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OpenGL & Vulkan

onsolight
Adept III

Re: Will RX 480 Support Fragment Shader Interlock? GL & VK

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would it be worth it is the thing how much of an impact would it make?

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gharland
Adept I

Re: Will RX 480 Support Fragment Shader Interlock? GL & VK

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I'm not an expert on how the hardware works but If the slowdown is significantly more than the 2-3x slowdown you get from spinlocking or k-buffers, then maybe not.  But could be potentially faster than or close to the same speed as native atomics, which would be a huge win.  It would make life a hell of a lot easier for developers either way.  If I'm right about only in the event of concurrent writes to the same pixel, I doubt you'd even notice it - especially in the context of an emulator - it would just be a memory fence for that pixel quad or wavefront.  I think in the case of programmable blending for emulators which I know nothing about it's also a case of everybody gets it or nobody gets it.  It would be nice to have the option.

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onsolight
Adept III

Re: Will RX 480 Support Fragment Shader Interlock? GL & VK

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Updated to 19.7.3 and Vulkan API is 1.1.113  any update on this?

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dorisyan
Staff
Staff

Re: Will RX 480 Support Fragment Shader Interlock? GL & VK

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Recently, I didn't see updates about shader interlock.

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onsolight
Adept III

Re: Will RX 480 Support Fragment Shader Interlock? GL & VK

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oh i see. ill return to my corner and weep 

zinx
Adept II

Re: Will RX 480 Support Fragment Shader Interlock? GL & VK

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onsolight
Adept III

Re: Will RX 480 Support Fragment Shader Interlock? GL & VK

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dorisyan‌ should i take this as a reason to drop AMD and hop on the Nvidia Train?

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