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/lk-master/lib/gfx/
A Dgfx.c371 uint32_t srca; in alpha32_add_ignore_destalpha() local
374 srca = (src >> 24) & 0xff; in alpha32_add_ignore_destalpha()
375 if (srca == 0) { in alpha32_add_ignore_destalpha()
377 } else if (srca == 255) { in alpha32_add_ignore_destalpha()
380 srca++; in alpha32_add_ignore_destalpha()
381 srcainv = (255 - srca); in alpha32_add_ignore_destalpha()
396 cres[0] = ((csrc[0] * srca) / 256) + ((cdest[0] * srcainv) / 256); in alpha32_add_ignore_destalpha()
397 cres[1] = ((csrc[1] * srca) / 256) + ((cdest[1] * srcainv) / 256); in alpha32_add_ignore_destalpha()
398 cres[2] = ((csrc[2] * srca) / 256) + ((cdest[2] * srcainv) / 256); in alpha32_add_ignore_destalpha()
400 return (srca << 24) | (cres[0] << 16) | (cres[1] << 8) | (cres[2]); in alpha32_add_ignore_destalpha()

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