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/*
* Copyright 2009 Marek Olšák <maraeo@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE. */
#ifndef R300_SHADER_SEMANTICS_H
#define R300_SHADER_SEMANTICS_H
#define ATTR_UNUSED (-1)
#define ATTR_COLOR_COUNT 2
#define ATTR_GENERIC_COUNT 32
/* This structure contains information about what attributes are written by VS
* or read by FS. (but not both) It's much easier to work with than
* tgsi_shader_info.
*
* The variables contain indices to tgsi_shader_info semantics and those
* indices are nothing else than input/output register numbers. */
struct r300_shader_semantics {
int pos;
int psize;
int color[ATTR_COLOR_COUNT];
int bcolor[ATTR_COLOR_COUNT];
int face;
int generic[ATTR_GENERIC_COUNT];
int fog;
int wpos;
int num_generic;
};
static inline void r300_shader_semantics_reset(
struct r300_shader_semantics* info)
{
int i;
info->pos = ATTR_UNUSED;
info->psize = ATTR_UNUSED;
info->face = ATTR_UNUSED;
info->fog = ATTR_UNUSED;
info->wpos = ATTR_UNUSED;
for (i = 0; i < ATTR_COLOR_COUNT; i++) {
info->color[i] = ATTR_UNUSED;
info->bcolor[i] = ATTR_UNUSED;
}
for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
info->generic[i] = ATTR_UNUSED;
}
info->num_generic = 0;
}
#endif
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