outline

// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "Custom/Outline"
{
	Properties //variables
	{
		_MainTex("Main Texture (RGB)",2D) = "white" {} // allows for a texture property
		_Color("Color", Color) = (1,1,1,1) // allows for a color property
		_OutlineTex("Outline Texture", 2D) = "white" {}
		_OutlineColor("Outline Color", Color) = (1,1,1,1)
		_OutlineWidth("Outline Width", Range(1.0,10.0)) = 1.1
	}

		Subshader
		{
			Tags
			{
				"Queue" = "Transparent"
			//	"DisableBatching" = "True"
			}

			Pass
			{
				Name "OUTLINE"


				ZWrite Off


				CGPROGRAM // allows talk between two languages: shader lab and nvidia C for graphics

				// Function Defines - defines the name for the vertex and fragment functions

				// Define for the building function.
				// Has information of the shape and tells program how to build it
				#pragma vertex vert

				// Define for coloring function
				#pragma fragment frag

				// Includes

				#include "UnityCG.cginc" // build in shader functions.

				// Structures - can get data like - vertices's, normal, color, uv

				//appdata basically says how the vertex function has going to get inforamtions
				struct appdata // vertex information
				{
					float4 vertex : POSITION;
					float2 uv : TEXCOORD0;
				};

		// how fragments get its data
		struct v2f // fragment inforamtion
		{
			//without SV_ this shader doesnt work on playstation and some other platforms
			float4 pos : SV_POSITION;
			float2 uv: TEXCOORD0;
		};

		// Imports - Re-import property from shader lab to nvidia cg
		// properties have to same the same name like in shader lab part
		float4 _OutlineColor;
		sampler2D _OutlineTex;
		float _OutlineWidth;

		// Vertex function - builds the object
		//vertex to fragment

		//put struct appdata (above) into IN and convert it into a v2f
		v2f vert(appdata IN)
		{
			//get all vertexes of the shape and it's going to
			//times it by the outline width
			// and so its gonna make it either the same size if its 1 or more than one
			// SO its gonna get the shape and then its goona increase it a bit bigger than the actual shape size

			IN.vertex.xyz *= _OutlineWidth;

			v2f OUT;
			// its gonna take the object form the object space and
			// put it into camera clip space so it's gonna allow it to appear
			// on the screen

			//OUT.pos = UnityObjectToClipPos(IN.vertex);
			OUT.pos = UnityObjectToClipPos(IN.vertex);

		//	OUT.pos -=  float4(1, 0, 0,0);
			// swapping the uvs to our uvs
			OUT.uv = IN.uv;

			return OUT;
		}

		// fragment function - color it in

		fixed4 frag(v2f IN) : SV_Target
		{
			//gets the teture and wraps it around the uvs of the objects
			float4 texColor = tex2D(_OutlineTex, IN.uv);
			return texColor * _OutlineColor;
		}

		ENDCG
	}

	Pass
	{
		Name "OBJECT"
		CGPROGRAM // allows talk between two languages: shader lab and nvidia C for graphics

		// Function Defines - defines the name for the vertex and fragment functions

		// Define for the building function.
		// Has information of the shape and tells program how to build it
		#pragma vertex vert

		// Define for coloring function
		#pragma fragment frag

		// Includes

		#include "UnityCG.cginc" // build in shader functions.

		// Structures - can get data like - vertices's, normal, color, uv

		//appdata basically says how the vertex function has going to get inforamtions
		struct appdata // vertex information
		{
			float4 vertex : POSITION;
			float2 uv : TEXCOORD0;
		};

		// how fragments get its data
		struct v2f // fragment inforamtion
		{
			//without SV_ this shader doesnt work on playstation and some other platforms
			float4 pos : SV_POSITION;
			float2 uv: TEXCOORD0;
		};

		// Imports - Re-import property from shader lab to nvidia cg
		// properties have to same the same name like in shader lab part
		float4 _Color;
		sampler2D _MainTex;

		// Vertex function - builds the object
		//vertex to fragment

		//put struct appdata (above) into IN and convert it into a v2f
		v2f vert(appdata IN)
		{
			v2f OUT;
			// its gonna take the object form the object space and
			// put it into camera clip space so it's gonna allow it to appear
			// on the screen
			OUT.pos = UnityObjectToClipPos(IN.vertex);
			// swapping the uvs to our uvs
			OUT.uv = IN.uv;

			return OUT;
		}

		// fragment function - color it in

		fixed4 frag(v2f IN) : SV_Target
		{
			//gets the teture and wraps it around the uvs of the objects
			float4 texColor = tex2D(_MainTex, IN.uv);
			return texColor * _Color;
		}


		ENDCG
	}
		}
}