Add functions:
is_greater_than_one
is_less_than_zero
Add variations like greater_than_or_equal_zero.
---
This is not ideal computation-wise, as we are doing two
iterations instead of one. The question is wether or not
the extra code is worth the duplicaton.
---
src/glsl/ir_constant_util.h | 50 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/src/glsl/ir_constant_util.h b/src/glsl/ir_constant_util.h
index 4e0fede..dd6452b 100644
--- a/src/glsl/ir_constant_util.h
+++ b/src/glsl/ir_constant_util.h
@@ -105,6 +105,21 @@ is_less_than_one(ir_constant *ir)
}
static inline bool
+is_greater_than_one(ir_constant *ir)
+{
+ if (!is_valid_vec_const(ir))
+ return false;
+
+ unsigned component = 0;
+ for (int c = 0; c < ir->type->vector_elements; c++) {
+ if (ir->get_float_component(c) > 1.0f)
+ component++;
+ }
+
+ return (component == ir->type->vector_elements);
+}
+
+static inline bool
is_greater_than_zero(ir_constant *ir)
{
if (!is_valid_vec_const(ir))
@@ -119,4 +134,39 @@ is_greater_than_zero(ir_constant *ir)
return (component == ir->type->vector_elements);
}
+static inline bool
+is_less_than_zero(ir_constant *ir)
+{
+ if (!is_valid_vec_const(ir))
+ return false;
+
+ unsigned component = 0;
+ for (int c = 0; c < ir->type->vector_elements; c++) {
+ if (ir->get_float_component(c) < 0.0f)
+ component++;
+ }
+
+ return (component == ir->type->vector_elements);
+}
+
+static inline bool
+is_less_than_or_equal_zero(ir_constant *ir) {
+ return is_less_than_zero(ir) || is_vec_zero(ir);
+}
+
+static inline bool
+is_greater_than_or_equal_zero(ir_constant *ir) {
+ return is_greater_than_zero(ir) || is_vec_zero(ir);
+}
+
+static inline bool
+is_less_than_or_equal_one(ir_constant *ir) {
+ return is_less_than_one(ir) || is_vec_one(ir);
+}
+
+static inline bool
+is_greater_than_or_equal_one(ir_constant *ir) {
+ return is_greater_than_one(ir) || is_vec_one(ir);
+}
+
#endif /* IR_CONSTANT_UTIL_H_ */
--
2.0.3
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