int32 ReadTextureSubBuffer( Image p_oImage, Texture p_oTex, int32 p_nLevel, Int32Vector p_nOffset, Int32Vector p_nDims )

Parameter Type	Parameter Name	Documentation
<Image>	p_oImage	A pointer to the destination <Image>.
<Texture>	p_oTex	A pointer to the <Texture> that has been bound to the GPU.
int32	p_nLevel	The MIP map level to read.
<Int32Vector>	p_nOffset	A pointer to a <Int32Vector> object where components 0, 1, and 2 store the read offset along X, Y, and Z. For example: to read a 64×64 sub-image of a 256×256 <Texture> starting at the pixel (3, 4), set the [0] and [1] component of this vector to (3, 4). Then set the set the [0] and [1] components of the dimension vector to (64, 64). The [3] component of this vector is not used.
<Int32Vector>	p_nDims	A pointer to a <Int32Vector> object where components 0, 1, and 2 store the width, height, and depth of the read. The depth value, which is stored in component [2], should usually be 1. For example: to read a 64×64 sub-image of a 256×256 <Texture> starting at the pixel (3, 4), set the [0] and [1] component of the offset vector to (3, 4). Then set the set the [0], [1], and [2] component of this vector to (64, 64, 1). The [3] component of this vector is not used.