Example #1
0
static SkPMColor mult_modeproc(SkPMColor src, SkPMColor dst) {
    int a = SkAlphaMulAlpha(SkGetPackedA32(src), SkGetPackedA32(dst));
    int r = SkAlphaMulAlpha(SkGetPackedR32(src), SkGetPackedR32(dst));
    int g = SkAlphaMulAlpha(SkGetPackedG32(src), SkGetPackedG32(dst));
    int b = SkAlphaMulAlpha(SkGetPackedB32(src), SkGetPackedB32(dst));
    return SkPackARGB32(a, r, g, b);
}
Example #2
0
static uint16_t srcatop_modeproc16(SkPMColor src, uint16_t dst) {
    unsigned isa = 255 - SkGetPackedA32(src);
    
    return SkPackRGB16(
           SkPacked32ToR16(src) + SkAlphaMulAlpha(SkGetPackedR16(dst), isa),
           SkPacked32ToG16(src) + SkAlphaMulAlpha(SkGetPackedG16(dst), isa),
           SkPacked32ToB16(src) + SkAlphaMulAlpha(SkGetPackedB16(dst), isa));
}
Example #3
0
// kColorBurn_Mode
static inline int colorburn_byte(int sc, int dc, int sa, int da) {
    int rc;
    if (dc == da) {
        rc = sa * da + sc * (255 - da) + dc * (255 - sa);
    } else if (0 == sc) {
        return SkAlphaMulAlpha(dc, 255 - sa);
    } else {
        int tmp = (da - dc) * sa / sc;
        rc = sa * (da - ((da < tmp) ? da : tmp))
            + sc * (255 - da) + dc * (255 - sa);
    }
    return clamp_div255round(rc);
}
Example #4
0
// kColorDodge_Mode
static inline int colordodge_byte(int sc, int dc, int sa, int da) {
    int diff = sa - sc;
    int rc;
    if (0 == dc) {
        return SkAlphaMulAlpha(sc, 255 - da);
    } else if (0 == diff) {
        rc = sa * da + sc * (255 - da) + dc * (255 - sa);
    } else {
        diff = dc * sa / diff;
        rc = sa * ((da < diff) ? da : diff) + sc * (255 - da) + dc * (255 - sa);
    }
    return clamp_div255round(rc);
}
Example #5
0
//  kXor_Mode   [Sa + Da - 2 * Sa * Da, Sc * (1 - Da) + (1 - Sa) * Dc]
static SkPMColor xor_modeproc(SkPMColor src, SkPMColor dst) {
    unsigned sa = SkGetPackedA32(src);
    unsigned da = SkGetPackedA32(dst);
    unsigned isa = 255 - sa;
    unsigned ida = 255 - da;

    return SkPackARGB32(sa + da - (SkAlphaMulAlpha(sa, da) << 1),
                        SkAlphaMulAlpha(ida, SkGetPackedR32(src)) +
                            SkAlphaMulAlpha(isa, SkGetPackedR32(dst)),
                        SkAlphaMulAlpha(ida, SkGetPackedG32(src)) +
                            SkAlphaMulAlpha(isa, SkGetPackedG32(dst)),
                        SkAlphaMulAlpha(ida, SkGetPackedB32(src)) +
                            SkAlphaMulAlpha(isa, SkGetPackedB32(dst)));
}
Example #6
0
static SkPMColor lighten_modeproc(SkPMColor src, SkPMColor dst) {
    unsigned sa = SkGetPackedA32(src);
    unsigned da = SkGetPackedA32(dst);
    unsigned src_scale = SkAlpha255To256(255 - sa);
    unsigned dst_scale = SkAlpha255To256(255 - da);
    
    unsigned ra = sa + da - SkAlphaMulAlpha(sa, da);
    unsigned rr = lighten_p(SkGetPackedR32(src), SkGetPackedR32(dst),
                            src_scale, dst_scale);
    unsigned rg = lighten_p(SkGetPackedG32(src), SkGetPackedG32(dst),
                            src_scale, dst_scale);
    unsigned rb = lighten_p(SkGetPackedB32(src), SkGetPackedB32(dst),
                            src_scale, dst_scale);

    return SkPackARGB32(ra, SkFastMin32(rr, ra),
                        SkFastMin32(rg, ra), SkFastMin32(rb, ra));
}
Example #7
0
    virtual void xferA8(SK_RESTRICT SkAlpha dst[],
                        const SK_RESTRICT SkPMColor[], int count,
                        const SK_RESTRICT SkAlpha aa[]) {
        SkASSERT(dst && count >= 0);

        if (NULL == aa) {
            memset(dst, 0, count);
        } else {
            for (int i = count - 1; i >= 0; --i) {
                unsigned a = aa[i];
                if (0xFF == a) {
                    dst[i] = 0;
                } else if (0 != a) {
                    dst[i] = SkAlphaMulAlpha(dst[i], 255 - a);
                }
            }
        }
    }
Example #8
0
//  kSrcATop_Mode,  //!< [Da, Sc * Da + (1 - Sa) * Dc]
static SkPMColor srcatop_modeproc(SkPMColor src, SkPMColor dst) {
    unsigned sa = SkGetPackedA32(src);
    unsigned da = SkGetPackedA32(dst);
    unsigned isa = 255 - sa;

    return SkPackARGB32(da,
                        SkAlphaMulAlpha(da, SkGetPackedR32(src)) +
                            SkAlphaMulAlpha(isa, SkGetPackedR32(dst)),
                        SkAlphaMulAlpha(da, SkGetPackedG32(src)) +
                            SkAlphaMulAlpha(isa, SkGetPackedG32(dst)),
                        SkAlphaMulAlpha(da, SkGetPackedB32(src)) +
                            SkAlphaMulAlpha(isa, SkGetPackedB32(dst)));
}
Example #9
0
static inline int screen_byte(int a, int b) {
    return a + b - SkAlphaMulAlpha(a, b);
}
Example #10
0
static inline int srcover_byte(int a, int b) {
    return a + b - SkAlphaMulAlpha(a, b);
}