QOpenGLTexture::PixelType does not contain a value for GL_UNSIGNED_INT_8_8_8_8_REV/GL_UNSIGNED_INT_8_8_8_8.
Although I can pass this value with casting, it would be more useful if these values are included.
Especially, GL_UNSIGNED_INT_8_8_8_8_REV is widely used because there're lots of reports that GL_UNSIGNED_INT_8_8_8_8_REV shows much better performance when transferring texture data on some GPUs and drivers.