hi everyone, I made a simple program to draw an image, I’m using C# so I convert an image file to a bitmap in .Net then use Bitmap.LockBits and glDrawPixels to draw the image. But I can draw .gif images successfully the first time only, from the second time (I changed its raster position) I’ll get a completely black screen.
With .jpg or .png or .bmp I got no such problem.
Does any one having same problem with me ? Thanks for any help.