This thread is for questions and discussions related to John McDonald’s Alpha Blending: To Pre or Not To Pre blog post.
Hello,
The WebGL Test at the end of the article fails to appear on multiple browsers, presumably because the source image request returns a 404 not found:
GET https://developer.nvidia.com/sites/default/files/akamai/gamedev/images/2x1-rg-pre-webgl.png 404 ()
GET https://developer.nvidia.com/sites/default/files/akamai/gamedev/images/1x1-rg-pre-webgl.png 404 ()
GET https://developer.nvidia.com/sites/default/files/akamai/gamedev/images/2x1-rg-post-webgl.png 404 ()
GET https://developer.nvidia.com/sites/default/files/akamai/gamedev/images/mandrill-512x512.png 404 ()
This information was gathered using Inspect element on Chrome v60 (latest stable) on Windows 10 64-bit
It would be great if this simple error could be fixed as these articles are a great resource to help colleagues and students learn these concepts, and are a representation of Nvidia as a leader in the industry.
Thanks
- Landon Thomas
Failing again in 2024, the same images now return error 403 / forbidden.
Hello,
All the images load for me. The broken link is a Microsoft page.
https://devblogs.microsoft.com/shawnhar/premultiplied-alpha.aspx
We have no control over this.
Hi,
Thank you for your prompt response!
Note the URL I’m visiting is:
I notice the path to image URLs have changed (or Firefox is failing to show me a redirect):
https://d29g4g2dyqv443.cloudfront.net/sites/default/files/akamai/gamedev/images/2x1-rg-pre-webgl.png
https://d29g4g2dyqv443.cloudfront.net/sites/default/files/akamai/gamedev/images/1x1-rg-pre-webgl.png
https://d29g4g2dyqv443.cloudfront.net/sites/default/files/akamai/gamedev/images/2x1-rg-post-webgl.png
…/images/mandrill-512x512.png (can’t post more than 4 links)
Maybe the images are already cached in your computer?