Интерактивная система просмотра системных руководств (man-ов)
glColorPointer (3)
>> glColorPointer (3) ( Разные man: Библиотечные вызовы )
NAME
glColorPointer
- define an array of colors
C SPECIFICATION
void glColorPointer(
GLint size,
GLenum type,
GLsizei stride,
const GLvoid *ptr )
delim $$
PARAMETERS
size
Specifies the number of components per color. Must be 3 or 4.
The initial value is 4.
type
Specifies the data type of each color component in the array.
Symbolic constants
GL_BYTE,
GL_UNSIGNED_BYTE,
GL_SHORT,
GL_UNSIGNED_SHORT,
GL_INT,
GL_UNSIGNED_INT,
GL_FLOAT,
and
GL_DOUBLE
are accepted.
The initial value is GL_FLOAT.
stride
Specifies the byte offset between consecutive colors.
If stride is 0 (the initial value), the colors are understood to be
tightly packed in the array. The initial value is 0.
ptr
Specifies a pointer to the first component of the first color element
in the array.
DESCRIPTION
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 3 or 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;
see glInterleavedArrays.)
When a color array is specified,
size, type, stride, and ptr are saved as client-side
state.
To enable and disable the color array, call glEnableClientState and
glDisableClientState with the argument GL_COLOR_ARRAY. If
enabled, the color array is used when glDrawArrays,
glDrawElements, glDrawRangeElements, or glArrayElement is
called.
NOTES
glColorPointer is available only if the GL version is 1.1 or greater.
The color array is initially disabled and isn't accessed when
glArrayElement, glDrawArrays, glDrawRangeElements,
or glDrawElements is called.
Execution of glColorPointer is not allowed between the execution of
glBegin and the corresponding execution of glEnd,
but an error may or may not be generated. If no error is generated,
the operation is undefined.
glColorPointer is typically implemented on the client side.
Color array parameters are client-side state and are therefore not saved
or restored by glPushAttrib and glPopAttrib.
Use glPushClientAttrib and glPopClientAttrib instead.
ERRORS
GL_INVALID_VALUE is generated if size is not 3 or 4.
GL_INVALID_ENUM is generated if type is not an accepted value.
GL_INVALID_VALUE is generated if stride is negative.
ASSOCIATED GETS
glIsEnabled with argument GL_COLOR_ARRAY glGet with argument GL_COLOR_ARRAY_SIZE glGet with argument GL_COLOR_ARRAY_TYPE glGet with argument GL_COLOR_ARRAY_STRIDE glGetPointerv with argument GL_COLOR_ARRAY_POINTER
