#include "image_etc.h" #include "image.h" #include "rg_etc1.h" #include "print_string.h" #include "os/copymem.h" static void _decompress_etc(Image *p_img) { ERR_FAIL_COND(p_img->get_format()!=Image::FORMAT_ETC); int imgw = p_img->get_width(); int imgh = p_img->get_height(); DVector<uint8_t> src=p_img->get_data(); DVector<uint8_t> dst; DVector<uint8_t>::Read r = src.read(); int mmc=p_img->get_mipmaps(); for(int i=0;i<=mmc;i++) { dst.resize(dst.size()+imgw*imgh*3); const uint8_t *srcbr=&r[p_img->get_mipmap_offset(i)]; DVector<uint8_t>::Write w = dst.write(); uint8_t *wptr = &w[dst.size()-imgw*imgh*3]; int bw=MAX(imgw/4,1); int bh=MAX(imgh/4,1); for(int y=0;y<bh;y++) { for(int x=0;x<bw;x++) { uint8_t block[4*4*4]; rg_etc1::unpack_etc1_block(srcbr,(unsigned int*)block); srcbr+=8; int maxx=MIN(imgw,4); int maxy=MIN(imgh,4); for(int yy=0;yy<maxy;yy++) { for(int xx=0;xx<maxx;xx++) { uint32_t src_ofs = (yy*4+xx)*4; uint32_t dst_ofs = ((y*4+yy)*imgw+x*4+xx)*3; wptr[dst_ofs+0]=block[src_ofs+0]; wptr[dst_ofs+1]=block[src_ofs+1]; wptr[dst_ofs+2]=block[src_ofs+2]; } } } } imgw=MAX(1,imgw/2); imgh=MAX(1,imgh/2); } r=DVector<uint8_t>::Read(); //print_line("Re Creating ETC into regular image: w "+itos(p_img->get_width())+" h "+itos(p_img->get_height())+" mm "+itos(p_img->get_mipmaps())); *p_img=Image(p_img->get_width(),p_img->get_height(),p_img->get_mipmaps(),Image::FORMAT_RGB,dst); if (p_img->get_mipmaps()) p_img->generate_mipmaps(-1,true); } static void _compress_etc(Image *p_img) { Image img = *p_img; int imgw=img.get_width(),imgh=img.get_height(); ERR_FAIL_COND( nearest_power_of_2(imgw)!=imgw || nearest_power_of_2(imgh)!=imgh ); if (img.get_format()!=Image::FORMAT_RGB) img.convert(Image::FORMAT_RGB); int mmc=img.get_mipmaps(); if (mmc==0) img.generate_mipmaps(); // force mipmaps, so it works on most hardware DVector<uint8_t> res_data; DVector<uint8_t> dst_data; DVector<uint8_t>::Read r = img.get_data().read(); int mc=0; rg_etc1::etc1_pack_params pp; pp.m_quality=rg_etc1::cLowQuality; for(int i=0;i<=mmc;i++) { int bw=MAX(imgw/4,1); int bh=MAX(imgh/4,1); const uint8_t *src = &r[img.get_mipmap_offset(i)]; int mmsize = MAX(bw,1)*MAX(bh,1)*8; dst_data.resize(dst_data.size()+mmsize); DVector<uint8_t>::Write w=dst_data.write(); uint8_t *dst = &w[dst_data.size()-mmsize]; // print_line("bh: "+itos(bh)+" bw: "+itos(bw)); for(int y=0;y<bh;y++) { for(int x=0;x<bw;x++) { // print_line("x: "+itos(x)+" y: "+itos(y)); uint8_t block[4*4*4]; zeromem(block,4*4*4); uint8_t cblock[8]; int maxy = MIN(imgh,4); int maxx = MIN(imgw,4); for(int yy=0;yy<maxy;yy++) { for(int xx=0;xx<maxx;xx++) { uint32_t dst_ofs = (yy*4+xx)*4; uint32_t src_ofs = ((y*4+yy)*imgw+x*4+xx)*3; block[dst_ofs+0]=src[src_ofs+0]; block[dst_ofs+1]=src[src_ofs+1]; block[dst_ofs+2]=src[src_ofs+2]; block[dst_ofs+3]=255; } } rg_etc1::pack_etc1_block(cblock, (const unsigned int*)block, pp); for(int j=0;j<8;j++) { dst[j]=cblock[j]; } dst+=8; } } imgw=MAX(1,imgw/2); imgh=MAX(1,imgh/2); mc++; } *p_img=Image(p_img->get_width(),p_img->get_height(),mc-1,Image::FORMAT_ETC,dst_data); } void _register_etc1_compress_func() { rg_etc1::pack_etc1_block_init(); Image::_image_compress_etc_func=_compress_etc; Image::_image_decompress_etc=_decompress_etc; }