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/*
* OpenGL Extension Module for pdp - opengl system stuff
* Copyright (c) by Tom Schouten <tom@zwizwa.be>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "pdp.h"
#include "pdp_control.h"
#define PDP_3DP_QUEUE_LOGSIZE 16
#define PDP_3DP_QUEUE_DELTIME 1.0f
void pdp_3Dcontext_prepare_for_thread_switch(void *);
static t_pdp_procqueue _3dp_queue;
t_pdp_procqueue* pdp_opengl_get_queue(void){return (&_3dp_queue);}
static void pdp_control_thread(void *x __attribute__((__unused__)),
t_symbol *s __attribute__((__unused__)),
int argc, t_atom *argv)
{
int t = 0;
float f;
if (argc != 1) return;
if (argv[0].a_type != A_FLOAT) return;
f = argv[0].a_w.w_float;
t = (f != 0.0f);
post("3dp thread switched %s", t ? "on":"off");
/* when we switch threads, the glx system needs to be notified
because it has to release the render context. this is done
in a process method, so it is run in the correct thread. */
pdp_procqueue_add(&_3dp_queue, 0, pdp_3Dcontext_prepare_for_thread_switch, 0, 0);
pdp_procqueue_wait(&_3dp_queue);
/* fresh start: enable/disable the thread dispatching */
pdp_procqueue_use_thread(&_3dp_queue, t);
}
/* kernel setup */
void pdp_opengl_system_setup(void)
{
/* init the 3dp queue */
pdp_procqueue_init(&_3dp_queue, PDP_3DP_QUEUE_DELTIME, PDP_3DP_QUEUE_LOGSIZE);
/* scheduler uses the thread */
pdp_procqueue_use_thread(&_3dp_queue, 1);
//pdp_procqueue_use_thread(&_3dp_queue, 0); //DEBUG: disable 3dp thread
/* add pdp_control method for thread */
pdp_control_addmethod((t_method)pdp_control_thread, gensym("3dthread"));
}
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