SPIRV-Cross/reference/shaders/desktop-only/tesc/basic.desktop.sso.tesc

#version 450
layout(vertices = 1) out;

in gl_PerVertex
{
    vec4 gl_Position;
} gl_in[gl_MaxPatchVertices];

out gl_PerVertex
{
    vec4 gl_Position;
} gl_out[1];

layout(location = 0) patch out vec3 vFoo;

void main()
{
    gl_TessLevelInner[0] = 8.8999996185302734375;
    gl_TessLevelInner[1] = 6.900000095367431640625;
    gl_TessLevelOuter[0] = 8.8999996185302734375;
    gl_TessLevelOuter[1] = 6.900000095367431640625;
    gl_TessLevelOuter[2] = 3.900000095367431640625;
    gl_TessLevelOuter[3] = 4.900000095367431640625;
    vFoo = vec3(1.0);
    gl_out[gl_InvocationID].gl_Position = gl_in[0].gl_Position + gl_in[1].gl_Position;
}