Color Keys too large for System.Int32 ???

Roof Top Pew Wee · 2003-12-14T23:24:09

To quote the DX SDK for the TextureLoader.FromFile method: colorKey System.Int32. [in] An Int32 value to replace with transparent black, or 0 to disable the color key. This is always a 32-bit ARGB color that is independent of the source image format. Alpha is significant, and usually should be set to FF for opaque color keys. For example, for opaque black, the value is equal to 0xFF000000. So I thought I could pass 0xFF000000 as the parameter for colorKey. But nope, the compiler cries that I''m trying to pass a uint and the function takes an int. So I convert it to an int, and the value is too large. Heh, come to find that the 0xAARRGGBB holds a little over 4 billion possible values. That''s a little too large for a System.Int32. Just as a test, I did Color.FromArgb(255,0,0,0).ToArgb() which compiled fine, but black wasn''t transparent. Anyone had this prob before, or even better, a solution? --Vic--

Graphics and GPU Programming Programming

Started by Roof Top Pew Wee December 13, 2003 01:42 AM

10 comments, last by Roof Top Pew Wee 20 years, 4 months ago

Roof Top Pew Wee

230

Author

December 14, 2003 09:14 AM

After trying a few colors, it seems I can get other colors to work, but not black. Anyone else had this problem?

--Vic--

FlatRedBall C# XNA Game Engine

Telamon

157

December 14, 2003 11:24 PM

Yes! I''m having that same problem. The MDX 9 docs are worthless. I have no idea how to make it work.

Sorry, that was probably a little unhelpful. Still, if anyone out there knows the answer, I''d also be interested!

----------------------------------------
Let be be finale of seem, seems to me.
----------------------------------------

Coding:
http://www.stanford.edu/~jjshed/coding

Miscellany:
http://www.stanford.edu/~jjshed

Shedletsky's Bits: A Blog | ROBLOX | Twitter
Time held me green and dying
Though I sang in my chains like the sea...

Color Keys too large for System.Int32 ???

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Color Keys too large for System.Int32 ???

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines