bionic (3) glBindImageTextures.3G.gz

NAME

       glBindImageTextures - bind one or more named texture images to a sequence of consecutive image units

C SPECIFICATION

       void glBindImageTextures(GLuint first, GLsizei count, const GLuint *textures);

PARAMETERS

       first
           Specifies the first image unit to which a texture is to be bound.

       count
           Specifies the number of textures to bind.

       textures
           Specifies the address of an array of names of existing texture objects.

DESCRIPTION

       glBindImageTextures binds images from an array of existing texture objects to a specified number of
       consecutive image units.  count specifies the number of texture objects whose names are stored in the
       array textures. That number of texture names are read from the array and bound to the count consecutive
       texture units starting from first. If the name zero appears in the textures array, any existing binding
       to the image unit is reset. Any non-zero entry in textures must be the name of an existing texture
       object. When a non-zero entry in textures is present, the image at level zero is bound, the binding is
       considered layered, with the first layer set to zero, and the image is bound for read-write access. The
       image unit format parameter is taken from the internal format of the image at level zero of the texture
       object. For cube map textures, the internal format of the positive X image of level zero is used. If
       textures is NULL then it is as if an appropriately sized array containing only zeros had been specified.

       glBindImageTextures is equivalent to the following pseudo code:

               for (i = 0; i < count; i++) {
                   if (textures == NULL || textures[i] = 0) {
                       glBindImageTexture(first + i, 0, 0, GL_FALSE, 0, GL_READ_ONLY, GL_R8);
                   } else {
                       glBindImageTexture(first + i, textures[i], 0, GL_TRUE, 0, GL_READ_WRITE, lookupInternalFormat(textures[i]));
                   }
               }

       Each entry in textures will be checked individually and if found to be invalid, the state for that image
       unit will not be changed and an error will be generated. However, the state for other texture image units
       referenced by the command will still be updated.

NOTES

       glBindImageTextures is available only if the GL version is 4.4 or higher.

       Note that because glBindImageTextures cannot create new textures (even if a name passed has been
       previously generated by call to glGenTextures()), names pased to glBindTextures must have been bound at
       least once previously via a call to glBindTexture().

ERRORS

       GL_INVALID_OPERATION is generated if first + count is greater than the number of image units supported by
       the implementation.

       GL_INVALID_OPERATION is generated if any value in textures is not zero or the name of an existing texture
       object.

       GL_INVALID_OPERATION error is generated if the internal format of the level zero texture image of any
       texture in textures is not supported.

       GL_INVALID_OPERATION error is generated if the width, height, or depth of the level zero texture image of
       any texture in textures is zero.

ASSOCIATED GETS

       glGet() with argument GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D,
       GL_TEXTURE_BINDING_1D_ARRAY, GL_TEXTURE_BINDING_2D_ARRAY, GL_TEXTURE_BINDING_RECTANGLE,
       GL_TEXTURE_BINDING_BUFFER, GL_TEXTURE_BINDING_CUBE_MAP, GL_TEXTURE_BINDING_CUBE_MAP,
       GL_TEXTURE_BINDING_CUBE_MAP_ARRAY, GL_TEXTURE_BINDING_2D_MULTISAMPLE, or
       GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY.

VERSION SUPPORT

       ┌────────────────────┬───────────────────────────────────────────────────────────────────────┐
       │                    │                OpenGL Version                                         │
       ├────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │Function            │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
       │/                   │     │     │     │     │     │     │     │     │     │     │     │     │
       │Feature             │     │     │     │     │     │     │     │     │     │     │     │     │
       │Name                │     │     │     │     │     │     │     │     │     │     │     │     │
       ├────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glBindImageTextures │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  ✔  │  ✔  │
       └────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘

SEE ALSO

       glBindTexture(), glBindTextures(), glDeleteTextures(), glGenTextures(), glGet(), glGetTexParameter(),
       glIsTexture(), glTexStorage1D(), glTexStorage2D(), glTexStorage2DMultisample(), glTexStorage3D(),
       glTexStorage3DMultisample(), glTexBuffer(), glTexParameter()

COPYRIGHT

       Copyright © 2013-2014 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/.

COPYRIGHT

       Copyright © 2013-2014 Khronos Group

[FIXME: source]                                    01/03/2018                            GLBINDIMAGETEXTURES(3G)