instance rendering example

instance.shader

Shader "SpaceFramework/PlanetShaderInstance"
{
    Properties
    {
        _MainTex("Color Texture", 2D) = "white" {}
    }

    CGINCLUDE

    #include "SFCommon.cginc"
    #include "UnityCG.cginc"

    StructuredBuffer<SQuadNodeVertex> _Meshes;
    sampler2D _MainTex;
    sampler2D _NormalMap;

    ENDCG

    SubShader
    {
        Tags{ "RenderType" = "Opaque" }
        LOD 100


        Pass
        {
            //Cull Off

            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma multi_compile_instancing

            UNITY_INSTANCING_CBUFFER_START(MyProperties)
                UNITY_DEFINE_INSTANCED_PROP(float, _MeshId)
            UNITY_INSTANCING_CBUFFER_END

            struct appdata
            {
                float4 pos : POSITION;
                uint vertexId: SV_VertexID;
                UNITY_VERTEX_INPUT_INSTANCE_ID
            };

            struct v2f
            {
                float4 pos : SV_POSITION;
                float2 uv: TEXCOORD0;
                float3 uBase: TEXCOORD1;
                float3 vBase: TEXCOORD2;
            };

            v2f vert(appdata v)
            {
                v2f o = (v2f)0;
                UNITY_SETUP_INSTANCE_ID(v);

                int meshId = (int)UNITY_ACCESS_INSTANCED_PROP(_MeshId);
                int vId = v.vertexId + meshId * VERTEX_PITCH;

                SQuadNodeVertex input = _Meshes[vId];
                o.pos = UnityObjectToClipPos(input.pos);

                o.uv = input.uv;
                //float3 normal = applyRotation(float3(0, 0, 1), input.rot);
                //o.normal = UnityObjectToWorldDir(normal);
                o.rot = input.rot;

                return o;
            }

            fixed4 frag(v2f i) : SV_Target
            {
                float3 rawN = tex2D(_NormalMap, i.uv);
                rawN.xy = rawN.xy * 2 - 1;
                float3 normal = normalize(applyRotation(rawN, i.rot));
                return tex2D(_MainTex, i.uv) *saturate(dot(float3(0.732, 0, 0.732), UnityObjectToWorldDir(normal)));
            }
            ENDCG
        }
    }

}