glColorPointer
- define an array of colors
void glColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer)
size
Specifies the number of components per color. Must be 4. The initial value is 4.
type
Specifies the data type of each color component in the array. Symbolic constants GL_UNSIGNED_BYTE
and GL_FIXED
are accepted. However, the initial value is GL_FLOAT
.
The common profile accepts the symbolic constant GL_FLOAT
as well.
stride
Specifies the byte offset between consecutive colors. If stride
is 0, the colors are understood to be tightly packed in the array. The initial value is 0.
pointer
Specifies a pointer to the first component of the first color element in the array.
glColorPointer
specifies the location and data of an array of color components to use when rendering. size
specifies the number of components per color, and must be 4. type
specifies the data type of each color component, and stride
specifies the byte stride from one color to the next allowing vertices and attributes to be packed into a single array or stored in separate arrays. (Single-array storage may be more efficient on some implementations.)
When a color array is specified, size
, type
, stride
, and pointer
are saved as client-side state.
If the color array is enabled, it is used when glDrawArrays
, or glDrawElements
is called. To enable and disable the color array, call glEnableClientState
and glDisableClientState
with the argument GL_COLOR_ARRAY
. The color array is initially disabled and isn't accessed when glDrawArrays
or glDrawElements
is called.
Use glDrawArrays
to construct a sequence of primitives (all of the same type) from prespecified vertex and vertex attribute arrays. Use glDrawElements
to construct a sequence of primitives by indexing vertices and vertex attributes.
glColorPointer
is typically implemented on the client side.
GL_INVALID_VALUE
is generated if size
is not 4.
GL_INVALID_ENUM
is generated if type
is not an accepted value.
GL_INVALID_VALUE
is generated if stride
is negative.
Copyright © 2003-2004 Silicon Graphics, Inc.
This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.
glColor
, glDrawArrays
, glDrawElements
, glEnableClientState
, glNormalPointer
, glTexCoordPointer
, glVertexPointer