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

Age	Commit message (Collapse)	Author
2023-01-21	til_stream: teardown pipes when the driving_tap's owner matches	Vito Caputo
	The driving tap's owner and pipe's owner are decoupled. When tearing down an owner from a stream, any pipes its taps are driving should also just go away. Otherwise its taps could linger on pipes it doesn't own, which would be a UAF bug. If the pipe is still needed, it'll just get recreated by another tap. So there's a small perf hit, but this shouldn't be a continuos kind of occurrence.
2023-01-21	til_stream: minor cosmetic naming/comments fixes	Vito Caputo
	Some clarifications
2023-01-21	til_stream: add til_stream_pipe_set_driving_tap()	Vito Caputo

2023-01-21	til_{tap,stream}: introduce til_tap_t.inactive	Vito Caputo
	When a driving tap becomes inactive, til_stream_tap() should be able to notice and replace the driver. An example driving tap becoming inactive would be a GNU Rocket track that once had keys in it, but then had them all deleted. This should set the inactive flag so the tap's automation can take over. This gives the user at the Rocket editor the ability to both take over from the tap automation and surrender control back, by populating vs. emptying the respective track.
2023-01-21	til_stream: introduce stream iterator et al	Vito Caputo
	In order to implement something like a rocket module there needs to be a way to iterate the pipes in the stream, and take owernship of them when not already owned by rocket. The way rocket's API works is you lookup tracks by name at runtime. The rocket module will be a meta module that calls into another module for rendering, arbitrarily configured via a rocket setting a la checkers::fill_module. So it won't be until the underlying modules do some rendering that their taps get their respective pipes established in the stream. Then the rocket module can look at all the pipes and for any it doesn't own yet, it can get the tracks for those names and take ownership while stowing the track handle in owner_foo for the pipe. While iterating all the pipes, the pipes already owned will have the tracks readily available which can produce the values to stick in the tap. Something like that anyways, the til_stream_t api changes in this commit are all preparatory for a rocket module.
2023-01-21	til_stream: comment fix, and assert/error on mismatch	Vito Caputo
	Just clarify some verbiage, and actually assert type+n_elems match. Note mismatch also fallsthrough to an -EINVAL just in case asserts() have been compiled out (-DNDEBUG).
2023-01-21	til_stream: add a second void* to til_stream_pipe_t	Vito Caputo
	It seems likely that pipe owners will need not only a way to differentiate themselves via the owner pointer, but also somewhere to register a pipe-specific reference. There probably needs to be a result pointer added for storing the owner_foo when the owner taps, so the owner can make use of it.
2023-01-11	til_{stream,tap}: add GPL headers	Vito Caputo
	Just some banal paperwork...
2023-01-11	til_stream: first stab at implementing til_stream_t	Vito Caputo
	Until now there's just been a forward declared type for til_fb_fragment_t.stream's type, and it's been completely unused. The purpose of the stream is to provide a continous inter-frame object where information can be stored pertaining to the stream of frames. Right now, that information is limited to emergent "pipes" formed by using taps against a given stream. Taps at new paths in the stream become added as pipes for those paths, with the responsible tap hooked in as the driving tap. Taps at existing paths become diverted to the driving taps, enabling potential for external drivers for tapped variables. This commit only adds the implementation, nothing is actually using it yet.