Lines Matching defs:alpha
143 const uint8_t* alpha = mask.getAddr8(x, y);
149 // scale our src by the alpha value
151 int aa = alpha[i];
170 alpha += mask.fRowBytes;
176 void SkA8_Blitter::blitV(int x, int y, int height, SkAlpha alpha) {
181 unsigned sa = SkAlphaMul(fSrcA, SkAlpha255To256(alpha));
333 const uint8_t* alpha = mask.getAddr8(x, y);
341 fXfermode->xferA8(device, span, width, alpha);
344 device[i] = aa_blend8(span[i], device[i], alpha[i]);
350 alpha += mask.fRowBytes;
390 void SkA8_Coverage_Blitter::blitV(int x, int y, int height, SkAlpha alpha) {
391 if (0 == alpha) {
398 *dst = alpha;