Understanding The Basics of 3D Graphics

[LP]

For the time being I want to play with pixels in delphi7 (I think its more than enough this version for me), just turn on/off pixels very fast, and from what you said delphix is not a good option. So besides Andora2d and Jedi-SDL, any other lightweight option?

You don't need any additional libraries if you want to process pixels yourself. Standard TBitmap and Delphi's form will suffice.

Check this article:
Manipulating Pixels With Delphi's ScanLine Property.