4786fbe774
The only remaining code in source/blender that must be compiled as C is now datatoc generated code and the DNA defaults that use designated initializers. Pull Request: https://projects.blender.org/blender/blender/pulls/134469
36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Authors
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
/** \file
|
|
* \ingroup render
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
/** Span fill in method, is also used to localize data for Z-buffering. */
|
|
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;
|
|
};
|
|
|
|
/**
|
|
* Each Z-buffer has coordinates transformed to local rect coordinates, so we can simply clip.
|
|
*/
|
|
void zbuf_alloc_span(struct ZSpan *zspan, int rectx, int recty);
|
|
void zbuf_free_span(struct ZSpan *zspan);
|
|
|
|
/**
|
|
* Scan-convert for strand triangles, calls function for each x, y coordinate
|
|
* and gives UV barycentrics and z.
|
|
*/
|
|
void zspan_scanconvert(struct ZSpan *zspan,
|
|
void *handle,
|
|
float *v1,
|
|
float *v2,
|
|
float *v3,
|
|
void (*func)(void *, int, int, float, float));
|