feat: native Wayland support with EGL/GLX runtime selection #36

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MrUnknownDE · 2026-04-05T16:18:13+02:00

MrUnknownDE commented

2026-04-05 16:18:13 +02:00

Originally created by @akelmanson on 4/1/2026

Summary

Native Wayland 3D viewport — OrcaSlicer runs on Wayland without XWayland, with fully functional 3D viewport (Prepare + Preview)
X11 backward compatible — Same binary works on X11 via GLX (PreferGLX) and Wayland via EGL
GLEW replaced with libepoxy — Runtime EGL/GLX dispatch instead of GLEW's compile-time lock

Closes #8145
Closes #6433
Closes #10059
Closes #11698

Changes

Build System

Enable wxUSE_GLCANVAS_EGL=ON and GLEW_USE_EGL=ON in dependency builds
Add libepoxy 1.5.10 as vendored dependency (Meson ExternalProject)
Patch OpenCSG to use libepoxy instead of GLEW (17 source files)
Remove GLEW from dependency chain
Add FindEpoxy.cmake find module

Source

Replace GL/glew.h with epoxy/gl.h across 50 source files
Migrate GLEW API calls (glewInit, extension checks) to libepoxy equivalents
Add wxGLCanvas::PreferGLX() for X11 GLX backend selection
Runtime Wayland/X11 detection via WAYLAND_DISPLAY, XDG_SESSION_TYPE, GDK_BACKEND
Remove hardcoded GDK_BACKEND=x11 forcing

Bug Fixes

Re-enable canvas rendering when GL context not ready at Wayland boot (EGL lazy surface creation)
Deferred scene reload for models loaded before GL init
Guard activate_gizmo() against empty gizmo vector during deferred init
Remove Zink workaround from Linux launch wrapper (conflicts with native EGL)
Robust display server detection respecting GDK_BACKEND override

Test plan

OrcaSlicer launches on native Wayland (Cosmic DE) with working 3D viewport
Models load and display correctly in Prepare tab
Slice preview renders in Preview tab
OrcaSlicer launches on X11 (via GDK_BACKEND=x11) with working 3D viewport
Same binary works on both without recompilation
Test on GNOME Wayland
Test on KDE Plasma Wayland
Test on AMD/Intel GPU

Tested on: Arch Linux, Cosmic DE, NVIDIA nvidia-open 590.48.01, egl-wayland 1.1.21

Known limitations

Menus/popups may not work correctly on some Wayland compositors (upstream wxWidgets issues #24174, #23942)
Splash screen skipped on Wayland (requires parent window that doesn't exist yet)

🤖 Generated with Claude Code

*Originally created by @akelmanson on 4/1/2026* ## Summary - **Native Wayland 3D viewport** — OrcaSlicer runs on Wayland without XWayland, with fully functional 3D viewport (Prepare + Preview) - **X11 backward compatible** — Same binary works on X11 via GLX (PreferGLX) and Wayland via EGL - **GLEW replaced with libepoxy** — Runtime EGL/GLX dispatch instead of GLEW's compile-time lock Closes #8145 Closes #6433 Closes #10059 Closes #11698 ## Changes ### Build System - Enable `wxUSE_GLCANVAS_EGL=ON` and `GLEW_USE_EGL=ON` in dependency builds - Add libepoxy 1.5.10 as vendored dependency (Meson ExternalProject) - Patch OpenCSG to use libepoxy instead of GLEW (17 source files) - Remove GLEW from dependency chain - Add `FindEpoxy.cmake` find module ### Source - Replace `GL/glew.h` with `epoxy/gl.h` across 50 source files - Migrate GLEW API calls (glewInit, extension checks) to libepoxy equivalents - Add `wxGLCanvas::PreferGLX()` for X11 GLX backend selection - Runtime Wayland/X11 detection via `WAYLAND_DISPLAY`, `XDG_SESSION_TYPE`, `GDK_BACKEND` - Remove hardcoded `GDK_BACKEND=x11` forcing ### Bug Fixes - Re-enable canvas rendering when GL context not ready at Wayland boot (EGL lazy surface creation) - Deferred scene reload for models loaded before GL init - Guard `activate_gizmo()` against empty gizmo vector during deferred init - Remove Zink workaround from Linux launch wrapper (conflicts with native EGL) - Robust display server detection respecting `GDK_BACKEND` override ## Test plan - [x] OrcaSlicer launches on native Wayland (Cosmic DE) with working 3D viewport - [x] Models load and display correctly in Prepare tab - [x] Slice preview renders in Preview tab - [x] OrcaSlicer launches on X11 (via `GDK_BACKEND=x11`) with working 3D viewport - [x] Same binary works on both without recompilation - [ ] Test on GNOME Wayland - [ ] Test on KDE Plasma Wayland - [ ] Test on AMD/Intel GPU **Tested on:** Arch Linux, Cosmic DE, NVIDIA nvidia-open 590.48.01, egl-wayland 1.1.21 ## Known limitations - Menus/popups may not work correctly on some Wayland compositors (upstream wxWidgets issues [#24174](https://github.com/wxWidgets/wxWidgets/issues/24174), [#23942](https://github.com/wxWidgets/wxWidgets/issues/23942)) - Splash screen skipped on Wayland (requires parent window that doesn't exist yet) 🤖 Generated with [Claude Code](https://claude.com/claude-code)

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Reference: github/OrcaSlicer#36