73 commits

Author	SHA1	Message	Date
Ian Curtis	ff8e9d6aad	Check for overflow. Fixes some fade effects	2016-05-30 23:10:56 +00:00
Ian Curtis	36074d9fd5	Y texture offsets are just 5 bits. Texture coordinate wrap around happens in the same texture sheet, not into the next one. Fixes various texturing bugs in sega rally.	2016-05-30 13:25:00 +00:00
Bart Trzynadlowski	2ee0d9018e	New engine: modf -> std::modf (fixes compilation on gcc)	2016-05-28 20:54:25 +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	ce03c13847	Optimise non smooth texture repeat to only effect texture boundaries, rather than poly boundaries. Fixes a few ugly artefacts	2016-05-28 13:21:35 +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	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	c5ce2b9679	fix alpha testing for texture format 7	2016-05-22 19:17:15 +00:00
Ian Curtis	65d6342947	remove dead code	2016-05-21 16:26:00 +00:00
Ian Curtis	fd3eb49369	support 4 bit textures	2016-05-21 15:50:54 +00:00
Ian Curtis	e108b56664	correctly mask pointers	2016-05-19 22:23:50 +00:00
Ian Curtis	a79fd2786a	optimise hash table access for better performance	2016-05-19 19:04:44 +00:00
Ian Curtis	ff8d311dcc	support colour table pointer	2016-05-18 23:06:41 +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	9e279a0c1f	Non luminous polygons seem to be effected by the lightModifier also. API seems to have no restriction in this regard, neither does the SDK. The ocean hunter requires this for some of the 2d stuff. Light modifier values only seem to exist between 0-16, which is strange for 5 bits of precision. Possibly top bit disables the effect and lower 4 bits are the value. This clearly differs from the SDK, but without this the values come out clearly wrong.	2016-05-16 10:49:00 +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	c4b5b185c6	Disable light modifier on fog, seems not to work .. values don't make sense. Maybe the model3 doesn't use these.	2016-05-13 19:26:10 +00:00
Ian Curtis	c8f8cd1655	remove dead code	2016-05-13 08:40:53 +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
Bart Trzynadlowski	ddf3d5213d	FLT_MAX -> std::numeric_limits<float>::max()	2016-05-10 03:08:36 +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	242cddac2d	remove pointless loop	2016-05-07 15:45:02 +00:00
Ian Curtis	ded3168060	Split face colour from per vertex poly colour. Fixes colour bleeding between connected polys in harley.	2016-05-07 15:28:04 +00:00
Ian Curtis	05e1e4de37	update poly header class	2016-05-06 15:00:12 +00:00
Bart Trzynadlowski	fee1cfb126	Fixed compilation on gcc (gotos cannot cross variable declarations)	2016-05-05 22:01:59 +00:00
Ian Curtis	da4bab5f9b	Flat shaded polys can't share vertex normals with adjacent connected polys. Fixes some bad lighting in Harley on pavements	2016-05-05 08:06:06 +00:00
Ian Curtis	b2da849d90	support flat shading	2016-05-05 00:01:17 +00:00
Ian Curtis	3693a51cbb	Make sure texture is bound to correct texture unit, stop flashing micro textures in daytona	2016-05-04 16:30:15 +00:00
Ian Curtis	b0569007ef	set correct microtexture wrap mode	2016-05-04 10:30:58 +00:00
Ian Curtis	c545b9fd85	preliminary microtexture	2016-05-04 00:35:07 +00:00
Ian Curtis	396fba7d24	skip viewports marked as disabled, might stop parsing some bad data	2016-05-03 21:17:37 +00:00
Ian Curtis	c459772f8e	wrap invalid texture sizes, seems to fix bad textures in srally2 (skid marks)	2016-05-01 19:52:02 +00:00
Ian Curtis	7ec7906c0f	Turn off lighting if fixed shading (or no normals) flag is present. Fixes some of the lighting weirdness in scud	2016-04-30 20:32:44 +00:00
Ian Curtis	23a5839d46	Daytona seems to use 3 bits for texture transparency, will figure it out later but for now this works	2016-04-30 09:02:38 +00:00
Ian Curtis	30ca1792bb	Fix fixed shading maths	2016-04-30 08:58:13 +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	8f6ab2fcf9	simplify	2016-04-27 08:13:22 +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
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	58d187e59a	parse viewports in normal order	2016-04-19 22:05:12 +00:00
Ian Curtis	df9fefd064	walk siblings before children, fixes some of the transparency drawing issues in ocean hunter	2016-04-18 22:25:05 +00:00
Ian Curtis	057ee94210	simplify	2016-04-18 14:06:10 +00:00