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

This got noticed on an llvm debug build.

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

diff --git a/src/gallium/drivers/llvmpipe/lp_state_fs.c b/src/gallium/drivers/llvmpipe/lp_state_fs.c
index e775047..73b59ca 100644 (file)
--- 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;
          }