tree 40bbdcb7da1325600d958c45f2d9a8300631b6ba
parent 5bff4059d646fbd296818d8d17fb38c8590de8a7
author Nicolas Capens <capn@google.com> 1527528127 -0400
committer Nicolas Capens <nicolascapens@google.com> 1527602383 +0000

Implement dynamic indexing of temporaries.

Previously only dynamic indexing of uniforms was supported.

Since this is essentially a gather operation within the register file,
it is slow. We optimize the common case of using the loop index
variable as relative address, where the index value would be the same
for all shader invocations running in lock-step across SIMD lanes.

Bug chromium:845103
Bug skia:7846

Change-Id: Idb36b512dd560d740ac9088691b633ff3a1561c1
Reviewed-on: https://swiftshader-review.googlesource.com/18968
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>