SptSepia()

SptSepia(bBuffer As bTftLibParameter1, bTransparent As bTftLibParameter2, wAlphaColor As wTftLibParameter1), Byte

Applies a sepia-tone filter to a sprite buffer, with optional transparency support.

bBuffer – Source sprite buffer to be processed.

bTransparent – Transparency mode:

0 – Apply sepia to all pixels

1 – Skip pixels matching the alpha-key color

wAlphaColor – Alpha-key color used when transparency is enabled.

Result:

0 – Success

1 – Invalid source buffer

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