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iluInvertAlpha

The iluInvertAlpha function inverts the alpha of the currently bound image.

 

ILboolean iluInvertAlpha(
  ILvoid
);

Parameters

None

Remarks

iluInvertAlpha inverts the alpha channel of the currently bound image.

Error Codes

ILU_ILLEGAL_OPERATION - There is currently no image bound. Use ilGenImages and ilBindImage before calling this function. Also, the image may not have an alpha channel to invert.

See Also

ilGenImages, ilBindImage, ilGetAlpha