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gamemachine/VertexSkinning.shader

Last active March 28, 2025 02:41
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Revisions

  1. gamemachine revised this gist Feb 23, 2020. 1 changed file with 4 additions and 1 deletion.
    5 changes: 4 additions & 1 deletion VertexSkinning.shader
    View file
    Original file line number Diff line number Diff line change
    @@ -1,3 +1,6 @@
    // For the new DOTS animation. Although you need to use DrawMeshInstanced yourself, Hybrid renderer does not support instanced
    // props for builtin.

    Shader "Custom/VertexSkinning"
    {
    Properties
    @@ -19,7 +22,7 @@ Shader "Custom/VertexSkinning"
    // Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it uses non-square matrices
    #pragma exclude_renderers gles

    #pragma surface surf Standard fullforwardshadows vertex:vert
    #pragma surface surf Standard addshadow fullforwardshadows vertex:vert
    #pragma target 4.5
    #pragma only_renderers d3d11 ps4 xboxone vulkan metal switch
    #pragma multi_compile_instancing
  2. gamemachine revised this gist Feb 22, 2020. 1 changed file with 4 additions and 4 deletions.
    8 changes: 4 additions & 4 deletions VertexSkinning.shader
    View file
    Original file line number Diff line number Diff line change
    @@ -11,8 +11,9 @@ Shader "Custom/VertexSkinning"
    }
    SubShader
    {
    Tags { "RenderType"="Opaque" }
    LOD 200
    Tags {
    "RenderType"="Opaque"
    }

    CGPROGRAM
    // Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it uses non-square matrices
    @@ -72,10 +73,9 @@ Shader "Custom/VertexSkinning"
    }
    #endif

    void vert(inout appdata v, out Input o)
    void vert(inout appdata v)
    {
    #ifdef SHADER_API_D3D11
    UNITY_INITIALIZE_OUTPUT(Input, o);
    UNITY_SETUP_INSTANCE_ID(v);
    int offset = (int)_SkinMatricesOffset;

  3. gamemachine created this gist Feb 21, 2020.
    103 changes: 103 additions & 0 deletions VertexSkinning.shader
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,103 @@
    Shader "Custom/VertexSkinning"
    {
    Properties
    {
    _Color ("Color", Color) = (1,1,1,1)
    _MainTex ("Albedo (RGB)", 2D) = "white" {}
    _Glossiness ("Smoothness", Range(0,1)) = 0.5
    _Metallic ("Metallic", Range(0,1)) = 0.0

    _SkinMatricesOffset("Bone Index Offset", Float) = 0
    }
    SubShader
    {
    Tags { "RenderType"="Opaque" }
    LOD 200

    CGPROGRAM
    // Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it uses non-square matrices
    #pragma exclude_renderers gles

    #pragma surface surf Standard fullforwardshadows vertex:vert
    #pragma target 4.5
    #pragma only_renderers d3d11 ps4 xboxone vulkan metal switch
    #pragma multi_compile_instancing

    sampler2D _MainTex;
    half _Glossiness;
    half _Metallic;
    fixed4 _Color;

    struct appdata {
    float4 vertex : POSITION;
    float3 normal : NORMAL;
    float4 tangent : TANGENT;
    float4 weights : BLENDWEIGHTS;
    uint4 indices : BLENDINDICES;
    float2 texcoord : TEXCOORD0;
    float2 texcoord1 : TEXCOORD1;
    float2 texcoord2 : TEXCOORD2;
    UNITY_VERTEX_INPUT_INSTANCE_ID
    };

    struct Input
    {
    float2 uv_MainTex;

    };

    UNITY_INSTANCING_BUFFER_START(Props)
    UNITY_DEFINE_INSTANCED_PROP(float, _SkinMatricesOffset_Array)
    #define _SkinMatricesOffset UNITY_ACCESS_INSTANCED_PROP(Props, _SkinMatricesOffset_Array)
    UNITY_INSTANCING_BUFFER_END(Props)



    #ifdef SHADER_API_D3D11
    uniform StructuredBuffer<float3x4> _SkinMatrices;

    void Unity_LinearBlendSkinning_float(uint4 indices, int indexOffset, float4 weights, float3 positionIn, float3 normalIn, float3 tangentIn, out float3 positionOut, out float3 normalOut, out float3 tangentOut)
    {
    for (int i = 0; i < 4; i++)
    {
    float3x4 skinMatrix = _SkinMatrices[indices[i] + indexOffset];
    float3 vtransformed = mul(skinMatrix, float4(positionIn, 1));
    float3 ntransformed = mul(skinMatrix, float4(normalIn, 0));
    float3 ttransformed = mul(skinMatrix, float4(tangentIn, 0));

    positionOut += vtransformed * weights[i];
    normalOut += ntransformed * weights[i];
    tangentOut += ttransformed * weights[i];
    }
    }
    #endif

    void vert(inout appdata v, out Input o)
    {
    #ifdef SHADER_API_D3D11
    UNITY_INITIALIZE_OUTPUT(Input, o);
    UNITY_SETUP_INSTANCE_ID(v);
    int offset = (int)_SkinMatricesOffset;

    float3 positionOut = 0;
    float3 normalOut = 0;
    float3 tangentOut = 0;
    Unity_LinearBlendSkinning_float(v.indices, offset, v.weights, v.vertex.xyz, v.normal, v.tangent.xyz, positionOut, normalOut, tangentOut);
    v.vertex = float4(positionOut.xyz, v.vertex.w);
    v.normal = normalOut;
    v.tangent = float4(tangentOut.xyz, v.tangent.w);
    #endif
    }

    void surf (Input IN, inout SurfaceOutputStandard o)
    {
    fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
    o.Albedo = c.rgb;
    o.Metallic = _Metallic;
    o.Smoothness = _Glossiness;
    o.Alpha = c.a;
    }
    ENDCG
    }
    FallBack "Diffuse"
    }