// Copyright 2020 Google LLC

struct PushConsts {
	float4 position;
	uint cascadeIndex;
};
[[vk::push_constant]] PushConsts pushConsts;

struct VSOutput
{
	float4 Pos : SV_POSITION;
[[vk::location(0)]] float2 UV : TEXCOORD0;
[[vk::location(1)]] uint CascadeIndex : TEXCOORD1;
};

VSOutput main(uint VertexIndex : SV_VertexID)
{
	VSOutput output = (VSOutput)0;
	output.UV = float2((VertexIndex << 1) & 2, VertexIndex & 2);
	output.CascadeIndex = pushConsts.cascadeIndex;
	output.Pos = float4(output.UV * 2.0f - 1.0f, 0.0f, 1.0f);
	return output;
}