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GLPRIORITIZETEXTURES(3G)	 OpenGL Manual	      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 specifying a
       priority for each texture, glPrioritizeTextures allows applications to
       guide the GL implementation in determining which textures should be
       resident.

       The priorities given in priorities are clamped to the range 0 1 before
       they are assigned. 0 indicates 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 texture 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(), glBindTexture(), glCopyTexImage1D(),
       glCopyTexImage2D(), glTexImage1D(), glTexImage2D(), glTexImage3D(),
       glTexParameter()

COPYRIGHT
       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
       under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS
       opengl.org

opengl.org			  04/29/2014	      GLPRIORITIZETEXTURES(3G)

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