From fe3e317061d59fa1e0172bd44d0d6dd2e3b965f5 Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Date: Tue, 22 Mar 2022 10:26:22 +0100
Subject: [PATCH] Add example using three-d

https://github.com/asny/three-d recently merged a PR adding
`glow` support: https://github.com/asny/three-d/pull/210
This means it is a prime candidate for embedding 3D painting inside
an eframe app.

There are currently a few kinks that need to be figured out:

### Black screen
When reusing the same three_d context over time (as one should),
we only get one frame of egui together with three_d, and then after that
a black screen with just the three_d painting on top.

I need to fix that before merging this PR.

### `Shape: Send + Sync`
`Shape` is `Send + Sync` and `three_d::Context` is not. This means
we cannot store a three_d context and send it to the `Shape::Callback`.

So we either need to recreate the three_d context each frame (obviously
a bad idea), or access it through a `thread_local` hack.
This PR adds both as examples, with a checkbox to switch.

We could consider making `Shape: !Send + !Sync`, but that would mean
`egui::Context` could not be `Send+Sync` either (because the egui
context stores shapes). This could actually be fine. `egui::Context`
should only be used from a background thread for calling request_repaint
and allocating textures. These could be made separate parts of the
egui Context, so that one would do:

``` rust

let repaint_signal = egui_ctx.repaint_signal();
let tex_mngr = egui_ctx.tex_mngr();
std::thread::spawn(move || {
    // We can use repaint_signal and tex_mngr here,
    // but NOT `egui_ctx`.
}):

Related:
* https://github.com/emilk/egui/issues/1379
* https://github.com/emilk/egui/pull/1380
* https://github.com/emilk/egui/pull/1389
---
 Cargo.lock                           | 1223 ++++++++++++++++++++++++--
 eframe/Cargo.toml                    |    1 +
 eframe/examples/custom_3d_three-d.rs |  159 ++++
 3 files changed, 1311 insertions(+), 72 deletions(-)
 create mode 100644 eframe/examples/custom_3d_three-d.rs

diff --git a/Cargo.lock b/Cargo.lock
index 7c1e66bf3aa9..8a44c16b485d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -9,7 +9,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61caed9aec6daeee1ea38ccf5fb225e4f96c1eeead1b4a5c267324a63cf02326"
 dependencies = [
  "ab_glyph_rasterizer",
- "owned_ttf_parser",
+ "owned_ttf_parser 0.14.0",
 ]
 
 [[package]]
@@ -66,6 +66,19 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "andrew"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c4afb09dd642feec8408e33f92f3ffc4052946f6b20f32fb99c1f58cd4fa7cf"
+dependencies = [
+ "bitflags",
+ "rusttype",
+ "walkdir",
+ "xdg",
+ "xml-rs",
+]
+
 [[package]]
 name = "android_glue"
 version = "0.2.3"
@@ -81,6 +94,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "approx"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f2a05fd1bd10b2527e20a2cd32d8873d115b8b39fe219ee25f42a8aca6ba278"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "arrayref"
 version = "0.3.6"
@@ -203,6 +225,12 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "atomic_refcell"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73b5e5f48b927f04e952dedc932f31995a65a0bf65ec971c74436e51bf6e970d"
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -235,6 +263,12 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "base64"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
+
 [[package]]
 name = "base64"
 version = "0.13.0"
@@ -366,6 +400,16 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "calloop"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b036167e76041694579972c28cf4877b4f92da222560ddb49008937b6a6727c"
+dependencies = [
+ "log",
+ "nix 0.18.0",
+]
+
 [[package]]
 name = "calloop"
 version = "0.9.3"
@@ -436,6 +480,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cgmath"
+version = "0.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a98d30140e3296250832bbaaff83b27dcd6fa3cc70fb6f1f3e5c9c0023b5317"
+dependencies = [
+ "approx",
+ "num-traits",
+]
+
 [[package]]
 name = "chrono"
 version = "0.4.19"
@@ -471,7 +525,7 @@ checksum = "4cc00842eed744b858222c4c9faf7243aafc6d33f92f96935263ef4d8a41ce21"
 dependencies = [
  "glob",
  "libc",
- "libloading",
+ "libloading 0.7.3",
 ]
 
 [[package]]
@@ -706,6 +760,20 @@ dependencies = [
  "itertools",
 ]
 
+[[package]]
+name = "crossbeam"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ae5588f6b3c3cb05239e90bd110f257254aecd01e4635400391aeae07497845"
+dependencies = [
+ "cfg-if 1.0.0",
+ "crossbeam-channel",
+ "crossbeam-deque",
+ "crossbeam-epoch",
+ "crossbeam-queue",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.2"
@@ -740,6 +808,16 @@ dependencies = [
  "scopeguard",
 ]
 
+[[package]]
+name = "crossbeam-queue"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f25d8400f4a7a5778f0e4e52384a48cbd9b5c495d110786187fc750075277a2"
+dependencies = [
+ "cfg-if 1.0.0",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.7"
@@ -789,19 +867,43 @@ dependencies = [
  "dirs",
  "objc",
  "rust-ini",
- "winreg",
+ "winreg 0.8.0",
  "zbus",
  "zvariant",
 ]
 
+[[package]]
+name = "darling"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d706e75d87e35569db781a9b5e2416cff1236a47ed380831f959382ccd5f858"
+dependencies = [
+ "darling_core 0.10.2",
+ "darling_macro 0.10.2",
+]
+
 [[package]]
 name = "darling"
 version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0d720b8683f8dd83c65155f0530560cba68cd2bf395f6513a483caee57ff7f4"
 dependencies = [
- "darling_core",
- "darling_macro",
+ "darling_core 0.13.1",
+ "darling_macro 0.13.1",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0c960ae2da4de88a91b2d920c2a7233b400bc33cb28453a2987822d8392519b"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim 0.9.3",
+ "syn",
 ]
 
 [[package]]
@@ -818,13 +920,24 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "darling_macro"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b5a2f4ac4969822c62224815d069952656cadc7084fdca9751e6d959189b72"
+dependencies = [
+ "darling_core 0.10.2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "darling_macro"
 version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72c41b3b7352feb3211a0d743dc5700a4e3b60f51bd2b368892d1e0f9a95f44b"
 dependencies = [
- "darling_core",
+ "darling_core 0.13.1",
  "quote",
  "syn",
 ]
@@ -844,6 +957,16 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7046468a81e6a002061c01e6a7c83139daf91b11c30e66795b13217c2d885c8b"
 
+[[package]]
+name = "deflate"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73770f8e1fe7d64df17ca66ad28994a0a623ea497fa69486e14984e715c5d174"
+dependencies = [
+ "adler32",
+ "byteorder",
+]
+
 [[package]]
 name = "deflate"
 version = "1.0.0"
@@ -917,13 +1040,22 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd0c93bb4b0c6d9b77f4435b0ae98c24d17f1c45b2ff844c6151a07256ca923b"
 
+[[package]]
+name = "dlib"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b11f15d1e3268f140f68d390637d5e76d849782d971ae7063e0da69fe9709a76"
+dependencies = [
+ "libloading 0.6.7",
+]
+
 [[package]]
 name = "dlib"
 version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac1b7517328c04c2aa68422fc60a41b92208182142ed04a25879c26c8f878794"
 dependencies = [
- "libloading",
+ "libloading 0.7.3",
 ]
 
 [[package]]
@@ -978,7 +1110,7 @@ checksum = "6907e25393cdcc1f4f3f513d9aac1e840eb1cc341a0fccb01171f7d14d10b946"
 name = "eframe"
 version = "0.17.0"
 dependencies = [
- "egui",
+ "egui 0.17.0",
  "egui-winit",
  "egui_extras",
  "egui_glow",
@@ -986,10 +1118,20 @@ dependencies = [
  "ehttp",
  "epi",
  "glow",
- "image",
+ "image 0.24.1",
  "parking_lot 0.12.0",
  "poll-promise",
  "rfd",
+ "three-d",
+]
+
+[[package]]
+name = "egui"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77f9b394ccacc0cccb30f6de7371038a116931aa3186acd908b9ec61f405f15c"
+dependencies = [
+ "epaint 0.13.0",
 ]
 
 [[package]]
@@ -997,7 +1139,7 @@ name = "egui"
 version = "0.17.0"
 dependencies = [
  "ahash 0.7.6",
- "epaint",
+ "epaint 0.17.0",
  "nohash-hasher",
  "ron",
  "serde",
@@ -1010,7 +1152,7 @@ version = "0.17.0"
 dependencies = [
  "copypasta",
  "dark-light",
- "egui",
+ "egui 0.17.0",
  "epi",
  "glow",
  "instant",
@@ -1018,7 +1160,7 @@ dependencies = [
  "tracing",
  "tts",
  "webbrowser",
- "winit",
+ "winit 0.26.1",
 ]
 
 [[package]]
@@ -1038,12 +1180,12 @@ version = "0.17.0"
 dependencies = [
  "chrono",
  "criterion",
- "egui",
+ "egui 0.17.0",
  "egui_extras",
  "ehttp",
  "enum-map",
  "epi",
- "image",
+ "image 0.24.1",
  "poll-promise",
  "serde",
  "syntect",
@@ -1055,8 +1197,8 @@ dependencies = [
 name = "egui_extras"
 version = "0.17.0"
 dependencies = [
- "egui",
- "image",
+ "egui 0.17.0",
+ "image 0.24.1",
  "parking_lot 0.12.0",
  "resvg",
  "tiny-skia",
@@ -1069,10 +1211,10 @@ version = "0.17.0"
 dependencies = [
  "ahash 0.7.6",
  "bytemuck",
- "egui",
+ "egui 0.17.0",
  "egui-winit",
  "glium",
- "image",
+ "image 0.24.1",
 ]
 
 [[package]]
@@ -1080,11 +1222,11 @@ name = "egui_glow"
 version = "0.17.0"
 dependencies = [
  "bytemuck",
- "egui",
+ "egui 0.17.0",
  "egui-winit",
  "epi",
  "glow",
- "glutin",
+ "glutin 0.28.0",
  "memoffset",
  "parking_lot 0.12.0",
  "tracing",
@@ -1097,7 +1239,7 @@ name = "egui_web"
 version = "0.17.0"
 dependencies = [
  "bytemuck",
- "egui",
+ "egui 0.17.0",
  "egui_glow",
  "epi",
  "js-sys",
@@ -1130,6 +1272,12 @@ version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
 
+[[package]]
+name = "emath"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80eea7508c08a7b4e2a041adcdca6f400d8606622c6bb980ecbbdc5f1aff9a4c"
+
 [[package]]
 name = "emath"
 version = "0.17.0"
@@ -1139,6 +1287,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7896dc8abb250ffdda33912550faa54c88ec8b998dec0b2c55ab224921ce11df"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
 [[package]]
 name = "enum-map"
 version = "2.0.2"
@@ -1194,6 +1351,19 @@ dependencies = [
  "termcolor",
 ]
 
+[[package]]
+name = "epaint"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "132e30d483d9fa252fe06aa112de777d068503c379fa51bc5834204ee3258fce"
+dependencies = [
+ "ab_glyph",
+ "ahash 0.7.6",
+ "atomic_refcell",
+ "emath 0.13.0",
+ "ordered-float",
+]
+
 [[package]]
 name = "epaint"
 version = "0.17.0"
@@ -1203,7 +1373,7 @@ dependencies = [
  "bytemuck",
  "cint",
  "criterion",
- "emath",
+ "emath 0.17.0",
  "nohash-hasher",
  "parking_lot 0.12.0",
  "serde",
@@ -1214,7 +1384,7 @@ name = "epi"
 version = "0.17.0"
 dependencies = [
  "directories-next",
- "egui",
+ "egui 0.17.0",
  "glow",
  "ron",
  "serde",
@@ -1316,6 +1486,15 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "futures-channel"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3083ce4b914124575708913bca19bfe887522d6e2e6d0952943f5eac4a74010"
+dependencies = [
+ "futures-core",
+]
+
 [[package]]
 name = "futures-core"
 version = "0.3.21"
@@ -1469,7 +1648,7 @@ dependencies = [
  "backtrace",
  "fnv",
  "gl_generator",
- "glutin",
+ "glutin 0.28.0",
  "lazy_static",
  "memoffset",
  "smallvec",
@@ -1482,6 +1661,16 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
+[[package]]
+name = "gloo-timers"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d12a7f4e95cfe710f1d624fb1210b7d961a5fb05c4fd942f4feab06e61f590e"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "glow"
 version = "0.11.2"
@@ -1494,6 +1683,70 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "gltf"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ff38b75359a0096dd0a8599b6e4f37a6ee41d5df300cc7669e62aafa697f7a2"
+dependencies = [
+ "base64 0.12.3",
+ "byteorder",
+ "gltf-json",
+ "image 0.23.14",
+ "lazy_static",
+]
+
+[[package]]
+name = "gltf-derive"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f2a9333e0f9c7bca94dfc20bcf44fa12a61eeec662d6e007563ff748aa59c70"
+dependencies = [
+ "inflections",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "gltf-json"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1414d3a98cbaabdb2f134328b1f6036d14b282febc1df51952a435d2ca17fb6"
+dependencies = [
+ "gltf-derive",
+ "serde",
+ "serde_derive",
+ "serde_json",
+]
+
+[[package]]
+name = "glutin"
+version = "0.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "762d6cd2e1b855d99668ebe591cc9058659d85ac39a9a2078000eb122ddba8f0"
+dependencies = [
+ "android_glue",
+ "cgl",
+ "cocoa",
+ "core-foundation 0.9.3",
+ "glutin_egl_sys",
+ "glutin_emscripten_sys",
+ "glutin_gles2_sys",
+ "glutin_glx_sys",
+ "glutin_wgl_sys",
+ "lazy_static",
+ "libloading 0.7.3",
+ "log",
+ "objc",
+ "osmesa-sys",
+ "parking_lot 0.11.2",
+ "wayland-client 0.28.6",
+ "wayland-egl 0.28.6",
+ "winapi",
+ "winit 0.25.0",
+]
+
 [[package]]
 name = "glutin"
 version = "0.28.0"
@@ -1510,15 +1763,15 @@ dependencies = [
  "glutin_glx_sys",
  "glutin_wgl_sys",
  "lazy_static",
- "libloading",
+ "libloading 0.7.3",
  "log",
  "objc",
  "osmesa-sys",
  "parking_lot 0.11.2",
- "wayland-client",
- "wayland-egl",
+ "wayland-client 0.29.4",
+ "wayland-egl 0.29.4",
  "winapi",
- "winit",
+ "winit 0.26.1",
 ]
 
 [[package]]
@@ -1595,11 +1848,35 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "h2"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62eeb471aa3e3c9197aa4bfeabfe02982f6dc96f750486c0bb0009ac58b26d2b"
+dependencies = [
+ "bytes",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "http",
+ "indexmap",
+ "slab",
+ "tokio",
+ "tokio-util",
+ "tracing",
+]
+
 [[package]]
 name = "half"
 version = "1.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eabb4a44450da02c90444cf74558da904edde8fb4e9035a9a6a4e15445af0bd7"
+dependencies = [
+ "num-traits",
+ "serde",
+ "zerocopy",
+]
 
 [[package]]
 name = "hashbrown"
@@ -1637,12 +1914,83 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "http"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31f4c6746584866f0feabcc69893c5b51beef3831656a968ed7ae254cdc4fd03"
+dependencies = [
+ "bytes",
+ "fnv",
+ "itoa 1.0.1",
+]
+
+[[package]]
+name = "http-body"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ff4f84919677303da5f147645dbea6b1881f368d03ac84e1dc09031ebd7b2c6"
+dependencies = [
+ "bytes",
+ "http",
+ "pin-project-lite",
+]
+
+[[package]]
+name = "httparse"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9100414882e15fb7feccb4897e5f0ff0ff1ca7d1a86a23208ada4d7a18e6c6c4"
+
+[[package]]
+name = "httpdate"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
+
 [[package]]
 name = "humantime"
 version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
+[[package]]
+name = "hyper"
+version = "0.14.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "043f0e083e9901b6cc658a77d1eb86f4fc650bbb977a4337dd63192826aa85dd"
+dependencies = [
+ "bytes",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "httparse",
+ "httpdate",
+ "itoa 1.0.1",
+ "pin-project-lite",
+ "socket2",
+ "tokio",
+ "tower-service",
+ "tracing",
+ "want",
+]
+
+[[package]]
+name = "hyper-tls"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6183ddfa99b85da61a140bea0efc93fdf56ceaa041b37d553518030827f9905"
+dependencies = [
+ "bytes",
+ "hyper",
+ "native-tls",
+ "tokio",
+ "tokio-native-tls",
+]
+
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -1660,6 +2008,25 @@ dependencies = [
  "unicode-normalization",
 ]
 
+[[package]]
+name = "image"
+version = "0.23.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24ffcb7e7244a9bf19d35bf2883b9c080c4ced3c07a9895572178cdb8f13f6a1"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+ "color_quant",
+ "gif",
+ "jpeg-decoder 0.1.22",
+ "num-iter",
+ "num-rational 0.3.2",
+ "num-traits",
+ "png 0.16.8",
+ "scoped_threadpool",
+ "tiff",
+]
+
 [[package]]
 name = "image"
 version = "0.24.1"
@@ -1669,11 +2036,11 @@ dependencies = [
  "bytemuck",
  "byteorder",
  "color_quant",
- "jpeg-decoder",
+ "jpeg-decoder 0.2.2",
  "num-iter",
- "num-rational",
+ "num-rational 0.4.0",
  "num-traits",
- "png",
+ "png 0.17.3",
 ]
 
 [[package]]
@@ -1687,8 +2054,14 @@ dependencies = [
 ]
 
 [[package]]
-name = "instant"
-version = "0.1.12"
+name = "inflections"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a257582fdcde896fd96463bf2d40eefea0580021c0712a0e2b028b60b47a837a"
+
+[[package]]
+name = "instant"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
 dependencies = [
@@ -1698,6 +2071,12 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "ipnet"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35e70ee094dc02fd9c13fdad4940090f22dbd6ac7c9e7094a46cf0232a50bc7c"
+
 [[package]]
 name = "itertools"
 version = "0.10.3"
@@ -1739,6 +2118,12 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 
+[[package]]
+name = "jpeg-decoder"
+version = "0.1.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "229d53d58899083193af11e15917b5640cd40b29ff475a1fe4ef725deb02d0f2"
+
 [[package]]
 name = "jpeg-decoder"
 version = "0.2.2"
@@ -1787,12 +2172,45 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
+[[package]]
+name = "lexical"
+version = "5.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f404a90a744e32e8be729034fc33b90cf2a56418fbf594d69aa3c0214ad414e5"
+dependencies = [
+ "cfg-if 1.0.0",
+ "lexical-core",
+]
+
+[[package]]
+name = "lexical-core"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6607c62aa161d23d17a9072cc5da0be67cdfc89d3afb1e8d9c842bebc2525ffe"
+dependencies = [
+ "arrayvec 0.5.2",
+ "bitflags",
+ "cfg-if 1.0.0",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.119"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1bf2e165bb3457c8e098ea76f3e3bc9db55f87aa90d52d0e6be741470916aaa4"
 
+[[package]]
+name = "libloading"
+version = "0.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "351a32417a12d5f7e82c368a66781e307834dae04c6ce0cd4456d52989229883"
+dependencies = [
+ "cfg-if 1.0.0",
+ "winapi",
+]
+
 [[package]]
 name = "libloading"
 version = "0.7.3"
@@ -1803,6 +2221,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "libm"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33a33a362ce288760ec6a508b94caaec573ae7d3bbbd91b87aa0bad4456839db"
+
 [[package]]
 name = "line-wrap"
 version = "0.1.1"
@@ -1857,6 +2281,15 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
 
+[[package]]
+name = "memmap2"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b70ca2a6103ac8b665dc150b142ef0e4e89df640c9e6cf295d189c3caebe5a"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "memmap2"
 version = "0.3.1"
@@ -1884,12 +2317,27 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "mime"
+version = "0.3.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
+
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
+[[package]]
+name = "miniz_oxide"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "791daaae1ed6889560f8c4359194f56648355540573244a5448a83ba1ecc7435"
+dependencies = [
+ "adler32",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.4.4"
@@ -1915,6 +2363,19 @@ version = "0.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e53debba6bda7a793e5f99b8dacf19e626084f525f7829104ba9898f367d85ff"
 
+[[package]]
+name = "mio"
+version = "0.7.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8067b404fe97c70829f082dec8bcf4f71225d7eaea1d8645349cb76fa06205cc"
+dependencies = [
+ "libc",
+ "log",
+ "miow",
+ "ntapi",
+ "winapi",
+]
+
 [[package]]
 name = "mio"
 version = "0.8.0"
@@ -1928,6 +2389,18 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "mio-misc"
+version = "1.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b47412f3a52115b936ff2a229b803498c7b4d332adeb87c2f1498c9da54c398c"
+dependencies = [
+ "crossbeam",
+ "crossbeam-queue",
+ "log",
+ "mio 0.7.14",
+]
+
 [[package]]
 name = "miow"
 version = "0.3.7"
@@ -1937,6 +2410,36 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "native-tls"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48ba9f7719b5a0f42f338907614285fb5fd70e53858141f69898a1fb7203b24d"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "log",
+ "openssl",
+ "openssl-probe",
+ "openssl-sys",
+ "schannel",
+ "security-framework",
+ "security-framework-sys",
+ "tempfile",
+]
+
+[[package]]
+name = "ndk"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8794322172319b972f528bf90c6b467be0079f1fa82780ffb431088e741a73ab"
+dependencies = [
+ "jni-sys",
+ "ndk-sys 0.2.2",
+ "num_enum",
+ "thiserror",
+]
+
 [[package]]
 name = "ndk"
 version = "0.5.0"
@@ -1969,6 +2472,20 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4e3c5cc68637e21fe8f077f6a1c9e0b9ca495bb74895226b476310f613325884"
 
+[[package]]
+name = "ndk-glue"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c5caf0c24d51ac1c905c27d4eda4fa0635bbe0de596b8f79235e0b17a4d29385"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "log",
+ "ndk 0.3.0",
+ "ndk-macro 0.2.0",
+ "ndk-sys 0.2.2",
+]
+
 [[package]]
 name = "ndk-glue"
 version = "0.5.1"
@@ -1980,7 +2497,7 @@ dependencies = [
  "log",
  "ndk 0.5.0",
  "ndk-context",
- "ndk-macro",
+ "ndk-macro 0.3.0",
  "ndk-sys 0.2.2",
 ]
 
@@ -1995,18 +2512,31 @@ dependencies = [
  "log",
  "ndk 0.6.0",
  "ndk-context",
- "ndk-macro",
+ "ndk-macro 0.3.0",
  "ndk-sys 0.3.0",
 ]
 
+[[package]]
+name = "ndk-macro"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05d1c6307dc424d0f65b9b06e94f88248e6305726b14729fd67a5e47b2dc481d"
+dependencies = [
+ "darling 0.10.2",
+ "proc-macro-crate 0.1.5",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "ndk-macro"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0df7ac00c4672f9d5aece54ee3347520b7e20f158656c7db2e6de01902eb7a6c"
 dependencies = [
- "darling",
- "proc-macro-crate",
+ "darling 0.13.1",
+ "proc-macro-crate 1.1.2",
  "proc-macro2",
  "quote",
  "syn",
@@ -2027,6 +2557,30 @@ dependencies = [
  "jni-sys",
 ]
 
+[[package]]
+name = "nix"
+version = "0.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83450fe6a6142ddd95fb064b746083fc4ef1705fe81f64a64e1d4b39f54a1055"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if 0.1.10",
+ "libc",
+]
+
+[[package]]
+name = "nix"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa9b4819da1bc61c0ea48b63b7bc8604064dd43013e7cc325df098d49cd7c18a"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if 1.0.0",
+ "libc",
+]
+
 [[package]]
 name = "nix"
 version = "0.22.3"
@@ -2100,6 +2654,17 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-rational"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12ac428b1cb17fce6f731001d307d351ec70a6d202fc2e60f7d4c5e42d8f4f07"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-rational"
 version = "0.4.0"
@@ -2118,6 +2683,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
 dependencies = [
  "autocfg",
+ "libm",
 ]
 
 [[package]]
@@ -2145,7 +2711,7 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0d992b768490d7fe0d8586d9b5745f6c49f557da6d81dc982b1d167ad4edbb21"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.2",
  "proc-macro2",
  "quote",
  "syn",
@@ -2220,6 +2786,48 @@ version = "11.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ab1bc2a289d34bd04a330323ac98a1b4bc82c9d9fcb1e66b63caa84da26b575"
 
+[[package]]
+name = "openssl"
+version = "0.10.38"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c7ae222234c30df141154f159066c5093ff73b63204dcda7121eb082fc56a95"
+dependencies = [
+ "bitflags",
+ "cfg-if 1.0.0",
+ "foreign-types",
+ "libc",
+ "once_cell",
+ "openssl-sys",
+]
+
+[[package]]
+name = "openssl-probe"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
+
+[[package]]
+name = "openssl-sys"
+version = "0.9.72"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e46109c383602735fa0a2e48dd2b7c892b048e1bf69e5c3b1d804b7d9c203cb"
+dependencies = [
+ "autocfg",
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
+[[package]]
+name = "ordered-float"
+version = "2.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7940cf2ca942593318d07fcf2596cdca60a85c9e7fab408a5e21a4f9dcd40d87"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "ordered-multimap"
 version = "0.3.1"
@@ -2249,6 +2857,15 @@ dependencies = [
  "shared_library",
 ]
 
+[[package]]
+name = "owned_ttf_parser"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f923fb806c46266c02ab4a5b239735c144bdeda724a50ed058e5226f594cde3"
+dependencies = [
+ "ttf-parser 0.6.2",
+]
+
 [[package]]
 name = "owned_ttf_parser"
 version = "0.14.0"
@@ -2366,7 +2983,7 @@ version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd39bc6cdc9355ad1dc5eeedefee696bb35c34caf21768741e81826c0bbd7225"
 dependencies = [
- "base64",
+ "base64 0.13.0",
  "indexmap",
  "line-wrap",
  "serde",
@@ -2402,6 +3019,18 @@ dependencies = [
  "plotters-backend",
 ]
 
+[[package]]
+name = "png"
+version = "0.16.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c3287920cb847dee3de33d301c463fba14dda99db24214ddf93f83d3021f4c6"
+dependencies = [
+ "bitflags",
+ "crc32fast",
+ "deflate 0.8.6",
+ "miniz_oxide 0.3.7",
+]
+
 [[package]]
 name = "png"
 version = "0.17.3"
@@ -2410,7 +3039,7 @@ checksum = "8e8f1882177b17c98ec33a51f5910ecbf4db92ca0def706781a1f8d0c661f393"
 dependencies = [
  "bitflags",
  "crc32fast",
- "deflate",
+ "deflate 1.0.0",
  "miniz_oxide 0.5.1",
 ]
 
@@ -2442,6 +3071,15 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
+[[package]]
+name = "proc-macro-crate"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d6ea3c4595b96363c13943497db34af4460fb474a95c43f4446ad341b8c9785"
+dependencies = [
+ "toml",
+]
+
 [[package]]
 name = "proc-macro-crate"
 version = "1.1.2"
@@ -2509,6 +3147,16 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "raw-window-handle"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e28f55143d0548dad60bb4fbdc835a3d7ac6acc3324506450c5fdd6e42903a76"
+dependencies = [
+ "libc",
+ "raw-window-handle 0.4.2",
+]
+
 [[package]]
 name = "raw-window-handle"
 version = "0.4.2"
@@ -2591,6 +3239,51 @@ version = "0.6.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
 
+[[package]]
+name = "remove_dir_all"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "reqwest"
+version = "0.11.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46a1f7aa4f35e5e8b4160449f51afc758f0ce6454315a9fa7d0d113e958c41eb"
+dependencies = [
+ "base64 0.13.0",
+ "bytes",
+ "encoding_rs",
+ "futures-core",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "hyper",
+ "hyper-tls",
+ "ipnet",
+ "js-sys",
+ "lazy_static",
+ "log",
+ "mime",
+ "native-tls",
+ "percent-encoding",
+ "pin-project-lite",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "tokio",
+ "tokio-native-tls",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "winreg 0.10.1",
+]
+
 [[package]]
 name = "resvg"
 version = "0.22.0"
@@ -2598,10 +3291,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2e702d1e8e00a3a0717b96244cba840f34f542d8f23097c8903266c4e2975658"
 dependencies = [
  "gif",
- "jpeg-decoder",
+ "jpeg-decoder 0.2.2",
  "log",
  "pico-args",
- "png",
+ "png 0.17.3",
  "rgb",
  "svgfilters",
  "svgtypes",
@@ -2626,7 +3319,7 @@ dependencies = [
  "objc",
  "objc-foundation",
  "objc_id",
- "raw-window-handle",
+ "raw-window-handle 0.4.2",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
@@ -2663,7 +3356,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b861ecaade43ac97886a512b360d01d66be9f41f3c61088b42cedf92e03d678"
 dependencies = [
- "base64",
+ "base64 0.13.0",
  "bitflags",
  "serde",
 ]
@@ -2720,6 +3413,16 @@ dependencies = [
  "webpki",
 ]
 
+[[package]]
+name = "rusttype"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc7c727aded0be18c5b80c1640eae0ac8e396abf6fa8477d96cb37d18ee5ec59"
+dependencies = [
+ "ab_glyph_rasterizer",
+ "owned_ttf_parser 0.6.0",
+]
+
 [[package]]
 name = "rustybuzz"
 version = "0.5.0"
@@ -2766,12 +3469,28 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "schannel"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f05ba609c234e60bee0d547fe94a4c7e9da733d1c962cf6e59efa4cd9c8bc75"
+dependencies = [
+ "lazy_static",
+ "winapi",
+]
+
 [[package]]
 name = "scoped-tls"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
 
+[[package]]
+name = "scoped_threadpool"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -2788,6 +3507,29 @@ dependencies = [
  "untrusted",
 ]
 
+[[package]]
+name = "security-framework"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dc14f172faf8a0194a3aded622712b0de276821addc574fa54fc0a1167e10dc"
+dependencies = [
+ "bitflags",
+ "core-foundation 0.9.3",
+ "core-foundation-sys 0.8.3",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0160a13a177a45bfb43ce71c01580998474f556ad854dcbca936dd2841a5c556"
+dependencies = [
+ "core-foundation-sys 0.8.3",
+ "libc",
+]
+
 [[package]]
 name = "semver"
 version = "1.0.5"
@@ -2846,6 +3588,18 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_urlencoded"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
+dependencies = [
+ "form_urlencoded",
+ "itoa 1.0.1",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "sha1"
 version = "0.6.1"
@@ -2922,6 +3676,25 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2dd574626839106c320a323308629dcb1acfc96e32a8cba364ddc61ac23ee83"
 
+[[package]]
+name = "smithay-client-toolkit"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4750c76fd5d3ac95fa3ed80fe667d6a3d8590a960e5b575b98eea93339a80b80"
+dependencies = [
+ "andrew",
+ "bitflags",
+ "calloop 0.6.5",
+ "dlib 0.4.2",
+ "lazy_static",
+ "log",
+ "memmap2 0.1.0",
+ "nix 0.18.0",
+ "wayland-client 0.28.6",
+ "wayland-cursor 0.28.6",
+ "wayland-protocols 0.28.6",
+]
+
 [[package]]
 name = "smithay-client-toolkit"
 version = "0.15.3"
@@ -2929,16 +3702,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1325f292209cee78d5035530932422a30aa4c8fda1a16593ac083c1de211e68a"
 dependencies = [
  "bitflags",
- "calloop",
- "dlib",
+ "calloop 0.9.3",
+ "dlib 0.5.0",
  "lazy_static",
  "log",
  "memmap2 0.3.1",
  "nix 0.22.3",
  "pkg-config",
- "wayland-client",
- "wayland-cursor",
- "wayland-protocols",
+ "wayland-client 0.29.4",
+ "wayland-cursor 0.29.4",
+ "wayland-protocols 0.29.4",
 ]
 
 [[package]]
@@ -2947,8 +3720,8 @@ version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "610b551bd25378bfd2b8e7a0fcbd83d427e8f2f6a40c47ae0f70688e9949dd55"
 dependencies = [
- "smithay-client-toolkit",
- "wayland-client",
+ "smithay-client-toolkit 0.15.3",
+ "wayland-client 0.29.4",
 ]
 
 [[package]]
@@ -2998,6 +3771,12 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
+[[package]]
+name = "strsim"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -3034,6 +3813,18 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "synstructure"
+version = "0.12.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "unicode-xid",
+]
+
 [[package]]
 name = "syntect"
 version = "4.6.0"
@@ -3075,6 +3866,20 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "36ae8932fcfea38b7d3883ae2ab357b0d57a02caaa18ebb4f5ece08beaec4aa0"
 
+[[package]]
+name = "tempfile"
+version = "3.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cdb1ef4eaeeaddc8fbd371e5017057064af0911902ef36b39801f67cc6d79e4"
+dependencies = [
+ "cfg-if 1.0.0",
+ "fastrand",
+ "libc",
+ "redox_syscall",
+ "remove_dir_all",
+ "winapi",
+]
+
 [[package]]
 name = "termcolor"
 version = "1.1.2"
@@ -3122,6 +3927,42 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "three-d"
+version = "0.11.0"
+source = "git+https://github.com/asny/three-d?rev=d9e613d209e45b214fdb96e06ea9907e7a03d4dc#d9e613d209e45b214fdb96e06ea9907e7a03d4dc"
+dependencies = [
+ "cgmath",
+ "egui 0.13.1",
+ "gl_generator",
+ "gloo-timers",
+ "glow",
+ "gltf",
+ "glutin 0.27.0",
+ "half",
+ "image 0.23.14",
+ "js-sys",
+ "log",
+ "reqwest",
+ "serde",
+ "thiserror",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wavefront_obj",
+ "web-sys",
+]
+
+[[package]]
+name = "tiff"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a53f4706d65497df0c4349241deddf35f84cee19c87ed86ea8ca590f4464437"
+dependencies = [
+ "jpeg-decoder 0.1.22",
+ "miniz_oxide 0.4.4",
+ "weezl",
+]
+
 [[package]]
 name = "time"
 version = "0.1.43"
@@ -3153,7 +3994,7 @@ dependencies = [
  "arrayvec 0.5.2",
  "bytemuck",
  "cfg-if 1.0.0",
- "png",
+ "png 0.17.3",
  "safe_arch",
 ]
 
@@ -3182,6 +4023,45 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
+[[package]]
+name = "tokio"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2af73ac49756f3f7c01172e34a23e5d0216f6c32333757c2c61feb2bbff5a5ee"
+dependencies = [
+ "bytes",
+ "libc",
+ "memchr",
+ "mio 0.8.0",
+ "pin-project-lite",
+ "socket2",
+ "winapi",
+]
+
+[[package]]
+name = "tokio-native-tls"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7d995660bd2b7f8c1568414c1126076c13fbb725c40112dc0120b78eb9b717b"
+dependencies = [
+ "native-tls",
+ "tokio",
+]
+
+[[package]]
+name = "tokio-util"
+version = "0.6.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e99e1983e5d376cd8eb4b66604d2e99e79f5bd988c3055891dcd8c9e2604cc0"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "log",
+ "pin-project-lite",
+ "tokio",
+]
+
 [[package]]
 name = "toml"
 version = "0.5.8"
@@ -3191,6 +4071,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "tower-service"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "360dfd1d6d30e05fda32ace2c8c70e9c0a9da713275777f5a4dbb8a1893930c6"
+
 [[package]]
 name = "tracing"
 version = "0.1.31"
@@ -3260,6 +4146,18 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "try-lock"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
+
+[[package]]
+name = "ttf-parser"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e5d7cd7ab3e47dda6e56542f4bbf3824c15234958c6e1bd6aaa347e93499fdc"
+
 [[package]]
 name = "ttf-parser"
 version = "0.14.0"
@@ -3368,7 +4266,7 @@ version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9399fa2f927a3d327187cbd201480cee55bee6ac5d3c77dd27f0c6814cff16d5"
 dependencies = [
- "base64",
+ "base64 0.13.0",
  "chunked_transfer",
  "flate2",
  "log",
@@ -3397,7 +4295,7 @@ version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a261d60a7215fa339482047cc3dafd4e22e2bf34396aaebef2b707355bbb39c0"
 dependencies = [
- "base64",
+ "base64 0.13.0",
  "data-url",
  "flate2",
  "float-cmp",
@@ -3424,6 +4322,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "vec_map"
 version = "0.8.2"
@@ -3459,6 +4363,16 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "want"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
+dependencies = [
+ "log",
+ "try-lock",
+]
+
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
@@ -3472,6 +4386,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25f1af7423d8588a3d840681122e72e6a24ddbcb3f0ec385cac0d12d24256c06"
 dependencies = [
  "cfg-if 1.0.0",
+ "serde",
+ "serde_json",
  "wasm-bindgen-macro",
 ]
 
@@ -3531,6 +4447,31 @@ version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d958d035c4438e28c70e4321a2911302f10135ce78a9c7834c0cab4123d06a2"
 
+[[package]]
+name = "wavefront_obj"
+version = "10.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b44bbcea20221556597a89462dba84fd4a1ece9a56ab9ec017f872f33b34e8a"
+dependencies = [
+ "lexical",
+]
+
+[[package]]
+name = "wayland-client"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3ab332350e502f159382201394a78e3cc12d0f04db863429260164ea40e0355"
+dependencies = [
+ "bitflags",
+ "downcast-rs",
+ "libc",
+ "nix 0.20.0",
+ "scoped-tls",
+ "wayland-commons 0.28.6",
+ "wayland-scanner 0.28.6",
+ "wayland-sys 0.28.6",
+]
+
 [[package]]
 name = "wayland-client"
 version = "0.29.4"
@@ -3542,9 +4483,21 @@ dependencies = [
  "libc",
  "nix 0.22.3",
  "scoped-tls",
- "wayland-commons",
- "wayland-scanner",
- "wayland-sys",
+ "wayland-commons 0.29.4",
+ "wayland-scanner 0.29.4",
+ "wayland-sys 0.29.4",
+]
+
+[[package]]
+name = "wayland-commons"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a21817947c7011bbd0a27e11b17b337bfd022e8544b071a2641232047966fbda"
+dependencies = [
+ "nix 0.20.0",
+ "once_cell",
+ "smallvec",
+ "wayland-sys 0.28.6",
 ]
 
 [[package]]
@@ -3556,7 +4509,18 @@ dependencies = [
  "nix 0.22.3",
  "once_cell",
  "smallvec",
- "wayland-sys",
+ "wayland-sys 0.29.4",
+]
+
+[[package]]
+name = "wayland-cursor"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be610084edd1586d45e7bdd275fe345c7c1873598caa464c4fb835dee70fa65a"
+dependencies = [
+ "nix 0.20.0",
+ "wayland-client 0.28.6",
+ "xcursor",
 ]
 
 [[package]]
@@ -3566,18 +4530,40 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c52758f13d5e7861fc83d942d3d99bf270c83269575e52ac29e5b73cb956a6bd"
 dependencies = [
  "nix 0.22.3",
- "wayland-client",
+ "wayland-client 0.29.4",
  "xcursor",
 ]
 
+[[package]]
+name = "wayland-egl"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99ba1ab1e18756b23982d36f08856d521d7df45015f404a2d7c4f0b2d2f66956"
+dependencies = [
+ "wayland-client 0.28.6",
+ "wayland-sys 0.28.6",
+]
+
 [[package]]
 name = "wayland-egl"
 version = "0.29.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "83281d69ee162b59031c666385e93bde4039ec553b90c4191cdb128ceea29a3a"
 dependencies = [
- "wayland-client",
- "wayland-sys",
+ "wayland-client 0.29.4",
+ "wayland-sys 0.29.4",
+]
+
+[[package]]
+name = "wayland-protocols"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "286620ea4d803bacf61fa087a4242ee316693099ee5a140796aaba02b29f861f"
+dependencies = [
+ "bitflags",
+ "wayland-client 0.28.6",
+ "wayland-commons 0.28.6",
+ "wayland-scanner 0.28.6",
 ]
 
 [[package]]
@@ -3587,9 +4573,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "60147ae23303402e41fe034f74fb2c35ad0780ee88a1c40ac09a3be1e7465741"
 dependencies = [
  "bitflags",
- "wayland-client",
- "wayland-commons",
- "wayland-scanner",
+ "wayland-client 0.29.4",
+ "wayland-commons 0.29.4",
+ "wayland-scanner 0.29.4",
+]
+
+[[package]]
+name = "wayland-scanner"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce923eb2deb61de332d1f356ec7b6bf37094dc5573952e1c8936db03b54c03f1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "xml-rs",
 ]
 
 [[package]]
@@ -3603,13 +4600,24 @@ dependencies = [
  "xml-rs",
 ]
 
+[[package]]
+name = "wayland-sys"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d841fca9aed7febf9bed2e9796c49bf58d4152ceda8ac949ebe00868d8f0feb8"
+dependencies = [
+ "dlib 0.5.0",
+ "lazy_static",
+ "pkg-config",
+]
+
 [[package]]
 name = "wayland-sys"
 version = "0.29.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9341df79a8975679188e37dab3889bfa57c44ac2cb6da166f519a81cbe452d4"
 dependencies = [
- "dlib",
+ "dlib 0.5.0",
  "lazy_static",
  "pkg-config",
 ]
@@ -3776,6 +4784,38 @@ version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "504a2476202769977a040c6364301a3f65d0cc9e3fb08600b2bda150a0488316"
 
+[[package]]
+name = "winit"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79610794594d5e86be473ef7763f604f2159cbac8c94debd00df8fb41e86c2f8"
+dependencies = [
+ "bitflags",
+ "cocoa",
+ "core-foundation 0.9.3",
+ "core-graphics 0.22.3",
+ "core-video-sys",
+ "dispatch",
+ "instant",
+ "lazy_static",
+ "libc",
+ "log",
+ "mio 0.7.14",
+ "mio-misc",
+ "ndk 0.3.0",
+ "ndk-glue 0.3.0",
+ "ndk-sys 0.2.2",
+ "objc",
+ "parking_lot 0.11.2",
+ "percent-encoding",
+ "raw-window-handle 0.3.4",
+ "scopeguard",
+ "smithay-client-toolkit 0.12.3",
+ "wayland-client 0.28.6",
+ "winapi",
+ "x11-dl",
+]
+
 [[package]]
 name = "winit"
 version = "0.26.1"
@@ -3792,18 +4832,18 @@ dependencies = [
  "lazy_static",
  "libc",
  "log",
- "mio",
+ "mio 0.8.0",
  "ndk 0.5.0",
  "ndk-glue 0.5.1",
  "ndk-sys 0.2.2",
  "objc",
  "parking_lot 0.11.2",
  "percent-encoding",
- "raw-window-handle",
- "smithay-client-toolkit",
+ "raw-window-handle 0.4.2",
+ "smithay-client-toolkit 0.15.3",
  "wasm-bindgen",
- "wayland-client",
- "wayland-protocols",
+ "wayland-client 0.29.4",
+ "wayland-protocols 0.29.4",
  "web-sys",
  "winapi",
  "x11-dl",
@@ -3818,6 +4858,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "winreg"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "x11-clipboard"
 version = "0.5.3"
@@ -3858,6 +4907,15 @@ dependencies = [
  "nom",
 ]
 
+[[package]]
+name = "xdg"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c4583db5cbd4c4c0303df2d15af80f0539db703fa1c68802d4cbbd2dd0f88f6"
+dependencies = [
+ "dirs",
+]
+
 [[package]]
 name = "xml-rs"
 version = "0.8.4"
@@ -3928,7 +4986,7 @@ version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "36823cc10fddc3c6b19f048903262dacaf8274170e9a255784bdd8b4570a8040"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.2",
  "proc-macro2",
  "quote",
  "regex",
@@ -3946,6 +5004,27 @@ dependencies = [
  "zvariant",
 ]
 
+[[package]]
+name = "zerocopy"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "332f188cc1bcf1fe1064b8c58d150f497e697f49774aa846f2dc949d9a25f236"
+dependencies = [
+ "byteorder",
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0fbc82b82efe24da867ee52e015e58178684bd9dd64c34e66bdf21da2582a9f"
+dependencies = [
+ "proc-macro2",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zvariant"
 version = "3.1.2"
@@ -3966,7 +5045,7 @@ version = "3.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8c2cecc5a61c2a053f7f653a24cd15b3b0195d7f7ddb5042c837fb32e161fb7a"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.2",
  "proc-macro2",
  "quote",
  "syn",
diff --git a/eframe/Cargo.toml b/eframe/Cargo.toml
index a502ce465cbf..17a67684bf2a 100644
--- a/eframe/Cargo.toml
+++ b/eframe/Cargo.toml
@@ -74,3 +74,4 @@ image = { version = "0.24", default-features = false, features = [
 parking_lot = "0.12"
 poll-promise = "0.1"
 rfd = "0.8"
+three-d = { git = "https://github.com/asny/three-d", rev = "d9e613d209e45b214fdb96e06ea9907e7a03d4dc" } # 2022-03-22
diff --git a/eframe/examples/custom_3d_three-d.rs b/eframe/examples/custom_3d_three-d.rs
new file mode 100644
index 000000000000..9b8670a436af
--- /dev/null
+++ b/eframe/examples/custom_3d_three-d.rs
@@ -0,0 +1,159 @@
+//! This demo shows how to embed 3D rendering using [`three-d`](https://github.com/asny/three-d) in `eframe`.
+
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+#![allow(unsafe_code)]
+
+use eframe::egui;
+
+fn main() {
+    let options = eframe::NativeOptions::default();
+    eframe::run_native(
+        "Custom 3D painting in eframe",
+        options,
+        Box::new(|cc| Box::new(MyApp::new(cc))),
+    );
+}
+
+struct MyApp {
+    // three_d: three_d::Context,
+    angle: f32,
+    reuse_three_d: bool,
+}
+
+impl MyApp {
+    fn new(_cc: &eframe::CreationContext<'_>) -> Self {
+        Self {
+            // three_d: three_d::Context::from_gl_context(cc.gl.clone()).unwrap(),
+            angle: 0.0,
+            reuse_three_d: false,
+        }
+    }
+}
+
+impl eframe::App for MyApp {
+    fn update(&mut self, ctx: &egui::Context, _frame: &eframe::Frame) {
+        egui::CentralPanel::default().show(ctx, |ui| {
+            ui.horizontal(|ui| {
+                ui.spacing_mut().item_spacing.x = 0.0;
+                ui.label("The triangle is being painted using ");
+                ui.hyperlink_to("three-d", "https://github.com/asny/three-d");
+                ui.label(".");
+            });
+
+            ui.checkbox(&mut self.reuse_three_d, "Reuse three-d context");
+
+            egui::ScrollArea::both().show(ui, |ui| {
+                egui::Frame::dark_canvas(ui.style()).show(ui, |ui| {
+                    self.custom_painting(ui);
+                });
+                ui.label("Drag to rotate!");
+            });
+        });
+    }
+}
+
+impl MyApp {
+    fn custom_painting(&mut self, ui: &mut egui::Ui) {
+        let (rect, response) =
+            ui.allocate_exact_size(egui::Vec2::splat(256.0), egui::Sense::drag());
+
+        self.angle += response.drag_delta().x * 0.01;
+
+        // Clone locals so we can move them into the paint callback:
+        let angle = self.angle;
+        let reuse_three_d = self.reuse_three_d;
+        // let three_d = self.three_d.clone();
+
+        let callback = egui::PaintCallback {
+            rect,
+            callback: std::sync::Arc::new(move |render_ctx| {
+                if let Some(painter) = render_ctx.downcast_ref::<egui_glow::Painter>() {
+                    if reuse_three_d {
+                        with_three_d_context(painter.gl(), |three_d| {
+                            paint_with_three_d(three_d, rect, angle);
+                        });
+                    } else {
+                        let three_d =
+                            three_d::Context::from_gl_context(painter.gl().clone()).unwrap();
+                        paint_with_three_d(&three_d, rect, angle);
+                    }
+                } else {
+                    eprintln!("Can't do custom painting because we are not using a glow context");
+                }
+            }),
+        };
+        ui.painter().add(callback);
+    }
+}
+
+// TODO: make `three_d::Context` a member of `MyApp` instead.
+// Requires making `Shape`, and thus `Context`, `!Send + !Sync`.
+fn with_three_d_context<R>(
+    gl: &std::rc::Rc<glow::Context>,
+    f: impl FnOnce(&three_d::Context) -> R,
+) -> R {
+    use std::cell::RefCell;
+    thread_local! {
+        pub static THREE_D: RefCell<Option<three_d::Context>> = RefCell::new(None);
+    }
+
+    THREE_D.with(|three_d| {
+        let mut three_d = three_d.borrow_mut();
+        let three_d =
+            three_d.get_or_insert_with(|| three_d::Context::from_gl_context(gl.clone()).unwrap());
+        f(three_d)
+    })
+}
+
+fn paint_with_three_d(three_d: &three_d::Context, rect: egui::Rect, angle: f32) {
+    use three_d::*;
+
+    let viewport = Viewport {
+        x: rect.left() as _,
+        y: rect.top() as _,
+        width: rect.width() as _,
+        height: rect.height() as _,
+    };
+
+    // Create a camera
+    let mut camera = Camera::new_perspective(
+        &three_d,
+        viewport,
+        vec3(0.0, 0.0, 2.0),
+        vec3(0.0, 0.0, 0.0),
+        vec3(0.0, 1.0, 0.0),
+        degrees(45.0),
+        0.1,
+        10.0,
+    )
+    .unwrap();
+
+    // Create a CPU-side mesh consisting of a single colored triangle
+    let positions = vec![
+        vec3(0.5, -0.5, 0.0),  // bottom right
+        vec3(-0.5, -0.5, 0.0), // bottom left
+        vec3(0.0, 0.5, 0.0),   // top
+    ];
+    let colors = vec![
+        Color::new(255, 0, 0, 255), // bottom right
+        Color::new(0, 255, 0, 255), // bottom left
+        Color::new(0, 0, 255, 255), // top
+    ];
+    let cpu_mesh = CpuMesh {
+        positions: Positions::F32(positions),
+        colors: Some(colors),
+        ..Default::default()
+    };
+
+    // Construct a model, with a default color material, thereby transferring the mesh data to the GPU
+    let mut model = Model::new(&three_d, &cpu_mesh).unwrap();
+
+    // Ensure the viewport matches the current window viewport which changes if the window is resized
+    camera.set_viewport(viewport).unwrap();
+
+    // Set the current transformation of the triangle
+    model.set_transformation(Mat4::from_angle_y(radians(angle)));
+
+    // Render the triangle with the color material which uses the per vertex colors defined at construction
+    model.render(&camera, &[]).unwrap();
+}