2.5

Added support for cached text drawing in View2D. Cache is needed to
prevent the viewmatrix being set/restored on each text drawing.

Adding a string:
void UI_view2d_text_cache_add(View2D *v2d, float x, float y, char *str)

Drawing:
void UI_view2d_text_cache_draw(ARegion *ar)

Nothing else needed; just make sure cache-draw is always called at end
of a view2d drawing function, to clear cache memory.

On todo for next: a version with a rectf boundary to clip text within.

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/editors/include/UI_view2d.h b/source/blender/editors/include/UI_view2d.h
index 7ff312151c5..3c58e218f09 100644
--- a/source/blender/editors/include/UI_view2d.h
+++ b/source/blender/editors/include/UI_view2d.h
@@ -129,6 +129,7 @@ struct View2DScrollers;
 struct wmWindowManager;
 struct bScreen;
 struct ScrArea;
+struct ARegion;
 struct bContext;
 struct rctf;
 
@@ -181,6 +182,9 @@ void UI_view2d_getscale(struct View2D *v2d, float *x, float *y);
 
 short UI_view2d_mouse_in_scrollers(const struct bContext *C, struct View2D *v2d, int x, int y);
 
+/* cached text drawing in v2d, to allow pixel-aligned draw as post process */
+void UI_view2d_text_cache_add(struct View2D *v2d, float x, float y, char *str);
+void UI_view2d_text_cache_draw(struct ARegion *ar);
 
 /* operators */
 void ui_view2d_operatortypes(void);