The relationship between swiftshader and gralloc、hwc in android emulator

[Martin]

Hi all !

As a beginner, I try to build an android emulator on Host without GPU(  emulator -gpu swiftshader_indirect ).

So I need to understand the relationship between swiftshader and gralloc、hwc.

In AOPS_build_dir/device/generic/goldfish-opengl/system/ ,  I found hwc2  and gralloc.

But,  this gralloc content  implements Host Transoprt in .../gralloc/gralloc_30.cpp, which needs to contact the  Host GPU.

In  AOPS_build_dir/external/swiftshader/,  I found it just implements the allocate function in Memory.cpp，which doesn't need to contact GPU .

So, are both mapper and hwc implemented using goldfish?

I don’t know if my understanding is correct. I hope to get your correction.

Best Regards.

Martin.

[Martin]

I tried on Android 11.
I have seen the talk  in  https://groups.google.com/g/swiftshader/c/Zjtdirb7iCw

But, it is temporarily planned to use OpenGLES