v4.3.1: render Windows through wgpu and keep the installer window open

Windows 10 1809 sessions with only the Microsoft display driver expose OpenGL 1.1, which egui_glow refuses. The Windows build now uses wgpu on Direct3D 12 and its adapter selector accepts WARP, the software rasterizer, after every hardware class, so a VM or Remote Desktop session still starts. Linux keeps the smaller glow renderer.

The GUI is a windows-subsystem binary now, so launching it from the Start menu does not flash a console; startup failures and --help go to a native message box. The PowerShell installer pauses before closing unless -NoPause is passed.

1 files changed, 12 insertions, 5 deletions

diff --git a/gui/Cargo.toml b/gui/Cargo.toml
index 8bcbda0..24bf560 100644
--- a/gui/Cargo.toml
+++ b/gui/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "zagan-bet-gui"
-version = "4.3.0"
+version = "4.3.1"
 edition = "2024"
 license = "GPL-3.0-or-later"
 description = "Desktop frontend for zagan-bet"
@@ -12,12 +12,19 @@ path = "src/main.rs"
 [dependencies]
 # No default features: the GUI never links the server's native-tls.
 zagan-bet = { path = "..", default-features = false }
-# glow (OpenGL) rather than wgpu: no Vulkan runtime, and it cross-compiles to
-# Windows with the mingw toolchain. Fonts are embedded, so no default_fonts.
+rusqlite = { version = "0.29", features = ["bundled"] }
+sha2 = "0.10"
+
+# Linux uses glow (OpenGL): small, and every desktop has a usable driver.
+# Windows uses wgpu on Direct3D 12, which also has the WARP software adapter on
+# machines with no OpenGL driver (Windows 10 1809 over Remote Desktop, VMs).
+[target.'cfg(windows)'.dependencies]
+eframe = { version = "0.37", default-features = false, features = ["wgpu"] }
+windows-sys = { version = "0.59", features = ["Win32_UI_WindowsAndMessaging"] }
+
+[target.'cfg(not(windows))'.dependencies]
 eframe = { version = "0.37", default-features = false, features = [
     "glow",
     "wayland",
     "x11",
 ] }
-rusqlite = { version = "0.29", features = ["bundled"] }
-sha2 = "0.10"