tessellator.setNormal(0, 0, 1);
tessellator.addVertexWithUV(0, 0, 0.001, maskMaxX, maskMaxY);
tessellator.addVertexWithUV(1, 0, 0.001, maskMinX, maskMaxY);
tessellator.addVertexWithUV(1, 1, 0.001, maskMinX, maskMinY);
tessellator.addVertexWithUV(0, 1, 0.001, maskMaxX, maskMinY);
tessellator.draw();
tessellator.startDrawingQuads();
tessellator.setNormal(0, 0, -1);
tessellator.addVertexWithUV(0, 1, -0.0635, maskMinX, maskMinY);
tessellator.addVertexWithUV(1, 1, -0.0635, maskMaxX, maskMinY);
tessellator.addVertexWithUV(1, 0, -0.0635, maskMaxX, maskMaxY);