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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell
*/
#include "xlib.h"
#include "xm_winsys.h"
#include <stdlib.h>
#include <assert.h>
/* Todo, replace all this with callback-structs provided by the
* individual implementations.
*/
enum mode {
MODE_CELL,
MODE_LLVMPIPE,
MODE_SOFTPIPE
};
/* advertise OpenGL support */
PUBLIC const int st_api_OpenGL = 1;
static enum mode get_mode()
{
#ifdef GALLIUM_CELL
if (!getenv("GALLIUM_NOCELL"))
return MODE_CELL;
#endif
#if defined(GALLIUM_LLVMPIPE)
return MODE_LLVMPIPE;
#else
return MODE_SOFTPIPE;
#endif
}
static void _init( void ) __attribute__((constructor));
static void _init( void )
{
enum mode xlib_mode = get_mode();
switch (xlib_mode) {
case MODE_CELL:
#if defined(GALLIUM_CELL)
xmesa_set_driver( &xlib_cell_driver );
#endif
break;
case MODE_LLVMPIPE:
#if defined(GALLIUM_LLVMPIPE)
xmesa_set_driver( &xlib_llvmpipe_driver );
#endif
break;
case MODE_SOFTPIPE:
#if defined(GALLIUM_SOFTPIPE)
xmesa_set_driver( &xlib_softpipe_driver );
#endif
break;
default:
assert(0);
break;
}
}
/***********************************************************************
*
* Butt-ugly hack to convince the linker not to throw away public GL
* symbols (they are all referenced from getprocaddress, I guess).
*/
extern void (*linker_foo(const unsigned char *procName))();
extern void (*glXGetProcAddress(const unsigned char *procName))();
extern void (*linker_foo(const unsigned char *procName))()
{
return glXGetProcAddress(procName);
}
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