src/gallium/drivers/cell/spu/spu_colorpack.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
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29
  30 #ifndef SPU_COLORPACK_H
  31 #define SPU_COLORPACK_H
  32
  33
  34 #include <spu_intrinsics.h>
  35
  36
  37 static INLINE unsigned int
  38 spu_pack_R8G8B8A8(vector float rgba)
  39 {
  40   vector unsigned int out = spu_convtu(rgba, 32);
  41
  42   out = spu_shuffle(out, out, ((vector unsigned char) {
  43                                   0, 4, 8, 12, 0, 0, 0, 0,
  44                                   0, 0, 0, 0, 0, 0, 0, 0 }) );
  45
  46   return spu_extract(out, 0);
  47 }
  48
  49
  50 static INLINE unsigned int
  51 spu_pack_A8R8G8B8(vector float rgba)
  52 {
  53   vector unsigned int out = spu_convtu(rgba, 32);
  54   out = spu_shuffle(out, out, ((vector unsigned char) {
  55                                   12, 0, 4, 8, 0, 0, 0, 0,
  56                                   0, 0, 0, 0, 0, 0, 0, 0}) );
  57   return spu_extract(out, 0);
  58 }
  59
  60
  61 static INLINE unsigned int
  62 spu_pack_B8G8R8A8(vector float rgba)
  63 {
  64   vector unsigned int out = spu_convtu(rgba, 32);
  65   out = spu_shuffle(out, out, ((vector unsigned char) {
  66                                   8, 4, 0, 12, 0, 0, 0, 0,
  67                                   0, 0, 0, 0, 0, 0, 0, 0}) );
  68   return spu_extract(out, 0);
  69 }
  70
  71
  72 static INLINE unsigned int
  73 spu_pack_color_shuffle(vector float rgba, vector unsigned char shuffle)
  74 {
  75   vector unsigned int out = spu_convtu(rgba, 32);
  76   out = spu_shuffle(out, out, shuffle);
  77   return spu_extract(out, 0);
  78 }
  79
  80
  81 static INLINE vector float
  82 spu_unpack_color(uint color)
  83 {
  84    vector unsigned int color_u4 = spu_splats(color);
  85    color_u4 = spu_shuffle(color_u4, color_u4,
  86                           ((vector unsigned char) {
  87                              0, 0, 0, 0,
  88                              5, 5, 5, 5,
  89                              10, 10, 10, 10,
  90                              15, 15, 15, 15}) );
  91    return spu_convtf(color_u4, 32);
  92 }
  93
  94
  95 static INLINE vector float
  96 spu_unpack_A8R8G8B8(uint color)
  97 {
  98    vector unsigned int color_u4 = spu_splats(color);
  99    color_u4 = spu_shuffle(color_u4, color_u4,
 100                           ((vector unsigned char) {
 101                              5, 5, 5, 5,
 102                              10, 10, 10, 10,
 103                              15, 15, 15, 15,
 104                              0, 0, 0, 0}) );
 105
 106    return spu_convtf(color_u4, 32);
 107 }
 108
 109
 110 #endif /* SPU_COLORPACK_H */