1 files changed, 152 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_gs_tmp.h b/src/gallium/auxiliary/draw/draw_gs_tmp.h
new file mode 100644
index 0000000000..7a8683cf7c
--- /dev/null
+++ b/src/gallium/auxiliary/draw/draw_gs_tmp.h
@@ -0,0 +1,152 @@
+
+static void FUNC( struct draw_geometry_shader *shader,
+                  const struct draw_prim_info *input_prims,
+                  const struct draw_vertex_info *input_verts,
+                  struct draw_prim_info *output_prims,
+                  struct draw_vertex_info *output_verts)
+{
+   struct draw_context *draw = shader->draw;
+
+   boolean flatfirst = (draw->rasterizer->flatshade &&
+                        draw->rasterizer->flatshade_first);
+   unsigned i, j;
+   unsigned count = input_prims->count;
+   LOCAL_VARS
+
+   if (0) debug_printf("%s %d\n", __FUNCTION__, count);
+
+   debug_assert(input_prims->primitive_count == 1);
+
+   switch (input_prims->prim) {
+   case PIPE_PRIM_POINTS:
+      for (i = 0; i < count; i++) {
+	 POINT( shader, i + 0 );
+      }
+      break;
+
+   case PIPE_PRIM_LINES:
+      for (i = 0; i+1 < count; i += 2) {
+         LINE( shader , i + 0 , i + 1 );
+      }
+      break;
+
+   case PIPE_PRIM_LINE_LOOP:
+      if (count >= 2) {
+
+         for (i = 1; i < count; i++) {
+            LINE( shader, i - 1, i );
+         }
+
+	 LINE( shader, i - 1, 0 );
+      }
+      break;
+
+   case PIPE_PRIM_LINE_STRIP:
+      for (i = 1; i < count; i++) {
+         LINE( shader, i - 1, i );
+      }
+      break;
+
+   case PIPE_PRIM_TRIANGLES:
+      for (i = 0; i+2 < count; i += 3) {
+         TRIANGLE( shader, i + 0, i + 1, i + 2 );
+      }
+      break;
+
+   case PIPE_PRIM_TRIANGLE_STRIP:
+      if (flatfirst) {
+         for (i = 0; i+2 < count; i++) {
+            TRIANGLE( shader,
+                      i + 0,
+                      i + 1 + (i&1),
+                      i + 2 - (i&1) );
+         }
+      }
+      else {
+         for (i = 0; i+2 < count; i++) {
+            TRIANGLE( shader,
+                      i + 0 + (i&1),
+                      i + 1 - (i&1),
+                      i + 2 );
+         }
+      }
+      break;
+
+   case PIPE_PRIM_TRIANGLE_FAN:
+      if (count >= 3) {
+         if (flatfirst) {
+            for (i = 0; i+2 < count; i++) {
+               TRIANGLE( shader,
+                         i + 1,
+                         i + 2,
+                         0 );
+            }
+         }
+         else {
+            for (i = 0; i+2 < count; i++) {
+               TRIANGLE( shader,
+                         0,
+                         i + 1,
+                         i + 2 );
+            }
+         }
+      }
+      break;
+
+   case PIPE_PRIM_POLYGON:
+      {
+	 for (i = 0; i+2 < count; i++) {
+
+            if (flatfirst) {
+               TRIANGLE( shader, 0, i + 1, i + 2 );
+            }
+            else {
+               TRIANGLE( shader, i + 1, i + 2, 0 );
+            }
+	 }
+      }
+      break;
+
+   case PIPE_PRIM_LINES_ADJACENCY:
+      for (i = 0; i+3 < count; i += 4) {
+         LINE_ADJ( shader , i + 0 , i + 1, i + 2, i + 3 );
+      }
+      break;
+   case PIPE_PRIM_LINE_STRIP_ADJACENCY:
+      for (i = 1; i + 2 < count; i++) {
+         LINE_ADJ( shader, i - 1, i, i + 1, i + 2 );
+      }
+      break;
+
+   case PIPE_PRIM_TRIANGLES_ADJACENCY:
+      for (i = 0; i+5 < count; i += 5) {
+         TRI_ADJ( shader, i + 0, i + 1, i + 2,
+                  i + 3, i + 4, i + 5);
+      }
+      break;
+   case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
+      for (i = 0, j = 0; i+5 < count; i += 2, ++j) {
+         TRI_ADJ( shader,
+                  i + 0,
+                  i + 1 + 2*(j&1),
+                  i + 2 + 2*(j&1),
+                  i + 3 - 2*(j&1),
+                  i + 4 - 2*(j&1),
+                  i + 5);
+      }
+      break;
+
+   default:
+      debug_assert(!"Unsupported primitive in geometry shader");
+      break;
+   }
+}
+
+
+#undef TRIANGLE
+#undef TRI_ADJ
+#undef POINT
+#undef LINE
+#undef LINE_ADJ
+#undef FUNC
+#undef LOCAL_VARS