Mesa (main): gallivm: fix missing cast in 4-bit blending paths.

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Module: Mesa
Branch: main
Commit: cb296047f2159390874ac31c6970bacdd72cef16
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=cb296047f2159390874ac31c6970bacdd72cef16

Author: Dave Airlie <airlied at redhat.com>
Date:   Fri Feb 11 09:42:40 2022 +1000

gallivm: fix missing cast in 4-bit blending paths.

This got noticed on an llvm debug build.

Reviewed-by: Roland Scheidegger <sroland at vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14987>

---

 src/gallium/drivers/llvmpipe/lp_state_fs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gallium/drivers/llvmpipe/lp_state_fs.c b/src/gallium/drivers/llvmpipe/lp_state_fs.c
index e775047221a..73b59caff1f 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_fs.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_fs.c
@@ -1700,6 +1700,7 @@ scale_bits(struct gallivm_state *gallivm,
 
             result = lp_build_unsigned_norm_to_float(gallivm, src_bits, flt_type, src);
             result = lp_build_clamped_float_to_unsigned_norm(gallivm, flt_type, dst_bits, result);
+            result = LLVMBuildTrunc(gallivm->builder, result, lp_build_int_vec_type(gallivm, src_type), "");
             return result;
          }