PixelFragment Struct Reference

#include <c4d_raytrace.h>

Public Attributes
PixelFragment *	next
PixelFragment *	cluster
RayHitID	id
union {
UInt16   mask [16]
UInt32   lmask [16/2]
};
Float32	z
Float32	u
Float32	v
Vector32	col
Vector	n
Int32	subid

Member Data Documentation

next

PixelFragment* next

The next fragment in the list.

cluster

PixelFragment * cluster

If not nullptr then this pixel fragment is just a dummy for its children, stored as a linear list in 'cluster'.
The coverage masks are then automatically in the union of all children masks.

id

RayHitID id

The global RayHitID structure.

mask

UInt16 mask[16]

The coverage mask. Each pixel fragment can cover 16*16 sub-pixels at maximum.
For each Y sub-pixel line the mask is stored in PixelFragment::mask[y]. Bit 15 it the leftmost sub-pixel, 0 is at the right.
To check for the upper left sub-pixel use exists=PixelFragment::mask[0]&(1<<15).

Note

Use either mask or lmask. Both belong to the same union in the structure.

lmask

UInt32 lmask[16/2]

Provides wide access to the 16 elements of mask.

Note

Use either mask or lmask. Both belong to the same union in the structure.

union { ... }

z

Float32 z

The pixel fragment's average z value as the fragment can cover a large Z area this is just a rough Z.

u

Float32 u

The UV coordinates for the pixel fragment for it is first evaluated texture (several textures can be stacked, so only the first one can be stored here).

v

Float32 v

The UV coordinates for the pixel fragment for it is first evaluated texture (several textures can be stacked, so only the first one can be stored here).

col

Vector32 col

The color of the pixel fragment.

n

Vector n

The average normal. As the fragment can cover a 'large' area this is just a rough normal.

subid

Int32 subid

For polygon objects this is the sub-pixel displacement ID.
For perfect sphere objects this is true for the back side and false for the front side.