[input layout]
0 r32g32b32a32-float texcoord
0 r32g32-float position

[vb 0]
0.0 1.0 0.0 1.0   -2.0 -2.0
0.0 1.0 0.0 1.0   -2.0  2.0
0.0 1.0 0.0 1.0    2.0 -2.0
0.0 1.0 0.0 1.0    2.0  2.0

[vertex shader]

struct in_vertex
{
    struct
    {
        float4 texcoord : texcoord;
        float4 pos : position;
    } m;
};

struct out_vertex
{
    struct
    {
        float4 texcoord : texcoord;
        float4 pos : sv_position;
    } m;
};

void main(struct in_vertex i, out struct out_vertex o)
{
    o.m.pos = i.m.pos;
    o.m.texcoord = i.m.texcoord;
}

[pixel shader]
struct input
{
    struct
    {
        float4 texcoord : texcoord;
    } m;
};

struct output
{
    struct
    {
        float4 color : sv_target;
    } m;
};

struct output main(struct input i)
{
    struct output o;
    o.m.color = i.m.texcoord;
    return o;
}

[test]
todo(glsl) draw triangle strip 4
probe (0, 0) rgba (0.0, 1.0, 0.0, 1.0)