source: vbox/trunk/src/VBox/GuestHost/OpenGL/packer/pack_swap_pixelmap.c@ 18171

/* Copyright (c) 2001, Stanford University
 * All rights reserved
 *
 * See the file LICENSE.txt for information on redistributing this software.
 */

#include "packer.h"

static unsigned char * __gl_HandlePixelMapData( GLenum map, GLsizei mapsize, int size_of_value, const GLvoid *values )
{
        int i;

        int packet_length = 
                sizeof( map ) + 
                sizeof( mapsize ) + 
                mapsize*size_of_value;
        unsigned char *data_ptr = (unsigned char *) crPackAlloc( packet_length );

        WRITE_DATA( 0, GLenum, SWAP32(map) );
        WRITE_DATA( 4, GLsizei, SWAP32(mapsize) );

        for (i = 0 ; i < mapsize ; i++)
        {
                switch( size_of_value )
                {
                        case 2:
                                WRITE_DATA( 8 + i*sizeof(GLshort), GLshort, SWAP16(*((GLshort *)values + i) ));
                                break;
                        case 4:
                                WRITE_DATA( 8 + i*sizeof(GLint), GLint, SWAP32(*((GLint *)values + i) ));
                                break;
                }
        }
        return data_ptr;
}

void PACK_APIENTRY crPackPixelMapfvSWAP(GLenum map, GLsizei mapsize, 
                const GLfloat *values )
{
        unsigned char *data_ptr = __gl_HandlePixelMapData( map, mapsize, sizeof( *values ), values );

        crHugePacket( CR_PIXELMAPFV_OPCODE, data_ptr );
        crPackFree( data_ptr );
}

void PACK_APIENTRY crPackPixelMapuivSWAP(GLenum map, GLsizei mapsize, 
                const GLuint *values )
{
        unsigned char *data_ptr = __gl_HandlePixelMapData( map, mapsize, sizeof( *values ), values );

        crHugePacket( CR_PIXELMAPUIV_OPCODE, data_ptr );
        crPackFree( data_ptr );
}

void PACK_APIENTRY crPackPixelMapusvSWAP(GLenum map, GLsizei mapsize, 
                const GLushort *values )
{
        unsigned char *data_ptr = __gl_HandlePixelMapData( map, mapsize, sizeof( *values ), values );

        crHugePacket( CR_PIXELMAPUSV_OPCODE, data_ptr );
        crPackFree( data_ptr );
}