NAME

       glDrawArrays - render primitives from array data

C SPECIFICATION

       void glDrawArrays(GLenum mode, GLint first, GLsizei count);

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.

       first
           Specifies the starting index in the enabled arrays.

       count
           Specifies the number of indices to be rendered.

DESCRIPTION

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

       When glDrawArrays is called, it uses count sequential elements from each enabled array to
       construct a sequence of geometric primitives, beginning with element first.  mode
       specifies what kind of primitives are constructed and how the array elements construct
       those primitives.

       Vertex attributes that are modified by glDrawArrays have an unspecified value after
       glDrawArrays returns. Attributes that aren't modified remain well defined.

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 count is negative.

       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.

SEE ALSO

       glDrawArraysInstanced(), glDrawElements(), glDrawRangeElements(),

COPYRIGHT

       Copyright © 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