Push constants have been a weird edge-case for a while in that they have
explitic offsets but we've been internally building access chains for
them. This mostly works but it means that passing pointers to push
constants through as function arguments is broken. The easy thing to do
for now is to just treat them like UBOs or SSBOs only without a block
index. This does loose a bit of information since we no longer have an
accurate access range and any indirect access will look like it could
read the whole block. Unfortunately, there's not much we can do about
that. Once NIR derefs get a bit more powerful, we can plumb these
through as derefs and be able to reason about them again.
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Before, we were doing structure splitting in spirv_to_nir.
Unfortunately, this doesn't really work when you think about passing
struct pointers into functions. Doing it later in NIR is a much better
plan.
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The only thing still using old-school drefs are function calls.
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
When SpvDecorationBinding is encountered in the SPIR-V source it now
sets explicit_binding on the nir_variable. This will be used to
determine whether to initialise sampler and image uniforms with the
binding value.
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
vtn_variable_mode_image and _sampler are instead replaced with
vtn_variable_mode_uniform which encompasses both of them. In the few
places where it was neccessary to distinguish between the two, the
GLSL type of the pointer is used instead.
The main reason to do this is that on OpenGL it is permitted to put
images and samplers into structs and declare a uniform with them. That
means that variables can now have a mix of uniform, sampler and image
modes so picking a single one of those modes for a variable no longer
makes sense.
This fixes OpLoad on a sampler within a struct which was previously
using the variable mode to determine whether it was a sampler or not.
The type of the variable is a struct so it was not being considered to
be uniform mode even though the member being loaded should be sampler
mode.
The previous code appeared to be using var->interface_type as a place
to store the type of the variable without the enclosing array for
images and samplers. I guess this worked because opaque types can not
appear in interfaces so the interface_type is sort of unused. This
patch removes the overloading of var->interface_type and any places
that needed the type without the array can now just deduce it from
var->type.
v2: squash in this patch the changes to anv/nir (Timothy)
Signed-off-by: Eduardo Lima <elima@igalia.com>
Signed-off-by: Neil Roberts <nroberts@igalia.com
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
They are supported by SPIR-V for ARB_gl_spirv.
v2 (changes on top of Nicolai's original patch):
* Handle UniformConstant storage class for uniforms other than
samplers and images. (Eduardo Lima)
* Handle location decoration also for samplers and images. (Eduardo
Lima)
* Rebase update (spirv_to_nir options added, logging changes, and
others) (Alejandro Piñeiro)
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Eduardo Lima <elima@igalia.com>
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
v2:
An attempt to support SpvExecutionModeStencilRefReplacingEXT's behavior
also follows, with the interpretation to said mode being we prevent
writes to the built-in FragStencilRefEXT variable when the execution
mode isn't set.
v3:
A more cautious reading of 1db44252d0 led
me to a missing change that would stop (what I later discovered were)
GPU hangs on the CTS test written to exercise this.
v4:
Turn FragStencilRefEXT decoration usage without StencilRefReplacingEXT
mode into a warning, instead of trying to make the variable read-only.
If we are to follow the originating extension on GL, the built-in
variable in question should never be readable anyway.
v5/v6: rebases.
v7:
Fix check for gen9 lost in rebase. (Ilia)
Reduce the scope of the bool used to track whether
SpvExecutionModeStencilRefReplacingEXT was used. Was in shader_info,
moved to vtn_builder. (Jason)
v8:
Assert for fragment shader handling StencilRefReplacingEXT execution
mode. (Caio)
Remove warning logic, since an entry point might not have
StencilRefReplacingEXT execution mode, but the global output variable
might still exist for another entry point in the module. (Jason)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This behaviour was changed in 1e5b09f42f. The commit message
for that says it is just a “tidy up” so my assumption is that the
behaviour change was a mistake. It’s a little hard to decipher looking
at the diff, but the previous code before that patch was:
if (builtin == SpvBuiltInFragCoord || builtin == SpvBuiltInSamplePosition)
nir_var->data.origin_upper_left = b->origin_upper_left;
if (builtin == SpvBuiltInFragCoord)
nir_var->data.pixel_center_integer = b->pixel_center_integer;
After the patch the code was:
case SpvBuiltInSamplePosition:
nir_var->data.origin_upper_left = b->origin_upper_left;
/* fallthrough */
case SpvBuiltInFragCoord:
nir_var->data.pixel_center_integer = b->pixel_center_integer;
break;
Before the patch origin_upper_left affected both builtins and
pixel_center_integer only affected FragCoord. After the patch
origin_upper_left only affects SamplePosition and pixel_center_integer
affects both variables.
This patch tries to restore the previous behaviour by changing the
code to:
case SpvBuiltInFragCoord:
nir_var->data.pixel_center_integer = b->pixel_center_integer;
/* fallthrough */
case SpvBuiltInSamplePosition:
nir_var->data.origin_upper_left = b->origin_upper_left;
break;
This change will be important for ARB_gl_spirv which is meant to
support OriginLowerLeft.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Fixes: 1e5b09f42f "spirv: Tidy some repeated if checks..."
The base vertex in Vulkan is different from GL in that for non-indexed
primitives the value is taken from the firstVertex parameter instead
of being set to zero. This coincides with the new SYSTEM_VALUE_FIRST_VERTEX
instead of BASE_VERTEX.
v2 (idr): Add comment describing why SYSTEM_VALUE_FIRST_VERTEX is used
for SpvBuiltInBaseVertex. Suggested by Jason.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> [v1]
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
OpenCL kernels also have int8/uint8.
v2: remove changes in nir_search as Jason posted a patch for that
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
This capability allows gl_ViewportIndex and gl_Layer to also be used
as outputs in Vertex and Tesselation shaders.
v2: Make conditional to the capability, add gl_Layer, add tesselation
shaders. (Iago)
v3: Don't export to tesselation control shader.
v4: Add Reviewd-by tag.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
The introduction of 16-bit types with VK_KHR_16bit_storages implies that
push constant offsets could be multiple of 2-bytes. Some assertions are
updated so offsets should be just multiple of size of the base type but
in some cases we can not assume it as doubles aren't aligned to 8 bytes
in some cases.
For 16-bit types, the push constant offset takes into account the
internal offset in the 32-bit uniform bucket adding 2-bytes when we access
not 32-bit aligned elements. In all 32-bit aligned cases it just becomes 0.
v2: Assert offsets to be aligned to the dest type size. (Jason Ekstrand)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Range in 16-bit push constants load was being calculated
wrongly using 4-bytes per element instead of 2-bytes as it
should be.
v2: Use glsl_get_bit_size instead of if statement
(Jason Ekstrand)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
The SPIR-V parser splits in/out struct variables and creates
a separate variable for each first-level member of the struct.
When the struct variable has an initializer this means that we also
need to split the initializer.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Technically, the GLSLang bug related to this can also affect SSBO writes
where the bool -> uint conversion is missing. However, the only known
shipping application with an old enough version of GLSLang to cause
issues with this is the new DOOM game so we keep the workaround as small
as possible.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104424
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Previously, we were storing a pointer to the vtn_value because we use it
to look up decorations when we create input/output variables. This
works, but it also may be useful to have the id itself so we may as well
store that instead.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Now that higher levels are enforcing decoration sanity, we don't need
the vtn_asserts here. This function *should* be safe but we still want
a few well-placed regular asserts in case something goes awry.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Since we switched over to lowering SLM access directly in SPIR-V -> NIR,
we no longer have vtn_variables for SLM. It's all safe as with UBOs and
SSBOs but we need to let it through in the assert.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104213
Fixes: 8761a04d0d
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
There is no chain, so checking the length ends with a SEGFAULT.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103579
Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
v2: Added more missing implementations of 16-bit types. (Jason Ekstrand)
v3: Store values in values[0].u16[i] (Jason Ekstrand)
Include switches based on bitsize for 16-bit types
(Chema Casanova)
v4: Coding style fixes (Jason Ekstrand)
Use vtn_u64_literal and u64[0] at 64-bit SpvOpConstant (Jason Ekstrand)
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Signed-off-by: Eduardo Lima <elima@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
The SPIR-V spec is a bit underspecified when it comes to exactly how
you're allowed to use OpPtrAccessChain and what it means in certain edge
cases. In particular, what if the base pointer of the OpPtrAccessChain
points to the base struct of an SSBO instead of an element in that SSBO.
The original variable pointers implementation in mesa assumed that you
weren't allowed to do an OpPtrAccessChain that adjusted the block index
and asserted such. However, there are some CTS tests that do this and,
if the CTS does it, someone will do it in the wild so we should probably
handle it. With this commit, we significantly reduce our assumptions
and should be able to handle more-or-less anything.
The one assumption we still make for correctness is that if we see an
OpPtrAccessChain on a pointer to a struct decorated block that the block
index should be adjusted. In theory, someone could try to put an array
stride on such a pointer and try to make the SSBO an implicit array of
the base struct and we would not give them what they want. That said,
any index other than 0 would count as an out-of-bounds access which is
invalid.
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Before, we always left workgroup variables as shared nir_variables and
let the driver call nir_lower_io. This adds an option to do the
lowering directly in spirv_to_nir. To do this, we implicitly assign the
variables a std430 layout and then treat them like a UBO or SSBO and
immediately lower all the way to an offset.
As a side-effect, the spirv_to_nir pass now handles variable pointers
for workgroup variables.
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Up until now, all pointers have been ivec2s. We're about to add support
for pointers to workgroup storage and those are going to be uints.
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
There is no good reason why we should have the same logic repeated in
get_vulkan_resource_index and vtn_ssa_offset_pointer_dereference. If
we're a bit more careful about how we do things, we can just use the one
function and get rid of the other entirely. This also makes the push
constant special case a lot more clear.
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This commit moves them both into vtn_variables.c towards the top, makes
them take a vtn_builder, and replaces a hand-rolled instance of
is_external_block with a function call.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This makes us key off of !offset instead of !block_index. It also puts
the guts inside a switch statement so that we can handle more than just
UBOs and SSBOs.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This parallels what we do for vtn_block_load except that we don't yet
support anything except SSBO loads through this path.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This is equivalent and means we don't have resource index code scattered
about.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
We have a nir_builder and it has an impl field.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
We should use the result type of the OpSampledImage opcode, rather than
the type of the underlying image/samplers.
This resolves an issue when using separate images and shadow samplers
with glslang. Example:
layout (...) uniform samplerShadow s0;
layout (...) uniform texture2D res0;
...
float result = textureLod(sampler2DShadow(res0, s0), uv, 0);
For this, for the combined OpSampledImage, the type of the base image
was being used (which does not have the Depth flag set, whereas the
result type does), therefore it was not being recognised as a shadow
sampler. This led to the wrong LLVM intrinsics being emitted by RADV.
Signed-off-by: Alex Smith <asmith@feralinteractive.com>
Cc: "17.2 17.3" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Currently we support 32-bit indexes/offsets all over the driver, so we
convert them to that bit size.
Fixes dEQP-VK.spirv_assembly.instruction.*.indexing.*
v2: Use u2u32 instead (Jason).
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
I have no idea how this got missed but it's been missing since forever.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Quiets a number of uninitialized variable warnings in clang.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Now that we have proper pointer types, we can be more sensible about the
way we set up function arguments and deal with the two cases of pointer
vs. SSA parameters distinctly.
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
Jason Ekstrand
Neil Roberts
Nicolai Hähnle
Gustavo Lima Chaves
Karol Herbst
Caio Marcelo de Oliveira Filho
Jose Maria Casanova Crespo
Samuel Pitoiset
Iago Toral Quiroga
Bas Nieuwenhuizen
Eduardo Lima Mitev
Alex Smith
Samuel Iglesias Gonsálvez
Jason Ekstrand
Matt Turner