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      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 #if defined __cplusplus
     32 extern "C" {
     33 #endif
     34 
     35 struct tgsi_src_register;
     36 struct tgsi_full_src_register;
     37 struct tgsi_full_instruction;
     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 #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(
     72    struct tgsi_full_src_register *reg,
     73    unsigned sign_mode );
     74 
     75 unsigned
     76 tgsi_util_get_inst_usage_mask(const struct tgsi_full_instruction *inst,
     77                               unsigned src_idx);
     78 
     79 struct tgsi_src_register
     80 tgsi_util_get_src_from_ind(const struct tgsi_ind_register *reg);
     81 
     82 int
     83 tgsi_util_get_texture_coord_dim(int tgsi_tex, int *shadow_or_sample);
     84 
     85 #if defined __cplusplus
     86 }
     87 #endif
     88 
     89 #endif /* TGSI_UTIL_H */
     90