webgl floating point textures update

Question

Created Jun ’20

Replies 7

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Is there a particular date when apple will make it possible to render to floating point textures in webgl via safari? Currently you can read from them and you can use the half float extension (which hasn't worked as needed for me so far), but rendering to floating point textures isn't currently available.

It's really sad that I picked up a crappy $39.95 android tablet from Walmart which allows it and runs sone beautiful 3D geometry, but my several hundred dollar iPhone or any iOS device can't. Is there a reason apple decided to make webgl partially functional in iOS?

Answered by Apple Staff in 612593022

Floating point renderbuffer targets are an optional extension in WebGL 1 and 2. We simply haven't implemented them yet. We'll consider this a feature request. Thanks!!

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Answer 1

Apple Staff OP

Apple

Jun ’20

Accepted Answer

Floating point renderbuffer targets are an optional extension in WebGL 1 and 2. We simply haven't implemented them yet. We'll consider this a feature request. Thanks!!

4

Answer 2

ballsjohnson1234 OP

Jun ’20

Just to clarify, you're saying that one can currently enable the extension for floats, but it won't work because the floating point texture feature hasn't actually been implemented?

Just want to be sure what you're saying.

thanks

BJ1234

1

Answer 3

ballsjohnson1234 OP

Jun ’20

My second question is, when and how can I find out whether or not this feature has been added?

Since I'm assuming that information gets posted somewhere, can you direct me to site?

1

Answer 4

Frameworks Engineer OP

Apple

Jun ’20

Look for a mention in the release notes when new versions of Safari Technology Preview are released. The notes are available in our blog at webkit.org. Download STP, try it out, and give us feedback at bugs.webkit.org.

2

Answer 5

ballsjohnson1234 OP

Jun ’20

Ok great

about my first question:

"Just to clarify, you're saying that one can currently enable the extension for floats, but it won't work because the floating point texture feature hasn't actually been implemented?"

Is this correct? Just want to confirm what you stated earlier.

BJ1234

0

Answer 6

ballsjohnson1234 OP

Jun ’20

In addition, the documentation on features for webgl1 only refer me to Khronos.org, which is makes no mention of iOS safari, apple, and only one mention of even mobile devices. Again:

"Just to clarify, you're saying that one can currently enable the extension for floats, but it won't work because the floating point texture feature hasn't actually been implemented?"

thanks

BJ1234

0

Answer 7

ballsjohnson1234 OP

Jul ’20

hey Frameworks engineer, can you answer my above question so I can give you the little checkmark?

thanks

BJ1234

0