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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
#include <windows.h>
#include "glapi/glthread.h"
#include "util/u_debug.h"
#include "util/u_math.h"
#include "pipe/p_screen.h"
#include "state_tracker/st_public.h"
#include "stw_device.h"
#include "stw_winsys.h"
#include "stw_pixelformat.h"
#include "stw_icd.h"
#include "stw_tls.h"
#include "stw_framebuffer.h"
#ifdef WIN32_THREADS
extern _glthread_Mutex OneTimeLock;
#endif
struct stw_device *stw_dev = NULL;
/**
* XXX: Dispatch pipe_screen::flush_front_buffer to our
* stw_winsys::flush_front_buffer.
*/
static void
stw_flush_frontbuffer(struct pipe_screen *screen,
struct pipe_surface *surface,
void *context_private )
{
HDC hdc = (HDC)context_private;
struct stw_framebuffer *fb;
fb = stw_framebuffer_from_hdc( hdc );
if (!fb) {
/* fb can be NULL if window was destroyed already */
return;
}
stw_framebuffer_present_locked(hdc, fb, surface);
}
boolean
stw_init(const struct stw_winsys *stw_winsys)
{
static struct stw_device stw_dev_storage;
struct pipe_screen *screen;
debug_printf("%s\n", __FUNCTION__);
assert(!stw_dev);
stw_tls_init();
stw_dev = &stw_dev_storage;
memset(stw_dev, 0, sizeof(*stw_dev));
#ifdef DEBUG
stw_dev->memdbg_no = debug_memory_begin();
#endif
stw_dev->stw_winsys = stw_winsys;
#ifdef WIN32_THREADS
_glthread_INIT_MUTEX(OneTimeLock);
#endif
screen = stw_winsys->create_screen();
if(!screen)
goto error1;
if(stw_winsys->get_adapter_luid)
stw_winsys->get_adapter_luid(screen, &stw_dev->AdapterLuid);
stw_dev->screen = screen;
/* XXX
*/
stw_dev->screen->flush_frontbuffer = &stw_flush_frontbuffer;
pipe_mutex_init( stw_dev->ctx_mutex );
pipe_mutex_init( stw_dev->fb_mutex );
stw_dev->ctx_table = handle_table_create();
if (!stw_dev->ctx_table) {
goto error1;
}
stw_pixelformat_init();
return TRUE;
error1:
stw_dev = NULL;
return FALSE;
}
boolean
stw_init_thread(void)
{
return stw_tls_init_thread();
}
void
stw_cleanup_thread(void)
{
stw_tls_cleanup_thread();
}
void
stw_cleanup(void)
{
DHGLRC dhglrc;
debug_printf("%s\n", __FUNCTION__);
if (!stw_dev)
return;
/*
* Abort cleanup if there are still active contexts. In some situations
* this DLL may be unloaded before the DLL that is using GL contexts is.
*/
pipe_mutex_lock( stw_dev->ctx_mutex );
dhglrc = handle_table_get_first_handle(stw_dev->ctx_table);
pipe_mutex_unlock( stw_dev->ctx_mutex );
if (dhglrc) {
debug_printf("%s: contexts still active -- cleanup aborted\n", __FUNCTION__);
stw_dev = NULL;
return;
}
handle_table_destroy(stw_dev->ctx_table);
stw_framebuffer_cleanup();
pipe_mutex_destroy( stw_dev->fb_mutex );
pipe_mutex_destroy( stw_dev->ctx_mutex );
stw_dev->screen->destroy(stw_dev->screen);
#ifdef WIN32_THREADS
_glthread_DESTROY_MUTEX(OneTimeLock);
_glapi_destroy_multithread();
#endif
#ifdef DEBUG
debug_memory_end(stw_dev->memdbg_no);
#endif
stw_tls_cleanup();
stw_dev = NULL;
}
struct stw_context *
stw_lookup_context_locked( DHGLRC dhglrc )
{
if (dhglrc == 0)
return NULL;
if (stw_dev == NULL)
return NULL;
return (struct stw_context *) handle_table_get(stw_dev->ctx_table, dhglrc);
}
void APIENTRY
DrvSetCallbackProcs(
INT nProcs,
PROC *pProcs )
{
size_t size;
if (stw_dev == NULL)
return;
size = MIN2(nProcs * sizeof *pProcs, sizeof stw_dev->callbacks);
memcpy(&stw_dev->callbacks, pProcs, size);
return;
}
BOOL APIENTRY
DrvValidateVersion(
ULONG ulVersion )
{
/* TODO: get the expected version from the winsys */
return ulVersion == 1;
}
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