src/gallium/state_trackers/wgl/stw_device.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <windows.h>
  29
  30 #include "glapi/glthread.h"
  31 #include "util/u_debug.h"
  32 #include "util/u_math.h"
  33 #include "util/u_memory.h"
  34 #include "pipe/p_screen.h"
  35
  36 #include "stw_device.h"
  37 #include "stw_winsys.h"
  38 #include "stw_pixelformat.h"
  39 #include "stw_icd.h"
  40 #include "stw_tls.h"
  41 #include "stw_framebuffer.h"
  42 #include "stw_st.h"
  43
  44 #ifdef WIN32_THREADS
  45 extern _glthread_Mutex OneTimeLock;
  46 #endif
  47
  48
  49 struct stw_device *stw_dev = NULL;
  50
  51 static int
  52 stw_get_param(struct st_manager *smapi,
  53               enum st_manager_param param)
  54 {
  55    return 0;
  56 }
  57
  58 boolean
  59 stw_init(const struct stw_winsys *stw_winsys)
  60 {
  61    static struct stw_device stw_dev_storage;
  62    struct pipe_screen *screen;
  63
  64    debug_printf("%s\n", __FUNCTION__);
  65
  66    assert(!stw_dev);
  67
  68    stw_tls_init();
  69
  70    stw_dev = &stw_dev_storage;
  71    memset(stw_dev, 0, sizeof(*stw_dev));
  72
  73 #ifdef DEBUG
  74    stw_dev->memdbg_no = debug_memory_begin();
  75 #endif
  76
  77    stw_dev->stw_winsys = stw_winsys;
  78
  79 #ifdef WIN32_THREADS
  80    _glthread_INIT_MUTEX(OneTimeLock);
  81 #endif
  82
  83    stw_dev->stapi = stw_st_create_api();
  84    stw_dev->smapi = CALLOC_STRUCT(st_manager);
  85    if (!stw_dev->stapi || !stw_dev->smapi)
  86       goto error1;
  87
  88    screen = stw_winsys->create_screen();
  89    if(!screen)
  90       goto error1;
  91
  92    if(stw_winsys->get_adapter_luid)
  93       stw_winsys->get_adapter_luid(screen, &stw_dev->AdapterLuid);
  94
  95    stw_dev->smapi->screen = screen;
  96    stw_dev->smapi->get_param = stw_get_param;
  97    stw_dev->screen = screen;
  98
  99    pipe_mutex_init( stw_dev->ctx_mutex );
 100    pipe_mutex_init( stw_dev->fb_mutex );
 101
 102    stw_dev->ctx_table = handle_table_create();
 103    if (!stw_dev->ctx_table) {
 104       goto error1;
 105    }
 106
 107    stw_pixelformat_init();
 108
 109    return TRUE;
 110
 111 error1:
 112    if (stw_dev->smapi)
 113       FREE(stw_dev->smapi);
 114    if (stw_dev->stapi)
 115       stw_dev->stapi->destroy(stw_dev->stapi);
 116
 117    stw_dev = NULL;
 118    return FALSE;
 119 }
 120
 121
 122 boolean
 123 stw_init_thread(void)
 124 {
 125    return stw_tls_init_thread();
 126 }
 127
 128
 129 void
 130 stw_cleanup_thread(void)
 131 {
 132    stw_tls_cleanup_thread();
 133 }
 134
 135
 136 void
 137 stw_cleanup(void)
 138 {
 139    DHGLRC dhglrc;
 140
 141    debug_printf("%s\n", __FUNCTION__);
 142
 143    if (!stw_dev)
 144       return;
 145
 146    /*
 147     * Abort cleanup if there are still active contexts. In some situations
 148     * this DLL may be unloaded before the DLL that is using GL contexts is.
 149     */
 150    pipe_mutex_lock( stw_dev->ctx_mutex );
 151    dhglrc = handle_table_get_first_handle(stw_dev->ctx_table);
 152    pipe_mutex_unlock( stw_dev->ctx_mutex );
 153    if (dhglrc) {
 154       debug_printf("%s: contexts still active -- cleanup aborted\n", __FUNCTION__);
 155       stw_dev = NULL;
 156       return;
 157    }
 158
 159    handle_table_destroy(stw_dev->ctx_table);
 160
 161    stw_framebuffer_cleanup();
 162
 163    pipe_mutex_destroy( stw_dev->fb_mutex );
 164    pipe_mutex_destroy( stw_dev->ctx_mutex );
 165
 166    FREE(stw_dev->smapi);
 167    stw_dev->stapi->destroy(stw_dev->stapi);
 168
 169    stw_dev->screen->destroy(stw_dev->screen);
 170
 171 #ifdef WIN32_THREADS
 172    _glthread_DESTROY_MUTEX(OneTimeLock);
 173
 174    _glapi_destroy_multithread();
 175 #endif
 176
 177 #ifdef DEBUG
 178    debug_memory_end(stw_dev->memdbg_no);
 179 #endif
 180
 181    stw_tls_cleanup();
 182
 183    stw_dev = NULL;
 184 }
 185
 186
 187 struct stw_context *
 188 stw_lookup_context_locked( DHGLRC dhglrc )
 189 {
 190    if (dhglrc == 0)
 191       return NULL;
 192
 193    if (stw_dev == NULL)
 194       return NULL;
 195
 196    return (struct stw_context *) handle_table_get(stw_dev->ctx_table, dhglrc);
 197 }
 198
 199
 200 void APIENTRY
 201 DrvSetCallbackProcs(
 202    INT nProcs,
 203    PROC *pProcs )
 204 {
 205    size_t size;
 206
 207    if (stw_dev == NULL)
 208       return;
 209
 210    size = MIN2(nProcs * sizeof *pProcs, sizeof stw_dev->callbacks);
 211    memcpy(&stw_dev->callbacks, pProcs, size);
 212
 213    return;
 214 }
 215
 216
 217 BOOL APIENTRY
 218 DrvValidateVersion(
 219    ULONG ulVersion )
 220 {
 221    /* TODO: get the expected version from the winsys */
 222    return ulVersion == 1;
 223 }