Home | History | Annotate | Download | only in r300
      1 /*
      2  * Copyright 2009 Marek Olk <maraeo (at) gmail.com>
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * on the rights to use, copy, modify, merge, publish, distribute, sub
      8  * license, and/or sell copies of the Software, and to permit persons to whom
      9  * the Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
     19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
     22 
     23 #ifndef R300_SHADER_SEMANTICS_H
     24 #define R300_SHADER_SEMANTICS_H
     25 
     26 #define ATTR_UNUSED             (-1)
     27 #define ATTR_COLOR_COUNT        2
     28 #define ATTR_GENERIC_COUNT      32
     29 
     30 /* This structure contains information about what attributes are written by VS
     31  * or read by FS. (but not both) It's much easier to work with than
     32  * tgsi_shader_info.
     33  *
     34  * The variables contain indices to tgsi_shader_info semantics and those
     35  * indices are nothing else than input/output register numbers. */
     36 struct r300_shader_semantics {
     37     int pos;
     38     int psize;
     39     int color[ATTR_COLOR_COUNT];
     40     int bcolor[ATTR_COLOR_COUNT];
     41     int face;
     42     int generic[ATTR_GENERIC_COUNT];
     43     int fog;
     44     int wpos;
     45 };
     46 
     47 static INLINE void r300_shader_semantics_reset(
     48     struct r300_shader_semantics* info)
     49 {
     50     int i;
     51 
     52     info->pos = ATTR_UNUSED;
     53     info->psize = ATTR_UNUSED;
     54     info->face = ATTR_UNUSED;
     55     info->fog = ATTR_UNUSED;
     56     info->wpos = ATTR_UNUSED;
     57 
     58     for (i = 0; i < ATTR_COLOR_COUNT; i++) {
     59         info->color[i] = ATTR_UNUSED;
     60         info->bcolor[i] = ATTR_UNUSED;
     61     }
     62 
     63     for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
     64         info->generic[i] = ATTR_UNUSED;
     65     }
     66 }
     67 
     68 #endif
     69