WM: Add utility wmOrtho2_*** funcs

Currently there are inconsistencies with pixel alignment.
but this commit has no functional changes.

- wmOrtho2_region_ui for UI/Text.
- wmOrtho2_region_pixelspace for 2D drawing.
- wmOrtho2_pixelspace - when the region isn't used.

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/windowmanager/WM_api.h b/source/blender/windowmanager/WM_api.h
index 35b7fb4b9c9..e1cd334637a 100644
--- a/source/blender/windowmanager/WM_api.h
+++ b/source/blender/windowmanager/WM_api.h
@@ -361,6 +361,10 @@ void		wmSubWindowScissorSet	(struct wmWindow *win, int swinid, const struct rcti
 void		wmFrustum			(float x1, float x2, float y1, float y2, float n, float f);
 void		wmOrtho				(float x1, float x2, float y1, float y2, float n, float f);
 void		wmOrtho2			(float x1, float x2, float y1, float y2);
+			/* use for conventions (avoid hard-coded offsets all over) */
+void		wmOrtho2_region_pixelspace(const struct ARegion *ar);
+void		wmOrtho2_region_ui(const struct ARegion *ar);
+void		wmOrtho2_pixelspace(const float x, const float y);
 
 			/* utilities */
 void		WM_framebuffer_index_set(int index);