Frag

Fragment shaders in Rust. Let's you skip the boilerplate and just write a fragment shader. Useful when for example, writing a raymarching shader.

Features

• Compose shader of multiple part or files
• Live coding: updates when a file is updated
• Keyboard controls for time
• Resolution independent: separate resolutions for rendering and displaying. Can be used to stretch, pixelate or anti alias
• MP4 rendering with FFMPEG
• Save current frame as PNG image

Controls

• Space: Pause/Resume time and rendering
• Left(hold): go back in time
• Right(hold): go forward in time
• Down: set time to 0
• PageDown: jump backward in time with 5 seconds
• PageUp: jump forward in time with 5 seconds

Todo

• Post process fragment shader accessable

Examples

Example live coding, with pixel art like style

rust use frag::*; let streamer = shader::ShaderStreamer::new() .with_file("lib.glsl") .with_file("shader.glsl"); FragConf::new() .with_window_width(1600) .with_window_height(900) .with_canvas_width(320) .with_canvas_height(180) .with_pixelate(true) .with_streamer(streamer) .run_live().expect("Could not run.");

Example rendering to video

rust use frag::*; let streamer = shader::ShaderStreamer::new() .with_file("lib.glsl") .with_file("shader.glsl"); FragConf::new() .with_window_width(1600) .with_window_height(900) .with_streamer(streamer) .into_ffmpeg_renderer() .with_framerate(30) .with_crf(20) .with_preset(Preset::Slow) .with_tune(Tune::Animation) .with_length(600) .with_output("render.mp4") .render().expect("Could not render.");

License

``` Copyright (C) 2022 Cody Bloemhard

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/. ```