SptFade()

SptFade(bBuffer As bTftLibParameter1, bBrightness As bTftLibParameter2, bTransparent As bTftLibParameter3, wAlphaColor As wTftLibParameter1), Byte

Applies a fade (brightness) effect to a sprite buffer, enabling fade-in or fade-out visuals, with optional transparency support.

bBuffer – Source sprite buffer to be processed.

bBrightness – Brightness level (0–255):

0 – Fully dark (fade out)

255 – Original brightness (no fade)

bTransparent – Transparency mode:

0 – Apply effect 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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