moved two tunnels closer to each other and combined left and right vignette...

moved two tunnels closer to each other and combined left and right vignette effect before applying to the renderTarget.

src/systems/shaderlib/VignetteShader.js

@@ -31,8 +31,8 @@ THREE.VignetteShader = {
 
 		"void main() {",
 			"vec4 texel = texture2D( tDiffuse, vUv);",
-			"vec2 uvLeft = (vUv.xy) - vec2(0.25, 0.5);",
-			"vec2 uvRight = (vUv.xy) - vec2(0.75, 0.5);",
+			"vec2 uvLeft = (vUv.xy) - vec2(0.3, 0.5);",
+			"vec2 uvRight = (vUv.xy) - vec2(0.7, 0.5);",
 			"float ratio = resolution.x / resolution.y;",
       "uvLeft.x *= ratio;",
 			"uvRight.x *= ratio;",
@@ -40,8 +40,8 @@ THREE.VignetteShader = {
 			"float lenRight = length(uvRight);",
       "float vignetteLeft = smoothstep(radius, radius-softness, lenLeft);",
 			"float vignetteRight = smoothstep(radius, radius-softness, lenRight);",
-			"vec3 final = mix (texel.rgb, texel.rgb * vignetteLeft, opacity);",
-			"final += mix(texel.rgb, texel.rgb * vignetteRight, opacity);",
+			"float vignette = vignetteLeft + vignetteRight;",
+			"vec3 final = mix (texel.rgb, texel.rgb * vignette, opacity);",
       "gl_FragColor = vec4(final.rgb, 1.0);",
 		"}"