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Re: opengl and textures
Sure sounds like your texture isn't being loaded up-front. Use glGetError
(for testing only) and make sure no OpenGL errors are being thrown in your
startup and draw. If so, chase 'em down.
Shots in the dark:
glTexEnvf ( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
glTexParameteri ( GL_TEXTURE_2D , GL_TEXTURE_WRAP_S, GL_CLAMP ) ;
glTexParameteri ( GL_TEXTURE_2D , GL_TEXTURE_WRAP_T, GL_CLAMP ) ;
glPixelStorei ( GL_UNPACK_ALIGNMENT, 1 ) ;
since you said it works the second time, without reloading the texture
Also what's your blend function set to?
|Is there any book/online-resource where i could find answer to such
Grab a copy of the OpenGL red book and turn to a texturing example.