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