glColor.3gl

Name

  glColor3b, glColor3d,	glColor3f, glColor3i, glColor3s, glColor3ub,

  glColor3ui, glColor3us, glColor4b, glColor4d,	glColor4f, glColor4i,

  glColor4s, glColor4ub, glColor4ui, glColor4us, glColor3bv, glColor3dv,

  glColor3fv, glColor3iv, glColor3sv, glColor3ubv, glColor3uiv,	glColor3usv,

  glColor4bv, glColor4dv, glColor4fv, glColor4iv, glColor4sv, glColor4ubv,

  glColor4uiv, glColor4usv - set the current color

C Specification

  void glColor3b( GLbyte red,

		  GLbyte green,

		  GLbyte blue )

  void glColor3d( GLdouble red,

		  GLdouble green,

		  GLdouble blue	)

  void glColor3f( GLfloat red,

		  GLfloat green,

		  GLfloat blue )

  void glColor3i( GLint	red,

		  GLint	green,

		  GLint	blue )

  void glColor3s( GLshort red,

		  GLshort green,

		  GLshort blue )

  void glColor3ub( GLubyte red,

		   GLubyte green,

		   GLubyte blue	)

  void glColor3ui( GLuint red,

		   GLuint green,

		   GLuint blue )

  void glColor3us( GLushort red,

		   GLushort green,

		   GLushort blue )

  void glColor4b( GLbyte red,

		  GLbyte green,

		  GLbyte blue,

		  GLbyte alpha )

  void glColor4d( GLdouble red,

		  GLdouble green,

		  GLdouble blue,

		  GLdouble alpha )

  void glColor4f( GLfloat red,

		  GLfloat green,

		  GLfloat blue,

		  GLfloat alpha	)

  void glColor4i( GLint	red,

		  GLint	green,

		  GLint	blue,

		  GLint	alpha )

  void glColor4s( GLshort red,

		  GLshort green,

		  GLshort blue,

		  GLshort alpha	)

  void glColor4ub( GLubyte red,

		   GLubyte green,

		   GLubyte blue,

		   GLubyte alpha )

  void glColor4ui( GLuint red,

		   GLuint green,

		   GLuint blue,

		   GLuint alpha	)

  void glColor4us( GLushort red,

		   GLushort green,

		   GLushort blue,

		   GLushort alpha )

Parameters

  red, green, blue

		  Specify new red, green, and blue values for the current

		  color.



  alpha		  Specifies a new alpha	value for the current color.

		  Included only	in the four-argument glColor4 command.

C Specification

  void glColor3bv( const GLbyte	*v )

  void glColor3dv( const GLdouble *v )

  void glColor3fv( const GLfloat *v )

  void glColor3iv( const GLint *v )

  void glColor3sv( const GLshort *v )

  void glColor3ubv( const GLubyte *v )

  void glColor3uiv( const GLuint *v )

  void glColor3usv( const GLushort *v )

  void glColor4bv( const GLbyte	*v )

  void glColor4dv( const GLdouble *v )

  void glColor4fv( const GLfloat *v )

  void glColor4iv( const GLint *v )

  void glColor4sv( const GLshort *v )

  void glColor4ubv( const GLubyte *v )

  void glColor4uiv( const GLuint *v )

  void glColor4usv( const GLushort *v )

Parameters

  v    Specifies a pointer to an array that contains red, green, blue, and

       (sometimes) alpha values.

Description

  The GL stores	both a current single-valued color index and a current four-

  valued RGBA color.  glColor sets a new four-valued RGBA color.  glColor has

  two major variants: glColor3 and glColor4.  glColor3 variants	specify	new

  red, green, and blue values explicitly, and set the current alpha value to

  1.0 implicitly.  glColor4 variants specify all four color components

  explicitly.



  glColor3b, glColor4b,	glColor3s, glColor4s, glColor3i, and glColor4i take

  three	or four	signed byte, short, or long integers as	arguments.  When v is

  appended to the name,	the color commands can take a pointer to an array of

  such values.



  Current color	values are stored in floating-point format, with unspecified

  mantissa and exponent	sizes.	Unsigned integer color components, when

  specified, are linearly mapped to floating-point values such that the

  largest representable	value maps to 1.0 (full	intensity), and	zero maps to

  0.0 (zero intensity).	 Signed	integer	color components, when specified, are

  linearly mapped to floating-point values such	that the most positive

  representable	value maps to 1.0, and the most	negative representable value

  maps to -1.0.	 Floating-point	values are mapped directly.





  Neither floating-point nor signed integer values are clamped to the range

  [0,1]	before updating	the current color.  However, color components are

  clamped to this range	before they are	interpolated or	written	into a color

  buffer.

Notes

  The current color can	be updated at any time.	 In particular,	glColor	can

  be called between a call to glBegin and the corresponding call to glEnd.

Associated Gets

  glGet	with argument GL_CURRENT_COLOR

  glGet	with argument GL_RGBA_MODE

See Also

  glIndex

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Last Edited: Mon, May 22, 1995

AFV