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glsl: Implement constant expr evaluation for bitwise logic ops

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Implement by adding the following cases to
ir_exporession::constant_expression_value():
    - ir_binop_bit_and
    - ir_binop_bit_or
    - ir_binop_bit_xor
This commit is contained in:
Chad Versace
2010-10-09 21:27:41 -07:00
committed by Kenneth Graunke
parent adea8150a7
commit 4761d0d22b
1 changed files with 54 additions and 0 deletions
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54
src/glsl/ir_constant_expression.cpp
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@@ -728,6 +728,60 @@ ir_expression::constant_expression_value()
}
break;
case ir_binop_bit_and:
for (unsigned c = 0, c0 = 0, c1 = 0;
c < components;
c0 += c0_inc, c1 += c1_inc, c++) {
switch (op[0]->type->base_type) {
case GLSL_TYPE_INT:
data.i[c] = op[0]->value.i[c0] & op[1]->value.i[c1];
break;
case GLSL_TYPE_UINT:
data.u[c] = op[0]->value.u[c0] & op[1]->value.u[c1];
break;
default:
assert(0);
}
}
break;
case ir_binop_bit_or:
for (unsigned c = 0, c0 = 0, c1 = 0;
c < components;
c0 += c0_inc, c1 += c1_inc, c++) {
switch (op[0]->type->base_type) {
case GLSL_TYPE_INT:
data.i[c] = op[0]->value.i[c0] | op[1]->value.i[c1];
break;
case GLSL_TYPE_UINT:
data.u[c] = op[0]->value.u[c0] | op[1]->value.u[c1];
break;
default:
assert(0);
}
}
break;
case ir_binop_bit_xor:
for (unsigned c = 0, c0 = 0, c1 = 0;
c < components;
c0 += c0_inc, c1 += c1_inc, c++) {
switch (op[0]->type->base_type) {
case GLSL_TYPE_INT:
data.i[c] = op[0]->value.i[c0] ^ op[1]->value.i[c1];
break;
case GLSL_TYPE_UINT:
data.u[c] = op[0]->value.u[c0] ^ op[1]->value.u[c1];
break;
default:
assert(0);
}
}
break;
default:
/* FINISHME: Should handle all expression types. */
return NULL;