wip, render-item update

src/mol-app/ui/transform/spacefill.tsx

src/mol-gl/renderable/mesh.ts

src/mol-gl/renderable/point.ts

src/mol-gl/renderable/util.ts

src/mol-gl/renderer.ts

src/mol-gl/shader/mesh.frag

src/mol-gl/webgl/buffer.ts

src/mol-gl/webgl/program.ts

src/mol-gl/webgl/render-item.ts

src/mol-gl/webgl/texture.ts

src/mol-gl/webgl/uniform.ts

src/mol-view/state/transform.ts

src/mol-view/viewer.ts