forked from Soft8Soft/verge3d-code-examples
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathwebgl2_materials_texture2darray.html
193 lines (129 loc) · 4.96 KB
/
webgl2_materials_texture2darray.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - 2D texture array</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<script id="vs" type="x-shader/x-vertex">
uniform vec2 size;
out vec2 vUv;
void main() {
gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
// Convert position.xy to 1.0-0.0
vUv.xy = position.xy / size + 0.5;
vUv.y = 1.0 - vUv.y; // original data is upside down
}
</script>
<script id="fs" type="x-shader/x-fragment">
precision highp float;
precision highp int;
precision highp sampler2DArray;
uniform sampler2DArray diffuse;
in vec2 vUv;
uniform int depth;
out vec4 outColor;
void main() {
vec4 color = texture(diffuse, vec3(vUv, depth));
// lighten a bit
outColor = vec4(color.rrr * 1.5, 1.0);
}
</script>
<body>
<div id="info">
<a href="https://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> -2D Texture array<br />
Scanned head data by
<a href="https://www.codeproject.com/Articles/352270/Getting-started-with-Volume-Rendering" target="_blank" rel="noopener">Divine Augustine</a><br />
licensed under
<a href="https://www.codeproject.com/info/cpol10.aspx" target="_blank" rel="noopener">CPOL</a>
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"v3d": "../build/v3d.module.js",
"v3d/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as v3d from 'v3d';
import Stats from 'v3d/addons/libs/stats.module.js';
import { unzipSync } from 'v3d/addons/libs/fflate.module.js';
import WebGL from 'v3d/addons/capabilities/WebGL.js';
if (WebGL.isWebGL2Available() === false) {
document.body.appendChild(WebGL.getWebGL2ErrorMessage());
}
let camera, scene, mesh, renderer, stats;
const planeWidth = 50;
const planeHeight = 50;
let depthStep = 0.4;
init();
animate();
function init() {
const container = document.createElement('div');
document.body.appendChild(container);
camera = new v3d.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 2000);
camera.position.z = 70;
scene = new v3d.Scene();
// width 256, height 256, depth 109, 8-bit, zip archived raw data
new v3d.FileLoader()
.setResponseType('arraybuffer')
.load('textures/3d/head256x256x109.zip', function(data) {
const zip = unzipSync(new Uint8Array(data));
const array = new Uint8Array(zip['head256x256x109'].buffer);
const texture = new v3d.DataArrayTexture(array, 256, 256, 109);
texture.format = v3d.RedFormat;
texture.needsUpdate = true;
const material = new v3d.ShaderMaterial({
uniforms: {
diffuse: { value: texture },
depth: { value: 55 },
size: { value: new v3d.Vector2(planeWidth, planeHeight) }
},
vertexShader: document.getElementById('vs').textContent.trim(),
fragmentShader: document.getElementById('fs').textContent.trim(),
glslVersion: v3d.GLSL3
});
const geometry = new v3d.PlaneGeometry(planeWidth, planeHeight);
mesh = new v3d.Mesh(geometry, material);
scene.add(mesh);
});
// 2D Texture array is available on WebGL 2.0
renderer = new v3d.WebGLRenderer();
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
container.appendChild(renderer.domElement);
stats = new Stats();
container.appendChild(stats.dom);
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
if (mesh) {
let value = mesh.material.uniforms['depth'].value;
value += depthStep;
if (value > 109.0 || value < 0.0) {
if (value > 1.0) value = 109.0 * 2.0 - value;
if (value < 0.0) value = -value;
depthStep = -depthStep;
}
mesh.material.uniforms['depth'].value = value;
}
render();
stats.update();
}
function render() {
renderer.render(scene, camera);
}
</script>
</body>
</html>