rototiller/.git - Collection of software-rendered graphics hacks supporting libdrm and SDL2

Age	Commit message (Collapse)	Author
2023-06-13	*: smattering of random small fixes to silence -Wall	Vito Caputo
	I thought the build was already using -Wall but that seems to not be the case, maybe got lost somewhere along the line or messed up in configure.ac After forcing a build with -Wall -Werror, these showed up. Fixed up in the obvious way, nothing too scary.
2022-07-20	libs/din: pass seed to din_new()	Vito Caputo
	also update call sites in modules/{meta2d,swab} accordingly
2022-04-28	libs/din: lose the asserts in dotgradient()	Vito Caputo
	This just slows things down, and now that the code is mature enough to never trigger these asserts just get rid of them.
2022-04-28	libs/din: minor optimization in clamp()	Vito Caputo
	short-circuit by directly returning bound when exceeded
2022-04-28	libs/din: premultiply din->width * din->height	Vito Caputo
	dotgradient() is very hot and needs this result when indexing din->grid[]. Since it doesn't change for a given din instance, just cache the result @ din_new().
2019-12-18	libs/din: fix scaling overflow, add asserts	Vito Caputo
	Phil reported a crash in swab, illuminating an overflow in how the unit cube was being scaled to the noise field dimensions. Added some asserts enforcing critical assumptions as well, though it will probably cost some FPS in din-heavy modules like swab.
2019-11-25	din: scale result	Vito Caputo
	I'd like the output to fill the range -1..+1, but it's not doing that and I'm uncertain on what exactly the scaling factor should be here. In one reference a factor of 1/sqrt(.75) is specified, but in my tests that doesn't seem to quite fill the range but it doesn't seem to blow it out so it seems safe for now.
2019-11-25	din: drop .f from integer additions in din()	Vito Caputo

2019-11-25	din: don't include v3f.h in din.h	Vito Caputo
	This requires a forward declaration of v3f_t and changing din() to take a v3f_t *. The swab module needed updating to supply a pointer type and a v3f_t definition. This is being done so din.h users can have their own v3f implementations. I might consolidate all the duplicated vector code scattered throughout the libs and modules, but for now I'm carrying on with the original intention of having modules be largely self-contained. Though the introduction of libs like ray and din has certainly violated that a bit already.
2019-11-18	libs/din: add a perlin noise implementation	Vito Caputo
	This is a 3D noise field addressed as a unit cube. The caller supplies the resolution of the noise field in three dimensions. I've just pulled in my v3f.h here, but it probably makes sense to later on move vector headers into libs/ and share them. Later. It's called din as in noise, because it's shorter than perlin and noise.