MODE7 Demo

04 Dec 2024 - smokku

« Mixed Modes Display List Demo : SOTB Demo »

X65 got its own MODE7 inspired by famous SNES MODE7.

Allows full affine transform of color indexed texture.

Texture can be as big as 256px x 256px, but this is not practical. Such texture would take full 64kB bank of memory, leaving no place for Display List. (Technically you could make DL part of your picture and get away with it… 😅)

Demo displays a 128px x 128px picture. Rotation vector is given simply by taking values from two sin/cos tables.

128px wide pixmap is exactly 1/3 of X65 horizontal resolution of 384px, So after setting a 3x horizontal scaling factor, you can display it full-screen with no distortion.