Re: Misc: Applications of small floating point formats.

On 8/1/2024 11:51 PM, BGB wrote:

On 8/1/2024 9:28 PM, Lawrence D'Oliveiro wrote:

On Thu, 1 Aug 2024 19:17:00 -0500, BGB wrote:
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On 8/1/2024 6:09 PM, Lawrence D'Oliveiro wrote:
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On Thu, 1 Aug 2024 04:49:50 -0500, BGB wrote:
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IME, typically OpenGL HDR framebuffers used 4x Binary16.

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OpenGL is only for on-screen stuff.

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You can use it for offline rendering as well ...

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Not for serious use. Unless you can give some examples?

   Off hand, it is harder to confirm which shows would have used OpenGL in particular...
AFAICT: It was used for Appleseed (2004) along with the 3D rendering in shows like "Ghost in the Shell: Stand Alone Complex" and similar.
  Apparently also (various shows by "Mainframe Entertainment"):
   ReBoot
   Donkey Kong Country
   Transformers: Beast Wars
   ...
 Though, this is mostly by inference given that these shows were rendered on SGI Workstations (in the 1990s), and thus most likely would have been using OpenGL. Apparently using SoftImage running on IRIX.
 

I guess, as a more visual example (Donkey Kong Country, TV show):
https://www.youtube.com/watch?v=OHaIueqTwyg&list=PLyJA77GdW64ZGrfcO6X89Ve6OEwnoo0TE
And, I guess, one can make a guess as to whether this was likely rendered using GL, or something more elaborate (like a raytracer).
There are shadows, but given there are not any obvious gradients in the shadows; they could likely have been pulled off using the stencil buffer.
Scene lighting looks like lightmaps; character lighting (and moving objects) looks like Gouraud Shading.
Nothing stands out to me that looks terribly out of place for OpenGL 1.x ...
Slightly older, same company:
https://www.youtube.com/watch?v=MfT2MaaukrQ&list=PLV4Ztn9euy7TJJrTgY5jgswEo_GY0ZHqj
The show is ReBoot...
Most obvious thing that stands out is that they actually bothered using the OpenGL lighting system...
Vs, say, the Quake series that didn't bother with it. But, then again, OpenGL lighting was a pain and wasn't great for performance (then again, neither was the stencil buffer, which these shows also appear to have been using...).
Unless, one can argue, that it is likely in-fact something different.

   Though, a lot of other shows, like "Code Lyoko" were apparently instead using a combination of "Autodesk Maya" and "Mental Ray" (which uses a CPU based raytracer).
 

Contrast, the 3D rendered parts of Code Lyoko look very different:
https://www.youtube.com/watch?v=msuusqraTIY&list=PLDdlwI0EwS7TpHbfjMCjvm62n9WA-3Z-l
Which stands to reason, given they were using a raytracer...

 The earlier seasons of Miraculous Ladybug are also Maya, but they are jumping ship to Unreal Engine 5 (with apparently the Miraculous Ladybug movie having been rendered in UE5).
 Though, if you had asked me, I would have guessed that Season 1 would have been rendered in Source Engine (it seemed to have many of the same types of lighting and shadow issues that Source Engine is known for).
 

Seasons 2 - 5, I can more easily believe they were using a raytracer.
Though, season 1 had:
   Missing and glitchy shadows;
   Mismatches between character and scene lighting;
   Missing reflections;
   What looked like obvious cubemap effects for shiny surfaces;
   ...
A lot of stuff that would be out of place with raytracing, but were common place in Source Engine and Source Filmmaker.
Though, we do have some things that were made in Source Engine:
   Skibidi Toilet
   SMG4
   Murder Drones
   The Amazing Digital Circus (presumably, *)
   ...
*: Same people (GLITCH) who made SMG4 and Murder Drones (using Source Filmmaker), so no obvious reason they wouldn't do so for Digital Circus.
Though, Source used Direct3D before (AFAIK) later moving to Vulkan (for Source 2), and also dropping the use of the Havok engine in favor of an in-house option.
Though, can note that one contrast between these and Skibidi Toilet, is that Skibidi Toilet also makes significant use of Valve's game assets (models, sound effects, etc). Seemingly borrowing a fair bit from Half-Life 2.
Granted, this "show" may not cross the threshold of "serious use"...
...

  Did find a page listing some movies/TV shows that were using the Unreal Engine for special effects...
 https://www.unrealengine.com/en-US/feed?tags=film-television%2Cspotlight
 Albeit this is apparently mostly running the 3D rendering through Vulkan...
  ...