(glCoreClipPush . coords)

glCoreClipPush manages a clip stack, it is used to crop textures. glCoreClipPop points to the same function

Parameter	Description
coords	Optional: Coordinates x1 y1 x2 y2

Example

Example 1: As used in (modules/ln_glgui/numberwheel.scm) to apply cropping to numbers/images/strings on wheel

(glCoreClipPush (fl+ (flo wheelx) 3.0) (flo wheely) 
  (fl+ (fl- (flo wheelx) 5.0) (flo wheelw)) (fl+ (flo wheely) (flo wheelh)))