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Make ir_constant_expression.cpp support multi-component types.

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This commit is contained in:
Eric Anholt
2010-04-01 18:25:11 -10:00
committed by Ian Romanick
parent 160d092507
commit d98da9738e
1 changed files with 55 additions and 16 deletions
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71
ir_constant_expression.cpp
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@@ -133,40 +133,79 @@ ir_constant_visitor::visit(ir_expression *ir)
{
value = NULL;
ir_constant *op[2];
unsigned int i;
unsigned int operand, c;
unsigned u[16];
int i[16];
float f[16];
bool b[16];
const glsl_type *type = NULL;
for (i = 0; i < ir->get_num_operands(); i++) {
op[i] = ir->operands[i]->constant_expression_value();
if (!op[i])
for (operand = 0; operand < ir->get_num_operands(); operand++) {
op[operand] = ir->operands[operand]->constant_expression_value();
if (!op[operand])
return;
}
switch (ir->operation) {
case ir_unop_logic_not:
value = new ir_constant(!op[0]->value.b[0]);
value->type = glsl_type::bool_type;
type = ir->operands[0]->type;
assert(type->base_type == GLSL_TYPE_BOOL);
for (c = 0; c < ir->operands[0]->type->components(); c++)
b[c] = !op[0]->value.b[c];
break;
case ir_binop_mul:
if (ir->operands[0]->type == ir->operands[1]->type) {
if (ir->operands[1]->type == glsl_type::float_type) {
value = new ir_constant(op[0]->value.f[0] * op[1]->value.f[0]);
value->type = glsl_type::float_type;
if (ir->operands[0]->type == ir->operands[1]->type &&
!ir->operands[0]->type->is_matrix()) {
type = ir->operands[0]->type;
for (c = 0; c < ir->operands[0]->type->components(); c++) {
switch (ir->operands[0]->type->base_type) {
case GLSL_TYPE_UINT:
u[c] = op[0]->value.u[c] * op[1]->value.u[c];
break;
case GLSL_TYPE_INT:
i[c] = op[0]->value.i[c] * op[1]->value.i[c];
break;
case GLSL_TYPE_FLOAT:
f[c] = op[0]->value.f[c] * op[1]->value.f[c];
break;
default:
assert(0);
}
}
}
if (value)
value->type = ir->operands[1]->type;
break;
case ir_binop_logic_and:
value = new ir_constant(op[0]->value.b[0] && op[1]->value.b[0]);
value->type = glsl_type::bool_type;
type = ir->operands[0]->type;
assert(type->base_type == GLSL_TYPE_BOOL);
for (c = 0; c < ir->operands[0]->type->components(); c++)
b[c] = op[0]->value.b[c] && op[1]->value.b[c];
break;
case ir_binop_logic_or:
value = new ir_constant(op[0]->value.b[0] || op[1]->value.b[0]);
value->type = glsl_type::bool_type;
type = ir->operands[0]->type;
assert(type->base_type == GLSL_TYPE_BOOL);
for (c = 0; c < ir->operands[0]->type->components(); c++)
b[c] = op[0]->value.b[c] || op[1]->value.b[c];
break;
default:
break;
}
if (type) {
switch (type->base_type) {
case GLSL_TYPE_UINT:
value = new ir_constant(type, u);
break;
case GLSL_TYPE_INT:
value = new ir_constant(type, i);
break;
case GLSL_TYPE_FLOAT:
value = new ir_constant(type, f);
break;
case GLSL_TYPE_BOOL:
value = new ir_constant(type, b);
break;
}
}
}