e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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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 Z-buffering. */
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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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/**
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* Each Z-buffer has coordinates transformed to local rect coordinates, so we can simply clip.
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*/
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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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/**
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* Scan-convert for strand triangles, calls function for each x, y coordinate
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* and gives UV barycentrics and z.
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*/
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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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