17 commits

Author	SHA1	Message	Date
Ian Curtis	b19ceb0b6a	Texture coordinates seem to be scaled relative to the fixed texture size of 256. Thanks to HarryTurtle for figuring this crazy logic out. The road in scud matches the arcade now almost perfectly.	2017-03-13 00:59:35 +00:00
Ian Curtis	2c23268d88	Support microtexture relative scale. The exact scaling values are not known, but a 2x difference between each level seems highly likely. We know from visual inspection from scud that the first level is exactly 4. The SDK has a function that accepts a float input for scale and does this. lod = (1/scale) + 0.5. If lod>3 lod = 3. So this is our best guess.	2016-12-09 14:13:46 +00:00
Ian Curtis	483ba2f398	Fix the shading in scud. When lighting is disabled the fixed shading intensities appear to be offset values added to the colour value.	2016-11-11 17:50:27 +00:00
Bart Trzynadlowski	458684eb22	Fixed new 3D engine's fragment shader to work on some older GPUs by reducing the number of discard statements to one	2016-08-24 22:21:18 +00:00
Ian Curtis	2086b1c9af	Stencil layered polys, fixes shadow z fighting in some of the games. Other games maybe using stipple alpha (yuck), not sure yet.	2016-05-27 19:30:40 +00:00
Ian Curtis	3f9936d664	don't clamp after spot light code, looks much closer to h/w	2016-05-26 09:06:09 +00:00
Ian Curtis	89c987fae1	basic spotlight code	2016-05-26 00:08:12 +00:00
Ian Curtis	7e3c097a31	remove debug code	2016-05-16 17:26:53 +00:00
Ian Curtis	828fd8ebb4	Fog start is apparently the fog value at the viewport (0,0,0) I guess like an ambient value. Default value is negative	2016-05-16 17:10:04 +00:00
Ian Curtis	62eafacfc3	adjust (hopefully correct) fog equation	2016-05-16 10:44:16 +00:00
Ian Curtis	bc08276d60	preliminary specular	2016-05-15 16:24:49 +00:00
Ian Curtis	c545b9fd85	preliminary microtexture	2016-05-04 00:35:07 +00:00
Ian Curtis	8f6ab2fcf9	simplify	2016-04-27 08:13:22 +00:00
Bart Trzynadlowski	908d979cd7	Flattened out nested if-statements in new engine's fragment shader to improve compatibility with older GPUs (e.g., NVS 300)	2016-04-22 23:46:49 +00:00
Ian Curtis	23172c9aec	fix for bad matrix with NaN	2016-03-23 01:05:02 +00:00
Ian Curtis	f031e5d095	finish front/back face culling code based on matrix determinant. Optimised opengl to avoid redundant state changes.	2016-03-22 23:39:59 +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