This patch adds the lrint, lrintf, llrint, and llrintf rounding utility
functions. When packing unorm depth values, we will round to nearest.
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
With commit cb1febb07, I have incorrectly removed HAVE_COMMON_DRI
assuming that swrast does not need to build the translations for
driconf options, as effectively swrast/drisw does not use them.
With the incoming unification work of dri and drisw, it makes
sense just to revert the offending hunk.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70057
Reported-by: Vinson Lee <vlee@freedesktop.org>
Tested-by: Vinson Lee <vlee@freedesktop.org>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Previously, we computed dFdy() using the following instruction:
add(8) dst<1>F src<4,4,0)F -src.2<4,4,0>F { align1 1Q }
That had the disadvantage that it computed the same value for all 4
pixels of a 2x2 subspan, which meant that it was less accurate than
dFdx(). This patch changes it to the following instruction when
c->key.high_quality_derivatives is set:
add(8) dst<1>F src<4,4,1>.xyxyF -src<4,4,1>.zwzwF { align16 1Q }
This gives it comparable accuracy to dFdx().
Unfortunately, align16 instructions can't be compressed, so in SIMD16
shaders, instead of emitting this instruction:
add(16) dst<1>F src<4,4,1>.xyxyF -src<4,4,1>.zwzwF { align16 1H }
We need to unroll to two instructions:
add(8) dst<1>F src<4,4,1>.xyxyF -src<4,4,1>.zwzwF { align16 1Q }
add(8) (dst+1)<1>F (src+1)<4,4,1>.xyxyF -(src+1)<4,4,1>.zwzwF { align16 2Q }
Fixes piglit test spec/glsl-1.10/execution/fs-dfdy-accuracy.
Acked-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Eric Anholt <eric@anholt.net>
The inferface/prototype in native_wayland_bufmgr.h uses boolean/int, as
well as the rest of the file. Convert to improve consistency and to
prevent gcc compiler warnings due to type miss-match.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
