glTexStorage3D man page on RedHat

Man page or keyword search:  
man Server   29550 pages
apropos Keyword Search (all sections)
Output format
RedHat logo
[printable version]

GLTEXSTORAGE3D(3G)		 OpenGL Manual		    GLTEXSTORAGE3D(3G)

NAME
       glTexStorage3D - simultaneously specify storage for all levels of a
       three-dimensional, two-dimensional array or cube-map array texture

C SPECIFICATION
       void glTexStorage3D(GLenum target, GLsizei levels,
			   GLenum internalformat, GLsizei width,
			   GLsizei height, GLsizei depth);

PARAMETERS
       target
	   Specify the target of the operation.	 target must be one of
	   GL_TEXTURE_3D, GL_PROXY_TEXTURE_3D, GL_TEXTURE_2D_ARRAY,
	   GL_PROXY_TEXTURE_2D_ARRAY, GL_TEXTURE_CUBE_ARRAY, or
	   GL_PROXY_TEXTURE_CUBE_ARRAY.

       levels
	   Specify the number of texture levels.

       internalformat
	   Specifies the sized internal format to be used to store texture
	   image data.

       width
	   Specifies the width of the texture, in texels.

       height
	   Specifies the height of the texture, in texels.

       depth
	   Specifies the depth of the texture, in texels.

DESCRIPTION
       glTexStorage3D specifies the storage requirements for all levels of a
       three-dimensional, two-dimensional array or cube-map array texture
       simultaneously. Once a texture is specified with this command, the
       format and dimensions of all levels become immutable unless it is a
       proxy texture. The contents of the image may still be modified,
       however, its storage requirements may not change. Such a texture is
       referred to as an immutable-format texture.

       The behavior of glTexStorage3D depends on the target parameter. When
       target is GL_TEXTURE_3D, or GL_PROXY_TEXTURE_3D, calling glTexStorage3D
       is equivalent, assuming no errors are generated, to executing the
       following pseudo-code:

	       for (i = 0; i < levels; i++)
	       {
		   glTexImage3D(target, i, internalformat, width, height, depth, 0, format, type, NULL);
		   width = max(1, (width / 2));
		   height = max(1, (height / 2));
		   depth = max(1, (depth / 2));
	       }

       When target is GL_TEXTURE_2D_ARRAY, GL_PROXY_TEXTURE_2D_ARRAY,
       GL_TEXTURE_CUBE_MAP_ARRAY, or GL_PROXY_TEXTURE_CUBE_MAP_ARRAY,
       glTexStorage3D is equivalent to:

	       for (i = 0; i < levels; i++)
	       {
		   glTexImage3D(target, i, internalformat, width, height, depth, 0, format, type, NULL);
		   width = max(1, (width / 2));
		   height = max(1, (height / 2));
	       }

       Since no texture data is actually provided, the values used in the
       pseudo-code for format and type are irrelevant and may be considered to
       be any values that are legal for the chosen internalformat enumerant.
       internalformat must be one of the sized internal formats given in Table
       1 below, one of the sized depth-component formats
       GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT24, or GL_DEPTH_COMPONENT16,
       or one of the combined depth-stencil formats, GL_DEPTH32F_STENCIL8, or
       GL_DEPTH24_STENCIL8. Upon success, the value of
       GL_TEXTURE_IMMUTABLE_FORMAT becomes GL_TRUE. The value of
       GL_TEXTURE_IMMUTABLE_FORMAT may be discovered by calling
       glGetTexParameter() with pname set to GL_TEXTURE_IMMUTABLE_FORMAT. No
       further changes to the dimensions or format of the texture object may
       be made. Using any command that might alter the dimensions or format of
       the texture object (such as glTexImage3D() or another call to
       glTexStorage3D) will result in the generation of a GL_INVALID_OPERATION
       error, even if it would not, in fact, alter the dimensions or format of
       the object.

       <xi:include></xi:include>

ERRORS
       GL_INVALID_ENUM is generated if internalformat is not a valid sized
       internal format.

       GL_INVALID_ENUM is generated if target is not one of the accepted
       target enumerants.

       GL_INVALID_VALUE is generated if width or levels are less than 1.

       GL_INVALID_OPERATION is generated if target is GL_TEXTURE_3D or
       GL_PROXY_TEXTURE_3D and levels is greater than log 2 max width ,
       height ,	  depth + 1.

       GL_INVALID_OPERATION is generated if target is GL_TEXTURE_2D_ARRAY,
       GL_PROXY_TEXTURE_2D_ARRAY, GL_TEXURE_CUBE_ARRAY, or
       GL_PROXY_TEXTURE_CUBE_MAP_ARRAY and levels is greater than log 2 max
       width ,	 height + 1.

SEE ALSO
       glTexImage3D(), glTexStorage1D(), glTexStorage2D().

COPYRIGHT
       Copyright © 2011 Khronos Group. This material may be distributed
       subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS
       opengl.org

opengl.org			  03/16/2013		    GLTEXSTORAGE3D(3G)
[top]

List of man pages available for RedHat

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net