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NAME
glBindBuffer - bind a named buffer object
C SPECIFICATION
void glBindBuffer(GLenum target, GLuint buffer);
PARAMETERS
target
Specifies the target to which the buffer object is bound, which must be one of the
buffer binding targets in the following table:
┌─────────────────────────────┬────────────────────────────────┐
│Buffer Binding Target │ Purpose │
├─────────────────────────────┼────────────────────────────────┤
│GL_ARRAY_BUFFER │ Vertex attributes │
├─────────────────────────────┼────────────────────────────────┤
│GL_ATOMIC_COUNTER_BUFFER │ Atomic counter storage │
├─────────────────────────────┼────────────────────────────────┤
│GL_COPY_READ_BUFFER │ Buffer copy source │
├─────────────────────────────┼────────────────────────────────┤
│GL_COPY_WRITE_BUFFER │ Buffer copy destination │
├─────────────────────────────┼────────────────────────────────┤
│GL_DISPATCH_INDIRECT_BUFFER │ Indirect compute dispatch │
│ │ commands │
├─────────────────────────────┼────────────────────────────────┤
│GL_DRAW_INDIRECT_BUFFER │ Indirect command arguments │
├─────────────────────────────┼────────────────────────────────┤
│GL_ELEMENT_ARRAY_BUFFER │ Vertex array indices │
├─────────────────────────────┼────────────────────────────────┤
│GL_PIXEL_PACK_BUFFER │ Pixel read target │
├─────────────────────────────┼────────────────────────────────┤
│GL_PIXEL_UNPACK_BUFFER │ Texture data source │
├─────────────────────────────┼────────────────────────────────┤
│GL_QUERY_BUFFER │ Query result buffer │
├─────────────────────────────┼────────────────────────────────┤
│GL_SHADER_STORAGE_BUFFER │ Read-write storage for shaders │
├─────────────────────────────┼────────────────────────────────┤
│GL_TEXTURE_BUFFER │ Texture data buffer │
├─────────────────────────────┼────────────────────────────────┤
│GL_TRANSFORM_FEEDBACK_BUFFER │ Transform feedback buffer │
├─────────────────────────────┼────────────────────────────────┤
│GL_UNIFORM_BUFFER │ Uniform block storage │
└─────────────────────────────┴────────────────────────────────┘
buffer
Specifies the name of a buffer object.
DESCRIPTION
glBindBuffer binds a buffer object to the specified buffer binding point. Calling
glBindBuffer with target set to one of the accepted symbolic constants and buffer set to
the name of a buffer object binds that buffer object name to the target. If no buffer
object with name buffer exists, one is created with that name. When a buffer object is
bound to a target, the previous binding for that target is automatically broken.
Buffer object names are unsigned integers. The value zero is reserved, but there is no
default buffer object for each buffer object target. Instead, buffer set to zero
effectively unbinds any buffer object previously bound, and restores client memory usage
for that buffer object target (if supported for that target). Buffer object names and the
corresponding buffer object contents are local to the shared object space of the current
GL rendering context; two rendering contexts share buffer object names only if they
explicitly enable sharing between contexts through the appropriate GL windows interfaces
functions.
glGenBuffers() must be used to generate a set of unused buffer object names.
The state of a buffer object immediately after it is first bound is an unmapped zero-sized
memory buffer with GL_READ_WRITE access and GL_STATIC_DRAW usage.
While a non-zero buffer object name is bound, GL operations on the target to which it is
bound affect the bound buffer object, and queries of the target to which it is bound
return state from the bound buffer object. While buffer object name zero is bound, as in
the initial state, attempts to modify or query state on the target to which it is bound
generates an GL_INVALID_OPERATION error.
When a non-zero buffer object is bound to the GL_ARRAY_BUFFER target, the vertex array
pointer parameter is interpreted as an offset within the buffer object measured in basic
machine units.
When a non-zero buffer object is bound to the GL_DRAW_INDIRECT_BUFFER target, parameters
for draws issued through glDrawArraysIndirect() and glDrawElementsIndirect() are sourced
from the specified offset in that buffer object's data store.
When a non-zero buffer object is bound to the GL_DISPATCH_INDIRECT_BUFFER target, the
parameters for compute dispatches issued through glDispatchComputeIndirect() are sourced
from the specified offset in that buffer object's data store.
While a non-zero buffer object is bound to the GL_ELEMENT_ARRAY_BUFFER target, the indices
parameter of glDrawElements(), glDrawElementsInstanced(), glDrawElementsBaseVertex(),
glDrawRangeElements(), glDrawRangeElementsBaseVertex(), glMultiDrawElements(), or
glMultiDrawElementsBaseVertex() is interpreted as an offset within the buffer object
measured in basic machine units.
While a non-zero buffer object is bound to the GL_PIXEL_PACK_BUFFER target, the following
commands are affected: glGetCompressedTexImage(), glGetTexImage(), and glReadPixels(). The
pointer parameter is interpreted as an offset within the buffer object measured in basic
machine units.
While a non-zero buffer object is bound to the GL_PIXEL_UNPACK_BUFFER target, the
following commands are affected: glCompressedTexImage1D(), glCompressedTexImage2D(),
glCompressedTexImage3D(), glCompressedTexSubImage1D(), glCompressedTexSubImage2D(),
glCompressedTexSubImage3D(), glTexImage1D(), glTexImage2D(), glTexImage3D(),
glTexSubImage1D(), glTexSubImage2D(), and glTexSubImage3D(). The pointer parameter is
interpreted as an offset within the buffer object measured in basic machine units.
The buffer targets GL_COPY_READ_BUFFER and GL_COPY_WRITE_BUFFER are provided to allow
glCopyBufferSubData() to be used without disturbing the state of other bindings. However,
glCopyBufferSubData() may be used with any pair of buffer binding points.
The GL_TRANSFORM_FEEDBACK_BUFFER buffer binding point may be passed to glBindBuffer, but
will not directly affect transform feedback state. Instead, the indexed
GL_TRANSFORM_FEEDBACK_BUFFER bindings must be used through a call to glBindBufferBase() or
glBindBufferRange(). This will affect the generic GL_TRANSFORM_FEEDBACK_BUFFER binding.
Likewise, the GL_UNIFORM_BUFFER, GL_ATOMIC_COUNTER_BUFFER and GL_SHADER_STORAGE_BUFFER
buffer binding points may be used, but do not directly affect uniform buffer, atomic
counter buffer or shader storage buffer state, respectively. glBindBufferBase() or
glBindBufferRange() must be used to bind a buffer to an indexed uniform buffer, atomic
counter buffer or shader storage buffer binding point.
The GL_QUERY_BUFFER binding point is used to specify a buffer object that is to receive
the results of query objects through calls to the glGetQueryObject() family of commands.
A buffer object binding created with glBindBuffer remains active until a different buffer
object name is bound to the same target, or until the bound buffer object is deleted with
glDeleteBuffers().
Once created, a named buffer object may be re-bound to any target as often as needed.
However, the GL implementation may make choices about how to optimize the storage of a
buffer object based on its initial binding target.
NOTES
The GL_COPY_READ_BUFFER, GL_UNIFORM_BUFFER and GL_TEXTURE_BUFFER targets are available
only if the GL version is 3.1 or greater.
The GL_ATOMIC_COUNTER_BUFFER target is available only if the GL version is 4.2 or greater.
The GL_DISPATCH_INDIRECT_BUFFER and GL_SHADER_STORAGE_BUFFER targets are available only if
the GL version is 4.3 or greater.
The GL_QUERY_BUFFER target is available only if the GL version is 4.4 or greater.
ERRORS
GL_INVALID_ENUM is generated if target is not one of the allowable values.
GL_INVALID_VALUE is generated if buffer is not a name previously returned from a call to
glGenBuffers().
ASSOCIATED GETS
glGet() with argument GL_ARRAY_BUFFER_BINDING
glGet() with argument GL_ATOMIC_COUNTER_BUFFER_BINDING
glGet() with argument GL_COPY_READ_BUFFER_BINDING
glGet() with argument GL_COPY_WRITE_BUFFER_BINDING
glGet() with argument GL_DRAW_INDIRECT_BUFFER_BINDING
glGet() with argument GL_DISPATCH_INDIRECT_BUFFER_BINDING
glGet() with argument GL_ELEMENT_ARRAY_BUFFER_BINDING
glGet() with argument GL_PIXEL_PACK_BUFFER_BINDING
glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDING
glGet() with argument GL_SHADER_STORAGE_BUFFER_BINDING
glGet() with argument GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
glGet() with argument GL_UNIFORM_BUFFER_BINDING
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 │ │ │ │ │ │ │ │ │ │ │ │ │
├─────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
│glBindBuffer │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
└─────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘
SEE ALSO
glGenBuffers(), glBindBufferBase(), glBindBufferRange(), glMapBuffer(), glUnmapBuffer(),
glDeleteBuffers(), glGet(), glIsBuffer()
COPYRIGHT
Copyright © 2005 Addison-Wesley. Copyright © 2010-2014 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 © 2005 Sams Publishing
Copyright © 2010-2014 Khronos Group
[FIXME: source] 07/22/2015 GLBINDBUFFER(3G)