9 commits

Author	SHA1	Message	Date
Ian Curtis	732e3ef51f	More fixes to microtexture coordinates. They go vertically up and down the texture sheet, and not horizontally as I had guessed. (Thanks HarryTurtle)	2017-03-11 12:55:47 +00:00
Ian Curtis	6636776f03	Fix microtexture texture coordinates (thanks HarryTuttle)	2017-03-11 01:18:43 +00:00
Ian Curtis	54c405709f	Need to walk back in memory and check the previous texture tiles to see if they overlap with the current textures being invalidated. If they overlap they must be cleared too. Algorithm is a bit brute forcy and more expensive than I'd like but it fixes the bad textures in Spikeout.	2016-11-22 20:30:10 +00:00
Ian Curtis	33cf6c89d1	our scratch mem must match correct max texture size	2016-10-08 11:59:25 +00:00
Ian Curtis	c472d90fb9	Fix the sky in advanced stage in Dirt Devils. It uses a massive (for 1998 :p) 1024x256 texture.	2016-10-06 20:10:45 +00:00
Ian Curtis	c3581c9fe8	Support multiple microTextures, fixes crazy texturing in sega ski champ. I'm assuming microtextures are always located on the other memory bank to the base texture. This logic seems to work for all our games anyway.	2016-10-06 01:37:29 +00:00
Ian Curtis	fd3eb49369	support 4 bit textures	2016-05-21 15:50:54 +00:00
Ian Curtis	a79fd2786a	optimise hash table access for better performance	2016-05-19 19:04:44 +00:00
Bart Trzynadlowski	34301e97e1	Adding new 3D engine by Ian Curtis. Old engine moved to Graphics/Legacy3D/.	2016-03-21 04:10:14 +00:00