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radv: pre-calc vertex buffer descriptor size on pipeline object

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util_bitcount has a nonzero cost, and calling it like this in a hotpath
generates unnecessary overhead

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11525>
This commit is contained in:
Mike Blumenkrantz
2021-06-02 12:55:34 -04:00
committed by Marge Bot
parent 936c21d376
commit c0397a42ce
3 changed files with 4 additions and 5 deletions
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src/amd/vulkan/radv_pipeline.c
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@@ -5305,6 +5305,7 @@ radv_pipeline_init_vertex_input_state(struct radv_pipeline *pipeline,
pipeline->use_per_attribute_vb_descs = info->vs.use_per_attribute_vb_descs;
pipeline->vb_desc_usage_mask = info->vs.vb_desc_usage_mask;
pipeline->vb_desc_alloc_size = util_bitcount(pipeline->vb_desc_usage_mask) * 16;
}
static struct radv_shader_variant *