intel/fs: Retype dest to match value in read[First]Invocation

This is what we really wanted all along.  Always retyping to D works
because that's what get_nir_src() always gives us, at least for 32-bit
types.  The SPIR-V variants of these operations accept arbitrary types
and we need this if we're going to handle 64 or 16-bit values.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index 201a23f..628d7b0 100644 (file)
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -4307,15 +4307,13 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr
       bld.exec_all().emit(SHADER_OPCODE_BROADCAST, tmp, value,
                           bld.emit_uniformize(invocation));
 
-      bld.MOV(retype(dest, BRW_REGISTER_TYPE_D),
-              fs_reg(component(tmp, 0)));
+      bld.MOV(retype(dest, value.type), fs_reg(component(tmp, 0)));
       break;
    }
 
    case nir_intrinsic_read_first_invocation: {
       const fs_reg value = get_nir_src(instr->src[0]);
-      bld.MOV(retype(dest, BRW_REGISTER_TYPE_D),
-              bld.emit_uniformize(value));
+      bld.MOV(retype(dest, value.type), bld.emit_uniformize(value));
       break;
    }