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

Age	Commit message (Collapse)	Author
2019-11-23	rototiller: pass num_cpus to .create_context()	Vito Caputo
	Back in the day, there was no {create,destroy}_context(), so passing num_cpus to just prepare_frame made sense. Modules then would implicitly initialize themselves on the first prepare_frame() call using a static initialized variable. Since then things have been decomposed a bit for more sophisticated (and cleaner) modules. It can be necessary to allocate per-cpu data structures and the natural place to do that is @ create_context(). So this commit wires that up. A later commit will probably have to plumb a "current cpu" identifier into the render_fragment() function. Because a per-cpu data structure isn't particularly useful if you can't easily address it from within your execution context.
2017-09-14	fb: s/fb_fragment_divide_single/fb_fragment_slice_single/	Vito Caputo
	Mechanical cosmetic change
2017-09-14	*: use fragment generator	Vito Caputo
	Rather than laying out all fragments in a frame up-front in ray_module_t.prepare_frame(), return a fragment generator (rototiller_fragmenter_t) which produces the numbered fragment as needed. This removes complexity from the serially-executed prepare_frame() and allows the individual fragments to be computed in parallel by the different threads. It also eliminates the need for a fragments array in the rototiller_frame_t, indeed rototiller_frame_t is eliminated altogether.
2017-04-27	sparkler: enable rudimentary threaded rendering	Vito Caputo
	This moves most of the particle system maintenance into the serially executed sparkler_prepare_frame(), divides the frame into ncpus fragments, and leaves the draw to occur concurrently. The drawing must still currently process all particles and simply skips drawing those falling outside the fragment. Moving more of the computation out of prepare_frame() and into render_fragment() is left for future improvements, as it's a bit complex to do gainfully.
2017-04-26	sparkler: utilize context struct for module state	Vito Caputo

2017-04-22	*: add module context machinery	Vito Caputo
	introduces create_context() and destroy_context() methods, and adds a 'void *context' first parameter to the module methods. If a module doesn't supply create_context() then NULL is simply passed around as the context, so trivial modules can continue to only implement render_fragment(). A subsequent commit will update the modules to encapsulate their global state in module-specific contexts.
2017-04-22	*: /render/render_fragment/ in rototiller_module_t	Vito Caputo
	Adding more context to the name in anticipation of adding a prepare_frame() method to the module struct.
2017-04-21	*: s/renderer/module/g	Vito Caputo
	Make consistent with the source directory structure naming.
2017-02-03	*: use fb_fragment_zero() instead of memset()	Vito Caputo

2017-01-18	*: move source into src/ subdir	Vito Caputo
	Restoring some organizational sanity since adopting autotools.