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       surf->refcount++;
  87
  88    if (*ptr) {
  89
  90       /* There are currently two sorts of surfaces... This needs to be
  91        * fixed so that all surfaces are views into a texture.
  92        */
  93       if ((*ptr)->texture) {
  94          struct pipe_screen *screen = (*ptr)->texture->screen;
  95          screen->tex_surface_release( screen, ptr );
  96       }
  97       else {
  98          struct pipe_winsys *winsys = (*ptr)->winsys;
  99          winsys->surface_release(winsys, ptr);
 100       }
 101
 102       assert(!*ptr);
 103    }
 104
 105    *ptr = surf;
 106 }
 107
 108
 109 /* XXX: thread safety issues!
 110  */
 111 static INLINE void
 112 pipe_buffer_reference(struct pipe_winsys *winsys,
 113                       struct pipe_buffer **ptr,
 114                       struct pipe_buffer *buf)
 115 {
 116    if (buf)
 117       buf->refcount++;
 118
 119    if (*ptr && --(*ptr)->refcount == 0)
 120       winsys->buffer_destroy( winsys, *ptr );
 121
 122    *ptr = buf;
 123 }
 124
 125
 126
 127 /**
 128  * \sa pipe_surface_reference
 129  */
 130 static INLINE void
 131 pipe_texture_reference(struct pipe_texture **ptr,
 132                        struct pipe_texture *pt)
 133 {
 134    assert(ptr);
 135
 136    if (pt)
 137       pt->refcount++;
 138
 139    if (*ptr) {
 140       struct pipe_screen *screen = (*ptr)->screen;
 141       assert(screen);
 142       screen->texture_release(screen, ptr);
 143
 144       assert(!*ptr);
 145    }
 146
 147    *ptr = pt;
 148 }
 149
 150
 151 static INLINE void
 152 pipe_texture_release(struct pipe_texture **ptr)
 153 {
 154    struct pipe_screen *screen;
 155    assert(ptr);
 156    screen = (*ptr)->screen;
 157    screen->texture_release(screen, ptr);
 158    *ptr = NULL;
 159 }
 160
 161
 162 /**
 163  * Convenience wrappers for winsys buffer functions.
 164  */
 165
 166 static INLINE struct pipe_buffer *
 167 pipe_buffer_create( struct pipe_context *pipe,
 168                     unsigned alignment, unsigned usage, unsigned size )
 169 {
 170    return pipe->winsys->buffer_create(pipe->winsys, alignment, usage, size);
 171 }
 172
 173 static INLINE struct pipe_buffer *
 174 pipe_user_buffer_create( struct pipe_context *pipe, void *ptr, unsigned size )
 175 {
 176    return pipe->winsys->user_buffer_create(pipe->winsys, ptr, size);
 177 }
 178
 179 static INLINE void
 180 pipe_buffer_destroy( struct pipe_context *pipe, struct pipe_buffer *buf )
 181 {
 182    pipe->winsys->buffer_destroy(pipe->winsys, buf);
 183 }
 184
 185 static INLINE void *
 186 pipe_buffer_map(struct pipe_context *pipe,
 187                 struct pipe_buffer *buf,
 188                 unsigned usage)
 189 {
 190    return pipe->winsys->buffer_map(pipe->winsys, buf, usage);
 191 }
 192
 193 static INLINE void
 194 pipe_buffer_unmap(struct pipe_context *pipe,
 195                   struct pipe_buffer *buf)
 196 {
 197    pipe->winsys->buffer_unmap(pipe->winsys, buf);
 198 }
 199
 200 /* XXX when we're using this everywhere, get rid of
 201  * pipe_buffer_reference() above.
 202  */
 203 static INLINE void
 204 pipe_reference_buffer(struct pipe_context *pipe,
 205                       struct pipe_buffer **ptr,
 206                       struct pipe_buffer *buf)
 207 {
 208    pipe_buffer_reference(pipe->winsys, ptr, buf);
 209 }
 210
 211
 212 #ifdef __cplusplus
 213 }
 214 #endif
 215
 216 #endif /* P_INLINES_H */