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author | Daniel Vetter <[email protected]> | 2012-03-02 21:38:44 +0100 |
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committer | Kenneth Graunke <[email protected]> | 2012-03-05 12:02:47 -0800 |
commit | f172eae8b23d0612865895c52af745021ae20a4c (patch) | |
tree | d413276ee78be3f93e5dc896259245b722b3dd33 /src/mesa/drivers/dri/intel/intel_buffers.c | |
parent | 3ff04ea236d3ef53fe765ecee92a805357b7373e (diff) |
i965: fixup W-tile offset computation to take swizzling into account
There's even a comment in the code containing the right swizzling
computations!
Previously this has not been noticed because we need to manually
enabled swizzling on snb/ivb (kernel 3.4 will do that) and we
don't use the separate stencil on ilk (where the bios enables
swizzling). This fixes
piglit ./bin/fbo-stencil readpixels GL_DEPTH32F_STENCIL8 -auto
on recent drm-intel-next kernels.
Also remove the comment about ivb, it's stale now.
Swizzling detection is done by allocating a temporary x-tiled
buffer object. Unfortunately kernels before v3.2 lie on snb/ivb
because they claim that swizzling is enable, but it isn't. The
kernel commit that fixes this for backport to pre-v3.2 is
commit acc83eb5a1e0ae7dbbf89ca2a1a943ade224bb84
Author: Daniel Vetter <[email protected]>
Date: Mon Sep 12 20:49:16 2011 +0200
drm/i915: fix swizzling on gen6+
But if the kernel doesn't lie, this now works on swizzling and
not swizzling machines.
NOTE: This is a candidate for the 8.0 branch.
Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_buffers.c')
0 files changed, 0 insertions, 0 deletions