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GLFRAMEBUFFERTEXTURE(3G)                         OpenGL 3.3                         GLFRAMEBUFFERTEXTURE(3G)



NAME
       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_ATTACHMMENT.

       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_ATTACHMMENT.  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 (C) 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/.



OpenGL 3.3                                       03/08/2011                         GLFRAMEBUFFERTEXTURE(3G)