Handle glFlush/glFinish through the state tracker.

1 files changed, 81 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_cb_flush.c b/src/mesa/state_tracker/st_cb_flush.c
new file mode 100644
index 0000000000..a6a8f8d90f
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_flush.c
@@ -0,0 +1,81 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Brian Paul
+  */
+
+#include "main/glheader.h"
+#include "main/macros.h"
+#include "st_context.h"
+#include "st_cb_flush.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+
+
+static void st_flush(GLcontext *ctx)
+{
+   struct st_context *st = ctx->st;
+
+   /* If there has been no rendering to the frontbuffer, consider
+    * short-circuiting this, or perhaps pass an "optional" flag down
+    * to the driver so that it can make the decision.
+    */
+   st->pipe->flush( st->pipe, 0 );
+
+   
+   /* XXX: temporary hack.  This flag should only be set if we do any
+    * rendering to the front buffer.
+    */
+   st->flags.frontbuffer_dirty = (ctx->DrawBuffer->_ColorDrawBufferMask[0] == 
+				  BUFFER_BIT_FRONT_LEFT);
+
+
+   if (st->flags.frontbuffer_dirty) {
+      /* Hook for copying "fake" frontbuffer if necessary:
+       */
+      st->pipe->flush_frontbuffer( st->pipe );
+      st->flags.frontbuffer_dirty = 0;
+   }
+}
+
+static void st_finish(GLcontext *ctx)
+{
+   struct st_context *st = ctx->st;
+
+   st_flush( ctx );
+   st->pipe->wait_idle( st->pipe );
+}
+
+
+void st_init_flush_functions(struct dd_function_table *functions)
+{
+   functions->Flush = st_flush;
+   functions->Finish = st_finish;
+}