Module: Mesa
Branch: main
Commit: 2336058bbbfeac33265f93ca9cd44971479fdc10
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=2336058bbbfeac33265f93ca9cd44971479fdc10

Author: Tapani Pälli <tapani.pa...@intel.com>
Date:   Mon Dec 11 10:13:28 2023 +0200

iris: use slow clear for small surfaces with Wa_18020603990

Described in Wa_18020603990, we need to use slow clear or add an
partial resolve after fast clear for surfaces where bpp <= 32 and
dim <= 256x256.

Signed-off-by: Tapani Pälli <tapani.pa...@intel.com>
Reviewed-by: Nanley Chery <nanley.g.ch...@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26629>

---

 src/gallium/drivers/iris/iris_clear.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/gallium/drivers/iris/iris_clear.c 
b/src/gallium/drivers/iris/iris_clear.c
index 59e8adb8a0b..ecb52fc9d08 100644
--- a/src/gallium/drivers/iris/iris_clear.c
+++ b/src/gallium/drivers/iris/iris_clear.c
@@ -138,6 +138,16 @@ can_fast_clear_color(struct iris_context *ice,
       return false;
    }
 
+   /* Wa_18020603990 - slow clear surfaces up to 256x256, 32bpp. */
+   const struct intel_device_info *devinfo =
+      ((struct iris_screen *)ice->ctx.screen)->devinfo;
+   if (intel_needs_workaround(devinfo, 18020603990)) {
+      if (isl_format_get_layout(res->surf.format)->bpb <= 32 &&
+          res->surf.logical_level0_px.w <= 256 &&
+          res->surf.logical_level0_px.h <= 256)
+         return false;
+   }
+
    return true;
 }
 

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