Did this patch help anything?
On 03/18/2015 11:37 AM, Matt Turner wrote:
> Transform this into b2f(or(a, b)).
> ---
> src/glsl/opt_algebraic.cpp | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
> index 0d1f3fc..98c852a 100644
> --- a/src/glsl/opt_algebraic.cpp
> +++ b/src/glsl/opt_algebraic.cpp
> @@ -421,6 +421,18 @@ ir_algebraic_visitor::handle_expression(ir_expression
> *ir)
> break;
> }
>
> + case ir_unop_saturate:
> + if (op_expr[0] && op_expr[0]->operation == ir_binop_add) {
> + ir_expression *b2f_0 = op_expr[0]->operands[0]->as_expression();
> + ir_expression *b2f_1 = op_expr[0]->operands[1]->as_expression();
> +
> + if (b2f_0 && b2f_0->operation == ir_unop_b2f &&
> + b2f_1 && b2f_1->operation == ir_unop_b2f) {
> + return b2f(logic_or(b2f_0->operands[0], b2f_1->operands[0]));
> + }
> + }
> + break;
> +
> case ir_binop_add:
> if (is_vec_zero(op_const[0]))
> return ir->operands[1];
>
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