MirOS Manual: glGetPixelMap(3), glGetPixelMapfv(3), glGetPixelMapuiv(3), glGetPixelMapusv(3)


GLGETPIXELMAP(3G)   UNIX Programmer's Manual    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

     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,
     glTexImage2D, glTexImage3D, glTexSubImage1D,
     glTexSubImage2D, glTexSubImage3D, glCopyTexImage1D,
     glCopyTexImage2D, glCopyTexSubImage1D, glCopyTexSubImage2D,
     glCopyTexSubImage3D, glColorTable, glColorSubTable,
     glCopyColorTable, glCopyColorSubTable,
     glConvolutionFilter1D, glConvolutionFilter2D,
     glSeparableFilter2D, glGetHistogram, glGetMinmax, and
     glGetTexImage 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

MirOS BSD #10-current  Printed 03.04.2017                       1

GLGETPIXELMAP(3G)   UNIX Programmer's Manual    GLGETPIXELMAP(3G)

     of values.

ERRORS

     GL_INVALID_ENUM is generated if map is not an accepted
     value.

     GL_INVALID_OPERATION is generated if glGetPixelMap is exe-
     cuted 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

     glColorSubTable(3G), glColorTable(3G),
     glConvolutionFilter1D(3G), glConvolutionFilter2D(3G),
     glCopyColorSubTable(3G), glCopyColorTable(3G),
     glCopyPixels(3G), glCopyTexImage1D(3G),
     glCopyTexImage2D(3G), glCopyTexSubImage1D(3G),
     glCopyTexSubImage2D(3G), glCopyTexSubImage3D(3G),
     glDrawPixels(3G), glGetHistogram(3G), glGetMinmax(3G),
     glGetTexImage(3G), glPixelMap(3G), glPixelTransfer(3G),
     glReadPixels(3G), glSeparableFilter2D(3G), glTexImage1D(3G),
     glTexImage2D(3G) glTexImage3D(3G), glTexSubImage1D(3G),
     glTexSubImage2D(3G), glTexSubImage3D(3G)

MirOS BSD #10-current  Printed 03.04.2017                       2

Generated on 2017-04-03 16:26:17 by $MirOS: src/scripts/roff2htm,v 1.88 2017/01/29 00:51:06 tg Exp $

These manual pages and other documentation are copyrighted by their respective writers; their source is available at our CVSweb, AnonCVS, and other mirrors. The rest is Copyright © 2002–2017 The MirOS Project, Germany.
This product includes material provided by mirabilos.

This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report — diffs preferred.