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 "pipe/p_screen.h"
  33 #include "state_tracker/st_public.h"
  34
  35 #ifdef DEBUG
  36 #include "trace/tr_screen.h"
  37 #include "trace/tr_texture.h"
  38 #endif
  39
  40 #include "stw_device.h"
  41 #include "stw_winsys.h"
  42 #include "stw_pixelformat.h"
  43 #include "stw_icd.h"
  44 #include "stw_tls.h"
  45 #include "stw_framebuffer.h"
  46
  47 #ifdef WIN32_THREADS
  48 extern _glthread_Mutex OneTimeLock;
  49 extern void FreeAllTSD(void);
  50 #endif
  51
  52
  53 struct stw_device *stw_dev = NULL;
  54
  55
  56 /**
  57  * XXX: Dispatch pipe_screen::flush_front_buffer to our
  58  * stw_winsys::flush_front_buffer.
  59  */
  60 static void
  61 stw_flush_frontbuffer(struct pipe_screen *screen,
  62                      struct pipe_surface *surface,
  63                      void *context_private )
  64 {
  65    const struct stw_winsys *stw_winsys = stw_dev->stw_winsys;
  66    HDC hdc = (HDC)context_private;
  67    struct stw_framebuffer *fb;
  68
  69    fb = stw_framebuffer_from_hdc( hdc );
  70    /* fb can be NULL if window was destroyed already */
  71    if (fb) {
  72 #if DEBUG
  73       {
  74          struct pipe_surface *surface2;
  75
  76          if(!st_get_framebuffer_surface( fb->stfb, ST_SURFACE_FRONT_LEFT, &surface2 ))
  77             assert(0);
  78          else
  79             assert(surface2 == surface);
  80       }
  81 #endif
  82
  83 #ifdef DEBUG
  84       if(stw_dev->trace_running) {
  85          screen = trace_screen(screen)->screen;
  86          surface = trace_surface(surface)->surface;
  87       }
  88 #endif
  89    }
  90
  91    stw_winsys->flush_frontbuffer(screen, surface, hdc);
  92
  93    if(fb) {
  94       stw_framebuffer_update(fb);
  95       stw_framebuffer_release(fb);
  96    }
  97 }
  98
  99
 100 boolean
 101 stw_init(const struct stw_winsys *stw_winsys)
 102 {
 103    static struct stw_device stw_dev_storage;
 104    struct pipe_screen *screen;
 105
 106    debug_printf("%s\n", __FUNCTION__);
 107
 108    assert(!stw_dev);
 109
 110    stw_tls_init();
 111
 112    stw_dev = &stw_dev_storage;
 113    memset(stw_dev, 0, sizeof(*stw_dev));
 114
 115 #ifdef DEBUG
 116    stw_dev->memdbg_no = debug_memory_begin();
 117 #endif
 118
 119    stw_dev->stw_winsys = stw_winsys;
 120
 121 #ifdef WIN32_THREADS
 122    _glthread_INIT_MUTEX(OneTimeLock);
 123 #endif
 124
 125    screen = stw_winsys->create_screen();
 126    if(!screen)
 127       goto error1;
 128
 129 #ifdef DEBUG
 130    stw_dev->screen = trace_screen_create(screen);
 131    stw_dev->trace_running = stw_dev->screen != screen ? TRUE : FALSE;
 132 #else
 133    stw_dev->screen = screen;
 134 #endif
 135
 136    stw_dev->screen->flush_frontbuffer = &stw_flush_frontbuffer;
 137
 138    pipe_mutex_init( stw_dev->ctx_mutex );
 139    pipe_mutex_init( stw_dev->fb_mutex );
 140
 141    stw_dev->ctx_table = handle_table_create();
 142    if (!stw_dev->ctx_table) {
 143       goto error1;
 144    }
 145
 146    stw_pixelformat_init();
 147
 148    return TRUE;
 149
 150 error1:
 151    stw_dev = NULL;
 152    return FALSE;
 153 }
 154
 155
 156 boolean
 157 stw_init_thread(void)
 158 {
 159    return stw_tls_init_thread();
 160 }
 161
 162
 163 void
 164 stw_cleanup_thread(void)
 165 {
 166    stw_tls_cleanup_thread();
 167 }
 168
 169
 170 void
 171 stw_cleanup(void)
 172 {
 173    unsigned i;
 174
 175    debug_printf("%s\n", __FUNCTION__);
 176
 177    if (!stw_dev)
 178       return;
 179
 180    pipe_mutex_lock( stw_dev->ctx_mutex );
 181    {
 182       /* Ensure all contexts are destroyed */
 183       i = handle_table_get_first_handle(stw_dev->ctx_table);
 184       while (i) {
 185          DrvDeleteContext(i);
 186          i = handle_table_get_next_handle(stw_dev->ctx_table, i);
 187       }
 188       handle_table_destroy(stw_dev->ctx_table);
 189    }
 190    pipe_mutex_unlock( stw_dev->ctx_mutex );
 191
 192    stw_framebuffer_cleanup();
 193
 194    pipe_mutex_destroy( stw_dev->fb_mutex );
 195    pipe_mutex_destroy( stw_dev->ctx_mutex );
 196
 197    stw_dev->screen->destroy(stw_dev->screen);
 198
 199 #ifdef WIN32_THREADS
 200    _glthread_DESTROY_MUTEX(OneTimeLock);
 201    FreeAllTSD();
 202 #endif
 203
 204 #ifdef DEBUG
 205    debug_memory_end(stw_dev->memdbg_no);
 206 #endif
 207
 208    stw_tls_cleanup();
 209
 210    stw_dev = NULL;
 211 }
 212
 213
 214 struct stw_context *
 215 stw_lookup_context_locked( DHGLRC dhglrc )
 216 {
 217    if (dhglrc == 0)
 218       return NULL;
 219
 220    if (stw_dev == NULL)
 221       return NULL;
 222
 223    return (struct stw_context *) handle_table_get(stw_dev->ctx_table, dhglrc);
 224 }
 225
 226
 227 void APIENTRY
 228 DrvSetCallbackProcs(
 229    INT nProcs,
 230    PROC *pProcs )
 231 {
 232    return;
 233 }
 234
 235
 236 BOOL APIENTRY
 237 DrvValidateVersion(
 238    ULONG ulVersion )
 239 {
 240    /* TODO: get the expected version from the winsys */
 241    return ulVersion == 1;
 242 }