Added sampler port type for visual shaders

4 files changed, 91 insertions, 13 deletions

diff --git a/scene/resources/visual_shader.cpp b/scene/resources/visual_shader.cpp
index 3f2261b043..6c829e6e81 100644
--- a/scene/resources/visual_shader.cpp
+++ b/scene/resources/visual_shader.cpp
@@ -122,7 +122,8 @@ void VisualShaderNode::_bind_methods() {
 	BIND_ENUM_CONSTANT(PORT_TYPE_VECTOR);
 	BIND_ENUM_CONSTANT(PORT_TYPE_BOOLEAN);
 	BIND_ENUM_CONSTANT(PORT_TYPE_TRANSFORM);
-	BIND_ENUM_CONSTANT(PORT_TYPE_ICON_COLOR);
+	BIND_ENUM_CONSTANT(PORT_TYPE_SAMPLER);
+	BIND_ENUM_CONSTANT(PORT_TYPE_MAX);
 }
 
 VisualShaderNode::VisualShaderNode() {
@@ -1058,7 +1059,15 @@ Error VisualShader::_write_node(Type type, StringBuilder &global_code, StringBui
 
 			String src_var = "n_out" + itos(from_node) + "p" + itos(from_port);
 
-			if (in_type == out_type) {
+			if (in_type == VisualShaderNode::PORT_TYPE_SAMPLER && out_type == VisualShaderNode::PORT_TYPE_SAMPLER) {
+
+				VisualShaderNodeUniform *uniform = (VisualShaderNodeUniform *)graph[type].nodes[from_node].node.ptr();
+				if (uniform) {
+					inputs[i] = uniform->get_uniform_name();
+				} else {
+					inputs[i] = "";
+				}
+			} else if (in_type == out_type) {
 				inputs[i] = src_var;
 			} else if (in_type == VisualShaderNode::PORT_TYPE_SCALAR && out_type == VisualShaderNode::PORT_TYPE_VECTOR) {
 				inputs[i] = "dot(" + src_var + ",vec3(0.333333,0.333333,0.333333))";
@@ -2207,7 +2216,7 @@ void VisualShaderNodeGroupBase::clear_output_ports() {
 void VisualShaderNodeGroupBase::set_input_port_type(int p_id, int p_type) {
 
 	ERR_FAIL_COND(!has_input_port(p_id));
-	ERR_FAIL_COND(p_type < 0 || p_type > PORT_TYPE_TRANSFORM);
+	ERR_FAIL_COND(p_type < 0 || p_type >= PORT_TYPE_MAX);
 
 	if (input_ports[p_id].type == p_type)
 		return;
@@ -2273,7 +2282,7 @@ String VisualShaderNodeGroupBase::get_input_port_name(int p_id) const {
 void VisualShaderNodeGroupBase::set_output_port_type(int p_id, int p_type) {
 
 	ERR_FAIL_COND(!has_output_port(p_id));
-	ERR_FAIL_COND(p_type < 0 || p_type > PORT_TYPE_TRANSFORM);
+	ERR_FAIL_COND(p_type < 0 || p_type >= PORT_TYPE_MAX);
 
 	if (output_ports[p_id].type == p_type)
 		return;
diff --git a/scene/resources/visual_shader.h b/scene/resources/visual_shader.h
index 45beb8e6ca..d9f089586d 100644
--- a/scene/resources/visual_shader.h
+++ b/scene/resources/visual_shader.h
@@ -184,7 +184,8 @@ public:
 		PORT_TYPE_VECTOR,
 		PORT_TYPE_BOOLEAN,
 		PORT_TYPE_TRANSFORM,
-		PORT_TYPE_ICON_COLOR // just a hint for node tree icons, do not use it as actual port type !
+		PORT_TYPE_SAMPLER,
+		PORT_TYPE_MAX,
 	};
 
 	virtual String get_caption() const = 0;
diff --git a/scene/resources/visual_shader_nodes.cpp b/scene/resources/visual_shader_nodes.cpp
index b7173b157e..24e436e61c 100644
--- a/scene/resources/visual_shader_nodes.cpp
+++ b/scene/resources/visual_shader_nodes.cpp
@@ -361,15 +361,35 @@ String VisualShaderNodeTexture::get_caption() const {
 }
 
 int VisualShaderNodeTexture::get_input_port_count() const {
-	return 2;
+	return 3;
 }
 
 VisualShaderNodeTexture::PortType VisualShaderNodeTexture::get_input_port_type(int p_port) const {
-	return p_port == 0 ? PORT_TYPE_VECTOR : PORT_TYPE_SCALAR;
+
+	switch (p_port) {
+		case 0:
+			return PORT_TYPE_VECTOR;
+		case 1:
+			return PORT_TYPE_SCALAR;
+		case 2:
+			return PORT_TYPE_SAMPLER;
+		default:
+			return PORT_TYPE_SCALAR;
+	}
 }
 
 String VisualShaderNodeTexture::get_input_port_name(int p_port) const {
-	return p_port == 0 ? "uv" : "lod";
+
+	switch (p_port) {
+		case 0:
+			return "uv";
+		case 1:
+			return "lod";
+		case 2:
+			return "sampler";
+		default:
+			return "";
+	}
 }
 
 int VisualShaderNodeTexture::get_output_port_count() const {
@@ -440,6 +460,29 @@ String VisualShaderNodeTexture::generate_code(Shader::Mode p_mode, VisualShader:
 		return code;
 	}
 
+	if (source == SOURCE_PORT) {
+		String id = p_input_vars[2];
+		String code;
+		if (id == String()) {
+			code += "\tvec4 " + id + "_tex_read = vec4(0.0);\n";
+		} else {
+			if (p_input_vars[0] == String()) { //none bound, do nothing
+
+				code += "\tvec4 " + id + "_tex_read = vec4(0.0);\n";
+
+			} else if (p_input_vars[1] == String()) {
+				//no lod
+				code += "\tvec4 " + id + "_tex_read = texture( " + id + " , " + p_input_vars[0] + ".xy );\n";
+			} else {
+				code += "\tvec4 " + id + "_tex_read = textureLod( " + id + " , " + p_input_vars[0] + ".xy , " + p_input_vars[1] + " );\n";
+			}
+
+			code += "\t" + p_output_vars[0] + " = " + id + "_tex_read.rgb;\n";
+			code += "\t" + p_output_vars[1] + " = " + id + "_tex_read.a;\n";
+		}
+		return code;
+	}
+
 	if (source == SOURCE_SCREEN && (p_mode == Shader::MODE_SPATIAL || p_mode == Shader::MODE_CANVAS_ITEM) && p_type == VisualShader::TYPE_FRAGMENT) {
 
 		String code = "\t{\n";
@@ -588,6 +631,10 @@ String VisualShaderNodeTexture::get_warning(Shader::Mode p_mode, VisualShader::T
 		return String(); // all good
 	}
 
+	if (source == SOURCE_PORT) {
+		return String(); // all good
+	}
+
 	if (source == SOURCE_SCREEN && (p_mode == Shader::MODE_SPATIAL || p_mode == Shader::MODE_CANVAS_ITEM) && p_type == VisualShader::TYPE_FRAGMENT) {
 
 		return String(); // all good
@@ -625,7 +672,7 @@ void VisualShaderNodeTexture::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_texture_type", "value"), &VisualShaderNodeTexture::set_texture_type);
 	ClassDB::bind_method(D_METHOD("get_texture_type"), &VisualShaderNodeTexture::get_texture_type);
 
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "source", PROPERTY_HINT_ENUM, "Texture,Screen,Texture2D,NormalMap2D,Depth"), "set_source", "get_source");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "source", PROPERTY_HINT_ENUM, "Texture,Screen,Texture2D,NormalMap2D,Depth,SamplerPort"), "set_source", "get_source");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "texture_type", PROPERTY_HINT_ENUM, "Data,Color,Normalmap"), "set_texture_type", "get_texture_type");
 
@@ -3023,15 +3070,35 @@ String VisualShaderNodeTextureUniform::get_input_port_name(int p_port) const {
 }
 
 int VisualShaderNodeTextureUniform::get_output_port_count() const {
-	return 2;
+	return 3;
 }
 
 VisualShaderNodeTextureUniform::PortType VisualShaderNodeTextureUniform::get_output_port_type(int p_port) const {
-	return p_port == 0 ? PORT_TYPE_VECTOR : PORT_TYPE_SCALAR;
+
+	switch (p_port) {
+		case 0:
+			return PORT_TYPE_VECTOR;
+		case 1:
+			return PORT_TYPE_SCALAR;
+		case 2:
+			return PORT_TYPE_SAMPLER;
+		default:
+			return PORT_TYPE_SCALAR;
+	}
 }
 
 String VisualShaderNodeTextureUniform::get_output_port_name(int p_port) const {
-	return p_port == 0 ? "rgb" : "alpha";
+
+	switch (p_port) {
+		case 0:
+			return "rgb";
+		case 1:
+			return "alpha";
+		case 2:
+			return "sampler";
+		default:
+			return "";
+	}
 }
 
 String VisualShaderNodeTextureUniform::generate_global(Shader::Mode p_mode, VisualShader::Type p_type, int p_id) const {
diff --git a/scene/resources/visual_shader_nodes.h b/scene/resources/visual_shader_nodes.h
index 0c6e060353..1e4608444c 100644
--- a/scene/resources/visual_shader_nodes.h
+++ b/scene/resources/visual_shader_nodes.h
@@ -199,7 +199,8 @@ public:
 		SOURCE_SCREEN,
 		SOURCE_2D_TEXTURE,
 		SOURCE_2D_NORMAL,
-		SOURCE_DEPTH
+		SOURCE_DEPTH,
+		SOURCE_PORT,
 	};
 
 	enum TextureType {