5 Bitmaps
| (require sgl/bitmap) |
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| bitmap : (is-a?/c bitmap%) | |||||||||||||||||||||
| with-gl-proc : ((-> any) . -> . any) = (lambda (f) (f)) | |||||||||||||||||||||
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Converts the given bitmap into an OpenGL list that can be rendered
with gl-call-list or glCallList. The rendered object
is a square on the z=0 plane with corners at (0,0) and
(1,1).
The with-gl-proc must accept a thunk and call it while the relevant OpenGL context is selected. Otherwise, the relevant OpenGL context must be selected already.
If mask is not #f, it is used as the mask bitmap for extracting alpha values.