diff --git a/plugins/rendermax/CMakeLists.txt b/plugins/rendermax/CMakeLists.txt
index c781bde48..a7422a2cd 100644
--- a/plugins/rendermax/CMakeLists.txt
+++ b/plugins/rendermax/CMakeLists.txt
@@ -19,12 +19,14 @@ IF(UNIX)
     add_definitions(-DLINUX_BUILD)
     SET(PROJECT_LIBS
         # add any extra linux libs here
+		lua
         ${PROJECT_LIBS}
     )
 # windows
 ELSE(UNIX)
     SET(PROJECT_LIBS
         # add any extra windows libs here
+		lua
         ${PROJECT_LIBS}
         $(NOINHERIT)
     )
diff --git a/plugins/rendermax/renderer_opengl.hpp b/plugins/rendermax/renderer_opengl.hpp
index 525460b71..1cd9d1bac 100644
--- a/plugins/rendermax/renderer_opengl.hpp
+++ b/plugins/rendermax/renderer_opengl.hpp
@@ -250,4 +250,87 @@ public:
         renderer_wrap::resize(w,h);
         reinitLightGrid(w,h);
     }
+};
+
+struct rgba
+{
+    float r,g,b,a;
+};
+struct renderer_lua : public renderer_wrap {
+private:
+    void overwriteTile(int x,int y)
+    {
+        const int tile = xyToTile(x,y);
+        old_opengl* p=reinterpret_cast<old_opengl*>(parent);
+        float *fg = p->fg + tile * 4 * 6;
+        float *bg = p->bg + tile * 4 * 6;
+        float *tex = p->tex + tile * 2 * 6;
+        lightCell fm=foreMult[tile];
+        lightCell fo=foreOffset[tile];
+
+        lightCell bm=backMult[tile];
+        lightCell bo=backOffset[tile];
+        for (int i = 0; i < 6; i++) {
+            rgba* fore=reinterpret_cast<rgba*>(fg);
+            fore->r=fore->r*fm.r+fo.r;
+            fore->g=fore->g*fm.g+fo.g;
+            fore->b=fore->b*fm.b+fo.b;
+
+            fg+=4;
+            rgba* back=reinterpret_cast<rgba*>(bg);
+            back->r=back->r*bm.r+bo.r;
+            back->g=back->g*bm.g+bo.g;
+            back->b=back->b*bm.b+bo.b;
+            bg+=4;
+        }
+    }
+    void reinitGrids(int w,int h)
+    {
+        tthread::lock_guard<tthread::fast_mutex> guard(dataMutex);
+        foreOffset.resize(w*h);
+        foreMult.resize(w*h);
+        backOffset.resize(w*h);
+        backMult.resize(w*h);
+    }
+    void reinitGrids()
+    {
+        reinitGrids(df::global::gps->dimy,df::global::gps->dimx);
+    }
+public:
+    tthread::fast_mutex dataMutex;
+    std::vector<lightCell> foreOffset,foreMult;
+    std::vector<lightCell> backOffset,backMult;
+    inline int xyToTile(int x, int y)
+    {
+       return x*(df::global::gps->dimy) + y;
+    }
+    renderer_lua(renderer* parent):renderer_wrap(parent)
+    {
+        reinitGrids();
+    }
+    virtual void update_tile(int32_t x, int32_t y) { 
+        renderer_wrap::update_tile(x,y);
+        tthread::lock_guard<tthread::fast_mutex> guard(dataMutex);
+        overwriteTile(x,y);
+        //some sort of mutex or sth?
+        //and then map read
+    };
+    virtual void update_all() { 
+        renderer_wrap::update_all();
+        tthread::lock_guard<tthread::fast_mutex> guard(dataMutex);
+        for (int x = 0; x < df::global::gps->dimx; x++)
+            for (int y = 0; y < df::global::gps->dimy; y++)
+                overwriteTile(x,y);
+        //some sort of mutex or sth?
+        //and then map read
+        //same stuff for all of them i guess...
+    };
+    virtual void grid_resize(int32_t w, int32_t h) { 
+        renderer_wrap::grid_resize(w,h);
+        reinitGrids(w,h);
+    };
+    virtual void resize(int32_t w, int32_t h) {
+        renderer_wrap::resize(w,h);
+        reinitGrids(w,h);
+    }
 };
\ No newline at end of file
diff --git a/plugins/rendermax/rendermax.cpp b/plugins/rendermax/rendermax.cpp
index 85232cde9..cc4b77301 100644
--- a/plugins/rendermax/rendermax.cpp
+++ b/plugins/rendermax/rendermax.cpp
@@ -1,6 +1,8 @@
 #include <vector>
 #include <string>
 
+#include <LuaTools.h>
+
 #include "Core.h"
 #include "Console.h"
 #include "Export.h"
@@ -17,7 +19,7 @@ using std::vector;
 using std::string;
 enum RENDERER_MODE
 {
-    MODE_DEFAULT,MODE_TRIPPY,MODE_TRUECOLOR
+    MODE_DEFAULT,MODE_TRIPPY,MODE_TRUECOLOR,MODE_LUA
 };
 RENDERER_MODE current_mode=MODE_DEFAULT;
 static command_result rendermax(color_ostream &out, vector <string> & parameters);
@@ -46,6 +48,159 @@ void installNew(df::renderer* r,RENDERER_MODE newMode)
     df::global::enabler->renderer=r;
     current_mode=newMode;
 }
+static void lockGrids()
+{
+    if(current_mode!=MODE_LUA)
+        return ;
+    renderer_lua* r=reinterpret_cast<renderer_lua*>(df::global::enabler->renderer);
+    r->dataMutex.lock();
+}
+static void unlockGrids()
+{
+    if(current_mode!=MODE_LUA)
+        return ;
+    renderer_lua* r=reinterpret_cast<renderer_lua*>(df::global::enabler->renderer);
+    r->dataMutex.unlock();
+}
+static void resetGrids()
+{
+    if(current_mode!=MODE_LUA)
+        return ;
+    renderer_lua* r=reinterpret_cast<renderer_lua*>(df::global::enabler->renderer);
+    for(size_t i=0;i<r->foreMult.size();i++)
+    {
+        r->foreMult[i]=lightCell(1,1,1);
+        r->foreOffset[i]=lightCell(0,0,0);
+        r->backMult[i]=lightCell(1,1,1);
+        r->backOffset[i]=lightCell(0,0,0);
+    }
+}
+static int getGridsSize()
+{
+    if(current_mode!=MODE_LUA)
+        return -1;
+    renderer_lua* r=reinterpret_cast<renderer_lua*>(df::global::enabler->renderer);
+    lua_pushnumber(L,df::global::gps->dimx);
+    lua_pushnumber(L,df::global::gps->dimy);
+    return 2;
+}
+static int getCell(lua_State* L)
+{
+    if(current_mode!=MODE_LUA)
+        return 0;
+    renderer_lua* r=reinterpret_cast<renderer_lua*>(df::global::enabler->renderer);
+    int x=luaL_checknumber(L,1);
+    int y=luaL_checknumber(L,2);
+    int id=r->xyToTile(x,y);
+    lightCell fo=r->foreOffset[id];
+    lightCell fm=r->foreMult[id];
+    lightCell bo=r->backOffset[id];
+    lightCell bm=r->backMult[id];
+    lua_newtable(L);
+
+    lua_newtable(L);
+    lua_pushnumber(L,fo.r);
+    lua_setfield(L,-2,"r");
+    lua_pushnumber(L,fo.g);
+    lua_setfield(L,-2,"g");
+    lua_pushnumber(L,fo.b);
+    lua_setfield(L,-2,"b");
+    lua_setfield(L,-2,"fo");
+
+    lua_newtable(L);
+    lua_pushnumber(L,fm.r);
+    lua_setfield(L,-2,"r");
+    lua_pushnumber(L,fm.g);
+    lua_setfield(L,-2,"g");
+    lua_pushnumber(L,fm.b);
+    lua_setfield(L,-2,"b");
+    lua_setfield(L,-2,"fm");
+
+    lua_newtable(L);
+    lua_pushnumber(L,bo.r);
+    lua_setfield(L,-2,"r");
+    lua_pushnumber(L,bo.g);
+    lua_setfield(L,-2,"g");
+    lua_pushnumber(L,bo.b);
+    lua_setfield(L,-2,"b");
+    lua_setfield(L,-2,"bo");
+
+    lua_newtable(L);
+    lua_pushnumber(L,bm.r);
+    lua_setfield(L,-2,"r");
+    lua_pushnumber(L,bm.g);
+    lua_setfield(L,-2,"g");
+    lua_pushnumber(L,bm.b);
+    lua_setfield(L,-2,"b");
+    lua_setfield(L,-2,"bm");
+    return 1;
+}
+static int setCell(lua_State* L)
+{
+    if(current_mode!=MODE_LUA)
+        return 0;
+    renderer_lua* r=reinterpret_cast<renderer_lua*>(df::global::enabler->renderer);
+    int x=luaL_checknumber(L,1);
+    int y=luaL_checknumber(L,2);
+
+    lightCell fo;
+    lua_getfield(L,3,"fo");
+    lua_getfield(L,-1,"r");
+    fo.r=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"g");
+    fo.g=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"b");
+    fo.b=lua_tonumber(L,-1);lua_pop(L,1);
+    lightCell fm;
+    lua_getfield(L,3,"fm");
+    lua_getfield(L,-1,"r");
+    fm.r=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"g");
+    fm.g=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"b");
+    fm.b=lua_tonumber(L,-1);lua_pop(L,1);
+
+    lightCell bo;
+    lua_getfield(L,3,"bo");
+    lua_getfield(L,-1,"r");
+    bo.r=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"g");
+    bo.g=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"b");
+    bo.b=lua_tonumber(L,-1);lua_pop(L,1);
+
+    lightCell bm;
+    lua_getfield(L,3,"bm");
+    lua_getfield(L,-1,"r");
+    bm.r=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"g");
+    bm.g=lua_tonumber(L,-1);lua_pop(L,1);
+    lua_getfield(L,-1,"b");
+    bm.b=lua_tonumber(L,-1);lua_pop(L,1);
+    int id=r->xyToTile(x,y);
+    r->foreMult[id]=fm;
+    r->foreOffset[id]=fo;
+    r->backMult[id]=bm;
+    r->backOffset[id]=bo;
+    return 0;
+}
+bool isEnabled()
+{
+    return current_mode==MODE_LUA;
+}
+DFHACK_PLUGIN_LUA_FUNCTIONS {
+    DFHACK_LUA_FUNCTION(isEnabled),
+    DFHACK_LUA_FUNCTION(lockGrids),
+    DFHACK_LUA_FUNCTION(unlockGrids),
+    DFHACK_LUA_FUNCTION(getGridsSize),
+    DFHACK_LUA_FUNCTION(resetGrids),
+    DFHACK_LUA_END
+};
+DFHACK_PLUGIN_LUA_COMMANDS {
+    DFHACK_LUA_COMMAND(getCell),
+    DFHACK_LUA_COMMAND(setCell),
+    DFHACK_LUA_END
+};
 static command_result rendermax(color_ostream &out, vector <string> & parameters)
 {
     if(parameters.size()==0)
@@ -102,8 +257,15 @@ static command_result rendermax(color_ostream &out, vector <string> & parameters
             }
             return CR_OK;
         }
-       
-        
+    }
+    else if(cmd=="lua")
+    {
+        removeOld();
+        installNew(new renderer_lua(df::global::enabler->renderer),MODE_LUA);
+        lockGrids();
+        resetGrids();
+        unlockGrids();
+        return CR_OK;
     }
     else if(cmd=="disable")
     {