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Unity’s implementation of C# is subpar to say the least. Watch the YouTube video, it demonstrates DragonRuby’s speed vs Unity. We can render twice as many sprit

Unity’s implementation of C# is subpar to say the least. Watch the YouTube video, it demonstrates DragonRuby’s speed vs Unity. We can render twice as many sprites and are 1/8th the size. We also expose C Extensions to the end user if they what blinding fast performance for critical paths.

wokwokwok 5y ago
Hm... I'm more concerned about running user-land scripts and shaders than sprites. If I wanted raw pixel-blits per second I could just use SDL. Do you have any concrete numbers on compute (ie. scripts)? Do you support shaders? eg. How would you do this in DragonRuby? --> https://github.com/keijiro/StableFluids https://github.com/keijiro/StableFluids Ie. a compute buffer that renders a fluid simulation in real time?
- amirrajan 5y ago
  There’s quite a few samples of people doing crazy things with Cuda. Not sure if you can access this demonstration: https://discord.com/channels/608064116111966245/674410581326823446/828899164812607499 https://discord.com/channels/608064116111966245/674410581326... These are other demonstrations of DRGTK’s performance capabilities: - https://twitter.com/Groteskly/status/1373668110482427906 https://twitter.com/Groteskly/status/1373668110482427906 - https://twitter.com/amirrajan/status/1361640855589842951 https://twitter.com/amirrajan/status/1361640855589842951 - https://twitter.com/amirrajan/status/1339575630187425792 https://twitter.com/amirrajan/status/1339575630187425792
Impossible 5y ago
Huh, number of sprites per frame has little to do with the speed of C# in Unity. If anything it shows that Unity's default sprite renderer is inefficient.
jbluepolarbear 5y ago
You have any data to back up that claim? Unity C# is very fast; especially, if compiled to IL2CPP. Your video doesn’t prove anything. Make a lot of moving transform hierarchies and see how they compare. Unity sucks at this, but I bet it will still outperform In your tests.
dosshell 5y ago
Unity does also support C extensions... But due to cross platform mess it is not so popular (i guess). > double the amount of sprites It sounds a bit low? My experience is that with instancing and 2d array textures (2d games usally uses spritesheets) can be much much faster then 2x. I would guess 20x-200x faster than unity.
kevingadd 5y ago
Unity rendering sprites has nothing to do with C#. A big portion of their engine and rendering stack are implemented in C/C++.

wokwokwok 5y ago

Hm... I'm more concerned about running user-land scripts and shaders than sprites. If I wanted raw pixel-blits per second I could just use SDL. Do you have any concrete numbers on compute (ie. scripts)? Do you support shaders? eg. How would you do this in DragonRuby? --> https://github.com/keijiro/StableFluids https://github.com/keijiro/StableFluids Ie. a compute buffer that renders a fluid simulation in real time?

amirrajan 5y ago
There’s quite a few samples of people doing crazy things with Cuda. Not sure if you can access this demonstration: https://discord.com/channels/608064116111966245/674410581326823446/828899164812607499 https://discord.com/channels/608064116111966245/674410581326... These are other demonstrations of DRGTK’s performance capabilities: - https://twitter.com/Groteskly/status/1373668110482427906 https://twitter.com/Groteskly/status/1373668110482427906 - https://twitter.com/amirrajan/status/1361640855589842951 https://twitter.com/amirrajan/status/1361640855589842951 - https://twitter.com/amirrajan/status/1339575630187425792 https://twitter.com/amirrajan/status/1339575630187425792

Impossible 5y ago

Huh, number of sprites per frame has little to do with the speed of C# in Unity. If anything it shows that Unity's default sprite renderer is inefficient.

jbluepolarbear 5y ago

You have any data to back up that claim? Unity C# is very fast; especially, if compiled to IL2CPP. Your video doesn’t prove anything. Make a lot of moving transform hierarchies and see how they compare. Unity sucks at this, but I bet it will still outperform In your tests.

dosshell 5y ago

Unity does also support C extensions... But due to cross platform mess it is not so popular (i guess). > double the amount of sprites It sounds a bit low? My experience is that with instancing and 2d array textures (2d games usally uses spritesheets) can be much much faster then 2x. I would guess 20x-200x faster than unity.

kevingadd 5y ago

Unity rendering sprites has nothing to do with C#. A big portion of their engine and rendering stack are implemented in C/C++.