glgetpixelmapusv man page on SunOS

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GLGETPIXELMAP(3gl)					    GLGETPIXELMAP(3gl)

NAME
       glGetPixelMapfv, glGetPixelMapuiv, glGetPixelMapusv - return the speci‐
       fied 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
       See the glPixelMap reference page for a description of  the  acceptable
       values for the map parameter.  glGetPixelMap returns in values the con‐
       tents of the pixel map specified in map.	 Pixel maps  are  used	during
       the  execution  of  glReadPixels,  glDrawPixels, glCopyPixels, glTexIm‐
       age1D, 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 0.	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.

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

				   15 Mar 97		    GLGETPIXELMAP(3gl)
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