[pixel shader]
// Test empty constant buffer.
cbuffer Constants : register(b1)
{
};

float4 foo;

float4 main() : sv_target
{
    return foo;
}

[test]
uniform 0 float4 1.0 2.0 3.0 4.0
draw quad
probe all rgba (1.0, 2.0, 3.0, 4.0)


% SM1 buffer offset allocation follows different rules than SM4.
% Those would have to be tested separately.
[require]
shader model >= 4.0


% Respect register boundaries
[pixel shader]
cbuffer buffer
{
    float2 a;
    float2 b;
    float2 c;
    float3 d;
}

float4 main() : sv_target
{
    return float4(a.x, b.x, c.x, d.x);
}

[test]
uniform 0 float4 0.0 1.0 2.0 3.0
uniform 4 float4 4.0 5.0 6.0 7.0
uniform 8 float4 8.0 9.0 10.0 11.0
uniform 12 float4 12.0 13.0 14.0 15.0
draw quad
probe all rgba (0.0, 2.0, 4.0, 8.0)


[pixel shader]
cbuffer buffer
{
    float a;
    float b[2];
    float c;
}

float4 main() : sv_target
{
    return float4(a, b[0], b[1], c);
}

[test]
uniform 0 float4 0.0 1.0 2.0 3.0
uniform 4 float4 4.0 5.0 6.0 7.0
uniform 8 float4 8.0 9.0 10.0 11.0
draw quad
probe all rgba (0.0, 4.0, 8.0, 9.0)


[pixel shader]
cbuffer buffer
{
    float a;
    struct
    {
        float b;
        float c;
    } p;
    float d;
}

float4 main() : sv_target
{
    return float4(a, p.b, p.c, d);
}

[test]
uniform 0 float4 0.0 1.0 2.0 3.0
uniform 4 float4 4.0 5.0 6.0 7.0
uniform 8 float4 8.0 9.0 10.0 11.0
uniform 12 float4 12.0 13.0 14.0 15.0
draw quad
probe all rgba (0.0, 4.0, 5.0, 6.0)