Glprioritizetextures - HP b2600 Reference Manual

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glPrioritizeTextures

glPrioritizeTextures
glPrioritizeTextures: set texture residence priority.
C Specification
void glPrioritizeTextures(
Parameters
n
textures
priorities
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.
346
GLsizei n,
const GLuint *textures,
const GLclampf *priorities)
Specifies the number of textures to be prioritized.
Specifies an array containing the names of the textures to be
prioritized.
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.
Chapter 14