/**************************************************************************
*
* Copyright 2009-2010 VMware, Inc.
* 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.
*
*
**************************************************************************/
/**
* @file
* Softpipe/LLVMpipe support.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#include <windows.h>
#include "util/u_debug.h"
#include "stw_winsys.h"
#include "stw_device.h"
#include "gdi/gdi_sw_winsys.h"
#include "softpipe/sp_texture.h"
#include "softpipe/sp_screen.h"
#include "softpipe/sp_public.h"
#ifdef HAVE_LLVMPIPE
#include "llvmpipe/lp_texture.h"
#include "llvmpipe/lp_screen.h"
#include "llvmpipe/lp_public.h"
#endif
static boolean use_llvmpipe = FALSE;
static struct pipe_screen *
gdi_screen_create(void)
{
const char *default_driver;
const char *driver;
struct pipe_screen *screen = NULL;
struct sw_winsys *winsys;
winsys = gdi_create_sw_winsys();
if(!winsys)
goto no_winsys;
#ifdef HAVE_LLVMPIPE
default_driver = "llvmpipe";
#else
default_driver = "softpipe";
#endif
driver = debug_get_option("GALLIUM_DRIVER", default_driver);
#ifdef HAVE_LLVMPIPE
if (strcmp(driver
, "llvmpipe") == 0) { screen = llvmpipe_create_screen( winsys );
}
#else
(void) driver;
#endif
if (screen == NULL) {
screen = softpipe_create_screen( winsys );
} else {
use_llvmpipe = TRUE;
}
if(!screen)
goto no_screen;
return screen;
no_screen:
winsys->destroy(winsys);
no_winsys:
return NULL;
}
static void
gdi_present(struct pipe_screen *screen,
struct pipe_resource *res,
HDC hDC)
{
/* This will fail if any interposing layer (trace, debug, etc) has
* been introduced between the state-trackers and the pipe driver.
*
* Ideally this would get replaced with a call to
* pipe_screen::flush_frontbuffer().
*
* Failing that, it may be necessary for intervening layers to wrap
* other structs such as this stw_winsys as well...
*/
struct sw_winsys *winsys = NULL;
struct sw_displaytarget *dt = NULL;
#ifdef HAVE_LLVMPIPE
if (use_llvmpipe) {
winsys = llvmpipe_screen(screen)->winsys;
dt = llvmpipe_resource(res)->dt;
gdi_sw_display(winsys, dt, hDC);
return;
}
#endif
winsys = softpipe_screen(screen)->winsys,
dt = softpipe_resource(res)->dt,
gdi_sw_display(winsys, dt, hDC);
}
static const struct stw_winsys stw_winsys = {
&gdi_screen_create,
&gdi_present,
NULL, /* get_adapter_luid */
NULL, /* shared_surface_open */
NULL, /* shared_surface_close */
NULL /* compose */
};
EXTERN_C BOOL WINAPI
DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved);
BOOL WINAPI
DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
switch (fdwReason) {
case DLL_PROCESS_ATTACH:
stw_init(&stw_winsys);
stw_init_thread();
break;
case DLL_THREAD_ATTACH:
stw_init_thread();
break;
case DLL_THREAD_DETACH:
stw_cleanup_thread();
break;
case DLL_PROCESS_DETACH:
if (lpvReserved == NULL) {
// We're being unloaded from the process.
stw_cleanup_thread();
stw_cleanup();
} else {
// Process itself is terminating, and all threads and modules are
// being detached.
//
// The order threads (including llvmpipe rasterizer threads) are
// destroyed can not be relied up, so it's not safe to cleanup.
//
// However global destructors (e.g., LLVM's) will still be called, and
// if Microsoft OPENGL32.DLL's DllMain is called after us, it will
// still try to invoke DrvDeleteContext to destroys all outstanding,
// so set stw_dev to NULL to return immediately if that happens.
stw_dev = NULL;
}
break;
}
return TRUE;
}