fix mc example

src/tests/browser/marching-cubes.ts

@@ -73,7 +73,7 @@ async function init() {
         console.timeEnd('gpu mc pyramid2');
 
         console.time('gpu mc vert2');
-        createIsosurfaceBuffers(webgl, activeVoxelsTex2, densityTextureData2.texture, compacted2, densityTextureData2.gridDim, densityTextureData2.gridTexDim, densityTextureData2.transform, isoValue);
+        createIsosurfaceBuffers(webgl, activeVoxelsTex2, densityTextureData2.texture, compacted2, densityTextureData2.gridDim, densityTextureData2.gridTexDim, densityTextureData2.transform, isoValue, true);
         webgl.waitForGpuCommandsCompleteSync();
         console.timeEnd('gpu mc vert2');
         console.timeEnd('gpu mc2');
@@ -96,7 +96,7 @@ async function init() {
     console.timeEnd('gpu mc pyramid');
 
     console.time('gpu mc vert');
-    const gv = createIsosurfaceBuffers(webgl, activeVoxelsTex, densityTextureData.texture, compacted, densityTextureData.gridDim, densityTextureData.gridTexDim, densityTextureData.transform, isoValue);
+    const gv = createIsosurfaceBuffers(webgl, activeVoxelsTex, densityTextureData.texture, compacted, densityTextureData.gridDim, densityTextureData.gridTexDim, densityTextureData.transform, isoValue, true);
     webgl.waitForGpuCommandsCompleteSync();
     console.timeEnd('gpu mc vert');
     console.timeEnd('gpu mc');
@@ -104,7 +104,7 @@ async function init() {
     console.log({ ...webgl.stats, programCount: webgl.stats.resourceCounts.program, shaderCount: webgl.stats.resourceCounts.shader });
 
     const mcBoundingSphere = Sphere3D.fromBox3D(Sphere3D(), densityTextureData.bbox);
-    const mcIsosurface = TextureMesh.create(gv.vertexCount, 1, gv.vertexGroupTexture, gv.normalTexture, mcBoundingSphere);
+    const mcIsosurface = TextureMesh.create(gv.vertexCount, 1, gv.vertexTexture, gv.groupTexture, gv.normalTexture, mcBoundingSphere);
     const mcIsoSurfaceProps = { doubleSided: true, flatShaded: true, alpha: 1.0 };
     const mcIsoSurfaceValues = TextureMesh.Utils.createValuesSimple(mcIsosurface, mcIsoSurfaceProps, Color(0x112299), 1);
     // console.log('mcIsoSurfaceValues', mcIsoSurfaceValues)