C++ (Cpp) SkPacked32ToR16示例

示例#1

文件： SkXfermode.cpp 项目： Dieken/SurfaceFlinger

static uint16_t lighten_modeproc16_255(SkPMColor src, uint16_t dst) {
    SkASSERT(require_255(src));
    unsigned r = SkMax32(SkPacked32ToR16(src), SkGetPackedR16(dst));
    unsigned g = SkMax32(SkPacked32ToG16(src), SkGetPackedG16(dst));
    unsigned b = SkMax32(SkPacked32ToB16(src), SkGetPackedB16(dst));
    return SkPackRGB16(r, g, b);
}

示例#2

文件： SkXfermode.cpp 项目： Dieken/SurfaceFlinger

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));
}

示例#3

文件： SkAvoidXfermode.cpp 项目： mokacao/skia

static inline U16CPU SkBlend3216(SkPMColor src, U16CPU dst, unsigned scale) {
    SkASSERT(scale <= 32);
    scale <<= 3;

    return SkPackRGB16(SkAlphaBlend(SkPacked32ToR16(src), SkGetPackedR16(dst), scale),
        SkAlphaBlend(SkPacked32ToG16(src), SkGetPackedG16(dst), scale),
        SkAlphaBlend(SkPacked32ToB16(src), SkGetPackedB16(dst), scale));
}

示例#4

文件： SkSpriteBlitter_RGB16.cpp 项目： 03050903/skia

static inline void D16_S32A_Blend_Pixel_helper(uint16_t* dst, SkPMColor sc,
                                               unsigned src_scale) {
    uint16_t dc = *dst;
    unsigned sa = SkGetPackedA32(sc);
    unsigned dr, dg, db;

    if (255 == sa) {
        dr = SkAlphaBlend(SkPacked32ToR16(sc), SkGetPackedR16(dc), src_scale);
        dg = SkAlphaBlend(SkPacked32ToG16(sc), SkGetPackedG16(dc), src_scale);
        db = SkAlphaBlend(SkPacked32ToB16(sc), SkGetPackedB16(dc), src_scale);
    } else {
        unsigned dst_scale = 255 - SkAlphaMul(sa, src_scale);
        dr = (SkPacked32ToR16(sc) * src_scale + SkGetPackedR16(dc) * dst_scale) >> 8;
        dg = (SkPacked32ToG16(sc) * src_scale + SkGetPackedG16(dc) * dst_scale) >> 8;
        db = (SkPacked32ToB16(sc) * src_scale + SkGetPackedB16(dc) * dst_scale) >> 8;
    }
    *dst = SkPackRGB16(dr, dg, db);
}

示例#5

文件： ColorTest.cpp 项目： Frankie-666/color-emoji.skia

static inline bool S32A_D565_Blend_0(SkPMColor sc, uint16_t dc, U8CPU alpha) {
    unsigned dst_scale = 255 - SkMulDiv255Round(SkGetPackedA32(sc), alpha);
    unsigned dr = SkMulS16(SkPacked32ToR16(sc), alpha) + SkMulS16(SkGetPackedR16(dc), dst_scale);
    unsigned dg = SkMulS16(SkPacked32ToG16(sc), alpha) + SkMulS16(SkGetPackedG16(dc), dst_scale);

    unsigned rr = SkDiv255Round(dr);
    unsigned rg = SkDiv255Round(dg);

    if (rr <= 31 && rg <= 63) {
        return true;
    }
    return false;
}