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2018-12-31modules/submit: add bilinearly-interpolated variantVito Caputo
This substantially reworks the cell sampling in submit. As a result, it's now threaded in the rendering phase which now resembles a texture mapper sans transformations. This produces a full-screen rendering rather than a potentially smaller one when the resolution wasn't cleanly divisable by the grid size. A new module, named submit-softly has also been added to expose the bilinearly interpolated variant. The transition between cells is also employing a smoothstep so it's not actually linear. The original non-interpolated version is retained as well, at the same submit module name. Some minor cleanups happened as well, nothing worth mentioning, except perhaps that the cells are now a uint8_t which is fine unless someone tries to redefine NUM_PLAYERS > 255.
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
2018-12-06rototiller: make some local helpers staticVito Caputo
2018-02-27build: make drm optionalChristian Hergert
2018-02-26rototiller,fb: swap dispatch with page flippingVito Caputo
For the sake of sdl_fb, move page flipping into the main thread and run module render dispatch from another thread instead. This eliminates the fb flipper thread, moving its functionality into fb_flip() which synchronously consumes and performs a single flip from the same queue as before - the function is verbatim the loop body of the flipper thread. Now main() calls fb_flip() in a loop where it previously dispatched pages for rendering. Rendering dispatch is now performed in a created thread. See the comment in fb.c for more explanation of this shuffle.
2018-02-23drm_fb,sdl_fb: drop vestigial headersVito Caputo
With fb backends entirely abstracted behind fb_ops_t, this is no longer necessary.
2018-02-23rototiller: drop vestigial drm includesVito Caputo
2018-02-22rototiller: make the sdl video backend the defaultVito Caputo
Since people are more likely to first run this from a GUI environment, default to SDL which should work in most situations. Then if they want they can switch to a linux console and explicitly use the drm video backend.
2018-02-22rototiller: wire up sdl video backendVito Caputo
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
2018-02-20rototiller: rudimentary argv parsing scaffoldingVito Caputo
Nothing wired up yet.
2018-01-01fb: switch over to fb_ops_t abstractionVito Caputo
Remove everything drm-related from fb.c, utilizing the implementation in drm_fb.c instead.
2017-12-10rototiller: introduce module.finish_frame()Vito Caputo
Add a hook for post-render serialized frame completion, some of the renderers may have state to cleanup after rendering a frame. A future commit may change add a return value to control flow for features like multi-pass rendering within a given module. The raytracer for example may want to add concurrently executed post filters, and having a non-void return from finish_frame() would be a tidy way to tell rototiller "go back to prepare->render for this context" as many times as necessary, keeping the pass state in the context. For now its return is void however, as I just need a cleanup hook as the raytracer becomes more stateful per frame with a BIH spatial index in the works.
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.
2017-08-07rototiller: remove unused variableVito 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.
2017-04-22rototiller: 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.
2017-04-22*: /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.
2017-02-12julia: 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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