vertex feedback functions

1 files changed, 72 insertions, 0 deletions

diff --git a/src/mesa/pipe/softpipe/sp_state_feedback.c b/src/mesa/pipe/softpipe/sp_state_feedback.c
new file mode 100644
index 0000000000..02aaf34e75
--- /dev/null
+++ b/src/mesa/pipe/softpipe/sp_state_feedback.c
@@ -0,0 +1,72 @@
+/**************************************************************************
+ * 
+ * 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:
+ *  Brian Paul
+ */
+
+
+#include "sp_context.h"
+#include "sp_state.h"
+#include "sp_surface.h"
+
+#include "pipe/p_winsys.h"
+#include "pipe/draw/draw_context.h"
+
+
+void
+softpipe_set_feedback_state(struct pipe_context *pipe,
+                            const struct pipe_feedback_state *feedback)
+{
+   struct softpipe_context *softpipe = softpipe_context(pipe);
+
+   softpipe->feedback = *feedback; /* struct copy */
+   /*
+   softpipe->dirty |= SP_NEW_FEEDBACK;
+   */
+
+   draw_set_feedback_state(softpipe->draw, feedback);
+}
+
+
+void
+softpipe_set_feedback_buffer(struct pipe_context *pipe,
+                             unsigned index,
+                             const struct pipe_feedback_buffer *feedback)
+{
+   struct softpipe_context *softpipe = softpipe_context(pipe);
+
+   assert(index < PIPE_MAX_FEEDBACK_ATTRIBS);
+
+   /* Need to be careful with referencing */
+   pipe->winsys->buffer_reference(pipe->winsys,
+                                  &softpipe->feedback_buffer[index].buffer,
+                                  feedback->buffer);
+   softpipe->feedback_buffer[index].size = feedback->size;
+   softpipe->feedback_buffer[index].start_offset = feedback->start_offset;
+}