mirror of
https://github.com/DanielnetoDotCom/YouPHPTube
synced 2025-10-03 17:59:55 +02:00
51 lines
971 B
JavaScript
51 lines
971 B
JavaScript
/**
|
|
* Normal map shader
|
|
* - compute normals from heightmap
|
|
*/
|
|
|
|
THREE.NormalMapShader = {
|
|
|
|
uniforms: {
|
|
|
|
'heightMap': { value: null },
|
|
'resolution': { value: new THREE.Vector2( 512, 512 ) },
|
|
'scale': { value: new THREE.Vector2( 1, 1 ) },
|
|
'height': { value: 0.05 }
|
|
|
|
},
|
|
|
|
vertexShader: [
|
|
|
|
'varying vec2 vUv;',
|
|
|
|
'void main() {',
|
|
|
|
' vUv = uv;',
|
|
' gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',
|
|
|
|
'}'
|
|
|
|
].join( '\n' ),
|
|
|
|
fragmentShader: [
|
|
|
|
'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 );',
|
|
|
|
'}'
|
|
|
|
].join( '\n' )
|
|
|
|
};
|