Method flush

core/src/processing/opengl/PGraphicsOpenGL.java:2246–2323

()

  @Override
  public void flush() {
    boolean hasPolys = 0 < tessGeo.polyVertexCount &&
                       0 < tessGeo.polyIndexCount;
    boolean hasLines = 0 < tessGeo.lineVertexCount &&
                       0 < tessGeo.lineIndexCount;
    boolean hasPoints = 0 < tessGeo.pointVertexCount &&
                        0 < tessGeo.pointIndexCount;

    boolean hasPixels = modified && pixels != null;

    if (hasPixels) {
      // If the user has been manipulating individual pixels,
      // the changes need to be copied to the screen before
      // drawing any new geometry.
      flushPixels();
    }

    if (hasPoints || hasLines || hasPolys) {
      PMatrix3D modelview0 = null;
      PMatrix3D modelviewInv0 = null;
      if (flushMode == FLUSH_WHEN_FULL) {
        // The modelview transformation has been applied already to the
        // tessellated vertices, so we set the OpenGL modelview matrix as
        // the identity to avoid applying the model transformations twice.
        // We save the modelview objects and temporarily use the identity
        // static matrix to avoid calling pushMatrix(), resetMatrix(),
        // popMatrix().
        modelview0 = modelview;
        modelviewInv0 = modelviewInv;
        modelview = modelviewInv = identity;
        projmodelview.set(projection);
      }

      if (hasPolys && !isDepthSortingEnabled) {
        flushPolys();
        if (raw != null) {
          rawPolys();
        }
      }

      if (is3D()) {
        if (hasLines) {
          flushLines();
          if (raw != null) {
            rawLines();
          }
        }

        if (hasPoints) {
          flushPoints();
          if (raw != null) {
            rawPoints();
          }
        }
      }

      if (hasPolys && isDepthSortingEnabled) {