SkEmbossMask.cpp File Reference

#include "src/effects/SkEmbossMask.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkTypes.h"
#include "include/private/base/SkFixed.h"
#include "include/private/base/SkTo.h"
#include "src/base/SkMathPriv.h"
#include "src/core/SkMask.h"
#include <algorithm>
#include <cstddef>
#include <cstdint>

Go to the source code of this file.

Macros
#define	kDelta   32

Functions
static int	nonzero_to_one (int x)
static int	neq_to_one (int x, int max)
static int	neq_to_mask (int x, int max)
static unsigned	div255 (unsigned x)

Macro Definition Documentation

kDelta

#define kDelta   32

Definition at line 53 of file SkEmbossMask.cpp.

Function Documentation

div255()

static unsigned div255 ( unsigned  x )

inlinestatic

Definition at line 48 of file SkEmbossMask.cpp.

                                          {
    SkASSERT(x <= (255*255));
    return x * ((1 << 24) / 255) >> 24;
}

neq_to_mask()

static int neq_to_mask ( int  x, int  max  )

inlinestatic

Definition at line 39 of file SkEmbossMask.cpp.

                                              {
#if 0
    return -(x != max);
#else
    SkASSERT(x >= 0 && x <= max);
    return (x - max) >> 31;
#endif
}

neq_to_one()

static int neq_to_one ( int  x, int  max  )

inlinestatic

Definition at line 30 of file SkEmbossMask.cpp.

                                             {
#if 0
    return x != max;
#else
    SkASSERT(x >= 0 && x <= max);
    return ((unsigned)(x - max)) >> 31;
#endif
}

nonzero_to_one()

static int nonzero_to_one ( int  x )

inlinestatic

Definition at line 22 of file SkEmbossMask.cpp.

                                        {
#if 0
    return x != 0;
#else
    return ((unsigned)(x | -x)) >> 31;
#endif
}