2010-2013
Khronos Group
glFramebufferTexture
3G

# glFramebufferTexture

attach a level of a texture object as a logical buffer to the currently bound framebuffer object

## C Specification

                    void glFramebufferTexture
                    GLenum target
                    GLenum attachment
                    GLuint texture
                    GLint level

                    void glFramebufferTexture1D
                    GLenum target
                    GLenum attachment
                    GLenum textarget
                    GLuint texture
                    GLint level

                    void glFramebufferTexture2D
                    GLenum target
                    GLenum attachment
                    GLenum textarget
                    GLuint texture
                    GLint level

                    void glFramebufferTexture3D
                    GLenum target
                    GLenum attachment
                    GLenum textarget
                    GLuint texture
                    GLint level
                    GLint layer

## Parameters

`target`

  Specifies the framebuffer target. `target` must be `GL_DRAW_FRAMEBUFFER`, `GL_READ_FRAMEBUFFER`, or `GL_FRAMEBUFFER`. `GL_FRAMEBUFFER` is equivalent to `GL_DRAW_FRAMEBUFFER`.

`attachment`

  Specifies the attachment point of the framebuffer. `attachment` must be `GL_COLOR_ATTACHMENT` i, `GL_DEPTH_ATTACHMENT`, `GL_STENCIL_ATTACHMENT` or `GL_DEPTH_STENCIL_ATTACHMENT`.

`textarget`

  For `glFramebufferTexture1D`, `glFramebufferTexture2D` and `glFramebufferTexture3D`, specifies what type of texture is expected in the `texture` parameter, or for cube map textures, which face is to be attached.

`texture`

  Specifies the texture object to attach to the framebuffer attachment point named by `attachment`.

`level`

  Specifies the mipmap level of `texture` to attach.

## Description

`glFramebufferTexture`, `glFramebufferTexture1D`, `glFramebufferTexture2D`, and `glFramebufferTexture` attach a selected mipmap level or image of a texture object as one of the logical buffers of the framebuffer object currently bound to `target`. `target` must be `GL_DRAW_FRAMEBUFFER`, `GL_READ_FRAMEBUFFER`, or `GL_FRAMEBUFFER`. `GL_FRAMEBUFFER` is equivalent to `GL_DRAW_FRAMEBUFFER`.

`attachment` specifies the logical attachment of the framebuffer and must be `GL_COLOR_ATTACHMENT` i, `GL_DEPTH_ATTACHMENT`, `GL_STENCIL_ATTACHMENT` or `GL_DEPTH_STENCIL_ATTACHMENT`. i in `GL_COLOR_ATTACHMENT` i may range from zero to the value of `GL_MAX_COLOR_ATTACHMENTS` minus one. Attaching a level of a texture to `GL_DEPTH_STENCIL_ATTACHMENT` is equivalent to attaching that level to both the `GL_DEPTH_ATTACHMENT` and the `GL_STENCIL_ATTACHMENT` attachment points simultaneously.

`textarget` specifies what type of texture is named by `texture`, and for cube map textures, specifies the face that is to be attached. If `texture` is not zero, it must be the name of an existing texture with type `textarget`, unless it is a cube map texture, in which case `textarget` must be `GL_TEXTURE_CUBE_MAP_POSITIVE_X` `GL_TEXTURE_CUBE_MAP_NEGATIVE_X`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Y`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_Y`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Z`, or `GL_TEXTURE_CUBE_MAP_NEGATIVE_Z`.

If `texture` is non-zero, the specified `level` of the texture object named `texture` is attached to the framebfufer attachment point named by `attachment`. For `glFramebufferTexture1D`, `glFramebufferTexture2D`, and `glFramebufferTexture3D`, `texture` must be zero or the name of an existing texture with a target of `textarget`, or `texture` must be the name of an existing cube-map texture and `textarget` must be one of `GL_TEXTURE_CUBE_MAP_POSITIVE_X`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Y`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Z`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_X`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_Y`, or `GL_TEXTURE_CUBE_MAP_NEGATIVE_Z`.

If `textarget` is `GL_TEXTURE_RECTANGLE`, `GL_TEXTURE_2D_MULTISAMPLE`, or `GL_TEXTURE_2D_MULTISAMPLE_ARRAY`, then `level` must be zero. If `textarget` is `GL_TEXTURE_3D`, then level must be greater than or equal to zero and less than or equal to log2 of the value of `GL_MAX_3D_TEXTURE_SIZE`. If `textarget` is one of `GL_TEXTURE_CUBE_MAP_POSITIVE_X`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Y`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Z`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_X`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_Y`, or `GL_TEXTURE_CUBE_MAP_NEGATIVE_Z`, then `level` must be greater than or equal to zero and less than or equal to log2 of the value of `GL_MAX_CUBE_MAP_TEXTURE_SIZE`. For all other values of `textarget`, `level` must be greater than or equal to zero and no larger than log2 of the value of `GL_MAX_TEXTURE_SIZE`.

`layer` specifies the layer of a 2-dimensional image within a 3-dimensional texture.

For `glFramebufferTexture1D`, if `texture` is not zero, then `textarget` must be `GL_TEXTURE_1D`. For `glFramebufferTexture2D`, if `texture` is not zero, `textarget` must be one of `GL_TEXTURE_2D`, `GL_TEXTURE_RECTANGLE`, `GL_TEXTURE_CUBE_MAP_POSITIVE_X`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Y`, `GL_TEXTURE_CUBE_MAP_POSITIVE_Z`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_X`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_Y`, `GL_TEXTURE_CUBE_MAP_NEGATIVE_Z`, or `GL_TEXTURE_2D_MULTISAMPLE`. For `glFramebufferTexture3D`, if `texture` is not zero, then `textarget` must be `GL_TEXTURE_3D`.

## Notes

`glFramebufferTexture` is available only if the GL version is 3.2 or greater.

## Errors

`GL_INVALID_ENUM` is generated if `target` is not one of the accepted tokens.

`GL_INVALID_ENUM` is generated if `renderbuffertarget` is not `GL_RENDERBUFFER`.

`GL_INVALID_OPERATION` is generated if zero is bound to `target`.

`GL_INVALID_OPERATION` is generated if `textarget` and `texture` are not compatible.

## See Also

glGenFramebuffers, glBindFramebuffer, glGenRenderbuffers, glFramebufferTexture, glFramebufferTexture1D, glFramebufferTexture2D, glFramebufferTexture3D

## Copyright

Copyright 2010-2013 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/.