imgur for user images

[gre]

• [x] User could be allowed to use imgur images in a sampler2D uniform.
• [ ] imgur have an API that we can benefit: We could try to upload directly from GLSL.io.
• [ ] [minor] We may allow the user to customise all from and to images. That may just be a user aesthetic.

[rectalogic]

I'm not sure imgur supports CORS which would be required for this to work. http://imgur.userecho.com/topic/105409-enable-cross-origin-resource-sharing-cors/

[gre]

You don't need CORS to be supported if you are requested the image anonymously with img.crossOrigin="Anonymous".

I've just tested with a random image from imgur and it works.

[gre]

[gre]

https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image

[rectalogic]

Oh, actually it looks like imgur does support CORS. Just did a test image with crossorigin and got these response headers:

HTTP/1.1 200 OK
Date: Wed, 18 Jun 2014 19:25:00 GMT
Server: cat factory 1.0
Last-Modified: Wed, 18 Jun 2014 07:50:49 GMT
ETag: "e765f2c68628170252b82301797e408e"
Content-Type: image/jpeg
cache-control: public, max-age=31536000
Content-Length: 103247
Accept-Ranges: bytes
Age: 41651
X-Served-By: cache-iad2127-IAD, cache-lax1433-LAX
X-Cache: MISS, HIT
X-Cache-Hits: 0, 17855
X-Timer: S1403119500.841635,VS0,VE0
Access-Control-Allow-Methods: GET, OPTIONS
Access-Control-Allow-Origin: *
Keep-Alive: timeout=10, max=50
Connection: Keep-Alive

Without CORS you may be able to load the texture but the canvas would be tainted.

[gre]

ok cool

[gre]

imgur URL are supported, leaving the extra features for later, overkill for now.