diff --git a/src/tm_converter2/tm_converter2.cpp b/src/tm_converter2/tm_converter2.cpp
new file mode 100644
index 0000000..9a77a2c
--- /dev/null
+++ b/src/tm_converter2/tm_converter2.cpp
@@ -0,0 +1,192 @@
+/*
+ * AIM tm_converter
+ * Copyright (C) 2015 lzwdgc
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <color.h>
+#include <mmap.h>
+
+#include <primitives/filesystem.h>
+#include <primitives/sw/main.h>
+#include <primitives/sw/settings.h>
+#include <primitives/sw/cl.h>
+#include <s3tc.h>
+#include <opencv2/highgui.hpp>
+#include <opencv2/imgproc.hpp>
+
+#include <algorithm>
+#include <bit>
+#include <fstream>
+#include <iostream>
+#include <sstream>
+#include <stdio.h>
+#include <stdint.h>
+#include <string>
+
+#ifdef _WIN32
+#include <d3d9.h>
+#endif
+
+/*
+aim icons
+TEX_KT_ICONS.TM
+64 x 32
+16 icon in a column
+*/
+
+// TODO: add dxt5 compressor from stb libs (stb_dxt5)
+// see org.sw.demo.stb.all
+
+using namespace std;
+
+#pragma pack(push, 1)
+struct tm_file {
+    int32_t width;
+    int32_t height;
+    // https://learn.microsoft.com/en-us/windows/win32/direct3d9/d3dformat
+#ifdef _WIN32
+    D3DFORMAT d3dformat;
+#else
+    uint32_t d3dformat;
+#endif
+    // see for some infos https://learn.microsoft.com/en-us/previous-versions/ms889290(v=msdn.10)
+    // IDirect3DDevice8::CreateTexture
+    // or not? or number of helper images or total imgs
+    uint32_t levels;
+    // or not only dxt5? maybe enum?
+    uint32_t dxt5_compression;
+    // TEX_NIGHT13.TM has 1 here
+    // TEX_kt_icons.TM has 8 here
+    // maybe levels?
+    // number of anims? icon variants?
+    uint32_t unk0;
+    uint8_t unkX[0x4C-0x18];
+};
+#pragma pack(pop)
+
+void convert(const path &fn)
+{
+    primitives::templates2::mmap_file<uint8_t> f{fn};
+    stream s{f};
+    tm_file tm = s;
+
+    // format check
+    switch (tm.d3dformat) {
+    case D3DFMT_A8R8G8B8:
+        break;
+    case D3DFMT_X8R8G8B8:
+        break;
+    default:
+        SW_UNIMPLEMENTED;
+    }
+
+    // compression check
+    switch (tm.dxt5_compression) {
+    case 0:
+        break;
+    case 1:
+        break;
+    default:
+        SW_UNIMPLEMENTED;
+    }
+
+    auto save = [&](auto &&sub) {
+        cv::Mat m(tm.width, tm.height, CV_8UC4);
+        if (tm.dxt5_compression) {
+            // this have some one off results
+            // probaby we did different rounding in current (v1) impl
+            BlockDecompressImageDXT5(tm.width, tm.height, s.p, (unsigned long *)m.data);
+            s.skip(tm.width * tm.height);
+            // only for dxt5
+            m.forEach<cv::Vec4b>([](auto &v, auto *pos) {
+                // ARGB -> BGRA (big endian)
+                // but in bytes (little endian)
+                // 0xBGRA -> 0xABGR
+                auto &val = *(uint32_t *)&v;
+                val = std::rotr(val, 8);
+            });
+            if (tm.d3dformat == D3DFMT_X8R8G8B8) {
+                // and shrink if possible
+                cv::cvtColor(m, m, cv::COLOR_BGRA2BGR);
+            }
+        }
+        else
+        {
+            // 'simple' files consists of:
+            // 1. 'normal' image (bitmap)
+            // 2. some kind of mask?
+            // 3. rest? levels?
+            // but every tm has multiple levels or so
+
+            int size = tm.width * tm.height * 2;
+            auto dst = m.data;
+            for (int i = 0; i < size; ++i) {
+                uint8_t c = s;
+                uint8_t lo = c & 0x0F;
+                uint8_t hi = (c & 0xF0) >> 4;
+                *dst++ = (lo << 4) | lo;
+                *dst++ = (hi << 4) | hi;
+            }
+        }
+        // opencv can't save to tga directly
+        cv::imwrite((path(fn) += sub + ".bmp"s).string(), m);
+    };
+    save("");
+    // not sure how to parse rest, probably dx8 generated texture levels
+    // and we dont need them
+    return;
+
+    if (!tm.dxt5_compression) {
+        save("_mask"); // what is it?
+    }
+    for (int i = 0; i < tm.unk0; ++i) {
+        // obviosly small
+        tm.width /= 2;
+        tm.height /= 2;
+        save(std::format("_small{}", i + 1));
+        if (!tm.dxt5_compression) {
+            save(std::format("_small{}_mask", i + 1));
+        }
+    }
+
+    if (s.p - f.p != f.sz) {
+        int a = 5;
+        a++;
+        SW_UNIMPLEMENTED;
+    }
+}
+
+int main(int argc, char *argv[])
+{
+    cl::list<path> list(cl::Positional, cl::desc("<files.tm or dirs>"), cl::Required, cl::OneOrMore);
+
+    cl::ParseCommandLineOptions(argc, argv);
+
+    for (auto &&p : list) {
+        if (fs::is_regular_file(p)) {
+            convert(p);
+        } else if (fs::is_directory(p)) {
+            auto files = enumerate_files_like(p, ".*\\.TM", false);
+            for (auto &f : files) {
+                std::cout << "processing: " << to_printable_string(f) << "\n";
+                convert(f);
+            }
+        } else {
+            throw std::runtime_error("Bad fs object");
+        }
+    }
+    return 0;
+}
diff --git a/sw.cpp b/sw.cpp
index 3a621ed..4e71a46 100644
--- a/sw.cpp
+++ b/sw.cpp
@@ -57,6 +57,10 @@ void build(Solution &s)
     add_exe_with_common("script2txt");
     add_exe_with_common("txt2script");
     add_exe_with_common("tm_converter");
+    add_exe_with_common("tm_converter2") +=
+        "org.sw.demo.BenjaminDobell.s3tc_dxt_decompression-master"_dep,
+        "org.sw.demo.intel.opencv.highgui"_dep
+        ;
     add_exe("name_generator");
     add_exe_with_common("save_loader");
     add_exe_with_common("bms_converter");