From ec1949e8041b63f59aab63440ad9eeeddd226ce3 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 6 Apr 2010 10:02:27 -0700 Subject: [PATCH] Add support for =, != to ir_constant_expresion.cpp This results in constant folding of one more expression in CorrectParse2.frag. --- ir_constant_expression.cpp | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/ir_constant_expression.cpp b/ir_constant_expression.cpp index f90c69b..6325df5 100644 --- a/ir_constant_expression.cpp +++ b/ir_constant_expression.cpp @@ -318,6 +318,49 @@ ir_constant_visitor::visit(ir_expression *ir) } break; + case ir_binop_equal: + if (ir->operands[0]->type == ir->operands[1]->type) { + type = glsl_type::bool_type; + b[0] = true; + for (c = 0; c < ir->operands[0]->type->components(); c++) { + switch (ir->operands[0]->type->base_type) { + case GLSL_TYPE_UINT: + b[0] = b[0] && op[0]->value.u[c] == op[1]->value.u[c]; + break; + case GLSL_TYPE_INT: + b[0] = b[0] && op[0]->value.i[c] == op[1]->value.i[c]; + break; + case GLSL_TYPE_FLOAT: + b[0] = b[0] && op[0]->value.f[c] == op[1]->value.f[c]; + break; + default: + assert(0); + } + } + } + break; + case ir_binop_nequal: + if (ir->operands[0]->type == ir->operands[1]->type) { + type = glsl_type::bool_type; + b[0] = false; + for (c = 0; c < ir->operands[0]->type->components(); c++) { + switch (ir->operands[0]->type->base_type) { + case GLSL_TYPE_UINT: + b[0] = b[0] || op[0]->value.u[c] != op[1]->value.u[c]; + break; + case GLSL_TYPE_INT: + b[0] = b[0] || op[0]->value.i[c] != op[1]->value.i[c]; + break; + case GLSL_TYPE_FLOAT: + b[0] = b[0] || op[0]->value.f[c] != op[1]->value.f[c]; + break; + default: + assert(0); + } + } + } + break; + default: break; } -- 2.7.4