Mesa Showcase Demo

Short description:
-------------------
Native GLES 3.0 demoscene showcase running on Mesa/mesa.library.


Description:
-------------------
Mesa Showcase Demo is a demoscene-style showcase running fully
native and hardware-accelerated on AmigaOS4.1 - video and audio,
no emulator, nothing borrowed. It runs entirely through mesa.library
- no ogles2.library, no warp3dnova.library, no GL4ES - genuine
OpenGL ES 3.0 shaders, native on the Amiga.

Six handwritten GLSL ES 3.00 fragment-shader scenes are choreographed
against a music track, with smooth crossfade transitions, a
beat-synced pulse, a live FPS counter, and a scrolling credits line:

1. Tunnel Drift - a raymarched tunnel flythrough with a weaving,
   rolling camera and Fresnel-based rim glow.

2. Nova Core - a dense, glowing plasma-energy core built from
   layered fractal noise, with a hot, saturated colour palette.

3. Liquid Chrome - raymarched metaballs fusing and separating in
   real time, with a procedural chrome-like reflection.

4. Prism Bloom - a kaleidoscopic, domain-folded fractal pattern
   that rotates and blooms outward.

5. Crystal Fracture - a raymarched cluster of fractured 3D crystal
   shards, catching light with Fresnel-based glints.

6. Sign-Off - a raymarched signed-distance-field logo reveal that
   closes the show.

None of this would exist without kas1e's Mesa port for AmigaOS4.1.
Reverse-engineering A-EON's RadeonRX/RadeonHD drivers to build
Mesa's winsys bridge, and bringing OpenGL up to 4.6 and OpenGL ES
up to 3.2 to a platform that never had real hardware-accelerated
Mesa before, is a massive amount of work. This demo exists purely
to show what that port can do. Huge thanks, kas1e!

Requirements:
- AmigaOS 4.1 (Final Edition / Update)
- Mesa (mesa.library) installed
- A supported RadeonRX / RadeonHD graphics card

Installation:
- Copy the whole drawer to your hard drive.
- Double-click the demo icon to run - the music is loaded
  relative to the program's own directory, so no path setup
  or shell/cd is required.

Music:
- Track by NastelBom, downloaded from Pixabay
  (https://pixabay.com/de/music/search/youtube%20intro/),
  used under the Pixabay Content License. See CREDITS.guide
  for full details.

Feedback and bug reports are welcome.