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3dffd81583
This implements some simple helper functions that can be used to specify the group of channel enable signals and compression enable that apply to a brw_inst instruction. It's intended to replace brw_set_default_compression_control eventually because the current interface has a number of shortcomings inherited from the Gen-4-5-centric representation of compression and group controls as a single non-orthogonal enum: On the one hand it doesn't work for specifying arbitrary group controls other than 1Q and 2Q, which are frequently useful in SIMD32 and FP64 programs. On the other hand the current interface forces you to update the compression *and* group controls simultaneously, which has been the source of a number of generator bugs (a bunch of them fixed in this series), because in many cases we would end up resetting the group controls to zero inadvertently even though everything we wanted to do was disable instruction compression -- The latter seems especially unfortunate on Gen6+ hardware which have no explicit compression control, so we would end up bashing the quarter control field of the instruction for no benefit. Instead of a single function that updates both at the same time introduce separate interfaces to update one or the other independently preserving the current value of the other (which typically comes from the back-end IR so it has to be respected). Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> |
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| gallium | ||
| gbm | ||
| getopt | ||
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| intel | ||
| loader | ||
| mapi | ||
| mesa | ||
| util | ||
| Makefile.am | ||
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