void glPrioritizeTextures(GLsizei n, const GLuint *textures, const GLclampf *priorities)
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. |
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
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.
GL_INVALID_OPERATION is generated if glPrioritizeTextures is executed between the execution of glBegin and the corresponding execution of glEnd.