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mesa: skip extra state updates for clear calls

Illia Polishchuk requested to merge GL/mesa:skip_extra_state_updates_for_clear into main

The glClear call updates draw state in the same way as other draw calls with _mesa_update_state func

If currently used shader uses textures, _mesa_update_state will try to update the shader texture state

But if the texture not set yet, before glClear call, it will detect incompleted texture and will create dummy texture with default values (see the update_single_program_texture func). And this will be complete waste of time for glClear

Closes: #7128 (closed)

Reviewed-by: default avatarMarek Olšák marek.olsak@amd.com

Edited by Illia Polishchuk

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