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Particle Buffer Data Size

Calculate particle buffer bytes from allocated capacity, measured record size, copies and fixed overhead without inferring frame-rate performance.

Use this result well

Inputs that matter
Particle capacity, Stored bytes per particle, Buffer copies, Other included buffer bytes
Output to expect
Modeled buffer data size
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Particle buffer data size

Multiply an explicit particle capacity by the stored bytes per particle and number of buffer copies. Timing and draw batches require separate profiling. Stored buffer bytes; one MiB is 1,048,576 bytes. No draw-batch count or particles-per-frame budget is derived from byte size. Textures, renderer data and driver overhead must be included separately if needed. Allocated capacity can exceed the live particle count.

Data bytes = capacity × stored bytes per particle × buffer copies + entered fixed overhead

Updated: September 2026

Example Scenarios

An arithmetic illustration using the values shown. Replace them with measurements or assumptions for your own scope.

Particle capacity: 10000Stored bytes per particle: 48Buffer copies: 2Other included buffer bytes: 4096

→ 0.919434 MiB

FAQ

No. Particle simulation, rendering and overdraw require measurements.

Use the actual stored structure or buffer stride, including padding.

Yes. Only the explicitly entered fixed overhead remains in that case.

About Particle Buffer Data Size

Multiply an explicit particle capacity by the stored bytes per particle and number of buffer copies. Timing and draw batches require separate profiling.