ps1bsptools

Author	SHA1	Message	Date
Nico de Poel	f5ffefce4c	Additional debugging output	3 years ago
Nico de Poel	64865249a4	Removed the baselight addition during light sampling, as that was actually the cause of weird lighting bugs in some areas. This will probably be relevant again when implementing animated lights, but not right now.	3 years ago
Nico de Poel	727c5bf724	Tweaked light sampling a bit more, should be more accurate to Quake's original implementation now (though it hardly makes any difference in practice)	3 years ago
Nico de Poel	0a077b426c	Reworked lightmap sampling using a lightmap space transform and correctly rounding values, using the Quake source for reference. Finally fixes a bunch of lingering lighting artifacts.	3 years ago
Nico de Poel	c6a8abbb7b	Made the texture space transform available outside of Tessellator and used it to generate some more Face bounds data for later use.	3 years ago
Nico de Poel	fc281251ea	Overhaul of geometry conversion: - Faces are now tessellated into one or more polygons, based on UV coordinates and texture tiling - Polygons have their own vertex index list and light/UV values per vertex - Lighting is sampled per polygon vertex, allowing for more light samples in general and more refined lighting - There are still problems with reconstruction of vertices for sloped surfaces, but this is enough of a result for a checkpoint commit	3 years ago
Nico de Poel	568f2450eb	Added a new lighting sampler to take advantage of the improved lightmap indexing: use a pseudo-random jitter pattern to take multiple light samples in an area around the sample point, from all surrounding faces at a shallow angle. This further smooths out the lighting and reduces artifacts, while also better representing each face's entire lightmap.	3 years ago
Nico de Poel	fb3d1ac6a1	Upgraded dot product and cross product-related functions to doubles, to improve accuracy of various calculations	3 years ago
Nico de Poel	161ef0acee	Improved lightmap sampling accuracy. The generated UVs now more closely match what Quake is doing, we can reject invalid UVs, and we're getting less false rejects of valid faces to sample from.	3 years ago
Nico de Poel	5137fe0a15	A bit of cleanup and moved the facesWithPoint function to world_t, for easier reuse	3 years ago
Nico de Poel	e0373524ca	Further improvement to lightmapping system: - Added a function to find all faces that contain a given point. This is useful for both sampling lightmaps, and sampling textures later. - New face vertex lighting function simply collects all faces for a given vertex, and samples all relevant lightmaps for it - A whole bunch more experiments that were more complex and that went nowhere - Ironically all this doesn't really change the current quality of the lighting but hey, that's a result too. And this added code will prove useful soon enough.	3 years ago
Nico de Poel	bf3bf810f6	Added computation of face area by projecting its vertices onto its plane and then generating a bounding box. Will be used for determining tessellation subdivisions.	3 years ago
Nico de Poel	219fc6db32	Implemented an alternative method for computing lighting per face vertex, one that's simpler, faster and that produces better results. Still not quite perfect yet but about where I want it to be for now.	3 years ago
Nico de Poel	e65ce7b673	First attempt at calculating lighting per face-vertex with smoothing based on the angle between faces, using edge adjacency to determine neighbouring faces. Not quite right yet but it does get a result, and it's given me a good idea of what the correct solution for this should be.	3 years ago

14 Commits (f5ffefce4c32acf8d067a9672e62350ecf97e42a)