glmultidrawelements(3g) [centos man page]

GLMULTIDRAWELEMENTS(3G) 					   OpenGL Manual					   GLMULTIDRAWELEMENTS(3G)

NAME

       glMultiDrawElements - render multiple sets of primitives by specifying indices of array data elements

C SPECIFICATION

       void glMultiDrawElements(GLenum mode, const GLsizei * count, GLenum type, const GLvoid ** indices, GLsizei primcount);

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.

       count
	   Points to an array of the elements counts.

       type
	   Specifies the type of the values in indices. Must be one of GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, or GL_UNSIGNED_INT.

       indices
	   Specifies a pointer to the location where the indices are stored.

       primcount
	   Specifies the size of the count array.

DESCRIPTION

       glMultiDrawElements specifies multiple sets of geometric primitives with very few subroutine calls. Instead of calling a GL function to
       pass each individual vertex, normal, texture coordinate, edge flag, or color, you can prespecify separate arrays of vertices, normals, and
       so on, and use them to construct a sequence of primitives with a single call to glMultiDrawElements.

       glMultiDrawElements is identical in operation to glDrawElements() except that primcount separate lists of elements are specified.

       Vertex attributes that are modified by glMultiDrawElements have an unspecified value after glMultiDrawElements returns. Attributes that
       aren't modified maintain their previous values.

NOTES

       GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP_ADJACENCY and GL_TRIANGLES_ADJACENCY are available only if the GL version is
       3.2 or greater.

ERRORS

       GL_INVALID_ENUM is generated if mode is not an accepted value.

       GL_INVALID_VALUE is generated if primcount is negative.

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

SEE ALSO

       glDrawArrays(), glDrawRangeElements()

COPYRIGHT

       Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014						   GLMULTIDRAWELEMENTS(3G)

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GLMULTIDRAWELEMENTSB(3G)					    OpenGL 3.3						  GLMULTIDRAWELEMENTSB(3G)

NAME

       glMultiDrawElementsBaseVertex - render multiple sets of primitives by specifying indices of array data elements and an index to apply to
       each index

C SPECIFICATION

       void glMultiDrawElementsBaseVertex(GLenum mode, const GLsizei *count, GLenum type, const GLvoid **indices, GLsizei primcount,
					  GLint *basevertex);

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 and
	   GL_TRIANGLES_ADJACENCY are accepted.

       count
	   Points to an array of the elements counts.

       type
	   Specifies the type of the values in indices. Must be one of GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, or GL_UNSIGNED_INT.

       indices
	   Specifies a pointer to the location where the indices are stored.

       primcount
	   Specifies the size of the count array.

       basevertex
	   Specifies a pointer to the location where the base vertices are stored.

DESCRIPTION

       glMultiDrawElementsBaseVertex behaves identically to glDrawElementsBaseVertex(), except that primcount separate lists of elements are
       specifried instead.

       It has the same effect as:

	       for (int i = 0; i < primcount; i++)
		   if (count[i] > 0)
		       glDrawElementsBaseVertex(mode,
						count[i],
						type,
						indices[i],
						basevertex[i]);

NOTES

       glMultiDrawElementsBaseVertex is available only if the GL version is 3.1 or greater.

       GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP_ADJACENCY and GL_TRIANGLES_ADJACENCY are available only if the GL version is
       3.2 or greater.

ERRORS

       GL_INVALID_ENUM is generated if mode is not an accepted value.

       GL_INVALID_VALUE is generated if primcount is negative.

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

SEE ALSO

       glMultiDrawElements(), glDrawElementsBaseVertex(), glDrawArrays(), glVertexAttribPointer()

COPYRIGHT

       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.  http://opencontent.org/openpub/.

OpenGL 3.3							    03/08/2011						  GLMULTIDRAWELEMENTSB(3G)

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glmultidrawelements(3g) [centos man page]

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