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
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40
  41 /* XXX: these are a kludge.  will fix when all surfaces are views into
  42  * textures, and free-floating winsys surfaces go away.
  43  */
  44 static INLINE void *
  45 pipe_surface_map( struct pipe_surface *surf, unsigned flags )
  46 {
  47    struct pipe_screen *screen;
  48    assert(surf->texture);
  49    screen = surf->texture->screen;
  50    return screen->surface_map( screen, surf, flags );
  51 }
  52
  53 static INLINE void
  54 pipe_surface_unmap( struct pipe_surface *surf )
  55 {
  56    struct pipe_screen *screen;
  57    assert(surf->texture);
  58    screen = surf->texture->screen;
  59    screen->surface_unmap( screen, surf );
  60 }
  61
  62
  63
  64 /**
  65  * Set 'ptr' to point to 'surf' and update reference counting.
  66  * The old thing pointed to, if any, will be unreferenced first.
  67  * 'surf' may be NULL.
  68  */
  69 static INLINE void
  70 pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
  71 {
  72    /* bump the refcount first */
  73    if (surf) {
  74       assert(surf->refcount);
  75       surf->refcount++;
  76    }
  77
  78    if (*ptr) {
  79       struct pipe_screen *screen;
  80       assert((*ptr)->refcount);
  81       assert((*ptr)->texture);
  82       screen = (*ptr)->texture->screen;
  83       screen->tex_surface_release( screen, ptr );
  84       assert(!*ptr);
  85    }
  86
  87    *ptr = surf;
  88 }
  89
  90
  91 /**
  92  * \sa pipe_surface_reference
  93  */
  94 static INLINE void
  95 pipe_texture_reference(struct pipe_texture **ptr,
  96                        struct pipe_texture *pt)
  97 {
  98    assert(ptr);
  99
 100    if (pt) {
 101       assert(pt->refcount);
 102       pt->refcount++;
 103    }
 104
 105    if (*ptr) {
 106       struct pipe_screen *screen = (*ptr)->screen;
 107       assert(screen);
 108       assert((*ptr)->refcount);
 109       screen->texture_release(screen, ptr);
 110
 111       assert(!*ptr);
 112    }
 113
 114    *ptr = pt;
 115 }
 116
 117
 118 static INLINE void
 119 pipe_texture_release(struct pipe_texture **ptr)
 120 {
 121    struct pipe_screen *screen;
 122    assert(ptr);
 123    screen = (*ptr)->screen;
 124    assert((*ptr)->refcount);
 125    screen->texture_release(screen, ptr);
 126    *ptr = NULL;
 127 }
 128
 129
 130 /**
 131  * Convenience wrappers for screen buffer functions.
 132  */
 133
 134 static INLINE struct pipe_buffer *
 135 pipe_buffer_create( struct pipe_screen *screen,
 136                     unsigned alignment, unsigned usage, unsigned size )
 137 {
 138    return screen->buffer_create(screen, alignment, usage, size);
 139 }
 140
 141 static INLINE struct pipe_buffer *
 142 pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size )
 143 {
 144    return screen->user_buffer_create(screen, ptr, size);
 145 }
 146
 147 static INLINE void *
 148 pipe_buffer_map(struct pipe_screen *screen,
 149                 struct pipe_buffer *buf,
 150                 unsigned usage)
 151 {
 152    return screen->buffer_map(screen, buf, usage);
 153 }
 154
 155 static INLINE void
 156 pipe_buffer_unmap(struct pipe_screen *screen,
 157                   struct pipe_buffer *buf)
 158 {
 159    screen->buffer_unmap(screen, buf);
 160 }
 161
 162 /* XXX: thread safety issues!
 163  */
 164 static INLINE void
 165 pipe_buffer_reference(struct pipe_screen *screen,
 166                       struct pipe_buffer **ptr,
 167                       struct pipe_buffer *buf)
 168 {
 169    if (buf) {
 170       assert(buf->refcount);
 171       buf->refcount++;
 172    }
 173
 174    if (*ptr) {
 175       assert((*ptr)->refcount);
 176       if(--(*ptr)->refcount == 0) {
 177          screen->buffer_destroy( screen, *ptr );
 178       }
 179    }
 180
 181    *ptr = buf;
 182 }
 183
 184
 185 #ifdef __cplusplus
 186 }
 187 #endif
 188
 189 #endif /* P_INLINES_H */