freedreno/a3xx/compiler: better const handling

Seems like most/all instructions have some restrictions about const src
registers.  In seems like the 2 src (cat2) instructions can take at most
one const, and the 3 src (cat3) instructions can take at most one const
in the first 2 arguments.  And so on.  Handle this properly now.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno/a3xx/compiler: handle sync flags better

We need to set the flag on all the .xyzw components that are written by
the instruction, not just on .x.  Otherwise a later use of rN.y (for
example) will not trigger the appropriate sync bit to be set.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno: updates for msm drm/kms driver

There where some small API tweaks in libdrm_freedreno to enable support
for msm drm/kms driver.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno: pipe loader for either kgsl or msm

The downstream android kernel driver is "kgsl", the upstream drm/kms
driver is called "msm".  Since libdrm_freedreno handles the differences
between the two, we need to load the same thing for either device.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
radeonsi: Early return if no depth or stencil on release builds.

Fixes "Missing break in switch" defect reported by Coverity.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
gallivm: refactor num_lods handling

This is just preparation for per-pixel (or per-quad in case of multiple quads)
min/mag filter since some assumptions about number of miplevels being equal
to number of lods no longer holds true.
This change does not change behavior yet (though theoretically when forcing
per-element path it might be slower with different min/mag filter since the
code will respect this setting even when there's no mip maps now in this case,
so some lod calcs will be done per-element just ultimately still the same
filter used for all pixels).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
gallivm: don't calculate square root of rho if we use accurate rho method

While a sqrt here and there shouldn't hurt much (depending on the cpu) it is
possible to completely omit it since rho is only used for calculating lod and
there log2(x) == 0.5*log2(x^2). Depending on the exact path taken for
calculating lod this means we get a simple mul instead of sqrt (in case of
nearest mip filter in fact we don't need to replace the sqrt with something
else at all), only in some not very useful path this doesn't work (combined
brilinear calculation of int level and fractional lod, accurate rho calc but
brilinear filtering seems odd).
Apart from being faster as an added bonus this should increase our crappy
fractional accuracy of lod, since fast_log2 is only good for ~3bits and this
should increase accuracy by one bit (though not used if dimension is just one
as we'd need an extra mul there as we never had the squared rho in the first
place).

v2: use separate ilog2_sqrt function if we have squared rho.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
gallivm: support per-pixel min/mag filter in SoA path

Since we can have per-pixel lod we should also honor the filter per-pixel
(in fact we didn't honor it per quad neither in the multiple quad case).
Do this by running the linear path and simply beating the weights into shape
(the sample with the higher weight is the one which should have been chosen
with nearest filtering hence adjust filter weight to 1.0/0.0 based on that).
If all pixels use nearest filter (either min and mag) then still run just a
nearest filter as this is way cheaper (probably around 4 times faster for 2d,
more for 3d case) and it should be relatively rare that pixels really need
different filtering. OTOH if all pixels would require linear don't do anything
special since the linear path with filter adjustments shouldn't really be all
that much more expensive than ordinary linear, and we think it's rare that
min/mag filters are configured differently so there doesn't seem much value
in trying to optimize this further.
This does not yet fix the AoS path (though currently AoS is only used for
single quads hence it could be considered less broken, just never honoring
per-pixel filter decision but doing it per quad).

v2: simplify code a bit (unify min linear and min nearest cases)

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
nvc0/ir: Initialize NVC0LegalizePostRA member variables.

Fixes "Uninitialized pointer field" defects reported by Coverity.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
r600g: fix color exports when we have no CBs

We need to export at least one color if the shader writes it,
even when nr_cbufs==0.

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
r600g: enable SB backend by default

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Move nv30, nv50 and nvc0 to nouveau.
ilo: -I$(top_srcdir)/src/mesa/drivers/dri/i965
Suppress clang's warnings about unused CFLAGS and CXXFLAGS.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
configure.ac: Save user {C,CXX}FLAGS and append them at end.

This way the user has the privilege of last decision and so the option to build an optimized debug build again.
radeon: Build libllvmradeon the right way.

Better build system integration for:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=91a160b
http://cgit.freedesktop.org/mesa/mesa/commit/?id=5b2855b
gallium/targets: Make use of prebuilt libdricommon.la.
Drop support for --enable-static / --disable-shared.
gallium/auxiliary: Build libgallium shared.
Drop last parts of compatibility for the old Mesa build system.