2010 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_ATTACHMENTi`, `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_ATTACHMENTi`, `GL_DEPTH_ATTACHMENT`, `GL_STENCIL_ATTACHMENT` or `GL_DEPTH_STENCIL_ATTACHMENT`. i in `GL_COLOR_ATTACHMENTi` may range from zero to the value of `GL_MAX_COLOR_ATTACHMENTS` - 1. 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 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/.