i965: Emit the depth/stencil state pointer directly, not via atoms.
authorKenneth Graunke <kenneth@whitecape.org>
Sat, 8 Jun 2013 20:20:43 +0000 (13:20 -0700)
committerKenneth Graunke <kenneth@whitecape.org>
Tue, 11 Jun 2013 22:42:17 +0000 (15:42 -0700)
commitb00d61151dba9904197ad3b5156b182dcca8a152
treeffaa1b10f9880fca64e8effd34aa1d624201a1b9
parent8ab15bacf4eea44ba4c028fde741467328aa7461
i965: Emit the depth/stencil state pointer directly, not via atoms.

See two commits ago for the rationale.  This allows us to delete the
whole gen7_cc_state.c file.

This does move these commands before the depth stall flushes from
brw_emit_depthbuffer, which may be a problem.  The documentation for
3DSTATE_DEPTH_BUFFER mentions that depth stall flushes are required
before changing any depth/stencil buffer state, but explicitly lists
3DSTATE_DEPTH_BUFFER, 3DSTATE_HIER_DEPTH_BUFFER, 3DSTATE_STENCIL_BUFFER,
and 3DSTATE_CLEAR_PARAMS.  It does not mention this particular packet
(_3DSTATE_DEPTH_STENCIL_STATE_POINTERS).

No observed Piglit regressions on Sandybridge or Ivybridge.

Together with the last two commits, this makes a cairo-gl benchmark
faster by 0.324552% +/- 0.258355% on Ivybridge.  No statistically
significant change on Sandybridge.  (Thanks to Eric for the numbers.)

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
src/mesa/drivers/dri/i965/Makefile.sources
src/mesa/drivers/dri/i965/brw_context.h
src/mesa/drivers/dri/i965/brw_state.h
src/mesa/drivers/dri/i965/brw_state_upload.c
src/mesa/drivers/dri/i965/gen6_cc.c
src/mesa/drivers/dri/i965/gen6_depthstencil.c
src/mesa/drivers/dri/i965/gen7_cc_state.c [deleted file]