src/gallium/auxiliary/util/u_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
   8  * "Software"), to deal in the Software without restriction, including
   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 #include "pipe/p_format.h"
  33 #include "pipe/p_state.h"
  34
  35 struct pipe_context;
  36 struct pipe_transfer;
  37
  38 /**
  39  * Clip tile against transfer dims.
  40  *
  41  * XXX: this only clips width and height!
  42  *
  43  * \return TRUE if tile is totally clipped, FALSE otherwise
  44  */
  45 static INLINE boolean
  46 u_clip_tile(uint x, uint y, uint *w, uint *h, const struct pipe_box *box)
  47 {
  48    if (x >= box->width)
  49       return TRUE;
  50    if (y >= box->height)
  51       return TRUE;
  52    if (x + *w > box->width)
  53       *w = box->width - x;
  54    if (y + *h > box->height)
  55       *h = box->height - y;
  56    return FALSE;
  57 }
  58
  59 #ifdef __cplusplus
  60 extern "C" {
  61 #endif
  62
  63 void
  64 pipe_get_tile_raw(struct pipe_context *pipe,
  65                   struct pipe_transfer *pt,
  66                   uint x, uint y, uint w, uint h,
  67                   void *p, int dst_stride);
  68
  69 void
  70 pipe_put_tile_raw(struct pipe_context *pipe,
  71                   struct pipe_transfer *pt,
  72                   uint x, uint y, uint w, uint h,
  73                   const void *p, int src_stride);
  74
  75
  76 void
  77 pipe_get_tile_rgba(struct pipe_context *pipe,
  78                    struct pipe_transfer *pt,
  79                    uint x, uint y, uint w, uint h,
  80                    float *p);
  81
  82 void
  83 pipe_get_tile_rgba_format(struct pipe_context *pipe,
  84                           struct pipe_transfer *pt,
  85                           uint x, uint y, uint w, uint h,
  86                           enum pipe_format format,
  87                           float *p);
  88
  89 void
  90 pipe_put_tile_rgba(struct pipe_context *pipe,
  91                    struct pipe_transfer *pt,
  92                    uint x, uint y, uint w, uint h,
  93                    const float *p);
  94
  95 void
  96 pipe_put_tile_rgba_format(struct pipe_context *pipe,
  97                           struct pipe_transfer *pt,
  98                           uint x, uint y, uint w, uint h,
  99                           enum pipe_format format,
 100                           const float *p);
 101
 102
 103 void
 104 pipe_get_tile_z(struct pipe_context *pipe,
 105                 struct pipe_transfer *pt,
 106                 uint x, uint y, uint w, uint h,
 107                 uint *z);
 108
 109 void
 110 pipe_put_tile_z(struct pipe_context *pipe,
 111                 struct pipe_transfer *pt,
 112                 uint x, uint y, uint w, uint h,
 113                 const uint *z);
 114
 115 void
 116 pipe_tile_raw_to_rgba(enum pipe_format format,
 117                       void *src,
 118                       uint w, uint h,
 119                       float *dst, unsigned dst_stride);
 120
 121
 122 #ifdef __cplusplus
 123 }
 124 #endif
 125
 126 #endif