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2019-11-16libs/ascii: add a basic mono bitmap ascii charsetVito Caputo
The rtv module needs to show some captions, so I'm adding a minimal bitmap ascii text renderer.
2019-11-14snow: add a simple tv snow / white noise moduleVito Caputo
I wanted to add some noise to the rtv module and figured why not just add a snow module and make rtv pass through it briefly when switching modules. It's not interesting by itself, but as more composite/meta modules like rtv get made it might be handy beyond rtv.
2019-11-14rtv: implement "Rototiller TV" rendererVito Caputo
This is sort of a meta renderer, as it simply renders other modules in its prepare_frame() stage. They're still threaded as the newly public rototiller_module_render() utilizes the threading machinery, it just needs to be called from the serial phase @ prepare_frame(). I'm pretty sure this module will leak memory every time it changes modules, since the existing cleanup paths for the modules hasn't needed to be thorough in the least. So that's something to fix in a later commit, go through all the modules and make sure their destroy_context() entrypoints actually cleans everything up. See the source for some rtv-specific TODOs.
2019-11-10build: build contributed pixbounce moduleVito Caputo
2019-10-14modules/flui2d: add 2D fluid dynamics simulationVito Caputo
This implements near verbatim the code found in the paper titled: Real-Time Fluid Dynamics for Games By Jos Stam It sometimes has the filename GDC03.PDF, or Stam_fluids_GDC03.pdf The density field is rendered using simple linear interpolation of the samples, in a grayscale palette. No gamma correction is being performed. There are three configurable defines of interest: VISCOSITY, DIFFUSION, and ROOT. This module is only threaded in the drawing stage, so basically the linear interpolation uses multiple cores. The simulation itself is not threaded, the implementation from the paper made no such considerations. It would be nice to reimplement this in a threaded fashion with a good generalized API, then move it into libs. Something where a unit square can be sampled for interpolated densities would be nice. Then extend it into 3 dimensions for volumetric effects...
2018-12-30modules/submit: add cellular automata game moduleVito Caputo
This module displays realtime battle for domination simulated as 2D cellular automata. This is just a test of the backend piece for a work-in-progress multiplayer game idea. The visuals were kind of interesting to watch so I figured may as well merge it as a module to share. Enjoy! PS: the results can vary a lot by tweaking the defines in submit.c
2018-03-19ray: libize raytracer core, introduces src/libsVito Caputo
This is the first step of breaking out all the core rendering stuffs into reusable libraries and making modules purely compositional, consumers of various included rendering/effects libraries. Expect multiple modules leveraging libray for a variety of scenes and such. Also expect compositions mixing the various libraries for more interesting visuals.
2018-02-27build: make drm optionalChristian Hergert
2018-02-27autotools: remove vestigial ROTOTILLER_* varsVito Caputo
Fixes silly cosmetic error in configure output for checking libdrm...
2018-02-23drm_fb,sdl_fb: drop vestigial headersVito Caputo
With fb backends entirely abstracted behind fb_ops_t, this is no longer necessary.
2018-02-22sdl_fb: implement rudimentary sdl fb backendVito Caputo
This uses a simple fixed 640x480 windowed mode (for now). The SDL2 Renderer & Texture API is used for vsync-synchronized presents. There's probably excessive copying going on because the rototiller fb code manages pages and flips but SDL2 doesn't really expose low-level control of such things. This backend is quite useful for development purposes, allowing quick iteration in a windowed environment. Note this is just the backend implementation, it's dormant code but trivially activated.
2018-02-22*: embrace new generic settings paradigmVito Caputo
This should probably be split into multiple commits, but for simplicity sake it's all cut over at once. drm_fb.c sees major changes, migrating the remaining drm-specific bits from drmsetup into it, behind the settings API. rototiller.c sees a bunch of scaffolding surrounding the settings API and wiring it up into the commandline handling and renderers and video backends. fb.[ch] see minor changes as settings get plumbed to the backend drmsetup.[ch] goes bye bye
2018-02-20setup: add simple stdio setup_interactively()Vito Caputo
Preliminary means for interactively configuring settings and defaults
2018-02-20settings: introduce abstract settingsVito Caputo
Settings will be used to express configurable parameters in the rendering modules and fb backends. The goal is to address both commandline argument setting of parameters, automatic use of defaults, as well as interactive configuration including the outputting of the resulting settings in a form usable as a commandline for future reuse. Since settings can be numerous and highly varied from one module or backend to another, a form similar to the Linux kernel's cmdline or QEMU's approach has been adopted. For example, a complete DRM backend, card selection and config would be: rototiller --video=drm,dev=/dev/dri/card0,connector=LVDS-1,mode=1024x768@60 If any of the above were omitted, then the missing settings would be interactively configured. If you added --defaults, then any omissions would be automatically filled in with the defaults. i.e. rototiller --video=drm,dev=/dev/dri/card4 --defaults would use the preferred connector and mode for that card. rototiller --video=drm --defaults would do the same but also default to the /dev/dri/card0 path. for brevity, I omitted rendering modules from above, but the same approach applies simply to --module=: rototiller --module=sparkler --video=drm --defaults If you ran rototiller without any arguments, then a fully interactive setup would ensue for module and video. If you ran rototiller with just --defaults, then everything is defaulted for you. A default rendering module will be used (the original roto renderer, probably). Note that this commit only adds scaffolding to make this possible, none of this is wired up yet.
2018-01-01drm_fb: implement drm fb backendVito Caputo
Largely mechanical copying of the drm code into the new fb_ops_t abstraction. Dormant for now.
2017-04-22rototiller: add threaded renderingVito Caputo
This is a simple worker thread implementation derived from the ray_threads code in the ray module. The ray_threads code should be discarded in a future commit now that rototiller can render fragments using threads. If a module supplies a prepare_frame() method, then it is called per-frame to prepare a rototiller_frame_t which specifies how to divvy up the page into fragments. Those fragments are then dispatched to a thread per CPU which call the module's rendering function in parallel. There is no coupling of the number of fragments in a frame to the number of threads/CPUs. Some modules may benefit from the locality of tile-based rendering, so the fragments are simply dispatched across the available CPUs in a striped fashion. Helpers will be added later to the fb interface for tiling fragments, which modules desiring tiled rendering may utilize in their prepare_frame() methods. This commit does not modify any modules to become threaded, it only adds the scaffolding.
2017-02-12julia: add a morphing Julia set rendererVito Caputo
This is unoptimized, with a palette slapped together in vim, but still pretty neat!
2017-02-07plasma: add a plasma rendererVito Caputo
2017-01-18*: move source into src/ subdirVito Caputo
Restoring some organizational sanity since adopting autotools.
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