feat: initialize project with core dependencies and game entry point

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

@@ -0,0 +1,74 @@
+import {
+	Vector2
+} from 'three';
+
+/**
+ * @module ConvolutionShader
+ * @three_import import { ConvolutionShader } from 'three/addons/shaders/ConvolutionShader.js';
+ */
+
+/**
+ * Convolution shader ported from o3d sample to WebGL / GLSL.
+ *
+ * @constant
+ * @type {ShaderMaterial~Shader}
+ */
+const ConvolutionShader = {
+
+	name: 'ConvolutionShader',
+
+	defines: {
+
+		'KERNEL_SIZE_FLOAT': '25.0',
+		'KERNEL_SIZE_INT': '25'
+
+	},
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'uImageIncrement': { value: new Vector2( 0.001953125, 0.0 ) },
+		'cKernel': { value: [] }
+
+	},
+
+	vertexShader: /* glsl */`
+
+		uniform vec2 uImageIncrement;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv - ( ( KERNEL_SIZE_FLOAT - 1.0 ) / 2.0 ) * uImageIncrement;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform float cKernel[ KERNEL_SIZE_INT ];
+
+		uniform sampler2D tDiffuse;
+		uniform vec2 uImageIncrement;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vec2 imageCoord = vUv;
+			vec4 sum = vec4( 0.0, 0.0, 0.0, 0.0 );
+
+			for( int i = 0; i < KERNEL_SIZE_INT; i ++ ) {
+
+				sum += texture2D( tDiffuse, imageCoord ) * cKernel[ i ];
+				imageCoord += uImageIncrement;
+
+			}
+
+			gl_FragColor = sum;
+
+		}`
+};
+
+export { ConvolutionShader };