src/gallium/auxiliary/tgsi/tgsi_util.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 TGSI_UTIL_H
  29 #define TGSI_UTIL_H
  30
  31 #if defined __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 struct tgsi_src_register;
  36 struct tgsi_src_register_ext_swz;
  37 struct tgsi_full_src_register;
  38
  39 void *
  40 tgsi_align_128bit(
  41    void *unaligned );
  42
  43 unsigned
  44 tgsi_util_get_src_register_swizzle(
  45    const struct tgsi_src_register *reg,
  46    unsigned component );
  47
  48
  49 unsigned
  50 tgsi_util_get_full_src_register_swizzle(
  51    const struct tgsi_full_src_register *reg,
  52    unsigned component );
  53
  54 void
  55 tgsi_util_set_src_register_swizzle(
  56    struct tgsi_src_register *reg,
  57    unsigned swizzle,
  58    unsigned component );
  59
  60 unsigned
  61 tgsi_util_get_src_register_extnegate(
  62    const struct tgsi_src_register_ext_swz *reg,
  63    unsigned component );
  64
  65 void
  66 tgsi_util_set_src_register_extnegate(
  67    struct tgsi_src_register_ext_swz *reg,
  68    unsigned negate,
  69    unsigned component );
  70
  71 #define TGSI_UTIL_SIGN_CLEAR    0   /* Force positive */
  72 #define TGSI_UTIL_SIGN_SET      1   /* Force negative */
  73 #define TGSI_UTIL_SIGN_TOGGLE   2   /* Negate */
  74 #define TGSI_UTIL_SIGN_KEEP     3   /* No change */
  75
  76 unsigned
  77 tgsi_util_get_full_src_register_sign_mode(
  78    const struct tgsi_full_src_register *reg,
  79    unsigned component );
  80
  81 void
  82 tgsi_util_set_full_src_register_sign_mode(
  83    struct tgsi_full_src_register *reg,
  84    unsigned sign_mode );
  85
  86 #if defined __cplusplus
  87 }
  88 #endif
  89
  90 #endif /* TGSI_UTIL_H */