1 files changed, 165 insertions, 0 deletions
diff --git a/src/mesa/pipe/softpipe/sp_prim_unfilled.c b/src/mesa/pipe/softpipe/sp_prim_unfilled.c
new file mode 100644
index 0000000000..ab0dab09d4
--- /dev/null
+++ b/src/mesa/pipe/softpipe/sp_prim_unfilled.c
@@ -0,0 +1,165 @@
+/**************************************************************************
+ * 
+ * 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 "sp_context.h"
+#include "sp_prim.h"
+#include "pipe/p_defines.h"
+
+
+struct unfilled_stage {
+   struct prim_stage stage;
+
+   GLuint mode[2];
+};
+
+
+static INLINE struct unfilled_stage *unfilled_stage( struct prim_stage *stage )
+{
+   return (struct unfilled_stage *)stage;
+}
+
+
+static void unfilled_begin( struct prim_stage *stage )
+{
+   struct unfilled_stage *unfilled = unfilled_stage(stage);
+
+   unfilled->mode[0] = stage->softpipe->setup.fill_ccw;
+   unfilled->mode[1] = stage->softpipe->setup.fill_cw;
+
+   stage->next->begin( stage->next );
+}
+
+static void point( struct prim_stage *stage,
+		   struct vertex_header *v0 )
+{
+   struct prim_header tmp;
+   tmp.v[0] = v0;
+   stage->next->point( stage->next, &tmp );
+}
+
+static void line( struct prim_stage *stage,
+		  struct vertex_header *v0,
+		  struct vertex_header *v1 )
+{
+   struct prim_header tmp;
+   tmp.v[0] = v0;
+   tmp.v[1] = v1;
+   stage->next->line( stage->next, &tmp );
+}
+
+
+static void points( struct prim_stage *stage,
+		    struct prim_header *header )
+{
+   struct vertex_header *v0 = header->v[0];
+   struct vertex_header *v1 = header->v[1];
+   struct vertex_header *v2 = header->v[2];
+
+   if (v0->edgeflag) point( stage, v0 );
+   if (v1->edgeflag) point( stage, v1 );
+   if (v2->edgeflag) point( stage, v2 );
+}
+
+static void lines( struct prim_stage *stage,
+		   struct prim_header *header )
+{
+   struct vertex_header *v0 = header->v[0];
+   struct vertex_header *v1 = header->v[1];
+   struct vertex_header *v2 = header->v[2];
+
+   if (v0->edgeflag) line( stage, v0, v1 );
+   if (v1->edgeflag) line( stage, v1, v2 );
+   if (v2->edgeflag) line( stage, v2, v0 );
+}
+
+
+/* Unfilled tri:  
+ *
+ * Note edgeflags in the vertex struct is not sufficient as we will
+ * need to manipulate them when decomposing primitives???
+ */
+static void unfilled_tri( struct prim_stage *stage,
+			  struct prim_header *header )
+{
+   struct unfilled_stage *unfilled = unfilled_stage(stage);
+   GLuint mode = unfilled->mode[header->det < 0];
+  
+   switch (mode) {
+   case PIPE_POLYGON_MODE_FILL:
+      stage->next->tri( stage->next, header );
+      break;
+   case PIPE_POLYGON_MODE_LINE:
+      lines( stage, header );
+      break;
+   case PIPE_POLYGON_MODE_POINT:
+      points( stage, header );
+      break;
+   default:
+      abort();
+   }   
+}
+
+static void unfilled_line( struct prim_stage *stage,
+		       struct prim_header *header )
+{
+   stage->next->line( stage->next, header );
+}
+
+
+static void unfilled_point( struct prim_stage *stage,
+			struct prim_header *header )
+{
+   stage->next->point( stage->next, header );
+}
+
+
+static void unfilled_end( struct prim_stage *stage )
+{
+   stage->next->end( stage->next );
+}
+
+struct prim_stage *prim_unfilled( struct softpipe_context *softpipe )
+{
+   struct unfilled_stage *unfilled = CALLOC_STRUCT(unfilled_stage);
+
+   prim_alloc_tmps( &unfilled->stage, 0 );
+
+   unfilled->stage.softpipe = softpipe;
+   unfilled->stage.next = NULL;
+   unfilled->stage.tmp = NULL;
+   unfilled->stage.begin = unfilled_begin;
+   unfilled->stage.point = unfilled_point;
+   unfilled->stage.line = unfilled_line;
+   unfilled->stage.tri = unfilled_tri;
+   unfilled->stage.end = unfilled_end;
+
+   return &unfilled->stage;
+}