ITexture alpha

[Guest]

Hello everyone.

I wnould like to know if there is anyway to set an alpha value to all pixels from an ITexture object?

[RadBrad]

I think...

Code: Select all

irr::video::ITexture::getAlpha(s16 color); 

So...

Code: Select all

ITexture->getAlpha(s16 color);

(make sure you have namespaces turned on in your program header)

[neotoma]

You can set the Alpha-Value directly.
Use the lock(-method on texture to get the Pointer to the Texture-Data (the Image). And if you use 32-Bit as default-Texture creation, you can set the Alpha-Value as a Byte.

example (not tested):

Code: Select all

unsigned char* pData = texture->lock();
s32 offset = (y*texture->getPitch())+(x*4);
(pData+offset)[3] = newAlphaByte;
texture->unlock()

Mike