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ir_constant_expression: Add support for ir_unop_sign.

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This commit is contained in:
Kenneth Graunke
2010-07-08 23:11:14 -07:00
parent 5e840dba44
commit 14b7b2660c
1 changed files with 18 additions and 0 deletions
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18
src/glsl/ir_constant_expression.cpp
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@@ -262,6 +262,24 @@ ir_constant_visitor::visit(ir_expression *ir)
}
break;
case ir_unop_sign:
for (unsigned c = 0; c < ir->operands[0]->type->components(); c++) {
switch (ir->type->base_type) {
case GLSL_TYPE_UINT:
data.u[c] = op[0]->value.i[c] > 0;
break;
case GLSL_TYPE_INT:
data.i[c] = (op[0]->value.i[c] > 0) - (op[0]->value.i[c] < 0);
break;
case GLSL_TYPE_FLOAT:
data.f[c] = float((op[0]->value.f[c] > 0)-(op[0]->value.f[c] < 0));
break;
default:
assert(0);
}
}
break;
case ir_unop_rcp:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < ir->operands[0]->type->components(); c++) {