![Hello_stp](https://wiki.arthus.net/assets/hello_cubetex_stp.png)

# STP : Semi-Transparency usage

This example shows the effect of activating Semi-Transparency on a textured primitive.

Use the `SELECT` button to switch primitive semi-transparency on and off.  
Use the `START` button to cycle throught the 4 transparency rates.

It also features a few C struct to facilitate access to the TIM file / pixel data.

See [https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_poly_stp](https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_poly_stp) for more information on how to convert your images to TIM while preserving transparency.

See [https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/TIM#transparency](https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/TIM#transparency) for mor details on transparency.  

## Documentation 

http://psx.arthus.net/sdk/Psy-Q/DOCS/LibOver47.pdf, p.107  
http://psx.arthus.net/sdk/Psy-Q/DOCS/FileFormat47.pdf, p.181  
http://psx.arthus.net/sdk/Psy-Q/DOCS/LibRef47.pdf, p.306, 345, 365