pgl.vertexAttribPointer(vertLoc, 3, PGL.FLOAT, false, 7 * SIZEOF_FLOAT, 0);
pgl.vertexAttribPointer(colorLoc, 4, PGL.FLOAT, false, 7 * SIZEOF_FLOAT, 3 * SIZEOF_FLOAT);
pgl.vertexAttribPointer(vertLoc, 3, PGL.FLOAT, false, 7 * SIZEOF_FLOAT, 0);
pgl.vertexAttribPointer(colorLoc, 4, PGL.FLOAT, false, 7 * SIZEOF_FLOAT, 3 * SIZEOF_FLOAT);