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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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.
*
**************************************************************************/
/*
* Functions for specifying the post-transformation vertex layout.
*
* Author:
* Brian Paul
* Keith Whitwell
*/
#include "draw/draw_private.h"
#include "draw/draw_vertex.h"
/**
* Compute the size of a vertex, in dwords/floats, to update the
* vinfo->size field.
*/
void
draw_compute_vertex_size(struct vertex_info *vinfo)
{
uint i;
vinfo->size = 0;
for (i = 0; i < vinfo->num_attribs; i++) {
switch (vinfo->emit[i]) {
case EMIT_OMIT:
break;
case EMIT_4UB:
/* fall-through */
case EMIT_1F_PSIZE:
/* fall-through */
case EMIT_1F:
vinfo->size += 1;
break;
case EMIT_2F:
vinfo->size += 2;
break;
case EMIT_3F:
vinfo->size += 3;
break;
case EMIT_4F:
vinfo->size += 4;
break;
case EMIT_ALL:
/* fall-through */
default:
assert(0);
}
}
assert(vinfo->size * 4 <= MAX_VERTEX_SIZE);
}
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