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GLDRAWTRANSFORMFEEDB(3G)	 OpenGL Manual	      GLDRAWTRANSFORMFEEDB(3G)

NAME
       glDrawTransformFeedbackStream - render primitives using a count derived
       from a specifed stream of a transform feedback object

C SPECIFICATION
       void glDrawTransformFeedbackStream(GLenum mode, GLuint id,
					  GLuint stream);

PARAMETERS
       mode
	   Specifies what kind of primitives to render. Symbolic constants
	   GL_POINTS, GL_LINE_STRIP, GL_LINE_LOOP, GL_LINES,
	   GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP,
	   GL_TRIANGLE_FAN, GL_TRIANGLES, GL_TRIANGLE_STRIP_ADJACENCY,
	   GL_TRIANGLES_ADJACENCY, and GL_PATCHES are accepted.

       id
	   Specifies the name of a transform feedback object from which to
	   retrieve a primitive count.

       stream
	   Specifies the index of the transform feedback stream from which to
	   retrieve a primitive count.

DESCRIPTION
       glDrawTransformFeedbackStream draws primitives of a type specified by
       mode using a count retrieved from the transform feedback stream
       specified by stream of the transform feedback object specified by id.
       Calling glDrawTransformFeedbackStream is equivalent to calling
       glDrawArrays() with mode as specified, first set to zero, and count set
       to the number of vertices captured on vertex stream stream the last
       time transform feedback was active on the transform feedback object
       named by id.

       Calling glDrawTransformFeedback() is equivalent to calling
       glDrawTransformFeedbackStream with stream set to zero.

ERRORS
       GL_INVALID_ENUM is generated if mode is not an accepted value.

       GL_INVALID_VALUE is generated if id is not the name of a transform
       feedback object.

       GL_INVALID_VALUE is generated if stream is greater than or equal to the
       value of GL_MAX_VERTEX_STREAMS.

       GL_INVALID_OPERATION is generated if a non-zero buffer object name is
       bound to an enabled array and the buffer object's data store is
       currently mapped.

       GL_INVALID_OPERATION is generated if a geometry shader is active and
       mode is incompatible with the input primitive type of the geometry
       shader in the currently installed program object.

       GL_INVALID_OPERATION is generated if mode is GL_PATCHES and no
       tessellation control shader is active.

       GL_INVALID_OPERATION is generated if glEndTransformFeedback() has never
       been called while the transform feedback object named by id was bound.

SEE ALSO
       glDrawArrays(), glDrawArraysInstanced(), glDrawElements(),
       glDrawRangeElements(), glDrawTransformFeedback()

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/.

AUTHORS
       opengl.org

opengl.org			  03/16/2013	      GLDRAWTRANSFORMFEEDB(3G)

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