mi::shader_v3::Mip_remap Class Reference

Texture re-mapping interface. More...

#include <shader_mipremap.h>

List of all members.

Public Member Functions
virtual void	coord_transform (miVector2d &tex_coord) const =0
	Transformation of texture coordinates.
virtual void	coord_remap (miImg_image *image, int image_coord[2]) const =0
	Remapping of texture coordinates.

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Detailed Description

Texture re-mapping interface.

This class provides texture coordinate transformation for use in texture filtering. The shader function Interface::lookup_filter_color_texture expects an implementation of this class as a parameter.

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Member Function Documentation

virtual void mi::shader_v3::Mip_remap::coord_remap	(	miImg_image *	image,
		int	image_coord[2]
	)		const [pure virtual]

Remapping of texture coordinates.

This can be used to implement texture wrapping modes like torus, alternating, clamping), and cropping.

Parameters:

[in]	image	texture image
[in,out]	image_coord	texture coordinate in image space, with image_coord[0]: [0..mi_img_get_width(image)-1], image_coord[1]: [0..mi_img_get_height(image)-1]

virtual void mi::shader_v3::Mip_remap::coord_transform

(

miVector2d &

tex_coord

)

const [pure virtual]

Transformation of texture coordinates.

This can be used to apply affine transformations to the coordinates, including texture repeat/scaling.

Parameters:

[in,out]

tex_coord

uv coordinate to transform