src/gallium/include/pipe/p_inlines.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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 #ifndef P_INLINES_H
  29 #define P_INLINES_H
  30
  31 #include "p_context.h"
  32 #include "p_defines.h"
  33 #include "p_screen.h"
  34 #include "p_winsys.h"
  35
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41
  42 /* XXX: these are a kludge.  will fix when all surfaces are views into
  43  * textures, and free-floating winsys surfaces go away.
  44  */
  45 static INLINE void *
  46 pipe_surface_map( struct pipe_surface *surf, unsigned flags )
  47 {
  48    if (surf->texture) {
  49       struct pipe_screen *screen = surf->texture->screen;
  50       return surf->texture->screen->surface_map( screen, surf, flags );
  51    }
  52    else {
  53       struct pipe_winsys *winsys = surf->winsys;
  54       char *map = (char *)winsys->buffer_map( winsys, surf->buffer, flags );
  55       if (map == NULL)
  56          return NULL;
  57       return (void *)(map + surf->offset);
  58    }
  59 }
  60
  61 static INLINE void
  62 pipe_surface_unmap( struct pipe_surface *surf )
  63 {
  64    if (surf->texture) {
  65       struct pipe_screen *screen = surf->texture->screen;
  66       surf->texture->screen->surface_unmap( screen, surf );
  67    }
  68    else {
  69       struct pipe_winsys *winsys = surf->winsys;
  70       winsys->buffer_unmap( winsys, surf->buffer );
  71    }
  72 }
  73
  74
  75
  76 /**
  77  * Set 'ptr' to point to 'surf' and update reference counting.
  78  * The old thing pointed to, if any, will be unreferenced first.
  79  * 'surf' may be NULL.
  80  */
  81 static INLINE void
  82 pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
  83 {
  84    /* bump the refcount first */
  85    if (surf) {
  86       assert(surf->refcount);
  87       surf->refcount++;
  88    }
  89
  90    if (*ptr) {
  91       assert((*ptr)->refcount);
  92
  93       /* There are currently two sorts of surfaces... This needs to be
  94        * fixed so that all surfaces are views into a texture.
  95        */
  96       if ((*ptr)->texture) {
  97          struct pipe_screen *screen = (*ptr)->texture->screen;
  98          screen->tex_surface_release( screen, ptr );
  99       }
 100       else {
 101          struct pipe_winsys *winsys = (*ptr)->winsys;
 102          winsys->surface_release(winsys, ptr);
 103       }
 104
 105       assert(!*ptr);
 106    }
 107
 108    *ptr = surf;
 109 }
 110
 111
 112 /* XXX: thread safety issues!
 113  */
 114 static INLINE void
 115 winsys_buffer_reference(struct pipe_winsys *winsys,
 116                       struct pipe_buffer **ptr,
 117                       struct pipe_buffer *buf)
 118 {
 119    if (buf) {
 120       assert(buf->refcount);
 121       buf->refcount++;
 122    }
 123
 124    if (*ptr) {
 125       assert((*ptr)->refcount);
 126       if(--(*ptr)->refcount == 0)
 127          winsys->buffer_destroy( winsys, *ptr );
 128    }
 129
 130    *ptr = buf;
 131 }
 132
 133
 134
 135 /**
 136  * \sa pipe_surface_reference
 137  */
 138 static INLINE void
 139 pipe_texture_reference(struct pipe_texture **ptr,
 140                        struct pipe_texture *pt)
 141 {
 142    assert(ptr);
 143
 144    if (pt) {
 145       assert(pt->refcount);
 146       pt->refcount++;
 147    }
 148
 149    if (*ptr) {
 150       struct pipe_screen *screen = (*ptr)->screen;
 151       assert(screen);
 152       assert((*ptr)->refcount);
 153       screen->texture_release(screen, ptr);
 154
 155       assert(!*ptr);
 156    }
 157
 158    *ptr = pt;
 159 }
 160
 161
 162 static INLINE void
 163 pipe_texture_release(struct pipe_texture **ptr)
 164 {
 165    struct pipe_screen *screen;
 166    assert(ptr);
 167    screen = (*ptr)->screen;
 168    assert((*ptr)->refcount);
 169    screen->texture_release(screen, ptr);
 170    *ptr = NULL;
 171 }
 172
 173
 174 /**
 175  * Convenience wrappers for winsys buffer functions.
 176  */
 177
 178 static INLINE struct pipe_buffer *
 179 pipe_buffer_create( struct pipe_screen *screen,
 180                     unsigned alignment, unsigned usage, unsigned size )
 181 {
 182    return screen->winsys->buffer_create(screen->winsys, alignment, usage, size);
 183 }
 184
 185 static INLINE struct pipe_buffer *
 186 pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size )
 187 {
 188    return screen->winsys->user_buffer_create(screen->winsys, ptr, size);
 189 }
 190
 191 static INLINE void *
 192 pipe_buffer_map(struct pipe_screen *screen,
 193                 struct pipe_buffer *buf,
 194                 unsigned usage)
 195 {
 196    return screen->winsys->buffer_map(screen->winsys, buf, usage);
 197 }
 198
 199 static INLINE void
 200 pipe_buffer_unmap(struct pipe_screen *screen,
 201                   struct pipe_buffer *buf)
 202 {
 203    screen->winsys->buffer_unmap(screen->winsys, buf);
 204 }
 205
 206 /* XXX when we're using this everywhere, get rid of
 207  * winsys_buffer_reference() above.
 208  */
 209 static INLINE void
 210 pipe_buffer_reference(struct pipe_screen *screen,
 211                       struct pipe_buffer **ptr,
 212                       struct pipe_buffer *buf)
 213 {
 214    winsys_buffer_reference(screen->winsys, ptr, buf);
 215 }
 216
 217
 218 #ifdef __cplusplus
 219 }
 220 #endif
 221
 222 #endif /* P_INLINES_H */