Support table erasor in projective painting as well.

5 files changed, 19 insertions, 8 deletions

diff --git a/source/blender/editors/sculpt_paint/paint_image.c b/source/blender/editors/sculpt_paint/paint_image.c
index f1a2a8156d8..a556f22b8ec 100644
--- a/source/blender/editors/sculpt_paint/paint_image.c
+++ b/source/blender/editors/sculpt_paint/paint_image.c
@@ -819,7 +819,7 @@ static void paint_stroke_update_step(bContext *C, struct PaintStroke *stroke, Po
 	}
 
 	if (pop->mode == PAINT_MODE_3D_PROJECT) {
-		paint_proj_stroke(C, pop->custom_paint, pop->prevmouse, mouse, pressure, distance, size);
+		paint_proj_stroke(C, pop->custom_paint, pop->prevmouse, mouse, eraser, pressure, distance, size);
 	}
 	else {
 		paint_2d_stroke(pop->custom_paint, pop->prevmouse, mouse, eraser, pressure, distance, size);
@@ -858,7 +858,8 @@ static void paint_stroke_done(const bContext *C, struct PaintStroke *stroke)
 				paint_2d_gradient_fill(C, brush, pop->startmouse, pop->prevmouse, pop->custom_paint);
 			}
 			else {
-				paint_proj_stroke(C, pop->custom_paint, pop->startmouse, pop->prevmouse, 1.0, 0.0, BKE_brush_size_get(scene, brush));
+				paint_proj_stroke(C, pop->custom_paint, pop->startmouse, pop->prevmouse, paint_stroke_flipped(stroke),
+				                  1.0, 0.0, BKE_brush_size_get(scene, brush));
 				/* two redraws, one for GPU update, one for notification */
 				paint_proj_redraw(C, pop->custom_paint, false);
 				paint_proj_redraw(C, pop->custom_paint, true);
@@ -872,7 +873,8 @@ static void paint_stroke_done(const bContext *C, struct PaintStroke *stroke)
 				paint_2d_bucket_fill(C, color, brush, pop->prevmouse, pop->custom_paint);
 			}
 			else {
-				paint_proj_stroke(C, pop->custom_paint, pop->startmouse, pop->prevmouse, 1.0, 0.0, BKE_brush_size_get(scene, brush));
+				paint_proj_stroke(C, pop->custom_paint, pop->startmouse, pop->prevmouse, paint_stroke_flipped(stroke),
+				                  1.0, 0.0, BKE_brush_size_get(scene, brush));
 				/* two redraws, one for GPU update, one for notification */
 				paint_proj_redraw(C, pop->custom_paint, false);
 				paint_proj_redraw(C, pop->custom_paint, true);
diff --git a/source/blender/editors/sculpt_paint/paint_image_2d.c b/source/blender/editors/sculpt_paint/paint_image_2d.c
index 1f66910eaa2..1cba8a2cf23 100644
--- a/source/blender/editors/sculpt_paint/paint_image_2d.c
+++ b/source/blender/editors/sculpt_paint/paint_image_2d.c
@@ -1166,7 +1166,7 @@ static void paint_2d_canvas_free(ImagePaintState *s)
 	image_undo_remove_masks();
 }
 
-void paint_2d_stroke(void *ps, const float prev_mval[2], const float mval[2], int eraser, float pressure, float distance, float size)
+void paint_2d_stroke(void *ps, const float prev_mval[2], const float mval[2], const bool eraser, float pressure, float distance, float size)
 {
 	float newuv[2], olduv[2];
 	ImagePaintState *s = ps;
diff --git a/source/blender/editors/sculpt_paint/paint_image_proj.c b/source/blender/editors/sculpt_paint/paint_image_proj.c
index 516666e8c2c..e86de261643 100644
--- a/source/blender/editors/sculpt_paint/paint_image_proj.c
+++ b/source/blender/editors/sculpt_paint/paint_image_proj.c
@@ -4377,7 +4377,7 @@ static bool project_paint_op(void *state, const float lastpos[2], const float po
 }
 
 
-void paint_proj_stroke(const bContext *C, void *pps, const float prev_pos[2], const float pos[2], float pressure, float distance, float size)
+void paint_proj_stroke(const bContext *C, void *pps, const float prev_pos[2], const float pos[2], const bool eraser, float pressure, float distance, float size)
 {
 	ProjPaintState *ps = pps;
 	Brush *brush = ps->brush;
@@ -4385,7 +4385,10 @@ void paint_proj_stroke(const bContext *C, void *pps, const float prev_pos[2], co
 	int a;
 
 	ps->brush_size = size;
-
+	ps->blend = brush->blend;
+	if (eraser)
+		ps->blend = IMB_BLEND_ERASE_ALPHA;
+	
 	/* clone gets special treatment here to avoid going through image initialization */
 	if (ps->tool == PAINT_TOOL_CLONE && ps->mode == BRUSH_STROKE_INVERT) {
 		View3D *v3d = ps->v3d;
diff --git a/source/blender/editors/sculpt_paint/paint_intern.h b/source/blender/editors/sculpt_paint/paint_intern.h
index fb4bedb6906..736e6d229b3 100644
--- a/source/blender/editors/sculpt_paint/paint_intern.h
+++ b/source/blender/editors/sculpt_paint/paint_intern.h
@@ -84,6 +84,7 @@ struct wmKeyMap *paint_stroke_modal_keymap(struct wmKeyConfig *keyconf);
 int paint_stroke_modal(struct bContext *C, struct wmOperator *op, const struct wmEvent *event);
 int paint_stroke_exec(struct bContext *C, struct wmOperator *op);
 void paint_stroke_cancel(struct bContext *C, struct wmOperator *op);
+bool paint_stroke_flipped(struct PaintStroke *stroke);
 struct ViewContext *paint_stroke_view_context(struct PaintStroke *stroke);
 void *paint_stroke_mode_data(struct PaintStroke *stroke);
 float paint_stroke_distance_get(struct PaintStroke *stroke);
@@ -161,11 +162,11 @@ int get_imapaint_zoom(struct bContext *C, float *zoomx, float *zoomy);
 void *paint_2d_new_stroke(struct bContext *, struct wmOperator *, int mode);
 void paint_2d_redraw(const bContext *C, void *ps, bool final);
 void paint_2d_stroke_done(void *ps);
-void paint_2d_stroke(void *ps, const float prev_mval[2], const float mval[2], int eraser, float pressure, float distance, float size);
+void paint_2d_stroke(void *ps, const float prev_mval[2], const float mval[2], const bool eraser, float pressure, float distance, float size);
 void paint_2d_bucket_fill(const struct bContext *C, const float color[3], struct Brush *br, const float mouse_init[2], void *ps);
 void paint_2d_gradient_fill (const struct bContext *C, struct Brush *br, const float mouse_init[2], const float mouse_final[2], void *ps);
 void *paint_proj_new_stroke(struct bContext *C, struct Object *ob, const float mouse[2], int mode);
-void paint_proj_stroke(const struct bContext *C, void *ps, const float prevmval_i[2], const float mval_i[2], float pressure, float distance, float size);
+void paint_proj_stroke(const struct bContext *C, void *ps, const float prevmval_i[2], const float mval_i[2], const bool eraser, float pressure, float distance, float size);
 void paint_proj_redraw(const struct bContext *C, void *pps, bool final);
 void paint_proj_stroke_done(void *ps);
 void paint_proj_mesh_data_ensure(bContext *C, struct Object *ob, struct wmOperator *op);
diff --git a/source/blender/editors/sculpt_paint/paint_stroke.c b/source/blender/editors/sculpt_paint/paint_stroke.c
index 19292867667..1e806e8341a 100644
--- a/source/blender/editors/sculpt_paint/paint_stroke.c
+++ b/source/blender/editors/sculpt_paint/paint_stroke.c
@@ -1123,6 +1123,11 @@ void *paint_stroke_mode_data(struct PaintStroke *stroke)
 	return stroke->mode_data;
 }
 
+bool paint_stroke_flipped(struct PaintStroke *stroke)
+{
+	return stroke->pen_flip;
+}
+
 float paint_stroke_distance_get(struct PaintStroke *stroke)
 {
 	return stroke->stroke_distance;