vkd3d/tests/loop.shader_test

[pixel shader]
float a;

float4 main() : sv_target
{
    float res = 0;

    for (int i = 0; i < 10; ++i)
    {
        res += a;
        // The temp copy of 'a' must reserve its registers for the rest of the loop.
        // It shall not be overwritten.
    }
    return res;
}

[test]
uniform 0 float 5.0
draw quad
probe all rgba (50.0, 50.0, 50.0, 50.0)


[pixel shader]
float a;

float4 main() : sv_target
{
    float res = 0;

    for (int i = 0; i < 10; ++i)
    {
        res += a;
        // The temp copy of 'a' must reserve its registers for the rest of the loop.
        // It shall not be overwritten.
        i++;
    }
    return res;
}

[test]
uniform 0 float 4.0
draw quad
probe all rgba (20.0, 20.0, 20.0, 20.0)