Extend WgpuSetup, egui_kittest now prefers software rasterizers for testing (#5506)

Cargo.lock

@@ -1349,7 +1349,6 @@ dependencies = [
  "egui_kittest",
  "serde",
  "unicode_names2",
- "wgpu",
 ]
 
 [[package]]
@@ -1927,6 +1926,18 @@ dependencies = [
  "bitflags 2.6.0",
 ]
 
+[[package]]
+name = "gpu-allocator"
+version = "0.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c151a2a5ef800297b4e79efa4f4bec035c5f51d5ae587287c9b952bdf734cacd"
+dependencies = [
+ "log",
+ "presser",
+ "thiserror",
+ "windows",
+]
+
 [[package]]
 name = "gpu-descriptor"
 version = "0.3.0"
@@ -3110,6 +3121,12 @@ dependencies = [
  "zerocopy",
 ]
 
+[[package]]
+name = "presser"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8cf8e6a8aa66ce33f63993ffc4ea4271eb5b0530a9002db8455ea6050c77bfa"
+
 [[package]]
 name = "proc-macro-crate"
 version = "3.2.0"
@@ -3263,6 +3280,12 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "range-alloc"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8a99fddc9f0ba0a85884b8d14e3592853e787d581ca1816c91349b10e4eeab"
+
 [[package]]
 name = "raw-window-handle"
 version = "0.5.2"
@@ -4513,6 +4536,7 @@ dependencies = [
  "android_system_properties",
  "arrayvec",
  "ash",
+ "bit-set 0.8.0",
  "bitflags 2.6.0",
  "block",
  "bytemuck",
@@ -4521,6 +4545,7 @@ dependencies = [
  "glow 0.14.2",
  "glutin_wgl_sys",
  "gpu-alloc",
+ "gpu-allocator",
  "gpu-descriptor",
  "js-sys",
  "khronos-egl",
@@ -4534,6 +4559,7 @@ dependencies = [
  "once_cell",
  "parking_lot",
  "profiling",
+ "range-alloc",
  "raw-window-handle 0.6.2",
  "renderdoc-sys",
  "rustc-hash",
@@ -4543,6 +4569,7 @@ dependencies = [
  "web-sys",
  "wgpu-types",
  "windows",
+ "windows-core 0.58.0",
 ]
 
 [[package]]