Color Ramp and Curve Map added to visual shader editing.

Added Color Ramp and Curve Map to shader nodes.
Fixed an issue that crashed Godot Editor right when opened.

5 files changed, 906 insertions, 3 deletions

diff --git a/tools/editor/icons/icon_graph_color_ramp.png b/tools/editor/icons/icon_graph_color_ramp.png
new file mode 100644
index 0000000000..9031b5ec53
--- /dev/null
+++ b/tools/editor/icons/icon_graph_color_ramp.png
diff --git a/tools/editor/icons/icon_graph_curve_map.png b/tools/editor/icons/icon_graph_curve_map.png
new file mode 100644
index 0000000000..de5c32f09e
--- /dev/null
+++ b/tools/editor/icons/icon_graph_curve_map.png
diff --git a/tools/editor/icons/icon_graph_default_texture.png b/tools/editor/icons/icon_graph_default_texture.png
new file mode 100644
index 0000000000..da77ec9364
--- /dev/null
+++ b/tools/editor/icons/icon_graph_default_texture.png
diff --git a/tools/editor/plugins/shader_graph_editor_plugin.cpp b/tools/editor/plugins/shader_graph_editor_plugin.cpp
index 0a206c4a45..39508464c1 100644
--- a/tools/editor/plugins/shader_graph_editor_plugin.cpp
+++ b/tools/editor/plugins/shader_graph_editor_plugin.cpp
@@ -32,6 +32,642 @@
 #include "scene/gui/menu_button.h"
 #include "scene/gui/panel.h"
 #include "spatial_editor_plugin.h"
+#include "os/keyboard.h"
+
+
+void GraphColorRampEdit::_input_event(const InputEvent& p_event) {
+
+	if (p_event.type==InputEvent::KEY && p_event.key.pressed && p_event.key.scancode==KEY_DELETE && grabbed!=-1) {
+
+		points.remove(grabbed);
+		grabbed=-1;
+		update();
+		emit_signal("ramp_changed");
+		accept_event();
+	}
+
+	if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && p_event.mouse_button.pressed) {
+
+		update();
+		int x = p_event.mouse_button.x;
+		int total_w = get_size().width-get_size().height-3;
+		if (x>total_w+3) {
+
+			if (grabbed==-1)
+				return;
+			Size2 ms = Size2(350, picker->get_combined_minimum_size().height+10);
+			picker->set_color(points[grabbed].color);
+			popup->set_pos(get_global_pos()-Size2(0,ms.height));
+			popup->set_size(ms);
+			popup->popup();
+			return;
+		}
+
+
+		float ofs = CLAMP(x/float(total_w),0,1);
+
+		grabbed=-1;
+		grabbing=true;
+		int pos=-1;
+		for(int i=0;i<points.size();i++) {
+
+			if (ABS(x-points[i].offset*total_w)<4) {
+				grabbed=i;
+			}
+			if (points[i].offset<ofs)
+				pos=i;
+		}
+
+		grabbed_at=ofs;
+		//grab or select
+		if (grabbed!=-1) {
+			return;
+		}
+		//insert
+
+
+		Point p;
+		p.offset=ofs;
+
+		Point prev;
+		Point next;
+
+		if (pos==-1) {
+
+			prev.color=Color(0,0,0);
+			prev.offset=0;
+			if (points.size()) {
+				next=points[0];
+			} else {
+				next.color=Color(1,1,1);
+				next.offset=1.0;
+			}
+		} else  {
+
+			if (pos==points.size()-1) {
+				next.color=Color(1,1,1);
+				next.offset=1.0;
+			} else {
+				next=points[pos+1];
+			}
+			prev=points[pos];
+
+		}
+
+		p.color=prev.color.linear_interpolate(next.color,(p.offset-prev.offset)/(next.offset-prev.offset));
+
+		points.push_back(p);
+		points.sort();
+		for(int i=0;i<points.size();i++) {
+			if (points[i].offset==ofs) {
+				grabbed=i;
+				break;
+			}
+		}
+
+		emit_signal("ramp_changed");
+
+	}
+
+	if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && !p_event.mouse_button.pressed) {
+
+		if (grabbing) {
+			grabbing=false;
+			emit_signal("ramp_changed");
+		}
+		update();
+	}
+
+	if (p_event.type==InputEvent::MOUSE_MOTION && grabbing) {
+
+		int total_w = get_size().width-get_size().height-3;
+
+		int x = p_event.mouse_motion.x;
+		float newofs = CLAMP(x/float(total_w),0,1);
+
+		bool valid=true;
+		for(int i=0;i<points.size();i++) {
+
+			if (points[i].offset==newofs && i!=grabbed) {
+				valid=false;
+			}
+		}
+
+		if (!valid)
+			return;
+
+		points[grabbed].offset=newofs;
+
+		points.sort();
+		for(int i=0;i<points.size();i++) {
+			if (points[i].offset==newofs) {
+				grabbed=i;
+				break;
+			}
+		}
+
+		emit_signal("ramp_changed");
+
+		update();
+	}
+}
+
+void GraphColorRampEdit::_notification(int p_what){
+
+	if (p_what==NOTIFICATION_ENTER_TREE) {
+		picker->connect("color_changed",this,"_color_changed");
+	}
+	if (p_what==NOTIFICATION_DRAW) {
+
+
+		Point prev;
+		prev.offset=0;
+		prev.color=Color(0,0,0);
+		int w = get_size().x;
+		int h = get_size().y;
+
+		int total_w = get_size().width-get_size().height-3;
+
+		for(int i=-1;i<points.size();i++) {
+
+			Point next;
+			if (i+1==points.size()) {
+				next.color=Color(1,1,1);
+				next.offset=1;
+			} else {
+				next=points[i+1];
+			}
+
+			if (prev.offset==next.offset) {
+				prev=next;
+				continue;
+			}
+
+			Vector<Vector2> points;
+			Vector<Color> colors;
+			points.push_back(Vector2(prev.offset*total_w,h));
+			points.push_back(Vector2(prev.offset*total_w,0));
+			points.push_back(Vector2(next.offset*total_w,0));
+			points.push_back(Vector2(next.offset*total_w,h));
+			colors.push_back(prev.color);
+			colors.push_back(prev.color);
+			colors.push_back(next.color);
+			colors.push_back(next.color);
+			draw_primitive(points,colors,Vector<Point2>());
+			prev=next;
+		}
+
+		for(int i=0;i<points.size();i++) {
+
+			Color col=i==grabbed?Color(1,0.0,0.0,0.9):Color(1,1,1,0.8);
+
+			draw_line(Vector2(points[i].offset*total_w,0),Vector2(points[i].offset*total_w,h-1),Color(0,0,0,0.7));
+			draw_line(Vector2(points[i].offset*total_w-1,h/2),Vector2(points[i].offset*total_w-1,h-1),col);
+			draw_line(Vector2(points[i].offset*total_w+1,h/2),Vector2(points[i].offset*total_w+1,h-1),col);
+			draw_line(Vector2(points[i].offset*total_w-1,h/2),Vector2(points[i].offset*total_w+1,h/2),col);
+			draw_line(Vector2(points[i].offset*total_w-1,h-1),Vector2(points[i].offset*total_w+1,h-1),col);
+
+		}
+
+		if (grabbed!=-1) {
+
+			draw_rect(Rect2(total_w+3,0,h,h),points[grabbed].color);
+		}
+
+		if (has_focus()) {
+
+			draw_line(Vector2(-1,-1),Vector2(total_w+1,-1),Color(1,1,1,0.6));
+			draw_line(Vector2(total_w+1,-1),Vector2(total_w+1,h+1),Color(1,1,1,0.6));
+			draw_line(Vector2(total_w+1,h+1),Vector2(-1,h+1),Color(1,1,1,0.6));
+			draw_line(Vector2(-1,-1),Vector2(-1,h+1),Color(1,1,1,0.6));
+		}
+
+	}
+}
+
+Size2 GraphColorRampEdit::get_minimum_size() const {
+
+	return Vector2(0,16);
+}
+
+
+void GraphColorRampEdit::_color_changed(const Color& p_color) {
+
+	if (grabbed==-1)
+		return;
+	points[grabbed].color=p_color;
+	update();
+	emit_signal("ramp_changed");
+
+}
+
+void GraphColorRampEdit::set_ramp(const Vector<float>& p_offsets,const Vector<Color>& p_colors) {
+
+	ERR_FAIL_COND(p_offsets.size()!=p_colors.size());
+	points.clear();
+	for(int i=0;i<p_offsets.size();i++) {
+		Point p;
+		p.offset=p_offsets[i];
+		p.color=p_colors[i];
+		points.push_back(p);
+	}
+
+	points.sort();
+	update();
+}
+
+Vector<float> GraphColorRampEdit::get_offsets() const{
+	Vector<float> ret;
+	for(int i=0;i<points.size();i++)
+		ret.push_back(points[i].offset);
+	return ret;
+}
+Vector<Color> GraphColorRampEdit::get_colors() const{
+
+	Vector<Color> ret;
+	for(int i=0;i<points.size();i++)
+		ret.push_back(points[i].color);
+	return ret;
+}
+
+
+void GraphColorRampEdit::_bind_methods(){
+
+	ObjectTypeDB::bind_method(_MD("_input_event"),&GraphColorRampEdit::_input_event);
+	ObjectTypeDB::bind_method(_MD("_color_changed"),&GraphColorRampEdit::_color_changed);
+	ADD_SIGNAL(MethodInfo("ramp_changed"));
+}
+
+GraphColorRampEdit::GraphColorRampEdit(){
+
+	grabbed=-1;
+	grabbing=false;
+	set_focus_mode(FOCUS_ALL);
+
+	popup = memnew( PopupPanel );
+	picker = memnew( ColorPicker );
+	popup->add_child(picker);
+	popup->set_child_rect(picker);
+	add_child(popup);
+
+}
+////////////
+
+void GraphCurveMapEdit::_input_event(const InputEvent& p_event) {
+
+	if (p_event.type==InputEvent::KEY && p_event.key.pressed && p_event.key.scancode==KEY_DELETE && grabbed!=-1) {
+
+		points.remove(grabbed);
+		grabbed=-1;
+		update();
+		emit_signal("curve_changed");
+		accept_event();
+	}
+
+	if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && p_event.mouse_button.pressed) {
+
+		update();
+		Point2 p = Vector2(p_event.mouse_button.x,p_event.mouse_button.y)/get_size();
+		p.y=1.0-p.y;
+		grabbed=-1;
+		grabbing=true;
+
+		for(int i=0;i<points.size();i++) {
+
+			Vector2 ps = p*get_size();
+			Vector2 pt = Vector2(points[i].offset,points[i].height)*get_size();
+			if (ps.distance_to(pt)<4) {
+				grabbed=i;
+			}
+
+		}
+
+
+		//grab or select
+		if (grabbed!=-1) {
+			return;
+		}
+		//insert
+
+
+		Point np;
+		np.offset=p.x;
+		np.height=p.y;
+
+		points.push_back(np);
+		points.sort();
+		for(int i=0;i<points.size();i++) {
+			if (points[i].offset==p.x && points[i].height==p.y) {
+				grabbed=i;
+				break;
+			}
+		}
+
+		emit_signal("curve_changed");
+
+	}
+
+	if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && !p_event.mouse_button.pressed) {
+
+		if (grabbing) {
+			grabbing=false;
+			emit_signal("curve_changed");
+		}
+		update();
+	}
+
+	if (p_event.type==InputEvent::MOUSE_MOTION && grabbing) {
+
+		Point2 p = Vector2(p_event.mouse_button.x,p_event.mouse_button.y)/get_size();
+		p.y=1.0-p.y;
+
+		p.x = CLAMP(p.x,0.0,1.0);
+		p.y = CLAMP(p.y,0.0,1.0);
+
+		bool valid=true;
+
+		for(int i=0;i<points.size();i++) {
+
+			if (points[i].offset==p.x && points[i].height==p.y && i!=grabbed) {
+				valid=false;
+			}
+		}
+
+		if (!valid)
+			return;
+
+		points[grabbed].offset=p.x;
+		points[grabbed].height=p.y;
+
+		points.sort();
+		for(int i=0;i<points.size();i++) {
+			if (points[i].offset==p.x && points[i].height==p.y) {
+				grabbed=i;
+				break;
+			}
+		}
+
+		emit_signal("curve_changed");
+
+		update();
+	}
+}
+
+void GraphCurveMapEdit::_plot_curve(const Vector2& p_a,const Vector2& p_b,const Vector2& p_c,const Vector2& p_d) {
+
+	float geometry[4][4];
+	float tmp1[4][4];
+	float tmp2[4][4];
+	float deltas[4][4];
+	double x, dx, dx2, dx3;
+	double y, dy, dy2, dy3;
+	double d, d2, d3;
+	int lastx, lasty;
+	int newx, newy;
+	int ntimes;
+	int i,j;
+
+	int xmax=get_size().x;
+	int ymax=get_size().y;
+
+	/* construct the geometry matrix from the segment */
+	for (i = 0; i < 4; i++)	{
+		geometry[i][2] = 0;
+		geometry[i][3] = 0;
+	}
+
+	geometry[0][0] = (p_a[0] * xmax);
+	geometry[1][0] = (p_b[0] * xmax);
+	geometry[2][0] = (p_c[0] * xmax);
+	geometry[3][0] = (p_d[0] * xmax);
+
+	geometry[0][1] = (p_a[1] * ymax);
+	geometry[1][1] = (p_b[1] * ymax);
+	geometry[2][1] = (p_c[1] * ymax);
+	geometry[3][1] = (p_d[1] * ymax);
+
+	/* subdivide the curve ntimes (1000) times */
+	ntimes = 4 * xmax;
+	/* ntimes can be adjusted to give a finer or coarser curve */
+	d = 1.0 / ntimes;
+	d2 = d * d;
+	d3 = d * d * d;
+
+	/* construct a temporary matrix for determining the forward differencing deltas */
+	tmp2[0][0] = 0;     tmp2[0][1] = 0;     tmp2[0][2] = 0;    tmp2[0][3] = 1;
+	tmp2[1][0] = d3;    tmp2[1][1] = d2;    tmp2[1][2] = d;    tmp2[1][3] = 0;
+	tmp2[2][0] = 6*d3;  tmp2[2][1] = 2*d2;  tmp2[2][2] = 0;    tmp2[2][3] = 0;
+	tmp2[3][0] = 6*d3;  tmp2[3][1] = 0;     tmp2[3][2] = 0;    tmp2[3][3] = 0;
+
+	/* compose the basis and geometry matrices */
+
+	static const float CR_basis[4][4] =
+	{
+	  { -0.5,  1.5, -1.5,  0.5 },
+	  {  1.0, -2.5,  2.0, -0.5 },
+	  { -0.5,  0.0,  0.5,  0.0 },
+	  {  0.0,  1.0,  0.0,  0.0 },
+	};
+
+	for (i = 0; i < 4; i++)
+	    {
+	      for (j = 0; j < 4; j++)
+		{
+		  tmp1[i][j] = (CR_basis[i][0] * geometry[0][j] +
+			      CR_basis[i][1] * geometry[1][j] +
+			      CR_basis[i][2] * geometry[2][j] +
+			      CR_basis[i][3] * geometry[3][j]);
+		}
+	    }
+	/* compose the above results to get the deltas matrix */
+
+	for (i = 0; i < 4; i++)
+	    {
+	      for (j = 0; j < 4; j++)
+		{
+		  deltas[i][j] = (tmp2[i][0] * tmp1[0][j] +
+			      tmp2[i][1] * tmp1[1][j] +
+			      tmp2[i][2] * tmp1[2][j] +
+			      tmp2[i][3] * tmp1[3][j]);
+		}
+	    }
+
+
+	/* extract the x deltas */
+	x = deltas[0][0];
+	dx = deltas[1][0];
+	dx2 = deltas[2][0];
+	dx3 = deltas[3][0];
+
+	/* extract the y deltas */
+	y = deltas[0][1];
+	dy = deltas[1][1];
+	dy2 = deltas[2][1];
+	dy3 = deltas[3][1];
+
+
+	lastx = CLAMP (x, 0, xmax);
+	lasty = CLAMP (y, 0, ymax);
+
+/*	if (fix255)
+	{
+		cd->curve[cd->outline][lastx] = lasty;
+	}
+	else
+	{
+		cd->curve_ptr[cd->outline][lastx] = lasty;
+		if(gb_debug) printf("bender_plot_curve xmax:%d ymax:%d\n", (int)xmax, (int)ymax);
+	}
+*/
+	/* loop over the curve */
+	for (i = 0; i < ntimes; i++)
+	{
+		/* increment the x values */
+		x += dx;
+		dx += dx2;
+		dx2 += dx3;
+
+		/* increment the y values */
+		y += dy;
+		dy += dy2;
+		dy2 += dy3;
+
+		newx = CLAMP ((Math::round (x)), 0, xmax);
+		newy = CLAMP ((Math::round (y)), 0, ymax);
+
+		/* if this point is different than the last one...then draw it */
+		if ((lastx != newx) || (lasty != newy))
+		{
+#if 0
+			/*
+			if(fix255)
+			{
+				/* use fixed array size (for the curve graph) */
+				cd->curve[cd->outline][newx] = newy;
+			}
+			else
+			{
+				/* use dynamic allocated curve_ptr (for the real curve) */
+				cd->curve_ptr[cd->outline][newx] = newy;
+
+				if(gb_debug) printf("outline: %d  cX: %d cY: %d\n", (int)cd->outline, (int)newx, (int)newy);
+			}
+#endif
+			draw_line(Vector2(lastx,ymax-lasty),Vector2(newx,ymax-newy),Color(0.8,0.8,0.8,0.8),2.0);
+		}
+
+		lastx = newx;
+		lasty = newy;
+	}
+}
+
+
+void GraphCurveMapEdit::_notification(int p_what){
+
+	if (p_what==NOTIFICATION_DRAW) {
+
+		draw_style_box(get_stylebox("bg","Tree"),Rect2(Point2(),get_size()));
+
+		int w = get_size().x;
+		int h = get_size().y;
+
+		Vector2 prev=Vector2(0,0);
+		Vector2 prev2=Vector2(0,0);
+
+		for(int i=-1;i<points.size();i++) {
+
+			Vector2 next;
+			Vector2 next2;
+			if (i+1>=points.size()) {
+				next=Vector2(1,1);
+			} else {
+				next=Vector2(points[i+1].offset,points[i+1].height);
+			}
+
+			if (i+2>=points.size()) {
+				next2=Vector2(1,1);
+			} else {
+				next2=Vector2(points[i+2].offset,points[i+2].height);
+			}
+
+			/*if (i==-1 && prev.offset==next.offset) {
+				prev=next;
+				continue;
+			}*/
+
+			_plot_curve(prev2,prev,next,next2);
+
+			prev2=prev;
+			prev=next;
+		}
+
+		for(int i=0;i<points.size();i++) {
+
+			Color col=i==grabbed?Color(1,0.0,0.0,0.9):Color(1,1,1,0.8);
+
+
+			draw_rect(Rect2( Vector2(points[i].offset,1.0-points[i].height)*get_size()-Vector2(2,2),Vector2(5,5)),col);
+		}
+
+/*		if (grabbed!=-1) {
+
+			draw_rect(Rect2(total_w+3,0,h,h),points[grabbed].color);
+		}
+*/
+		if (has_focus()) {
+
+			draw_line(Vector2(-1,-1),Vector2(w+1,-1),Color(1,1,1,0.6));
+			draw_line(Vector2(w+1,-1),Vector2(w+1,h+1),Color(1,1,1,0.6));
+			draw_line(Vector2(w+1,h+1),Vector2(-1,h+1),Color(1,1,1,0.6));
+			draw_line(Vector2(-1,-1),Vector2(-1,h+1),Color(1,1,1,0.6));
+		}
+
+	}
+}
+
+Size2 GraphCurveMapEdit::get_minimum_size() const {
+
+	return Vector2(64,64);
+}
+
+
+
+void GraphCurveMapEdit::set_points(const Vector<Vector2>& p_points) {
+
+
+	points.clear();
+	for(int i=0;i<p_points.size();i++) {
+		Point p;
+		p.offset=p_points[i].x;
+		p.height=p_points[i].y;
+		points.push_back(p);
+	}
+
+	points.sort();
+	update();
+}
+
+Vector<Vector2> GraphCurveMapEdit::get_points() const {
+	Vector<Vector2> ret;
+	for(int i=0;i<points.size();i++)
+		ret.push_back(Vector2(points[i].offset,points[i].height));
+	return ret;
+}
+
+void GraphCurveMapEdit::_bind_methods(){
+
+	ObjectTypeDB::bind_method(_MD("_input_event"),&GraphCurveMapEdit::_input_event);
+	ADD_SIGNAL(MethodInfo("curve_changed"));
+}
+
+GraphCurveMapEdit::GraphCurveMapEdit(){
+
+	grabbed=-1;
+	grabbing=false;
+	set_focus_mode(FOCUS_ALL);
+
+}
+
 
 ////cbacks
 ///
@@ -306,6 +942,84 @@ void ShaderGraphView::_comment_edited(int p_id,Node* p_button) {
 
 }
 
+void ShaderGraphView::_color_ramp_changed(int p_id,Node* p_ramp) {
+
+	GraphColorRampEdit *cr=p_ramp->cast_to<GraphColorRampEdit>();
+
+	UndoRedo *ur=EditorNode::get_singleton()->get_undo_redo();
+
+
+	Vector<float> offsets=cr->get_offsets();
+	Vector<Color> colors=cr->get_colors();
+
+	DVector<float> new_offsets;
+	DVector<Color> new_colors;
+	{
+		new_offsets.resize(offsets.size());
+		new_colors.resize(colors.size());
+		DVector<float>::Write ow=new_offsets.write();
+		DVector<Color>::Write cw=new_colors.write();
+		for(int i=0;i<new_offsets.size();i++) {
+			ow[i]=offsets[i];
+			cw[i]=colors[i];
+		}
+
+	}
+
+
+	DVector<float> old_offsets=graph->color_ramp_node_get_offsets(type,p_id);
+	DVector<Color> old_colors=graph->color_ramp_node_get_colors(type,p_id);
+
+	if (old_offsets.size()!=new_offsets.size())
+		ur->create_action("Add/Remove to Color Ramp");
+	else
+		ur->create_action("Modify Color Ramp",true);
+
+	ur->add_do_method(graph.ptr(),"color_ramp_node_set_ramp",type,p_id,new_colors,new_offsets);
+	ur->add_undo_method(graph.ptr(),"color_ramp_node_set_ramp",type,p_id,old_colors,old_offsets);
+	ur->add_do_method(this,"_update_graph");
+	ur->add_undo_method(this,"_update_graph");
+	block_update=true;
+	ur->commit_action();
+	block_update=false;
+}
+
+void ShaderGraphView::_curve_changed(int p_id,Node* p_curve) {
+
+	GraphCurveMapEdit *cr=p_curve->cast_to<GraphCurveMapEdit>();
+
+	UndoRedo *ur=EditorNode::get_singleton()->get_undo_redo();
+
+
+	Vector<Point2> points=cr->get_points();
+
+	DVector<Vector2> new_points;
+	{
+		new_points.resize(points.size());
+		DVector<Vector2>::Write ow=new_points.write();
+		for(int i=0;i<new_points.size();i++) {
+			ow[i]=points[i];
+		}
+
+	}
+
+
+	DVector<Vector2> old_points=graph->curve_map_node_get_points(type,p_id);
+
+	if (old_points.size()!=new_points.size())
+		ur->create_action("Add/Remove to Curve Map");
+	else
+		ur->create_action("Modify Curve Map",true);
+
+	ur->add_do_method(graph.ptr(),"curve_map_node_set_points",type,p_id,new_points);
+	ur->add_undo_method(graph.ptr(),"curve_map_node_set_points",type,p_id,old_points);
+	ur->add_do_method(this,"_update_graph");
+	ur->add_undo_method(this,"_update_graph");
+	block_update=true;
+	ur->commit_action();
+	block_update=false;
+}
+
 
 void ShaderGraphView::_input_name_changed(const String& p_name, int p_id, Node *p_line_edit) {
 
@@ -1026,6 +1740,96 @@ void ShaderGraphView::_create_node(int p_id) {
 			gn->set_slot(2,true,ShaderGraph::SLOT_TYPE_SCALAR,typecol[ShaderGraph::SLOT_TYPE_SCALAR],false,0,Color());
 
 		} break; // vec3 interpolation  (with optional curve)
+		case ShaderGraph::NODE_COLOR_RAMP: {
+
+			gn->set_title("ColorRamp");
+			GraphColorRampEdit * ramp  = memnew( GraphColorRampEdit );
+
+			DVector<real_t> offsets = graph->color_ramp_node_get_offsets(type,p_id);
+			DVector<Color> colors = graph->color_ramp_node_get_colors(type,p_id);
+
+			int oc = offsets.size();
+
+			if (oc) {
+				DVector<real_t>::Read rofs = offsets.read();
+				DVector<Color>::Read rcol = colors.read();
+
+				Vector<float> ofsv;
+				Vector<Color> colorv;
+				for(int i=0;i<oc;i++) {
+					ofsv.push_back(rofs[i]);
+					colorv.push_back(rcol[i]);
+				}
+
+				ramp->set_ramp(ofsv,colorv);
+
+			}
+
+			ramp->connect("ramp_changed",this,"_color_ramp_changed",varray(p_id,ramp));
+			ramp->set_custom_minimum_size(Size2(128,1));
+			gn->add_child(ramp);
+
+
+			HBoxContainer *hbc = memnew( HBoxContainer );
+			hbc->add_constant_override("separation",0);
+			hbc->add_child( memnew(Label("c")));
+			hbc->add_spacer();
+			Label *l=memnew(Label("rgb"));
+			l->set_align(Label::ALIGN_RIGHT);
+			hbc->add_child( l);
+			gn->add_child(hbc);
+			l=memnew(Label("alpha"));
+			l->set_align(Label::ALIGN_RIGHT);
+			gn->add_child( l);
+
+
+			gn->set_slot(1,true,ShaderGraph::SLOT_TYPE_SCALAR,typecol[ShaderGraph::SLOT_TYPE_SCALAR],true,ShaderGraph::SLOT_TYPE_VEC,typecol[ShaderGraph::SLOT_TYPE_VEC]);
+			gn->set_slot(2,false,ShaderGraph::SLOT_MAX,Color(),true,ShaderGraph::SLOT_TYPE_SCALAR,typecol[ShaderGraph::SLOT_TYPE_SCALAR]);
+
+
+		} break; // scalar interpolation (with optional curve)
+		case ShaderGraph::NODE_CURVE_MAP: {
+
+			gn->set_title("CurveMap");
+			GraphCurveMapEdit * map  = memnew( GraphCurveMapEdit );
+
+			DVector<Vector2> points = graph->curve_map_node_get_points(type,p_id);
+
+			int oc = points.size();
+
+			if (oc) {
+				DVector<Vector2>::Read rofs = points.read();
+
+
+				Vector<Vector2> ofsv;
+				for(int i=0;i<oc;i++) {
+					ofsv.push_back(rofs[i]);
+				}
+
+				map->set_points(ofsv);
+
+			}
+			map->connect("curve_changed",this,"_curve_changed",varray(p_id,map));
+
+			//map->connect("map_changed",this,"_curve_map_changed",varray(p_id,map));
+			map->set_custom_minimum_size(Size2(128,64));
+			gn->add_child(map);
+
+			HBoxContainer *hbc = memnew( HBoxContainer );
+			hbc->add_constant_override("separation",0);
+			hbc->add_child( memnew(Label("c")));
+			hbc->add_spacer();
+			Label *l=memnew(Label("cmap"));
+			l->set_align(Label::ALIGN_RIGHT);
+			hbc->add_child( l);
+			gn->add_child(hbc);
+
+
+			gn->set_slot(1,true,ShaderGraph::SLOT_TYPE_SCALAR,typecol[ShaderGraph::SLOT_TYPE_SCALAR],true,ShaderGraph::SLOT_TYPE_SCALAR,typecol[ShaderGraph::SLOT_TYPE_SCALAR]);
+
+
+		} break; // scalar interpolation (with optional curve)
+
 		case ShaderGraph::NODE_SCALAR_INPUT: {
 
 			gn->set_title("ScalarUniform");
@@ -1173,6 +1977,28 @@ void ShaderGraphView::_create_node(int p_id) {
 			gn->set_slot(3,false,0,Color(),true,ShaderGraph::SLOT_TYPE_SCALAR,typecol[ShaderGraph::SLOT_TYPE_SCALAR]);
 
 		} break; // cubemap input (assignable in material)
+		case ShaderGraph::NODE_DEFAULT_TEXTURE: {
+
+			gn->set_title("CanvasItemTex");
+			HBoxContainer *hbc = memnew( HBoxContainer );
+			hbc->add_constant_override("separation",0);
+			hbc->add_child( memnew(Label("UV")));
+			hbc->add_spacer();
+			Label *l=memnew(Label("RGB"));
+			l->set_align(Label::ALIGN_RIGHT);
+			hbc->add_child(l);
+			gn->add_child(hbc);
+			l = memnew( Label );
+			l->set_text("Alpha");
+			l->set_align(Label::ALIGN_RIGHT);
+			gn->add_child(l);
+
+			gn->set_slot(0,true,ShaderGraph::SLOT_TYPE_VEC,typecol[ShaderGraph::SLOT_TYPE_VEC],true,ShaderGraph::SLOT_TYPE_VEC,typecol[ShaderGraph::SLOT_TYPE_VEC]);
+			gn->set_slot(1,false,0,Color(),true,ShaderGraph::SLOT_TYPE_SCALAR,typecol[ShaderGraph::SLOT_TYPE_SCALAR]);
+
+
+		} break; // screen texture sampler (takes UV) (only usable in fragment case Shader)
+
 		case ShaderGraph::NODE_OUTPUT: {
 			gn->set_title("Output");
 
@@ -1360,6 +2186,8 @@ void ShaderGraphView::_bind_methods() {
 	ObjectTypeDB::bind_method("_variant_edited",&ShaderGraphView::_variant_edited);
 	ObjectTypeDB::bind_method("_cube_edited",&ShaderGraphView::_cube_edited);
 	ObjectTypeDB::bind_method("_comment_edited",&ShaderGraphView::_comment_edited);
+	ObjectTypeDB::bind_method("_color_ramp_changed",&ShaderGraphView::_color_ramp_changed);
+	ObjectTypeDB::bind_method("_curve_changed",&ShaderGraphView::_curve_changed);
 
 	ObjectTypeDB::bind_method("_sg_updated",&ShaderGraphView::_sg_updated);
 }
@@ -1455,13 +2283,16 @@ const char* ShaderGraphEditor::node_names[ShaderGraph::NODE_TYPE_MAX]={
 	"GraphVecsToXform:Vectors -> XForm:", // 3 vec input", 1 xform output
 	"GraphScalarInterp:Scalar Interpolate", // scalar interpolation (with optional curve)
 	"GraphVecInterp:Vector Interpolate:", // vec3 interpolation  (with optional curve)
-	"GraphScalarUniform:Scalar Uniform", // scalar uniform (assignable in material)
+    "GraphColorRamp:Color Ramp", // vec3 interpolation  (with optional curve)
+    "GraphCurveMap:Curve Remap:", // vec3 interpolation  (with optional curve)
+    "GraphScalarUniform:Scalar Uniform", // scalar uniform (assignable in material)
 	"GraphVectorUniform:Vector Uniform", // vec3 uniform (assignable in material)
 	"GraphRgbUniform:RGB Uniform", // color uniform (assignable in material)
 	"GraphXformUniform:XForm Uniform", // mat4 uniform (assignable in material)
 	"GraphTextureUniform:Texture Uniform", // texture input (assignable in material)
 	"GraphCubeUniform:CubeMap Uniform:", // cubemap input (assignable in material)
-	"Output", // output (shader type dependent)
+    "GraphDefaultTexture:CanvasItem Texture:", // cubemap input (assignable in material)
+    "Output", // output (shader type dependent)
 	"GraphComment:Comment", // comment
 
 
diff --git a/tools/editor/plugins/shader_graph_editor_plugin.h b/tools/editor/plugins/shader_graph_editor_plugin.h
index bd983c59be..c6fb2f82b1 100644
--- a/tools/editor/plugins/shader_graph_editor_plugin.h
+++ b/tools/editor/plugins/shader_graph_editor_plugin.h
@@ -45,6 +45,77 @@
 */
 
 
+class GraphColorRampEdit : public Control {
+
+	OBJ_TYPE(GraphColorRampEdit,Control);
+
+
+	struct Point {
+
+		float offset;
+		Color color;
+		bool operator<(const Point& p_ponit) const {
+			return offset<p_ponit.offset;
+		}
+	};
+
+	PopupPanel *popup;
+	ColorPicker *picker;
+
+
+	bool grabbing;
+	int grabbed;
+	float grabbed_at;
+	Vector<Point> points;
+
+	void _color_changed(const Color& p_color);
+
+protected:
+	void _input_event(const InputEvent& p_event);
+	void _notification(int p_what);
+	static void _bind_methods();
+public:
+
+	void set_ramp(const Vector<float>& p_offsets,const Vector<Color>& p_colors);
+	Vector<float> get_offsets() const;
+	Vector<Color> get_colors() const;
+	virtual Size2 get_minimum_size() const;
+	GraphColorRampEdit();
+};
+
+
+class GraphCurveMapEdit : public Control {
+
+	OBJ_TYPE(GraphCurveMapEdit,Control);
+
+
+	struct Point {
+
+		float offset;
+		float height;
+		bool operator<(const Point& p_ponit) const {
+			return offset<p_ponit.offset;
+		}
+	};
+
+
+	bool grabbing;
+	int grabbed;
+	Vector<Point> points;
+
+	void _plot_curve(const Vector2& p_a,const Vector2& p_b,const Vector2& p_c,const Vector2& p_d);
+protected:
+	void _input_event(const InputEvent& p_event);
+	void _notification(int p_what);
+	static void _bind_methods();
+public:
+
+	void set_points(const Vector<Vector2>& p_points);
+	Vector<Vector2> get_points() const;
+	virtual Size2 get_minimum_size() const;
+	GraphCurveMapEdit();
+};
+
 class ShaderGraphView : public Node {
 
 	OBJ_TYPE(ShaderGraphView,Node);
@@ -95,7 +166,8 @@ class ShaderGraphView : public Node {
 	void _cube_edited(int p_id,Node* p_button);
 	void _variant_edited();
 	void _comment_edited(int p_id,Node* p_button);
-
+	void _color_ramp_changed(int p_id,Node* p_ramp);
+	void _curve_changed(int p_id,Node* p_curve);
 	void _sg_updated();
 	Map<int,GraphNode*> node_map;
 protected: