resolve some issues with curve resolution calculaction

- resolution could become so high that it would wrap around  to a negative number, now check for small numbers before doing float division.
- resolution was being calculated in some cases when it already met the clamp value - now this is skipped.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/blenkernel/intern/mask_rasterize.c b/source/blender/blenkernel/intern/mask_rasterize.c
index b26e6de59c4..9e1f4e2cfb2 100644
--- a/source/blender/blenkernel/intern/mask_rasterize.c
+++ b/source/blender/blenkernel/intern/mask_rasterize.c
@@ -577,9 +577,9 @@ void BKE_maskrasterize_handle_init(MaskRasterHandle *mr_handle, struct Mask *mas
 			float (*diff_feather_points)[2];
 			int tot_diff_feather_points;
 
-			const int resol_a = BKE_mask_spline_resolution(spline, width, height) / 4;
-			const int resol_b = BKE_mask_spline_feather_resolution(spline, width, height) / 4;
-			const int resol = CLAMPIS(MAX2(resol_a, resol_b), 4, 512);
+			const unsigned int resol_a = BKE_mask_spline_resolution(spline, width, height) / 4;
+			const unsigned int resol_b = BKE_mask_spline_feather_resolution(spline, width, height) / 4;
+			const unsigned int resol = CLAMPIS(MAX2(resol_a, resol_b), 4, 512);
 
 			diff_points = BKE_mask_spline_differentiate_with_resolution_ex(
 			                  spline, &tot_diff_point, resol);