(data->pixmap);
                free(data);
@@ -261,7 +264,7 @@ display_create_egl_image_surface(struct display *display,
        cairo_device_acquire(display->device);
        glGenTextures(1, &data->texture);
        glBindTexture(GL_TEXTURE_2D, data->texture);
-       glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, data->image);
+       display->image_target_texture_2d(GL_TEXTURE_2D, data->image);
        cairo_device_release(display->device);
 
        surface = cairo_gl_surface_create_for_texture(display->device,
@@ -1680,6 +1683,11 @@ display_create(int *argc, char **argv[], const GOptionEntry *option_entries)
        if (init_egl(d) < 0)
                return NULL;
 
+       d->image_target_texture_2d =
+               (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
+       d->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
+       d->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
+
        create_pointer_surfaces(d);
 
        display_render_frame(d);