[Mesa-dev] [PATCH 19/26] i965/gen9: Do not use fast clear on compressed mipmapped/arrayed

[Topi Pohjolainen]

Signed-off-by: Topi Pohjolainen <topi.pohjolainen at intel.com>
---
 src/mesa/drivers/dri/i965/brw_blorp.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_blorp.c b/src/mesa/drivers/dri/i965/brw_blorp.c
index 8782424..d937c5c 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.c
+++ b/src/mesa/drivers/dri/i965/brw_blorp.c
@@ -814,6 +814,18 @@ do_single_blorp_clear(struct brw_context *brw, struct gl_framebuffer *fb,
    const enum intel_fast_clear_state fast_clear_state =
       intel_miptree_get_fast_clear_state(irb->mt, irb->mt_level, layer);
 
+   /* Surface state can only record one fast clear color value meaning that
+    * invididual levels/layers in mipmapped/arrayed textures would need to
+    * agree on the fast clear value. Using compression with rep-clear lifts
+    * this constraint as color values get recorded in the color buffer per
+    * compression block.
+    */
+   if (is_lossless_compressed &&
+       (irb->mt->logical_depth0 > 1 ||
+        irb->mt->first_level ||
+        irb->mt->last_level))
+      can_fast_clear = false;
+
    if (can_fast_clear) {
       union gl_color_union override_color;
       brw_meta_convert_fast_clear_color(brw, irb->mt, &ctx->Color.ClearColor,
-- 
2.5.5