969f602dd4
Fixed-step world runtime, event bus wire protocol between lanes, integration seam (game.ts) with placeholder ball. Lanes A/B/C own disjoint dirs. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
56 lines
995 B
JavaScript
56 lines
995 B
JavaScript
import {
|
|
Vector2
|
|
} from 'three';
|
|
|
|
/**
|
|
* Normal map shader
|
|
* - compute normals from heightmap
|
|
*/
|
|
|
|
const NormalMapShader = {
|
|
|
|
name: 'NormalMapShader',
|
|
|
|
uniforms: {
|
|
|
|
'heightMap': { value: null },
|
|
'resolution': { value: new Vector2( 512, 512 ) },
|
|
'scale': { value: new Vector2( 1, 1 ) },
|
|
'height': { value: 0.05 }
|
|
|
|
},
|
|
|
|
vertexShader: /* glsl */`
|
|
|
|
varying vec2 vUv;
|
|
|
|
void main() {
|
|
|
|
vUv = uv;
|
|
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
|
|
|
|
}`,
|
|
|
|
fragmentShader: /* glsl */`
|
|
|
|
uniform float height;
|
|
uniform vec2 resolution;
|
|
uniform sampler2D heightMap;
|
|
|
|
varying vec2 vUv;
|
|
|
|
void main() {
|
|
|
|
float val = texture2D( heightMap, vUv ).x;
|
|
|
|
float valU = texture2D( heightMap, vUv + vec2( 1.0 / resolution.x, 0.0 ) ).x;
|
|
float valV = texture2D( heightMap, vUv + vec2( 0.0, 1.0 / resolution.y ) ).x;
|
|
|
|
gl_FragColor = vec4( ( 0.5 * normalize( vec3( val - valU, val - valV, height ) ) + 0.5 ), 1.0 );
|
|
|
|
}`
|
|
|
|
};
|
|
|
|
export { NormalMapShader };
|