Shaders & Meson fix (funky-station#2322)

* shaders fix & meson fix

* chore: Automatically update REUSE headers

---------

Co-authored-by: funkystationbot <funky@funkystation.org>

Author: YaraaraY

Content.Client/Glasses/GlassesOverlaySystem.cs

@@ -1,3 +1,4 @@
+// SPDX-FileCopyrightText: 2025 MaiaArai <158123176+YaraaraY@users.noreply.github.com>
 // SPDX-FileCopyrightText: 2025 YaraaraY <158123176+YaraaraY@users.noreply.github.com>
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
@@ -32,20 +33,7 @@ private void OnHandleState(EntityUid uid, GlassesOverlayComponent component, ref
         component.Enabled = state.Enabled;
         component.Shader = state.Shader;
         component.Color = state.Color;
-
-        // DIRECT UPDATE (Bypassing Relay)
-        // Manually refresh the local provider list
-        if (component.Enabled)
-        {
-            _overlay.Providers.Add(component);
-        }
-        else
-        {
-            _overlay.Providers.Remove(component);
-        }
-
-        // No explicit Refresh() method needed for GlassesOverlay usually,
-        // as it checks Providers.Any() in BeforeDraw, but if it has one, call it.
+        RefreshOverlay();
     }
 
     protected override void UpdateInternal(RefreshEquipmentHudEvent<GlassesOverlayComponent> args)
@@ -55,7 +43,6 @@ protected override void UpdateInternal(RefreshEquipmentHudEvent<GlassesOverlayCo
         if (!_overlayMan.HasOverlay<GlassesOverlay>())
             _overlayMan.AddOverlay(_overlay);
 
-        // Note: The original code used a HashSet of components
         _overlay.Providers = args.Components.Where(c => c.Enabled).ToHashSet();
     }
 

Resources/Textures/Shaders/goggles.swsl

@@ -1,16 +1,18 @@
 uniform sampler2D SCREEN_TEXTURE;
 uniform lowp vec4 color;
 uniform lowp int lineCount;
-uniform lowp float scanlineIntensity; // 0 - 1
+uniform lowp float scanlineIntensity;
 uniform lowp float alpha;
 uniform lowp float distortionStrength;
-uniform lowp float flicker; // 0 - 1
+uniform lowp float flicker;
 uniform lowp float beamLength;
 uniform lowp float beamSpeed;
 
 const highp float PI = 3.14159265;
 
 void fragment() {
+    precision highp float;
+
     highp vec2 uv = FRAGCOORD.xy * SCREEN_PIXEL_SIZE.xy;
 
     highp vec2 center = uv - 0.5;
@@ -28,8 +30,9 @@ void fragment() {
     scanline = 1.0 - (scanline * scanlineIntensity);
 
     lowp vec3 finalColor = tinted * scanline;
-    lowp float flicker = flicker + (1- flicker) * sin(TIME * 50.0); // fuck the us
-    finalColor *= flicker;
+
+    lowp float flickerEffect = flicker + (1.0 - flicker) * sin(TIME * 50.0);
+    finalColor *= flickerEffect;
 
     lowp float beam = smoothstep(0.0, beamLength, abs(fract(uv.y + TIME * beamSpeed)));
     finalColor = mix(finalColor, finalColor * beam * 0.2, beam);

Resources/Textures/Shaders/xray.swsl

@@ -6,6 +6,8 @@ uniform lowp float scanlineSpeed;
 uniform lowp float alpha;
 
 void fragment() {
+    precision highp float;
+
     lowp vec4 tex = texture2D(TEXTURE, UV);
     tex.a *= alpha;
     lowp vec3 base = tex.rgb * color.rgb;