zbuf.cc File Reference

#include <algorithm>
#include <cstring>
#include "MEM_guardedalloc.h"
#include "BLI_math_base.h"
#include "zbuf.h"

Go to the source code of this file.

Functions
void	zbuf_alloc_span (ZSpan *zspan, int rectx, int recty)
void	zbuf_free_span (ZSpan *zspan)
static void	zbuf_init_span (ZSpan *zspan)
static void	zbuf_add_to_span (ZSpan *zspan, const float v1[2], const float v2[2])
void	zspan_scanconvert (ZSpan *zspan, void *handle, float *v1, float *v2, float *v3, void(*func)(void *, int, int, float, float))

Detailed Description

Note

Some of this logic has been duplicated in COM_VectorBlurOperation.cc changes here may also apply also apply to that file.

Definition in file zbuf.cc.

Function Documentation

zbuf_add_to_span()

void zbuf_add_to_span ( ZSpan * zspan, const float v1[2], const float v2[2] )

static

Definition at line 60 of file zbuf.cc.

References ceil, floor, ZSpan::maxp1, ZSpan::maxp2, ZSpan::maxy1, ZSpan::maxy2, min_ff(), ZSpan::minp1, ZSpan::minp2, ZSpan::miny1, ZSpan::miny2, ZSpan::recty, ZSpan::span1, ZSpan::span2, v2, and y.

Referenced by zspan_scanconvert().

zbuf_alloc_span()

void zbuf_alloc_span	(	struct ZSpan *	zspan,
		int	rectx,
		int	recty )

Each Z-buffer has coordinates transformed to local rect coordinates, so we can simply clip.

Definition at line 33 of file zbuf.cc.

References MEM_malloc_arrayN(), ZSpan::rectx, ZSpan::recty, ZSpan::span1, and ZSpan::span2.

Referenced by RE_bake_pixels_populate(), and blender::render::texturemargin::TextureMarginMap::TextureMarginMap().

zbuf_free_span()

void zbuf_free_span

(

ZSpan *

zspan

)

Definition at line 44 of file zbuf.cc.

References MEM_SAFE_FREE, ZSpan::span1, and ZSpan::span2.

Referenced by RE_bake_pixels_populate(), and blender::render::texturemargin::TextureMarginMap::~TextureMarginMap().

zbuf_init_span()

void zbuf_init_span ( ZSpan * zspan )

static

Definition at line 53 of file zbuf.cc.

References ZSpan::maxp1, ZSpan::maxp2, ZSpan::maxy1, ZSpan::maxy2, ZSpan::minp1, ZSpan::minp2, ZSpan::miny1, ZSpan::miny2, and ZSpan::recty.

Referenced by zspan_scanconvert().

zspan_scanconvert()

void zspan_scanconvert	(	struct ZSpan *	zspan,
		void *	handle,
		float *	v1,
		float *	v2,
		float *	v3,
		void(*	func )(void *, int, int, float, float) )

Scan-convert for strand triangles, calls function for each x, y coordinate and gives UV barycentrics and z.

Definition at line 151 of file zbuf.cc.

References floor, i, max_ff(), max_ii(), ZSpan::maxp2, ZSpan::maxy1, ZSpan::maxy2, min_ff(), min_ii(), ZSpan::minp2, ZSpan::miny1, ZSpan::miny2, ZSpan::rectx, ZSpan::span1, ZSpan::span2, v, v2, x, y, zbuf_add_to_span(), and zbuf_init_span().

Referenced by blender::render::texturemargin::TextureMarginMap::rasterize_tri(), and RE_bake_pixels_populate().