From 8f62ad6d0ff3c11808739c74441f82f6f12485d6 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Mon, 28 Jun 2010 13:01:49 -0700 Subject: [PATCH] ir_to_mesa: Fix binop_sqrt for multi-channel and negative source channels. Fixes glsl-fs-sqrt-branch. --- src/mesa/shader/ir_to_mesa.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/mesa/shader/ir_to_mesa.cpp b/src/mesa/shader/ir_to_mesa.cpp index 9cf78391484..d371e35f9cf 100644 --- a/src/mesa/shader/ir_to_mesa.cpp +++ b/src/mesa/shader/ir_to_mesa.cpp @@ -706,7 +706,10 @@ ir_to_mesa_visitor::visit(ir_expression *ir) break; case ir_unop_sqrt: ir_to_mesa_emit_scalar_op1(ir, OPCODE_RSQ, result_dst, op[0]); - ir_to_mesa_emit_op1(ir, OPCODE_RCP, result_dst, result_src); + ir_to_mesa_emit_scalar_op1(ir, OPCODE_RCP, result_dst, result_src); + /* For incoming channels < 0, set the result to 0. */ + ir_to_mesa_emit_op3(ir, OPCODE_CMP, result_dst, + op[0], src_reg_for_float(0.0), result_src); break; case ir_unop_rsq: ir_to_mesa_emit_scalar_op1(ir, OPCODE_RSQ, result_dst, op[0]); -- 2.30.2