[vtk-developers] Texture Mapping of 2D Texture in vtkVolumeTextureMapper3D

pttomosoft at gmail.com pttomosoft at gmail.com
Wed Sep 25 17:13:48 EDT 2013


Hi.

I am using TextureMapper renderer for Volume Rendering.

vtkVolumeTextureMapper3D has a 2D Texture that contains ColorLookUp data as
follows :

glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_RGBA,
GL_UNSIGNED_BYTE, this->ColorLookup );

Can someone please explain to me how is this texture applied in the process
of Volume rendering?

I understand Texture Mapping involves pasting of a texture (eg. Image) on a
primitive (eg. blank rectangle). Assuming that GL_TEXTURE_2D is the texture,
what then is the primitive?

Thanks. 



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