glDrawArrays — render primitives from array data

C Specification

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



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, and GL_TRIANGLES are accepted.


Specifies the starting index in the enabled arrays.


Specifies the number of indices to be rendered.


glDrawArrays specifies multiple geometric primitives with very few subroutine calls. You can prespecify separate arrays of vertices, normals, colors, and texture coordinates 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. If GL_VERTEX_ARRAY is not enabled, no geometric primitives are generated.

Vertex attributes that are modified by glDrawArrays have an unspecified value after glDrawArrays returns. For example, if GL_COLOR_ARRAY is enabled, the value of the current color is undefined after glDrawArrays executes. Attributes that aren't modified remain well defined.


GL_INVALID_ENUM is generated if mode is not an accepted value.

GL_INVALID_VALUE is generated if count is negative.

See Also

glClientActiveTexture, glColorPointer, glDrawElements, glNormalPointer, glTexCoordPointer, glVertexPointer


Copyright © 2003-2004 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see