glBindImageTextures — bind one or more named texture images to a sequence of consecutive image units
void glBindImageTextures(
|
GLuint first, |
GLsizei count, | |
const GLuint *textures) ; |
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.
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.
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 passed to glBindImageTextures
must have been bound at least once previously
via a call to glBindTexture.
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.
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
.
OpenGL Version | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Function / Feature Name | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
glBindImageTextures
|
- | - | - | - | - | - | - | - | - | - | ✔ | ✔ |
glBindTexture, glBindTextures, glDeleteTextures, glGenTextures, glGet, glGetTexParameter, glIsTexture, glTexStorage1D, glTexStorage2D, glTexStorage2DMultisample, glTexStorage3D, glTexStorage3DMultisample, glTexBuffer, glTexParameter
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. https://opencontent.org/openpub/.