222 commits

Author	SHA1	Message	Date
Ian Curtis	9780f333b4	The model3 has this weird issue where the 2d and 3d planes are misaligned by 2 pixels. Originally I made a quick hack that shifted subviewports 2 pixels. But apparently that wasn't enough, as the issue effects everything. Thanks to HarryTuttle for pointing this out, and making a patch :)	2017-03-19 01:33:45 +00:00
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	dcd018ab7e	Change microtexture scaling values. Seem to much better match expected output. (thanks HarryTuttle)	2017-03-12 19:00:00 +00:00
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	503c88df11	fix the bad projection matrix in dirt devils and lost world	2017-03-07 01:29:07 +00:00
Ian Curtis	f173c3c3ce	The hardware actually seems to treat the quad primitive as a triangle strip. The winding order can actually change between the first and second 'triangle' inside the quad, leading our code to incorrectly backface cull the 2nd triangle. So we must re-calculate the winding order for the 2nd triangle. This fixes a massive missing poly in the road in la machine guns, probably other games too. The hardware is unaffected by the winding order, as it doesn't calculate the poly normal from the vertices directly, instead it uses the provided normal in the poly header.	2017-02-21 23:35:40 +00:00
Ian Curtis	5b9741bd5d	Support high priority polygons. They are treated as a separate overlay plane by the h/w. Fixes some missing fx in harley.	2017-02-20 17:22:32 +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	7407d03036	Put a check in there, in case near values come out really close to zero. Fixes a slight corner case in lemans24. A check probably should have been there originally :)	2017-02-08 16:14:50 +00:00
Ian Curtis	24cbeed526	Dynamically calculate near/far frustum planes for each viewport priority layer by clipping the overlapping meshes with the 4 frustum planes. A bit brute forcy, but the results are great.	2017-02-07 14:05:03 +00:00
Ian Curtis	144125a62e	mark the nodes without valid distances set	2017-02-05 15:36:05 +00:00
Ian Curtis	c82dc55485	cosmetics	2016-12-22 22:11:19 +00:00
Ian Curtis	72dd0dbf98	only need to cull against 4 clipping planes	2016-12-22 22:09:13 +00:00
Ian Curtis	20a9514aa2	For scroll fog set the viewport to the entire area, allows fog to work in widescreen mode	2016-12-15 19:27:08 +00:00
Ian Curtis	ca7046729e	properly cache un-normalised texture coordinates, fixes a texturing regression in Daytona	2016-12-15 12:10:52 +00:00
Ian Curtis	f355e2d062	fix microtexture colours	2016-12-15 00:45:32 +00:00
Ian Curtis	89e75a9803	Only check scroll fog value from the first viewport from each priority layer. Seems to fix problems with background fogging.	2016-12-14 19:57:05 +00:00
Ian Curtis	707e945db9	delete unused files	2016-12-09 14:15:11 +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	da8b63b44b	The model3 shares vertices between polygons. But it also seems to do this for polygons with different textures. This means the texture coordinate for potentially different sizes textures is shared. Currently this was broken leading to some corrupted looking textures. The fix is to simply cache the old texture coordinates, and recalculate the normalised coordinates in the new texture coordinate space.	2016-12-06 14:39:46 +00:00
Ian Curtis	10a5d2c0e1	refactor	2016-12-06 12:25:34 +00:00
Ian Curtis	eece2d75b4	tweak scroll fog logic	2016-12-04 22:37:49 +00:00
Ian Curtis	a310e8e5cf	minor optimisations	2016-11-28 17:32:25 +00:00
Ian Curtis	abc8c24b69	Only check the geometry for culling with valid node distances. We will need this later.	2016-11-27 19:30:46 +00:00
Ian Curtis	fe60d115d2	Revert changes .. if we clip against the real3d clipping planes, our wide screen hack won't work anymore.	2016-11-26 01:19:51 +00:00
Ian Curtis	665fa90425	Get clipping planes directly from the viewport data. Also no need to clip against a far plane	2016-11-26 01:12:08 +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	84ae8f035c	Skip processing the mipmap section of memory. The real3d doesn't create mipmaps down to 1x1 that is needed to do mipmapping properly on modern hardware anyway.	2016-11-21 09:04:56 +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
Ian Curtis	2f49012786	change scroll fog logic to parse the lower priority viewports first	2016-10-09 18:10:57 +00:00
Ian Curtis	f0a15febd1	implement scroll fog, fixes a tonne of missing fx	2016-10-09 16:34:12 +00:00
Ian Curtis	ef11990d19	Parse out scrollfog value used for blending over the 2d background.	2016-10-08 15:41:16 +00:00
Ian Curtis	33e795de9b	Fix scenes with missing fog in ocean hunter. The game was passing negative fog densities. The sign seems to be ignored by the model 3.	2016-10-08 15:15:25 +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
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	732bff2769	disable spot light if the extent is zero	2016-06-29 20:53:19 +00:00
Ian Curtis	efa7776871	parse some unimplemented spot light values from viewport	2016-06-27 17:35:27 +00:00
Ian Curtis	d058a29ac8	stencil translucent non textured polys	2016-06-19 23:33:06 +00:00
Ian Curtis	85c4d85562	refactor	2016-06-19 21:43:09 +00:00
Ian Curtis	c2b1db11f8	Cull geometry based on the culling distances in the nodes. Should give some sort of speedup on lower end pcs where the CPU is predominantly the bottle neck.	2016-06-16 20:05:29 +00:00
Ian Curtis	d799c63b1a	cache bound texture	2016-06-10 11:29:20 +00:00
Ian Curtis	48a79a8f14	cleaning	2016-06-10 10:18:47 +00:00
Ian Curtis	8440bc7f03	support negative exponent	2016-06-03 09:33:46 +00:00
Ian Curtis	5081ee99dc	Add code to convert the 16bit float format used by the hardware back into float 754 format. 16bit floats are used for the culling radiuses in the nodes.	2016-06-03 00:01:34 +00:00
Ian Curtis	9bc1fbf0cb	remove dead code	2016-06-02 21:26:50 +00:00
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
Ian Curtis	c4dc96ef71	simplify list code	2016-04-17 00:00:51 +00:00
Ian Curtis	f52cb3c491	tweak frustum planes	2016-04-08 23:29:31 +00:00
Bart Trzynadlowski	22907b033f	Fixes for non-Windows builds: Makefile updated and fixed header files in Vec.cpp	2016-04-05 04:30:52 +00:00
Ian Curtis	5f68544641	revert viewport code	2016-04-04 10:50:05 +00:00
Ian Curtis	ecea4cad56	change tex format 4	2016-04-04 10:21:34 +00:00
Bart Trzynadlowski	1d4f5c871d	Fixed Types.h include	2016-04-04 03:43:55 +00:00
Ian Curtis	d155fbd6e4	rgb values were swapped for paletted colours	2016-04-03 23:21:50 +00:00
Ian Curtis	3bc2794b0a	Use the correct texture enable bit	2016-04-03 16:10:40 +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	7e7847bc83	Allow asymmetric projection matrices. Fixes a bunch of missing effects and bad camera angles in harley.	2016-03-31 09:27:42 +00:00
Ian Curtis	aee89390ba	add LOD table data. Maybe we can get clipping planes out of these	2016-03-28 20:11:46 +00:00
Ian Curtis	e79b241a49	properly mark dynamic meshes as such	2016-03-28 19:58:36 +00:00
Ian Curtis	e1278f4451	allow 8 bit mono textures to be contour textures, fixes a bunch of missing transparency in harley la riders	2016-03-27 08:39:40 +00:00
Ian Curtis	ffaed8ae32	clear the rom mesh buffer	2016-03-26 22:48:51 +00:00
Ian Curtis	4992e59673	Cache rom models, for better performance.	2016-03-26 22:44:26 +00:00
Ian Curtis	8488f22ac5		2016-03-24 13:26:28 +00:00
Ian Curtis	0327db246f	WIP	2016-03-24 13:17:17 +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
Ian Curtis	e7eb912eaa	add maths functions	2016-03-22 13:47:28 +00:00
Ian Curtis	93f6b01e0b	Update project to vs 2013. Clean compile warnings	2016-03-22 12:30:23 +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