Fix all remaining unified paint settings uses of current Scene.

Things like brush size and strength accessors now take a scene
parameter rather than guessing about which Scene's unified paint
settings to use.

Setting the size/strength through RNA can now be done separately for
the brush or the UnifiedPaintSettings.

The UI python code required updating to check whether the
size/strength controls should use brush or UnifiedPaintSettings RNA.

Radial control also required some updates to switch between the two
RNA sources.

11 files changed, 365 insertions, 418 deletions

diff --git a/source/blender/blenkernel/BKE_brush.h b/source/blender/blenkernel/BKE_brush.h
index 687da70974c..13f72634bda 100644
--- a/source/blender/blenkernel/BKE_brush.h
+++ b/source/blender/blenkernel/BKE_brush.h
@@ -59,7 +59,8 @@ int brush_clone_image_set_nr(struct Brush *brush, int nr);
 int brush_clone_image_delete(struct Brush *brush);
 
 /* jitter */
-void brush_jitter_pos(struct Brush *brush, float *pos, float *jitterpos);
+void brush_jitter_pos(const struct Scene *scene, struct Brush *brush,
+					  float *pos, float *jitterpos);
 
 /* brush curve */
 void brush_curve_preset(struct Brush *b, /*enum CurveMappingPreset*/int preset);
@@ -67,8 +68,8 @@ float brush_curve_strength_clamp(struct Brush *br, float p, const float len);
 float brush_curve_strength(struct Brush *br, float p, const float len); /* used for sculpt */
 
 /* sampling */
-void brush_sample_tex(struct Brush *brush, const float xy[2], float rgba[4], const int thread);
-void brush_imbuf_new(struct Brush *brush, short flt, short texfalloff, int size,
+void brush_sample_tex(const struct Scene *scene, struct Brush *brush, const float xy[2], float rgba[4], const int thread);
+void brush_imbuf_new(const struct Scene *scene, struct Brush *brush, short flt, short texfalloff, int size,
 	struct ImBuf **imbuf, int use_color_correction);
 
 /* painting */
@@ -92,18 +93,27 @@ struct ImBuf *brush_gen_radial_control_imbuf(struct Brush *br);
 
 /* unified strength and size */
 
-int  brush_size(struct Brush *brush);
-void brush_set_size(struct Brush *brush, int value);
+int  brush_size(const struct Scene *scene, struct Brush *brush);
+void brush_set_size(struct Scene *scene, struct Brush *brush, int value);
+
+float brush_unprojected_radius(const struct Scene *scene, struct Brush *brush);
+void  brush_set_unprojected_radius(struct Scene *scene, struct Brush *brush, float value);
+
+float brush_alpha(const struct Scene *scene, struct Brush *brush);
 
 int  brush_use_locked_size(const struct Scene *scene, struct Brush *brush);
 int  brush_use_alpha_pressure(const struct Scene *scene, struct Brush *brush);
 int  brush_use_size_pressure(const struct Scene *scene, struct Brush *brush);
 
-float brush_unprojected_radius(struct Brush *brush);
-void  brush_set_unprojected_radius(struct Brush *brush, float value);
+/* scale unprojected radius to reflect a change in the brush's 2D size */
+void brush_scale_unprojected_radius(float *unprojected_radius,
+									int new_brush_size,
+									int old_brush_size);
 
-float brush_alpha(struct Brush *brush);
-void  brush_set_alpha(struct Brush *brush, float value);
+/* scale brush size to reflect a change in the brush's unprojected radius */
+void brush_scale_size(int *brush_size,
+					  float new_unprojected_radius,
+					  float old_unprojected_radius);
 
 /* debugging only */
 void brush_debug_print_state(struct Brush *br);
diff --git a/source/blender/blenkernel/intern/brush.c b/source/blender/blenkernel/intern/brush.c
index b78b15c9a6a..362fa6e5e9a 100644
--- a/source/blender/blenkernel/intern/brush.c
+++ b/source/blender/blenkernel/intern/brush.c
@@ -487,14 +487,14 @@ int brush_clone_image_delete(Brush *brush)
 }
 
 /* Brush Sampling */
-void brush_sample_tex(Brush *brush, const float xy[2], float rgba[4], const int thread)
+void brush_sample_tex(const Scene *scene, Brush *brush, const float xy[2], float rgba[4], const int thread)
 {
 	MTex *mtex= &brush->mtex;
 
 	if (mtex && mtex->tex) {
 		float co[3], tin, tr, tg, tb, ta;
 		int hasrgb;
-		const int radius= brush_size(brush);
+		const int radius= brush_size(scene, brush);
 
 		co[0]= xy[0]/radius;
 		co[1]= xy[1]/radius;
@@ -521,14 +521,14 @@ void brush_sample_tex(Brush *brush, const float xy[2], float rgba[4], const int
 }
 
 /* TODO, use define for 'texfall' arg */
-void brush_imbuf_new(Brush *brush, short flt, short texfall, int bufsize, ImBuf **outbuf, int use_color_correction)
+void brush_imbuf_new(const Scene *scene, Brush *brush, short flt, short texfall, int bufsize, ImBuf **outbuf, int use_color_correction)
 {
 	ImBuf *ibuf;
 	float xy[2], rgba[4], *dstf;
 	int x, y, rowbytes, xoff, yoff, imbflag;
-	const int radius= brush_size(brush);
+	const int radius= brush_size(scene, brush);
 	char *dst, crgb[3];
-	const float alpha= brush_alpha(brush);
+	const float alpha= brush_alpha(scene, brush);
 	float brush_rgb[3];
     
 	imbflag= (flt)? IB_rectfloat: IB_rect;
@@ -559,10 +559,10 @@ void brush_imbuf_new(Brush *brush, short flt, short texfall, int bufsize, ImBuf
 					dstf[3]= alpha*brush_curve_strength_clamp(brush, len_v2(xy), radius);
 				}
 				else if (texfall == 1) {
-					brush_sample_tex(brush, xy, dstf, 0);
+					brush_sample_tex(scene, brush, xy, dstf, 0);
 				}
 				else {
-					brush_sample_tex(brush, xy, rgba, 0);
+					brush_sample_tex(scene, brush, xy, rgba, 0);
 					mul_v3_v3v3(dstf, rgba, brush_rgb);
 					dstf[3] = rgba[3]*alpha*brush_curve_strength_clamp(brush, len_v2(xy), radius);
 				}
@@ -589,14 +589,14 @@ void brush_imbuf_new(Brush *brush, short flt, short texfall, int bufsize, ImBuf
 					dst[3] = FTOCHAR(alpha_f);
 				}
 				else if (texfall == 1) {
-					brush_sample_tex(brush, xy, rgba, 0);
+					brush_sample_tex(scene, brush, xy, rgba, 0);
 					dst[0] = FTOCHAR(rgba[0]);
 					dst[1] = FTOCHAR(rgba[1]);
 					dst[2] = FTOCHAR(rgba[2]);
 					dst[3] = FTOCHAR(rgba[3]);
 				}
 				else if (texfall == 2) {
-					brush_sample_tex(brush, xy, rgba, 0);
+					brush_sample_tex(scene, brush, xy, rgba, 0);
 					mul_v3_v3(rgba, brush->rgb);
 					alpha_f = rgba[3] * alpha * brush_curve_strength_clamp(brush, len_v2(xy), radius);
 
@@ -606,7 +606,7 @@ void brush_imbuf_new(Brush *brush, short flt, short texfall, int bufsize, ImBuf
 					dst[3] = FTOCHAR(alpha_f);
 				}
 				else {
-					brush_sample_tex(brush, xy, rgba, 0);
+					brush_sample_tex(scene, brush, xy, rgba, 0);
 					alpha_f = rgba[3] * alpha * brush_curve_strength_clamp(brush, len_v2(xy), radius);
 
 					dst[0] = crgb[0];
@@ -621,6 +621,125 @@ void brush_imbuf_new(Brush *brush, short flt, short texfall, int bufsize, ImBuf
 	*outbuf= ibuf;
 }
 
+/* Unified Size and Strength */
+
+// XXX: be careful about setting size and unprojected radius
+// because they depend on one another
+// these functions do not set the other corresponding value
+// this can lead to odd behavior if size and unprojected
+// radius become inconsistent.
+// the biggest problem is that it isn't possible to change
+// unprojected radius because a view context is not
+// available.  my ussual solution to this is to use the
+// ratio of change of the size to change the unprojected
+// radius.  Not completely convinced that is correct.
+// In anycase, a better solution is needed to prevent
+// inconsistency.
+
+void brush_set_size(Scene *scene, Brush *brush, int size)
+{
+	UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
+
+	if (ups->flag & UNIFIED_PAINT_SIZE)
+		ups->size= size;
+	else
+		brush->size= size;
+}
+
+int brush_size(const Scene *scene, Brush *brush)
+{
+	UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
+
+	return (ups->flag & UNIFIED_PAINT_SIZE) ? ups->size : brush->size;
+}
+
+int brush_use_locked_size(const Scene *scene, Brush *brush)
+{
+	const short us_flag = scene->toolsettings->unified_paint_settings.flag;
+
+	return (us_flag & UNIFIED_PAINT_SIZE) ?
+	        (us_flag & UNIFIED_PAINT_BRUSH_LOCK_SIZE) :
+	        (brush->flag & BRUSH_LOCK_SIZE);
+}
+
+int brush_use_size_pressure(const Scene *scene, Brush *brush)
+{
+	const short us_flag = scene->toolsettings->unified_paint_settings.flag;
+
+	return (us_flag & UNIFIED_PAINT_SIZE) ?
+	        (us_flag & UNIFIED_PAINT_BRUSH_SIZE_PRESSURE) :
+	        (brush->flag & BRUSH_SIZE_PRESSURE);
+}
+
+int brush_use_alpha_pressure(const Scene *scene, Brush *brush)
+{
+	const short us_flag = scene->toolsettings->unified_paint_settings.flag;
+
+	return (us_flag & UNIFIED_PAINT_ALPHA) ?
+	        (us_flag & UNIFIED_PAINT_BRUSH_ALPHA_PRESSURE) :
+	        (brush->flag & BRUSH_ALPHA_PRESSURE);
+}
+
+void brush_set_unprojected_radius(Scene *scene, Brush *brush, float unprojected_radius)
+{
+	UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
+
+	if (ups->flag & UNIFIED_PAINT_SIZE)
+		ups->unprojected_radius= unprojected_radius;
+	else
+		brush->unprojected_radius= unprojected_radius;
+}
+
+float brush_unprojected_radius(const Scene *scene, Brush *brush)
+{
+	UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
+
+	return (ups->flag & UNIFIED_PAINT_SIZE) ?
+	        ups->unprojected_radius :
+	        brush->unprojected_radius;
+}
+
+static void brush_set_alpha(Scene *scene, Brush *brush, float alpha)
+{
+	UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
+
+	if (ups->flag & UNIFIED_PAINT_ALPHA)
+		ups->alpha= alpha;
+	else
+		brush->alpha= alpha;
+}
+
+float brush_alpha(const Scene *scene, Brush *brush)
+{
+	UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
+
+	return (ups->flag & UNIFIED_PAINT_ALPHA) ? ups->alpha : brush->alpha;
+}
+
+/* scale unprojected radius to reflect a change in the brush's 2D size */
+void brush_scale_unprojected_radius(float *unprojected_radius,
+									int new_brush_size,
+									int old_brush_size)
+{
+	float scale = new_brush_size;
+	/* avoid division by zero */
+	if(old_brush_size != 0)
+		scale /= (float)old_brush_size;
+	(*unprojected_radius) *= scale;
+}
+
+/* scale brush size to reflect a change in the brush's unprojected radius */
+void brush_scale_size(int *brush_size,
+					  float new_unprojected_radius,
+					  float old_unprojected_radius)
+{
+	float scale = new_unprojected_radius;
+	/* avoid division by zero */
+	if(old_unprojected_radius != 0)
+		scale /= new_unprojected_radius;
+	(*brush_size)= (int)((float)(*brush_size) * scale);
+}
+
 /* Brush Painting */
 
 typedef struct BrushPainterCache {
@@ -673,8 +792,8 @@ BrushPainter *brush_painter_new(Scene *scene, Brush *brush)
 	painter->firsttouch= 1;
 	painter->cache.lastsize= -1; /* force ibuf create in refresh */
 
-	painter->startsize = brush_size(brush);
-	painter->startalpha = brush_alpha(brush);
+	painter->startsize = brush_size(scene, brush);
+	painter->startalpha = brush_alpha(scene, brush);
 	painter->startjitter = brush->jitter;
 	painter->startspacing = brush->spacing;
 
@@ -707,8 +826,8 @@ void brush_painter_free(BrushPainter *painter)
 {
 	Brush *brush = painter->brush;
 
-	brush_set_size(brush, painter->startsize);
-	brush_set_alpha(brush, painter->startalpha);
+	brush_set_size(painter->scene, brush, painter->startsize);
+	brush_set_alpha(painter->scene, brush, painter->startalpha);
 	brush->jitter = painter->startjitter;
 	brush->spacing = painter->startspacing;
 
@@ -720,12 +839,13 @@ void brush_painter_free(BrushPainter *painter)
 
 static void brush_painter_do_partial(BrushPainter *painter, ImBuf *oldtexibuf, int x, int y, int w, int h, int xt, int yt, float *pos)
 {
+	Scene *scene= painter->scene;
 	Brush *brush= painter->brush;
 	ImBuf *ibuf, *maskibuf, *texibuf;
 	float *bf, *mf, *tf, *otf=NULL, xoff, yoff, xy[2], rgba[4];
 	char *b, *m, *t, *ot= NULL;
 	int dotexold, origx= x, origy= y;
-	const int radius= brush_size(brush);
+	const int radius= brush_size(painter->scene, brush);
 
 	xoff = -radius + 0.5f;
 	yoff = -radius + 0.5f;
@@ -763,7 +883,7 @@ static void brush_painter_do_partial(BrushPainter *painter, ImBuf *oldtexibuf, i
 					xy[0] = x + xoff;
 					xy[1] = y + yoff;
 
-					brush_sample_tex(brush, xy, tf, 0);
+					brush_sample_tex(scene, brush, xy, tf, 0);
 				}
 
 				bf[0] = tf[0]*mf[0];
@@ -794,7 +914,7 @@ static void brush_painter_do_partial(BrushPainter *painter, ImBuf *oldtexibuf, i
 					xy[0] = x + xoff;
 					xy[1] = y + yoff;
 
-					brush_sample_tex(brush, xy, rgba, 0);
+					brush_sample_tex(scene, brush, xy, rgba, 0);
 					t[0]= FTOCHAR(rgba[0]);
 					t[1]= FTOCHAR(rgba[1]);
 					t[2]= FTOCHAR(rgba[2]);
@@ -812,11 +932,12 @@ static void brush_painter_do_partial(BrushPainter *painter, ImBuf *oldtexibuf, i
 
 static void brush_painter_fixed_tex_partial_update(BrushPainter *painter, float *pos)
 {
+	const Scene *scene= painter->scene;
 	Brush *brush= painter->brush;
 	BrushPainterCache *cache= &painter->cache;
 	ImBuf *oldtexibuf, *ibuf;
 	int imbflag, destx, desty, srcx, srcy, w, h, x1, y1, x2, y2;
-	const int diameter= 2*brush_size(brush);
+	const int diameter= 2*brush_size(scene, brush);
 
 	imbflag= (cache->flt)? IB_rectfloat: IB_rect;
 	if (!cache->ibuf)
@@ -866,13 +987,14 @@ static void brush_painter_fixed_tex_partial_update(BrushPainter *painter, float
 
 static void brush_painter_refresh_cache(BrushPainter *painter, float *pos, int use_color_correction)
 {
+	const Scene *scene= painter->scene;
 	Brush *brush= painter->brush;
 	BrushPainterCache *cache= &painter->cache;
 	MTex *mtex= &brush->mtex;
 	int size;
 	short flt;
-	const int diameter= 2*brush_size(brush);
-	const float alpha= brush_alpha(brush);
+	const int diameter= 2*brush_size(scene, brush);
+	const float alpha= brush_alpha(scene, brush);
 
 	if (diameter != cache->lastsize ||
 		alpha != cache->lastalpha ||
@@ -891,11 +1013,11 @@ static void brush_painter_refresh_cache(BrushPainter *painter, float *pos, int u
 		size= (cache->size)? cache->size: diameter;
 
 		if (brush->flag & BRUSH_FIXED_TEX) {
-			brush_imbuf_new(brush, flt, 3, size, &cache->maskibuf, use_color_correction);
+			brush_imbuf_new(scene, brush, flt, 3, size, &cache->maskibuf, use_color_correction);
 			brush_painter_fixed_tex_partial_update(painter, pos);
 		}
 		else
-			brush_imbuf_new(brush, flt, 2, size, &cache->ibuf, use_color_correction);
+			brush_imbuf_new(scene, brush, flt, 2, size, &cache->ibuf, use_color_correction);
 
 		cache->lastsize= diameter;
 		cache->lastalpha= alpha;
@@ -918,16 +1040,16 @@ void brush_painter_break_stroke(BrushPainter *painter)
 static void brush_apply_pressure(BrushPainter *painter, Brush *brush, float pressure)
 {
 	if (brush_use_alpha_pressure(painter->scene, brush)) 
-		brush_set_alpha(brush, MAX2(0.0f, painter->startalpha*pressure));
+		brush_set_alpha(painter->scene, brush, MAX2(0.0f, painter->startalpha*pressure));
 	if (brush_use_size_pressure(painter->scene, brush))
-		brush_set_size(brush, MAX2(1.0f, painter->startsize*pressure));
+		brush_set_size(painter->scene, brush, MAX2(1.0f, painter->startsize*pressure));
 	if (brush->flag & BRUSH_JITTER_PRESSURE)
 		brush->jitter = MAX2(0.0f, painter->startjitter*pressure);
 	if (brush->flag & BRUSH_SPACING_PRESSURE)
 		brush->spacing = MAX2(1.0f, painter->startspacing*(1.5f-pressure));
 }
 
-void brush_jitter_pos(Brush *brush, float pos[2], float jitterpos[2])
+void brush_jitter_pos(const Scene *scene, Brush *brush, float pos[2], float jitterpos[2])
 {
 	int use_jitter= brush->jitter != 0;
 
@@ -937,7 +1059,7 @@ void brush_jitter_pos(Brush *brush, float pos[2], float jitterpos[2])
 
 	if(use_jitter){
 		float rand_pos[2];
-		const int radius= brush_size(brush);
+		const int radius= brush_size(scene, brush);
 		const int diameter= 2*radius;
 
 		// find random position within a circle of diameter 1
@@ -956,6 +1078,7 @@ void brush_jitter_pos(Brush *brush, float pos[2], float jitterpos[2])
 
 int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, double time, float pressure, void *user, int use_color_correction)
 {
+	Scene *scene= painter->scene;
 	Brush *brush= painter->brush;
 	int totpaintops= 0;
 
@@ -1017,7 +1140,7 @@ int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, doubl
 	else {
 		float startdistance, spacing, step, paintpos[2], dmousepos[2], finalpos[2];
 		float t, len, press;
-		const int radius= brush_size(brush);
+		const int radius= brush_size(scene, brush);
 
 		/* compute brush spacing adapted to brush radius, spacing may depend
 		   on pressure, so update it */
@@ -1042,7 +1165,7 @@ int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, doubl
 				brush_apply_pressure(painter, brush, press);
 				spacing= MAX2(1.0f, radius)*brush->spacing*0.01f;
 
-				brush_jitter_pos(brush, paintpos, finalpos);
+				brush_jitter_pos(scene, brush, paintpos, finalpos);
 
 				if (painter->cache.enabled)
 					brush_painter_refresh_cache(painter, finalpos, use_color_correction);
@@ -1056,7 +1179,7 @@ int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, doubl
 				startdistance -= spacing;
 			}
 		} else {
-			brush_jitter_pos(brush, pos, finalpos);
+			brush_jitter_pos(scene, brush, pos, finalpos);
 
 			if (painter->cache.enabled)
 				brush_painter_refresh_cache(painter, finalpos, use_color_correction);
@@ -1084,7 +1207,7 @@ int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, doubl
 			while (painter->accumtime >= (double)brush->rate) {
 				brush_apply_pressure(painter, brush, pressure);
 
-				brush_jitter_pos(brush, pos, finalpos);
+				brush_jitter_pos(scene, brush, pos, finalpos);
 
 				if (painter->cache.enabled)
 					brush_painter_refresh_cache(painter, finalpos, use_color_correction);
@@ -1102,8 +1225,8 @@ int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, doubl
 	painter->lastmousepos[1]= pos[1];
 	painter->lastpressure= pressure;
 
-	brush_set_alpha(brush, painter->startalpha);
-	brush_set_size(brush, painter->startsize);
+	brush_set_alpha(scene, brush, painter->startalpha);
+	brush_set_size(scene, brush, painter->startsize);
 	brush->jitter = painter->startjitter;
 	brush->spacing = painter->startspacing;
 
@@ -1213,228 +1336,3 @@ struct ImBuf *brush_gen_radial_control_imbuf(Brush *br)
 
 	return im;
 }
-
-/* Unified Size and Strength */
-
-/* XXX, wouldnt it be better to only pass the active scene?
- * this can return any old scene! - campbell*/
-
-static short unified_settings(Brush *brush)
-{
-	Scene *sce;
-	for (sce= G.main->scene.first; sce; sce= sce->id.next) {
-		if (sce->toolsettings && 
-			ELEM4(brush,
-			    paint_brush(&(sce->toolsettings->imapaint.paint)),
-			    paint_brush(&(sce->toolsettings->vpaint->paint)),
-			    paint_brush(&(sce->toolsettings->wpaint->paint)),
-			    paint_brush(&(sce->toolsettings->sculpt->paint))))
-		{
-			return sce->toolsettings->unified_paint_settings.flag;
-		}
-	}
-
-	return 0;
-}
-
-// XXX: be careful about setting size and unprojected radius
-// because they depend on one another
-// these functions do not set the other corresponding value
-// this can lead to odd behavior if size and unprojected
-// radius become inconsistent.
-// the biggest problem is that it isn't possible to change
-// unprojected radius because a view context is not
-// available.  my ussual solution to this is to use the
-// ratio of change of the size to change the unprojected
-// radius.  Not completely convinced that is correct.
-// In anycase, a better solution is needed to prevent
-// inconsistency.
-
-static void set_unified_size(Brush *brush, int value)
-{
-	Scene *sce;
-	for (sce= G.main->scene.first; sce; sce= sce->id.next) {
-		if (sce->toolsettings && 
-			ELEM4(brush,
-			    paint_brush(&(sce->toolsettings->imapaint.paint)),
-			    paint_brush(&(sce->toolsettings->vpaint->paint)),
-			    paint_brush(&(sce->toolsettings->wpaint->paint)),
-			    paint_brush(&(sce->toolsettings->sculpt->paint))))
-		{
-			sce->toolsettings->unified_paint_settings.size= value;
-		}
-	}
-}
-
-static int unified_size(Brush *brush)
-{
-	Scene *sce;
-	for (sce= G.main->scene.first; sce; sce= sce->id.next) {
-		if (sce->toolsettings && 
-			ELEM4(brush,
-			    paint_brush(&(sce->toolsettings->imapaint.paint)),
-			    paint_brush(&(sce->toolsettings->vpaint->paint)),
-			    paint_brush(&(sce->toolsettings->wpaint->paint)),
-			    paint_brush(&(sce->toolsettings->sculpt->paint))))
-		{
-			return sce->toolsettings->unified_paint_settings.size;
-		}
-	}
-
-	return 35; // XXX magic number
-}
-
-static void set_unified_alpha(Brush *brush, float value)
-{
-	Scene *sce;
-	for (sce= G.main->scene.first; sce; sce= sce->id.next) {
-		if (sce->toolsettings && 
-			ELEM4(brush,
-			    paint_brush(&(sce->toolsettings->imapaint.paint)),
-			    paint_brush(&(sce->toolsettings->vpaint->paint)),
-			    paint_brush(&(sce->toolsettings->wpaint->paint)),
-			    paint_brush(&(sce->toolsettings->sculpt->paint))))
-		{
-			sce->toolsettings->unified_paint_settings.alpha= value;
-		}
-	}
-}
-
-static float unified_alpha(Brush *brush)
-{
-	Scene *sce;
-	for (sce= G.main->scene.first; sce; sce= sce->id.next) {
-		if (sce->toolsettings && 
-			ELEM4(brush,
-			    paint_brush(&(sce->toolsettings->imapaint.paint)),
-			    paint_brush(&(sce->toolsettings->vpaint->paint)),
-			    paint_brush(&(sce->toolsettings->wpaint->paint)),
-			    paint_brush(&(sce->toolsettings->sculpt->paint))))
-		{
-			return sce->toolsettings->unified_paint_settings.alpha;
-		}
-	}
-
-	return 0.5f; // XXX magic number
-}
-
-static void set_unified_unprojected_radius(Brush *brush, float value)
-{
-	Scene *sce;
-	for (sce= G.main->scene.first; sce; sce= sce->id.next) {
-		if (sce->toolsettings && 
-			ELEM4(brush,
-			    paint_brush(&(sce->toolsettings->imapaint.paint)),
-			    paint_brush(&(sce->toolsettings->vpaint->paint)),
-			    paint_brush(&(sce->toolsettings->wpaint->paint)),
-			    paint_brush(&(sce->toolsettings->sculpt->paint))))
-		{
-			sce->toolsettings->unified_paint_settings.unprojected_radius= value;
-		}
-	}
-}
-
-static float unified_unprojected_radius(Brush *brush)
-{
-	Scene *sce;
-	for (sce= G.main->scene.first; sce; sce= sce->id.next) {
-		if (sce->toolsettings && 
-			ELEM4(brush,
-			    paint_brush(&(sce->toolsettings->imapaint.paint)),
-			    paint_brush(&(sce->toolsettings->vpaint->paint)),
-			    paint_brush(&(sce->toolsettings->wpaint->paint)),
-			    paint_brush(&(sce->toolsettings->sculpt->paint))))
-		{
-			return sce->toolsettings->unified_paint_settings.unprojected_radius;
-		}
-	}
-
-	return 0.125f; // XXX magic number
-}
-void brush_set_size(Brush *brush, int size)
-{
-	const short us_flag = unified_settings(brush);
-
-	if (us_flag & UNIFIED_PAINT_SIZE)
-		set_unified_size(brush, size);
-	else
-		brush->size= size;
-
-	//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
-}
-
-int brush_size(Brush *brush)
-{
-	const short us_flag = unified_settings(brush);
-
-	return (us_flag & UNIFIED_PAINT_SIZE) ? unified_size(brush) : brush->size;
-}
-
-int brush_use_locked_size(const Scene *scene, Brush *brush)
-{
-	const short us_flag = scene->toolsettings->unified_paint_settings.flag;
-
-	return (us_flag & UNIFIED_PAINT_SIZE) ?
-	        (us_flag & UNIFIED_PAINT_BRUSH_LOCK_SIZE) :
-	        (brush->flag & BRUSH_LOCK_SIZE);
-}
-
-int brush_use_size_pressure(const Scene *scene, Brush *brush)
-{
-	const short us_flag = scene->toolsettings->unified_paint_settings.flag;
-
-	return (us_flag & UNIFIED_PAINT_SIZE) ?
-	        (us_flag & UNIFIED_PAINT_BRUSH_SIZE_PRESSURE) :
-	        (brush->flag & BRUSH_SIZE_PRESSURE);
-}
-
-int brush_use_alpha_pressure(const Scene *scene, Brush *brush)
-{
-	const short us_flag = scene->toolsettings->unified_paint_settings.flag;
-
-	return (us_flag & UNIFIED_PAINT_ALPHA) ?
-	        (us_flag & UNIFIED_PAINT_BRUSH_ALPHA_PRESSURE) :
-	        (brush->flag & BRUSH_ALPHA_PRESSURE);
-}
-
-void brush_set_unprojected_radius(Brush *brush, float unprojected_radius)
-{
-	const short us_flag = unified_settings(brush);
-
-	if (us_flag & UNIFIED_PAINT_SIZE)
-		set_unified_unprojected_radius(brush, unprojected_radius);
-	else
-		brush->unprojected_radius= unprojected_radius;
-
-	//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
-}
-
-float brush_unprojected_radius(Brush *brush)
-{
-	const short us_flag = unified_settings(brush);
-
-	return (us_flag & UNIFIED_PAINT_SIZE) ?
-	        unified_unprojected_radius(brush) :
-	        brush->unprojected_radius;
-}
-
-void brush_set_alpha(Brush *brush, float alpha)
-{
-	const short us_flag = unified_settings(brush);
-
-	if (us_flag & UNIFIED_PAINT_ALPHA)
-		set_unified_alpha(brush, alpha);
-	else
-		brush->alpha= alpha;
-
-	//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
-}
-
-float brush_alpha(Brush *brush)
-{
-	const short us_flag = unified_settings(brush);
-
-	return (us_flag & UNIFIED_PAINT_ALPHA) ?
-	        unified_alpha(brush) :
-	        brush->alpha;
-}
diff --git a/source/blender/editors/physics/physics_ops.c b/source/blender/editors/physics/physics_ops.c
index ba0465b866f..09f99a58dd7 100644
--- a/source/blender/editors/physics/physics_ops.c
+++ b/source/blender/editors/physics/physics_ops.c
@@ -116,11 +116,11 @@ static void keymap_particle(wmKeyConfig *keyconf)
 
 	/* size radial control */
 	kmi = WM_keymap_add_item(keymap, "WM_OT_radial_control", FKEY, KM_PRESS, 0, 0);
-	RNA_string_set(kmi->ptr, "data_path", "tool_settings.particle_edit.brush.size");
+	RNA_string_set(kmi->ptr, "data_path_primary", "tool_settings.particle_edit.brush.size");
 
 	/* size radial control */
 	kmi = WM_keymap_add_item(keymap, "WM_OT_radial_control", FKEY, KM_PRESS, KM_SHIFT, 0);
-	RNA_string_set(kmi->ptr, "data_path", "tool_settings.particle_edit.brush.strength");
+	RNA_string_set(kmi->ptr, "data_path_primary", "tool_settings.particle_edit.brush.strength");
 
 	WM_keymap_add_menu(keymap, "VIEW3D_MT_particle_specials", WKEY, KM_PRESS, 0, 0);
 	
diff --git a/source/blender/editors/sculpt_paint/paint_image.c b/source/blender/editors/sculpt_paint/paint_image.c
index 5acc690807e..8eeca2e4e15 100644
--- a/source/blender/editors/sculpt_paint/paint_image.c
+++ b/source/blender/editors/sculpt_paint/paint_image.c
@@ -2937,7 +2937,7 @@ static void project_paint_begin(ProjPaintState *ps)
 	
 	MemArena *arena; /* at the moment this is just ps->arena_mt[0], but use this to show were not multithreading */
 
-	const int diameter= 2*brush_size(ps->brush);
+	const int diameter= 2*brush_size(ps->scene, ps->brush);
 	
 	/* ---- end defines ---- */
 	
@@ -3580,7 +3580,7 @@ static int project_bucket_iter_init(ProjPaintState *ps, const float mval_f[2])
 {
 	if(ps->source==PROJ_SRC_VIEW) {
 		float min_brush[2], max_brush[2];
-		const float radius = (float)brush_size(ps->brush);
+		const float radius = (float)brush_size(ps->scene, ps->brush);
 
 		/* so we dont have a bucket bounds that is way too small to paint into */
 		// if (radius < 1.0f) radius = 1.0f; // this doesn't work yet :/
@@ -3618,7 +3618,7 @@ static int project_bucket_iter_init(ProjPaintState *ps, const float mval_f[2])
 
 static int project_bucket_iter_next(ProjPaintState *ps, int *bucket_index, rctf *bucket_bounds, const float mval[2])
 {
-	const int diameter= 2*brush_size(ps->brush);
+	const int diameter= 2*brush_size(ps->scene, ps->brush);
 
 	if (ps->thread_tot > 1)
 		BLI_lock_thread(LOCK_CUSTOM1);
@@ -3844,7 +3844,7 @@ static void *do_projectpaint_thread(void *ph_v)
 	float co[2];
 	float mask = 1.0f; /* airbrush wont use mask */
 	unsigned short mask_short;
-	const float radius= (float)brush_size(ps->brush);
+	const float radius= (float)brush_size(ps->scene, ps->brush);
 	const float radius_squared= radius*radius; /* avoid a square root with every dist comparison */
 	
 	short lock_alpha= ELEM(ps->brush->blend, IMB_BLEND_ERASE_ALPHA, IMB_BLEND_ADD_ALPHA) ? 0 : ps->brush->flag & BRUSH_LOCK_ALPHA;
@@ -3903,7 +3903,7 @@ static void *do_projectpaint_thread(void *ph_v)
 					if (falloff > 0.0f) {
 						if (ps->is_texbrush) {
 							/* note, for clone and smear, we only use the alpha, could be a special function */
-							brush_sample_tex(ps->brush, projPixel->projCoSS, rgba, thread_index);
+							brush_sample_tex(ps->scene, ps->brush, projPixel->projCoSS, rgba, thread_index);
 							alpha = rgba[3];
 						} else {
 							alpha = 1.0f;
@@ -3911,7 +3911,7 @@ static void *do_projectpaint_thread(void *ph_v)
 						
 						if (ps->is_airbrush) {
 							/* for an aurbrush there is no real mask, so just multiply the alpha by it */
-							alpha *= falloff * brush_alpha(ps->brush);
+							alpha *= falloff * brush_alpha(ps->scene, ps->brush);
 							mask = ((float)projPixel->mask)/65535.0f;
 						}
 						else {
@@ -3919,7 +3919,7 @@ static void *do_projectpaint_thread(void *ph_v)
 							falloff = 1.0f - falloff;
 							falloff = 1.0f - (falloff * falloff);
 							
-							mask_short = (unsigned short)(projPixel->mask * (brush_alpha(ps->brush) * falloff));
+							mask_short = (unsigned short)(projPixel->mask * (brush_alpha(ps->scene, ps->brush) * falloff));
 							if (mask_short > projPixel->mask_max) {
 								mask = ((float)mask_short)/65535.0f;
 								projPixel->mask_max = mask_short;
@@ -4801,7 +4801,7 @@ static int texture_paint_init(bContext *C, wmOperator *op)
 	if(pop->mode == PAINT_MODE_3D && (pop->s.tool == PAINT_TOOL_CLONE))
 		pop->s.tool = PAINT_TOOL_DRAW;
 	pop->s.blend = brush->blend;
-	pop->orig_brush_size= brush_size(brush);
+	pop->orig_brush_size= brush_size(scene, brush);
 
 	if(pop->mode != PAINT_MODE_2D) {
 		pop->s.ob = OBACT;
@@ -4837,8 +4837,8 @@ static int texture_paint_init(bContext *C, wmOperator *op)
 			return 0;
 
 		/* Dont allow brush size below 2 */
-		if (brush_size(brush) < 2)
-			brush_set_size(brush, 2);
+		if (brush_size(scene, brush) < 2)
+			brush_set_size(scene, brush, 2);
 
 		/* allocate and initialize spacial data structures */
 		project_paint_begin(&pop->ps);
@@ -4922,7 +4922,7 @@ static void paint_exit(bContext *C, wmOperator *op)
 	brush_painter_free(pop->painter);
 
 	if(pop->mode == PAINT_MODE_3D_PROJECT) {
-		brush_set_size(pop->ps.brush, pop->orig_brush_size);
+		brush_set_size(scene, pop->ps.brush, pop->orig_brush_size);
 		paint_brush_exit_tex(pop->ps.brush);
 		
 		project_paint_end(&pop->ps);
@@ -5111,12 +5111,13 @@ static void brush_drawcursor(bContext *C, int x, int y, void *UNUSED(customdata)
 #define PX_SIZE_FADE_MAX 12.0f
 #define PX_SIZE_FADE_MIN 4.0f
 
+	Scene *scene= CTX_data_scene(C);
 	Brush *brush= image_paint_brush(C);
-	Paint *paint= paint_get_active(CTX_data_scene(C));
+	Paint *paint= paint_get_active(scene);
 
 	if(paint && brush && paint->flags & PAINT_SHOW_BRUSH) {
 		float zoomx, zoomy;
-		const float size= (float)brush_size(brush);
+		const float size= (float)brush_size(scene, brush);
 		const short use_zoom= get_imapaint_zoom(C, &zoomx, &zoomy);
 		const float pixel_size= MAX2(size * zoomx, size * zoomy);
 		float alpha= 0.5f;
@@ -5570,8 +5571,8 @@ static int texture_paint_camera_project_exec(bContext *C, wmOperator *op)
 	/* override */
 	ps.is_texbrush= 0;
 	ps.is_airbrush= 1;
-	orig_brush_size= brush_size(ps.brush);
-	brush_set_size(ps.brush, 32); /* cover the whole image */
+	orig_brush_size= brush_size(scene, ps.brush);
+	brush_set_size(scene, ps.brush, 32); /* cover the whole image */
 
 	ps.tool= PAINT_TOOL_DRAW; /* so pixels are initialized with minimal info */
 
@@ -5584,7 +5585,7 @@ static int texture_paint_camera_project_exec(bContext *C, wmOperator *op)
 	project_paint_begin(&ps);
 
 	if(ps.dm==NULL) {
-		brush_set_size(ps.brush, orig_brush_size);
+		brush_set_size(scene, ps.brush, orig_brush_size);
 		return OPERATOR_CANCELLED;
 	}
 	else {
@@ -5608,7 +5609,7 @@ static int texture_paint_camera_project_exec(bContext *C, wmOperator *op)
 	project_paint_end(&ps);
 
 	scene->toolsettings->imapaint.flag &= ~IMAGEPAINT_DRAWING;
-	brush_set_size(ps.brush, orig_brush_size);
+	brush_set_size(scene, ps.brush, orig_brush_size);
 
 	return OPERATOR_FINISHED;
 }
diff --git a/source/blender/editors/sculpt_paint/paint_ops.c b/source/blender/editors/sculpt_paint/paint_ops.c
index eb20465a2ab..e81e1f6dc77 100644
--- a/source/blender/editors/sculpt_paint/paint_ops.c
+++ b/source/blender/editors/sculpt_paint/paint_ops.c
@@ -89,7 +89,8 @@ static void BRUSH_OT_add(wmOperatorType *ot)
 
 static int brush_scale_size_exec(bContext *C, wmOperator *op)
 {
-	Paint  *paint=  paint_get_active(CTX_data_scene(C));
+	Scene *scene = CTX_data_scene(C);
+	Paint  *paint=  paint_get_active(scene);
 	struct Brush  *brush=  paint_brush(paint);
 	// Object *ob=     CTX_data_active_object(C);
 	float   scalar= RNA_float_get(op->ptr, "scalar");
@@ -97,7 +98,7 @@ static int brush_scale_size_exec(bContext *C, wmOperator *op)
 	if (brush) {
 		// pixel radius
 		{
-			const int old_size= brush_size(brush);
+			const int old_size= brush_size(scene, brush);
 			int size= (int)(scalar*old_size);
 
 			if (old_size == size) {
@@ -110,17 +111,17 @@ static int brush_scale_size_exec(bContext *C, wmOperator *op)
 			}
 			CLAMP(size, 1, 2000); // XXX magic number
 
-			brush_set_size(brush, size);
+			brush_set_size(scene, brush, size);
 		}
 
 		// unprojected radius
 		{
-			float unprojected_radius= scalar*brush_unprojected_radius(brush);
+			float unprojected_radius= scalar*brush_unprojected_radius(scene, brush);
 
 			if (unprojected_radius < 0.001f) // XXX magic number
 				unprojected_radius= 0.001f;
 
-			brush_set_unprojected_radius(brush, unprojected_radius);
+			brush_set_unprojected_radius(scene, brush, unprojected_radius);
 		}
 	}
 
@@ -475,7 +476,7 @@ typedef enum {
 } RCFlags;
 
 static void set_brush_rc_path(PointerRNA *ptr, const char *brush_path,
-			      const char *output_name, const char *input_name)
+							  const char *output_name, const char *input_name)
 {
 	char *path;
 
@@ -485,21 +486,35 @@ static void set_brush_rc_path(PointerRNA *ptr, const char *brush_path,
 }
 
 static void set_brush_rc_props(PointerRNA *ptr, const char *paint,
-			       const char *prop, RCFlags flags)
+							   const char *prop, const char *secondary_prop,
+							   RCFlags flags)
 {
+	const char *ups_path = "tool_settings.unified_paint_settings";
 	char *brush_path;
 
 	brush_path = BLI_sprintfN("tool_settings.%s.brush", paint);
 
-	set_brush_rc_path(ptr, brush_path, "data_path", prop);
+	set_brush_rc_path(ptr, brush_path, "data_path_primary", prop);
+	if(secondary_prop) {
+		set_brush_rc_path(ptr, ups_path, "use_secondary", secondary_prop);
+		set_brush_rc_path(ptr, ups_path, "data_path_secondary", prop);
+	}
+	else {
+		RNA_string_set(ptr, "use_secondary", "");
+		RNA_string_set(ptr, "data_path_secondary", "");
+	}
 	set_brush_rc_path(ptr, brush_path, "color_path", "cursor_color_add");
 	set_brush_rc_path(ptr, brush_path, "rotation_path", "texture_slot.angle");
 	RNA_string_set(ptr, "image_id", brush_path);
 
 	if(flags & RC_COLOR)
 		set_brush_rc_path(ptr, brush_path, "fill_color_path", "color");
+	else
+		RNA_string_set(ptr, "fill_color_path", "");
 	if(flags & RC_ZOOM)
 		RNA_string_set(ptr, "zoom_path", "space_data.zoom");
+	else
+		RNA_string_set(ptr, "zoom_path", "");
 
 	MEM_freeN(brush_path);
 }
@@ -510,14 +525,14 @@ static void ed_keymap_paint_brush_radial_control(wmKeyMap *keymap, const char *p
 	wmKeyMapItem *kmi;
 
 	kmi = WM_keymap_add_item(keymap, "WM_OT_radial_control", FKEY, KM_PRESS, 0, 0);
-	set_brush_rc_props(kmi->ptr, paint, "size", flags);
+	set_brush_rc_props(kmi->ptr, paint, "size", "use_unified_size", flags);
 
 	kmi = WM_keymap_add_item(keymap, "WM_OT_radial_control", FKEY, KM_PRESS, KM_SHIFT, 0);
-	set_brush_rc_props(kmi->ptr, paint, "strength", flags);
+	set_brush_rc_props(kmi->ptr, paint, "strength", "use_unified_strength", flags);
 
 	if(flags & RC_ROTATION) {
 		kmi = WM_keymap_add_item(keymap, "WM_OT_radial_control", FKEY, KM_PRESS, KM_CTRL, 0);
-		set_brush_rc_props(kmi->ptr, paint, "texture_slot.angle", flags);
+		set_brush_rc_props(kmi->ptr, paint, "texture_slot.angle", NULL, flags);
 	}
 }
 
diff --git a/source/blender/editors/sculpt_paint/paint_stroke.c b/source/blender/editors/sculpt_paint/paint_stroke.c
index ca5abc16ec8..c3e0c35f524 100644
--- a/source/blender/editors/sculpt_paint/paint_stroke.c
+++ b/source/blender/editors/sculpt_paint/paint_stroke.c
@@ -123,19 +123,19 @@ static int same_snap(Snapshot* snap, Brush* brush, ViewContext* vc)
 {
 	MTex* mtex = &brush->mtex;
 
-	return  ( (mtex->tex) &&
-	          equals_v3v3(mtex->ofs, snap->ofs) &&
-	          equals_v3v3(mtex->size, snap->size) &&
-	          mtex->rot == snap->rot
-	          ) &&
-
-	        /* make brush smaller shouldn't cause a resample */
-	        ( (mtex->brush_map_mode == MTEX_MAP_MODE_FIXED && (brush_size(brush) <= snap->brush_size)) ||
-	          (brush_size(brush) == snap->brush_size)) &&
-
-	        (mtex->brush_map_mode == snap->brush_map_mode) &&
-	        (vc->ar->winx == snap->winx) &&
-	        (vc->ar->winy == snap->winy);
+	return (((mtex->tex) &&
+			 equals_v3v3(mtex->ofs, snap->ofs) &&
+			 equals_v3v3(mtex->size, snap->size) &&
+			 mtex->rot == snap->rot) &&
+
+			/* make brush smaller shouldn't cause a resample */
+			((mtex->brush_map_mode == MTEX_MAP_MODE_FIXED &&
+			  (brush_size(vc->scene, brush) <= snap->brush_size)) ||
+			 (brush_size(vc->scene, brush) == snap->brush_size)) &&
+
+			(mtex->brush_map_mode == snap->brush_map_mode) &&
+			(vc->ar->winx == snap->winx) &&
+			(vc->ar->winy == snap->winy));
 }
 
 static void make_snap(Snapshot* snap, Brush* brush, ViewContext* vc)
@@ -153,7 +153,7 @@ static void make_snap(Snapshot* snap, Brush* brush, ViewContext* vc)
 		snap->rot = -1;
 	}
 
-	snap->brush_size = brush_size(brush);
+	snap->brush_size = brush_size(vc->scene, brush);
 	snap->winx = vc->ar->winx;
 	snap->winy = vc->ar->winy;
 }
@@ -198,7 +198,7 @@ static int load_tex(Sculpt *sd, Brush* br, ViewContext* vc)
 		make_snap(&snap, br, vc);
 
 		if (br->mtex.brush_map_mode == MTEX_MAP_MODE_FIXED) {
-			int s = brush_size(br);
+			int s = brush_size(vc->scene, br);
 			int r = 1;
 
 			for (s >>= 1; s > 0; s >>= 1)
@@ -239,7 +239,7 @@ static int load_tex(Sculpt *sd, Brush* br, ViewContext* vc)
 				// largely duplicated from tex_strength
 
 				const float rotation = -br->mtex.rot;
-				float radius = brush_size(br);
+				float radius = brush_size(vc->scene, br);
 				int index = j*size + i;
 				float x;
 				float avg;
@@ -373,6 +373,7 @@ static int sculpt_get_brush_geometry(bContext* C, int x, int y, int* pixel_radiu
 			      float location[3])
 {
 	struct PaintStroke *stroke;
+	const Scene *scene = CTX_data_scene(C);
 	float window[2];
 	int hit;
 
@@ -384,11 +385,11 @@ static int sculpt_get_brush_geometry(bContext* C, int x, int y, int* pixel_radiu
 	if(stroke->vc.obact->sculpt && stroke->vc.obact->sculpt->pbvh &&
 	   sculpt_stroke_get_location(C, stroke, location, window)) {
 		*pixel_radius = project_brush_radius(stroke->vc.rv3d,
-						     brush_unprojected_radius(stroke->brush),
+						     brush_unprojected_radius(scene, stroke->brush),
 						     location, &stroke->mats);
 
 		if (*pixel_radius == 0)
-			*pixel_radius = brush_size(stroke->brush);
+			*pixel_radius = brush_size(scene, stroke->brush);
 
 		mul_m4_v3(stroke->vc.obact->obmat, location);
 
@@ -398,7 +399,7 @@ static int sculpt_get_brush_geometry(bContext* C, int x, int y, int* pixel_radiu
 		Sculpt* sd    = CTX_data_tool_settings(C)->sculpt;
 		Brush*  brush = paint_brush(&sd->paint);
 
-		*pixel_radius = brush_size(brush);
+		*pixel_radius = brush_size(scene, brush);
 		hit = 0;
 	}
 
@@ -468,7 +469,7 @@ static void paint_draw_alpha_overlay(Sculpt *sd, Brush *brush,
 				quad.ymax = aim[1]+sd->anchored_size - win->ymin;
 			}
 			else {
-				const int radius= brush_size(brush);
+				const int radius= brush_size(vc->scene, brush);
 				quad.xmin = x - radius;
 				quad.ymin = y - radius;
 				quad.xmax = x + radius;
@@ -524,7 +525,7 @@ static void paint_cursor_on_hit(Sculpt *sd, Brush *brush, ViewContext *vc,
 		if(brush->flag & BRUSH_ANCHORED)
 			projected_radius = 8;
 		else
-			projected_radius = brush_size(brush);
+			projected_radius = brush_size(vc->scene, brush);
 	}
 	unprojected_radius = paint_calc_object_space_radius(vc, location,
 							    projected_radius);
@@ -533,7 +534,7 @@ static void paint_cursor_on_hit(Sculpt *sd, Brush *brush, ViewContext *vc,
 		unprojected_radius *= sd->pressure_value;
 
 	if(!brush_use_locked_size(vc->scene, brush))
-		brush_set_unprojected_radius(brush, unprojected_radius);
+		brush_set_unprojected_radius(vc->scene, brush, unprojected_radius);
 }
 
 static void paint_draw_cursor(bContext *C, int x, int y, void *UNUSED(unused))
@@ -551,7 +552,7 @@ static void paint_draw_cursor(bContext *C, int x, int y, void *UNUSED(unused))
 	translation[1] = y;
 	outline_alpha = 0.5;
 	outline_col = brush->add_col;
-	final_radius = brush_size(brush);
+	final_radius = brush_size(scene, brush);
 
 	/* check that brush drawing is enabled */
 	if(!(paint->flags & PAINT_SHOW_BRUSH))
@@ -567,7 +568,7 @@ static void paint_draw_cursor(bContext *C, int x, int y, void *UNUSED(unused))
 		Sculpt *sd = CTX_data_tool_settings(C)->sculpt;
 		float location[3];
 		int pixel_radius, hit;
-		const float root_alpha = brush_alpha(brush);
+		const float root_alpha = brush_alpha(scene, brush);
 		float visual_strength = root_alpha*root_alpha;
 		const float min_alpha = 0.20f;
 		const float max_alpha = 0.80f;
@@ -599,7 +600,7 @@ static void paint_draw_cursor(bContext *C, int x, int y, void *UNUSED(unused))
 		paint_draw_alpha_overlay(sd, brush, &vc, x, y);
 
 		if(brush_use_locked_size(scene, brush))
-			brush_set_size(brush, pixel_radius);
+			brush_set_size(scene, brush, pixel_radius);
 
 		/* check if brush is subtracting, use different color then */
 		/* TODO: no way currently to know state of pen flip or
@@ -669,7 +670,8 @@ static float event_tablet_data(wmEvent *event, int *pen_flip)
 /* Put the location of the next stroke dot into the stroke RNA and apply it to the mesh */
 static void paint_brush_stroke_add_step(bContext *C, wmOperator *op, wmEvent *event, float mouse_in[2])
 {
-	Paint *paint = paint_get_active(CTX_data_scene(C));
+	Scene *scene = CTX_data_scene(C);
+	Paint *paint = paint_get_active(scene);
 	Brush *brush = paint_brush(paint);
 	PaintStroke *stroke = op->customdata;
 	float mouse[3];
@@ -686,7 +688,7 @@ static void paint_brush_stroke_add_step(bContext *C, wmOperator *op, wmEvent *ev
 	if(stroke->vc.obact->sculpt) {
 		float delta[2];
 
-		brush_jitter_pos(brush, mouse_in, mouse);
+		brush_jitter_pos(scene, brush, mouse_in, mouse);
 
 		/* XXX: meh, this is round about because
 		   brush_jitter_pos isn't written in the best way to
@@ -775,7 +777,7 @@ static int paint_space_stroke(bContext *C, wmOperator *op, wmEvent *event, const
 				pressure = event_tablet_data(event, NULL);
 			
 			if(pressure > FLT_EPSILON) {
-				scale = (brush_size(stroke->brush)*pressure*stroke->brush->spacing/50.0f) / length;
+				scale = (brush_size(scene, stroke->brush)*pressure*stroke->brush->spacing/50.0f) / length;
 				if(scale > FLT_EPSILON) {
 					mul_v2_fl(vec, scale);
 
diff --git a/source/blender/editors/sculpt_paint/paint_vertex.c b/source/blender/editors/sculpt_paint/paint_vertex.c
index 21b27b2d3d3..2f98ee16d45 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex.c
@@ -654,7 +654,7 @@ static unsigned int mcol_darken(unsigned int col1, unsigned int col2, int fac)
 	return col;
 }
 
-static void vpaint_blend(VPaint *vp, unsigned int *col, unsigned int *colorig, unsigned int paintcol, int alpha)
+static void vpaint_blend(Scene *scene, VPaint *vp, unsigned int *col, unsigned int *colorig, unsigned int paintcol, int alpha)
 {
 	Brush *brush = paint_brush(&vp->paint);
 
@@ -670,7 +670,7 @@ static void vpaint_blend(VPaint *vp, unsigned int *col, unsigned int *colorig, u
 		unsigned int testcol=0, a;
 		char *cp, *ct, *co;
 		
-		alpha= (int)(255.0f*brush_alpha(brush));
+		alpha= (int)(255.0f*brush_alpha(scene, brush));
 		
 		if(brush->vertexpaint_tool==VP_MIX || brush->vertexpaint_tool==VP_BLUR) testcol= mcol_blend( *colorig, paintcol, alpha);
 		else if(brush->vertexpaint_tool==VP_ADD) testcol= mcol_add( *colorig, paintcol, alpha);
@@ -787,7 +787,7 @@ static float calc_vp_alpha_dl(VPaint *vp, ViewContext *vc,
 	return 0.0f;
 }
 
-static void wpaint_blend(VPaint *wp, MDeformWeight *dw, MDeformWeight *dw_prev, float alpha, float paintval, int flip, int multipaint)
+static void wpaint_blend(Scene *scene, VPaint *wp, MDeformWeight *dw, MDeformWeight *dw_prev, float alpha, float paintval, int flip, int multipaint)
 {
 	Brush *brush = paint_brush(&wp->paint);
 	int tool = brush->vertexpaint_tool;
@@ -832,7 +832,7 @@ static void wpaint_blend(VPaint *wp, MDeformWeight *dw, MDeformWeight *dw_prev,
 	if((wp->flag & VP_SPRAY)==0) {
 		float testw=0.0f;
 		
-		alpha= brush_alpha(brush);
+		alpha= brush_alpha(scene, brush);
 		if(tool==VP_MIX || tool==VP_BLUR)
 			testw = paintval*alpha + dw_prev->weight*(1.0f-alpha);
 		else if(tool==VP_ADD)
@@ -1596,7 +1596,8 @@ static char *wpaint_make_validmap(Object *ob);
 
 
 static void do_weight_paint_vertex( /* vars which remain the same for every vert */
-                                   VPaint *wp, Object *ob, const WeightPaintInfo *wpi,
+                                   Scene *scene, VPaint *wp, Object *ob,
+								   const WeightPaintInfo *wpi,
                                     /* vars which change on each stroke */
                                    const unsigned int index, float alpha, float paintweight
                                    )
@@ -1685,7 +1686,7 @@ static void do_weight_paint_vertex( /* vars which remain the same for every vert
 	if ( (wpi->do_multipaint == FALSE || wpi->defbase_tot_sel <= 1) &&
 	     (wpi->lock_flags == NULL || has_locked_group(dv, wpi->defbase_tot, wpi->vgroup_validmap, wpi->lock_flags) == FALSE))
 	{
-		wpaint_blend(wp, dw, dw_prev, alpha, paintweight, wpi->do_flip, FALSE);
+		wpaint_blend(scene, wp, dw, dw_prev, alpha, paintweight, wpi->do_flip, FALSE);
 
 		/* WATCH IT: take care of the ordering of applying mirror -> normalize,
 		 * can give wrong results [#26193], least confusing if normalize is done last */
@@ -1750,7 +1751,7 @@ static void do_weight_paint_vertex( /* vars which remain the same for every vert
 		MDeformVert dv_copy= {NULL};
 
 		oldw = dw->weight;
-		wpaint_blend(wp, dw, dw_prev, alpha, paintweight, wpi->do_flip, wpi->do_multipaint && wpi->defbase_tot_sel >1);
+		wpaint_blend(scene, wp, dw, dw_prev, alpha, paintweight, wpi->do_flip, wpi->do_multipaint && wpi->defbase_tot_sel >1);
 		neww = dw->weight;
 		dw->weight = oldw;
 		
@@ -2091,7 +2092,7 @@ static int wpaint_stroke_test_start(bContext *C, wmOperator *op, wmEvent *UNUSED
 
 static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
 {
-	const Scene *scene= CTX_data_scene(C);
+	Scene *scene= CTX_data_scene(C);
 	ToolSettings *ts= CTX_data_tool_settings(C);
 	VPaint *wp= ts->wpaint;
 	Brush *brush = paint_brush(&wp->paint);
@@ -2110,8 +2111,8 @@ static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, P
 	char *defbase_sel;
 
 	const float pressure = RNA_float_get(itemptr, "pressure");
-	const float brush_size_final = brush_size(brush) * (brush_use_size_pressure(scene, brush) ? pressure : 1.0f);
-	const float brush_alpha_final = brush_alpha(brush) * (brush_use_alpha_pressure(scene, brush) ? pressure : 1.0f);
+	const float brush_size_final = brush_size(scene, brush) * (brush_use_size_pressure(scene, brush) ? pressure : 1.0f);
+	const float brush_alpha_final = brush_alpha(scene, brush) * (brush_use_alpha_pressure(scene, brush) ? pressure : 1.0f);
 
 	/* intentionally dont initialize as NULL, make sure we initialize all members below */
 	WeightPaintInfo wpi;
@@ -2265,7 +2266,7 @@ static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, P
 					alpha= calc_vp_alpha_dl(wp, vc, wpd->wpimat, wpd->vertexcosnos+6*vidx,
 					                        mval, brush_size_final, brush_alpha_final);
 					if(alpha) {
-						do_weight_paint_vertex(wp, ob, &wpi, vidx, alpha, paintweight);
+						do_weight_paint_vertex(scene, wp, ob, &wpi, vidx, alpha, paintweight);
 					}
 					me->dvert[vidx].flag= 0;
 				}
@@ -2556,7 +2557,7 @@ static void vpaint_paint_face(VPaint *vp, VPaintData *vpd, Object *ob,
 		alpha = calc_vp_alpha_dl(vp, vc, vpd->vpimat, vpd->vertexcosnos+6*(&mface->v1)[i],
 		                         mval, brush_size_final, brush_alpha_final);
 		if(alpha) {
-			vpaint_blend(vp, mcol+i, mcolorig+i, vpd->paintcol, (int)(alpha*255.0f));
+			vpaint_blend(vc->scene, vp, mcol+i, mcolorig+i, vpd->paintcol, (int)(alpha*255.0f));
 		}
 	}
 }
@@ -2577,8 +2578,8 @@ static void vpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, P
 	float mval[2];
 
 	const float pressure = RNA_float_get(itemptr, "pressure");
-	const float brush_size_final = brush_size(brush) * (brush_use_size_pressure(scene, brush) ? pressure : 1.0f);
-	const float brush_alpha_final = brush_alpha(brush) * (brush_use_alpha_pressure(scene, brush) ? pressure : 1.0f);
+	const float brush_size_final = brush_size(scene, brush) * (brush_use_size_pressure(scene, brush) ? pressure : 1.0f);
+	const float brush_alpha_final = brush_alpha(scene, brush) * (brush_use_alpha_pressure(scene, brush) ? pressure : 1.0f);
 
 	RNA_float_get_array(itemptr, "mouse", mval);
 	flip = RNA_boolean_get(itemptr, "pen_flip");
diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c
index 7712a0793c2..27a0bc8f502 100644
--- a/source/blender/editors/sculpt_paint/sculpt.c
+++ b/source/blender/editors/sculpt_paint/sculpt.c
@@ -543,13 +543,14 @@ static float calc_symmetry_feather(Sculpt *sd, StrokeCache* cache)
    special multiplier found experimentally to scale the strength factor. */
 static float brush_strength(Sculpt *sd, StrokeCache *cache, float feather)
 {
+	const Scene *scene = cache->vc->scene;
 	Brush *brush = paint_brush(&sd->paint);
 
 	/* Primary strength input; square it to make lower values more sensitive */
-	const float root_alpha = brush_alpha(brush);
+	const float root_alpha = brush_alpha(scene, brush);
 	float alpha        = root_alpha*root_alpha;
 	float dir          = brush->flag & BRUSH_DIR_IN ? -1 : 1;
-	float pressure     = brush_use_alpha_pressure(cache->vc->scene, brush) ? cache->pressure : 1;
+	float pressure     = brush_use_alpha_pressure(scene, brush) ? cache->pressure : 1;
 	float pen_flip     = cache->pen_flip ? -1 : 1;
 	float invert       = cache->invert ? -1 : 1;
 	float accum        = integrate_overlap(brush);
@@ -679,7 +680,7 @@ static float tex_strength(SculptSession *ss, Brush *br, float point[3],
 		else /* else (mtex->brush_map_mode == MTEX_MAP_MODE_TILED),
 		        leave the coordinates relative to the screen */
 		{
-			radius = brush_size(br); // use unadjusted size for tiled mode
+			radius = brush_size(ss->cache->vc->scene, br); // use unadjusted size for tiled mode
 		
 			x = point_2d[0];
 			y = point_2d[1];
@@ -1167,6 +1168,7 @@ static void do_draw_brush(Sculpt *sd, Object *ob, PBVHNode **nodes, int totnode)
 static void do_crease_brush(Sculpt *sd, Object *ob, PBVHNode **nodes, int totnode)
 {
 	SculptSession *ss = ob->sculpt;
+	const Scene *scene = ss->cache->vc->scene;
 	Brush *brush = paint_brush(&sd->paint);
 	float offset[3], area_normal[3];
 	float bstrength= ss->cache->bstrength;
@@ -1182,8 +1184,8 @@ static void do_crease_brush(Sculpt *sd, Object *ob, PBVHNode **nodes, int totnod
 	
 	/* we divide out the squared alpha and multiply by the squared crease to give us the pinch strength */
 	
-	if(brush_alpha(brush) > 0.0f)
-		crease_correction = brush->crease_pinch_factor*brush->crease_pinch_factor/(brush_alpha(brush)*brush_alpha(brush));
+	if(brush_alpha(scene, brush) > 0.0f)
+		crease_correction = brush->crease_pinch_factor*brush->crease_pinch_factor/(brush_alpha(scene, brush)*brush_alpha(scene, brush));
 	else
 		crease_correction = brush->crease_pinch_factor*brush->crease_pinch_factor;
 
@@ -2658,10 +2660,10 @@ static void do_symmetrical_brush_actions(Sculpt *sd, Object *ob)
 	cache->first_time= 0;
 }
 
-static void sculpt_update_tex(Sculpt *sd, SculptSession *ss)
+static void sculpt_update_tex(const Scene *scene, Sculpt *sd, SculptSession *ss)
 {
 	Brush *brush = paint_brush(&sd->paint);
-	const int radius= brush_size(brush);
+	const int radius= brush_size(scene, brush);
 
 	if(ss->texcache) {
 		MEM_freeN(ss->texcache);
@@ -3017,7 +3019,7 @@ static void sculpt_update_cache_variants(bContext *C, Sculpt *sd, Object *ob,
 										 struct PaintStroke *stroke,
 										 PointerRNA *ptr)
 {
-	const Scene *scene = CTX_data_scene(C);
+	Scene *scene = CTX_data_scene(C);
 	SculptSession *ss = ob->sculpt;
 	StrokeCache *cache = ss->cache;
 	Brush *brush = paint_brush(&sd->paint);
@@ -3052,15 +3054,15 @@ static void sculpt_update_cache_variants(bContext *C, Sculpt *sd, Object *ob,
 	sd->pressure_value= cache->pressure;
 
 	cache->previous_pixel_radius = cache->pixel_radius;
-	cache->pixel_radius = brush_size(brush);
+	cache->pixel_radius = brush_size(scene, brush);
 
 	if(cache->first_time) {
 		if (!brush_use_locked_size(scene, brush)) {
-			cache->initial_radius= paint_calc_object_space_radius(cache->vc, cache->true_location, brush_size(brush));
-			brush_set_unprojected_radius(brush, cache->initial_radius);
+			cache->initial_radius= paint_calc_object_space_radius(cache->vc, cache->true_location, brush_size(scene, brush));
+			brush_set_unprojected_radius(scene, brush, cache->initial_radius);
 		}
 		else {
-			cache->initial_radius= brush_unprojected_radius(brush);
+			cache->initial_radius= brush_unprojected_radius(scene, brush);
 		}
 	}
 
@@ -3246,7 +3248,7 @@ int sculpt_stroke_get_location(bContext *C, struct PaintStroke *stroke, float ou
 	return srd.hit;
 }
 
-static void sculpt_brush_init_tex(Sculpt *sd, SculptSession *ss)
+static void sculpt_brush_init_tex(const Scene *scene, Sculpt *sd, SculptSession *ss)
 {
 	Brush *brush = paint_brush(&sd->paint);
 	MTex *mtex= &brush->mtex;
@@ -3258,7 +3260,7 @@ static void sculpt_brush_init_tex(Sculpt *sd, SculptSession *ss)
 	/* TODO: Shouldn't really have to do this at the start of every
 	   stroke, but sculpt would need some sort of notification when
 	   changes are made to the texture. */
-	sculpt_update_tex(sd, ss);
+	sculpt_update_tex(scene, sd, ss);
 }
 
 static int sculpt_brush_stroke_init(bContext *C, wmOperator *op)
@@ -3272,7 +3274,7 @@ static int sculpt_brush_stroke_init(bContext *C, wmOperator *op)
 	int is_smooth= 0;
 
 	view3d_operator_needs_opengl(C);
-	sculpt_brush_init_tex(sd, ss);
+	sculpt_brush_init_tex(scene, sd, ss);
 
 	is_smooth|= mode == BRUSH_STROKE_SMOOTH;
 	is_smooth|= brush->sculpt_tool == SCULPT_TOOL_SMOOTH;
diff --git a/source/blender/makesrna/intern/rna_brush.c b/source/blender/makesrna/intern/rna_brush.c
index 63009e09161..353782c85de 100644
--- a/source/blender/makesrna/intern/rna_brush.c
+++ b/source/blender/makesrna/intern/rna_brush.c
@@ -164,60 +164,21 @@ static void rna_Brush_icon_update(Main *UNUSED(bmain), Scene *UNUSED(scene), Poi
 
 static void rna_Brush_set_size(PointerRNA *ptr, int value)
 {
-	Brush* me = (Brush*)(ptr->data);
+	Brush* brush = ptr->data;
 
-	float size= (float)brush_size(me);
-	float unprojected_radius;
-
-	// paranoia: previous checks should make sure we don't divide by zero
-	assert(size != 0);
-
-	// set unprojected radius, so it remains consistent with size
-	unprojected_radius= (float)(brush_unprojected_radius(me) * value / size);
-	brush_set_unprojected_radius(me, unprojected_radius);
-
-	brush_set_size(me, value);
-}
-
-static int rna_Brush_get_size(PointerRNA *ptr)
-{
-	Brush* me = (Brush*)(ptr->data);
-	return brush_size(me);
+	/* scale unprojected radius so it stays consistent with brush size */
+	brush_scale_unprojected_radius(&brush->unprojected_radius,
+								   value, brush->size);
+	brush->size= value;
 }
 
 static void rna_Brush_set_unprojected_radius(PointerRNA *ptr, float value)
 {
-	Brush* me = (Brush*)(ptr->data);
-
-	float unprojected_radius= brush_unprojected_radius(me);
-	int size;
-
-	// paranoia: previous checks should make sure we don't divide by zero
-	assert(unprojected_radius != 0.0f);
-
-	// set size, so that it is consistent with unprojected_radius
-	size= (int)((float)brush_size(me) * value / unprojected_radius);
-	brush_set_size(me, size);
-
-	brush_set_unprojected_radius(me, value);
-}
-
-static float rna_Brush_get_unprojected_radius(PointerRNA *ptr)
-{
-	Brush* me = (Brush*)(ptr->data);
-	return brush_unprojected_radius(me);
-}
+	Brush* brush = ptr->data;
 
-static void rna_Brush_set_alpha(PointerRNA *ptr, float value)
-{
-	Brush* me = (Brush*)(ptr->data);
-	brush_set_alpha(me, value);
-}
-
-static float rna_Brush_get_alpha(PointerRNA *ptr)
-{
-	Brush* me = (Brush*)(ptr->data);
-	return brush_alpha(me);
+	/* scale brush size so it stays consistent with unprojected_radius */
+	brush_scale_size(&brush->size, value, brush->unprojected_radius);
+	brush->unprojected_radius= value;
 }
 
 static EnumPropertyItem *rna_Brush_direction_itemf(bContext *UNUSED(C), PointerRNA *ptr, PropertyRNA *UNUSED(prop), int *UNUSED(free))
@@ -412,14 +373,14 @@ static void rna_def_brush(BlenderRNA *brna)
 	
 	/* number values */
 	prop= RNA_def_property(srna, "size", PROP_INT, PROP_DISTANCE);
-	RNA_def_property_int_funcs(prop, "rna_Brush_get_size", "rna_Brush_set_size", NULL);
+	RNA_def_property_int_funcs(prop, NULL, "rna_Brush_set_size", NULL);
 	RNA_def_property_range(prop, 1, MAX_BRUSH_PIXEL_RADIUS*10);
 	RNA_def_property_ui_range(prop, 1, MAX_BRUSH_PIXEL_RADIUS, 1, 0);
 	RNA_def_property_ui_text(prop, "Radius", "Radius of the brush in pixels");
 	RNA_def_property_update(prop, 0, "rna_Brush_update");
 	
 	prop= RNA_def_property(srna, "unprojected_radius", PROP_FLOAT, PROP_DISTANCE);
-	RNA_def_property_float_funcs(prop, "rna_Brush_get_unprojected_radius", "rna_Brush_set_unprojected_radius", NULL);
+	RNA_def_property_float_funcs(prop, NULL, "rna_Brush_set_unprojected_radius", NULL);
 	RNA_def_property_range(prop, 0.001, FLT_MAX);
 	RNA_def_property_ui_range(prop, 0.001, 1, 0, 0);
 	RNA_def_property_ui_text(prop, "Unprojected Radius", "Radius of brush in Blender units");
@@ -463,7 +424,6 @@ static void rna_def_brush(BlenderRNA *brna)
 	
 	prop= RNA_def_property(srna, "strength", PROP_FLOAT, PROP_FACTOR);
 	RNA_def_property_float_sdna(prop, NULL, "alpha");
-	RNA_def_property_float_funcs(prop, "rna_Brush_get_alpha", "rna_Brush_set_alpha", NULL);
 	RNA_def_property_float_default(prop, 0.5f);
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.001, 0.001);
diff --git a/source/blender/makesrna/intern/rna_scene.c b/source/blender/makesrna/intern/rna_scene.c
index 2705d4f1d5e..520292c7526 100644
--- a/source/blender/makesrna/intern/rna_scene.c
+++ b/source/blender/makesrna/intern/rna_scene.c
@@ -244,6 +244,7 @@ EnumPropertyItem image_color_depth_items[] = {
 #include "BLI_threads.h"
 #include "BLI_editVert.h"
 
+#include "BKE_brush.h"
 #include "BKE_context.h"
 #include "BKE_global.h"
 #include "BKE_image.h"
@@ -1288,6 +1289,25 @@ static KeyingSet *rna_Scene_keying_set_new(Scene *sce, ReportList *reports, cons
 	}
 }
 
+static void rna_UnifiedPaintSettings_size_set(PointerRNA *ptr, int value)
+{
+	UnifiedPaintSettings* ups = ptr->data;
+
+	/* scale unprojected radius so it stays consistent with brush size */
+	brush_scale_unprojected_radius(&ups->unprojected_radius,
+								   value, ups->size);
+	ups->size= value;
+}
+
+static void rna_UnifiedPaintSettings_unprojected_radius_set(PointerRNA *ptr, float value)
+{
+	UnifiedPaintSettings* ups = ptr->data;
+
+	/* scale brush size so it stays consistent with unprojected_radius */
+	brush_scale_size(&ups->size, value, ups->unprojected_radius);
+	ups->unprojected_radius= value;
+}
+
 /* note: without this, when Multi-Paint is activated/deactivated, the colors
  * will not change right away when multiple bones are selected, this function
  * is not for general use and only for the few cases where changing scene
@@ -1654,11 +1674,13 @@ static void rna_def_unified_paint_settings(BlenderRNA  *brna)
 	/* unified paint settings that override the equivalent settings
 	   from the active brush */
 	prop= RNA_def_property(srna, "size", PROP_INT, PROP_DISTANCE);
+	RNA_def_property_int_funcs(prop, NULL, "rna_UnifiedPaintSettings_size_set", NULL);
 	RNA_def_property_range(prop, 1, MAX_BRUSH_PIXEL_RADIUS*10);
 	RNA_def_property_ui_range(prop, 1, MAX_BRUSH_PIXEL_RADIUS, 1, 0);
 	RNA_def_property_ui_text(prop, "Radius", "Radius of the brush in pixels");
 
 	prop= RNA_def_property(srna, "unprojected_radius", PROP_FLOAT, PROP_DISTANCE);
+	RNA_def_property_float_funcs(prop, NULL, "rna_UnifiedPaintSettings_unprojected_radius_set", NULL);
 	RNA_def_property_range(prop, 0.001, FLT_MAX);
 	RNA_def_property_ui_range(prop, 0.001, 1, 0, 0);
 	RNA_def_property_ui_text(prop, "Unprojected Radius", "Radius of brush in Blender units");
diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 123d5807325..edd822bd2da 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -3083,23 +3083,35 @@ static void radial_control_paint_cursor(bContext *C, int x, int y, void *customd
 	glDisable(GL_LINE_SMOOTH);
 }
 
+typedef enum {
+	RC_PROP_ALLOW_MISSING = 1,
+	RC_PROP_REQUIRE_FLOAT = 2,
+	RC_PROP_REQUIRE_BOOL = 4,
+} RCPropFlags;
+
 /* attempt to retrieve the rna pointer/property from an rna path;
    returns 0 for failure, 1 for success, and also 1 if property is not
    set */
 static int radial_control_get_path(PointerRNA *ctx_ptr, wmOperator *op,
 				   const char *name, PointerRNA *r_ptr,
-				   PropertyRNA **r_prop, int req_float,
-				   int req_length, int allow_missing)
+				   PropertyRNA **r_prop, int req_length, RCPropFlags flags)
 {
 	PropertyRNA *unused_prop;
 	int len;
 	char *str;
 
+	/* check flags */
+	if((flags & RC_PROP_REQUIRE_BOOL) && (flags & RC_PROP_REQUIRE_FLOAT)) {
+		BKE_reportf(op->reports, RPT_ERROR, "Property can't be both boolean and float");
+		return 0;
+	}
+
 	/* get an rna string path from the operator's properties */
 	if(!(str = RNA_string_get_alloc(op->ptr, name, NULL, 0)))
 		return 1;
 
 	if(str[0] == '\0') {
+		if(r_prop) *r_prop = NULL;
 		MEM_freeN(str);
 		return 1;
 	}
@@ -3110,7 +3122,7 @@ static int radial_control_get_path(PointerRNA *ctx_ptr, wmOperator *op,
 	/* get rna from path */
 	if(!RNA_path_resolve(ctx_ptr, str, r_ptr, r_prop)) {
 		MEM_freeN(str);
-		if(allow_missing)
+		if(flags & RC_PROP_ALLOW_MISSING)
 			return 1;
 		else {
 			BKE_reportf(op->reports, RPT_ERROR, "Couldn't resolve path %s", name);
@@ -3118,9 +3130,12 @@ static int radial_control_get_path(PointerRNA *ctx_ptr, wmOperator *op,
 		}
 	}
 
-	/* if property is expected to be a float, check its type */
-	if(req_float) {
-		if(!(*r_prop) || (RNA_property_type(*r_prop) != PROP_FLOAT)) {
+	/* check property type */
+	if(flags & (RC_PROP_REQUIRE_BOOL | RC_PROP_REQUIRE_FLOAT)) {
+		PropertyType prop_type = RNA_property_type(*r_prop);
+
+		if(((flags & RC_PROP_REQUIRE_BOOL) && (prop_type != PROP_BOOLEAN)) ||
+		   ((flags & RC_PROP_REQUIRE_FLOAT) && prop_type != PROP_FLOAT)) {
 			MEM_freeN(str);
 			BKE_reportf(op->reports, RPT_ERROR,
 				    "Property from path %s is not a float", name);
@@ -3146,31 +3161,50 @@ static int radial_control_get_path(PointerRNA *ctx_ptr, wmOperator *op,
 static int radial_control_get_properties(bContext *C, wmOperator *op)
 {
 	RadialControl *rc = op->customdata;
-	PointerRNA ctx_ptr;
+	PointerRNA ctx_ptr, use_secondary_ptr;
+	PropertyRNA *use_secondary_prop;
+	const char *data_path;
 
 	RNA_pointer_create(NULL, &RNA_Context, C, &ctx_ptr);
 
-	if(!radial_control_get_path(&ctx_ptr, op, "data_path", &rc->ptr, &rc->prop, 0, 0, 0))
+	/* check if we use primary or secondary path */
+	if(!radial_control_get_path(&ctx_ptr, op, "use_secondary",
+								&use_secondary_ptr, &use_secondary_prop,
+								0, (RC_PROP_ALLOW_MISSING|
+									RC_PROP_REQUIRE_BOOL))) {
+		return 0;
+	}
+	else {
+		if(use_secondary_prop &&
+		   RNA_property_boolean_get(&use_secondary_ptr, use_secondary_prop))
+			data_path = "data_path_secondary";
+		else
+			data_path = "data_path_primary";
+	}
+
+	if(!radial_control_get_path(&ctx_ptr, op, data_path, &rc->ptr, &rc->prop, 0, 0))
 		return 0;
 
 	/* data path is required */
 	if(!rc->prop)
 		return 0;
 	
-	if(!radial_control_get_path(&ctx_ptr, op, "rotation_path", &rc->rot_ptr, &rc->rot_prop, 1, 0, 0))
+	if(!radial_control_get_path(&ctx_ptr, op, "rotation_path", &rc->rot_ptr, &rc->rot_prop, 0, RC_PROP_REQUIRE_FLOAT))
 		return 0;
-	if(!radial_control_get_path(&ctx_ptr, op, "color_path", &rc->col_ptr, &rc->col_prop, 1, 3, 0))
+	if(!radial_control_get_path(&ctx_ptr, op, "color_path", &rc->col_ptr, &rc->col_prop, 3, RC_PROP_REQUIRE_FLOAT))
 		return 0;
-	if(!radial_control_get_path(&ctx_ptr, op, "fill_color_path", &rc->fill_col_ptr, &rc->fill_col_prop, 1, 3, 0))
+	if(!radial_control_get_path(&ctx_ptr, op, "fill_color_path", &rc->fill_col_ptr, &rc->fill_col_prop, 3, RC_PROP_REQUIRE_FLOAT))
 		return 0;
 	
 	/* slightly ugly; allow this property to not resolve
 	   correctly. needed because 3d texture paint shares the same
 	   keymap as 2d image paint */
-	if(!radial_control_get_path(&ctx_ptr, op, "zoom_path", &rc->zoom_ptr, &rc->zoom_prop, 1, 2, 1))
+	if(!radial_control_get_path(&ctx_ptr, op, "zoom_path",
+								&rc->zoom_ptr, &rc->zoom_prop, 2,
+								RC_PROP_REQUIRE_FLOAT|RC_PROP_ALLOW_MISSING))
 		return 0;
 	
-	if(!radial_control_get_path(&ctx_ptr, op, "image_id", &rc->image_id_ptr, NULL, 0, 0, 0))
+	if(!radial_control_get_path(&ctx_ptr, op, "image_id", &rc->image_id_ptr, NULL, 0, 0))
 		return 0;
 	else if(rc->image_id_ptr.data) {
 		/* extra check, pointer must be to an ID */
@@ -3363,7 +3397,9 @@ static void WM_OT_radial_control(wmOperatorType *ot)
 	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
 
 	/* all paths relative to the context */
-	RNA_def_string(ot->srna, "data_path", "", 0, "Data Path", "Path of property to be set by the radial control");
+	RNA_def_string(ot->srna, "data_path_primary", "", 0, "Primary Data Path", "Primary path of property to be set by the radial control");
+	RNA_def_string(ot->srna, "data_path_secondary", "", 0, "Secondary Data Path", "Secondary path of property to be set by the radial control");
+	RNA_def_string(ot->srna, "use_secondary", "", 0, "Use Secondary", "Path of property to select between the primary and secondary data paths");
 	RNA_def_string(ot->srna, "rotation_path", "", 0, "Rotation Path", "Path of property used to rotate the texture display");
 	RNA_def_string(ot->srna, "color_path", "", 0, "Color Path", "Path of property used to set the color of the control");
 	RNA_def_string(ot->srna, "fill_color_path", "", 0, "Fill Color Path", "Path of property used to set the fill color of the control");