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docs.GL

glGetBufferPointerv

Name

glGetBufferPointerv — return the pointer to a mapped buffer object's data store

C Specification

void glGetBufferPointerv( GLenum target,
  GLenum pname,
  void ** params);
 

Parameters

target

Specifies the target to which the buffer object is bound for glGetBufferPointerv, 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_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
pname

Specifies the pointer to be returned. The symbolic constant must be GL_BUFFER_MAP_POINTER.

params

Returns the pointer value specified by pname.

Description

glGetBufferPointerv returns pointer information. pname is a symbolic constant indicating the pointer to be returned, which must be GL_BUFFER_MAP_POINTER, the pointer to which the buffer object's data store is mapped. If the data store is not currently mapped, NULL is returned. params is a pointer to a location in which to place the returned pointer value.

Notes

If an error is generated, no change is made to the contents of params.

The initial value for the pointer is NULL.

The GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, GL_PIXEL_PACK_BUFFER,GL_PIXEL_UNPACK_READ_BUFFER, GL_TRANSFORM_FEEDBACK_BUFFER and GL_UNIFORM_BUFFER targets are available only if the GL ES version is 3.0 or greater.

The GL_ATOMIC_COUNTER_BUFFER, GL_DISPATCH_INDIRECT_BUFFER, GL_DRAW_INDIRECT_BUFFER and GL_SHADER_STORAGE_BUFFER targets are available only if the GL ES version is 3.1 or greater.

The GL_TEXTURE_BUFFER target is available only if the GL ES version is 3.2 or greater.

Errors

GL_INVALID_ENUM is generated if target or pname is not an accepted value.

GL_INVALID_OPERATION is generated if the reserved buffer object name 0 is bound to target.

API Version Support

OpenGL ES API Version
Function Name 2.0 3.0 3.1 3.2
glGetBufferPointerv - ✔ ✔ ✔
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