static void generateMask(const SkMask& mask, const SkPath& path, const SkMaskGamma::PreBlend& maskPreBlend) { SkPaint paint; int srcW = mask.fBounds.width(); int srcH = mask.fBounds.height(); int dstW = srcW; int dstH = srcH; int dstRB = mask.fRowBytes; SkMatrix matrix; matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft), -SkIntToScalar(mask.fBounds.fTop)); paint.setAntiAlias(SkMask::kBW_Format != mask.fFormat); switch (mask.fFormat) { case SkMask::kBW_Format: dstRB = 0; // signals we need a copy break; case SkMask::kA8_Format: break; case SkMask::kLCD16_Format: // TODO: trigger off LCD orientation dstW = 4*dstW - 8; matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft + 1), -SkIntToScalar(mask.fBounds.fTop)); matrix.postScale(SkIntToScalar(4), SK_Scalar1); dstRB = 0; // signals we need a copy break; default: SkDEBUGFAIL("unexpected mask format"); } SkRasterClip clip; clip.setRect(SkIRect::MakeWH(dstW, dstH)); const SkImageInfo info = SkImageInfo::MakeA8(dstW, dstH); SkAutoPixmapStorage dst; if (0 == dstRB) { if (!dst.tryAlloc(info)) { // can't allocate offscreen, so empty the mask and return sk_bzero(mask.fImage, mask.computeImageSize()); return; } } else { dst.reset(info, mask.fImage, dstRB); } sk_bzero(dst.writable_addr(), dst.getSafeSize()); SkDraw draw; draw.fDst = dst; draw.fRC = &clip; draw.fClip = &clip.bwRgn(); draw.fMatrix = &matrix; draw.drawPath(path, paint); switch (mask.fFormat) { case SkMask::kBW_Format: packA8ToA1(mask, dst.addr8(0, 0), dst.rowBytes()); break; case SkMask::kA8_Format: if (maskPreBlend.isApplicable()) { applyLUTToA8Mask(mask, maskPreBlend.fG); } break; case SkMask::kLCD16_Format: if (maskPreBlend.isApplicable()) { pack4xHToLCD16<true>(dst, mask, maskPreBlend); } else { pack4xHToLCD16<false>(dst, mask, maskPreBlend); } break; default: break; } }
static void generateMask(const SkMask& mask, const SkPath& path, const SkMaskGamma::PreBlend& maskPreBlend) { SkBitmap::Config config; SkPaint paint; int srcW = mask.fBounds.width(); int srcH = mask.fBounds.height(); int dstW = srcW; int dstH = srcH; int dstRB = mask.fRowBytes; SkMatrix matrix; matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft), -SkIntToScalar(mask.fBounds.fTop)); if (SkMask::kBW_Format == mask.fFormat) { config = SkBitmap::kA1_Config; paint.setAntiAlias(false); } else { config = SkBitmap::kA8_Config; paint.setAntiAlias(true); switch (mask.fFormat) { case SkMask::kA8_Format: break; case SkMask::kLCD16_Format: case SkMask::kLCD32_Format: // TODO: trigger off LCD orientation dstW *= 3; matrix.postScale(SkIntToScalar(3), SK_Scalar1); dstRB = 0; // signals we need a copy break; default: SkDEBUGFAIL("unexpected mask format"); } } SkRasterClip clip; clip.setRect(SkIRect::MakeWH(dstW, dstH)); SkBitmap bm; bm.setConfig(config, dstW, dstH, dstRB); if (0 == dstRB) { if (!bm.allocPixels()) { // can't allocate offscreen, so empty the mask and return sk_bzero(mask.fImage, mask.computeImageSize()); return; } bm.lockPixels(); } else { bm.setPixels(mask.fImage); } sk_bzero(bm.getPixels(), bm.getSafeSize()); SkDraw draw; draw.fRC = &clip; draw.fClip = &clip.bwRgn(); draw.fMatrix = &matrix; draw.fBitmap = &bm; draw.drawPath(path, paint); switch (mask.fFormat) { case SkMask::kA8_Format: if (maskPreBlend.isApplicable()) { applyLUTToA8Mask(mask, maskPreBlend.fG); } break; case SkMask::kLCD16_Format: if (maskPreBlend.isApplicable()) { pack3xHToLCD16<true>(bm, mask, maskPreBlend); } else { pack3xHToLCD16<false>(bm, mask, maskPreBlend); } break; case SkMask::kLCD32_Format: if (maskPreBlend.isApplicable()) { pack3xHToLCD32<true>(bm, mask, maskPreBlend); } else { pack3xHToLCD32<false>(bm, mask, maskPreBlend); } break; default: break; } }