glgetbufferpointerv(3g) [osx man page]
GLGETBUFFERPOINTERV(3G) OpenGL 3.3 GLGETBUFFERPOINTERV(3G) NAME
glGetBufferPointerv - return the pointer to a mapped buffer object's data store C SPECIFICATION
void glGetBufferPointerv(GLenum target, GLenum pname, GLvoid ** params); PARAMETERS
target Specifies the target buffer object. The symbolic constant must be GL_ARRAY_BUFFER, GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER, GL_TEXTURE_BUFFER, GL_TRANSFORM_FEEDBACK_BUFFER, or GL_UNIFORM_BUFFER. 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. 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. SEE ALSO
glBindBuffer(), glMapBuffer() COPYRIGHT
Copyright (C) 2005 Addison-Wesley. 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 GLGETBUFFERPOINTERV(3G)
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GLGETBUFFERSUBDATA(3G) OpenGL 3.3 GLGETBUFFERSUBDATA(3G) NAME
glGetBufferSubData - returns a subset of a buffer object's data store C SPECIFICATION
void glGetBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, GLvoid * data); PARAMETERS
target Specifies the target buffer object. The symbolic constant must be GL_ARRAY_BUFFER, GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER, GL_TEXTURE_BUFFER, GL_TRANSFORM_FEEDBACK_BUFFER, or GL_UNIFORM_BUFFER. offset Specifies the offset into the buffer object's data store from which data will be returned, measured in bytes. size Specifies the size in bytes of the data store region being returned. data Specifies a pointer to the location where buffer object data is returned. DESCRIPTION
glGetBufferSubData returns some or all of the data from the buffer object currently bound to target. Data starting at byte offset offset and extending for size bytes is copied from the data store to the memory pointed to by data. An error is thrown if the buffer object is currently mapped, or if offset and size together define a range beyond the bounds of the buffer object's data store. NOTES
If an error is generated, no change is made to the contents of data. ERRORS
GL_INVALID_ENUM is generated if target is not GL_ARRAY_BUFFER, GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, or GL_PIXEL_UNPACK_BUFFER. GL_INVALID_VALUE is generated if offset or size is negative, or if together they define a region of memory that extends beyond the buffer object's allocated data store. GL_INVALID_OPERATION is generated if the reserved buffer object name 0 is bound to target. GL_INVALID_OPERATION is generated if the buffer object being queried is mapped. SEE ALSO
glBindBuffer(), glBufferData(), glBufferSubData(), glMapBuffer(), glUnmapBuffer() COPYRIGHT
Copyright (C) 2005 Addison-Wesley. 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 GLGETBUFFERSUBDATA(3G)