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/* Copyright (c) 2001, Stanford University
* All rights reserved
*
* See the file LICENSE.txt for information on redistributing this software.
*/
#include "packer.h"
#include "cr_mem.h"
#include "cr_glstate.h"
static unsigned char * __gl_HandlePixelMapData(GLenum map, GLsizei mapsize, int size_of_value, const GLvoid *values)
{
int nodata = (values == NULL) || crStateIsBufferBound(GL_PIXEL_UNPACK_BUFFER_ARB);
int packet_length =
sizeof( map ) +
sizeof( mapsize ) + sizeof(int) + sizeof(GLint);
unsigned char *data_ptr;
if (!nodata)
{
packet_length += mapsize*size_of_value;
}
data_ptr = (unsigned char *) crPackAlloc( packet_length );
WRITE_DATA( 0, GLenum, map );
WRITE_DATA( 4, GLsizei, mapsize );
WRITE_DATA( 8, int, nodata);
WRITE_DATA( 12, GLint, (GLint)(uintptr_t)values);
if (!nodata)
{
crMemcpy( data_ptr + 16, values, mapsize*size_of_value );
}
return data_ptr;
}
void PACK_APIENTRY crPackPixelMapfv(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 crPackPixelMapuiv(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 crPackPixelMapusv(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 );
}
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