From a857caebd2f799a1ede1dc3b38fb849f6491d2ec Mon Sep 17 00:00:00 2001
From: Sagar Ghuge <sagar.ghuge@intel.com>
Date: Fri, 22 Sep 2023 10:23:04 -0700
Subject: [PATCH] iris: Switch to ANISOTROPIC_FAST filter mode
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Same thing as ANISOTROPIC including all restrictions except HW is allowed to
take liberties with precision to speed things up, Currently only has an affect
on formats of type *_sRGB.

Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32738>
---
 src/gallium/drivers/iris/iris_state.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index bbea195b3f5..27750d88ff8 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -2491,12 +2491,21 @@ fill_sampler_state(uint32_t *sampler_state,
 
       if (max_anisotropy >= 2) {
          if (state->min_img_filter == PIPE_TEX_FILTER_LINEAR) {
+#if GFX_VER >= 30
+            samp.MinModeFilter = MAPFILTER_ANISOTROPIC_FAST;
+#else
             samp.MinModeFilter = MAPFILTER_ANISOTROPIC;
+#endif
             samp.AnisotropicAlgorithm = EWAApproximation;
          }
 
-         if (state->mag_img_filter == PIPE_TEX_FILTER_LINEAR)
+         if (state->mag_img_filter == PIPE_TEX_FILTER_LINEAR) {
+#if GFX_VER >= 30
+            samp.MagModeFilter = MAPFILTER_ANISOTROPIC_FAST;
+#else
             samp.MagModeFilter = MAPFILTER_ANISOTROPIC;
+#endif
+         }
 
          samp.MaximumAnisotropy =
             MIN2((max_anisotropy - 2) / 2, RATIO161);