Unlike the much older -abs(a) >= 0.0 transformation, this is not
precise. The behavior changes if the source is NaN.
No shader-db changes on any platform.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Thomas Helland <thomashelland90@gmail.com>
Python 2 had two integer types: int and long. Python 3 dropped the
latter, as it made the int type automatically support bigger numbers.
As a result, Python 3 lost the 'L' suffix on integer litterals.
This probably doesn't make much difference when compiling the generated
C code, but adding it explicitly means that both Python 2 and 3 generate
the exact same C code anyway, which makes it easier to compare and check
for discrepencies when moving to Python 3.
Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
The hex() builtin returns a string containing the hexa-decimal
representation of an integer.
When the argument is not an integer, then the function calls that
object's __hex__() method, if one is defined. That method is supposed to
return a string.
While that's not explicitly documented, that string is supposed to be a
valid hexa-decimal representation for a number. Python 2 doesn't enforce
this though, which is why we got away with returning things like
'NIR_TRUE' which are not numbers.
In Python 3, the hex() builtin instead calls an object's __index__()
method, which itself must return an integer. That integer is then
automatically converted to a string with its hexa-decimal representation
by the rest of the hex() function.
As a result, we really can't make this compatible with Python 3 as it
is.
The solution is to stop using the hex() builtin, and instead use a hex()
object method, which can return whatever we want, in Python 2 and 3.
Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Whenever a non-zero stream is written to it now sets uses_streams to
true. This reflects the code in validate_geometry_shader_emissions for
GLSL.
v2: set uses_streams at gather_info instead that at spirv to nir
(Jason Ekstrand)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
These are copied from the from the corresponding values in
ir_variable. The intention is to eventually use them in a pure-NIR
linker.
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
We weren't returning at the end of the nir_isntr_type_deref case in
nir_instrs_equal and it was falling through to the default of false.
While we're at it, make the default unreachable because all statements
in the switch now have their own returns. Had we done that before, we
would have caught this bug a long time ago.
Fixes: 19a4662a54 "nir: Add a deref instruction type"
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Thomas Helland<thomashelland90@gmail.com>
v2: use nir_metadata_preserve
preserve metadata in case of !progress
Fixes: 074f5ba0b5
"nir: Add a simple int64 lowering pass"
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Until now, we had separate passes for lowering gl_PatchVerticesIn to
a statically known constant (for TES inputs when linked against a TCS),
and a uniform in the other cases. Annoyingly, one had to be run before
nir_lower_system_values, and the other afterward. This simplified the
passes, but made life painful for the callers.
This patch combines both into a single pass. If you give it a non-zero
static count, it uses that. If you give it Mesa state slots, it turns
it back into a built-in uniform. Otherwise, it does nothing.
This also moves the i965 uniform lowering out to shared code.
v2: Make token arrays const.
Reviewed-by: Eric Anholt <eric@anholt.net>
This is controlled by a new nir_shader_compiler_options flag, and fixes
dEQP-GLES3.functional.shaders.builtin_variable.pointcoord on V3D.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This breaks printing input/output variables with more than
4 components like mat4.
Fixes: 1beef89ad8 ("nir: prepare for bumping up max components to 16")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
nir_sweep assumes that constants area always allocated off the variable
to which they belong. Violating this assumption causes them to get
freed early and leads to use-after-free bugs.
Fixes: 120da00975 "nir: add serialization and deserialization"
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107366
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Tested-by: Mark Janes <mark.a.janes@intel.com>
we need rounding modes on other conversions involving floats and it is easier
to rename f2f16_undef than renaming all the other ones.
v2: rebased on master
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
also move some of the GLSL builtins over we will need for implementing
some OpenCL builtins
v2: replace NIR_IMM_FP by nir_imm_floatN_t in ported code
fix up changes caused by swizzle rework
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Python 2 has a range() function which returns a list, and an xrange()
one which returns an iterator.
Python 3 lost the function returning a list, and renamed the function
returning an iterator as range().
As a result, using range() makes the scripts compatible with both Python
versions 2 and 3.
Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
In Python 2, iterators had a .next() method.
In Python 3, instead they have a .__next__() method, which is
automatically called by the next() builtin.
In addition, it is better to use the iter() builtin to create an
iterator, rather than calling its __iter__() method.
These were also introduced in Python 2.6, so using it makes the script
compatible with Python 2 and 3.
Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
In Python 2, dictionaries have 2 sets of methods to iterate over their
keys and values: keys()/values()/items() and iterkeys()/itervalues()/iteritems().
The former return lists while the latter return iterators.
Python 3 dropped the method which return lists, and renamed the methods
returning iterators to keys()/values()/items().
Using those names makes the scripts compatible with both Python 2 and 3.
Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
There always is a continue block, so let us just do unreachable.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Fixes: 8cacf38f52 "nir: Do not use continue block after removing it."
CC: 18.1 <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107312
Reinserting code directly before a jump means the block gets split
and merged, removing the original block and replacing it in the
process.
Hence keeping a pointer to the continue block over a reinsert
causes issues.
This code changes nir_opt_if to simply look for the new continue
block.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107275
CC: 18.1 <mesa-stable@lists.freedesktop.org>
v2: reword comment about lower_helper_invocations to be more clear
that it might not work on all hardware
v3: add special variant of load_sample_id which does not imply per-
sample shading
Signed-off-by: Rob Clark <robdclark@gmail.com>
OpenCL knows vector of size 8 and 16.
v2: rebased on master (nir_swizzle rework)
rework more declarations with nir_component_mask_t
adjust print_var_decl
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
This makes the arguments match the (thing, container) pattern used in
other nir_foreach macros and also renames it to make that a bit more
clear.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
A while ago, we added a bunch of format conversion helpers; we should
use them instead of hand-rolling sRGB conversions.
Reviewed-by: Eric Anholt <eric@anholt.net>
There are no fixed sized array arguments in C, those are simply pointers
to unsized arrays and as the size is passed in anyway, just rely on that.
where possible calls are replaced by nir_channel and nir_channels.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
It wasn't causing problems since there's nothing to delete, but better
be consistent with the rest of existing codebase.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
we already have this code duplicated and we will need it for the global
group size as well
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Commit 5fb69daa6076e56b deleted support from nir_print for printing the
texture and sampler indices on texture instructions. This commit just
brings it back as best as we can.
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
In Python 2, `print` was a statement, but it became a function in
Python 3.
Using print functions everywhere makes the script compatible with Python
versions >= 2.6, including Python 3.
Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Acked-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>
From the ARB_color_buffer_float spec:
35. Should the clamping of fragment shader output gl_FragData[n]
be controlled by the fragment color clamp.
RESOLVED: Since the destination of the FragData is a color
buffer, the fragment color clamp control should apply.
Fixes arb_color_buffer_float-mrt mixed on v3d.
Reviewed-by: Rob Clark <robdclark@gmail.com>
In Python, dictionaries and sets are unordered, and as a result their
is no guarantee that running this script twice will produce the same
output.
Using ordered dicts and explicitly sorting items makes the build more
reproducible, and will make it possible to verify that we're not
breaking anything when we move the build scripts to Python 3.
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
From the SPIR-V 1.0 specification, section 3.32.18, "Atomic
Instructions":
"OpAtomicIDecrement:
<skip>
The instruction's result is the Original Value."
However, we were implementing it, for uniform atomic counters, as a
pre-decrement operation, as was the one available from GLSL.
Renamed the former nir intrinsic 'atomic_counter_dec*' to
'atomic_counter_pre_dec*' for clarification purposes, as it implements
a pre-decrement operation as specified for GLSL. From GLSL 4.50 spec,
section 8.10, "Atomic Counter Functions":
"uint atomicCounterDecrement (atomic_uint c)
Atomically
1. decrements the counter for c, and
2. returns the value resulting from the decrement operation.
These two steps are done atomically with respect to the atomic
counter functions in this table."
Added a new nir intrinsic 'atomic_counter_post_dec*' which implements
a post-decrement operation as required by SPIR-V.
v2: (Timothy Arceri)
* Add extra spec quotes on commit message
* Use "post" instead "pos" to avoid confusion with "position"
Signed-off-by: Antia Puentes <apuentes@igalia.com>
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
This pass searches for reasonably large local variables which can be
statically proven to be constant and moves them into shader constant
data. This is especially useful when large tables are baked into the
shader source code because they can be moved into a UBO by the driver to
reduce register pressure and make indirect access cheaper.
v2 (Jason Ekstrand):
- Use a size/align function to ensure we get the right alignments
- Use the newly added deref offset helpers
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit adds a concept to NIR of having a blob of constant data
associated with a shader. Instead of being a UBO or uniform that can be
manipulated by the client, this constant data considered part of the
shader and remains constant across all invocations of the given shader
until the end of time. To access this constant data from the shader, we
add a new load_constant intrinsic. The intention is that drivers will
eventually lower load_constant intrinsics to load_ubo, load_uniform, or
something similar. Constant data will be used by the optimization pass
in the next commit but this concept may also be useful for OpenCL.
v2 (Jason Ekstrand):
- Rename num_constants to constant_data_size (anholt)
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
These are very similar to the related function in nir_lower_io except
that they don't handle per-vertex or packed things (that could be added,
in theory) and they take a more detailed size/align function pointer.
One day, we should consider switching nir_lower_io over to using the
more detailed size/align functions and then we could make it use these
helpers instead of having its own.
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
We need to add loop terminators to the list in the order we come
across them otherwise if two or more have the same exit condition
we will select that last one rather than the first one even though
its unreachable.
This fix is for simple unrolls where we only have a single exit
point. When unrolling these type of loops the unreachable
terminators and their unreachable branch are removed prior to
unrolling. Because of the logic change we also switch some
list access in the complex unrolling logic to avoid breakage.
Fixes: 6772a17acc ("nir: Add a loop analysis pass")
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Now that SSA values can be derefs and they have special rules, we have
to be a bit more careful about our LCSSA phis. In particular, we need
to clean up in case LCSSA ended up creating a phi node for a deref.
This fixes validation issues with some Vulkan CTS tests with the new
deref instructions.
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
