1 files changed, 151 insertions, 0 deletions
diff --git a/src/mesa/pipe/draw/draw_flatshade.c b/src/mesa/pipe/draw/draw_flatshade.c
new file mode 100644
index 0000000000..3a7d9de466
--- /dev/null
+++ b/src/mesa/pipe/draw/draw_flatshade.c
@@ -0,0 +1,151 @@
+/**************************************************************************
+ * 
+ * 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>
+ */
+#include "imports.h"
+
+#include "vf/vf.h"
+
+#include "sp_context.h"
+#include "sp_prim.h"
+
+
+struct flatshade_stage {
+   struct prim_stage stage;
+
+   const GLuint *lookup;
+};
+
+
+
+static INLINE struct flatshade_stage *flatshade_stage( struct prim_stage *stage )
+{
+   return (struct flatshade_stage *)stage;
+}
+
+
+static void flatshade_begin( struct prim_stage *stage )
+{
+   stage->next->begin( stage->next );
+}
+
+
+
+static INLINE void copy_attr( GLuint attr,
+			      struct vertex_header *dst, 
+			      const struct vertex_header *src )
+{
+   if (attr) {
+      memcpy( dst->data[attr],
+	      src->data[attr],
+	      sizeof(src->data[0]) );
+   }
+}
+
+static void copy_colors( struct prim_stage *stage, 
+			 struct vertex_header *dst, 
+			 const struct vertex_header *src )
+{
+   struct flatshade_stage *flatshade = flatshade_stage(stage);
+   const GLuint *lookup = flatshade->lookup;
+
+   copy_attr( lookup[VF_ATTRIB_COLOR0], dst, src );
+   copy_attr( lookup[VF_ATTRIB_COLOR1], dst, src );
+   copy_attr( lookup[VF_ATTRIB_BFC0], dst, src );
+   copy_attr( lookup[VF_ATTRIB_BFC1], dst, src );
+}
+
+
+
+/* Flatshade tri.  Required for clipping and when unfilled tris are
+ * active, otherwise handled by hardware.
+ */
+static void flatshade_tri( struct prim_stage *stage,
+			   struct prim_header *header )
+{
+   struct prim_header tmp;
+
+   tmp.det = header->det;
+   tmp.v[0] = dup_vert(stage, header->v[0], 0);
+   tmp.v[1] = dup_vert(stage, header->v[1], 1);
+   tmp.v[2] = header->v[2];
+
+   copy_colors(stage, tmp.v[0], tmp.v[2]);
+   copy_colors(stage, tmp.v[1], tmp.v[2]);
+   
+   stage->next->tri( stage->next, &tmp );
+}
+
+
+/* Flatshade line.  Required for clipping.
+ */
+static void flatshade_line( struct prim_stage *stage,
+			    struct prim_header *header )
+{
+   struct prim_header tmp;
+
+   tmp.v[0] = dup_vert(stage, header->v[0], 0);
+   tmp.v[1] = header->v[1];
+
+   copy_colors(stage, tmp.v[0], tmp.v[1]);
+   
+   stage->next->line( stage->next, &tmp );
+}
+
+
+static void flatshade_point( struct prim_stage *stage,
+			struct prim_header *header )
+{
+   stage->next->point( stage->next, header );
+}
+
+static void flatshade_end( struct prim_stage *stage )
+{
+   stage->next->end( stage->next );
+}
+
+struct prim_stage *prim_flatshade( struct softpipe_context *softpipe )
+{
+   struct flatshade_stage *flatshade = CALLOC_STRUCT(flatshade_stage);
+
+   prim_alloc_tmps( &flatshade->stage, 2 );
+
+   flatshade->stage.softpipe = softpipe;
+   flatshade->stage.next = NULL;
+   flatshade->stage.begin = flatshade_begin;
+   flatshade->stage.point = flatshade_point;
+   flatshade->stage.line = flatshade_line;
+   flatshade->stage.tri = flatshade_tri;
+   flatshade->stage.end = flatshade_end;
+
+   flatshade->lookup = softpipe->vf_attr_to_slot;
+
+   return &flatshade->stage;
+}
+
+