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Mouse & Transparency

Started by February 09, 2002 08:55 PM
0 comments, last by Jamazon 23 years ago
Hi I want to use a 3d mouse in opengl, shading. How do i put the mouse on the screen without using the translate() function - that would move it too far. I don''t like the default mouse because it seems to flicker so is there a way to add your own mouse?? Also, when I try to do transparancy with blending the whole picture becomes transparent, how do I make it so that only the bits with no color (black or white) are the only things that become transparent - using a texture mapped .bmp? Please post code. Thanks.
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Instead of using translate you could translate the mesh yourself, but that would defeat the purpose of translate().
If it moves too far using translate(x,y) then try (x*.9f, y*.9f)
etc.

For the transparency you should check out the NeHe TGA loader tutorial (#25).
The TGA file format supports RGB+alpha channels, BMPs don''t normally.

Or you could use additive blending instead of alpha blending, but it wouldn''t be as nice.

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