gm-matthew
9f66fcaac7
Floating point reversed z-buffer and new clipping code
...
Also always draw nodes with culling disabled even if they test as being outside the visible frustum
2023-12-22 02:00:47 +00:00
Ian Curtis
a214c6dae8
Prior scroll fog logic was nearly correct. For scroll fogging to draw it needs either a start value or a fog density value, but these can come from a different viewport if they have the same colour fog set. This fixes the credits in vf3 which sets scroll fog, but it never draws on the original hardware.
...
For a long time we've had bug reports that in vf3 the background in the Dural levels was the wrong colour, it should have been much darker. We thought it was again missing scroll fog, but gm_mathew worked out it was actually coming from the fogAmbient paramater. Not only does it darken the fog, but it also has an effect on the 2d background from the tilegen, similar to scroll fog. This also fixes the sky in lemans24.
2023-10-22 21:07:35 +01:00
Ian Curtis
6595b9320e
Rewrite the renderer a bit to spit out the finished graphics from the 3d chip on separate buffers. One buffer is for opaque pixels, and 2 more for translucent pixels. Before the frame was composited on the back buffer, which meant the tilegen had to have been drawn first. This way the images are now totally independant of the tilegen chip so can be drawn as soon as the register write 0xC is written to the tilegen.
...
Some games update the tilegen after the ping_ping bit has flipped at 66% of the frame, so we need to split the tilegen drawing up into two stages to get some effects to work. So having the tilegen draw independantly of the 3d chip can make this happen.
2023-10-14 20:05:00 +01:00
Ian Curtis
d656643087
gm_mathew worked out that the camera flashes in sega rally 2 have the 'reset-matrix' attribute set inside the culling nodes, which was unsupported until now because we never found any games to have used this bit. The reset matrix is a bit strange, I would assume it would just reset the matrix back to identity, instead it seems to just reset the rotation back to identity whilst preserving the scale/position.
2023-09-27 16:33:53 +01:00
Ian Curtis
40c8259130
Rewrite the whole project for GL4+. I figured if we removed the limitation of a legacy rendering API we could improve things a bit. With GL4+ we can do unsigned integer math in the shaders. This allows us to upload a direct copy of the real3d texture sheet, and texture directly from this memory given the x/y pos and type. This massively simplifies the binding and invalidation code. Also the crazy corner cases will work because it essentially works the same way as the original hardware.
...
The standard triangle render requires gl 4.1 core, so should work on mac. The quad renderer runs on 4.5 core. The legacy renderer should still work, and when enabled a regular opengl context will be created, which allows functions marked depreciated in the core profiles to still work. This will only work in windows/linux I think. Apple doesn't support this.
A GL 4.1 GPU is now the min required spec. Sorry if you have an OLDER gpu. GL 4.1 is over 12 years old now.
This is a big update so I apologise in advance if I accidently broke something :]
2022-11-07 21:33:01 +00:00
toxieainc
22ffb5cc19
Harmless math warning fixes. map->unordered_map in CNew3D::CacheModel. Avoid general aliasing problems (using bit_cast or the recommended/optimized-away memcpy).
2022-10-03 17:59:59 -07:00
Ian Curtis
0ef90899e1
Double buffer the line of sight values. Should allow the correct values to be returned if GPU threading is enabled.
2022-01-02 12:48:09 +00:00
Ian Curtis
ba917aca6d
Update glew version
2020-07-31 19:18:51 +00:00
Ian Curtis
06688de5fc
Really should cull against 5 frustum planes.
2019-11-15 20:00:25 +00:00
Ian Curtis
bf4d725970
Smooth texture repeat makes no sense for alpha/contour textures with pixel dilate. HW seems to treat them as non smooth anyway. Also implement some line of sight stuff, used by Scud. Really need to check the threading/synchronisation of the register reads but it basically works.
2018-10-19 20:59:46 +00:00
Ian Curtis
3eeec35e7c
Correctly emulate the real3d pro-1000 texture modes in our shader.
2018-10-13 13:29:45 +00:00
Ian Curtis
b5f9ad9651
Quad rendering engine. Set QuadRendering = 1 in the ini file to use, or -quad-rendering at the end of the command line to use.
2018-09-13 12:50:34 +00:00
Ian Curtis
e4f5f0bcaf
Sega bass fishing is starting some off the meshes with a shared vertex. Without having a previous vertex to share with, the values were just uninitialised and junk. The hardware itself seems to hold the value from the previous mesh, and sega bass fishing relies on this undefined behaviour to function correctly. Storing the cached vertices as member variables instead of locally to the function means it holds the values from the last mesh, and uses those values instead of random garbage.
2018-09-02 21:36:24 +00:00
Ian Curtis
c7ffd0a808
Draw transparent polys to separate layers and composite at the end. This solves a tonne of transparency errors we had been battling with for a long time. The model3 is strange in the fact it only supports a max of two translucent overlapped polys. They are not blended into the frame normally. Doing this means the topmost translucent polys only are visible in the scene, the equivalent of doing a depth pass first, but without the added cost.
2018-06-16 21:31:29 +00:00
Bart Trzynadlowski
3f9b1b76e5
Added a stretch mode (-stretch) and modified new renderer's viewport code (hopefully correctly) to handle aspect ratio correction and widening the way the legacy one does.
2018-05-03 03:46:44 +00:00
Ian Curtis
8266eecabb
Parse out line of sight position. Only known to be used by scud.
2018-01-15 21:27:21 +00:00
Ian Curtis
eb798ed15e
Star wars is the only game to pass unsigned fixed shaded values (per vertex brightness) to the renderer. Originally we thought that the specular flag would turn on unsigned values since it's the only game to set specular with these polys, but this logic turned out to be incorrect. The JTAG interface seems to config the GPU to turn on this functionality. (Harry Tuttle)
2017-10-05 19:15:00 +00:00
Ian Curtis
2786d95795
add interface for sun clamp
2017-09-02 14:54:16 +00:00
Ian Curtis
0efd4dac39
Finish fixed shading for 2.0 hardware. I'm pretty sure it actually works identically to step 1.5 hardware. The oddball is LA machine guns where the viewport ambient doesn't seem to effect the brightness. But the ambient works differently in this game because it uses the unclamped light model. Still need to investigate if the diffuse factor effects fixed shading.
2017-08-15 23:21:57 +00:00
Ian Curtis
c12e4c3215
Fixed shading (per vertex poly colours) on step 1.5 hardware have the viewport ambient value added to them. This fixes various shading on scud. To do this had to switch the maths to the vertex shader.
2017-08-14 09:14:06 +00:00
Bart Trzynadlowski
a315627401
Added support for loading shaders from files for new engine and tile renderer. Changed help text to reflect new engine being default.
2017-08-11 00:41:10 +00:00
Ian Curtis
b00315b072
Revert previous fixed shading changes. Implement new logic for fixed shading on step 1.5 hardware based upon Harry's findings.
2017-06-20 20:13:42 +00:00
Ian Curtis
9b226ed478
parse out some culling node values
2017-04-17 10:40:07 +00:00
Bart Trzynadlowski
f34e25dfc7
Massive internal change: removed CConfig object and replaced it with a hierarchical config object system (Util::Config::Node). Games are now defined in an XML file. Hopefully I didn't break too many things :/
2017-03-27 03:19:15 +00:00
Ian Curtis
ff624afb4d
The mipmap data in some games seems to being sent behind the base textures, and when the base textures are bound and created the mipmap chain is not yet valid in memory. To fix this, we invalidate the base textures, when the mipmap chain is updated.
2017-03-25 00:06:24 +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
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
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
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
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
f0a15febd1
implement scroll fog, fixes a tonne of missing fx
2016-10-09 16:34:12 +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
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
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
Ian Curtis
ff8d311dcc
support colour table pointer
2016-05-18 23:06:41 +00:00
Ian Curtis
43add90d2f
Fix bad texture seems
2016-05-09 16:26:34 +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
58d187e59a
parse viewports in normal order
2016-04-19 22:05:12 +00:00
Ian Curtis
057ee94210
simplify
2016-04-18 14:06:10 +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
4992e59673
Cache rom models, for better performance.
2016-03-26 22:44:26 +00:00
Ian Curtis
0327db246f
WIP
2016-03-24 13:17:17 +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
Bart Trzynadlowski
34301e97e1
Adding new 3D engine by Ian Curtis. Old engine moved to Graphics/Legacy3D/.
2016-03-21 04:10:14 +00:00
