src/gallium/auxiliary/util/p_tile.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
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   9  * without limitation the rights to use, copy, modify, merge, publish,
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  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
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef P_TILE_H
  29 #define P_TILE_H
  30
  31 #include "pipe/p_compiler.h"
  32
  33 struct pipe_context;
  34 struct pipe_surface;
  35
  36
  37 /**
  38  * Clip tile against surface dims.
  39  * \return TRUE if tile is totally clipped, FALSE otherwise
  40  */
  41 static INLINE boolean
  42 pipe_clip_tile(uint x, uint y, uint *w, uint *h, const struct pipe_surface *ps)
  43 {
  44    if (x >= ps->width)
  45       return TRUE;
  46    if (y >= ps->height)
  47       return TRUE;
  48    if (x + *w > ps->width)
  49       *w = ps->width - x;
  50    if (y + *h > ps->height)
  51       *h = ps->height - y;
  52    return FALSE;
  53 }
  54
  55 #ifdef __cplusplus
  56 extern "C" {
  57 #endif
  58
  59 void
  60 pipe_get_tile_raw(struct pipe_context *pipe,
  61                   struct pipe_surface *ps,
  62                   uint x, uint y, uint w, uint h,
  63                   void *p, int dst_stride);
  64
  65 void
  66 pipe_put_tile_raw(struct pipe_context *pipe,
  67                   struct pipe_surface *ps,
  68                   uint x, uint y, uint w, uint h,
  69                   const void *p, int src_stride);
  70
  71
  72 void
  73 pipe_get_tile_rgba(struct pipe_context *pipe,
  74                    struct pipe_surface *ps,
  75                    uint x, uint y, uint w, uint h,
  76                    float *p);
  77
  78 void
  79 pipe_put_tile_rgba(struct pipe_context *pipe,
  80                    struct pipe_surface *ps,
  81                    uint x, uint y, uint w, uint h,
  82                    const float *p);
  83
  84
  85 void
  86 pipe_get_tile_z(struct pipe_context *pipe,
  87                 struct pipe_surface *ps,
  88                 uint x, uint y, uint w, uint h,
  89                 uint *z);
  90
  91 void
  92 pipe_put_tile_z(struct pipe_context *pipe,
  93                 struct pipe_surface *ps,
  94                 uint x, uint y, uint w, uint h,
  95                 const uint *z);
  96
  97 #ifdef __cplusplus
  98 }
  99 #endif
 100
 101 #endif