Scale & Bias
glPixelTransfer()


Pixel Transfer GL_INDEX_ SHIFT
OFFSET
GL_ RED
GREEN
BLUE
ALPHA
DEPTH 		_SCALE
_BIAS

Post-Convolution GL_POST_CONVOLUTION_ RED
GREEN
BLUE
ALPHA 		_SCALE_EXT
_BIAS_EXT

Post-Color Matrix GL_POST_COLOR_MATRIX_ RED
GREEN
BLUE
ALPHA 		_SCALE_EXT
_BIAS_EXT

[Scale & Bias]