Remove extra MSAA filter (backport #8779) [release/5.3.x] (#8784)

Co-authored-by: Paul Connelly <[email protected]>
Co-authored-by: Arun George <[email protected]>

Author: 3 people

common/changes/@itwin/core-frontend/pmc-fix-extra-msaa-filter_2025-11-18-15-30.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-frontend",
+      "comment": "Fix background color displaying instead of sky box on certain hardware.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-frontend"
+}

core/frontend/src/internal/render/webgl/SceneCompositor.ts

@@ -343,7 +343,7 @@ class FrameBuffers implements WebGLDisposable {
         undefined !== textures.depthAndOrderMsBuffHidden
       );
       const colorAndPickMsBuffs = [textures.colorMsBuff, textures.featureIdMsBuff, textures.depthAndOrderMsBuff];
-      const colorAndPickFilters = [GL.MultiSampling.Filter.Linear, GL.MultiSampling.Filter.Nearest, GL.MultiSampling.Filter.Nearest, GL.MultiSampling.Filter.Nearest];
+      const colorAndPickFilters = [GL.MultiSampling.Filter.Linear, GL.MultiSampling.Filter.Nearest, GL.MultiSampling.Filter.Nearest];
       this.opaqueAll = FrameBuffer.create(colorAndPick, depth, colorAndPickMsBuffs, colorAndPickFilters, depthMs);
       colorAndPick[0] = textures.color;
       this.opaqueAndCompositeAll = FrameBuffer.create(colorAndPick, depth, colorAndPickMsBuffs, colorAndPickFilters, depthMs);