grimoire

What?

grimoire is a cross-platform (Windows, MacOS, "Linux") live-coding tool for creating GLSL shader demos in the style of shadertoy and vertexshaderart. Users write a TOML configuration file that defines resources (image, video, audio, webcam, 3D texture, kinect data) and render passes (vertex shader, fragment shader, primitive type and count, blend state, depth state, uniform samplers). Your shaders, resources, and config file are watched for changes and are live updated at runtime. See the examples below to get started or read the SPEC.md for a detailed description of the configuration schema and runtime behavior.

grimoire is my personal prototyping tool and is in the early stages of development. You may encounter bugs and features may change without notice. Do not expect support. With that out of the way, I think you will find grimoire an easy to use, robust, and powerful tool for prototyping shader effects. Feedback is welcome!

examples: shadertoy compatibility

The following shaders demonstrate compatibility with various shadertoy features. All content is copyright by the original author and licensed under the terms specified, or by the default shadertoy license. If you do not want your work included in this list, you can contact me and I will remove it immediately.

new, source: cargo run -- ./examples/shadertoy-new
debug, source: cargo run -- ./examples/shadertoy-debug
mouse, source: cargo run -- ./examples/shadertoy-mouse
keyboard, source: cargo run -- ./examples/shadertoy-keyboard-debug
time, source: cargo run -- ./examples/shadertoy-time
fps, source: cargo run -- ./examples/shadertoy-fps
microphone, source: cargo run -- ./examples/shadertoy-microphone
sound, source: cargo run -- ./examples/shadertoy-sound
multipass w/ feedback, source: cargo run -- ./examples/shadertoy-deformation-feedback
video: cargo run -- ./examples/video
webcam: cargo run -- ./examples/webcam

Install

grimoire tracks the latest version of Rust 2018 stable, which as of this update is 1.34. Note that I actively develop on both Windows 10 and MacOS 10.14 Mojave, so you should have the best experience on those platforms. The project has travis.ci builders for Ubuntu 18.04, but I do not actively test or develop on this platform. If you encounter bugs, please file an issue.

You need to build and install grimoire from source using rust and install the required system dependencies:

SDL2 for window and input handling
GStreamer for video, webcam, audio, microphone, and kinect2 inputs
OpenGL 3.3+, but uses a subset of OpenGL accessible from GLES 3.0

MacOS

$ curl https://sh.rustup.rs -sSf | sh
$ brew install sdl2 gstreamer gst-plugins-base gst-plugins-good gst-plugins-bad gst-plugins-ugly gst-libav

If running on MacOS 10.14 (Mojave), be sure to manually copy Info.plist to target/debug or target/release before running a demo that uses a webcam or microphone resource. The presence of this file allows MacOS to prompt for permission to access the camera and microphone.

If you encounter a build error similar to "Package libffi was not found in the pkg-config search path" you'll need to set your PKG_CONFIG_PATH as described by brew:

$ export PKG_CONFIG_PATH=/usr/local/opt/libffi/lib/pkgconfig

Windows

Download and run msys2
Use the x86_64-pc-windows-gnu toolchain: rustup default stable-x86_64-pc-windows-gnu
Install the required dependencies /w pacman

$ pacman -S mingw-w64-x86_64-pkg-config mingw-w64-x86_64-SDL2 mingw-w64-x86_64-GStreamer mingw-w64-x86_64-gst-plugins-base mingw-w64-x86_64-gst-plugins-good mingw-w64-x86_64-gst-plugins-bad mingw-w64-x86_64-gst-plugins-ugly mingw-w64-x86_64-gst-libav

Manually copy the SDL2.dll to the top-level grimoire source directory (the one containing Cargo.toml) before running

Note that you need to ensure that your PATH contains the mingw64/bin directory, and that your PKG_CONFIG_PATH lists the directory containing all the .pc files. Since I installed msys2 with scoop, my .bash_profile contains the following lines:

PATH="$PATH:/c/Users/jshrake/scoop/apps/msys2/current/mingw64/bin"
PKG_CONFIG_PATH="/c/Users/jshrake/scoop/apps/msys2/current/mingw64/lib/pkgconfig"

Breadcrumbs:

https://github.com/sdroege/GStreamer-rs#windows

Linux

$ curl https://sh.rustup.rs -sSf | sh
$ apt-get install libsdl2-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav

Build

Rust uses cargo to manage package dependencies and build:

$ cargo build

or with optimizations:

$ cargo build --release

Run

Display help:

cargo run -- --help

To run the default new shadertoy shader:

RUST_LOG=info cargo run -- ./examples/shadertoy-new/

grimoire will watch for saved changes to any file referenced by ./examples/shadertoy-new/grim.toml, including shaders and assets.

See the log crate documentation for more logging levels.

Playback control

F1: Toggles play/pause
F2: Pauses and steps back one frame
F3: Pauses and steps forward one frame
F4: Restarts playback at frame 0 (iTime = 0)
ESC: Exit the application

If you are using the keyboard resouce, be sure to avoid these keys. Additionally, you may want to avoid making use of any of the function keys, as I may use these for other features in the future. Note that while toggling play/pause and restarting playback (F1 and F4) work as expected with audio/video resources, F2 and F3 (frame stepping) do not.

Resources

fragment shaders

vertex shaders

Inspiration

License

Licensed under either of

Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

jshrake/grimoire-legacy

jshrake

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