drm/i915: Add the predicate source registers to the register whitelist

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The predicate source registers are needed to implement conditional
rendering without stalling. The two source registers are used to load
the previous values of the PS_DEPTH_COUNT register saved from
PIPE_CONTROL commands. These can then be compared and used to set the
predicate enable bit via the MI_PREDICATE command.

The command parser version number is increased to 2 to make it easier
to detect the new functionality in user space.

Signed-off-by: Neil Roberts <neil@linux.intel.com>
Reviewed-by: Brad Volkin <bradley.d.volkin@intel.com> (v1)
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Neil Roberts 2014-11-07 19:00:26 +00:00 • committed by Daniel Vetter

parent 1f9954d0bb

commit f1f55cc055

2 changed files with 7 additions and 1 deletions

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6

drivers/gpu/drm/i915/i915_cmd_parser.c

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2

drivers/gpu/drm/i915/i915_reg.h

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