glGetPixelMap(3G)	       OpenGL Reference		     glGetPixelMap(3G)



NAME
     glGetPixelMapfv, glGetPixelMapuiv,	glGetPixelMapusv - return the
     specified pixel map


C SPECIFICATION
     void glGetPixelMapfv( GLenum map,
			   GLfloat *values )
     void glGetPixelMapuiv( GLenum map,
			    GLuint *values )
     void glGetPixelMapusv( GLenum map,
			    GLushort *values )


PARAMETERS
     map     Specifies the name	of the pixel map to return.  Accepted values
	     are GL_PIXEL_MAP_I_TO_I, GL_PIXEL_MAP_S_TO_S,
	     GL_PIXEL_MAP_I_TO_R, GL_PIXEL_MAP_I_TO_G, GL_PIXEL_MAP_I_TO_B,
	     GL_PIXEL_MAP_I_TO_A, GL_PIXEL_MAP_R_TO_R, GL_PIXEL_MAP_G_TO_G,
	     GL_PIXEL_MAP_B_TO_B, and GL_PIXEL_MAP_A_TO_A.

     values  Returns the pixel map contents.


DESCRIPTION
     Please see	the glPixelMap reference page for a description	of the
     acceptable	values for the map parameter.  glGetPixelMap returns in	values
     the contents of the pixel map specified in	map.  Pixel maps are used
     during the	execution of glReadPixels, glDrawPixels, glCopyPixels,
     glTexImage1D, and glTexImage2D to map color indices, stencil indices,
     color components, and depth components to other values.

     Unsigned integer values, if requested, are	linearly mapped	from the
     internal fixed or floating-point representation such that 1.0 maps	to the
     largest representable integer value, and 0.0 maps to zero.	 Return
     unsigned integer values are undefined if the map value was	not in the
     range [0,1].

     To	determine the required size of map, call glGet with the	appropriate
     symbolic constant.

NOTES
     If	an error is generated, no change is made to the	contents of values.

ERRORS
     GL_INVALID_ENUM is	generated if map is not	an accepted value.

     GL_INVALID_OPERATION is generated if glGetPixelMap	is executed between
     the execution of glBegin and the corresponding execution of glEnd.






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glGetPixelMap(3G)	       OpenGL Reference		     glGetPixelMap(3G)



ASSOCIATED GETS
     glGet with	argument GL_PIXEL_MAP_I_TO_I_SIZE
     glGet with	argument GL_PIXEL_MAP_S_TO_S_SIZE
     glGet with	argument GL_PIXEL_MAP_I_TO_R_SIZE
     glGet with	argument GL_PIXEL_MAP_I_TO_G_SIZE
     glGet with	argument GL_PIXEL_MAP_I_TO_B_SIZE
     glGet with	argument GL_PIXEL_MAP_I_TO_A_SIZE
     glGet with	argument GL_PIXEL_MAP_R_TO_R_SIZE
     glGet with	argument GL_PIXEL_MAP_G_TO_G_SIZE
     glGet with	argument GL_PIXEL_MAP_B_TO_B_SIZE
     glGet with	argument GL_PIXEL_MAP_A_TO_A_SIZE
     glGet with	argument GL_MAX_PIXEL_MAP_TABLE


SEE ALSO
     glCopyPixels, glDrawPixels, glPixelMap, glPixelTransfer, glReadPixels,
     glTexImage1D, glTexImage2D






































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