Implement signed distance fields for 2D shaders

editor/editor_node.cpp

@@ -511,6 +511,11 @@ void EditorNode::_notification(int p_what) {
 				scene_root->set_snap_2d_transforms_to_pixel(snap_2d_transforms);
 				bool snap_2d_vertices = GLOBAL_GET("rendering/quality/2d/snap_2d_vertices_to_pixel");
 				scene_root->set_snap_2d_vertices_to_pixel(snap_2d_vertices);
+
+				Viewport::SDFOversize sdf_oversize = Viewport::SDFOversize(int(GLOBAL_GET("rendering/quality/2d_sdf/oversize")));
+				scene_root->set_sdf_oversize(sdf_oversize);
+				Viewport::SDFScale sdf_scale = Viewport::SDFScale(int(GLOBAL_GET("rendering/quality/2d_sdf/scale")));
+				scene_root->set_sdf_scale(sdf_scale);
 			}
 
 			ResourceImporterTexture::get_singleton()->update_imports();

scene/2d/light_occluder_2d.cpp

@@ -265,6 +265,14 @@ String LightOccluder2D::get_configuration_warning() const {
 	return warning;
 }
 
+void LightOccluder2D::set_as_sdf_collision(bool p_enable) {
+	sdf_collision = p_enable;
+	RS::get_singleton()->canvas_light_occluder_set_as_sdf_collision(occluder, sdf_collision);
+}
+bool LightOccluder2D::is_set_as_sdf_collision() const {
+	return sdf_collision;
+}
+
 void LightOccluder2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_occluder_polygon", "polygon"), &LightOccluder2D::set_occluder_polygon);
 	ClassDB::bind_method(D_METHOD("get_occluder_polygon"), &LightOccluder2D::get_occluder_polygon);
@@ -272,14 +280,20 @@ void LightOccluder2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_occluder_light_mask", "mask"), &LightOccluder2D::set_occluder_light_mask);
 	ClassDB::bind_method(D_METHOD("get_occluder_light_mask"), &LightOccluder2D::get_occluder_light_mask);
 
+	ClassDB::bind_method(D_METHOD("set_as_sdf_collision", "enable"), &LightOccluder2D::set_as_sdf_collision);
+	ClassDB::bind_method(D_METHOD("is_set_as_sdf_collision"), &LightOccluder2D::is_set_as_sdf_collision);
+
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "occluder", PROPERTY_HINT_RESOURCE_TYPE, "OccluderPolygon2D"), "set_occluder_polygon", "get_occluder_polygon");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "sdf_collision"), "set_as_sdf_collision", "is_set_as_sdf_collision");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "light_mask", PROPERTY_HINT_LAYERS_2D_RENDER), "set_occluder_light_mask", "get_occluder_light_mask");
 }
 
 LightOccluder2D::LightOccluder2D() {
 	occluder = RS::get_singleton()->canvas_light_occluder_create();
 	mask = 1;
+
 	set_notify_transform(true);
+	set_as_sdf_collision(true);
 }
 
 LightOccluder2D::~LightOccluder2D() {

scene/2d/light_occluder_2d.h

@@ -84,7 +84,7 @@ class LightOccluder2D : public Node2D {
 	bool enabled;
 	int mask;
 	Ref<OccluderPolygon2D> occluder_polygon;
-
+	bool sdf_collision;
 	void _poly_changed();
 
 protected:
@@ -103,6 +103,9 @@ public:
 	void set_occluder_light_mask(int p_mask);
 	int get_occluder_light_mask() const;
 
+	void set_as_sdf_collision(bool p_enable);
+	bool is_set_as_sdf_collision() const;
+
 	String get_configuration_warning() const override;
 
 	LightOccluder2D();

scene/main/scene_tree.cpp

@@ -1397,6 +1397,14 @@ SceneTree::SceneTree() {
 	bool snap_2d_vertices = GLOBAL_DEF("rendering/quality/2d/snap_2d_vertices_to_pixel", false);
 	root->set_snap_2d_vertices_to_pixel(snap_2d_vertices);
 
+	Viewport::SDFOversize sdf_oversize = Viewport::SDFOversize(int(GLOBAL_DEF("rendering/quality/2d_sdf/oversize", 1)));
+	root->set_sdf_oversize(sdf_oversize);
+	Viewport::SDFScale sdf_scale = Viewport::SDFScale(int(GLOBAL_DEF("rendering/quality/2d_sdf/scale", 1)));
+	root->set_sdf_scale(sdf_scale);
+
+	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/2d_sdf/oversize", PropertyInfo(Variant::INT, "rendering/quality/2d_sdf/oversize", PROPERTY_HINT_ENUM, "100%,120%,150%,200%"));
+	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/2d_sdf/scale", PropertyInfo(Variant::INT, "rendering/quality/2d_sdf/scale", PROPERTY_HINT_ENUM, "100%,50%,25%"));
+
 	{ //load default fallback environment
 		//get possible extensions
 		List<String> exts;

scene/main/viewport.cpp

@@ -3383,6 +3383,24 @@ void Viewport::pass_mouse_focus_to(Viewport *p_viewport, Control *p_control) {
 	}
 }
 
+void Viewport::set_sdf_oversize(SDFOversize p_sdf_oversize) {
+	ERR_FAIL_INDEX(p_sdf_oversize, SDF_OVERSIZE_MAX);
+	sdf_oversize = p_sdf_oversize;
+	RS::get_singleton()->viewport_set_sdf_oversize_and_scale(viewport, RS::ViewportSDFOversize(sdf_oversize), RS::ViewportSDFScale(sdf_scale));
+}
+Viewport::SDFOversize Viewport::get_sdf_oversize() const {
+	return sdf_oversize;
+}
+
+void Viewport::set_sdf_scale(SDFScale p_sdf_scale) {
+	ERR_FAIL_INDEX(p_sdf_scale, SDF_SCALE_MAX);
+	sdf_scale = p_sdf_scale;
+	RS::get_singleton()->viewport_set_sdf_oversize_and_scale(viewport, RS::ViewportSDFOversize(sdf_oversize), RS::ViewportSDFScale(sdf_scale));
+}
+Viewport::SDFScale Viewport::get_sdf_scale() const {
+	return sdf_scale;
+}
+
 void Viewport::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_world_2d", "world_2d"), &Viewport::set_world_2d);
 	ClassDB::bind_method(D_METHOD("get_world_2d"), &Viewport::get_world_2d);
@@ -3482,6 +3500,12 @@ void Viewport::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_default_canvas_item_texture_repeat", "mode"), &Viewport::set_default_canvas_item_texture_repeat);
 	ClassDB::bind_method(D_METHOD("get_default_canvas_item_texture_repeat"), &Viewport::get_default_canvas_item_texture_repeat);
 
+	ClassDB::bind_method(D_METHOD("set_sdf_oversize", "oversize"), &Viewport::set_sdf_oversize);
+	ClassDB::bind_method(D_METHOD("get_sdf_oversize"), &Viewport::get_sdf_oversize);
+
+	ClassDB::bind_method(D_METHOD("set_sdf_scale", "scale"), &Viewport::set_sdf_scale);
+	ClassDB::bind_method(D_METHOD("get_sdf_scale"), &Viewport::get_sdf_scale);
+
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "own_world_3d"), "set_use_own_world_3d", "is_using_own_world_3d");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "world_3d", PROPERTY_HINT_RESOURCE_TYPE, "World3D"), "set_world_3d", "get_world_3d");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "world_2d", PROPERTY_HINT_RESOURCE_TYPE, "World2D", 0), "set_world_2d", "get_world_2d");
@@ -3506,6 +3530,9 @@ void Viewport::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "gui_disable_input"), "set_disable_input", "is_input_disabled");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "gui_snap_controls_to_pixels"), "set_snap_controls_to_pixels", "is_snap_controls_to_pixels_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "gui_embed_subwindows"), "set_embed_subwindows_hint", "get_embed_subwindows_hint");
+	ADD_GROUP("SDF", "sdf_");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "sdf_oversize", PROPERTY_HINT_ENUM, "100%,120%,150%,200%"), "set_sdf_oversize", "get_sdf_oversize");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "sdf_scale", PROPERTY_HINT_ENUM, "100%,50%,25%"), "set_sdf_scale", "get_sdf_scale");
 	ADD_GROUP("Shadow Atlas", "shadow_atlas_");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "shadow_atlas_size"), "set_shadow_atlas_size", "get_shadow_atlas_size");
 	ADD_PROPERTYI(PropertyInfo(Variant::INT, "shadow_atlas_quad_0", PROPERTY_HINT_ENUM, "Disabled,1 Shadow,4 Shadows,16 Shadows,64 Shadows,256 Shadows,1024 Shadows"), "set_shadow_atlas_quadrant_subdiv", "get_shadow_atlas_quadrant_subdiv", 0);
@@ -3575,6 +3602,17 @@ void Viewport::_bind_methods() {
 	BIND_ENUM_CONSTANT(DEFAULT_CANVAS_ITEM_TEXTURE_REPEAT_ENABLED);
 	BIND_ENUM_CONSTANT(DEFAULT_CANVAS_ITEM_TEXTURE_REPEAT_MIRROR);
 	BIND_ENUM_CONSTANT(DEFAULT_CANVAS_ITEM_TEXTURE_REPEAT_MAX);
+
+	BIND_ENUM_CONSTANT(SDF_OVERSIZE_100_PERCENT);
+	BIND_ENUM_CONSTANT(SDF_OVERSIZE_120_PERCENT);
+	BIND_ENUM_CONSTANT(SDF_OVERSIZE_150_PERCENT);
+	BIND_ENUM_CONSTANT(SDF_OVERSIZE_200_PERCENT);
+	BIND_ENUM_CONSTANT(SDF_OVERSIZE_MAX);
+
+	BIND_ENUM_CONSTANT(SDF_SCALE_100_PERCENT);
+	BIND_ENUM_CONSTANT(SDF_SCALE_50_PERCENT);
+	BIND_ENUM_CONSTANT(SDF_SCALE_25_PERCENT);
+	BIND_ENUM_CONSTANT(SDF_SCALE_MAX);
 }
 
 Viewport::Viewport() {
@@ -3661,6 +3699,10 @@ Viewport::Viewport() {
 
 	default_canvas_item_texture_filter = DEFAULT_CANVAS_ITEM_TEXTURE_FILTER_LINEAR;
 	default_canvas_item_texture_repeat = DEFAULT_CANVAS_ITEM_TEXTURE_REPEAT_DISABLED;
+
+	sdf_oversize = SDF_OVERSIZE_120_PERCENT;
+	sdf_scale = SDF_SCALE_50_PERCENT;
+	set_sdf_oversize(SDF_OVERSIZE_120_PERCENT); //set to server
 }
 
 Viewport::~Viewport() {

scene/main/viewport.h

@@ -159,6 +159,21 @@ public:
 		DEFAULT_CANVAS_ITEM_TEXTURE_REPEAT_MAX,
 	};
 
+	enum SDFOversize {
+		SDF_OVERSIZE_100_PERCENT,
+		SDF_OVERSIZE_120_PERCENT,
+		SDF_OVERSIZE_150_PERCENT,
+		SDF_OVERSIZE_200_PERCENT,
+		SDF_OVERSIZE_MAX
+	};
+
+	enum SDFScale {
+		SDF_SCALE_100_PERCENT,
+		SDF_SCALE_50_PERCENT,
+		SDF_SCALE_25_PERCENT,
+		SDF_SCALE_MAX
+	};
+
 	enum {
 		SUBWINDOW_CANVAS_LAYER = 1024
 	};
@@ -285,6 +300,9 @@ private:
 	Ref<ViewportTexture> default_texture;
 	Set<ViewportTexture *> viewport_textures;
 
+	SDFOversize sdf_oversize;
+	SDFScale sdf_scale;
+
 	enum SubWindowDrag {
 		SUB_WINDOW_DRAG_DISABLED,
 		SUB_WINDOW_DRAG_MOVE,
@@ -572,6 +590,12 @@ public:
 
 	bool gui_is_dragging() const;
 
+	void set_sdf_oversize(SDFOversize p_sdf_oversize);
+	SDFOversize get_sdf_oversize() const;
+
+	void set_sdf_scale(SDFScale p_sdf_scale);
+	SDFScale get_sdf_scale() const;
+
 	void set_default_canvas_item_texture_filter(DefaultCanvasItemTextureFilter p_filter);
 	DefaultCanvasItemTextureFilter get_default_canvas_item_texture_filter() const;
 
@@ -650,6 +674,8 @@ VARIANT_ENUM_CAST(Viewport::ShadowAtlasQuadrantSubdiv);
 VARIANT_ENUM_CAST(Viewport::MSAA);
 VARIANT_ENUM_CAST(Viewport::ScreenSpaceAA);
 VARIANT_ENUM_CAST(Viewport::DebugDraw);
+VARIANT_ENUM_CAST(Viewport::SDFScale);
+VARIANT_ENUM_CAST(Viewport::SDFOversize);
 VARIANT_ENUM_CAST(SubViewport::ClearMode);
 VARIANT_ENUM_CAST(Viewport::RenderInfo);
 VARIANT_ENUM_CAST(Viewport::DefaultCanvasItemTextureFilter);

servers/rendering/rasterizer.h

@@ -752,6 +752,9 @@ public:
 	virtual void render_target_disable_clear_request(RID p_render_target) = 0;
 	virtual void render_target_do_clear_request(RID p_render_target) = 0;
 
+	virtual void render_target_set_sdf_size_and_scale(RID p_render_target, RS::ViewportSDFOversize p_size, RS::ViewportSDFScale p_scale) = 0;
+	virtual Rect2i render_target_get_sdf_rect(RID p_render_target) const = 0;
+
 	virtual RS::InstanceType get_base_type(RID p_rid) const = 0;
 	virtual bool free(RID p_rid) = 0;
 
@@ -1324,7 +1327,7 @@ public:
 		}
 	};
 
-	virtual void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel) = 0;
+	virtual void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel, bool &r_sdf_used) = 0;
 	virtual void canvas_debug_viewport_shadows(Light *p_lights_with_shadow) = 0;
 
 	struct LightOccluderInstance {
@@ -1336,12 +1339,14 @@ public:
 		Transform2D xform;
 		Transform2D xform_cache;
 		int light_mask;
+		bool sdf_collision;
 		RS::CanvasOccluderPolygonCullMode cull_cache;
 
 		LightOccluderInstance *next;
 
 		LightOccluderInstance() {
 			enabled = true;
+			sdf_collision = false;
 			next = nullptr;
 			light_mask = 1;
 			cull_cache = RS::CANVAS_OCCLUDER_POLYGON_CULL_DISABLED;
@@ -1354,8 +1359,10 @@ public:
 	virtual void light_update_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_near, float p_far, LightOccluderInstance *p_occluders) = 0;
 	virtual void light_update_directional_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_cull_distance, const Rect2 &p_clip_rect, LightOccluderInstance *p_occluders) = 0;
 
+	virtual void render_sdf(RID p_render_target, LightOccluderInstance *p_occluders) = 0;
+
 	virtual RID occluder_polygon_create() = 0;
-	virtual void occluder_polygon_set_shape_as_lines(RID p_occluder, const Vector<Vector2> &p_lines) = 0;
+	virtual void occluder_polygon_set_shape(RID p_occluder, const Vector<Vector2> &p_points, bool p_closed) = 0;
 	virtual void occluder_polygon_set_cull_mode(RID p_occluder, RS::CanvasOccluderPolygonCullMode p_mode) = 0;
 	virtual void set_shadow_texture_size(int p_size) = 0;
 

servers/rendering/rasterizer_rd/rasterizer_canvas_rd.cpp

@@ -30,6 +30,7 @@
 
 #include "rasterizer_canvas_rd.h"
 #include "core/config/project_settings.h"
+#include "core/math/geometry_2d.h"
 #include "core/math/math_funcs.h"
 #include "rasterizer_rd.h"
 
@@ -1050,11 +1051,20 @@ RID RasterizerCanvasRD::_create_base_uniform_set(RID p_to_render_target, bool p_
 		uniforms.push_back(u);
 	}
 
+	{
+		RD::Uniform u;
+		u.type = RD::UNIFORM_TYPE_TEXTURE;
+		u.binding = 7;
+		RID sdf = storage->render_target_get_sdf_texture(p_to_render_target);
+		u.ids.push_back(sdf);
+		uniforms.push_back(u);
+	}
+
 	{
 		//needs samplers for the material (uses custom textures) create them
 		RD::Uniform u;
 		u.type = RD::UNIFORM_TYPE_SAMPLER;
-		u.binding = 7;
+		u.binding = 8;
 		u.ids.resize(12);
 		RID *ids_ptr = u.ids.ptrw();
 		ids_ptr[0] = storage->sampler_rd_get_default(RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST, RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
@@ -1075,7 +1085,7 @@ RID RasterizerCanvasRD::_create_base_uniform_set(RID p_to_render_target, bool p_
 	{
 		RD::Uniform u;
 		u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER;
-		u.binding = 8;
+		u.binding = 9;
 		u.ids.push_back(storage->global_variables_get_storage_buffer());
 		uniforms.push_back(u);
 	}
@@ -1182,7 +1192,8 @@ void RasterizerCanvasRD::_render_items(RID p_to_render_target, int p_item_count,
 	RD::get_singleton()->draw_list_end();
 }
 
-void RasterizerCanvasRD::canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_light_list, const Transform2D &p_canvas_transform, RenderingServer::CanvasItemTextureFilter p_default_filter, RenderingServer::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel) {
+void RasterizerCanvasRD::canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_light_list, const Transform2D &p_canvas_transform, RenderingServer::CanvasItemTextureFilter p_default_filter, RenderingServer::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel, bool &r_sdf_used) {
+	r_sdf_used = false;
 	int item_count = 0;
 
 	//setup canvas state uniforms if needed
@@ -1365,6 +1376,25 @@ void RasterizerCanvasRD::canvas_render_items(RID p_to_render_target, Item *p_ite
 
 		state_buffer.directional_light_count = directional_light_count;
 
+		Vector2 canvas_scale = p_canvas_transform.get_scale();
+
+		state_buffer.sdf_to_screen[0] = render_target_size.width / canvas_scale.x;
+		state_buffer.sdf_to_screen[1] = render_target_size.height / canvas_scale.y;
+
+		state_buffer.screen_to_sdf[0] = 1.0 / state_buffer.sdf_to_screen[0];
+		state_buffer.screen_to_sdf[1] = 1.0 / state_buffer.sdf_to_screen[1];
+
+		Rect2 sdf_rect = storage->render_target_get_sdf_rect(p_to_render_target);
+		Rect2 sdf_tex_rect(sdf_rect.position / canvas_scale, sdf_rect.size / canvas_scale);
+
+		state_buffer.sdf_to_tex[0] = 1.0 / sdf_tex_rect.size.width;
+		state_buffer.sdf_to_tex[1] = 1.0 / sdf_tex_rect.size.height;
+		state_buffer.sdf_to_tex[2] = -sdf_tex_rect.position.x / sdf_tex_rect.size.width;
+		state_buffer.sdf_to_tex[3] = -sdf_tex_rect.position.y / sdf_tex_rect.size.height;
+
+		//print_line("w: " + itos(ssize.width) + " s: " + rtos(canvas_scale));
+		state_buffer.tex_to_sdf = 1.0 / ((canvas_scale.x + canvas_scale.y) * 0.5);
+
 		RD::get_singleton()->buffer_update(state.canvas_state_buffer, 0, sizeof(State::Buffer), &state_buffer, true);
 	}
 
@@ -1402,6 +1432,9 @@ void RasterizerCanvasRD::canvas_render_items(RID p_to_render_target, Item *p_ite
 					}
 				}
 
+				if (md->shader_data->uses_sdf) {
+					r_sdf_used = true;
+				}
 				if (md->last_frame != RasterizerRD::singleton->get_frame_number()) {
 					md->last_frame = RasterizerRD::singleton->get_frame_number();
 					if (!RD::get_singleton()->uniform_set_is_valid(md->uniform_set)) {
@@ -1687,18 +1720,102 @@ void RasterizerCanvasRD::light_update_directional_shadow(RID p_rid, int p_shadow
 	cl->shadow.directional_xform = to_shadow * to_light_xform;
 }
 
+void RasterizerCanvasRD::render_sdf(RID p_render_target, LightOccluderInstance *p_occluders) {
+	RID fb = storage->render_target_get_sdf_framebuffer(p_render_target);
+	Rect2i rect = storage->render_target_get_sdf_rect(p_render_target);
+
+	Transform2D to_sdf;
+	to_sdf.elements[0] *= rect.size.width;
+	to_sdf.elements[1] *= rect.size.height;
+	to_sdf.elements[2] = rect.position;
+
+	Transform2D to_clip;
+	to_clip.elements[0] *= 2.0;
+	to_clip.elements[1] *= 2.0;
+	to_clip.elements[2] = -Vector2(1.0, 1.0);
+
+	to_clip = to_clip * to_sdf.affine_inverse();
+
+	Vector<Color> cc;
+	cc.push_back(Color(0, 0, 0, 0));
+
+	RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(fb, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_DISCARD, cc);
+
+	CameraMatrix projection;
+
+	ShadowRenderPushConstant push_constant;
+	for (int y = 0; y < 4; y++) {
+		for (int x = 0; x < 4; x++) {
+			push_constant.projection[y * 4 + x] = projection.matrix[y][x];
+		}
+	}
+
+	push_constant.direction[0] = 0.0;
+	push_constant.direction[1] = 0.0;
+	push_constant.z_far = 0;
+	push_constant.pad = 0;
+
+	LightOccluderInstance *instance = p_occluders;
+
+	while (instance) {
+		OccluderPolygon *co = occluder_polygon_owner.getornull(instance->occluder);
+
+		if (!co || co->sdf_index_array.is_null()) {
+			instance = instance->next;
+			continue;
+		}
+
+		_update_transform_2d_to_mat2x4(to_clip * instance->xform_cache, push_constant.modelview);
+
+		RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, shadow_render.sdf_render_pipelines[co->sdf_is_lines ? SHADOW_RENDER_SDF_LINES : SHADOW_RENDER_SDF_TRIANGLES]);
+		RD::get_singleton()->draw_list_bind_vertex_array(draw_list, co->sdf_vertex_array);
+		RD::get_singleton()->draw_list_bind_index_array(draw_list, co->sdf_index_array);
+		RD::get_singleton()->draw_list_set_push_constant(draw_list, &push_constant, sizeof(ShadowRenderPushConstant));
+
+		RD::get_singleton()->draw_list_draw(draw_list, true);
+
+		instance = instance->next;
+	}
+
+	RD::get_singleton()->draw_list_end();
+
+	storage->render_target_sdf_process(p_render_target); //done rendering, process it
+}
+
 RID RasterizerCanvasRD::occluder_polygon_create() {
 	OccluderPolygon occluder;
-	occluder.point_count = 0;
+	occluder.line_point_count = 0;
+	occluder.sdf_point_count = 0;
+	occluder.sdf_index_count = 0;
 	occluder.cull_mode = RS::CANVAS_OCCLUDER_POLYGON_CULL_DISABLED;
 	return occluder_polygon_owner.make_rid(occluder);
 }
 
-void RasterizerCanvasRD::occluder_polygon_set_shape_as_lines(RID p_occluder, const Vector<Vector2> &p_lines) {
+void RasterizerCanvasRD::occluder_polygon_set_shape(RID p_occluder, const Vector<Vector2> &p_points, bool p_closed) {
 	OccluderPolygon *oc = occluder_polygon_owner.getornull(p_occluder);
 	ERR_FAIL_COND(!oc);
 
-	if (oc->point_count != p_lines.size() && oc->vertex_array.is_valid()) {
+	Vector<Vector2> lines;
+	int lc = p_points.size() * 2;
+
+	lines.resize(lc - (p_closed ? 0 : 2));
+	{
+		Vector2 *w = lines.ptrw();
+		const Vector2 *r = p_points.ptr();
+
+		int max = lc / 2;
+		if (!p_closed) {
+			max--;
+		}
+		for (int i = 0; i < max; i++) {
+			Vector2 a = r[i];
+			Vector2 b = r[(i + 1) % (lc / 2)];
+			w[i * 2 + 0] = a;
+			w[i * 2 + 1] = b;
+		}
+	}
+
+	if (oc->line_point_count != lines.size() && oc->vertex_array.is_valid()) {
 		RD::get_singleton()->free(oc->vertex_array);
 		RD::get_singleton()->free(oc->vertex_buffer);
 		RD::get_singleton()->free(oc->index_array);
@@ -1708,12 +1825,14 @@ void RasterizerCanvasRD::occluder_polygon_set_shape_as_lines(RID p_occluder, con
 		oc->vertex_buffer = RID();
 		oc->index_array = RID();
 		oc->index_buffer = RID();
+
+		oc->line_point_count = lines.size();
 	}
 
-	if (p_lines.size()) {
+	if (lines.size()) {
 		Vector<uint8_t> geometry;
 		Vector<uint8_t> indices;
-		int lc = p_lines.size();
+		lc = lines.size();
 
 		geometry.resize(lc * 6 * sizeof(float));
 		indices.resize(lc * 3 * sizeof(uint16_t));
@@ -1724,7 +1843,7 @@ void RasterizerCanvasRD::occluder_polygon_set_shape_as_lines(RID p_occluder, con
 			uint8_t *iw = indices.ptrw();
 			uint16_t *iwptr = (uint16_t *)iw;
 
-			const Vector2 *lr = p_lines.ptr();
+			const Vector2 *lr = lines.ptr();
 
 			const int POLY_HEIGHT = 16384;
 
@@ -1778,6 +1897,62 @@ void RasterizerCanvasRD::occluder_polygon_set_shape_as_lines(RID p_occluder, con
 			RD::get_singleton()->buffer_update(oc->index_buffer, 0, indices.size(), ir);
 		}
 	}
+
+	// sdf
+
+	Vector<int> sdf_indices;
+
+	if (p_closed) {
+		sdf_indices = Geometry2D::triangulate_polygon(p_points);
+		oc->sdf_is_lines = false;
+	} else {
+		int max = p_points.size();
+		sdf_indices.resize(max * 2);
+
+		int *iw = sdf_indices.ptrw();
+		for (int i = 0; i < max; i++) {
+			iw[i * 2 + 0] = i;
+			iw[i * 2 + 1] = (i + 1) % max;
+		}
+		oc->sdf_is_lines = true;
+	}
+
+	if (oc->sdf_index_count != sdf_indices.size() && oc->sdf_point_count != p_points.size() && oc->sdf_vertex_array.is_valid()) {
+		RD::get_singleton()->free(oc->sdf_vertex_array);
+		RD::get_singleton()->free(oc->sdf_vertex_buffer);
+		RD::get_singleton()->free(oc->sdf_index_array);
+		RD::get_singleton()->free(oc->sdf_index_buffer);
+
+		oc->sdf_vertex_array = RID();
+		oc->sdf_vertex_buffer = RID();
+		oc->sdf_index_array = RID();
+		oc->sdf_index_buffer = RID();
+
+		oc->sdf_index_count = sdf_indices.size();
+		oc->sdf_point_count = p_points.size();
+
+		oc->sdf_is_lines = false;
+	}
+
+	if (sdf_indices.size()) {
+		if (oc->sdf_vertex_array.is_null()) {
+			//create from scratch
+			//vertices
+			oc->sdf_vertex_buffer = RD::get_singleton()->vertex_buffer_create(p_points.size() * 2 * sizeof(real_t), p_points.to_byte_array());
+			oc->sdf_index_buffer = RD::get_singleton()->index_buffer_create(sdf_indices.size(), RD::INDEX_BUFFER_FORMAT_UINT32, sdf_indices.to_byte_array());
+			oc->sdf_index_array = RD::get_singleton()->index_array_create(oc->sdf_index_buffer, 0, sdf_indices.size());
+
+			Vector<RID> buffer;
+			buffer.push_back(oc->sdf_vertex_buffer);
+			oc->sdf_vertex_array = RD::get_singleton()->vertex_array_create(p_points.size(), shadow_render.sdf_vertex_format, buffer);
+			//indices
+
+		} else {
+			//update existing
+			RD::get_singleton()->buffer_update(oc->vertex_buffer, 0, sizeof(real_t) * 2 * p_points.size(), p_points.ptr());
+			RD::get_singleton()->buffer_update(oc->index_buffer, 0, sdf_indices.size() * sizeof(int32_t), sdf_indices.ptr());
+		}
+	}
 }
 
 void RasterizerCanvasRD::occluder_polygon_set_cull_mode(RID p_occluder, RS::CanvasOccluderPolygonCullMode p_mode) {
@@ -1794,6 +1969,7 @@ void RasterizerCanvasRD::ShaderData::set_code(const String &p_code) {
 	ubo_size = 0;
 	uniforms.clear();
 	uses_screen_texture = false;
+	uses_sdf = false;
 
 	if (code == String()) {
 		return; //just invalid, but no error
@@ -1801,7 +1977,6 @@ void RasterizerCanvasRD::ShaderData::set_code(const String &p_code) {
 
 	ShaderCompilerRD::GeneratedCode gen_code;
 
-	int light_mode = LIGHT_MODE_NORMAL;
 	int blend_mode = BLEND_MODE_MIX;
 	uses_screen_texture = false;
 
@@ -1814,10 +1989,8 @@ void RasterizerCanvasRD::ShaderData::set_code(const String &p_code) {
 	actions.render_mode_values["blend_premul_alpha"] = Pair<int *, int>(&blend_mode, BLEND_MODE_PMALPHA);
 	actions.render_mode_values["blend_disabled"] = Pair<int *, int>(&blend_mode, BLEND_MODE_DISABLED);
 
-	actions.render_mode_values["unshaded"] = Pair<int *, int>(&light_mode, LIGHT_MODE_UNSHADED);
-	actions.render_mode_values["light_only"] = Pair<int *, int>(&light_mode, LIGHT_MODE_LIGHT_ONLY);
-
 	actions.usage_flag_pointers["SCREEN_TEXTURE"] = &uses_screen_texture;
+	actions.usage_flag_pointers["texture_sdf"] = &uses_sdf;
 
 	actions.uniforms = &uniforms;
 
@@ -2038,6 +2211,7 @@ Variant RasterizerCanvasRD::ShaderData::get_default_parameter(const StringName &
 RasterizerCanvasRD::ShaderData::ShaderData() {
 	valid = false;
 	uses_screen_texture = false;
+	uses_sdf = false;
 }
 
 RasterizerCanvasRD::ShaderData::~ShaderData() {
@@ -2302,6 +2476,11 @@ RasterizerCanvasRD::RasterizerCanvasRD(RasterizerStorageRD *p_storage) {
 		actions.renames["LIGHT"] = "light";
 		actions.renames["SHADOW_MODULATE"] = "shadow_modulate";
 
+		actions.renames["texture_sdf"] = "texture_sdf";
+		actions.renames["texture_sdf_normal"] = "texture_sdf_normal";
+		actions.renames["sdf_to_screen_uv"] = "sdf_to_screen_uv";
+		actions.renames["screen_uv_to_sdf"] = "screen_uv_to_sdf";
+
 		actions.usage_defines["COLOR"] = "#define COLOR_USED\n";
 		actions.usage_defines["SCREEN_TEXTURE"] = "#define SCREEN_TEXTURE_USED\n";
 		actions.usage_defines["SCREEN_UV"] = "#define SCREEN_UV_USED\n";
@@ -2311,6 +2490,8 @@ RasterizerCanvasRD::RasterizerCanvasRD(RasterizerStorageRD *p_storage) {
 		actions.usage_defines["LIGHT"] = "#define LIGHT_SHADER_CODE_USED\n";
 
 		actions.render_mode_defines["skip_vertex_transform"] = "#define SKIP_TRANSFORM_USED\n";
+		actions.render_mode_defines["unshaded"] = "#define MODE_UNSHADED\n";
+		actions.render_mode_defines["light_only"] = "#define MODE_LIGHT_ONLY\n";
 
 		actions.custom_samplers["TEXTURE"] = "texture_sampler";
 		actions.custom_samplers["NORMAL_TEXTURE"] = "texture_sampler";
@@ -2331,7 +2512,8 @@ RasterizerCanvasRD::RasterizerCanvasRD(RasterizerStorageRD *p_storage) {
 
 	{ //shadow rendering
 		Vector<String> versions;
-		versions.push_back(String()); //no versions
+		versions.push_back("\n#define MODE_SHADOW\n"); //shadow
+		versions.push_back("\n#define MODE_SDF\n"); //sdf
 		shadow_render.shader.initialize(versions);
 
 		{
@@ -2352,16 +2534,34 @@ RasterizerCanvasRD::RasterizerCanvasRD(RasterizerStorageRD *p_storage) {
 			shadow_render.framebuffer_format = RD::get_singleton()->framebuffer_format_create(attachments);
 		}
 
+		{
+			Vector<RD::AttachmentFormat> attachments;
+
+			RD::AttachmentFormat af_color;
+			af_color.format = RD::DATA_FORMAT_R8_UNORM;
+			af_color.usage_flags = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_STORAGE_BIT | RD::TEXTURE_USAGE_COLOR_ATTACHMENT_BIT;
+
+			attachments.push_back(af_color);
+
+			shadow_render.sdf_framebuffer_format = RD::get_singleton()->framebuffer_format_create(attachments);
+		}
+
 		//pipelines
 		Vector<RD::VertexAttribute> vf;
 		RD::VertexAttribute vd;
-		vd.format = RD::DATA_FORMAT_R32G32B32_SFLOAT;
+		vd.format = sizeof(real_t) == sizeof(float) ? RD::DATA_FORMAT_R32G32B32_SFLOAT : RD::DATA_FORMAT_R64G64B64_SFLOAT;
 		vd.location = 0;
 		vd.offset = 0;
-		vd.stride = sizeof(float) * 3;
+		vd.stride = sizeof(real_t) * 3;
 		vf.push_back(vd);
 		shadow_render.vertex_format = RD::get_singleton()->vertex_format_create(vf);
 
+		vd.format = sizeof(real_t) == sizeof(float) ? RD::DATA_FORMAT_R32G32_SFLOAT : RD::DATA_FORMAT_R64G64_SFLOAT;
+		vd.stride = sizeof(real_t) * 2;
+
+		vf.write[0] = vd;
+		shadow_render.sdf_vertex_format = RD::get_singleton()->vertex_format_create(vf);
+
 		shadow_render.shader_version = shadow_render.shader.version_create();
 
 		for (int i = 0; i < 3; i++) {
@@ -2371,7 +2571,11 @@ RasterizerCanvasRD::RasterizerCanvasRD(RasterizerStorageRD *p_storage) {
 			ds.enable_depth_write = true;
 			ds.enable_depth_test = true;
 			ds.depth_compare_operator = RD::COMPARE_OP_LESS;
-			shadow_render.render_pipelines[i] = RD::get_singleton()->render_pipeline_create(shadow_render.shader.version_get_shader(shadow_render.shader_version, 0), shadow_render.framebuffer_format, shadow_render.vertex_format, RD::RENDER_PRIMITIVE_TRIANGLES, rs, RD::PipelineMultisampleState(), ds, RD::PipelineColorBlendState::create_disabled(), 0);
+			shadow_render.render_pipelines[i] = RD::get_singleton()->render_pipeline_create(shadow_render.shader.version_get_shader(shadow_render.shader_version, SHADOW_RENDER_MODE_SHADOW), shadow_render.framebuffer_format, shadow_render.vertex_format, RD::RENDER_PRIMITIVE_TRIANGLES, rs, RD::PipelineMultisampleState(), ds, RD::PipelineColorBlendState::create_disabled(), 0);
+		}
+
+		for (int i = 0; i < 2; i++) {
+			shadow_render.sdf_render_pipelines[i] = RD::get_singleton()->render_pipeline_create(shadow_render.shader.version_get_shader(shadow_render.shader_version, SHADOW_RENDER_MODE_SDF), shadow_render.sdf_framebuffer_format, shadow_render.sdf_vertex_format, i == 0 ? RD::RENDER_PRIMITIVE_TRIANGLES : RD::RENDER_PRIMITIVE_LINES, RD::PipelineRasterizationState(), RD::PipelineMultisampleState(), RD::PipelineDepthStencilState(), RD::PipelineColorBlendState::create_disabled(), 0);
 		}
 	}
 
@@ -2482,7 +2686,7 @@ bool RasterizerCanvasRD::free(RID p_rid) {
 		light_set_use_shadow(p_rid, false);
 		canvas_light_owner.free(p_rid);
 	} else if (occluder_polygon_owner.owns(p_rid)) {
-		occluder_polygon_set_shape_as_lines(p_rid, Vector<Vector2>());
+		occluder_polygon_set_shape(p_rid, Vector<Vector2>(), false);
 		occluder_polygon_owner.free(p_rid);
 	} else {
 		return false;

servers/rendering/rasterizer_rd/rasterizer_canvas_rd.h

@@ -161,12 +161,6 @@ class RasterizerCanvasRD : public RasterizerCanvas {
 			BLEND_MODE_DISABLED,
 		};
 
-		enum LightMode {
-			LIGHT_MODE_NORMAL,
-			LIGHT_MODE_UNSHADED,
-			LIGHT_MODE_LIGHT_ONLY
-		};
-
 		bool valid;
 		RID version;
 		PipelineVariants pipeline_variants;
@@ -181,7 +175,8 @@ class RasterizerCanvasRD : public RasterizerCanvas {
 		String code;
 		Map<StringName, RID> default_texture_params;
 
-		bool uses_screen_texture;
+		bool uses_screen_texture = false;
+		bool uses_sdf = false;
 
 		virtual void set_code(const String &p_Code);
 		virtual void set_default_texture_param(const StringName &p_name, RID p_texture);
@@ -284,11 +279,19 @@ class RasterizerCanvasRD : public RasterizerCanvas {
 
 	struct OccluderPolygon {
 		RS::CanvasOccluderPolygonCullMode cull_mode;
-		int point_count;
+		int line_point_count;
 		RID vertex_buffer;
 		RID vertex_array;
 		RID index_buffer;
 		RID index_array;
+
+		int sdf_point_count;
+		int sdf_index_count;
+		RID sdf_vertex_buffer;
+		RID sdf_vertex_array;
+		RID sdf_index_buffer;
+		RID sdf_index_array;
+		bool sdf_is_lines;
 	};
 
 	struct LightUniform {
@@ -310,12 +313,25 @@ class RasterizerCanvasRD : public RasterizerCanvas {
 
 	RID_Owner<OccluderPolygon> occluder_polygon_owner;
 
+	enum ShadowRenderMode {
+		SHADOW_RENDER_MODE_SHADOW,
+		SHADOW_RENDER_MODE_SDF,
+	};
+
+	enum {
+		SHADOW_RENDER_SDF_TRIANGLES,
+		SHADOW_RENDER_SDF_LINES,
+	};
+
 	struct {
 		CanvasOcclusionShaderRD shader;
 		RID shader_version;
 		RID render_pipelines[3];
+		RID sdf_render_pipelines[2];
 		RD::VertexFormatID vertex_format;
+		RD::VertexFormatID sdf_vertex_format;
 		RD::FramebufferFormatID framebuffer_format;
+		RD::FramebufferFormatID sdf_framebuffer_format;
 	} shadow_render;
 
 	/***************/
@@ -336,8 +352,14 @@ class RasterizerCanvasRD : public RasterizerCanvas {
 			float time;
 			uint32_t use_pixel_snap;
 
+			float sdf_to_tex[4];
+			float sdf_to_screen[2];
+			float screen_to_sdf[2];
+
 			uint32_t directional_light_count;
-			uint32_t pad[3];
+			float tex_to_sdf;
+			uint32_t pad1;
+			uint32_t pad2;
 		};
 
 		LightUniform *light_uniforms;
@@ -423,11 +445,13 @@ public:
 	void light_update_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_near, float p_far, LightOccluderInstance *p_occluders);
 	void light_update_directional_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_cull_distance, const Rect2 &p_clip_rect, LightOccluderInstance *p_occluders);
 
+	virtual void render_sdf(RID p_render_target, LightOccluderInstance *p_occluders);
+
 	RID occluder_polygon_create();
-	void occluder_polygon_set_shape_as_lines(RID p_occluder, const Vector<Vector2> &p_lines);
+	void occluder_polygon_set_shape(RID p_occluder, const Vector<Vector2> &p_points, bool p_closed);
 	void occluder_polygon_set_cull_mode(RID p_occluder, RS::CanvasOccluderPolygonCullMode p_mode);
 
-	void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_light_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel);
+	void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_light_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel, bool &r_sdf_used);
 
 	void canvas_debug_viewport_shadows(Light *p_lights_with_shadow) {}
 

servers/rendering/rasterizer_rd/rasterizer_storage_rd.cpp

@@ -6029,6 +6029,8 @@ void RasterizerStorageRD::_clear_render_target(RenderTarget *rt) {
 		rt->backbuffer_uniform_set = RID(); //chain deleted
 	}
 
+	_render_target_clear_sdf(rt);
+
 	rt->framebuffer = RID();
 	rt->color = RID();
 }
@@ -6299,6 +6301,275 @@ void RasterizerStorageRD::render_target_do_clear_request(RID p_render_target) {
 	rt->clear_requested = false;
 }
 
+void RasterizerStorageRD::render_target_set_sdf_size_and_scale(RID p_render_target, RS::ViewportSDFOversize p_size, RS::ViewportSDFScale p_scale) {
+	RenderTarget *rt = render_target_owner.getornull(p_render_target);
+	ERR_FAIL_COND(!rt);
+	if (rt->sdf_oversize == p_size && rt->sdf_scale == p_scale) {
+		return;
+	}
+
+	rt->sdf_oversize = p_size;
+	rt->sdf_scale = p_scale;
+
+	_render_target_clear_sdf(rt);
+}
+
+Rect2i RasterizerStorageRD::_render_target_get_sdf_rect(const RenderTarget *rt) const {
+	Size2i margin;
+	int scale;
+	switch (rt->sdf_oversize) {
+		case RS::VIEWPORT_SDF_OVERSIZE_100_PERCENT: {
+			scale = 100;
+		} break;
+		case RS::VIEWPORT_SDF_OVERSIZE_120_PERCENT: {
+			scale = 120;
+		} break;
+		case RS::VIEWPORT_SDF_OVERSIZE_150_PERCENT: {
+			scale = 150;
+		} break;
+		case RS::VIEWPORT_SDF_OVERSIZE_200_PERCENT: {
+			scale = 200;
+		} break;
+		default: {
+		}
+	}
+
+	margin = (rt->size * scale / 100) - rt->size;
+
+	Rect2i r(Vector2i(), rt->size);
+	r.position -= margin;
+	r.size += margin * 2;
+
+	return r;
+}
+
+Rect2i RasterizerStorageRD::render_target_get_sdf_rect(RID p_render_target) const {
+	const RenderTarget *rt = render_target_owner.getornull(p_render_target);
+	ERR_FAIL_COND_V(!rt, Rect2i());
+
+	return _render_target_get_sdf_rect(rt);
+}
+
+RID RasterizerStorageRD::render_target_get_sdf_texture(RID p_render_target) {
+	RenderTarget *rt = render_target_owner.getornull(p_render_target);
+	ERR_FAIL_COND_V(!rt, RID());
+	if (rt->sdf_buffer_read.is_null()) {
+		// no texture, create a dummy one for the 2D uniform set
+		RD::TextureFormat tformat;
+		tformat.format = RD::DATA_FORMAT_R8G8B8A8_UNORM;
+		tformat.width = 4;
+		tformat.height = 4;
+		tformat.usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT;
+		tformat.type = RD::TEXTURE_TYPE_2D;
+
+		Vector<uint8_t> pv;
+		pv.resize(16 * 4);
+		zeromem(pv.ptrw(), 16 * 4);
+		Vector<Vector<uint8_t>> vpv;
+
+		rt->sdf_buffer_read = RD::get_singleton()->texture_create(tformat, RD::TextureView(), vpv);
+	}
+
+	return rt->sdf_buffer_read;
+}
+
+void RasterizerStorageRD::_render_target_allocate_sdf(RenderTarget *rt) {
+	ERR_FAIL_COND(rt->sdf_buffer_write_fb.is_valid());
+	if (rt->sdf_buffer_read.is_valid()) {
+		RD::get_singleton()->free(rt->sdf_buffer_read);
+		rt->sdf_buffer_read = RID();
+	}
+
+	Size2i size = _render_target_get_sdf_rect(rt).size;
+
+	RD::TextureFormat tformat;
+	tformat.format = RD::DATA_FORMAT_R8_UNORM;
+	tformat.width = size.width;
+	tformat.height = size.height;
+	tformat.usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_STORAGE_BIT | RD::TEXTURE_USAGE_COLOR_ATTACHMENT_BIT;
+	tformat.type = RD::TEXTURE_TYPE_2D;
+
+	rt->sdf_buffer_write = RD::get_singleton()->texture_create(tformat, RD::TextureView());
+
+	{
+		Vector<RID> write_fb;
+		write_fb.push_back(rt->sdf_buffer_write);
+		rt->sdf_buffer_write_fb = RD::get_singleton()->framebuffer_create(write_fb);
+	}
+
+	int scale;
+	switch (rt->sdf_scale) {
+		case RS::VIEWPORT_SDF_SCALE_100_PERCENT: {
+			scale = 100;
+		} break;
+		case RS::VIEWPORT_SDF_SCALE_50_PERCENT: {
+			scale = 50;
+		} break;
+		case RS::VIEWPORT_SDF_SCALE_25_PERCENT: {
+			scale = 25;
+		} break;
+		default: {
+			scale = 100;
+		} break;
+	}
+
+	rt->process_size = size * scale / 100;
+	rt->process_size.x = MAX(rt->process_size.x, 1);
+	rt->process_size.y = MAX(rt->process_size.y, 1);
+
+	tformat.format = RD::DATA_FORMAT_R16G16_UINT;
+	tformat.width = rt->process_size.width;
+	tformat.height = rt->process_size.height;
+	tformat.usage_bits = RD::TEXTURE_USAGE_STORAGE_BIT;
+
+	rt->sdf_buffer_process[0] = RD::get_singleton()->texture_create(tformat, RD::TextureView());
+	rt->sdf_buffer_process[1] = RD::get_singleton()->texture_create(tformat, RD::TextureView());
+
+	tformat.format = RD::DATA_FORMAT_R16_UNORM;
+	tformat.usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_STORAGE_BIT;
+
+	rt->sdf_buffer_read = RD::get_singleton()->texture_create(tformat, RD::TextureView());
+
+	{
+		Vector<RD::Uniform> uniforms;
+		{
+			RD::Uniform u;
+			u.type = RD::UNIFORM_TYPE_IMAGE;
+			u.binding = 1;
+			u.ids.push_back(rt->sdf_buffer_write);
+			uniforms.push_back(u);
+		}
+		{
+			RD::Uniform u;
+			u.type = RD::UNIFORM_TYPE_IMAGE;
+			u.binding = 2;
+			u.ids.push_back(rt->sdf_buffer_read);
+			uniforms.push_back(u);
+		}
+		{
+			RD::Uniform u;
+			u.type = RD::UNIFORM_TYPE_IMAGE;
+			u.binding = 3;
+			u.ids.push_back(rt->sdf_buffer_process[0]);
+			uniforms.push_back(u);
+		}
+		{
+			RD::Uniform u;
+			u.type = RD::UNIFORM_TYPE_IMAGE;
+			u.binding = 4;
+			u.ids.push_back(rt->sdf_buffer_process[1]);
+			uniforms.push_back(u);
+		}
+
+		rt->sdf_buffer_process_uniform_sets[0] = RD::get_singleton()->uniform_set_create(uniforms, rt_sdf.shader.version_get_shader(rt_sdf.shader_version, 0), 0);
+		SWAP(uniforms.write[2].ids.write[0], uniforms.write[3].ids.write[0]);
+		rt->sdf_buffer_process_uniform_sets[1] = RD::get_singleton()->uniform_set_create(uniforms, rt_sdf.shader.version_get_shader(rt_sdf.shader_version, 0), 0);
+	}
+}
+
+void RasterizerStorageRD::_render_target_clear_sdf(RenderTarget *rt) {
+	if (rt->sdf_buffer_read.is_valid()) {
+		RD::get_singleton()->free(rt->sdf_buffer_read);
+		rt->sdf_buffer_read = RID();
+	}
+	if (rt->sdf_buffer_write_fb.is_valid()) {
+		RD::get_singleton()->free(rt->sdf_buffer_write);
+		RD::get_singleton()->free(rt->sdf_buffer_process[0]);
+		RD::get_singleton()->free(rt->sdf_buffer_process[1]);
+		rt->sdf_buffer_write = RID();
+		rt->sdf_buffer_write_fb = RID();
+		rt->sdf_buffer_process[0] = RID();
+		rt->sdf_buffer_process[1] = RID();
+		rt->sdf_buffer_process_uniform_sets[0] = RID();
+		rt->sdf_buffer_process_uniform_sets[1] = RID();
+	}
+}
+
+RID RasterizerStorageRD::render_target_get_sdf_framebuffer(RID p_render_target) {
+	RenderTarget *rt = render_target_owner.getornull(p_render_target);
+	ERR_FAIL_COND_V(!rt, RID());
+
+	if (rt->sdf_buffer_write_fb.is_null()) {
+		_render_target_allocate_sdf(rt);
+	}
+
+	return rt->sdf_buffer_write_fb;
+}
+void RasterizerStorageRD::render_target_sdf_process(RID p_render_target) {
+	RenderTarget *rt = render_target_owner.getornull(p_render_target);
+	ERR_FAIL_COND(!rt);
+	ERR_FAIL_COND(rt->sdf_buffer_write_fb.is_null());
+
+	RenderTargetSDF::PushConstant push_constant;
+
+	Rect2i r = _render_target_get_sdf_rect(rt);
+
+	push_constant.size[0] = r.size.width;
+	push_constant.size[1] = r.size.height;
+	push_constant.stride = 0;
+	push_constant.shift = 0;
+	push_constant.base_size[0] = r.size.width;
+	push_constant.base_size[1] = r.size.height;
+
+	bool shrink = false;
+
+	switch (rt->sdf_scale) {
+		case RS::VIEWPORT_SDF_SCALE_50_PERCENT: {
+			push_constant.size[0] >>= 1;
+			push_constant.size[1] >>= 1;
+			push_constant.shift = 1;
+			shrink = true;
+		} break;
+		case RS::VIEWPORT_SDF_SCALE_25_PERCENT: {
+			push_constant.size[0] >>= 2;
+			push_constant.size[1] >>= 2;
+			push_constant.shift = 2;
+			shrink = true;
+		} break;
+		default: {
+		};
+	}
+
+	RD::ComputeListID compute_list = RD::get_singleton()->compute_list_begin();
+
+	/* Load */
+
+	RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, rt_sdf.pipelines[shrink ? RenderTargetSDF::SHADER_LOAD_SHRINK : RenderTargetSDF::SHADER_LOAD]);
+	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, rt->sdf_buffer_process_uniform_sets[1], 0); //fill [0]
+	RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(RenderTargetSDF::PushConstant));
+
+	RD::get_singleton()->compute_list_dispatch_threads(compute_list, push_constant.size[0], push_constant.size[1], 1, 8, 8, 1);
+
+	/* Process */
+
+	int stride = nearest_power_of_2_templated(MAX(push_constant.size[0], push_constant.size[1]) / 2);
+
+	RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, rt_sdf.pipelines[RenderTargetSDF::SHADER_PROCESS]);
+
+	RD::get_singleton()->compute_list_add_barrier(compute_list);
+	bool swap = false;
+
+	//jumpflood
+	while (stride > 0) {
+		RD::get_singleton()->compute_list_bind_uniform_set(compute_list, rt->sdf_buffer_process_uniform_sets[swap ? 1 : 0], 0);
+		push_constant.stride = stride;
+		RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(RenderTargetSDF::PushConstant));
+		RD::get_singleton()->compute_list_dispatch_threads(compute_list, push_constant.size[0], push_constant.size[1], 1, 8, 8, 1);
+		stride /= 2;
+		swap = !swap;
+		RD::get_singleton()->compute_list_add_barrier(compute_list);
+	}
+
+	/* Store */
+
+	RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, rt_sdf.pipelines[shrink ? RenderTargetSDF::SHADER_STORE_SHRINK : RenderTargetSDF::SHADER_STORE]);
+	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, rt->sdf_buffer_process_uniform_sets[swap ? 1 : 0], 0);
+	RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(RenderTargetSDF::PushConstant));
+	RD::get_singleton()->compute_list_dispatch_threads(compute_list, push_constant.size[0], push_constant.size[1], 1, 8, 8, 1);
+
+	RD::get_singleton()->compute_list_end();
+}
+
 void RasterizerStorageRD::render_target_copy_to_back_buffer(RID p_render_target, const Rect2i &p_region, bool p_gen_mipmaps) {
 	RenderTarget *rt = render_target_owner.getornull(p_render_target);
 	ERR_FAIL_COND(!rt);
@@ -8155,6 +8426,24 @@ RasterizerStorageRD::RasterizerStorageRD() {
 			particles_shader.copy_pipelines[i] = RD::get_singleton()->compute_pipeline_create(particles_shader.copy_shader.version_get_shader(particles_shader.copy_shader_version, i));
 		}
 	}
+
+	{
+		Vector<String> sdf_modes;
+		sdf_modes.push_back("\n#define MODE_LOAD\n");
+		sdf_modes.push_back("\n#define MODE_LOAD_SHRINK\n");
+		sdf_modes.push_back("\n#define MODE_PROCESS\n");
+		sdf_modes.push_back("\n#define MODE_PROCESS_OPTIMIZED\n");
+		sdf_modes.push_back("\n#define MODE_STORE\n");
+		sdf_modes.push_back("\n#define MODE_STORE_SHRINK\n");
+
+		rt_sdf.shader.initialize(sdf_modes);
+
+		rt_sdf.shader_version = rt_sdf.shader.version_create();
+
+		for (int i = 0; i < RenderTargetSDF::SHADER_MAX; i++) {
+			rt_sdf.pipelines[i] = RD::get_singleton()->compute_pipeline_create(rt_sdf.shader.version_get_shader(rt_sdf.shader_version, i));
+		}
+	}
 }
 
 RasterizerStorageRD::~RasterizerStorageRD() {

servers/rendering/rasterizer_rd/rasterizer_storage_rd.h

@@ -35,6 +35,7 @@
 #include "servers/rendering/rasterizer.h"
 #include "servers/rendering/rasterizer_rd/rasterizer_effects_rd.h"
 #include "servers/rendering/rasterizer_rd/shader_compiler_rd.h"
+#include "servers/rendering/rasterizer_rd/shaders/canvas_sdf.glsl.gen.h"
 #include "servers/rendering/rasterizer_rd/shaders/giprobe_sdf.glsl.gen.h"
 #include "servers/rendering/rasterizer_rd/shaders/particles.glsl.gen.h"
 #include "servers/rendering/rasterizer_rd/shaders/particles_copy.glsl.gen.h"
@@ -1003,6 +1004,15 @@ private:
 		RID framebuffer_uniform_set;
 		RID backbuffer_uniform_set;
 
+		RID sdf_buffer_write;
+		RID sdf_buffer_write_fb;
+		RID sdf_buffer_process[2];
+		RID sdf_buffer_read;
+		RID sdf_buffer_process_uniform_sets[2];
+		RS::ViewportSDFOversize sdf_oversize = RS::VIEWPORT_SDF_OVERSIZE_120_PERCENT;
+		RS::ViewportSDFScale sdf_scale = RS::VIEWPORT_SDF_SCALE_50_PERCENT;
+		Size2i process_size;
+
 		//texture generated for this owner (nor RD).
 		RID texture;
 		bool was_used;
@@ -1012,11 +1022,38 @@ private:
 		Color clear_color;
 	};
 
-	RID_Owner<RenderTarget> render_target_owner;
+	mutable RID_Owner<RenderTarget> render_target_owner;
 
 	void _clear_render_target(RenderTarget *rt);
 	void _update_render_target(RenderTarget *rt);
 	void _create_render_target_backbuffer(RenderTarget *rt);
+	void _render_target_allocate_sdf(RenderTarget *rt);
+	void _render_target_clear_sdf(RenderTarget *rt);
+	Rect2i _render_target_get_sdf_rect(const RenderTarget *rt) const;
+
+	struct RenderTargetSDF {
+		enum {
+			SHADER_LOAD,
+			SHADER_LOAD_SHRINK,
+			SHADER_PROCESS,
+			SHADER_PROCESS_OPTIMIZED,
+			SHADER_STORE,
+			SHADER_STORE_SHRINK,
+			SHADER_MAX
+		};
+
+		struct PushConstant {
+			int32_t size[2];
+			int32_t stride;
+			int32_t shift;
+			int32_t base_size[2];
+			int32_t pad[2];
+		};
+
+		CanvasSdfShaderRD shader;
+		RID shader_version;
+		RID pipelines[SHADER_MAX];
+	} rt_sdf;
 
 	/* GLOBAL SHADER VARIABLES */
 
@@ -1930,6 +1967,12 @@ public:
 	virtual void render_target_disable_clear_request(RID p_render_target);
 	virtual void render_target_do_clear_request(RID p_render_target);
 
+	virtual void render_target_set_sdf_size_and_scale(RID p_render_target, RS::ViewportSDFOversize p_size, RS::ViewportSDFScale p_scale);
+	RID render_target_get_sdf_texture(RID p_render_target);
+	RID render_target_get_sdf_framebuffer(RID p_render_target);
+	void render_target_sdf_process(RID p_render_target);
+	virtual Rect2i render_target_get_sdf_rect(RID p_render_target) const;
+
 	Size2 render_target_get_size(RID p_render_target);
 	RID render_target_get_rd_framebuffer(RID p_render_target);
 	RID render_target_get_rd_texture(RID p_render_target);

servers/rendering/rasterizer_rd/shader_compiler_rd.cpp

@@ -1072,6 +1072,11 @@ String ShaderCompilerRD::_dump_node_code(const SL::Node *p_node, int p_level, Ge
 					} else if (onode->op == SL::OP_CONSTRUCT) {
 						code += String(vnode->name);
 					} else {
+						if (p_actions.usage_flag_pointers.has(vnode->name) && !used_flag_pointers.has(vnode->name)) {
+							*p_actions.usage_flag_pointers[vnode->name] = true;
+							used_flag_pointers.insert(vnode->name);
+						}
+
 						if (internal_functions.has(vnode->name)) {
 							code += vnode->name;
 							is_texture_func = texture_functions.has(vnode->name);

servers/rendering/rasterizer_rd/shaders/SCsub

@@ -5,6 +5,7 @@ Import("env")
 if "RD_GLSL" in env["BUILDERS"]:
     env.RD_GLSL("canvas.glsl")
     env.RD_GLSL("canvas_occlusion.glsl")
+    env.RD_GLSL("canvas_sdf.glsl")
     env.RD_GLSL("copy.glsl")
     env.RD_GLSL("copy_to_fb.glsl")
     env.RD_GLSL("cubemap_roughness.glsl")

servers/rendering/rasterizer_rd/shaders/canvas.glsl

@@ -233,6 +233,30 @@ MATERIAL_UNIFORMS
 } material;
 #endif
 
+vec2 screen_uv_to_sdf(vec2 p_uv) {
+	return canvas_data.screen_to_sdf * p_uv;
+}
+
+float texture_sdf(vec2 p_sdf) {
+	vec2 uv = p_sdf * canvas_data.sdf_to_tex.xy + canvas_data.sdf_to_tex.zw;
+	float d = texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv).r;
+	d = d * SDF_MAX_LENGTH - 1.0;
+	return d * canvas_data.tex_to_sdf;
+}
+
+vec2 texture_sdf_normal(vec2 p_sdf) {
+	vec2 uv = p_sdf * canvas_data.sdf_to_tex.xy + canvas_data.sdf_to_tex.zw;
+
+	const float EPSILON = 0.001;
+	return normalize(vec2(
+			texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv + vec2(EPSILON, 0.0)).r - texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv - vec2(EPSILON, 0.0)).r,
+			texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv + vec2(0.0, EPSILON)).r - texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv - vec2(0.0, EPSILON)).r));
+}
+
+vec2 sdf_to_screen_uv(vec2 p_sdf) {
+	return p_sdf * canvas_data.sdf_to_screen;
+}
+
 /* clang-format off */
 FRAGMENT_SHADER_GLOBALS
 /* clang-format on */
@@ -500,8 +524,13 @@ FRAGMENT_SHADER_CODE
 		color = vec4(0.0); //invisible by default due to using light mask
 	}
 
+#ifdef MODE_LIGHT_ONLY
+	color = vec4(0.0);
+#else
 	color *= canvas_data.canvas_modulation;
-#ifdef USE_LIGHTING
+#endif
+
+#if defined(USE_LIGHTING) && !defined(MODE_UNSHADED)
 
 	// Directional Lights
 

servers/rendering/rasterizer_rd/shaders/canvas_occlusion.glsl

@@ -2,6 +2,8 @@
 
 #version 450
 
+VERSION_DEFINES
+
 layout(location = 0) in highp vec3 vertex;
 
 layout(push_constant, binding = 0, std430) uniform Constants {
@@ -13,12 +15,16 @@ layout(push_constant, binding = 0, std430) uniform Constants {
 }
 constants;
 
+#ifdef MODE_SHADOW
 layout(location = 0) out highp float depth;
+#endif
 
 void main() {
 	highp vec4 vtx = vec4(vertex, 1.0) * mat4(constants.modelview[0], constants.modelview[1], vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0));
-	depth = dot(constants.direction, vtx.xy);
 
+#ifdef MODE_SHADOW
+	depth = dot(constants.direction, vtx.xy);
+#endif
 	gl_Position = constants.projection * vtx;
 }
 
@@ -26,6 +32,8 @@ void main() {
 
 #version 450
 
+VERSION_DEFINES
+
 layout(push_constant, binding = 0, std430) uniform Constants {
 	mat4 projection;
 	mat2x4 modelview;
@@ -35,9 +43,17 @@ layout(push_constant, binding = 0, std430) uniform Constants {
 }
 constants;
 
+#ifdef MODE_SHADOW
 layout(location = 0) in highp float depth;
 layout(location = 0) out highp float distance_buf;
+#else
+layout(location = 0) out highp float sdf_buf;
+#endif
 
 void main() {
+#ifdef MODE_SHADOW
 	distance_buf = depth / constants.z_far;
+#else
+	sdf_buf = 1.0;
+#endif
 }

servers/rendering/rasterizer_rd/shaders/canvas_sdf.glsl

@@ -0,0 +1,135 @@
+#[compute]
+
+#version 450
+
+VERSION_DEFINES
+
+layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in;
+
+layout(r8, set = 0, binding = 1) uniform restrict readonly image2D src_pixels;
+layout(r16, set = 0, binding = 2) uniform restrict writeonly image2D dst_sdf;
+
+layout(rg16i, set = 0, binding = 3) uniform restrict readonly iimage2D src_process;
+layout(rg16i, set = 0, binding = 4) uniform restrict writeonly iimage2D dst_process;
+
+layout(push_constant, binding = 0, std430) uniform Params {
+	ivec2 size;
+	int stride;
+	int shift;
+	ivec2 base_size;
+	uvec2 pad;
+}
+params;
+
+#define SDF_MAX_LENGTH 16384.0
+
+void main() {
+	ivec2 pos = ivec2(gl_GlobalInvocationID.xy);
+	if (any(greaterThanEqual(pos, params.size))) { //too large, do nothing
+		return;
+	}
+
+#ifdef MODE_LOAD
+
+	bool solid = imageLoad(src_pixels, pos).r > 0.5;
+	imageStore(dst_process, pos, solid ? ivec4(pos, 0, 0) : ivec4(ivec2(32767), 0, 0));
+#endif
+
+#ifdef MODE_LOAD_SHRINK
+
+	int s = 1 << params.shift;
+	ivec2 base = pos << params.shift;
+	ivec2 center = base + ivec2(params.shift);
+
+	ivec2 rel = ivec2(32767);
+	float d = 1e20;
+	for (int i = 0; i < s; i++) {
+		for (int j = 0; j < s; j++) {
+			ivec2 src_pos = base + ivec2(i, j);
+			if (any(greaterThanEqual(src_pos, params.base_size))) {
+				continue;
+			}
+			bool solid = imageLoad(src_pixels, src_pos).r > 0.5;
+			if (solid) {
+				float dist = length(vec2(src_pos - center));
+				if (dist < d) {
+					d = dist;
+					rel = src_pos;
+				}
+			}
+		}
+	}
+
+	imageStore(dst_process, pos, ivec4(rel, 0, 0));
+#endif
+
+#ifdef MODE_PROCESS
+
+	ivec2 base = pos << params.shift;
+	ivec2 center = base + ivec2(params.shift);
+
+	ivec2 rel = imageLoad(src_process, pos).xy;
+
+	if (center != rel) {
+		//only process if it does not point to itself
+		const int ofs_table_size = 8;
+		const ivec2 ofs_table[ofs_table_size] = ivec2[](
+				ivec2(-1, -1),
+				ivec2(0, -1),
+				ivec2(+1, -1),
+
+				ivec2(-1, 0),
+				ivec2(+1, 0),
+
+				ivec2(-1, +1),
+				ivec2(0, +1),
+				ivec2(+1, +1));
+
+		float dist = length(vec2(rel - center));
+		for (int i = 0; i < ofs_table_size; i++) {
+			ivec2 src_pos = pos + ofs_table[i] * params.stride;
+			if (any(lessThan(src_pos, ivec2(0))) || any(greaterThanEqual(src_pos, params.size))) {
+				continue;
+			}
+			ivec2 src_rel = imageLoad(src_process, src_pos).xy;
+			float src_dist = length(vec2(src_rel - center));
+			if (src_dist < dist) {
+				dist = src_dist;
+				rel = src_rel;
+			}
+		}
+	}
+
+	imageStore(dst_process, pos, ivec4(rel, 0, 0));
+#endif
+
+#ifdef MODE_STORE
+
+	ivec2 rel = imageLoad(src_process, pos).xy;
+	float d = length(vec2(rel - pos));
+	if (d > 0.01) {
+		d += 1.0; //make it signed
+	}
+	d /= SDF_MAX_LENGTH;
+	d = clamp(d, 0.0, 1.0);
+	imageStore(dst_sdf, pos, vec4(d));
+
+#endif
+
+#ifdef MODE_STORE_SHRINK
+
+	ivec2 base = pos << params.shift;
+	ivec2 center = base + ivec2(params.shift);
+
+	ivec2 rel = imageLoad(src_process, pos).xy;
+	float d = length(vec2(rel - center));
+
+	if (d > 0.01) {
+		d += 1.0; //make it signed
+	}
+	d /= SDF_MAX_LENGTH;
+	d = clamp(d, 0.0, 1.0);
+	imageStore(dst_sdf, pos, vec4(d));
+
+#endif
+}

servers/rendering/rasterizer_rd/shaders/canvas_uniforms_inc.glsl

@@ -3,6 +3,8 @@
 
 #define M_PI 3.14159265359
 
+#define SDF_MAX_LENGTH 16384.0
+
 #define FLAGS_INSTANCING_STRIDE_MASK 0xF
 #define FLAGS_INSTANCING_ENABLED (1 << 4)
 #define FLAGS_INSTANCING_HAS_COLORS (1 << 5)
@@ -24,6 +26,19 @@
 #define FLAGS_DEFAULT_NORMAL_MAP_USED (1 << 26)
 #define FLAGS_DEFAULT_SPECULAR_MAP_USED (1 << 27)
 
+#define SAMPLER_NEAREST_CLAMP 0
+#define SAMPLER_LINEAR_CLAMP 1
+#define SAMPLER_NEAREST_WITH_MIPMAPS_CLAMP 2
+#define SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP 3
+#define SAMPLER_NEAREST_WITH_MIPMAPS_ANISOTROPIC_CLAMP 4
+#define SAMPLER_LINEAR_WITH_MIPMAPS_ANISOTROPIC_CLAMP 5
+#define SAMPLER_NEAREST_REPEAT 6
+#define SAMPLER_LINEAR_REPEAT 7
+#define SAMPLER_NEAREST_WITH_MIPMAPS_REPEAT 8
+#define SAMPLER_LINEAR_WITH_MIPMAPS_REPEAT 9
+#define SAMPLER_NEAREST_WITH_MIPMAPS_ANISOTROPIC_REPEAT 10
+#define SAMPLER_LINEAR_WITH_MIPMAPS_ANISOTROPIC_REPEAT 11
+
 // Push Constant
 
 layout(push_constant, binding = 0, std430) uniform DrawData {
@@ -68,8 +83,12 @@ layout(set = 0, binding = 1, std140) uniform CanvasData {
 	float time;
 	bool use_pixel_snap;
 
+	vec4 sdf_to_tex;
+	vec2 screen_to_sdf;
+	vec2 sdf_to_screen;
+
 	uint directional_light_count;
-	uint pad0;
+	float tex_to_sdf;
 	uint pad1;
 	uint pad2;
 }
@@ -115,10 +134,11 @@ layout(set = 0, binding = 4) uniform texture2D shadow_atlas_texture;
 layout(set = 0, binding = 5) uniform sampler shadow_sampler;
 
 layout(set = 0, binding = 6) uniform texture2D screen_texture;
+layout(set = 0, binding = 7) uniform texture2D sdf_texture;
 
-layout(set = 0, binding = 7) uniform sampler material_samplers[12];
+layout(set = 0, binding = 8) uniform sampler material_samplers[12];
 
-layout(set = 0, binding = 8, std430) restrict readonly buffer GlobalVariableData {
+layout(set = 0, binding = 9, std430) restrict readonly buffer GlobalVariableData {
 	vec4 data[];
 }
 global_variables;

servers/rendering/rendering_server_canvas.cpp

@@ -68,7 +68,11 @@ void RenderingServerCanvas::_render_canvas_item_tree(RID p_to_render_target, Can
 
 	RENDER_TIMESTAMP("Render Canvas Items");
 
-	RSG::canvas_render->canvas_render_items(p_to_render_target, list, p_modulate, p_lights, p_directional_lights, p_transform, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel);
+	bool sdf_flag;
+	RSG::canvas_render->canvas_render_items(p_to_render_target, list, p_modulate, p_lights, p_directional_lights, p_transform, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel, sdf_flag);
+	if (sdf_flag) {
+		sdf_used = true;
+	}
 }
 
 void _collect_ysort_children(RenderingServerCanvas::Item *p_canvas_item, Transform2D p_transform, RenderingServerCanvas::Item *p_material_owner, RenderingServerCanvas::Item **r_items, int &r_index) {
@@ -301,6 +305,7 @@ void RenderingServerCanvas::_cull_canvas_item(Item *p_canvas_item, const Transfo
 void RenderingServerCanvas::render_canvas(RID p_render_target, Canvas *p_canvas, const Transform2D &p_transform, RasterizerCanvas::Light *p_lights, RasterizerCanvas::Light *p_directional_lights, const Rect2 &p_clip_rect, RenderingServer::CanvasItemTextureFilter p_default_filter, RenderingServer::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_transforms_to_pixel, bool p_snap_2d_vertices_to_pixel) {
 	RENDER_TIMESTAMP(">Render Canvas");
 
+	sdf_used = false;
 	snapping_2d_transforms_to_pixel = p_snap_2d_transforms_to_pixel;
 
 	if (p_canvas->children_order_dirty) {
@@ -347,6 +352,10 @@ void RenderingServerCanvas::render_canvas(RID p_render_target, Canvas *p_canvas,
 	RENDER_TIMESTAMP("<End Render Canvas");
 }
 
+bool RenderingServerCanvas::was_sdf_used() {
+	return sdf_used;
+}
+
 RID RenderingServerCanvas::canvas_create() {
 	Canvas *canvas = memnew(Canvas);
 	ERR_FAIL_COND_V(!canvas, RID());
@@ -1266,6 +1275,11 @@ void RenderingServerCanvas::canvas_light_occluder_set_polygon(RID p_occluder, RI
 	}
 }
 
+void RenderingServerCanvas::canvas_light_occluder_set_as_sdf_collision(RID p_occluder, bool p_enable) {
+	RasterizerCanvas::LightOccluderInstance *occluder = canvas_light_occluder_owner.getornull(p_occluder);
+	ERR_FAIL_COND(!occluder);
+}
+
 void RenderingServerCanvas::canvas_light_occluder_set_transform(RID p_occluder, const Transform2D &p_xform) {
 	RasterizerCanvas::LightOccluderInstance *occluder = canvas_light_occluder_owner.getornull(p_occluder);
 	ERR_FAIL_COND(!occluder);
@@ -1287,53 +1301,24 @@ RID RenderingServerCanvas::canvas_occluder_polygon_create() {
 }
 
 void RenderingServerCanvas::canvas_occluder_polygon_set_shape(RID p_occluder_polygon, const Vector<Vector2> &p_shape, bool p_closed) {
-	if (p_shape.size() < 3) {
-		canvas_occluder_polygon_set_shape_as_lines(p_occluder_polygon, p_shape);
-		return;
-	}
-
-	Vector<Vector2> lines;
-	int lc = p_shape.size() * 2;
-
-	lines.resize(lc - (p_closed ? 0 : 2));
-	{
-		Vector2 *w = lines.ptrw();
-		const Vector2 *r = p_shape.ptr();
-
-		int max = lc / 2;
-		if (!p_closed) {
-			max--;
-		}
-		for (int i = 0; i < max; i++) {
-			Vector2 a = r[i];
-			Vector2 b = r[(i + 1) % (lc / 2)];
-			w[i * 2 + 0] = a;
-			w[i * 2 + 1] = b;
-		}
-	}
-
-	canvas_occluder_polygon_set_shape_as_lines(p_occluder_polygon, lines);
-}
-
-void RenderingServerCanvas::canvas_occluder_polygon_set_shape_as_lines(RID p_occluder_polygon, const Vector<Vector2> &p_shape) {
 	LightOccluderPolygon *occluder_poly = canvas_light_occluder_polygon_owner.getornull(p_occluder_polygon);
 	ERR_FAIL_COND(!occluder_poly);
-	ERR_FAIL_COND(p_shape.size() & 1);
 
-	int lc = p_shape.size();
+	uint32_t pc = p_shape.size();
+	ERR_FAIL_COND(pc < 2);
+
 	occluder_poly->aabb = Rect2();
-	{
-		const Vector2 *r = p_shape.ptr();
-		for (int i = 0; i < lc; i++) {
-			if (i == 0) {
-				occluder_poly->aabb.position = r[i];
-			} else {
-				occluder_poly->aabb.expand_to(r[i]);
-			}
+	const Vector2 *r = p_shape.ptr();
+	for (uint32_t i = 0; i < pc; i++) {
+		if (i == 0) {
+			occluder_poly->aabb.position = r[i];
+		} else {
+			occluder_poly->aabb.expand_to(r[i]);
 		}
 	}
 
-	RSG::canvas_render->occluder_polygon_set_shape_as_lines(occluder_poly->occluder, p_shape);
+	RSG::canvas_render->occluder_polygon_set_shape(occluder_poly->occluder, p_shape, p_closed);
+
 	for (Set<RasterizerCanvas::LightOccluderInstance *>::Element *E = occluder_poly->owners.front(); E; E = E->next()) {
 		E->get()->aabb_cache = occluder_poly->aabb;
 	}

servers/rendering/rendering_server_canvas.h

@@ -153,6 +153,7 @@ public:
 	RID_PtrOwner<RasterizerCanvas::Light> canvas_light_owner;
 
 	bool disable_scale;
+	bool sdf_used = false;
 	bool snapping_2d_transforms_to_pixel = false;
 
 private:
@@ -165,6 +166,8 @@ private:
 public:
 	void render_canvas(RID p_render_target, Canvas *p_canvas, const Transform2D &p_transform, RasterizerCanvas::Light *p_lights, RasterizerCanvas::Light *p_directional_lights, const Rect2 &p_clip_rect, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_transforms_to_pixel, bool p_snap_2d_vertices_to_pixel);
 
+	bool was_sdf_used();
+
 	RID canvas_create();
 	void canvas_set_item_mirroring(RID p_canvas, RID p_item, const Point2 &p_mirroring);
 	void canvas_set_modulate(RID p_canvas, const Color &p_color);
@@ -247,12 +250,12 @@ public:
 	void canvas_light_occluder_attach_to_canvas(RID p_occluder, RID p_canvas);
 	void canvas_light_occluder_set_enabled(RID p_occluder, bool p_enabled);
 	void canvas_light_occluder_set_polygon(RID p_occluder, RID p_polygon);
+	void canvas_light_occluder_set_as_sdf_collision(RID p_occluder, bool p_enable);
 	void canvas_light_occluder_set_transform(RID p_occluder, const Transform2D &p_xform);
 	void canvas_light_occluder_set_light_mask(RID p_occluder, int p_mask);
 
 	RID canvas_occluder_polygon_create();
 	void canvas_occluder_polygon_set_shape(RID p_occluder_polygon, const Vector<Vector2> &p_shape, bool p_closed);
-	void canvas_occluder_polygon_set_shape_as_lines(RID p_occluder_polygon, const Vector<Vector2> &p_shape);
 
 	void canvas_occluder_polygon_set_cull_mode(RID p_occluder_polygon, RS::CanvasOccluderPolygonCullMode p_mode);
 

servers/rendering/rendering_server_raster.h

@@ -536,6 +536,7 @@ public:
 	BIND2(viewport_set_global_canvas_transform, RID, const Transform2D &)
 	BIND4(viewport_set_canvas_stacking, RID, RID, int, int)
 	BIND2(viewport_set_shadow_atlas_size, RID, int)
+	BIND3(viewport_set_sdf_oversize_and_scale, RID, ViewportSDFOversize, ViewportSDFScale)
 	BIND3(viewport_set_shadow_atlas_quadrant_subdivision, RID, int, int)
 	BIND2(viewport_set_msaa, RID, ViewportMSAA)
 	BIND2(viewport_set_screen_space_aa, RID, ViewportScreenSpaceAA)
@@ -776,12 +777,12 @@ public:
 	BIND2(canvas_light_occluder_attach_to_canvas, RID, RID)
 	BIND2(canvas_light_occluder_set_enabled, RID, bool)
 	BIND2(canvas_light_occluder_set_polygon, RID, RID)
+	BIND2(canvas_light_occluder_set_as_sdf_collision, RID, bool)
 	BIND2(canvas_light_occluder_set_transform, RID, const Transform2D &)
 	BIND2(canvas_light_occluder_set_light_mask, RID, int)
 
 	BIND0R(RID, canvas_occluder_polygon_create)
 	BIND3(canvas_occluder_polygon_set_shape, RID, const Vector<Vector2> &, bool)
-	BIND2(canvas_occluder_polygon_set_shape_as_lines, RID, const Vector<Vector2> &)
 
 	BIND2(canvas_occluder_polygon_set_cull_mode, RID, CanvasOccluderPolygonCullMode)
 

servers/rendering/rendering_server_viewport.cpp

@@ -146,6 +146,36 @@ void RenderingServerViewport::_draw_viewport(Viewport *p_viewport, XRInterface::
 		RasterizerCanvas::Light *directional_lights = nullptr;
 		RasterizerCanvas::Light *directional_lights_with_shadow = nullptr;
 
+		if (p_viewport->sdf_active) {
+			//process SDF
+
+			Rect2 sdf_rect = RSG::storage->render_target_get_sdf_rect(p_viewport->render_target);
+
+			RasterizerCanvas::LightOccluderInstance *occluders = nullptr;
+
+			//make list of occluders
+			for (Map<RID, Viewport::CanvasData>::Element *E = p_viewport->canvas_map.front(); E; E = E->next()) {
+				RenderingServerCanvas::Canvas *canvas = static_cast<RenderingServerCanvas::Canvas *>(E->get().canvas);
+				Transform2D xf = _canvas_get_transform(p_viewport, canvas, &E->get(), clip_rect.size);
+
+				for (Set<RasterizerCanvas::LightOccluderInstance *>::Element *F = canvas->occluders.front(); F; F = F->next()) {
+					if (!F->get()->enabled) {
+						continue;
+					}
+					F->get()->xform_cache = xf * F->get()->xform;
+
+					if (sdf_rect.intersects_transformed(F->get()->xform_cache, F->get()->aabb_cache)) {
+						F->get()->next = occluders;
+						occluders = F->get();
+					}
+				}
+			}
+
+			RSG::canvas_render->render_sdf(p_viewport->render_target, occluders);
+
+			p_viewport->sdf_active = false; // if used, gets set active again
+		}
+
 		Rect2 shadow_rect;
 
 		int light_count = 0;
@@ -195,7 +225,6 @@ void RenderingServerViewport::_draw_viewport(Viewport *p_viewport, XRInterface::
 					}
 
 					//guess this is not needed, but keeping because it may be
-					//RSG::canvas_render->light_internal_update(cl->light_internal, cl);
 				}
 			}
 
@@ -256,7 +285,6 @@ void RenderingServerViewport::_draw_viewport(Viewport *p_viewport, XRInterface::
 				light = light->shadows_next_ptr;
 			}
 
-			//RSG::canvas_render->reset_canvas();
 			RENDER_TIMESTAMP("<End rendering 2D Shadows");
 		}
 
@@ -340,7 +368,6 @@ void RenderingServerViewport::_draw_viewport(Viewport *p_viewport, XRInterface::
 				light = light->shadows_next_ptr;
 			}
 
-			//RSG::canvas_render->reset_canvas();
 			RENDER_TIMESTAMP("<Render Directional 2D Shadows");
 		}
 
@@ -380,6 +407,9 @@ void RenderingServerViewport::_draw_viewport(Viewport *p_viewport, XRInterface::
 			}
 
 			RSG::canvas->render_canvas(p_viewport->render_target, canvas, xform, canvas_lights, canvas_directional_lights, clip_rect, p_viewport->texture_filter, p_viewport->texture_repeat, p_viewport->snap_2d_transforms_to_pixel, p_viewport->snap_2d_vertices_to_pixel);
+			if (RSG::canvas->was_sdf_used()) {
+				p_viewport->sdf_active = true;
+			}
 			i++;
 
 			if (scenario_draw_canvas_bg && E->key().get_layer() >= scenario_canvas_max_layer) {
@@ -400,8 +430,6 @@ void RenderingServerViewport::_draw_viewport(Viewport *p_viewport, XRInterface::
 				_draw_3d(p_viewport, p_eye);
 			}
 		}
-
-		//RSG::canvas_render->canvas_debug_viewport_shadows(lights_with_shadow);
 	}
 
 	if (RSG::storage->render_target_is_clear_requested(p_viewport->render_target)) {
@@ -925,6 +953,13 @@ void RenderingServerViewport::viewport_set_default_canvas_item_texture_repeat(RI
 	viewport->texture_repeat = p_repeat;
 }
 
+void RenderingServerViewport::viewport_set_sdf_oversize_and_scale(RID p_viewport, RS::ViewportSDFOversize p_size, RS::ViewportSDFScale p_scale) {
+	Viewport *viewport = viewport_owner.getornull(p_viewport);
+	ERR_FAIL_COND(!viewport);
+
+	RSG::storage->render_target_set_sdf_size_and_scale(viewport->render_target, p_size, p_scale);
+}
+
 bool RenderingServerViewport::free(RID p_rid) {
 	if (viewport_owner.owns(p_rid)) {
 		Viewport *viewport = viewport_owner.getornull(p_rid);

servers/rendering/rendering_server_viewport.h

@@ -82,6 +82,8 @@ public:
 		RID shadow_atlas;
 		int shadow_atlas_size;
 
+		bool sdf_active;
+
 		uint64_t last_pass = 0;
 
 		int render_info[RS::VIEWPORT_RENDER_INFO_MAX];
@@ -146,6 +148,7 @@ public:
 				render_info[i] = 0;
 			}
 			use_xr = false;
+			sdf_active = false;
 
 			time_cpu_begin = 0;
 			time_cpu_end = 0;
@@ -232,6 +235,8 @@ public:
 	void viewport_set_default_canvas_item_texture_filter(RID p_viewport, RS::CanvasItemTextureFilter p_filter);
 	void viewport_set_default_canvas_item_texture_repeat(RID p_viewport, RS::CanvasItemTextureRepeat p_repeat);
 
+	void viewport_set_sdf_oversize_and_scale(RID p_viewport, RS::ViewportSDFOversize p_over_size, RS::ViewportSDFScale p_scale);
+
 	void handle_timestamp(String p_timestamp, uint64_t p_cpu_time, uint64_t p_gpu_time);
 
 	void set_default_clear_color(const Color &p_color);

servers/rendering/rendering_server_wrap_mt.h

@@ -440,6 +440,8 @@ public:
 	FUNC2(viewport_set_global_canvas_transform, RID, const Transform2D &)
 	FUNC4(viewport_set_canvas_stacking, RID, RID, int, int)
 	FUNC2(viewport_set_shadow_atlas_size, RID, int)
+	FUNC3(viewport_set_sdf_oversize_and_scale, RID, ViewportSDFOversize, ViewportSDFScale)
+
 	FUNC3(viewport_set_shadow_atlas_quadrant_subdivision, RID, int, int)
 	FUNC2(viewport_set_msaa, RID, ViewportMSAA)
 	FUNC2(viewport_set_screen_space_aa, RID, ViewportScreenSpaceAA)
@@ -676,12 +678,12 @@ public:
 	FUNC2(canvas_light_occluder_attach_to_canvas, RID, RID)
 	FUNC2(canvas_light_occluder_set_enabled, RID, bool)
 	FUNC2(canvas_light_occluder_set_polygon, RID, RID)
+	FUNC2(canvas_light_occluder_set_as_sdf_collision, RID, bool)
 	FUNC2(canvas_light_occluder_set_transform, RID, const Transform2D &)
 	FUNC2(canvas_light_occluder_set_light_mask, RID, int)
 
 	FUNCRID(canvas_occluder_polygon)
 	FUNC3(canvas_occluder_polygon_set_shape, RID, const Vector<Vector2> &, bool)
-	FUNC2(canvas_occluder_polygon_set_shape_as_lines, RID, const Vector<Vector2> &)
 
 	FUNC2(canvas_occluder_polygon_set_cull_mode, RID, CanvasOccluderPolygonCullMode)
 

servers/rendering/shader_types.cpp

@@ -252,6 +252,27 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_CANVAS_ITEM].functions["fragment"].built_ins["SCREEN_TEXTURE"] = constt(ShaderLanguage::TYPE_SAMPLER2D);
 	shader_modes[RS::SHADER_CANVAS_ITEM].functions["fragment"].can_discard = true;
 
+	{
+		ShaderLanguage::StageFunctionInfo func;
+		func.arguments.push_back(ShaderLanguage::StageFunctionInfo::Argument("sdf_pos", ShaderLanguage::TYPE_VEC2));
+		func.return_type = ShaderLanguage::TYPE_FLOAT; //whether it could emit
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["fragment"].stage_functions["texture_sdf"] = func;
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["light"].stage_functions["texture_sdf"] = func;
+		func.return_type = ShaderLanguage::TYPE_VEC2; //whether it could emit
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["fragment"].stage_functions["sdf_to_screen_uv"] = func;
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["light"].stage_functions["sdf_to_screen_uv"] = func;
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["fragment"].stage_functions["texture_sdf_normal"] = func;
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["light"].stage_functions["texture_sdf_normal"] = func;
+	}
+
+	{
+		ShaderLanguage::StageFunctionInfo func;
+		func.arguments.push_back(ShaderLanguage::StageFunctionInfo::Argument("uv", ShaderLanguage::TYPE_VEC2));
+		func.return_type = ShaderLanguage::TYPE_VEC2; //whether it could emit
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["fragment"].stage_functions["screen_uv_to_sdf"] = func;
+		shader_modes[RS::SHADER_CANVAS_ITEM].functions["light"].stage_functions["screen_uv_to_sdf"] = func;
+	}
+
 	shader_modes[RS::SHADER_CANVAS_ITEM].functions["light"].built_ins["FRAGCOORD"] = constt(ShaderLanguage::TYPE_VEC4);
 	shader_modes[RS::SHADER_CANVAS_ITEM].functions["light"].built_ins["NORMAL"] = constt(ShaderLanguage::TYPE_VEC3);
 	shader_modes[RS::SHADER_CANVAS_ITEM].functions["light"].built_ins["COLOR"] = constt(ShaderLanguage::TYPE_VEC4);

servers/rendering_server.cpp

@@ -1858,7 +1858,6 @@ void RenderingServer::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("canvas_occluder_polygon_create"), &RenderingServer::canvas_occluder_polygon_create);
 	ClassDB::bind_method(D_METHOD("canvas_occluder_polygon_set_shape", "occluder_polygon", "shape", "closed"), &RenderingServer::canvas_occluder_polygon_set_shape);
-	ClassDB::bind_method(D_METHOD("canvas_occluder_polygon_set_shape_as_lines", "occluder_polygon", "shape"), &RenderingServer::canvas_occluder_polygon_set_shape_as_lines);
 	ClassDB::bind_method(D_METHOD("canvas_occluder_polygon_set_cull_mode", "occluder_polygon", "mode"), &RenderingServer::canvas_occluder_polygon_set_cull_mode);
 
 	ClassDB::bind_method(D_METHOD("global_variable_add", "name", "type", "default_value"), &RenderingServer::global_variable_add);

servers/rendering_server.h

@@ -730,6 +730,23 @@ public:
 	virtual void viewport_set_global_canvas_transform(RID p_viewport, const Transform2D &p_transform) = 0;
 	virtual void viewport_set_canvas_stacking(RID p_viewport, RID p_canvas, int p_layer, int p_sublayer) = 0;
 
+	enum ViewportSDFOversize {
+		VIEWPORT_SDF_OVERSIZE_100_PERCENT,
+		VIEWPORT_SDF_OVERSIZE_120_PERCENT,
+		VIEWPORT_SDF_OVERSIZE_150_PERCENT,
+		VIEWPORT_SDF_OVERSIZE_200_PERCENT,
+		VIEWPORT_SDF_OVERSIZE_MAX
+	};
+
+	enum ViewportSDFScale {
+		VIEWPORT_SDF_SCALE_100_PERCENT,
+		VIEWPORT_SDF_SCALE_50_PERCENT,
+		VIEWPORT_SDF_SCALE_25_PERCENT,
+		VIEWPORT_SDF_SCALE_MAX
+	};
+
+	virtual void viewport_set_sdf_oversize_and_scale(RID p_viewport, ViewportSDFOversize p_oversize, ViewportSDFScale p_scale) = 0;
+
 	virtual void viewport_set_shadow_atlas_size(RID p_viewport, int p_size) = 0;
 	virtual void viewport_set_shadow_atlas_quadrant_subdivision(RID p_viewport, int p_quadrant, int p_subdiv) = 0;
 
@@ -1245,12 +1262,12 @@ public:
 	virtual void canvas_light_occluder_attach_to_canvas(RID p_occluder, RID p_canvas) = 0;
 	virtual void canvas_light_occluder_set_enabled(RID p_occluder, bool p_enabled) = 0;
 	virtual void canvas_light_occluder_set_polygon(RID p_occluder, RID p_polygon) = 0;
+	virtual void canvas_light_occluder_set_as_sdf_collision(RID p_occluder, bool p_enable) = 0;
 	virtual void canvas_light_occluder_set_transform(RID p_occluder, const Transform2D &p_xform) = 0;
 	virtual void canvas_light_occluder_set_light_mask(RID p_occluder, int p_mask) = 0;
 
 	virtual RID canvas_occluder_polygon_create() = 0;
 	virtual void canvas_occluder_polygon_set_shape(RID p_occluder_polygon, const Vector<Vector2> &p_shape, bool p_closed) = 0;
-	virtual void canvas_occluder_polygon_set_shape_as_lines(RID p_occluder_polygon, const Vector<Vector2> &p_shape) = 0;
 
 	enum CanvasOccluderPolygonCullMode {
 		CANVAS_OCCLUDER_POLYGON_CULL_DISABLED,