Horish_SkAntiHairBlitter Class Reference

Inheritance diagram for Horish_SkAntiHairBlitter:

Public Member Functions
SkFixed	drawCap (int x, SkFixed fy, SkFixed dy, int mod64) override
SkFixed	drawLine (int x, int stopx, SkFixed fy, SkFixed dy) override
Public Member Functions inherited from SkAntiHairBlitter
	SkAntiHairBlitter ()
virtual	~SkAntiHairBlitter ()
SkBlitter *	getBlitter () const
void	setup (SkBlitter *blitter)
virtual SkFixed	drawCap (int x, SkFixed fy, SkFixed slope, int mod64)=0
virtual SkFixed	drawLine (int x, int stopx, SkFixed fy, SkFixed slope)=0

Detailed Description

Definition at line 171 of file SkScan_Antihair.cpp.

Member Function Documentation

drawCap()

SkFixed Horish_SkAntiHairBlitter::drawCap ( int  x, SkFixed  fy, SkFixed  dy, int  mod64  )

inlineoverridevirtual

Implements SkAntiHairBlitter.

Definition at line 173 of file SkScan_Antihair.cpp.

                                                                       {
        fy += SK_Fixed1/2;
 
        int lower_y = fy >> 16;
        uint8_t  a = (uint8_t)((fy >> 8) & 0xFF);
        unsigned a0 = SmallDot6Scale(255 - a, mod64);
        unsigned a1 = SmallDot6Scale(a, mod64);
        this->getBlitter()->blitAntiV2(x, lower_y - 1, a0, a1);
 
        return fy + dy - SK_Fixed1/2;
    }

drawLine()

SkFixed Horish_SkAntiHairBlitter::drawLine ( int  x, int  stopx, SkFixed  fy, SkFixed  dy  )

inlineoverridevirtual

Implements SkAntiHairBlitter.

Definition at line 185 of file SkScan_Antihair.cpp.

                                                                        {
        SkASSERT(x < stopx);
 
        fy += SK_Fixed1/2;
        SkBlitter* blitter = this->getBlitter();
        do {
            int lower_y = fy >> 16;
            uint8_t  a = (uint8_t)((fy >> 8) & 0xFF);
            blitter->blitAntiV2(x, lower_y - 1, 255 - a, a);
            fy += dy;
        } while (++x < stopx);
 
        return fy - SK_Fixed1/2;
    }

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The documentation for this class was generated from the following file:

• third_party/skia/src/core/SkScan_Antihair.cpp