GLDRAWARRAYS - Online Linux Manual PageSection : 3G
NAME"glDrawArrays − render primitives from array data
C SPECIFICATIONvoid glDrawArrays( GLenum mode, GLint first, GLsizei count )
PARAMETERSmode  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. first  Specifies the starting index in the enabled arrays. count  Specifies the number of indices to be rendered.
DESCRIPTION­glDrawArrays 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. 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.
NOTES­glDrawArrays is available only if the GL version is 1.1 or greater. ­glDrawArrays is included in display lists. If ­glDrawArrays 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.
ERRORS­GL_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 ­glDrawArrays is executed between the execution of ­glBegin and the corresponding ­glEnd.
SEE ALSO­glArrayElement(3G), ­glColorPointer(3G), ­glDrawElements(3G), ­glDrawRangeElements(3G), ­glEdgeFlagPointer(3G), ­glGetPointerv(3G), ­glIndexPointer(3G), ­glInterleavedArrays(3G), ­glNormalPointer(3G), ­glTexCoordPointer(3G), ­glVertexPointer(3G) 0
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