hi everyone, i am writing a demo, that uses texture blending. i am storing the bitmap inside the .exe file with the help of tutorial 38. but the problem is, i am using a texture which has "bit depth " of 32. becos of which notin is getting displayed. instead of the texture, a white QUAD is being displayed. normal textures which have a bit depth of 24 r working fine. and also i want to know the difference of gluBuildmipmaps and glTexture2d ie which situation demands the use of specific function. please help me in this regard. thank you. Srinivas .U