Bug #1028: Add hardware-accelerated stencil support to r128. Testing with
stencilwrap reported many issues with various modes. Some of these were
complicated by the fact that spans are broken (Bug #1615), but some appear to be
real bugs. However, while spans remain broken, I found that visual results were
better by avoiding fallbacks rather than avoiding just a broken stencil
implementation. Note that this required changing the depth spans at 24+8bpp
into read-modify-write cycles. It would be nicer as a single write with
a mask, but the kernel span blits turn off masking.
Reviewed by: ajax
projects / mesa.git / commit