d20049b430
Mesh shader workgroups always have the same amount of subgroups. When the API workgroup size is the same as the real workgroup size, this is a small optimization (using a constant instead of a shader arg). When the API workgroup size is smaller than the real workgroup size (eg. when the number of output vertices or primitves is greater than the API workgroup size on RDNA 2), this fixes a potential bug because num_subgroups would return the "real" workgroup size instead of the API one. Cc: mesa-stable Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Qiang Yu <yuq825@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37947>