glDrawElements man page on DigitalUNIX

Man page or keyword search:  
man Server   12896 pages
apropos Keyword Search (all sections)
Output format
DigitalUNIX logo
[printable version]

glDrawElements(3G)					    glDrawElements(3G)

NAME
       glDrawElements - render primitives from array data

SYNOPSIS
       void glDrawElements(
	       GLenum mode,
	       GLsizei count,
	       GLenum type,
	       const GLvoid *indices );

PARAMETERS
       Specifies  what	kind  of  primitives  to  render.  Symbolic  constants
       GL_POINTS, GL_LINE_STRIP,  GL_LINE_LOOP,	 GL_LINES,  GL_TRIANGLE_STRIP,
       GL_TRIANGLE_FAN,	 GL_TRIANGLES, GL_QUAD_STRIP, GL_QUADS, and GL_POLYGON
       are accepted.  Specifies the number of elements to be rendered.	Speci‐
       fies   the   type   of	the   values   in  indices.  Must  be  one  of
       GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, or GL_UNSIGNED_INT.	  Specifies  a
       pointer to the location where the indices are stored.

DESCRIPTION
       glDrawElements()	 specifies multiple geometric primitives with very few
       subroutine calls. Instead of calling a GL function to pass  each	 indi‐
       vidual  vertex,	normal, texture coordinate, edge option, or color, you
       can prespecify separate arrays of vertexes, normals, and so on and  use
       them  to	 construct  a  sequence	 of  primitives	 with a single call to
       glDrawElements().

       When glDrawElements() is called, it uses count sequential elements from
       an  enabled  array, starting at indices to construct a sequence of geo‐
       metric primitives.  mode specifies what kind  of	 primitives  are  con‐
       structed,  and  how  the	 array elements construct these primitives. If
       more than one array is enabled, each is used. If GL_VERTEX_ARRAY is not
       enabled, no geometric primitives are constructed.

       Vertex attributes that are modified by glDrawElements() have an unspec‐
       ified  value  after  glDrawElements()   returns.	   For	 example,   if
       GL_COLOR_ARRAY  is enabled, the value of the current color is undefined
       after glDrawElements() executes.	 Attributes that aren't modified main‐
       tain their previous values.

NOTES
       glDrawElements() is available only if the GL version is 1.1 or greater.

       glDrawElements()	 is  included in display lists. If glDrawElements() is
       entered into a display list, the necessary array	 data  (determined  by
       the  array pointers and enables) is also entered into the display list.
       Because the array pointers and enables  are  client-side	 state,	 their
       values  affect  display	lists when the lists are created, not when the
       lists are executed.

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

       GL_INVALID_VALUE is generated if count is negative.

       GL_INVALID_OPERATION  is	 generated  if	glDrawElements()  is  executed
       between the execution of glBegin() and the corresponding glEnd().

SEE ALSO
       glArrayElement(3),  glColorPointer(3), glDrawArrays(3), glDrawRangeEle‐
       ments(3),  glEdgeFlagPointer(3),	 glGetPointerv(3),  glIndexPointer(3),
       glInterleavedArrays(3),	  glNormalPointer(3),	 glTexCoordPointer(3),
       glVertexPointer

							    glDrawElements(3G)
[top]

List of man pages available for DigitalUNIX

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net