Tile clearing optimizations.

Clear using int values rather than floats when possible.  Better performance now.

1 files changed, 4 insertions, 38 deletions

diff --git a/src/mesa/pipe/softpipe/sp_clear.c b/src/mesa/pipe/softpipe/sp_clear.c
index a6352e0616..bfe4a29144 100644
--- a/src/mesa/pipe/softpipe/sp_clear.c
+++ b/src/mesa/pipe/softpipe/sp_clear.c
@@ -51,49 +51,15 @@ softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
    softpipe_update_derived(softpipe); /* not needed?? */
 
    if (ps == sp_tile_cache_get_surface(softpipe->zbuf_cache)) {
-      float clear[4];
-      clear[0] = 1.0; /* XXX hack */
-      sp_tile_cache_clear(softpipe->zbuf_cache, clear);
+      sp_tile_cache_clear(softpipe->zbuf_cache, clearValue);
    }
    else if (ps == sp_tile_cache_get_surface(softpipe->cbuf_cache[0])) {
-      float clear[4];
-      /* XXX it sure would be nice if the clear color was passed to
-       * this function as float[4]....
-       */
-      uint r, g, b, a;
-      switch (ps->format) {
-      case PIPE_FORMAT_R8G8B8A8_UNORM:
-         r = (clearValue >> 24) & 0xff;
-         g = (clearValue >> 16) & 0xff;
-         g = (clearValue >>  8) & 0xff;
-         a = (clearValue      ) & 0xff;
-         break;
-      case PIPE_FORMAT_A8R8G8B8_UNORM:
-         r = (clearValue >> 16) & 0xff;
-         g = (clearValue >>  8) & 0xff;
-         b = (clearValue      ) & 0xff;
-         a = (clearValue >> 24) & 0xff;
-         break;
-      case PIPE_FORMAT_B8G8R8A8_UNORM:
-         r = (clearValue >>  8) & 0xff;
-         g = (clearValue >> 16) & 0xff;
-         b = (clearValue >> 24) & 0xff;
-         a = (clearValue      ) & 0xff;
-         break;
-      default:
-         assert(0);
-      }
-
-      clear[0] = r / 255.0;
-      clear[1] = g / 255.0;
-      clear[2] = b / 255.0;
-      clear[3] = a / 255.0;
-
-      sp_tile_cache_clear(softpipe->cbuf_cache[0], clear);
+      sp_tile_cache_clear(softpipe->cbuf_cache[0], clearValue);
    }
 
+#if !TILE_CLEAR_OPTIMIZATION
    pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
-
+#endif
 
 #if 0
    sp_clear_tile_cache(ps, clearValue);