float4 NearestNeighbor(float2 texCoord)
{
    int idx = tex2D(TexSampler, texCoord).r * 255;

    // No need to draw mask
    if (idx == 0)
        discard;
    float x = (palCoords.x + idx) % 1024;
    float y = palCoords.y + ((idx % 1024) / 1024.0);

    float4 color = tex2D(PalSampler, float2(x / 1024.0, y / 1024.0));

    //color.a *= src_alphamul;

    return color;
}