gistfile1.txt

// This is your vertex buffer, split into components.
// On D3D11 HW, you can probably use structured buffers to de-SoA this, but I haven't checked.
Buffer<float3> buf_pos;
Buffer<float3> buf_norm;
Buffer<float2> buf_uvs;

float4x4 clip_from_model;

uint base_index, index_mask;

struct Output
{
    float4 pos : POSITION;
    float3 normal : NORMAL;
    float2 uv : TEXCOORD0;
};

Output MyVS(uint index : SV_VertexID)
{
    Output o;

    uint fetch_index = (index + base_index) & index_mask;
    float4 in_model_pos = float4(buf_pos.Load(fetch_index), 1.0);
    float3 in_norm = buf_norm.Load(fetch_index);
    float2 in_uv = buf_uv.Load(fetch_index);
    
    o.pos = mul(clip_from_model, in_model_pos);
    o.normal = in_norm; // passthrough doesn't really make sense here, but it's just an example
    o.uv = in_uv;

    return o;
}