goxpyriment

Test Stream Text

Demonstrates PresentStreamOfImages for RSVP word presentation: a sequence of words is displayed at a fixed rate, VSYNC-locked, with timing logs showing actual onset and offset times.

Use this to verify text-RSVP timing accuracy on your hardware.

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Prerequisites

• Go 1.25+
• SDL3 development libraries (sudo apt install libsdl3-dev on Ubuntu/Debian)

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Running

go run main.go

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Output

Data are saved to goxpy_data/ as a .xpd file (CSV with a metadata header):

Column	Description
word_index	Position in the stream
word	The presented word
target_on_ms	Requested onset time (ms)
actual_onset_ms	Measured onset time (ms)
actual_offset_ms	Measured offset time (ms)

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Note

This is a technical test for timing verification. It is mainly useful for framework developers.

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