Sculpt:

* Increase epsilon for intersection a bit more, ortho view + small
  faces are problematic.
* Fix a redraw issue with one partial redraw too much at the end of
  the stroke.

3 files changed, 9 insertions, 6 deletions

diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c
index 75c32c5b45b..3e714b384a7 100644
--- a/source/blender/blenlib/intern/math_geom.c
+++ b/source/blender/blenlib/intern/math_geom.c
@@ -474,14 +474,15 @@ int isect_ray_tri_epsilon_v3(float p1[3], float d[3], float v0[3], float v1[3],
 	sub_v3_v3v3(s, p1, v0);
 	
 	cross_v3_v3v3(q, s, e1);
-	*lambda = f * dot_v3v3(e2, q);
-	if ((*lambda < 0.0)) return 0;
-	
+
 	u = f * dot_v3v3(s, p);
-	if ((u < -epsilon)||(u > 1.0+epsilon)) return 0;
+	if ((u < -epsilon)||(u > 1.0f+epsilon)) return 0;
 	
 	v = f * dot_v3v3(d, q);
-	if ((v < -epsilon)||((u + v) > 1.0+epsilon)) return 0;
+	if ((v < -epsilon)||((u + v) > 1.0f+epsilon)) return 0;
+
+	*lambda = f * dot_v3v3(e2, q);
+	if ((*lambda < 0.0f)) return 0;
 
 	if(uv) {
 		uv[0]= u;
diff --git a/source/blender/blenlib/intern/pbvh.c b/source/blender/blenlib/intern/pbvh.c
index d8e3fe4b0be..ff68e3b0881 100644
--- a/source/blender/blenlib/intern/pbvh.c
+++ b/source/blender/blenlib/intern/pbvh.c
@@ -1142,7 +1142,7 @@ static int ray_face_intersection(float ray_start[3], float ray_normal[3],
 		float dist = FLT_MAX;
 			
 		if(!isect_ray_tri_epsilon_v3(ray_start, ray_normal, t0, t1, t2,
-					 &dist, NULL, 0.001f))
+					 &dist, NULL, 0.1f))
 			dist = FLT_MAX;
 
 		if(dist >= 0 && dist < *fdist) {
diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c
index e6fe1a5153d..ce0a4d149bb 100644
--- a/source/blender/editors/sculpt_paint/sculpt.c
+++ b/source/blender/editors/sculpt_paint/sculpt.c
@@ -1843,6 +1843,7 @@ int sculpt_stroke_get_location(bContext *C, struct PaintStroke *stroke, float ou
 	invert_m4_m4(obimat, ss->ob->obmat);
 	mul_m4_v3(obimat, ray_start);
 	mul_mat3_m4_v3(obimat, ray_normal);
+	normalize_v3(ray_normal);
 
 	srd.ss = vc->obact->sculpt;
 	srd.ray_start = ray_start;
@@ -2055,6 +2056,7 @@ static void sculpt_stroke_done(bContext *C, struct PaintStroke *stroke)
 
 		if(ss->refkb) sculpt_key_to_mesh(ss->refkb, ob);
 
+		ss->partial_redraw = 0;
 		WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
 	}
 }