From f58ff49c46d380a01dad33370a9aa2f4ec383580 Mon Sep 17 00:00:00 2001
From: code002lover <code002lover@ipost.rocks>
Date: Sat, 6 Dec 2025 21:07:10 +0100
Subject: [PATCH] Refactor: simplify iResolution uniform calculation by
 removing devicePixelRatio scaling and using `gl.uniform3fv`.

---
 frontend/src/ShaderBackground.tsx | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/frontend/src/ShaderBackground.tsx b/frontend/src/ShaderBackground.tsx
index 832fa19..73f8a69 100644
--- a/frontend/src/ShaderBackground.tsx
+++ b/frontend/src/ShaderBackground.tsx
@@ -993,13 +993,10 @@ export function ShaderBackground() {
           "iResolution uniform not found (maybe not used by shader)."
         );
       } else {
-        // Optionally convert to physical pixels:
-        const dpr = window.devicePixelRatio || 1;
-        const w = canvas.clientWidth * dpr;
-        const h = canvas.clientHeight * dpr;
+        const w = canvas.width;
+        const h = canvas.height;
 
-        // set as vec3: x = width, y = height, z = pixel aspect (often 1.0)
-        gl.uniform3f(loc, w, h, 1.0);
+        gl.uniform3fv(loc, [w, h, 1]);
       }
     }