https://github.com/thi-ng/raymarchcl

Experimental OpenCL voxel rendering/raymarching via Clojure REPL (from 2013)
https://github.com/thi-ng/raymarchcl

clojure opencl renderer voxel

Last synced: 3 months ago
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Experimental OpenCL voxel rendering/raymarching via Clojure REPL (from 2013)

• Host: GitHub
• URL: https://github.com/thi-ng/raymarchcl
• Owner: thi-ng
• Created: 2015-05-24T09:34:53.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-06-02T01:27:10.000Z (over 9 years ago)
• Last Synced: 2024-09-30T08:04:40.701Z (4 months ago)
• Topics: clojure, opencl, renderer, voxel
• Language: C
• Homepage:
• Size: 2.58 MB
• Stars: 134
• Watchers: 9
• Forks: 5
• Open Issues: 1
• Metadata Files:
  • Readme: README.org

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README

        
* thi.ng/raymarchcl

[[./assets/gyroid-metal75.jpg]]

Experimental OpenCL voxel rendering/raymarching via Clojure REPL.

** Usage

#+BEGIN_SRC shell

git clone [email protected]:thi-ng/raymarchcl.git

cd raymarchcl

lein repl

#+END_SRC

*** Prepare test voxel data

#+BEGIN_SRC clojure

(require '[thi.ng.raymarchcl.core :as rm])

(require '[thi.ng.raymarchcl.generators :as gen])

(require '[thi.ng.raymarchcl.io :as vio])

;; generates a 134MB binary file in project root for later reference

(vio/save-volume "gyroid-512.vox" 512 (gen/make-gyroid-volume {:vres [512 512 512]}))

#+END_SRC

*** Rendering from the REPL

#+BEGIN_SRC clojure

  (rm/test-render

   :width 640 :height 360

   :iter 1

   :vres 512 :vname "gyroid-512.vox"

   :mat :orange-stripes

   :theta -45 :dist 2.25 :dof 1e-5

   :out-path "out.jpg")

#+END_SRC

*Important note:* Increase the =:iter= count for better quality images!

Material presets are defined in the [[./src/thi/ng/raymarchcl/materials.clj][materials namespace]], currently only:

- =:orange-stripes=

- =:metal=

- =:metal2=

- =:ao=

Different voxel value bands are mapped to different materials within each preset.

** Gallery of selected experiments

*** Stanford Dragon

[[./assets/dragon-refl16.jpg]]

[[./assets/dragon2.jpg]] 

*** Stanford bunny

[[./assets/bunny-normsmooth-16spp-2.jpg]]

*** Gyroid isosurface

The next two images were rendered w/ 100 iteration to reduce DOF noise

[[./assets/gyroid-100spp-2.jpg]]

[[./assets/gyroid-100spp.jpg]]

[[./assets/gyroid-2.jpg]]

[[./assets/gyroid-25spp.jpg]]

[[./assets/gyroid-dof-corner.jpg]]

[[./assets/gyroid-dof0.025.jpg]]

[[./assets/gyroid-res224-dof0.025.jpg]]

*** NVidia Tesla on EC2

These images were rendered using Tesla instances on AWS EC2 (back in 2013)

[[./assets/gyroid-metal-dof8.jpg]]

[[./assets/gyroid-tesla.jpg]]

** License

Copyright © 2013 - 2015 Karsten Schmidt

Distributed under the Apache Software License 2.0