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GLPRIORITIZETEXTURES(3G)                                                            GLPRIORITIZETEXTURES(3G)



NAME
       glPrioritizeTextures - set texture residence priority


C SPECIFICATION
       void glPrioritizeTextures( GLsizei n,
                                  const GLuint *textures,
                                  const GLclampf *priorities )


PARAMETERS
       n           Specifies the number of textures to be prioritized.

       textures    Specifies an array containing the names of the textures to be prioritized.

       priorities  Specifies  an array containing the texture priorities.  A priority given in an element of
                   priorities applies to the texture named by the corresponding element of textures.

DESCRIPTION
       glPrioritizeTextures assigns the n texture priorities given in priorities to the n textures named  in
       textures.

       The GL establishes a ``working set'' of textures that are resident in texture memory.  These textures
       may be bound to a texture target much more efficiently than textures that are not resident.  By spec-ifying specifying
       ifying  a  priority for each texture, glPrioritizeTextures allows applications to guide the GL imple-mentation implementation
       mentation in determining which textures should be resident.

       The priorities given in priorities are clamped to the range [0,1] before they are assigned.  0  indi-cates indicates
       cates the lowest priority; textures with priority 0 are least likely to be resident.  1 indicates the
       highest priority; textures with priority 1 are most likely to be resident.  However, textures are not
       guaranteed to be resident until they are used.

       glPrioritizeTextures silently ignores attempts to prioritize texture 0, or any texture name that does
       not correspond to an existing texture.

       glPrioritizeTextures does not require that any of the textures named by textures be bound to  a  tex-ture texture
       ture target.  glTexParameter may also be used to set a texture's priority, but only if the texture is
       currently bound.  This is the only way to set the priority of a default texture.

NOTES
       glPrioritizeTextures is available only if the GL version is 1.1 or greater.

ERRORS
       GL_INVALID_VALUE is generated if n is negative.

       GL_INVALID_OPERATION is generated if  glPrioritizeTextures  is  executed  between  the  execution  of
       glBegin and the corresponding execution of glEnd.

ASSOCIATED GETS
       glGetTexParameter with parameter name GL_TEXTURE_PRIORITY retrieves the priority of a currently bound
       texture.

SEE ALSO
       glAreTexturesResident(3G), glBindTexture(3G), glCopyTexImage1D(3G), glCopyTexImage2D(3G), glTexImage1D(3G), glTexImage2D(3G),
       glTexImage3D(3G), glTexParameter(3G)




                                                                                    GLPRIORITIZETEXTURES(3G)