Resolved Compatibility buffer newbie questions

Hi! I have a couple of what seem to me like newbie questions, doing my best to understand.

In the docs it's specified that a minimum of 4 buffers per stage are support on android (opengles 3.1+)

• Is the limit set per shader or per material instance (all instances added together can have more than 4 but not individually)?

• If i have 4 buffers that are declared in the whole shader and is only used in the vertex and not in the fragment, the buffers used count as 4 per stage and not 8?

• I'm coding in a generated shader graph shader. It makes multiple passes and all passes have the same buffer (read only) included. Is this buffer a shared one or each pass makes a copy of it? In the case of 8 passes do the compute buffers count as 8 per stage?

• Is there a limit of compute shaders you can run on mobile in one frame? (where supported)

• Is there a size limit of data a buffer can hold on mobile?

 

1. per shader
2. vert/frag shaders are (almost) totally independent of each other, thus it is counted per stage
3. per pass
4. No
5. Yes. It depends on the manufacturer. See more here : https://opengles.gpuinfo.org/displa...L_MAX_COMPUTE_SHARED_MEMORY_SIZE&esversion=31

Note that some mobile devices don't support reading from SSBOs (compute buffers) at all in the vertex stage.

 

Great answer! Thank you!