What | Removed | Added |
---|---|---|
Keywords | bisected, regression | |
Summary | [regression] r600g+nine: Bioshock shader failure after 7b1c0cbc90d456384b0950ad21faa3c61a6b43ff | r600g+nine: Bioshock shader failure after 7b1c0cbc90d456384b0950ad21faa3c61a6b43ff |
Comment # 4
on bug 85696
from David Heidelberg (okias)
It's bug in Nine. Instead of one available ADDR[0], we try use DCL ADDR[0..1]. ADDR[0] is allocated by LOOP (for counter purposes) and then later is allocated ADDR[1]. 0 is the address register (already allocated by LOOP, but in this case unused) 1 is UBO index register (misused by location for MOVA (coverted)-> ARR) 2 is sampler index register (not used, correctly). Axel had idea we could do something like: . if wants to use rL to index constant register . . if a0 is used somewhere in the shader . . then copy the content to temp. load rL to a0. do the op. restore a0 . . else copy rL to a0 and use it . else do nothing particular
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