struct Vertex {
    float3 point;
    float3 color;
};

struct VSIn {
    uint VertexIndex : SV_VertexID;
};

struct VSOut
{
	float4 Pos : SV_POSITION;
    float3 Color : COLOR0;
};

static const float3 points[] = {
    float3(-0.5f, -0.5f, 0.5f),
    float3(0.5f, -0.5f, 0.5f),
    float3(0.0f, 0.5f, 0.5f),
};
static const float3 colors[] = {
    float3(1.0f, 0.0f, 0.0f),
    float3(0.0f, 1.0f, 0.0f),
    float3(0.0f, 0.0f, 1.0f),
};

[shader("vertex")]
VSOut vsmain(VSIn input) {
    VSOut output;
    output.Pos = float4(points[input.VertexIndex], 1.0f);
    output.Color = colors[input.VertexIndex];

    return output;
}

struct FSOut {
    float4 Color;
};

[shader("fragment")]
FSOut fsmain(VSOut input) {
    FSOut outp;
    outp.Color = float4(input.Color, 1.0);
    return outp;
}