-/**
- * Texel fetch function prototype. We use texel fetch functions to
- * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
- * texture images. These functions help to isolate us from the gritty
- * details of all the various texture image encodings.
- *
- * \param texImage texture image.
- * \param col texel column.
- * \param row texel row.
- * \param img texel image level/layer.
- * \param texelOut output texel (up to 4 GLchans)
- */
-typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage,
- GLint col, GLint row, GLint img,
- GLchan *texelOut );
-
-/**
- * As above, but returns floats.
- * Used for depth component images and for upcoming signed/float
- * texture images.
- */
-typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage,
- GLint col, GLint row, GLint img,
- GLfloat *texelOut );
-
-
-typedef void (*StoreTexelFunc)(struct gl_texture_image *texImage,
- GLint col, GLint row, GLint img,
- const void *texel);
-
-