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ir_constant_expression: Add support for the "lessThan" builtin.

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This commit is contained in:
Kenneth Graunke 2010-07-21 18:06:18 -07:00
parent 48a69ba057
commit 6d897f07cf
1 changed files with 16 additions and 1 deletions
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17
src/glsl/ir_constant_expression.cpp
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@ -901,7 +901,22 @@ ir_call::constant_expression_value()
} else if (strcmp(callee, "length") == 0) {
return NULL; /* FINISHME: implement this */
} else if (strcmp(callee, "lessThan") == 0) {
return NULL; /* FINISHME: implement this */
assert(op[0]->type->is_vector() && op[1] && op[1]->type->is_vector());
for (unsigned c = 0; c < op[0]->type->components(); c++) {
switch (op[0]->type->base_type) {
case GLSL_TYPE_UINT:
data.b[c] = op[0]->value.u[c] < op[1]->value.u[c];
break;
case GLSL_TYPE_INT:
data.b[c] = op[0]->value.i[c] < op[1]->value.i[c];
break;
case GLSL_TYPE_FLOAT:
data.b[c] = op[0]->value.f[c] < op[1]->value.f[c];
break;
default:
assert(!"Should not get here.");
}
}
} else if (strcmp(callee, "lessThanEqual") == 0) {
return NULL; /* FINISHME: implement this */
} else if (strcmp(callee, "log") == 0) {