avenger-wgpu

GPU-accelerated rendering backend for Avenger scene graphs.

Purpose

This crate implements Avenger's primary rendering engine using wgpu for cross-platform GPU acceleration. It converts scene graphs into optimized GPU resources and handles the rendering pipeline from geometry tessellation through final pixel output.

Architecture

The crate provides two main canvas implementations:

Canvas: Native rendering to window surfaces via winit
HtmlCanvasCanvas: WASM rendering to HTML canvas elements

Scene marks are rendered using specialized GPU shaders:

Instanced rendering: Efficient batching for marks with many instances
Multi-mark rendering: Handles complex marks requiring tessellation

Text rendering uses texture atlases with either COSMIC Text (native) or HTML Canvas (WASM) for glyph rasterization.

Integration

Input: Takes avenger-scenegraph::SceneGraph structures
Output: Renders to GPU surfaces or exports to PNG images
Text: Uses avenger-text for text measurement and rasterization
Geometry: Leverages Lyon for path tessellation and GPU vertex generation