src/gallium/auxiliary/tgsi/tgsi_util.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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 VMWARE 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 #include "pipe/p_shader_tokens.h"
  32
  33 #if defined __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 struct tgsi_src_register;
  38 struct tgsi_full_src_register;
  39 struct tgsi_full_instruction;
  40
  41 void *
  42 tgsi_align_128bit(void *unaligned);
  43
  44 unsigned
  45 tgsi_util_get_src_register_swizzle(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(struct tgsi_src_register *reg,
  56                                    unsigned swizzle,
  57                                    unsigned component);
  58
  59
  60 #define TGSI_UTIL_SIGN_CLEAR    0   /* Force positive */
  61 #define TGSI_UTIL_SIGN_SET      1   /* Force negative */
  62 #define TGSI_UTIL_SIGN_TOGGLE   2   /* Negate */
  63 #define TGSI_UTIL_SIGN_KEEP     3   /* No change */
  64
  65 unsigned
  66 tgsi_util_get_full_src_register_sign_mode(
  67    const struct tgsi_full_src_register *reg,
  68    unsigned component);
  69
  70 void
  71 tgsi_util_set_full_src_register_sign_mode(struct tgsi_full_src_register *reg,
  72                                           unsigned sign_mode);
  73
  74 unsigned
  75 tgsi_util_get_inst_usage_mask(const struct tgsi_full_instruction *inst,
  76                               unsigned src_idx);
  77
  78 struct tgsi_src_register
  79 tgsi_util_get_src_from_ind(const struct tgsi_ind_register *reg);
  80
  81 int
  82 tgsi_util_get_texture_coord_dim(enum tgsi_texture_type tgsi_tex);
  83
  84 int
  85 tgsi_util_get_shadow_ref_src_index(enum tgsi_texture_type tgsi_tex);
  86
  87 boolean
  88 tgsi_is_shadow_target(enum tgsi_texture_type target);
  89
  90
  91 static inline boolean
  92 tgsi_is_msaa_target(enum tgsi_texture_type target)
  93 {
  94    return (target == TGSI_TEXTURE_2D_MSAA ||
  95            target == TGSI_TEXTURE_2D_ARRAY_MSAA);
  96 }
  97
  98 static inline bool
  99 tgsi_is_array_sampler(enum tgsi_texture_type target)
 100 {
 101    return target == TGSI_TEXTURE_1D_ARRAY ||
 102           target == TGSI_TEXTURE_SHADOW1D_ARRAY ||
 103           target == TGSI_TEXTURE_2D_ARRAY ||
 104           target == TGSI_TEXTURE_SHADOW2D_ARRAY ||
 105           target == TGSI_TEXTURE_CUBE_ARRAY ||
 106           target == TGSI_TEXTURE_SHADOWCUBE_ARRAY ||
 107           target == TGSI_TEXTURE_2D_ARRAY_MSAA;
 108 }
 109
 110 #if defined __cplusplus
 111 }
 112 #endif
 113
 114 #endif /* TGSI_UTIL_H */