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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/** \file
* \ingroup render
*/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
/* span fill in method, is also used to localize data for zbuffering */
typedef struct ZSpan {
int rectx, recty; /* range for clipping */
int miny1, maxy1, miny2, maxy2; /* actual filled in range */
const float *minp1, *maxp1, *minp2, *maxp2; /* vertex pointers detect min/max range in */
float *span1, *span2;
} ZSpan;
void zbuf_alloc_span(struct ZSpan *zspan, int rectx, int recty);
void zbuf_free_span(struct ZSpan *zspan);
void zspan_scanconvert(struct ZSpan *zpan,
void *handle,
float *v1,
float *v2,
float *v3,
void (*func)(void *, int, int, float, float));
#ifdef __cplusplus
}
#endif
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