1GLPRIORITIZETEXTURES(3G)         OpenGL Manual        GLPRIORITIZETEXTURES(3G)
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NAME

6       glPrioritizeTextures - set texture residence priority
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C SPECIFICATION

9       void glPrioritizeTextures(GLsizei n, const GLuint * textures,
10                                 const GLclampf * priorities);
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PARAMETERS

13       n
14           Specifies the number of textures to be prioritized.
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16       textures
17           Specifies an array containing the names of the textures to be
18           prioritized.
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20       priorities
21           Specifies an array containing the texture priorities. A priority
22           given in an element of priorities applies to the texture named by
23           the corresponding element of textures.
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DESCRIPTION

26       glPrioritizeTextures assigns the n texture priorities given in
27       priorities to the n textures named in textures.
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29       The GL establishes a ``working set'' of textures that are resident in
30       texture memory. These textures may be bound to a texture target much
31       more efficiently than textures that are not resident. By specifying a
32       priority for each texture, glPrioritizeTextures allows applications to
33       guide the GL implementation in determining which textures should be
34       resident.
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36       The priorities given in priorities are clamped to the range 0 1 before
37       they are assigned. 0 indicates the lowest priority; textures with
38       priority 0 are least likely to be resident. 1 indicates the highest
39       priority; textures with priority 1 are most likely to be resident.
40       However, textures are not guaranteed to be resident until they are
41       used.
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43       glPrioritizeTextures silently ignores attempts to prioritize texture 0
44       or any texture name that does not correspond to an existing texture.
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46       glPrioritizeTextures does not require that any of the textures named by
47       textures be bound to a texture target.  glTexParameter() may also be
48       used to set a texture's priority, but only if the texture is currently
49       bound. This is the only way to set the priority of a default texture.
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NOTES

52       glPrioritizeTextures is available only if the GL version is 1.1 or
53       greater.
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ERRORS

56       GL_INVALID_VALUE is generated if n is negative.
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58       GL_INVALID_OPERATION is generated if glPrioritizeTextures is executed
59       between the execution of glBegin() and the corresponding execution of
60       glEnd().
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ASSOCIATED GETS

63       glGetTexParameter() with parameter name GL_TEXTURE_PRIORITY retrieves
64       the priority of a currently bound texture.
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SEE ALSO

67       glAreTexturesResident(), glBindTexture(), glCopyTexImage1D(),
68       glCopyTexImage2D(), glTexImage1D(), glTexImage2D(), glTexImage3D(),
69       glTexParameter()
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72       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
73       under the SGI Free Software B License. For details, see
74       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

77       opengl.org
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81opengl.org                        06/10/2014          GLPRIORITIZETEXTURES(3G)
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