Mesa (main): freedreno/ir3: Don't lower s2en if samp/tex is too large

[GitLab Mirror]

Module: Mesa
Branch: main
Commit: 5b6e5db5d022988612673598ee49b96da683cb85
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5b6e5db5d022988612673598ee49b96da683cb85

Author: Rob Clark <robdclark at chromium.org>
Date:   Wed Oct 13 14:14:29 2021 -0700

freedreno/ir3: Don't lower s2en if samp/tex is too large

We only have four bits to encode an immediate samp/tex.

Signed-off-by: Rob Clark <robdclark at chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13353>

---

 src/freedreno/ir3/ir3_cp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/freedreno/ir3/ir3_cp.c b/src/freedreno/ir3/ir3_cp.c
index e6c7d520d27..551e50d44e0 100644
--- a/src/freedreno/ir3/ir3_cp.c
+++ b/src/freedreno/ir3/ir3_cp.c
@@ -621,7 +621,8 @@ instr_cp(struct ir3_cp_ctx *ctx, struct ir3_instruction *instr)
       struct ir3_register *samp = samp_tex->srcs[0];
       struct ir3_register *tex = samp_tex->srcs[1];
 
-      if ((samp->flags & IR3_REG_IMMED) && (tex->flags & IR3_REG_IMMED)) {
+      if ((samp->flags & IR3_REG_IMMED) && (tex->flags & IR3_REG_IMMED) &&
+          (samp->iim_val < 16) && (tex->iim_val < 16)) {
          instr->flags &= ~IR3_INSTR_S2EN;
          instr->cat5.samp = samp->iim_val;
          instr->cat5.tex = tex->iim_val;