glsl: Implement constant propagation for fp16

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3929>

diff --git a/src/compiler/glsl/opt_constant_propagation.cpp b/src/compiler/glsl/opt_constant_propagation.cpp
index cc57c48..6742083 100644 (file)
--- a/src/compiler/glsl/opt_constant_propagation.cpp
+++ b/src/compiler/glsl/opt_constant_propagation.cpp
@@ -208,6 +208,9 @@ ir_constant_propagation_visitor::constant_propagation(ir_rvalue **rvalue) {
       case GLSL_TYPE_FLOAT:
         data.f[i] = found->constant->value.f[rhs_channel];
         break;
+      case GLSL_TYPE_FLOAT16:
+        data.f16[i] = found->constant->value.f16[rhs_channel];
+        break;
       case GLSL_TYPE_DOUBLE:
         data.d[i] = found->constant->value.d[rhs_channel];
         break;