Ian Curtis
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5709ee2659
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Sometime ago I managed to work out that specular on the model3 is not real specular, and really is just an extension of diffuse lighting. But attempts were derailed by corner cases and the fact we were not handling the normals correctly. Anyway Harry managed to successfully come up with an algorithm, and coefficients that give an almost perfect match to specular on the model3, based soley on observations from video footage! He also worked out that the lighting on hardware 1.5 onwards appears to be unclamped (ie greater than 1). This quite radically changes the brightness of some of the games, but much better matches the original hardware.
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2017-08-09 16:56:56 +00:00 |
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Ian Curtis
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3fc28159eb
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Add the unclamped light model we know exists to the shaders.
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2017-08-03 10:41:18 +00:00 |
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Ian Curtis
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9aa3f13777
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We were force normalising the result of matrix * normal, which looked correct in most cases. But this didn't preserve the scaling of the matrix, or the scaling of the model normals which resulted in many over bright areas. On it's own this generally worked, but games like Star Wars looked quite broken. Harry correctly figured out if you scale these normals by the scaling value that is sometimes present in the culling nodes the lighting looks correct. Still more work to do to correctly figure out the model3's lighting model.
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2017-07-29 16:30:30 +00:00 |
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Ian Curtis
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a9b49c1676
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Implement unclamped light model based upon Harry's findings. Unknown how this is turned on/off.
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2017-07-22 17:15:14 +00:00 |
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Ian Curtis
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edfb521a9b
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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.
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2017-04-05 17:57:38 +00:00 |
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Ian Curtis
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f0e00c5dc7
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Rewrite the spot light code, and implement the missing fog logic. (HarryTuttle)
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2017-04-02 21:03:59 +00:00 |
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Ian Curtis
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69eac95846
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Replace glsl 3 function. Apparently this doesn't work on OS X.
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2017-03-28 20:24:44 +00:00 |
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Ian Curtis
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2c23268d88
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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.
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2016-12-09 14:13:46 +00:00 |
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Ian Curtis
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2086b1c9af
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Stencil layered polys, fixes shadow z fighting in some of the games. Other games maybe using stipple alpha (yuck), not sure yet.
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2016-05-27 19:30:40 +00:00 |
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Ian Curtis
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bc08276d60
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preliminary specular
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2016-05-15 16:24:49 +00:00 |
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Ian Curtis
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c545b9fd85
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preliminary microtexture
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2016-05-04 00:35:07 +00:00 |
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Ian Curtis
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f031e5d095
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finish front/back face culling code based on matrix determinant. Optimised opengl to avoid redundant state changes.
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2016-03-22 23:39:59 +00:00 |
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Bart Trzynadlowski
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34301e97e1
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Adding new 3D engine by Ian Curtis. Old engine moved to Graphics/Legacy3D/.
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2016-03-21 04:10:14 +00:00 |
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