This way the caller doesn't have to initialize all 4 channels when they
aren't using them.
v2: Fix signed/unsigned comparison warning (Iago)
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Designated initializers are not allowed in C++ (not even C++11). Since
nir_lower_samplers is now using nir_builder, and nir_lower_samplers is in
C++, this breaks the build on some compilers. Aparently, GCC 5 allows it
in some limited extent because mesa still builds on my system without this
patch.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92052
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Fixes:
In file included from nir/nir_lower_samplers.cpp:27:0:
nir/nir_builder.h: In function 'nir_ssa_def* nir_channel(nir_builder*, nir_ssa_def*, int)':
nir/nir_builder.h:222:37: warning: narrowing conversion of 'c' from 'int' to 'unsigned int' inside { } is ill-formed in C++11 [-Wnarrowing]
unsigned swizzle[4] = {c, c, c, c};
Signed-off-by: Rob Clark <robclark@freedesktop.org>
C++ gets cranky if we take references of temporaries. This isn't a problem
yet in master because nir_builder is never used from C++. However, it will
be in the future so we should fix it now.
Reviewed-by: Rob Clark <robclark@freedesktop.org>
Rather than make yet another copy of channel(), let's move it into nir.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
These provide a convenient way to do simple variable loads and stores.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This *should* ensure that the cursor gets properly advanced in all cases.
We had a problem before where, if the cursor was created using
nir_after_cf_node on a non-block cf_node, that would call nir_before_block
on the block following the cf node. Instructions would then get inserted
in backwards order at the top of the block which is not at all what you
would expect from nir_after_cf_node. By just resetting to after_instr, we
avoid all these problems.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The NIR cursor API is exactly what we want for the builder's insertion
point. This simplifies the API, the implementation, and is actually
more flexible as well.
This required a bit of reworking of TGSI->NIR's if/loop stack handling;
we now store cursors instead of cf_node_lists, for better or worse.
v2: Actually move the cursor in the after_instr case.
v3: Take advantage of nir_instr_insert (suggested by Connor).
v4: vc4 build fixes (thanks to Eric).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net> [v1]
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com> [v4]
Acked-by: Connor Abbott <cwabbott0@gmail.com> [v4]
We use nir_ssa_defs for nir_builder args, so this takes a nir_src and
makes one so it can be passed in.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
So far we'd only used nir_builder to build brand new programs. But if
we're doing modifications to instructions (like in a lowering pass), then
we want to generate new stuff before the instruction we're modifying.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
These will be useful for prog->nir and tgsi->nir.
v2: Don't forget to mark nir_swizzle as inline (Eric).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Both prog->nir and tgsi->nir will want to use these.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
v2: Rebase on the nir_opcodes.h python code generation support.
v3: Use SSA values, and set an appropriate writemask on dot products.
v4: Make the arguments be SSA references as well. This lets you stack up
expressions in the arguments of other expressions, at the cost of
having to insert a fmov/imov if you want to swizzle. Also, add
the generated file to NIR_GENERATED_FILES.
v5: Use more pythonish style for iterating the list.
v6: Infer the size of the dest from the size of the srcs, and auto-swizzle
a single small src out to the appropriate size.
v7: Add little helpers for initializing the struct, add a typedef for the
struct like other nir types have.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (v6)
Reviewed-by: Connor Abbott <cwabbott0@gmail.com> (v7)
