Irrlicht Engine

Posted: **Thu Apr 22, 2004 1:39 pm**

Hi,

I'm new to Irrlicht and 3D in general so I apologize if I don't use the right term for everything.
My problem is when I try to draw a 2D image with a alpha channel (to make transparency) in OpenGL. I tried to use Software render and it worked fine. I have yet to test with Directx.

Check my image and you will see what my problem is. The alpha channel color is not black and I get some weird black things around my image. The image format is BMP. I read on other post problem with transparency with PNG and TGA but not BMP.

Posted: **Fri Apr 23, 2004 8:56 am**

perhaps you can use a color Key

Code: Select all

virtual void irr::video::IVideoDriver::makeColorKeyTexture  (  video::ITexture *    texture,  
  core::position2d< s32 >    colorKeyPixelPos 
 )

Posted: **Fri Apr 23, 2004 11:57 am**

I already done that to make the alpha channel. Check my post in the bug forum about image quality for the rendering of an image with every api.

Irrlicht Engine

OpenGL and 2D Image Alpha Channel

OpenGL and 2D Image Alpha Channel