Blindness refactor (#15705)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Resources/Textures/Shaders/dim.swsl

@@ -1,12 +0,0 @@
-uniform highp float DAMAGE_AMOUNT;
-
-void fragment() {
-
-     // Higher exponent -> stronger blinding effect
-
-     // Gradually mixes between the texture mix and a full-white texture, causing the "blinding" effect
-     highp vec4 mixed = mix(vec4(1.0, 1.0, 1.0, 1.0), vec4(1.0, 1.0, 1.0, 1.0), DAMAGE_AMOUNT);
-
-     COLOR = vec4(mixed.rgb, DAMAGE_AMOUNT);
-}
-