Merge pull request #103886 from maxpiepenbrink/fix-alpha-for-visual-shaders

Fix missing alpha input for visual shaders

scene/resources/visual_shader.cpp

@@ -3149,6 +3149,7 @@ const VisualShaderNodeInput::Port VisualShaderNodeInput::ports[] = {
 
 	// Node3D, Light
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "albedo", "ALBEDO" },
+	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_SCALAR, "alpha", "ALPHA" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_SCALAR, "attenuation", "ATTENUATION" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "backlight", "BACKLIGHT" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_SCALAR, "clip_space_far", "CLIP_SPACE_FAR" },