GLPRIORITIZETEXTURES() GLPRIORITIZETEXTURES() 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 prior- ity 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 tex- ture memory. These textures may be bound to a texture target much more ef- ficiently 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; tex- tures 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 be- tween 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, glTexParameter GLPRIORITIZETEXTURES()
NAME | C SPECIFICATION | PARAMETERS | DESCRIPTION | NOTES | ERRORS | ASSOCIATED GETS | SEE ALSO
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