我在平面512px * 512px(100×100段)的平面上有一个位移图,因为位移图的图像向左滚动顶点到高度位置并不平滑,我一直在看混合()函数和平滑步()将时间变换为他们的位置,但我很难实施它.
- uniform sampler2D heightText; //texture greyscale 512x512
- uniform float displace;
- uniform float time;
- uniform float speed;
- varying vec2 vUV;
- varying float scaleDisplace;
- void main() {
- vUV = uv;
- vec2 uvOffset = vUV + vec2( 0.1,0.1)* time; // animates offset
- vec2 uvCo = vUV + vec2( 0.0,0.0);
- vec2 texSize = vec2(-0.8,0.8); // scales image larger
- vec4 data = texture2D( heightText,uvOffset + fract(uvCo)*texSize.x);
- scaleDisplace = data.r;
- //vec3 possy = normal * displace * scaleDisplace;
- vec3 morPHPossy = mix( position,normal *displace,scaleDisplace)* time ;
- gl_Position = projectionMatrix * modelViewMatrix * vec4(morPHPossy,1.0 );
- }
使用具有顶点和像素的Three.js 71:
插图目的:
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解决方法
由于您使用纹理作为高度图,您应该确保:
- heightText.magFilter = THREE.LinearFilter; // This is the default value.
以便您收到的值平滑到纹素.