feat: initialize project with core dependencies and game entry point

node_modules/three/examples/jsm/shaders/VignetteShader.js

@@ -0,0 +1,56 @@
+/**
+ * @module VignetteShader
+ * @three_import import { VignetteShader } from 'three/addons/shaders/VignetteShader.js';
+ */
+
+/**
+ * Based on [PaintEffect postprocess from ro.me](http://code.google.com/p/3-dreams-of-black/source/browse/deploy/js/effects/PaintEffect.js).
+ *
+ * @constant
+ * @type {ShaderMaterial~Shader}
+ */
+const VignetteShader = {
+
+	name: 'VignetteShader',
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'offset': { value: 1.0 },
+		'darkness': { value: 1.0 }
+
+	},
+
+	vertexShader: /* glsl */`
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform float offset;
+		uniform float darkness;
+
+		uniform sampler2D tDiffuse;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			// Eskil's vignette
+
+			vec4 texel = texture2D( tDiffuse, vUv );
+			vec2 uv = ( vUv - vec2( 0.5 ) ) * vec2( offset );
+			gl_FragColor = vec4( mix( texel.rgb, vec3( 1.0 - darkness ), dot( uv, uv ) ), texel.a );
+
+		}`
+
+};
+
+export { VignetteShader };