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 /**
  42  * Convenience wrappers for screen buffer functions.
  43  */
  44
  45 static INLINE struct pipe_buffer *
  46 pipe_buffer_create( struct pipe_screen *screen,
  47                     unsigned alignment, unsigned usage, unsigned size )
  48 {
  49    return screen->buffer_create(screen, alignment, usage, size);
  50 }
  51
  52 static INLINE struct pipe_buffer *
  53 pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size )
  54 {
  55    return screen->user_buffer_create(screen, ptr, size);
  56 }
  57
  58 static INLINE void *
  59 pipe_buffer_map(struct pipe_screen *screen,
  60                 struct pipe_buffer *buf,
  61                 unsigned usage)
  62 {
  63    if(screen->buffer_map_range) {
  64       unsigned offset = 0;
  65       unsigned length = buf->size;
  66       return screen->buffer_map_range(screen, buf, offset, length, usage);
  67    }
  68    else
  69       return screen->buffer_map(screen, buf, usage);
  70 }
  71
  72 static INLINE void
  73 pipe_buffer_unmap(struct pipe_screen *screen,
  74                   struct pipe_buffer *buf)
  75 {
  76    screen->buffer_unmap(screen, buf);
  77 }
  78
  79 static INLINE void *
  80 pipe_buffer_map_range(struct pipe_screen *screen,
  81                 struct pipe_buffer *buf,
  82                 unsigned offset,
  83                 unsigned length,
  84                 unsigned usage)
  85 {
  86    assert(offset < buf->size);
  87    assert(offset + length <= buf->size);
  88    if(screen->buffer_map_range)
  89       return screen->buffer_map_range(screen, buf, offset, length, usage);
  90    else {
  91       uint8_t *map;
  92       map = screen->buffer_map(screen, buf, usage);
  93       return map ? map + offset : NULL;
  94    }
  95 }
  96
  97 static INLINE void
  98 pipe_buffer_flush_mapped_range(struct pipe_screen *screen,
  99                                struct pipe_buffer *buf,
 100                                unsigned offset,
 101                                unsigned length)
 102 {
 103    assert(offset < buf->size);
 104    assert(offset + length <= buf->size);
 105    if(screen->buffer_flush_mapped_range)
 106       screen->buffer_flush_mapped_range(screen, buf, offset, length);
 107 }
 108
 109 static INLINE void
 110 pipe_buffer_write(struct pipe_screen *screen,
 111                   struct pipe_buffer *buf,
 112                   unsigned offset, unsigned size,
 113                   const void *data)
 114 {
 115    uint8_t *map;
 116
 117    assert(offset < buf->size);
 118    assert(offset + size <= buf->size);
 119
 120    map = pipe_buffer_map_range(screen, buf, offset, size, PIPE_BUFFER_USAGE_CPU_WRITE);
 121    assert(map);
 122    if(map) {
 123       memcpy(map, data, size);
 124       pipe_buffer_flush_mapped_range(screen, buf, offset, size);
 125       pipe_buffer_unmap(screen, buf);
 126    }
 127 }
 128
 129 static INLINE void
 130 pipe_buffer_read(struct pipe_screen *screen,
 131                  struct pipe_buffer *buf,
 132                  unsigned offset, unsigned size,
 133                  void *data)
 134 {
 135    uint8_t *map;
 136
 137    assert(offset < buf->size);
 138    assert(offset + size <= buf->size);
 139
 140    map = pipe_buffer_map_range(screen, buf, offset, size, PIPE_BUFFER_USAGE_CPU_READ);
 141    assert(map);
 142    if(map) {
 143       memcpy(data, map, size);
 144       pipe_buffer_unmap(screen, buf);
 145    }
 146 }
 147
 148
 149 #ifdef __cplusplus
 150 }
 151 #endif
 152
 153 #endif /* P_INLINES_H */