26 commits

Author	SHA1	Message	Date
Ian Curtis	3c78571615	There are 2 bits in the polyheader labelled discard. When both are set ie in sega rally, the polygons are totally discarded. Scud seems to set bit 1 which seems halve the opacity.	2017-04-15 19:00:46 +00:00
Ian Curtis	edfb521a9b	Daytona seems to use this completely undocumented feature of the real3d pro-1000, the ability to invert texture colours. This patch fixes the colours on the cars, and the signs which should flash by alternating their colours.	2017-04-05 17:57:38 +00:00
Ian Curtis	2ae2010ee4	Add high priority poly function. Used by harley.	2017-02-18 23:58:08 +00:00
Ian Curtis	4a116190b5	When the translator map?? bit is enabled the colour format seems to be 4-5bit. Max observed value is 16. Scaling these values up seems to produce the correct colours in harley and dirt devils.	2017-02-16 17:20:42 +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	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	9bc1fbf0cb	remove dead code	2016-06-02 21:26:50 +00:00
Bart Trzynadlowski	5c1a240565	New engine: expanded color indices to 12 bits from 11. Added PolygonHeader::ColorIndex and SensorColorIndex methods.	2016-05-28 20:49:10 +00:00
Bart Trzynadlowski	e4a5c341dd	Updated polygon header descriptions	2016-05-28 20:33:10 +00:00
Ian Curtis	661f19be19	fix transparency values, values are from 0-32, not 0-16 where the top bit disables	2016-05-27 22:20:57 +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	bc08276d60	preliminary specular	2016-05-15 16:24:49 +00:00
Ian Curtis	e295ad6868	double up polys for two sided polys, fixes some diffuse lighting problems	2016-05-13 08:39:48 +00:00
Ian Curtis	34c81eabee	update header documentation	2016-05-09 16:53:12 +00:00
Ian Curtis	43add90d2f	Fix bad texture seems	2016-05-09 16:26:34 +00:00
Ian Curtis	69a44a5d5f	add texture helper functions	2016-05-07 18:57:06 +00:00
Ian Curtis	05e1e4de37	update poly header class	2016-05-06 15:00:12 +00:00
Ian Curtis	b2da849d90	support flat shading	2016-05-05 00:01:17 +00:00
Ian Curtis	c545b9fd85	preliminary microtexture	2016-05-04 00:35:07 +00:00
Ian Curtis	c499e6640c	fixed shading code	2016-04-29 23:03:46 +00:00
Ian Curtis	09e27e3082	color flag	2016-04-27 16:42:31 +00:00
Ian Curtis	3e8439c09c	fix model normals, add code for fixed shading, as of yet flag to turn it on is unknown	2016-04-26 09:06:48 +00:00
Ian Curtis	688af26846	Possible work around for slightly incorrect viewport positions in ECA and harley	2016-04-02 22:13:59 +00:00
Ian Curtis	c7412828d4	Use proper texture wrapping mode for 2d. Stops garbage down the top and left sides. Should really use NPOT texture.	2016-04-02 12:23:46 +00:00
Ian Curtis	4992e59673	Cache rom models, for better performance.	2016-03-26 22:44:26 +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