[raspi-internals] Re: GPU FFT Disassembly

  • From: Herman Hermitage <hermanhermitage@xxxxxxxxxxx>
  • To: "raspi-internals@xxxxxxxxxxxxx" <raspi-internals@xxxxxxxxxxxxx>
  • Date: Wed, 5 Feb 2014 13:58:28 +1200

I've made a home for the disassembly at:
  https://github.com/hermanhermitage/videocoreiv-qpu/tree/master/qpu-fft

Will add comments to the 256 element shader shortly.

Most of the bits are making sense
- Control flow looks ok
- Uniform fetches look ok
- Data fetches via tmu0 look ok
- Floating point operations make sense

Its just the vpm read/write and rotator, and the movement of operands that need 
more work/understanding.                                          

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