diff --git a/lib/ext/glxrender.js b/lib/ext/glxrender.js
index 6eba8c7..014d544 100644
--- a/lib/ext/glxrender.js
+++ b/lib/ext/glxrender.js
@@ -138,8 +138,16 @@ module.exports = function(GLX, ctx) {
     }
 
     function render(ctxLocal) {
+
         if (!ctxLocal) // ctxLocal overrides ctx passed during creation of renderContext
             ctxLocal = ctx;
+
+        if (buffers.length == 0) {
+          buffers = [];
+          currentLength = 0;
+          return;
+        }
+
         GLX.Render(ctxLocal, buffers);
         buffers = [];
         currentLength = 0;
@@ -255,15 +263,20 @@ module.exports = function(GLX, ctx) {
         },
         TexImage2D: function(target, level, internalFormat, width, height, border, format, type, data) {
 
+          render();
+
           var typeSize = [];
           typeSize[constants.FLOAT] = 4;
           typeSize[constants.BYTE] = 1;
           typeSize[constants.UNSIGNED_BYTE] = 1;
 
-          var res = commandBuffer(110, 56 + data.length*typeSize[type]);
-          res[4] = 0; // swapbytes
-          res[5] = 0; // lsbfirst
-          res.writeUInt16LE(0, 6);   // unused 
+          var res = new Buffer(60 + data.length*typeSize[type]);
+          res.writeUInt32LE(res.length, 0);
+          res.writeUInt32LE(110, 4);
+
+          res[8] = 0; // swapbytes
+          res[9] = 0; // lsbfirst
+          res.writeUInt16LE(0, 10);   // unused 
 
 	/*
 	defaults: (from http://stackoverflow.com/questions/21563590/glteximage2d-protocol-arguments?noredirect=1#comment32577251_21563590 )
@@ -277,35 +290,58 @@ module.exports = function(GLX, ctx) {
 
 	*/
 
-          res.writeUInt32LE(0, 8);   // rowlength
-          res.writeUInt32LE(0, 12);  // skiprows
-          res.writeUInt32LE(0, 16);  // skippixels
-          res.writeUInt32LE(4, 20);  // alignment
+          res.writeUInt32LE(0, 12);   // rowlength
+          res.writeUInt32LE(0, 16);  // skiprows
+          res.writeUInt32LE(0, 20);  // skippixels
+          res.writeUInt32LE(4, 24);  // alignment
 
-          res.writeUInt32LE(target, 24);
-          res.writeUInt32LE(level, 28);
-          res.writeUInt32LE(internalFormat, 32);
-          res.writeUInt32LE(width, 36);
-          res.writeUInt32LE(height, 40);
-          res.writeUInt32LE(border, 44);
-          res.writeUInt32LE(format, 48);
-          res.writeUInt32LE(type, 52);
+          res.writeUInt32LE(target, 28);
+          res.writeUInt32LE(level, 32);
+          res.writeUInt32LE(internalFormat, 36);
+          res.writeUInt32LE(width, 40);
+          res.writeUInt32LE(height, 44);
+          res.writeUInt32LE(border, 48);
+          res.writeUInt32LE(format, 52);
+          res.writeUInt32LE(type, 56);
 
           switch(type) {
           case constants.FLOAT:
             for (var i=0; i < data.length; ++i)
-              res.writeFloatLE(data[i], 56+i*typeSize[type]);
+              res.writeFloatLE(data[i], 60+i*typeSize[type]);
             break;
           case constants.BYTE:
           case constants.UNSIGNED_BYTE:
             for (var i=0; i < data.length; ++i)
-              res[56+i] = data[i];
+              res[60+i] = data[i];
             break;
           default:
             throw new Error('unsupported texture type:' + type);
           }
-          buffers.push(res); 
+
+          // bake sure buffer for glxRender request is emptied first 
+          render();
+
+          var dataLen = res.length;
+          var maxSize = 65536*4 - 16 - 8;
+          var totalRequests = 1 + parseInt(dataLen / maxSize) - 1;
+          if (dataLen % maxSize)
+            totalRequests++;
+       
+          var pos = 0;
+          var reqNum = 1;
+          while(dataLen > 0) {
+            if (dataLen < maxSize) {
+              GLX.RenderLarge(ctx, reqNum, totalRequests, res.slice(pos));
+              break;
+            } else {
+              GLX.RenderLarge(ctx, reqNum, totalRequests, res.slice(pos, pos + maxSize));
+              pos += maxSize;
+              dataLen -= maxSize;
+              reqNum++;
+            }
+          }
         },
+
         TexCoord2f: function(x, y) {
             serialize2f(54, x, y);
         }