From c6d3cb672db7717edffc68d09f0c8ae119a0a594 Mon Sep 17 00:00:00 2001
From: Andrew Hamilton <and_hamilton@yahoo.com>
Date: Wed, 22 Jul 2026 22:28:14 +1000
Subject: [PATCH] Use downlevel_limits for RPi5 compatibility

Limits::default() requests max_color_attachments=8, but RPi5 Vulkan
only supports 4. downlevel_defaults() uses 4, which is all we need.
---
 src/renderer.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/renderer.rs b/src/renderer.rs
index 3971cbf..932de33 100644
--- a/src/renderer.rs
+++ b/src/renderer.rs
@@ -106,7 +106,7 @@ pub fn start(
         &wgpu::DeviceDescriptor {
             label: None,
             required_features: wgpu::Features::PASSTHROUGH_SHADERS,
-            required_limits: wgpu::Limits::default(),
+            required_limits: wgpu::Limits::downlevel_defaults(),
             experimental_features: wgpu::ExperimentalFeatures::disabled(),
             memory_hints: wgpu::MemoryHints::Performance,
             trace: wgpu::Trace::Off,