Sega Megadrive/Genesis development
https://gendev.spritesmind.net/forum/
Agreed. I converted to bytes before rotating, which definitely incurs a large performance hit, but manipulating nibbles probably wouldn't have astounding performance either.Manveru wrote:f the console sprites did not save 2 colors per byte, it will be a lot faster.
Oh neat ! i did known the raycasting was using V flip for only half screen rendering (ceiling and floor are rendered differently) but i never noticed they used the same engine for the raster race level, actually it's quite impressive, the road is nicely done as well (with tires traces).alko wrote:likely, at the race level using same principle of first-person-like level.How do you think those games did the scaling?
namely, ray casting (and mirror top\bottom of objects).
You can convert to bytes just one time to ram at the beginnig, or you can save the byte buffer in rom. The problem is to re-join the two nibbles to a byte after the rotation, having it ready to be sent to VDP.ehaliewicz wrote:Agreed. I converted to bytes before rotating, which definitely incurs a large performance hit, but manipulating nibbles probably wouldn't have astounding performance either.Manveru wrote:f the console sprites did not save 2 colors per byte, it will be a lot faster.
The title was released for Mega Drive and SNES in late 1994, with an expanded version released for the Mega CD shortly after. Burton comments that the CD format offered the company the chance to push their games further. “We loved technology and trying to achieve things on the hardware that no-one else could. On the Mega Drive we had full screen rotation and scaling, particle systems, 2D physics, 4096 colour displays, and a full screen Wolfenstein engine at 30fps. The Mega CD gave us more hardware to play with and we had one of the most advanced video play back engines of the time. Eurocom even licensed it from us for Mortal Kombat.”
Wouldn't be much use to me as it would all be assembly, wouldn't it?alko wrote:Could share code of sprite-scaling from gasega's wolfenstein3d ?
Yeah it's one of the scroll planes, and mirrored horizontally at that.alko wrote:how about this scaling?
https://youtu.be/zpGdWYwDNkk?t=2209
scale too quickly.
Maybe head of Lawnmower Man is not a sprite. This is a raster effect on plane ?
how to do it?
