cbuffer cb0 : register (b0)
{
	float aspectRatio;
	float distanceToCenter;
	float dummy2;
	float dummy3;
	float4x4 modelRotation;
	float4 pivot;
}

float4x4 getProjMatrix()
{
	float yScale = 2.4142135623730950488016887242097;//cot(fovY/2)
	float xScale = yScale / aspectRatio;
	float n = 0.1f;
	float f = 100.0f;
	float4x4 proj =
	{
		xScale,	0,		0,			0,
		0,		yScale,	0,			0,
		0,		0,		f/(f-n),	1,
		0,		0,		-n*f/(f-n),	0
	};
	return proj;
}

void main(in float3 pos : POSITION, out float4 result : SV_POSITION, inout float3 normal : NORMAL, inout float4 uv : TEXCOORD)
{
	float4 v = float4(pos, 1);
	v.xyz -= pivot.xyz;
	v = mul(v, modelRotation);
	v.z += distanceToCenter;
	v = mul(v, getProjMatrix());
	result = v;
}