The original implementation of SPV_EXT_descriptor_indexing was extremely
paranoid about the NonUniform qualifier, trying to fetch it from every
possible location and propagate it through access chains etc. However,
the Vulkan spec is quite nice to us on this and has very strict rules
for where the NonUniform decoration has to be placed. For image and
texture operations, we can search for the decoration on the spot when we
process the image or texture op. For pointers, we continue putting it
on the pointer but we don't bother trying to do anything silly like
propagate it through casts.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5278>
The GLSL to NIR compiler supports the LowerTessLevel flag to convert
gl_TessLevelInner/Outer from their GLSL declarations as arrays of
floats to vec4/vec2s to better match how they are represented in
hardware.
This commit adds the similar support to the SPIR-V to NIR compiler so
turnip can use the same IR3/NIR tess lowering passes as freedreno.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5059>
This commit adds a tess_levels_are_sysvals flag to
spirv_to_nir_options similar to GLSLTessLevelsAsInputs in the GLSL to
NIR compiler options. This will be used by turnip as the tess IR3
lowering pass (ir3_nir_lower_tess) operates on TessLevelInner and
TessLevelOuter in the DS as sysvals.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5059>
This extension only allows HLSL shader compilers to optionally embed
unambiguous type information which can be safely ignored by the driver.
This fixes a crash with the recent Vulkan backend of Path Of Exile
(it uses the extension without checking if it's supported).
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5237>
This implements OpCopyObject as a blind copy and propagates the
access mask properly even if the source object type isn't a SSA
value.
This fixes some recent dEQP-VK.descriptor_indexing.* failures
since CTS changed and now apply nonUniformEXT after constructing
a combined image/sampler.
Original patch is from Jason Ekstrand.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4909>
We were accidentally asserting that the value had to be a vtn_ssa_value
which isn't true if it, for instance, comes from a spec constant.
Fixes: fb282a68bc "spirv: Implement OpConvertPtrToU and OpConvertUToPtr"
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4675>
After the decorations of a variable are evaluated, propagate the
access flag to the associated vtn_pointer. This was done when
creating the pointer but at that point there was no access flags for
the variable.
Inline the pointer creation to make this point clearer, in isolation
the helper made the impression that the value was being propagated.
Issue found by Ken.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4620>
This also makes spirv_to_nir a bit simpler because the new
nir_vector_insert helper automatically handles a constant component
selector like nir_vector_extract does.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4495>
The nir_builder helper already handles checking if the component
selector is an immediate and returns an undef in the OOB case.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4495>
This adds support for OpVariable having an initializer that points to
another variable, rather than a constant. In this case, the variable is
initialized to a pointer to the other variable.
Fixes Vulkan CTS tests:
dEQP-VK.spirv_assembly.instruction.compute.variable_init.private.*
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3047>
The caller is responsible for setting up the ubo_addr_format value as
contrary to shared and global, it's not controlled by the spirv.
Right now clovers implementation of CL constant memory uses a 24/8 bit format
to encode the buffer index and offset, but that code is dead as all backends
treat constants as global memory to workaround annoying issues within OpenCL.
Maybe that will change, maybe not. But just in case somebody wants to look at
it, add a toggle for this inside vtn.
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Fixes: 9cc4c2c916 "spirv: Add a vtn_decorate_pointer helper"
Tested-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This commit makes two major changes. First, we add a second case to
OpLoad for sampled images which constructs a vtn_sampled_image and
stashes that rather than stashing a pointer to the combined image
sampler like we do for bare samplers and images. This should be more in
line with how SPIR-V is intended to work and hopefully doesn't cause any
weird problems. The second is a rework of vtn_handle_texture to assume
that everything has an image but not everything has a sampler. We also
add a vtn_fail_if for the case where a texture instructions require a
sampler but none is provided.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This helper makes a duplicate copy of the pointer if any new access
flags are set at this stage. This way we don't end up propagating
access flags further than they actual SPIR-V decorations. In several
instances where we create new pointers, we still call the decoration
helper directly because no copy is needed.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
We have types on all vtn_values at this point so there's no reason to
carry the redundant type information.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Emit barriers with semantics matching the access operand and the
storage class of the pointer.
v2: Fix order of visible / available emission relative to the
operations. (Bas)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Intel drivers are not using this anymore, and turnip still don't have
Compute Shaders, so won't make a difference to stop using this option.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Rob Clark <robdclark@chromium.org>
Lowers BaseVertex to the correct system value for OpenGL.
v2: use options->environment rather than adding a new flag to
spirv_to_nir_options
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
We can have a access flag already set here so just augment the
existing ones.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 0fb61dfdeb ("spirv: propagate access qualifiers through ssa & pointer")
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Not only variables can be flagged as NonUniformEXT but also
expressions. We're currently ignoring it in an expression such as :
imageLoad(data[nonuniformEXT(rIndex)], 0)
The associated SPIRV :
OpDecorate %69 NonUniformEXT
...
%69 = OpLoad %61 %68
This changes propagates access qualifiers through ssa & pointers so
that when it hits a OpLoad/OpStore style instructions, qualifiers are
not forgotten.
Fixes failure the following tests :
dEQP-VK.descriptor_indexing.*
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 8ed583fe52 ("spirv: Handle the NonUniformEXT decoration")
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This refactor allows for common code to apply decoration on all
ssa/pointer values. In particular this will allow to propagage access
qualifiers.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Suggested-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This decoration can be ignored, so we can just skip the next steps.
Otherwise we'd have to also handle it in apply_var_decoration.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
On AMD, FragCoord should be a sysval because it is handled separately
from all the other inputs. We were already doing this in radeonsi, but
we weren't doing it with radv. It'll be much more annoying to handle
VARYING_SLOT_POS in fragment shaders when we let NIR lower FS inputs for
us, so here we add an option so that radv can get it as a system value.
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
The data for some nir variables is only filled up for some specific
modes. We need now too for UBO/SSBO, as such info would be used when
linking for OpenGL (ARB_gl_spirv).
There is an existing comment just before that code (starts with XXX)
that points that binding still needs to be filled up for uniform
variables at that point, and that should be fixed, although it doesn't
specify why that's a problem or what would be the alternative. For now
doing the same for UBO/SSBO, and will hope that the future fixing is
done for all of them.
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Providing nir variables for UBO/SSBO it is not required for Vulkan,
but it is needed for OpenGL (ARB_gl_spirv), like for example, to
gather info from the UBO/SSBO while linking.
In opposite with most cases where the nir variables is created, here
the type assigned is the full type (not just the bare type). This is
needed because while linking using the nir shader we need the explicit
layout info (explicit stride, explicit offset, row_major, etc).
Also, we need to assign an interface type, used also on the OpenGL
linker if it is a UBO/SSBO. See ir_variable::is_in_buffer_block as
example.
v2: assign interface_type to be the variable type, not need to be
arrayness (Timothy)
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
In ARB_gl_spirv we'll be able to use variables for uniform buffers, so
don't use the descriptor intrinsics to lower the block access.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
When creating function parameters, we create pointers from ssa
values, this creates nir casts with stride 0, however we have
no where else to get this value from. Later passes to lower
explicit io need this stride value to do the right thing.
Reviewed-by: Karol Herbst <kherbst@redhat.com>
SPV_GOOGLE_decorate_string and SPV_GOOGLE_hlsl_functionality1 were
incorporated to SPIR-V. Let's pick the names used by SPIR-V core.
Reviewed-by: Karol Herbst <kherbst@redhat.com>
And change vtn_storage_class_to_mode() to accept NULL as
interface_type. In this case, if we have a SpvStorageClassUniform, we
assume it is uses an ubo_addr_format, like the code being replaced by
the helper.
That assumption is a problem, but no different than the previous
code.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Corresponding to SpvStorageClassImage. We see pointers for that
storage class in tests, but don't use the storage class any further.
Adding this so that we can call vtn_mode_to_address_format() for all
supported pointers.
v2: Fail when trying to create a SpvStorageClassImage
variable. (Jason)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Handles all the modes and we can use it in combination with
nir_address_format_to_glsl_type() to replace the
vtn_ptr_type_for_mode() helper. Since the new helper is more generic,
moved the assertions from the old one to the call sites.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Just the mode is needed to decide whether SSA offsets are needed, so
make a function that takes that and reuse it for
vtn_pointer_uses_ssa_offset().
This will be used for constant null pointers, that won't have a
vtn_pointer handy.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
v2: Renamed from vtn_interface_type. (Jason)
Accept any type not only pointers.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Jason Ekstrand
Jonathan Marek
Rhys Perry
Brian Ho
Samuel Pitoiset
Caio Marcelo de Oliveira Filho
Arcady Goldmints-Orlov
Karol Herbst
Marek Olšák
Antia Puentes
Lionel Landwerlin
Connor Abbott
Alejandro Piñeiro
Dave Airlie