Since DXIL does not have a way to get the base/first vertex and base
instance as well as using a zero-based vertex index, these values need
to be passed in via a constant buffer.
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12707>
Since DXIL does not have a way to get the number of workgroups used
during dispatch with a system-value, these numbers need to be passed in
via a constant buffer.
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12707>
We need this to get e.g. a default lod for some instructions when it is
not provided.
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12462>
Creating resource handles upfront works well while we have fixed-size resource
counts, but once we start talking about bindless, having arrays or even sets
of handles becomes prohibitive. It also precludes dynamic indexing for textures.
Instead, rely on the load_vulkan_descriptor instruction for UBO/SSBO, and undo
nir_lower_samplers so we continue to have deref chains for image/sampler accesses.
Then, emit handles at the end of a deref chain - the chain should only have
array offsets, so once we get to a type that's not an array anymore, we can
emit the handle.
Reviewed-by: Enrico Galli <enrico.galli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10288>
First, we need to lower alu to scalar so that all alu ops on doubles
only take one input. Then, we can use our new double lowering pass.
Reviewed-by: Enrico Galli <enrico.galli@intel.com>
Reviewed-by: Michael Tang <tangm@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10063>
Clip/cull only needs a little bit of lowering before nir_to_dxil can
handle it. Specifically, we just need to split apart arrays that
straddle the 4-component boundary of location, so that the signature
builder can handle it.
To do that cleanly, we need to add some lowering and optimization passes:
* nir_lower_clip_cull_distance_arrays: Merge clip/cull into a single array,
which is similar to DXIL's requirements here.
* nir_lower_io_to_temporaries: Ensure that we only have one non-indirect write
to the clip/cull output.
* nir_split_var_copies and nir_lower_var_copies: Ensure that each array entry
has an independent write with a constant index
* Optimization loop: Make sure that there's no extra derefs in the way between
deref_var for the output, deref_array for the component, and store_deref.
Then we can actually lower the clip/cull array cleanly.
Still to do is to sort the variables and add driver_location.
Reviewed-by: Bill Kristiansen <billkris@microsoft.com>
Reviewed-by: Michael Tang <tangm@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9846>
