// default shaders and custom shader format
loadShader("outline",
`vec4 vert(vec2 pos, vec2 uv, vec4 color) {
// predefined functions to get the default value by KAPLAY
return def_vert();
}`,
`vec4 frag(vec2 pos, vec2 uv, vec4 color, sampler2D tex) {
// turn everything blue-ish
return def_frag() * vec4(0, 0, 1, 1);
}`, false)