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[qfcc] Update vector constant folding checks 

Internally, * is not really a valid operator for vectors since it can
have many meanings. This didn't cause trouble until trying to build
everything in game-source (since there's still a lot of legacy code in
there).
This commit is contained in:
Bill Currie 2023-02-11 20:13:44 +09:00
parent b7ad02c71d
commit fa97074aff
1 changed files with 16 additions and 15 deletions
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31
tools/qfcc/source/constfold.c
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@ -394,13 +394,15 @@ do_op_vector (int op, expr_t *e, expr_t *e1, expr_t *e2)
{
const float *v1, *v2;
vec3_t v, float_vec;
static int valid[] = {'+', '-', '*', HADAMARD, SCALE, EQ, NE, 0};
static int vv_valid[] = {'+', '-', DOT, HADAMARD, EQ, NE, 0};
static int vs_valid[] = {SCALE, 0};
static int sv_valid[] = {SCALE, '/', 0};
expr_t *t;
if (!is_vector(get_type (e1))) {
if (op != '*')
return error (e1, "invalid operator for vector");
if (!valid_op (op, sv_valid))
return error (e1, "invalid operator for scalar-vector");
t = e1;
e->e.expr.e1 = e1 = e2;
@ -408,10 +410,10 @@ do_op_vector (int op, expr_t *e, expr_t *e1, expr_t *e2)
}
if (!is_vector(get_type (e2))) {
e->e.expr.e2 = e2 = convert_to_float (e2);
if (op != SCALE && op != '/')
if (!valid_op (op, vs_valid))
return error (e1, "invalid operator for vector");
} else {
if (!valid_op (op, valid))
if (!valid_op (op, vv_valid))
return error (e1, "invalid operator for vector");
}
if (is_compare (op) || is_logic (op)) {
@ -419,7 +421,7 @@ do_op_vector (int op, expr_t *e, expr_t *e1, expr_t *e2)
e->e.expr.type = &type_int;
else
e->e.expr.type = &type_float;
} else if (op == '*' && is_vector(get_type (e2))) {
} else if (op == DOT && is_vector(get_type (e2))) {
e->e.expr.type = &type_float;
} else if (op == '/' && !is_constant (e1)) {
e2 = fold_constants (binary_expr ('/', new_float_expr (1), e2));
@ -428,9 +430,9 @@ do_op_vector (int op, expr_t *e, expr_t *e1, expr_t *e2)
e->e.expr.type = &type_vector;
}
if (op == '*' && is_float_val (e2) && expr_float (e2) == 1)
if (op == SCALE && is_float_val (e2) && expr_float (e2) == 1)
return e1;
if (op == '*' && is_float_val (e2) && expr_float (e2) == 0)
if (op == SCALE && is_float_val (e2) && expr_float (e2) == 0)
return new_vector_expr (vec3_origin);
if (op == '/' && is_float_val (e2) && expr_float (e2) == 1)
return e1;
@ -483,13 +485,12 @@ do_op_vector (int op, expr_t *e, expr_t *e1, expr_t *e2)
VectorScale (v1, 1 / v2[0], v);
e = new_vector_expr (v);
break;
case '*':
if (is_vector(get_type (e2))) {
e = new_float_expr (DotProduct (v1, v2));
} else {
VectorScale (v1, v2[0], v);
e = new_vector_expr (v);
}
case DOT:
e = new_float_expr (DotProduct (v1, v2));
break;
case SCALE:
VectorScale (v1, v2[0], v);
e = new_vector_expr (v);
break;
case EQ:
e = cmp_result_expr (VectorCompare (v1, v2));