cocos jpg alpha_mask png

Texture2D* StartLayer::addJpgmaskPng(const char* jpgName,const char* maskName) { CCImage *jpgImage = new CCImage(); jpgImage->initWithImageFile(jpgName); unsigned char *jpgData = jpgImage->getData(); int lenJPGPerPixel = jpgImage->getBitPerPixel() / 8; int width = jpgImage->getWidth(); int height = jpgImage->getHeight(); int len = width * height; CCImage *alphaimage = new CCImage(); alphaimage->initWithImageFile(maskName); unsigned char *alphaData = alphaimage->getData(); int lenAlphaPerPixel = alphaimage->getBitPerPixel() / 8; unsigned char *outPic = new unsigned char[width * height * 4]; int outIndex = 0; int srcIndex = 0; for (int i = 0; i < len; i++) { outPic[outIndex + 0] = jpgData[srcIndex + 0]; outPic[outIndex + 1] = jpgData[srcIndex + 1]; outPic[outIndex + 2] = jpgData[srcIndex + 2]; outPic[outIndex + 3] = alphaData[i*lenAlphaPerPixel]; srcIndex += 3; outIndex += 4; } CCTexture2D *texture = new CCTexture2D(); texture->initWithData(outPic,len * 4,Texture2D::PixelFormat::RGBA8888,width,height,Size((float)width,(float)height)); delete jpgImage; delete alphaimage; delete[] outPic; return texture; }