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,
  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_TILE_H
  29 #define P_TILE_H
  30
  31 #include "pipe/p_compiler.h"
  32
  33 struct pipe_transfer;
  34
  35
  36 /**
  37  * Clip tile against transfer dims.
  38  * \return TRUE if tile is totally clipped, FALSE otherwise
  39  */
  40 static INLINE boolean
  41 pipe_clip_tile(uint x, uint y, uint *w, uint *h, const struct pipe_transfer *pt)
  42 {
  43    if (x >= pt->width)
  44       return TRUE;
  45    if (y >= pt->height)
  46       return TRUE;
  47    if (x + *w > pt->width)
  48       *w = pt->width - x;
  49    if (y + *h > pt->height)
  50       *h = pt->height - y;
  51    return FALSE;
  52 }
  53
  54 #ifdef __cplusplus
  55 extern "C" {
  56 #endif
  57
  58 void
  59 pipe_get_tile_raw(struct pipe_transfer *pt,
  60                   uint x, uint y, uint w, uint h,
  61                   void *p, int dst_stride);
  62
  63 void
  64 pipe_put_tile_raw(struct pipe_transfer *pt,
  65                   uint x, uint y, uint w, uint h,
  66                   const void *p, int src_stride);
  67
  68
  69 void
  70 pipe_get_tile_rgba(struct pipe_transfer *pt,
  71                    uint x, uint y, uint w, uint h,
  72                    float *p);
  73
  74 void
  75 pipe_get_tile_swizzle(struct pipe_transfer *pt,
  76                       uint x,
  77                       uint y,
  78                       uint w,
  79                       uint h,
  80                       uint swizzle_r,
  81                       uint swizzle_g,
  82                       uint swizzle_b,
  83                       uint swizzle_a,
  84                       enum pipe_format format,
  85                       float *p);
  86
  87 void
  88 pipe_put_tile_rgba(struct pipe_transfer *pt,
  89                    uint x, uint y, uint w, uint h,
  90                    const float *p);
  91
  92
  93 void
  94 pipe_get_tile_z(struct pipe_transfer *pt,
  95                 uint x, uint y, uint w, uint h,
  96                 uint *z);
  97
  98 void
  99 pipe_put_tile_z(struct pipe_transfer *pt,
 100                 uint x, uint y, uint w, uint h,
 101                 const uint *z);
 102
 103 void
 104 pipe_tile_raw_to_rgba(enum pipe_format format,
 105                       void *src,
 106                       uint w, uint h,
 107                       float *dst, unsigned dst_stride);
 108
 109
 110 #ifdef __cplusplus
 111 }
 112 #endif
 113
 114 #endif