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Stephane-D / SGDK

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Tutorials for working with 3D?

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NatThePorcupine
NatThePorcupine commented Jul 7, 2017

I haven't seen any tutorials related to working with SGDK's 3D capabilities (rendering 3d shapes with the Bitmap engine and working with various Maths3D functions). I've tried taking a look at the built-in cube demo, but there are several things that the demo alone can't really address, especially with lack of detailed comments. I found myself asking questions like "So is that checkerboard dither

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philpem / freebee

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Emulate VIDPAL expansion

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philpem
philpem commented Nov 28, 2019

The VIDPAL was an upgrade to the base 3B1 which sat between the 68010 CPU and the motherboard.

When the VIDPAL detected an access to video memory, it forced the CPU status bits to indicate a supervisor access. Effectively this bypasses memory protection for VRAM, allowing higher video RAM refresh rates.

This was used to great effect with a 3B1 GUI windowing system implementation.

While VI

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enhancement good first issue
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