radeonsi: enable fast color clear for level 0 of mipmapped textures on <= VI

GFX9 is more complicated and needs a compute shader that we should just
copy from amdvlk.

Reviewed-by: Nicolai Hähnle <[email protected]>

1 files changed, 12 insertions, 5 deletions

diff --git a/src/gallium/drivers/radeonsi/si_clear.c b/src/gallium/drivers/radeonsi/si_clear.c
index 4e05d9bf5b2..b08a9558b4d 100644
--- a/src/gallium/drivers/radeonsi/si_clear.c
+++ b/src/gallium/drivers/radeonsi/si_clear.c
@@ -369,19 +369,26 @@ static void si_do_fast_color_clear(struct si_context *sctx,
 			continue;
 
 		unsigned level = fb->cbufs[i]->u.tex.level;
+		if (level > 0)
+			continue;
+
 		tex = (struct r600_texture *)fb->cbufs[i]->texture;
 
+		/* TODO: GFX9: Implement DCC fast clear for level 0 of
+		 * mipmapped textures. Mipmapped DCC has to clear a rectangular
+		 * area of DCC for level 0 (because the whole miptree is
+		 * organized in a 2D plane).
+		 */
+		if (sctx->chip_class >= GFX9 &&
+		    tex->resource.b.b.last_level > 0)
+			continue;
+
 		/* the clear is allowed if all layers are bound */
 		if (fb->cbufs[i]->u.tex.first_layer != 0 ||
 		    fb->cbufs[i]->u.tex.last_layer != util_max_layer(&tex->resource.b.b, 0)) {
 			continue;
 		}
 
-		/* cannot clear mipmapped textures */
-		if (fb->cbufs[i]->texture->last_level != 0) {
-			continue;
-		}
-
 		/* only supported on tiled surfaces */
 		if (tex->surface.is_linear) {
 			continue;