diff --git a/addons/ShaderLib/UV/SpherizeUV.gd b/addons/ShaderLib/UV/SpherizeUV.gd new file mode 100644 index 0000000..daa6c8c --- /dev/null +++ b/addons/ShaderLib/UV/SpherizeUV.gd @@ -0,0 +1,69 @@ +@tool +class_name VisualShaderNodeUVSpherize extends VisualShaderNodeCustom + +func _init() -> void: + _set_input_port_default_value(1, Vector2(0.5, 0.5)); + _set_input_port_default_value(2, 10.0); + _set_input_port_default_value(3, Vector2(0.0, 0.0)); + + set_output_port_for_preview(0) + +func _get_name() -> String: + return "Spherize" + +func _get_category() -> String: + return "UV" + +func _get_description() -> String: + return "Applies a spherical warping effect similar to a fisheye camera lens to the value of input UV." + +func _get_return_icon_type() -> VisualShaderNode.PortType: + return PORT_TYPE_VECTOR_2D + +func _get_input_port_count() -> int: + return 4 + +func _get_input_port_name(port: int) -> String: + match port: + 0: + return "uv" + 1: + return "center" + 2: + return "strength" + 3: + return "offset" + return "" + +func _get_input_port_type(port: int) -> VisualShaderNode.PortType: + match port: + 0, 1, 3: + return PORT_TYPE_VECTOR_2D + 2: + return PORT_TYPE_SCALAR + return PORT_TYPE_SCALAR + +func _get_output_port_count() -> int: + return 1 + +func _get_output_port_name(port: int) -> String: + return "uv" + +func _get_output_port_type(port: int) -> VisualShaderNode.PortType: + return PORT_TYPE_VECTOR_2D + +func _get_global_code(mode: Shader.Mode) -> String: + var code: String = preload("SpherizeUV.gdshaderinc").code + return code + +func _get_code(input_vars: Array[String], output_vars: Array[String], mode: Shader.Mode, type: VisualShader.Type) -> String: + var uv: String = "UV" + + if input_vars[0]: + uv = input_vars[0] + + var center: String = input_vars[1] + var strength: String = input_vars[2] + var offset: String = input_vars[3] + + return output_vars[0] + " = spherize_uv(%s, %s, %s, %s);" % [uv, center, strength, offset] diff --git a/addons/ShaderLib/UV/SpherizeUV.gdshaderinc b/addons/ShaderLib/UV/SpherizeUV.gdshaderinc new file mode 100644 index 0000000..a44e3dd --- /dev/null +++ b/addons/ShaderLib/UV/SpherizeUV.gdshaderinc @@ -0,0 +1,7 @@ +vec2 spherize_uv(vec2 uv, vec2 center, float strength, vec2 offset){ + vec2 _delta = uv - center; + float _delta2 = dot(_delta.xy, _delta.xy); + float _delta4 = _delta2 * _delta2; + vec2 _delta_offset = vec2(_delta4 * strength); + return uv + _delta * _delta_offset + offset; +} \ No newline at end of file