Does setStaticUniform upload GPU every frame?

[kkl]

Hi Egon,

Does setStaticUniform upload its value to GPU every frame? If yes, is it possible if we can make it upload only once and reuse afterwards, like texture?

[EgonOlsen]

No, it doesn't. That's what it's meant for. However, if you are using it, you have to take care of context changes (pause/resume and similar stuff) and set it again in that case.

[kkl]

Do you mean we have to use setStaticUniform on context change? Does setStaticUniform upload to GPU directly or it will upload again automatically during rendering after I use the method on context change?

[EgonOlsen]

It uploads during the first render pass. And yes, you have to re-apply the setters after a context change. That's why i actually don't use it anymore myself.

[kkl]

Thanks egon. I guess i'll have to set it on every context change

[kkl]

Hi egon,

How about vertex attributes? Is it doable if we have it static and only upload to GPU once?

[EgonOlsen]

No, those are different. The only 'upload' here is a pointer to a buffer and each attribute from that buffer will be injected into the vertex shader for the corresponding vertex. That's the basic idea of a vertex shader. You can't prevent it and it wouldn't make any sense, because it would leave the vertex shader without data.