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| | | Shader "Post Processing/Custom Motion Vector Texture" |
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| | | { |
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| | | Properties |
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| | | { |
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| | | _MotionTex ("Motion Vector Texture", 2D) = "black" {} |
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| | | _MotionAmount ("Motion Vector Multiplier", range (-0.25, 0.25)) = 0 |
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| | | } |
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| | | SubShader |
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| | | { |
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| | | Pass |
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| | | { |
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| | | Name "Motion Vectors" |
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| | | Tags { "LightMode" = "MotionVectors" } |
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| | | |
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| | | ZTest LEqual Cull Back ZWrite On |
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| | | |
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| | | CGPROGRAM |
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| | | |
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| | | #pragma vertex vert |
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| | | #pragma fragment FragMotionVectors |
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| | | #include "UnityCG.cginc" |
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| | | |
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| | | float4 _MotionValue; |
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| | | sampler2D _MotionTex; |
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| | | float4 _MotionTex_ST; |
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| | | float _MotionAmount; |
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| | | |
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| | | struct appdata |
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| | | { |
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| | | float4 vertex : POSITION; |
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| | | float2 uv : TEXCOORD0; |
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| | | float3 normal : NORMAL; |
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| | | float4 tangent : TANGENT; |
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| | | }; |
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| | | |
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| | | struct v2f |
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| | | { |
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| | | float2 uv : TEXCOORD0; |
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| | | float4 vertex : SV_POSITION; |
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| | | float3 normal : NORMAL; |
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| | | float4 tangent : TANGENT; |
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| | | float4 transposedTangent : TEXCOORD1; |
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| | | }; |
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| | | |
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| | | v2f vert (appdata v) |
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| | | { |
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| | | v2f o; |
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| | | o.vertex = UnityObjectToClipPos(v.vertex); |
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| | | o.uv = TRANSFORM_TEX(v.uv, _MotionTex); |
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| | | o.normal = UnityObjectToClipPos(v.normal); |
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| | | o.normal = o.normal * 0.5 + 0.5; |
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| | | o.tangent = mul(UNITY_MATRIX_MV, v.tangent); |
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| | | o.transposedTangent = (mul(UNITY_MATRIX_IT_MV, v.tangent)) * 0.5 + 0.5; |
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| | | return o; |
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| | | } |
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| | | |
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| | | float4 FragMotionVectors(v2f i) : SV_Target |
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| | | { |
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| | | half4 c = tex2D(_MotionTex, i.uv); |
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| | | c.rg = (c.rg * 2.0 - 1.0) * _MotionAmount; // Using color texture so need to make 0.5 neutral |
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| | | half4 t1 = i.tangent * 0.005; // Sides of tire |
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| | | half4 t2 = c * float4(i.transposedTangent.r * 2.0, i.transposedTangent.g * 2.0, 0.0, 1.0); // Front of tire |
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| | | half4 t3 = lerp(t2, t1, c.b); // Lerp between front and side of tire |
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| | | return t3 * _MotionAmount; |
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| | | } |
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| | | |
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| | | ENDCG |
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| | | } |
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| | | } |
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| | | } |
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| | | Shader "Post Processing/Custom Motion Vector Texture"
|
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| | | {
|
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| | | Properties
|
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| | | {
|
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| | | _MotionTex ("Motion Vector Texture", 2D) = "black" {}
|
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| | | _MotionAmount ("Motion Vector Multiplier", range (-0.25, 0.25)) = 0
|
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| | | }
|
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| | | SubShader
|
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| | | {
|
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| | | Pass
|
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| | | {
|
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| | | Name "Motion Vectors"
|
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| | | Tags { "LightMode" = "MotionVectors" }
|
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| | | |
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| | | ZTest LEqual Cull Back ZWrite On
|
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| | | |
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| | | CGPROGRAM
|
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| | |
|
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| | | #pragma vertex vert
|
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| | | #pragma fragment FragMotionVectors
|
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| | | #include "UnityCG.cginc"
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| | |
|
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| | | float4 _MotionValue;
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| | | sampler2D _MotionTex;
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| | | float4 _MotionTex_ST;
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| | | float _MotionAmount;
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| | |
|
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| | | struct appdata
|
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| | | {
|
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| | | float4 vertex : POSITION;
|
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| | | float2 uv : TEXCOORD0;
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| | | float3 normal : NORMAL;
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| | | float4 tangent : TANGENT;
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| | | };
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| | |
|
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| | | struct v2f
|
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| | | {
|
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| | | float2 uv : TEXCOORD0;
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| | | float4 vertex : SV_POSITION;
|
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| | | float3 normal : NORMAL;
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| | | float4 tangent : TANGENT;
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| | | float4 transposedTangent : TEXCOORD1;
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| | | };
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| | |
|
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| | | v2f vert (appdata v)
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| | | {
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| | | v2f o;
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| | | o.vertex = UnityObjectToClipPos(v.vertex);
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| | | o.uv = TRANSFORM_TEX(v.uv, _MotionTex);
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| | | o.normal = UnityObjectToClipPos(v.normal);
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| | | o.normal = o.normal * 0.5 + 0.5;
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| | | o.tangent = mul(UNITY_MATRIX_MV, v.tangent);
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| | | o.transposedTangent = (mul(UNITY_MATRIX_IT_MV, v.tangent)) * 0.5 + 0.5;
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| | | return o;
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| | | }
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| | | |
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| | | float4 FragMotionVectors(v2f i) : SV_Target
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| | | {
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| | | half4 c = tex2D(_MotionTex, i.uv);
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| | | c.rg = (c.rg * 2.0 - 1.0) * _MotionAmount; // Using color texture so need to make 0.5 neutral
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| | | half4 t1 = i.tangent * 0.005; // Sides of tire
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| | | half4 t2 = c * float4(i.transposedTangent.r * 2.0, i.transposedTangent.g * 2.0, 0.0, 1.0); // Front of tire
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| | | half4 t3 = lerp(t2, t1, c.b); // Lerp between front and side of tire
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| | | return t3 * _MotionAmount;
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| | | }
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| | | |
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| | | ENDCG
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| | | }
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| | | }
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| | | }
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