[vb 0]
-1.0 -1.0 0.1 1.2
-1.0  1.0 0.1 2.0
 1.0 -1.0 0.7 1.2
 1.0  1.0 0.7 2.0

[input layout]
0 r32g32b32a32-float POSITION

[vertex shader]
float4 main(float4 pos : POSITION) : sv_position
{
    return pos;
}

[pixel shader fail(sm<4) todo(sm<4)]
float4 main(float4 pos : sv_position) : sv_target
{
    return pos;
}

[test]
clear rtv 0 0.0 0.0 0.0 0.0
todo(msl) draw triangle strip 4
probe ( 80, 140) rgba(  0.0,   0.0, 0.0,         0.0)
probe ( 80, 420) rgba( 80.5, 420.5, 0.100678146, 1.229981) 192
probe (180, 140) rgba(180.5, 140.5, 0.077760354, 1.918082) 192
probe (180, 420) rgba(180.5, 420.5, 0.194427669, 1.229981) 192
probe (460, 140) rgba(460.5, 140.5, 0.340260297, 1.918082) 192
probe (460, 420) rgba(460.5, 420.5, 0.456926346, 1.229981) 192
probe (560, 140) rgba(  0.0,   0.0, 0.0, 0.0)
probe (560, 420) rgba(560.5, 420.5, 0.550675929, 1.229981) 192