Mesa (main): intel/compiler: don't lower swizzles in backend.

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Module: Mesa
Branch: main
Commit: 2692a5f8db6918c5084bd634aedd087723a66f14
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2692a5f8db6918c5084bd634aedd087723a66f14

Author: Dave Airlie <airlied at redhat.com>
Date:   Wed Dec 15 10:22:50 2021 +1000

intel/compiler: don't lower swizzles in backend.

These are lowered by crocus in the frontend, the key
entries are still used.

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14202>

---

 src/intel/compiler/brw_nir.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/src/intel/compiler/brw_nir.c b/src/intel/compiler/brw_nir.c
index ec0a6901d0d..89cadc242f5 100644
--- a/src/intel/compiler/brw_nir.c
+++ b/src/intel/compiler/brw_nir.c
@@ -1255,16 +1255,6 @@ brw_nir_apply_sampler_key(nir_shader *nir,
       tex_options.saturate_r = key_tex->gl_clamp_mask[2];
    }
 
-   /* Prior to Haswell, we have to fake texture swizzle */
-   for (unsigned s = 0; s < MAX_SAMPLERS; s++) {
-      if (key_tex->swizzles[s] == SWIZZLE_NOOP)
-         continue;
-
-      tex_options.swizzle_result |= BITFIELD_BIT(s);
-      for (unsigned c = 0; c < 4; c++)
-         tex_options.swizzles[s][c] = GET_SWZ(key_tex->swizzles[s], c);
-   }
-
    /* Prior to Haswell, we have to lower gradients on shadow samplers */
    tex_options.lower_txd_shadow = devinfo->verx10 <= 70;