ChanServ changed the topic of #lima to: Development channel for open source lima driver for ARM Mali4** GPUs - Kernel has landed in mainline, userspace driver is part of mesa - Logs at https://people.freedesktop.org/~cbrill/dri-log/index.php?channel=lima and https://freenode.irclog.whitequark.org/lima - Contact ARM for binary driver support!
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<Marex> anarsoul: hi, do I understand it correctly that the mali400mp2 has two texture sampler units ?
<anarsoul> Marex: it has 2 pixel processors that run pixel shaders
<anarsoul> driver splits the job across 2 PPs in this case
<anarsoul> so basically MP2 has twice the fill rate of MP1 if there's no bottleneck somewhere else
<anarsoul> see lima_generate_pp_stream on how it's done
<Marex> so how many textures in total can I sample ?
<Marex> at the same time I mean
<anarsoul> well, two per clock?
<Marex> so one texture sampler per PP ... ok, makes sense
<Marex> thank you
<anarsoul> np
<Marex> btw does lima expose any performance counters yet ?
<anarsoul> no
<anarsoul> IIRC Erico was looking into it
<Marex> anarsoul: are there any in that hardware ?
<Marex> oh cool :)
<anarsoul> yeah, there's number of perf counters but you can sample only 2 per job
<Marex> sounds like AXI perf monitor , sigh
<Marex> better than nothing I guess
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<anarsoul> Marex: btw note that since both PP run the same program it's more likely they'll be sampling the same texture per clock
<Marex> anarsoul: so if I want to blend multiple textures in fragment shader, it's gonna be inefficient no matter how I go about it ?
<anarsoul> well, in general it should be OK, depends on how many textures you want to blend and how complex is fragment shader
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