Shape the pipeline
Describe layouts and shader stages with Ruby blocks.
Pure Ruby software renderer
A graphics pipeline you can read.
Define a graphics pipeline in Ruby, rasterize it in software, and present native or headless frames.
gem install rbgl
Keep every stage in view.
Connect typed vertex data, Ruby shader blocks, rasterization, and portable output.
Rasterize in software
Draw triangles, lines, and points with depth and alpha blending.
Present anywhere
Use Cocoa, Wayland, X11, or headless file output.
A small first step
Start with one example.
Install the gem, then follow the project guide for platform requirements and the full API.
require "rbgl"
window = RBGL::GUI::Window.new(
width: 160, height: 120, backend: :file,
output_dir: "frames", format: :ppm,
max_frames: 1, target_fps: nil
)
# Define pipeline and vertices as shown in the guide.
window.run do |context, _delta_time|
context.bind_pipeline(pipeline)
context.bind_vertex_buffer(vertices)
context.draw_arrays(:triangles, 0, 3)
end