D2607: Switch eye dropper to use linear color space internally

This switches the internal color representation of the eye dropper from display space to linear. Any time a linear color is requested and the color is picked from a linear object, the result is now precise to the bit as the color gets patched through directly. Color space conversion now only happens when a color is picked from non-linear display space objects or when the color is requested to be returned in non-linear space.

In addition, this patch changes the DifferenceMatte node to interpret a tolerance of 0.0 to accept colors that are identical bit by bit, as apposed to simply refusing all colors.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/editors/include/ED_image.h b/source/blender/editors/include/ED_image.h
index 283113f93d6..9de550a20ce 100644
--- a/source/blender/editors/include/ED_image.h
+++ b/source/blender/editors/include/ED_image.h
@@ -46,7 +46,7 @@ void          ED_space_image_set(struct SpaceImage *sima, struct Scene *scene, s
 struct Mask  *ED_space_image_get_mask(struct SpaceImage *sima);
 void          ED_space_image_set_mask(struct bContext *C, struct SpaceImage *sima, struct Mask *mask);
 
-bool ED_space_image_color_sample(struct Scene *scene, struct SpaceImage *sima, struct ARegion *ar, int mval[2], float r_col[3]);
+bool ED_space_image_color_sample(struct SpaceImage *sima, struct ARegion *ar, int mval[2], float r_col[3]);
 struct ImBuf *ED_space_image_acquire_buffer(struct SpaceImage *sima, void **r_lock);
 void ED_space_image_release_buffer(struct SpaceImage *sima, struct ImBuf *ibuf, void *lock);
 bool ED_space_image_has_buffer(struct SpaceImage *sima);