-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathindex.html
444 lines (332 loc) · 8.14 KB
/
index.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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
<!DOCTYPE html>
<html>
<head>
<title>Demystifying the 3D Web</title>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.1/jquery.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r75/three.min.js"></script>
<body onload="onStart()">
<div class="animation-container"></div>
<textarea id="source">
class: center, middle, cover
name: title
# Demystifying the 3D Web
## Pietro Grandi
### @PietroGrandi3D
???
- what is the 3d web
- what is webgl
- see some frameworks
- case studies
- security issues
---
# Hi!
## Pietro Grandi
1. Frontend dev at [BetssonGroup](http://www.betssongroup.com/)
2. Working with WebGL since 2012
3. Born as 3D Artist
---
# Pietro Grandi
## Community
1. [Khronos Chapter Milano](http://www.meetup.com/Khronos-Milano-Chapter/)
2. [OTS WebGL workshop](www.opentechschool.org/milan/)
3. [NodeSchool WebGL workshop](www.eventbrite.com/e/nodeschool-interactive-3d-con-webgl-e-threejs-tickets-18538741876)
---
class: center, middle
.question[
# Why the web?
]
---
# Why the web?
## Web is everywhere
1. Desktop
2. Mobile
3. Wearable
---
# Why the web?
## Browser as environment for applications
1. Fast JS interpreter
2. Standards
3. One stack, more platforms
---
class: center, middle
.question[
# Why WebGL?
]
---
# Why WebGL?
## WebGL
1. Native API
2. Porting of [OpenGL ES 2.0](https://www.khronos.org/opengles/2_X/)
3. GPU access
4. Maintained by [Khronos Group](https://www.khronos.org/)
---
# Why WebGL?
## Native API
1. Access through JavaScript
2. No plugin required
3. Context from canvas
---
# Why WebGL?
## OpenGL
1. Industry standard
2. Shader based pipeline
3. [Khronos Group](https://www.khronos.org/)
---
# Why WebGL?
## The Khronos Group
1. Founded in January 2000
2. [Including ATI, Intel, NVIDIA...](https://www.khronos.org/members/member_list)
3. Creating open standard APIs for rich media
???
OpenGl, OpenCL, Collada, OpenKCam,...
---
# Why WebGL?
## Shaders
1. Define rules for visualization
2. Vertex shader for geometry
3. Fragment shader for pixels
???
roughly:
VS used to calculate position
FS used to calculate color
---
# Why WebGL?
## Shaders
1. Take parameters
2. Compiled
5. Use [GLSL 1.0](https://www.khronos.org/files/opengles_shading_language.pdf)
---
# Why WebGL?
## Shader pipeline
1. Link shaders
2. Load geometry data
3. Draw data
---
# Why WebGL?
## Immediate mode API
1. Scene is redrawn each time
2. No scene caching
3. Scene is managed by the application
---
# Why WebGL?
## Support
.logos[
]
.footernote[
All product names, logos, and brands are property of their respective owners.
]
???
Chrome the first, then Firefox.
Microsoft in 2013 and Apple (mobile) in 2014
---
class: center, middle
.question[
# Yet another JS framework???
]
---
# Why frameworks?
## WebGL API offers primitives
1. Points and connections
2. Triangles and connections
3. Colors
4. Textures
---
# Why frameworks?
## World is bigger
1. Polygons
2. Solids
3. Fluids
4. Materials
---
# Why frameworks?
## A trivial example
1. [A red square in 52 lines](http://codepen.io/pietro909/pen/mPwmgx)
2. [A red square in 21 lines](http://codepen.io/pietro909/pen/VaWbOM)
---
class: center, middle
.question[
# So, is there a killer framework?
]
---
# Which framework?
## The biggest
1. [ThreeJS](http://threejs.org/)
2. [BabylonJS](http://www.babylonjs.com/)
3. [OSGJS](http://osgjs.org/)
4. [SceneJS](http://scenejs.org/)
---
# Which framework?
## ThreeJS
1. Developed for Flash
2. Community driven development
3. Game engine
4. MIT License
???
example http://codepen.io/pietro909/pen/rewwNe
---
# Which framework?
## BabylonJS
1. Developed for Silverlight
2. Supported by Microsoft
3. Game engine
4. Apache license 2.0
???
example http://codepen.io/pietro909/pen/PNjjoy?editors=0010
---
# Which framework?
## OSGJS
1. Based on OpenSceneGraph
2. Used by [Sketchfab](https://sketchfab.com/)
3. Rendering engine
4. MIT License
---
# Which framework?
## SceneJS
1. Rendering engine
2. Declarative approach
3. Used by [BioDigital Human](https://www.biodigital.com/)
4. Custom OSS License
---
# Not just 3D
## What about 2D?
1. Shaders for 2D effects
3. GPU powered rendering
4. Filters
5. Texture blending
???
https://www.airtightinteractive.com/demos/js/badtvshader/
---
# Not just 3D
## [PixiJS](http://www.pixijs.com/)
1. Fast rendering engine
2. Support animations
3. [WebGL blend and filters](http://www.goodboydigital.com/new-year-new-pixi/)
---
class: center, middle
.question[
# Cool.
## Is someone REALLY using it?
]
---
# Case study
## Google maps
1. Big data visualization
2. Draw vectors instead of tiles
3. Boost performances
???
- https://googleblog.blogspot.it/2011/10/step-inside-map-with-google-mapsgl.html
---
# Case study
## Autodesk
1. [A360 Viewer](https://a360.autodesk.com/viewer)
2. [Revit WebGL Publisher](https://apps.autodesk.com/RVT/en/Detail/HelpDoc?id=appstore.exchange.autodesk.com%3Awebgl-publisherrevitexport%3Aen)
3. Using ThreeJS
4. Formerly using Flash
---
# Case study
## Autodesk
1. [API](http://developer-autodesk.github.io/) for developer
2. Convert models
3. Display 3D
---
# Case study
## Unity
1. WebGL target as of 5.3
2. Compiles to JS with [Emscripten](https://github.com/kripken/emscripten)
3. Custom framework
???
- http://blogs.unity3d.com/2015/12/07/unity-5-3-webgl-updates/
---
class: center, middle
.question[
# Big companies spend money.
## Have you ever used it in production?
]
---
# Me
## Yes, I did it!
1. UI to navigate environments
2. Data visualization
3. Online 3D viewer
???
https://sketchfab.com/models/add520232c1c49c6b937be1522bacc1b
---
class: center, middle
.question[
# Have you read [Microsoft's security report](https://blogs.technet.microsoft.com/srd/2011/06/16/webgl-considered-harmful/)?
]
---
# Security
## Graphics is weak
1. Real time calls for performances
2. Less checks
3. Buffer overflow, illegal memory access, DOS
---
# Security
## Untrusted code
1. Web applications are not installed
2. Giving hardware access can be harmful
3. No control
---
# Security
## WebGL is not OpenGL
1. New allocated memory is zeored
2. Pixels outside framebuffer are set to (0,0,0,0)
3. Array buffers have fixed size
---
# Security
## Unknown sources
1. Cross origin assets are forbidden
4. Only CORS validated resources can be loaded
---
# Security
## Denial of service
1. OS can reset the GPU
2. .bold[GL_ARB_robustness] has been introduced
3. WebGL implementation could detect GPU reset
---
class: last, middle
# Thank you!
## @PietroGrandi3D
### [pietrograndi.com](www.pietrograndi.com)
.footnote[
]
---
# References
.references[
- [WebGL programming guide, Kouichi Matsuda](http://www.goodreads.com/book/show/16269927-webgl-programming-guide)
- [WebGL security, Khronos Group](https://www.khronos.org/webgl/security/)
- [WebGL considered harmful, Microsoft 2011](https://blogs.technet.microsoft.com/srd/2011/06/16/webgl-considered-harmful/)
- [Unity WebGL updates, Jonas Echterhoff 2015](http://blogs.unity3d.com/2015/12/07/unity-5-3-webgl-updates/)
- [Step inside the map with Google MapsGL, Brian McLendon 2011](https://googleblog.blogspot.ae/2011/10/step-inside-map-with-google-mapsgl.html)
- [WWDC 2014, Apple](https://developer.apple.com/videos/wwdc2014/)
- [Announcing an updated version of Internet Explorer 11, Microsoft 2014](https://blogs.msdn.microsoft.com/ie/2014/04/02/announcing-an-updated-version-of-internet-explorer-11-available-on-windows-8-1-windows-7-and-windows-phone-8-1/)
]
---
class: middle
# We are hiring!
## Betsson Group
### http://www.betssongroup.com/Jobs
</textarea>
<canvas id="animation" class="background3d"></canvas>
<script src="bower_components/remark/out/remark.min.js">
</script>
<script>
var slideshow = remark.create();
</script>
<script src="start3d.js"></script>
</body>
</html>