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2021-02-07modules/plasma: trivial cleanupsVito Caputo
- move LUT initialization to context create - minor syntactic changes
2020-01-25rototiller: introduce ticks and wire up to modulesVito Caputo
Most modules find themselves wanting some kind of "t" value increasing with time or frames rendered. It's common for them to create and maintain this variable locally, incrementing it with every frame rendered. It may be interesting to introduce a global notion of ticks since rototiller started, and have all modules derive their "t" value from this instead of having their own private versions of it. In future modules and general innovations it seems likely that playing with time, like jumping it forwards and backwards to achieve some visual effects, will be desirable. This isn't applicable to all modules, but for many their entire visible state is derived from their "t" value, making them entirely reversible. This commit doesn't change any modules functionally, it only adds the plumbing to pull a ticks value down to the modules from the core. A ticks offset has also been introduced in preparation for supporting dynamic shifting of the ticks value, though no API is added for doing so yet. It also seems likely an API will be needed for disabling the time-based ticks advancement, with functions for explicitly setting its value. If modules are created for incorporating external sequencers and music coordination, they will almost certainly need to manage the ticks value explicitly. When a sequencer jumps forwards/backwards in the creative process, the module glue responsible will need to keep ticks synchronized with the sequencer/editor tool. Before any of this can happen, we need ticks as a first-class core thing shared by all modules. Future commits will have to modify existing modules to use the ticks appropriately, replacing their bespoke variants.
2019-11-24rototiller: rototiller_fragmenter_t s/num/number/Vito Caputo
Mechanical change removing abbreviation for consistency
2019-11-23rototiller: pass cpu to .render_fragment()Vito Caputo
Mostly mechanical change, though threads.c needed some jiggering to make the logical cpu id available to the worker threads. Now render_fragment() can easily addresss per-cpu data created by create_context().
2019-11-23rototiller: 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.
2018-02-27autotools: remove vestigial ROTOTILLER_* varsVito Caputo
Fixes silly cosmetic error in configure output for checking libdrm...
2017-09-15modules/*: cease dividing stride by 4Vito Caputo
Just cast buf to (void *) for the pointer arithmetic, stride is in units of bytes and no assumptions should be made about its value such as divisability by 4.
2017-09-14fb: s/fb_fragment_divide_single/fb_fragment_slice_single/Vito Caputo
Mechanical cosmetic change
2017-09-14*: use fragment generatorVito 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.
2017-04-22plasma: utilize context struct for module stateVito Caputo
2017-04-22*: add module context machineryVito 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.
2017-04-22plasma: enable threaded renderingVito Caputo
Same general procedure as the previous commit made to the julia module.
2017-04-22*: /render/render_fragment/ in rototiller_module_tVito 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/gVito Caputo
Make consistent with the source directory structure naming.
2017-02-07plasma: add a plasma rendererVito Caputo
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