Use two layers for `image::atlas` only on `Gl` backend

1 files changed, 9 insertions, 5 deletions

diff --git a/wgpu/src/image/atlas.rs b/wgpu/src/image/atlas.rs
index 0919f6df..ea36e06d 100644
--- a/wgpu/src/image/atlas.rs
+++ b/wgpu/src/image/atlas.rs
@@ -23,11 +23,15 @@ pub struct Atlas {
 }
 
 impl Atlas {
-    pub fn new(device: &wgpu::Device) -> Self {
-        // We start with 2 layers, to help wgpu figure out that this texture is `GL_TEXTURE_2D_ARRAY` rather
-        // than `GL_TEXTURE_2D`
-        // https://github.com/gfx-rs/wgpu/blob/004e3efe84a320d9331371ed31fa50baa2414911/wgpu-hal/src/gles/mod.rs#L371
-        let layers = vec![Layer::Empty, Layer::Empty];
+    pub fn new(device: &wgpu::Device, backend: wgpu::Backend) -> Self {
+        let layers = match backend {
+            // On the GL backend we start with 2 layers, to help wgpu figure
+            // out that this texture is `GL_TEXTURE_2D_ARRAY` rather than `GL_TEXTURE_2D`
+            // https://github.com/gfx-rs/wgpu/blob/004e3efe84a320d9331371ed31fa50baa2414911/wgpu-hal/src/gles/mod.rs#L371
+            wgpu::Backend::Gl => vec![Layer::Empty, Layer::Empty],
+            _ => vec![Layer::Empty],
+        };
+
         let extent = wgpu::Extent3d {
             width: SIZE,
             height: SIZE,