1 files changed, 76 insertions, 0 deletions
diff --git a/opengl/system/pdp_opengl.c b/opengl/system/pdp_opengl.c
new file mode 100644
index 0000000..541af75
--- /dev/null
+++ b/opengl/system/pdp_opengl.c
@@ -0,0 +1,76 @@
+
+/*
+ *   OpenGL Extension Module for pdp - opengl system stuff
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   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;
+
+
+static void pdp_control_thread(void *x, t_symbol *s, 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"));
+}
+
+t_pdp_procqueue* pdp_opengl_get_queue(void){return (&_3dp_queue);}
+
+
+