private void renderMeshDefault(Mesh mesh, int lod, int count) {
    VertexBuffer indices;

    VertexBuffer interleavedData = mesh.getBuffer(Type.InterleavedData);
    if (interleavedData != null && interleavedData.isUpdateNeeded()) {
      updateBufferData(interleavedData);
    }

    if (mesh.getNumLodLevels() > 0) {
      indices = mesh.getLodLevel(lod);
    } else {
      indices = mesh.getBuffer(Type.Index);
    }
    for (VertexBuffer vb : mesh.getBufferList().getArray()) {
      if (vb.getBufferType() == Type.InterleavedData
          || vb.getUsage() == Usage.CpuOnly // ignore cpu-only buffers
          || vb.getBufferType() == Type.Index) {
        continue;
      }

      if (vb.getStride() == 0) {
        // not interleaved
        setVertexAttrib(vb);
      } else {
        // interleaved
        setVertexAttrib(vb, interleavedData);
      }
    }

    if (indices != null) {
      drawTriangleList(indices, mesh, count);
    } else {
      GL gl = GLContext.getCurrentGL();
      gl.glDrawArrays(convertElementMode(mesh.getMode()), 0, mesh.getVertexCount());
    }

    // TODO: Fix these to use IDList??
    clearVertexAttribs();
    clearTextureUnits();
    resetFixedFuncBindings();
  }
  public void setVertexAttrib(VertexBuffer vb, VertexBuffer idb) {
    if (vb.getBufferType() == VertexBuffer.Type.Color && !context.useVertexColor) {
      // Ignore vertex color buffer if vertex color is disabled.
      return;
    }

    int arrayType = convertArrayType(vb.getBufferType());
    if (arrayType == -1) {
      return; // unsupported
    }
    glEnableClientState(arrayType);
    context.boundAttribs[vb.getBufferType().ordinal()] = vb;

    if (vb.getBufferType() == Type.Normal) {
      // normalize if requested
      if (vb.isNormalized() && !context.normalizeEnabled) {
        glEnable(GL_NORMALIZE);
        context.normalizeEnabled = true;
      } else if (!vb.isNormalized() && context.normalizeEnabled) {
        glDisable(GL_NORMALIZE);
        context.normalizeEnabled = false;
      }
    }

    // NOTE: Use data from interleaved buffer if specified
    Buffer data = idb != null ? idb.getData() : vb.getData();
    int comps = vb.getNumComponents();
    int type = convertVertexFormat(vb.getFormat());

    data.rewind();

    switch (vb.getBufferType()) {
      case Position:
        if (!(data instanceof FloatBuffer)) {
          throw new UnsupportedOperationException();
        }

        glVertexPointer(comps, vb.getStride(), (FloatBuffer) data);
        break;
      case Normal:
        if (!(data instanceof FloatBuffer)) {
          throw new UnsupportedOperationException();
        }

        glNormalPointer(vb.getStride(), (FloatBuffer) data);
        break;
      case Color:
        if (data instanceof FloatBuffer) {
          glColorPointer(comps, vb.getStride(), (FloatBuffer) data);
        } else if (data instanceof ByteBuffer) {
          glColorPointer(comps, true, vb.getStride(), (ByteBuffer) data);
        } else {
          throw new UnsupportedOperationException();
        }
        break;
      case TexCoord:
        if (!(data instanceof FloatBuffer)) {
          throw new UnsupportedOperationException();
        }

        glTexCoordPointer(comps, vb.getStride(), (FloatBuffer) data);
        break;
      default:
        // Ignore, this is an unsupported attribute for OpenGL1.
        break;
    }
  }