1 files changed, 7 insertions, 0 deletions
diff --git a/src/calibrator.h b/src/calibrator.h
index 1db7a3b..d953efd 100644
--- a/src/calibrator.h
+++ b/src/calibrator.h
@@ -63,6 +63,13 @@ int gamma_digit(drm_crtc_t* restrict crtc, int colour, size_t value);
  */
 int draw_id(void);
 
+/**
+ * Draw squares used as reference when tweeking the gamma correction
+ * 
+ * @return  Zero on success, -1 on error
+ */
+int draw_gamma(void);
+
 
 #endif