zbuf.h File Reference

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Classes
struct	ZSpan

Typedefs
typedef struct ZSpan	ZSpan

Functions
void	zbuf_alloc_span (struct ZSpan *zspan, int rectx, int recty)
void	zbuf_free_span (struct ZSpan *zspan)
void	zspan_scanconvert (struct ZSpan *zspan, void *handle, float *v1, float *v2, float *v3, void(*func)(void *, int, int, float, float))

Typedef Documentation

ZSpan

typedef struct ZSpan ZSpan

Span fill in method, is also used to localize data for Z-buffering.

Function Documentation

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 32 of file zbuf.cc.

References MEM_mallocN, 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

(

struct ZSpan *

zspan

)

Definition at line 43 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().

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 160 of file zbuf.cc.

References double(), floor(), 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().