GLDRAWTRANSFORMFEEDB(3G) OpenGL Manual GLDRAWTRANSFORMFEEDB(3G)
glDrawTransformFeedback - render primitives using a count derived from a transform
void glDrawTransformFeedback(GLenum mode, GLuint id);
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.
Specifies the name of a transform feedback object from which to retrieve a primitive
glDrawTransformFeedback draws primitives of a type specified by mode using a count
retrieved from the transform feedback specified by id. Calling glDrawTransformFeedback 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 zero the last time transform
feedback was active on the transform feedback object named by id.
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_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
GL_INVALID_OPERATION is generated if mode is GL_PATCHES and no tessellation control shader
GL_INVALID_OPERATION is generated if glEndTransformFeedback() has never been called while
the transform feedback object named by id was bound.
glDrawArrays(), glDrawArraysInstanced(), glDrawElements(), glDrawRangeElements(),
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.
opengl.org 06/10/2014 GLDRAWTRANSFORMFEEDB(3G)