-New mask mode for lights, makes using masks MUCH easier.

3 files changed, 50 insertions, 5 deletions

diff --git a/servers/visual/rasterizer.h b/servers/visual/rasterizer.h
index 50407f1b0f..d94067961f 100644
--- a/servers/visual/rasterizer.h
+++ b/servers/visual/rasterizer.h
@@ -610,6 +610,7 @@ public:
 		CanvasLight *shadows_next_ptr;
 		CanvasLight *filter_next_ptr;
 		CanvasLight *next_ptr;
+		CanvasLight *mask_next_ptr;
 
 		CanvasLight() {
 			enabled=true;			
@@ -627,6 +628,7 @@ public:
 			mode=VS::CANVAS_LIGHT_MODE_ADD;
 			texture_cache=NULL;
 			next_ptr=NULL;
+			mask_next_ptr=NULL;
 			filter_next_ptr=NULL;
 			shadow_buffer_size=2048;
 			shadow_esm_mult=80;
@@ -792,6 +794,7 @@ public:
 		CanvasItem* material_owner;
 		ViewportRender *vp_render;
 		bool distance_field;
+		bool light_masked;
 
 		Rect2 global_rect_cache;
 
@@ -918,8 +921,8 @@ public:
 			return rect;
 		}
 
-		void clear() { for (int i=0;i<commands.size();i++) memdelete( commands[i] ); commands.clear(); clip=false; rect_dirty=true; final_clip_owner=NULL;  material_owner=NULL;}
-		CanvasItem() { light_mask=1; vp_render=NULL; next=NULL; final_clip_owner=NULL; clip=false; final_opacity=1;  blend_mode=VS::MATERIAL_BLEND_MODE_MIX; visible=true; rect_dirty=true; custom_rect=false; ontop=true; material_owner=NULL; material=NULL; copy_back_buffer=NULL; distance_field=false; }
+		void clear() { for (int i=0;i<commands.size();i++) memdelete( commands[i] ); commands.clear(); clip=false; rect_dirty=true; final_clip_owner=NULL;  material_owner=NULL; light_masked=false; }
+		CanvasItem() { light_mask=1; vp_render=NULL; next=NULL; final_clip_owner=NULL; clip=false; final_opacity=1;  blend_mode=VS::MATERIAL_BLEND_MODE_MIX; visible=true; rect_dirty=true; custom_rect=false; ontop=true; material_owner=NULL; material=NULL; copy_back_buffer=NULL; distance_field=false; light_masked=false; }
 		virtual ~CanvasItem() { clear(); if (copy_back_buffer) memdelete(copy_back_buffer); }
 	};
 
diff --git a/servers/visual/visual_server_raster.cpp b/servers/visual/visual_server_raster.cpp
index a94d4f64c7..79911121f5 100644
--- a/servers/visual/visual_server_raster.cpp
+++ b/servers/visual/visual_server_raster.cpp
@@ -6777,6 +6777,7 @@ void VisualServerRaster::_render_canvas_item_viewport(VisualServer* p_self,void
 
 }
 
+
 void VisualServerRaster::_render_canvas_item(CanvasItem *p_canvas_item,const Matrix32& p_transform,const Rect2& p_clip_rect, float p_opacity,int p_z,Rasterizer::CanvasItem **z_list,Rasterizer::CanvasItem **z_last_list,CanvasItem *p_canvas_clip,CanvasItem *p_material_owner) {
 
 	CanvasItem *ci = p_canvas_item;
@@ -6878,6 +6879,7 @@ void VisualServerRaster::_render_canvas_item(CanvasItem *p_canvas_item,const Mat
 		ci->final_opacity=opacity * ci->self_opacity;
 		ci->global_rect_cache=global_rect;
 		ci->global_rect_cache.pos-=p_clip_rect.pos;
+		ci->light_masked=false;
 
 		int zidx = p_z-CANVAS_ITEM_Z_MIN;
 
@@ -6905,7 +6907,34 @@ void VisualServerRaster::_render_canvas_item(CanvasItem *p_canvas_item,const Mat
 
 }
 
-void VisualServerRaster::_render_canvas(Canvas *p_canvas,const Matrix32 &p_transform,Rasterizer::CanvasLight *p_lights) {
+void VisualServerRaster::_light_mask_canvas_items(int p_z,Rasterizer::CanvasItem *p_canvas_item,Rasterizer::CanvasLight *p_masked_lights) {
+
+	if (!p_masked_lights)
+		return;
+
+	Rasterizer::CanvasItem *ci=p_canvas_item;
+
+	while(ci) {
+
+		Rasterizer::CanvasLight *light=p_masked_lights;
+		while(light) {
+
+			if (ci->light_mask&light->item_mask && p_z>=light->z_min && p_z<=light->z_max && ci->global_rect_cache.intersects_transformed(light->xform_cache,light->rect_cache)) {
+				ci->light_masked=true;
+			}
+
+			light=light->mask_next_ptr;
+		}
+
+		ci=ci->next;
+	}
+
+
+
+
+}
+
+void VisualServerRaster::_render_canvas(Canvas *p_canvas,const Matrix32 &p_transform,Rasterizer::CanvasLight *p_lights,Rasterizer::CanvasLight *p_masked_lights) {
 
 	rasterizer->canvas_begin();
 
@@ -6938,6 +6967,11 @@ void VisualServerRaster::_render_canvas(Canvas *p_canvas,const Matrix32 &p_trans
 		for(int i=0;i<z_range;i++) {
 			if (!z_list[i])
 				continue;
+
+			if (p_masked_lights) {
+				_light_mask_canvas_items(CANVAS_ITEM_Z_MIN+i,z_list[i],p_masked_lights);
+			}
+
 			rasterizer->canvas_render_items(z_list[i],CANVAS_ITEM_Z_MIN+i,p_canvas->modulate,p_lights);
 		}
 	} else {
@@ -7072,6 +7106,7 @@ void VisualServerRaster::_draw_viewport(Viewport *p_viewport,int p_ofs_x, int p_
 		Rect2 clip_rect(0,0,viewport_rect.width,viewport_rect.height);
 		Rasterizer::CanvasLight *lights=NULL;
 		Rasterizer::CanvasLight *lights_with_shadow=NULL;
+		Rasterizer::CanvasLight *lights_with_mask=NULL;
 		Rect2 shadow_rect;
 
 		int light_count=0;
@@ -7119,9 +7154,14 @@ void VisualServerRaster::_draw_viewport(Viewport *p_viewport,int p_ofs_x, int p_
 							cl->radius_cache=cl->rect_cache.size.length();
 
 						}
+						if (cl->mode==CANVAS_LIGHT_MODE_MASK) {
+							cl->mask_next_ptr=lights_with_mask;
+							lights_with_mask=cl;
+						}
 
 						light_count++;
 					}
+
 				}
 			}
 
@@ -7190,7 +7230,7 @@ void VisualServerRaster::_draw_viewport(Viewport *p_viewport,int p_ofs_x, int p_
 				ptr=ptr->filter_next_ptr;
 			}
 
-			_render_canvas( E->get()->canvas,xform,canvas_lights );
+			_render_canvas( E->get()->canvas,xform,canvas_lights,lights_with_mask );
 			i++;
 
 			if (scenario_draw_canvas_bg && E->key().layer>=scenario_canvas_max_layer) {
diff --git a/servers/visual/visual_server_raster.h b/servers/visual/visual_server_raster.h
index b6a5ca6308..e0127faf41 100644
--- a/servers/visual/visual_server_raster.h
+++ b/servers/visual/visual_server_raster.h
@@ -633,7 +633,9 @@ class VisualServerRaster : public VisualServer {
 	static void _render_canvas_item_viewport(VisualServer* p_self,void *p_vp,const Rect2& p_rect);
 	void _render_canvas_item_tree(CanvasItem *p_canvas_item, const Matrix32& p_transform, const Rect2& p_clip_rect, const Color &p_modulate, Rasterizer::CanvasLight *p_lights);
 	void _render_canvas_item(CanvasItem *p_canvas_item, const Matrix32& p_transform, const Rect2& p_clip_rect, float p_opacity, int p_z, Rasterizer::CanvasItem **z_list, Rasterizer::CanvasItem **z_last_list, CanvasItem *p_canvas_clip, CanvasItem *p_material_owner);
-	void _render_canvas(Canvas *p_canvas, const Matrix32 &p_transform, Rasterizer::CanvasLight *p_lights);
+	void _render_canvas(Canvas *p_canvas, const Matrix32 &p_transform, Rasterizer::CanvasLight *p_lights, Rasterizer::CanvasLight *p_masked_lights);
+	void _light_mask_canvas_items(int p_z,Rasterizer::CanvasItem *p_canvas_item,Rasterizer::CanvasLight *p_masked_lights);
+
 	Vector<Vector3> _camera_generate_endpoints(Instance *p_light,Camera *p_camera,float p_range_min, float p_range_max);
 	Vector<Plane> _camera_generate_orthogonal_planes(Instance *p_light,Camera *p_camera,float p_range_min, float p_range_max);