From 7f3ca3c97ed0256fda52551abd06d71a00f7ed88 Mon Sep 17 00:00:00 2001
From: scamiv <6170744+scamiv@users.noreply.github.com>
Date: Fri, 26 Dec 2025 19:11:05 +0100
Subject: [PATCH] Update GameRenderer to disable alpha channel in GameRenderer
 2D context (#2699)

## Description:

Updated the main onscreen canvas context to opaque:
Impact: avoids alpha compositing for the main canvas (we already paint a
full opaque background each frame), which can slightly reduce GPU work.

## Please complete the following:

- [ ] I have added screenshots for all UI updates
- [ ] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [ ] I have added relevant tests to the test directory
- [ ] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

DISCORD_USERNAME
---
 src/client/graphics/GameRenderer.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/client/graphics/GameRenderer.ts b/src/client/graphics/GameRenderer.ts
index 301dc3486..152a82587 100644
--- a/src/client/graphics/GameRenderer.ts
+++ b/src/client/graphics/GameRenderer.ts
@@ -298,7 +298,7 @@ export class GameRenderer {
     private layers: Layer[],
     private performanceOverlay: PerformanceOverlay,
   ) {
-    const context = canvas.getContext("2d");
+    const context = canvas.getContext("2d", { alpha: false });
     if (context === null) throw new Error("2d context not supported");
     this.context = context;
   }