Set tileCoord from passed vUv coordinate (topmost only)

Gets close to proper material texturing, but not quite. Some block
faces render as expected but others have the wrong texture. Still,
closest I've gotten so far yet with greedy meshing + atlas uv + vjs..

index.js

@@ -116,14 +116,17 @@ function Texture(game, opts) {
 '   vec2 tileOffset;',
 
 // because ERROR: 0:45: '[]' : Index expression must be constant (and also, WebGL OpenGL ES 2.0 doesn't support switch/case)
-'   if (faceIndex == 0) tileOffset = tileOffsets[0];',
+'/*   if (faceIndex == 0) tileOffset = tileOffsets[0];',
 '   else if (faceIndex == 1) tileOffset = tileOffsets[1];',
 '   else if (faceIndex == 2) tileOffset = tileOffsets[2];',
 '   else if (faceIndex == 3) tileOffset = tileOffsets[3];',
 '   else if (faceIndex == 4) tileOffset = tileOffsets[4];',
 '   else if (faceIndex == 5) tileOffset = tileOffsets[5];',
 '   else if (faceIndex == 6) tileOffset = tileOffsets[6];',
-'   else tileOffset = tileOffsets[3];',
+'   else tileOffset = tileOffsets[3]; */',
+
+'   tileOffset.s = vUv.s;',
+'   tileOffset.t = 1.0 - vUv.t;',
 
 '   vec2 texCoord = tileOffset + tileSizeUV * fract(tileUV);',
 '',
@@ -411,7 +414,8 @@ Texture.prototype.paint = function(mesh, materials) {
     //mesh.surfaceMesh.material.materials[0].uniforms.tileOffsets.value[faceIndex] = new self.game.THREE.Vector2(atlasuv[0][0], atlasuv[0][1]);
 
     for (var j = 0; j < mesh.geometry.faceVertexUvs[0][i].length; j++) {
-      mesh.geometry.faceVertexUvs[0][i][j].set(atlasuv[j][0], 1 - atlasuv[j][1]);
+      //mesh.geometry.faceVertexUvs[0][i][j].set(atlasuv[j][0], 1 - atlasuv[j][1]);
+      mesh.geometry.faceVertexUvs[0][i][j].set(topUV[0], topUV[1]); // set all to top (fixed tileSizeUV)
     }
   });