Non-Uniform Scale Transofrmation Support

[WeakKnight]

in gbuffer_vs.hlsl: o_vtx.normal = mul(instanceMatrix, float4(i_vtx.normal, 0)).xyz; o_vtx.tangent.xyz = mul(instanceMatrix, float4(i_vtx.tangent.xyz, 0)).xyz; o_vtx.tangent.w = i_vtx.tangent.w;

need to use transpose(inverse(instanceMatrix)).

[WeakKnight]

Also Odd Negative Scale need to be taken into consideration.