Week 4: Audio and Rendering

Summary

Date: 2020-04-05 to 2020-04-11

• GL depth buffer fix -- rendering is corrected on Windows.
• Audio plays in WASM, albeit delayed.

End Result

Implementation

1. Split audio logic from other systems. (amethyst#2215, amethyst#2216, pong_wasm#2)

   This allows the rest of Pong to run even if audio is disabled.

2. Initialization stability on Windows:

   Make drag and drop winit feature optional. (amethyst/winit#a2eea3e, winit#1524)

3. Fixed gfx issues.

   • Clear GL depth buffer. (gfx#35c45ac, gfx#3202, gfx#3205)
   • Load Rgb8Srgb texture format. (gfx#c4b75d3, gfx#3222, gfx#3223)

4. Get audio to play on WASM.

   • Use ishitatsuyuki/cpal#dpeckett-webaudio-poc, which is based off wasm-bindgen POC by dpeckett. (amethyst/cpal#ee1ee1a, cpal#372)
   • Send audio through AudioBuffer in JavaScript. (amethyst#2195, amethyst#2219)
   • Use sed hack to allow web workers to be instantiated without an AudioContext. (pong_wasm#3)