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2023-01-22modules/drizzle: add taps for viscosity,rainfallVito Caputo
Just some obvious taps... Note the actual usable range for viscosity is quite small, like no greater than .05 really works. There still needs to be some way to describe bounds on the taps, that or normalizing things to always be 0-1 or -1..+1 kind of thing, and expecting the modules or the tap api to map those to the sane ranges. Just leave everything raw for now, wiring up the taps at least opens up experimentation and getting a feel for what makes most sense.
2023-01-22modules/blinds: add taps for T,step,countVito Caputo
Part of me wants to give the blinds arbitrary angle instead of the vert/horiz options. But part of the beauty of blinds is the jaggy-free aliasing-free sharp edges by virtue of always being orthonormal using whole pixels. Maybe in the future there could be a orientation setting where you pick horiz/vert/angular. Then only when angular does it get a theta tap and use angled blinds with anti-aliased imperfect edges...
2023-01-21modules/rocket: implement GNU Rocket integrationVito Caputo
This adds a rudimentary but functional rocket module for sequencing "tapped" variables in rototiller modules according to a timeline via GNU Rocket editors. Currently this only supports a single seq_module= as a setting which will be used for rendering. Any tapped variables present in the nested modules under seq_module will be available for sequencing, and should automatically appear in a connected rocket editor. If you specify connect=off then rocket sync tracks will be read from the filesystem if present. It's a bit clumsy as-is due to how the GNU Rocket library handles this currently. There's a "base" label concept for the virtual rocket device, and the tracks are intended to be files in a directory named using that base= setting. The way you create those track files is by triggering a remote export from the editor while connected. The location of the directory is relative to the cwd of the rototiller process, and you can't specify absolute paths as the base= setting to be explicit about where things go. The setting isn't really a path, as that's not what the library wants it to be. It's an area in need of improvement. In any case, as long as you start with the same base= setting, from the same CWD, as when you did the remote export, you can re-run with connect=off and the exported tracks will be used automagically and things should replay without the editor connected. If you start with connect=on, which is the default, you need to have the editor already running. Otherwise the rocket module will fail @ context create, and you'll get a confusing error about being unable to allocate memory. This is just for now, the context create needs to start returning an errno instead of just the context pointer so the error messages can be more informative now that context create may be doing complicated things like connecting to sockets. Another thing to improve is probably having the module just reconnect periodically if connect=on but it failed @ context create. It could just start anyways and not fail the context create at all there, and just start working once you get the editor online. That'd be a better user experience. This is a good first step regardless...
2023-01-21modules/rocket: preliminary rocket moduleVito Caputo
This just stubs out a rocket meta module that renders with another module. Future commits will integrate GNU Rocket here. When recursive settings formally lands you'll be able to nest as much settings content as necessary for the underlying module used, as part of the rocket settings. That should enable describing stuff like complex compose scenarios for rocket to sequence.
2023-01-21til_stream: add a second void* to til_stream_pipe_tVito 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.
2023-01-21til_tap: introduce til_tap_t.ownerVito Caputo
We need a way to identify owners of taps when cleaning up their containing contexts, especially once they're hanging off streams.
2023-01-20til: pass module to .context_create()/til_module_context_new()Vito Caputo
Let's make it so til_module_context_t as returned from til_module_context_new() can immediately be freed via til_module_context_free(). Previously it was only after the context propagated out to til_module_context_create() that it could be freed that way, as that was where the module member was being assigned. With this change, and wiring up the module pointer into til_module_t.create_context() as well for convenient providing to til_module_context_new(), til_module_t.create_context() error paths can easily cleanup via `return til_module_context_free()` But this does require the til_module_t.destroy_context() be able to safely handle partially constructed contexts, since the mid-create failure freeing won't necessarily have all the members initialized. There will probably be some NULL derefs to fix up, but at least the contexts are zero-initialized @ new.
2023-01-12modules/compose: fix segfault introduced by 83e41dVito Caputo
It was assumed (n_modules - n_overlayable) would give the number of non-overlayable modules appropriate as base layers. But with the skipping of hermetic and experimental modules the base_idx could be out of reach leaving layers NULL after the loop, which will segfault later when strlen() assumes it's non-NULL. This commit does the simple thing and also counts the unusable modules to subtract from those eligible for base layers along with n_overlayable.
2023-01-11modules/montage: omit experimental and hermetic modulesVito Caputo
As with the other composite modules, if --experimental happens this will need adjustment to honor it. For now let's just prevent things from breaking when those modules start appearing.
2023-01-11modules/compose: omit experimental and hermetic modulesVito Caputo
This only omits the modules from the random layers Note the texture_values list is enumerated in compose_setup, so there's no corresponding change needed there. It might make sense to change that to a runtime-discovered list though, I think that was done in the pre-flags era.
2023-01-11modules/rtv: skip hermetic/experimental modules for "all"Vito Caputo
This allows explicit listing of such modules as channels, while protecting the automagic/defaults scenario. If there's a future --experimental flag or such added, then the TIL_MODULE_EXPERIMENTAL check will have to become conditional on it.
2023-01-11* turn til_fb_fragment_t.stream into a discrete parameterVito Caputo
This was mostly done out of convenience at the expense of turning the fragment struct into more of a junk drawer. But properly cleaning up owned stream pipes on context destroy makes the inappropriateness of being part of til_fb_fragment_t glaringly apparent. Now the stream is just a separate thing passed to context create, with a reference kept in the context for use throughout. Cleanup of the owned pipes on the stream supplied to context create is automagic when the context gets destroyed. Note that despite there being a stream in the module context, the stream to use is still supplied to all the rendering family functions (prepare/render/finish) and it's the passed-in stream which should be used by these functions. This is done to support the possibility of switching out the stream frame-to-frame, which may be interesting. Imagine doing things like a latent stream and a future stream and switching between them on the fly for instance. If there's a sequencing composite module, it could flip between multiple sets of tracks or jump around multiple streams with the visuals immediately flipping accordingly. This should fix the --print-pipes crashing issues caused by lack of cleanup when contexts were removed (like rtv does so often).
2023-01-11src/modules/{stars,plato}: stream tapped variablesVito Caputo
Now that til_stream_t is implemented, let's wire up the taps. Note that nothing actually creates the stream and puts it in the fragment yet, so stream is still always NULL for these effectively turning this into a NOP.
2023-01-10*: introduce paths for module contextsVito Caputo
There needs to be a way to address module context instances by name externally, in a manner complementary to settings and taps. This commit adds a string-based path to til_module_context_t, and modifies til_module_create_context() to accept a parent path which is then concatenated with the name of the module to produce the module instance's new path. The name separator used in the paths is '/' just like filesystem paths, but these paths have no relationship to filesystems or files. The root module context creation in rototiller's main simply passes "" as the parent path, resulting in a "/" root as one would expect. There are some obvious complications introduced here however: - checkers in particular creates a context per cpu, simply using the same seed and setup to try make the contexts identical at the same ticks value. With this commit I'm simply passing the incoming path as the parent for creating those contexts, but it's unclear to me if that will work OK. With an eye towards taps deriving their parent path from the context path, I guess these taps would all get the same parent and hash to the same value despite being duplicated. Maybe it Just Works, but one thing is clear - there won't be any way to address the per-cpu taps as-is. Maybe that's desirable though, there's probably not much use in trying to control the taps at the CPU granularity. - when the recursive settings stuff lands, it should bring along the ability to explicitly name settings blocks. Those names should override the module name in constructing the path. I've noted as such in the code. - these paths probably need to be hashed @ initialization time so there needs to be a hash function added to til, and a hash value accompanying the name in the module context. It'd be dumb to keep recomputing the hash when these paths get used for hash table lookups multiple times per frame... there's probably more I'm forgetting right now, but this seems like a good first step. fixup root path
2023-01-10modules/stars: add taps for some varsVito Caputo
Wiring up some minimal taps to see how this will work... This only initializes the taps and changes the render to access the rates indirectly via the tapped pointers.
2023-01-10modules/plato: add taps for {spin,orbit}_rate varsVito Caputo
Wiring up some minimal taps to see how this will work... This only initializes the taps and changes the render to access the rates indirectly via the tapped pointers.
2022-11-12modules/compose: more robust texture preservationVito Caputo
The existing code only really cared about preserving the incoming texture on behalf of the caller when the compose code itself was doing something with the texture. But there's scenarios where the underlying module being rendered (or its descendants) might play with the texture, and in such a situation when the outer compose wasn't involving a texture it'd let the descandants installed texture leak out to the callers making the texture apply more than one'd expect. Arguably none of the modules should be missing restoration of the incoming texture after installing+rendering with their own. But with this change in place, compose will clean up after nested modules leaking their texture up.
2022-11-09modules/strobe: force flash even at low FPSPhilip J Freeman
At low framerates, the strobe module timer can expire from frame to frame. This has the effect of appearing "always on." This condition was obscuring output in compose mode. #BirdwalkCommit #WinterStormWarning
2022-09-05modules/roto: move tables init to context createVito Caputo
Mechanical rearrangement, but ultimately there probably needs to be an initialize function added to til_module_t. With all the threading chaos going on, this approach to implicit initialization with a static flag is racy without using atomics. For now it's probably marginally better to do this in context create vs. prepare frame. Context creates *tend* to happen in single-threaded phases of execution, and infrequently. Prepare frame is a serialized phase of the rendering for a given context, but there can be many contexts in-flight simultaneously now with all the forms of compositing happening, sometimes from multiple threads. So that assumption no longer holds...
2022-09-05modules/blinds: use til_ticks_to_rads(ticks)Vito Caputo
This gets rid of the static accumulator hack used for the blinds phase.
2022-09-04modules/strobe: add rudimentary strobe light moduleVito Caputo
After reading about the Dreamachine[0], I wanted to experience this phenomenon. The javascript-based web implementations struggled to hold a steady 10Hz rate and would flicker like crazy, so here we are. Only setting right now is period=float_seconds, defaults to .1 for 10Hz. One limitation in the current implementation is when the frame rate can't keep up with the period the strobe will just stick on without ever going off, because the period will always be expired. There should probably be a setting to force turning off for at least one frame when it can't keep up. [0] https://en.wikipedia.org/wiki/Dreamachine
2022-09-04til: fixup til_fb_fragment_t.texture fragmentingVito Caputo
Until now when fragmenting with a texture present the texture pointer was simply copied through to the new logical fragment. The problem with that is when sampling pixels from the texture in a nested frame scenario, the locations didn't align with the placement of the logical fragment. With this change when the incoming fragment has a texture, the output fragment gets some uninitialized memory attached in the outgoing fragment's texture pointer. Then the fragmenter is expected to do the same populating of res_fragment->texture it already did for res_fragment, just relative to fragment->texture->{buf,stride,pitch} etc. It's a bit hairy/janky because til_fb_fragment_t.texture is just a pointer to another til_fb_fragment_t. So the ephemeral/logical fragments fragmenting/tiling produces which tend to just be sitting on the stack need to get another til_fb_fragment_t instance somewhere and made available at the ephemeral til_fb_fragment_t's .texture member. We don't want to be allocating and freeing these things constantly, so for now I'm just ad-hoc stowing the pointer of an adjacent on-stack texture fragment in the .texture member when the incoming fragment has a texture. But this is gross because the rest of the fragment contents don't get initialized _at_all_, and currently if the incoming fragment has no texture the res_fragment->texture member isn't even initialized. The fragmenters aren't really supposed to be expecting anything sensible in *res_fragment, but now we're making use of res_fragment->texture *if* fragment->texture is set. This is just gross. So there's a bunch of asserts sprinkled around to help police this fragility for now, but if someone writes new fragmenters there's a good chance this will trip them up.
2022-08-11modules/plato: add some rudimentary settingsVito Caputo
Just looking to spice up plato a bit. It seems to make a lot of appearances in rtv, or is just one of those highly visible things when it's participating. Way too monotonous as-is.
2022-08-07modules/compose: add moire as a texture moduleVito Caputo
moire makes for an interesting texture, esp. mixed with itself: --seed=0x62f00a7b --module=compose,layers=julia:moire:drizzle,texture=moire
2022-08-07modules/drizzle: add a mapped overlay styleVito Caputo
this introduces a style= setting with values: style=mask simple alpha mask overlay style=map displacement mapped overlay I might add a lighting option for the style=map mode with a moving light source or something like that, but it's already pretty slow as-is. This is mostly just for more testing of the snapshotting, but there's some interesting compositions enabled like: module=compose,layers=submit:moire:drizzle or just moire:drizzle, when style=map happens.
2022-08-07modules/drizzle: experimenting with the new snapshottingVito Caputo
This arguably doesn't require snapshotting to work, since it's doing a rudimentary in-place single pixel alpha-blended replacement using a single pixel at the same location. But the moment it startus using multiple adjacent super-samples, the snapshot becomes necessary. If it gets further complicated with displacements and maybe bump-mapping or something, then the samples can become quite distant from the pixel being written, spreading out into neighboring fragments being rendered simultaneously etc. These are all cause for snapshotting... For now though it's a very simple implementation that at least makes drizzle overlayable, while also providing a smoke test for the new snapshotting functionality.
2022-08-07til: til_fb_fragment_t **fragment_ptr all the thingsVito Caputo
Preparatory commit for enabling cloneable/swappable fragments There's an outstanding issue with the til_fb_page_t submission, see comments. Doesn't matter for now since cloning doesn't happen yet, but will need to be addressed before they do.
2022-07-24modules/checkers: center unaligned checkers scenariosVito Caputo
This introduces a bespoke fragmenter for checkers. The generic til_fb tiler isn't concerned with aesthetics so it doesn't particularly care if clipped tiles are asymmetrically distributed. It worked fine to get checkers developed and working, but it's really unattractive to have the whole be off-centered when the checkers don't perfectly align with the frame size. There's some gross aspects like leaving the frame_{width,height} to be corrected at render time so render_fragment can access the incoming frame_width for cell state determination.
2022-07-24modules/plato: scale to frame sizeVito Caputo
quick and dirty fixup for proper use as checkers fill_module= note this thing already relies on _checked() put_pixel variant
2022-07-24modules/stars: more fast and nasty fragment clip to frame fixesVito Caputo
s/unchecked/checked/ and use frame dimensions, probably more fixes needed but this prevents crashing as checkers fill_module= at least.
2022-07-24modules/spiro: fast and dirty frame clipping fixupVito Caputo
Sorry but more s/unchecked/checked/ and now this seems to not crash when used as a checkers fill_module.
2022-07-24modules/shapes: fix up clipped fragment/frameVito Caputo
This is a first approximation of correct handling of arbitrarily clipped frames described by the incoming fragment. It's still relying on the _checked() put_pixel variants for clipping. That should probably be improved by constraining the loops to the clipped fragment edges.
2022-07-21modules/{compose,rtv}: s/prepare_frame/render_fragment/Vito Caputo
These modules have been doing their work in prepare_frame(), but aren't actually threaded modules and don't return a frame plan from prepare_frame() nor do they provide a render_fragment() to complement the prepare_frame(). The convention thus far has been that single-threaded modules just provide a render_fragment and by not providing a prepare_frame they will be executed serially. These two modules break the contract in a sense by using prepare_frame() without following up with render_fragment(). I'm not sure why it happened that way, maybe at one time prepare_frame() had access to some things that render_fragment() didn't. In any case, just make these use render_fragment() like any other simple non-threaded module would. This was actually causing a crash when n_cpus=1 because module_render_fragment() was assuming the prepare_frame() branch would include a render_fragment(). It should probably be asserting as such.
2022-07-20modules/pixbounce: s/rand/rand_r/Vito Caputo
Wire up seed via til_module_context.seed in the obvious manner, minimal change to the code, no functional difference besides giving pixbounces instances an isolated random seed state.
2022-07-20modules/meta2d: more rand()->rand_r() conversionsVito Caputo
Normalized all the randomizers to use til_module_context.seed while in here.
2022-07-20modules/checkers: one more rand/rand_r conversionVito Caputo
wired up to til_module_context.seed
2022-07-20modules/sparkler: s/rand/rand_r/ and wire up seedVito Caputo
This is a little contorted but not too bad. The input to particles_new() is just a const conf struct, so instead of passing in the seed value for particles_t to contain, a pointer to where the seed lives is passed in via the conf. This requires the caller to persist a seed somewhere outside the particles instance, but at least in rototiller we already have that conveniently in til_module_context_t.
2022-07-20modules/drizzle: switch to rand_r w/local seedVito Caputo
More obvious migrations to using the supplied seed
2022-07-20libs/din: pass seed to din_new()Vito Caputo
also update call sites in modules/{meta2d,swab} accordingly
2022-07-20modules/submit: wire up seed to randomizersVito Caputo
More plumbing seed to rand in the obvious way...
2022-07-20modules/swarm: wire up seed to various randomizersVito Caputo
Just plumbing seed down in the obvoius manner, this could probably be cleaned up a bit in the future.
2022-07-20modules/flui2d: fix clockstep value to match defaultVito Caputo
Due to how the values get matched as strings this extraneous 0 was interfering with FLUI2D_DEFAULT_CLOCKSTEP actually matching anything.
2022-07-18modules/rtv: s/rand/rand_r/Vito Caputo
just fixing up some vestigial rand() invocations to use the seed
2022-07-18til: wire seed up to til randomizersVito Caputo
til_setting_desc_t.random() and til_module_randomize_setup() now take seeds. Note they are not taking a pointer to a shared seed, but instead receive the seed by value. If a caller wishes the seed to evolve on every invocation into these functions, it should simply insert a rand_r(&seed) in producing the supplied seed value. Within a given randomizer, the seed evolves when appropriate. But isolating the effects by default seems appropriate, so callers can easily have determinism within their respective scope regardless of how much nested random use occurs.
2022-06-13modules/sparkler: plug longstanding chunker leakVito Caputo
Once upon a time this thing asserted the pinned chunks were empty, and that code is still sitting there commented out. But when it was commented out ages ago, to enable bulk freeing of chunkers without requiring unrefs of every allocation as an optimization, no code was added to free the pinned chunks. It's been easily ignored all this time since nobody really runs rototiller long enough to notice, but that's becoming less true now with how interesting something like: --module=rtv,layers=compose,duration=1,context_duration=1,snow_module=none is becoming... There are other leaks still, largely surrounding settings, but they are quite small. Eventually those will get tidied up as well.
2022-06-10modules/checkers: experimenting with fill modesVito Caputo
this introduces a color= setting syntax: color=#rrggbb color=0xrrggbb color=rrggbb where rrggbb is case-insensitive html-style hexadecimal also introduces a fill= setting: fill=color fill=sampled fill=textured fill=random fill=mixed sampled draws the color from the incoming fragment when layered, textured draws the pixels from the texture when available, random randomizes the choice from color,sampled,textured. mixed isn't implemented fully and is just aliased to random currently. The thinking for mixed is to allow specifying proportions for color,sampled,textured which would then be applied as weights when randomizing the selection from the three at every filled checker. the current implementation is just calling rand() when randomized, but should really be like the other dynamics in checkers with rate control and hash-based. and introduces a fill_module= setting: this is a first stab at employing other modules for filling the filled cells. Note since checkers is already a threaded module, the fill module context gets created per-cpu but with an n_cpus=1. This is kind of the first time module contexts are being rendered manifold for the same frame, and that's illuminating some shortcomings which needed to be dealt with. Some modules automatically advance a phase/T value on every render which gets persisted in their context struct. With how checkers is using contexts, it's desirable for multiple renders of the same context using the same ticks to produce the same output. So modules need to be more careful about time and determine "dt" (delta-time) values, and animate proportional to ticks elapsed. When ticks doesn't change between renders, dt is zero, and nothing should change. For now this is using a hard-coded list of modules to choose from, you specify the module by name or "none" for no fill_module (solid checker fill). ex: "fill_module=shapes" There's a need for something like fragment color and flag overrides to allow til_module_render() to be treated as more of a brush where the caller gets to specify what colors to use, or if texturing should be allowed. For now, when fill_module=$module is employed, the color determination stuff within checkers doesn't get applied. That will need to be fixed in the future.
2022-06-10til: introduce til_frame_plan_t and .cpu_affinityVito Caputo
modules/checkers w/fill_module=$module requires a consistent mapping of cpu to fragnum since it creates a per-cpu til_module_context_t for the fill_module. The existing implementation for threaded rendering maximizes performance by letting *any* scheduled to run thread advance fragnum atomically and render the acquired fragnum indiscriminately. A side effect of this is any given frame, even rendered by the same module, will have a random mapping of cpus/threads to fragnums. With this change, the simple til_module_t.prepare_frame() API of returning a bare fragmenter function is changed to instead return a "frame plan" in til_frame_plan_t. Right now til_frame_plan_t just contains the same fragmenter as before, but also has a .cpu_affinity member for setting if the frame requires a stable relationship of cpu/thread to fragnum. Setting .cpu_affinity should be avoided if unnecessary, and that is the default if you don't mention .cpu_affinity at all when initializing the plan in the ergonomic manner w/designated initializers. This is because the way .cpu_affinity is implemented will leave threads spinning while they poll for *their* next fragnum using atomic intrinsics. There's probably some room for improvement here, but this is good enough for now to get things working and correct.
2022-06-10modules/roto: drive from ticks, move palette to contetxtVito Caputo
The palette mutates across frames, on a context-specific schedule. Meaning the palette is per-context, so move it into roto_context_t. The phase also needs to be driven by ticks. And when ticks doesn't change in cases where the same context is rendered manifold in the same frame, the phase shouldn't move.
2022-06-10modules/plato: derive movement from delta ticksVito Caputo
This way if a given context gets rendered repeatedly for the same tick, no movement occurs, until ticks changes.
2022-06-10til: add ticks to til_module_context_tVito Caputo
Also wire this up to the til_module_context_new() helper and all its callers. This is in preparation for modules doing more correct delta-T derived animation.
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