Lesson: 24 is about loading .tga's to use as textures. I haven't done any significant changes to the code. The only thing I did was add: gluBuild2DMipmaps(GL_TEXTURE_2D, 3, texture[0].width, texture[0].height, type, GL_UNSIGNED_BYTE, texture[0].imageData); instead of: glTexImage2D(GL_TEXTURE_2D, 0, type, texture[0].width, texture[0].height, 0, type, GL_UNSIGNED_BYTE, texture[0].imageData); And since I don't have any .tga's, I've converted a couple .jpg's that I have to 32 bit .tga's, but when the code compares TGAheader with TGAcompare they end up being different. I've done some testing, and header[4] does equal 32, but later on when it calls malloc(imageSize) and does the fread(texture->imageData, 1, imageSize, file), the fread does not equal imageSize. For the .tga I tried it with, imageSize = 393216 bytes which = 384 kb, right? Well the file size of the .tga according to my computer is 380 kb. Any idea as to what's going wrong?