void __attribute__((noreturn)) gl_main_loop(global_context *ctx){
int i,j,k;
while(!gl_window_should_close(ctx->window)){
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if(ctx->update_userdata){
ctx->update_userdata(ctx->userdata);
}
for(i=0;i<ctx->num_scenes;i++){
gl_scene *scene = &(ctx->scenes[i]);
//or gl_scene scene = ctx->scenes[i];
bind_scene(scene);
if(scene->update_scene){
scene->update_scene(scene, ctx->userdata);
}
//bind uniform blocks
for(j=0;j<scene->num_buffers;j++){
gl_buffer *buf = scene->buffers + j*sizeof(gl_buffer);
bind_buffer(buf);
if(buf->update_buffer){
buf->update_buffer(buf, ctx->userdata);
}
/*
TODO: update the buffer struct to contain index limits
and optimze this by calling glDrawRangeElements instead.
*/
glDrawElements(buf->draw_mode, buf->draw_count,
buf->index_type, (void*)buf->index_offset);
}
}
gl_swap_buffers(ctx->window);
gl_poll_events();
}
exit(0);//need a way to specify an exit value
}
/**
* gst_vaapi_window_glx_swap_buffers:
* @window: a #GstVaapiWindowGLX
*
* Promotes the contents of the back buffer of @window to become the
* contents of the front buffer of @window. This simply is wrapper
* around glXSwapBuffers().
*/
void
gst_vaapi_window_glx_swap_buffers (GstVaapiWindowGLX * window)
{
GstVaapiWindowGLXPrivate *priv;
g_return_if_fail (GST_VAAPI_IS_WINDOW_GLX (window));
GST_VAAPI_WINDOW_LOCK_DISPLAY (window);
priv = GST_VAAPI_WINDOW_GLX_GET_PRIVATE (window);
gl_swap_buffers (priv->gl_context);
GST_VAAPI_WINDOW_UNLOCK_DISPLAY (window);
}
