llvmpipe: more wipping

1 files changed, 119 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_rast.c b/src/gallium/drivers/llvmpipe/lp_rast.c
new file mode 100644
index 0000000000..4771f821b3
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_rast.c
@@ -0,0 +1,119 @@
+
+struct lp_rasterizer *lp_rast_create( void )
+{
+   return CALLOC_STRUCT(lp_rasterizer);
+}
+
+void lp_rast_bind_surfaces( struct lp_rasterizer *,
+			    struct pipe_surface *color,
+			    struct pipe_surface *zstencil,
+			    const float *clear_color,
+			    double clear_depth,
+			    unsigned clear_stencil)
+{
+   pipe_surface_reference(&rast->state.color, color);
+   pipe_surface_reference(&rast->state.depth, depth);
+   rast->state.clear_color = util_pack_8888(clear_color);
+   rast->state.clear_depth = clear_depth * 0xffffffff;
+   rast->state.clear_stencil = clear_stencil;
+}
+
+/* Begining of each tile:
+ */
+void lp_rast_start_tile( struct lp_rasterizer *,
+			 unsigned x,
+			 unsigned y )
+{
+   rast->x = x;
+   rast->y = y;
+}
+
+void lp_rast_clear_color( struct lp_rasterizer *rast )
+{
+   const unsigned clear_color = rast->state.clear_color;
+   unsigned i, j;
+   
+   for (i = 0; i < TILESIZE; i++)
+      for (j = 0; j < TILESIZE; j++)
+	 rast->tile[i][j] = clear_color;
+}
+
+void lp_rast_clear_depth( struct lp_rasterizer *rast )
+{
+   const unsigned clear_depth = rast->state.clear_depth;
+   unsigned i, j;
+   
+   for (i = 0; i < TILESIZE; i++)
+      for (j = 0; j < TILESIZE; j++)
+	 rast->tile[i][j] = clear_depth;
+}
+
+void lp_rast_clear_stencil( struct lp_rasterizer *rast )
+{
+   const unsigned clear_stencil = rast->state.clear_stencil;
+
+   memset(rast->tile.stencil, clear_stencil, sizeof rast->tile.stencil );
+}
+
+void lp_rast_load_color( struct lp_rasterizer *rast )
+{
+   /* call u_tile func to load colors from surface */
+}
+
+void lp_rast_load_zstencil( struct lp_rasterizer *rast )
+{
+   /* call u_tile func to load depth (and stencil?) from surface */
+}
+
+/* Within a tile:
+ */
+void lp_rast_set_state( struct lp_rasterizer *rast,
+		       const struct lp_rast_state *state )
+{
+   rast->shader_state = state;
+   lp->quad.first->begin( lp->quad.first );
+
+}
+
+
+void lp_rast_shade_tile( struct lp_rasterizer *rast,
+			 const struct lp_rast_shader_inputs *inputs )
+{
+   /* Set up the silly quad coef pointers
+    */
+   for (i = 0; i < 4; i++) {
+      rast->quads[i].posCoef = &inputs->posCoef;
+      rast->quads[i].coef = inputs->coef;
+   }
+
+   /* Use the existing preference for 8x2 (four quads) shading:
+    */
+   for (i = 0; i < TILESIZE; i += 8) {
+      for (j = 0; j < TILESIZE; j += 2) {
+	 rast->shader_state.shade( inputs->jc,
+				   rast->x + i,
+				   rast->y + j,
+				   rast->quads, 4 );
+      }
+   }
+}
+
+/* End of tile:
+ */
+void lp_rast_store_color( struct lp_rasterizer *rast )
+{
+   /* call u_tile func to store colors to surface */
+}
+
+void lp_rast_store_zstencil( struct lp_rasterizer *rast )
+{
+   /* call u_tile func to store depth/stencil to surface */
+}
+
+/* Shutdown:
+ */
+void lp_rast_destroy( struct lp_rasterizer *rast )
+{
+   FREE(rast);
+}
+