Lionel Landwerlin
18bbcf9a63
Mesh shaders have per vertex block in URB pretty much identical to the VUE format. Let's just reuse that concept to do all of our layout in the payload attribute registers. This will ensure that we have consistent VUE layout between Mesh & non-Mesh pipelines. We need a new way of laying out the VUE though as we have to accomodate a HW constraint of maximum (per-primitive + per-vertex) of 32 varying. This means we cannot have 2 locations in the payload for things like PrimitiveID which can come from either the per-primitive or the per-vertex block. The new layout places the PrimitiveID at the end of the per-vertex attributes and shrinks the delivery dynamically if the mesh stage is active. The shader is compiled with a MOV_INDIRECT to read the PrimitiveID from the right location in the attributes. Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Ivan Briano <ivan.briano@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34109>
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