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

Age	Commit message (Collapse)	Author
2017-02-12	ray: improve camera movement	Vito Caputo
	Make the camera orbit around the origin at a varying radius, with kept aimed facing the origin, with some vertical sweep+tilt thrown in.
2017-02-12	julia: add a morphing Julia set renderer	Vito Caputo
	This is unoptimized, with a palette slapped together in vim, but still pretty neat!
2017-02-12	ray: fixup ray_object_plane_intersects_ray() bug	Vito Caputo
	We should only consider dot products > 0 as intersected, or >= something very close to 0 (epsilon). As-is resulted in planes moving with camera movement along the plane normal axis. Also fixes plane distance to be non-negative in the current scene.
2017-02-12	ray: remove vestigial stdio.h include	Vito Caputo
	Leftover from debugging presumably
2017-02-10	ray: implement all orders in ray_euler_basis()	Vito Caputo
	Originally I only implemented pitch->yaw->roll, and being new to all this didn't fully appreciate the limitation that resulted in. This adds all six permutations of pitch/yaw/roll, the scene must specify the desired order when setting up the camera with the euler angles, see the enum in ray_euler.h.
2017-02-09	ray: remove redundant recursion depth increment	Vito Caputo
	trace_ray() bumps the depth, the reflection ray trace_ray() call just needs to propagate the depth variable not advance it as well. This was probably vestigial from early development and never got taken out. This does mean more reflections now, and correspondingly slower rendering, but it at least makes MAX_RECURSION_DEPTH accurate. The define can be changed if the performance is too bad.
2017-02-09	ray: fix mistake in ray:sphere intersection math	Vito Caputo

2017-02-08	Consolidate fb_fragment_t interactions	Vito Caputo
	sparkler and stars both cleared fragments and drew individual pixels into fragments, add that functionality to fb.h and cleanup sparkler and stars accordingly.
2017-02-07	plasma: add a plasma renderer	Vito Caputo

2017-02-03	*: use fb_fragment_zero() instead of memset()	Vito Caputo

2017-02-03	stars: use fb_fragment_put_pixel_unchecked()	Vito Caputo
	drop draw_pixel() duplication
2017-02-03	sparkler: drop draw.h	Vito Caputo

2017-02-03	sparkler: use fb.h put_pixel helpers	Vito Caputo
	discards draw_pixel(), introduces helpers.h and a convenience function for bounds checking and oob extermination. Move makergb to helpers.h, draw.h gets removed in a later commit.
2017-02-03	rototiller: extricate draw_pixel() bounds checking	Vito Caputo
	If a z-buffer is added these checks will need to be done independent from and prior to drawing. Also it's silly to makergb() pixels which can't be drawn.
2017-01-18	autotools: s#../../#@top_srcdir@/src#	Vito Caputo
	The relative path broke out-of-tree builds. Previously the following: $ mkdir /tmp/foo $ cd /tmp/foo $ ~/src/rototiller/configure $ make Would fail to compile unable to locate the headers in ~/rototiller/src This fixes it.
2017-01-18	*: move source into src/ subdir	Vito Caputo
	Restoring some organizational sanity since adopting autotools.