KhronosGroup / KhronosGroup/OpenGL-Refpages
gluProject() formula missing perspective divide
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Description
Hi,
I'm pretty sure gluProject() is missing the perspective divide in its description formulas. The current docs on khronos.org say:
But if you look at e.g. https://salsa.debian.org/xorg-team/lib/libglu/-/blob/debian-unstable/src/libutil/project.c#L234 then v'' is definitely divided by w (i.e. v''_3) before converting to window coordinates.
Thanks,
Vegard
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Research direction
Locate the gluProject() reference-page source behind the khronos.org documentation and compare its formula with the libglu project.c implementation linked in the issue. Confirm the perspective divide is represented in the documented conversion to window coordinates, then check the generated reference page to verify the corrected formula is reflected.
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Assessment
- Tech stack
- html
- Domain
- computer-graphics, documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100