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