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
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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_transfer;
  34
  35 /**
  36  * Clip tile against transfer dims.
  37  *
  38  * XXX: this only clips width and height!
  39  *
  40  * \return TRUE if tile is totally clipped, FALSE otherwise
  41  */
  42 static INLINE boolean
  43 u_clip_tile(uint x, uint y, uint *w, uint *h, const struct pipe_box *box)
  44 {
  45    if (x >= box->width)
  46       return TRUE;
  47    if (y >= box->height)
  48       return TRUE;
  49    if (x + *w > box->width)
  50       *w = box->width - x;
  51    if (y + *h > box->height)
  52       *h = box->height - y;
  53    return FALSE;
  54 }
  55
  56 #ifdef __cplusplus
  57 extern "C" {
  58 #endif
  59
  60 void
  61 pipe_get_tile_raw(struct pipe_context *pipe,
  62                   struct pipe_transfer *pt,
  63                   uint x, uint y, uint w, uint h,
  64                   void *p, int dst_stride);
  65
  66 void
  67 pipe_put_tile_raw(struct pipe_context *pipe,
  68                   struct pipe_transfer *pt,
  69                   uint x, uint y, uint w, uint h,
  70                   const void *p, int src_stride);
  71
  72
  73 void
  74 pipe_get_tile_rgba(struct pipe_context *pipe,
  75                    struct pipe_transfer *pt,
  76                    uint x, uint y, uint w, uint h,
  77                    float *p);
  78
  79 void
  80 pipe_get_tile_swizzle(struct pipe_context *pipe,
  81                       struct pipe_transfer *pt,
  82                       uint x,
  83                       uint y,
  84                       uint w,
  85                       uint h,
  86                       uint swizzle_r,
  87                       uint swizzle_g,
  88                       uint swizzle_b,
  89                       uint swizzle_a,
  90                       enum pipe_format format,
  91                       float *p);
  92
  93 void
  94 pipe_put_tile_rgba(struct pipe_context *pipe,
  95                    struct pipe_transfer *pt,
  96                    uint x, uint y, uint w, uint h,
  97                    const float *p);
  98
  99
 100 void
 101 pipe_get_tile_z(struct pipe_context *pipe,
 102                 struct pipe_transfer *pt,
 103                 uint x, uint y, uint w, uint h,
 104                 uint *z);
 105
 106 void
 107 pipe_put_tile_z(struct pipe_context *pipe,
 108                 struct pipe_transfer *pt,
 109                 uint x, uint y, uint w, uint h,
 110                 const uint *z);
 111
 112 void
 113 pipe_tile_raw_to_rgba(enum pipe_format format,
 114                       void *src,
 115                       uint w, uint h,
 116                       float *dst, unsigned dst_stride);
 117
 118
 119 #ifdef __cplusplus
 120 }
 121 #endif
 122
 123 #endif