void SkARGB32_Blitter::blitAntiH(int x, int y, const SkAlpha antialias[],
const int16_t runs[]) {
if (fSrcA == 0) {
return;
}
uint32_t color = fPMColor;
uint32_t* device = fDevice.getAddr32(x, y);
unsigned opaqueMask = fSrcA; // if fSrcA is 0xFF, then we will catch the fast opaque case
for (;;) {
int count = runs[0];
SkASSERT(count >= 0);
if (count <= 0) {
return;
}
unsigned aa = antialias[0];
if (aa) {
if ((opaqueMask & aa) == 255) {
sk_memset32(device, color, count);
} else {
uint32_t sc = SkAlphaMulQ(color, SkAlpha255To256(aa));
fColor32Proc(device, device, count, sc);
}
}
runs += count;
antialias += count;
device += count;
}
}
virtual void filterSpan(const SkPMColor shader[], int count,
SkPMColor result[]) {
if (NULL == fColor32Proc) {
fColor32Proc = SkBlitRow::ColorProcFactory();
}
fColor32Proc(result, shader, count, fPMColor);
}
void SkARGB32_Blitter::blitRect(int x, int y, int width, int height) {
SkASSERT(x >= 0 && y >= 0 && x + width <= fDevice.width() && y + height <= fDevice.height());
if (fSrcA == 0) {
return;
}
uint32_t* device = fDevice.getAddr32(x, y);
uint32_t color = fPMColor;
size_t rowBytes = fDevice.rowBytes();
while (--height >= 0) {
fColor32Proc(device, device, width, color);
device = (uint32_t*)((char*)device + rowBytes);
}
}
void filterSpan(const SkPMColor shader[], int count, SkPMColor result[]) const override {
fColor32Proc(result, shader, count, this->getPMColor());
}
void SkARGB32_Blitter::blitH(int x, int y, int width) {
SkASSERT(x >= 0 && y >= 0 && x + width <= fDevice.width());
uint32_t* device = fDevice.getAddr32(x, y);
fColor32Proc(device, device, width, fPMColor);
}