st/glsl_to_tgsi: implement ARB_shader_ballot builtin functions

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index b4849de1dc06651ba2d8a1826c76b8993e9a20e5..04e73046778654c2268a7495aa372941529406a1 100644 (file)
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -2369,6 +2369,15 @@ glsl_to_tgsi_visitor::visit_expression(ir_expression* ir, st_src_reg *op)
    case ir_unop_vote_eq:
       emit_asm(ir, TGSI_OPCODE_VOTE_EQ, result_dst, op[0]);
       break;
+   case ir_unop_ballot:
+      emit_asm(ir, TGSI_OPCODE_BALLOT, result_dst, op[0]);
+      break;
+   case ir_unop_read_first_invocation:
+      emit_asm(ir, TGSI_OPCODE_READ_FIRST, result_dst, op[0]);
+      break;
+   case ir_binop_read_invocation:
+      emit_asm(ir, TGSI_OPCODE_READ_INVOC, result_dst, op[0], op[1]);
+      break;
    case ir_unop_u2i64:
    case ir_unop_u2u64:
    case ir_unop_b2i64: {