From 9f0a659853619fba9ed627fd7988dbe859f40041 Mon Sep 17 00:00:00 2001
From: Jay Oster <jay@kodewerx.org>
Date: Fri, 14 Apr 2023 13:31:01 -0700
Subject: [PATCH] Enable all wgpu backends (#356)

- This will allow `pixels` to run on platforms that have OpenGL without any extra configuration.
- It is better to allow wgpu to fallback to OpenGL than to select a Vulkan software rasterizer. This is the case on WSL2, where the only hardware-based adapter is available with the GLES backend.
- Fixes #354
---
 src/builder.rs | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/src/builder.rs b/src/builder.rs
index 70f53f9..905c21b 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -53,17 +53,7 @@ impl<'req, 'dev, 'win, W: HasRawWindowHandle + HasRawDisplayHandle>
         Self {
             request_adapter_options: None,
             device_descriptor: None,
-            backend: wgpu::util::backend_bits_from_env().unwrap_or({
-                #[cfg(not(target_arch = "wasm32"))]
-                {
-                    wgpu::Backends::PRIMARY
-                }
-
-                #[cfg(target_arch = "wasm32")]
-                {
-                    wgpu::Backends::all()
-                }
-            }),
+            backend: wgpu::util::backend_bits_from_env().unwrap_or_else(wgpu::Backends::all),
             width,
             height,
             _pixel_aspect_ratio: 1.0,
@@ -94,7 +84,7 @@ impl<'req, 'dev, 'win, W: HasRawWindowHandle + HasRawDisplayHandle>
 
     /// Set which backends wgpu will attempt to use.
     ///
-    /// The default value is `PRIMARY`, which enables the well supported backends for wgpu.
+    /// The default enables all backends, including the backends with "best effort" support in wgpu.
     pub fn wgpu_backend(mut self, backend: wgpu::Backends) -> Self {
         self.backend = backend;
         self