1 files changed, 21 insertions, 0 deletions
diff --git a/src/glsl/builtins/ir/dFdx b/src/glsl/builtins/ir/dFdx
new file mode 100644
index 0000000000..30594d33c7
--- /dev/null
+++ b/src/glsl/builtins/ir/dFdx
@@ -0,0 +1,21 @@
+((function dFdx
+   (signature float
+     (parameters
+       (declare (in) float p))
+     ((return (expression float dFdx (var_ref p)))))
+
+   (signature vec2
+     (parameters
+       (declare (in) vec2 p))
+     ((return (expression vec2 dFdx (var_ref p)))))
+
+   (signature vec3
+     (parameters
+       (declare (in) vec3 p))
+     ((return (expression vec3 dFdx (var_ref p)))))
+
+   (signature vec4
+     (parameters
+       (declare (in) vec4 p))
+     ((return (expression vec4 dFdx (var_ref p)))))
+))