}
}
-
-static ir_rvalue *
-try_min_one(ir_rvalue *ir)
-{
- ir_expression *expr = ir->as_expression();
-
- if (!expr || expr->operation != ir_binop_min)
- return NULL;
-
- if (expr->operands[0]->is_one())
- return expr->operands[1];
-
- if (expr->operands[1]->is_one())
- return expr->operands[0];
-
- return NULL;
-}
-
-static ir_rvalue *
-try_max_zero(ir_rvalue *ir)
-{
- ir_expression *expr = ir->as_expression();
-
- if (!expr || expr->operation != ir_binop_max)
- return NULL;
-
- if (expr->operands[0]->is_zero())
- return expr->operands[1];
-
- if (expr->operands[1]->is_zero())
- return expr->operands[0];
-
- return NULL;
-}
-
-ir_rvalue *
-ir_rvalue::as_rvalue_to_saturate()
-{
- ir_expression *expr = this->as_expression();
-
- if (!expr)
- return NULL;
-
- ir_rvalue *max_zero = try_max_zero(expr);
- if (max_zero) {
- return try_min_one(max_zero);
- } else {
- ir_rvalue *min_one = try_min_one(expr);
- if (min_one) {
- return try_max_zero(min_one);
- }
- }
-
- return NULL;
-}
-
-
unsigned
vertices_per_prim(GLenum prim)
{
virtual ir_constant *constant_expression_value(void *mem_ctx,
struct hash_table *variable_context = NULL);
- ir_rvalue *as_rvalue_to_saturate();
-
virtual bool is_lvalue(const struct _mesa_glsl_parse_state * = NULL) const
{
return false;