invert rgbaPixels, fixes #5013

core/src/processing/opengl/PGraphicsOpenGL.java

@@ -5479,7 +5479,7 @@ public class PGraphicsOpenGL extends PGraphics {
       endPixelsOp();
     } else {
       // We only need to copy the pixels to the back texture where we are
-      // currently drawing to. Because the texture is invertex along Y, we
+      // currently drawing to. Because the texture is inverted along Y, we
       // need to reflect that in the vertical arguments.
       pgl.copyToTexture(texture.glTarget, texture.glFormat, texture.glName,
                         x, pixelHeight - (y + h), w, h, nativePixelBuffer);

core/src/processing/opengl/Texture.java

@@ -340,6 +340,8 @@ public class Texture implements PConstants {
 
     loadPixels(w * h);
     convertToRGBA(pixels, format, w, h);
+    if (invertedX) flipArrayOnX(rgbaPixels, 1);
+    if (invertedY) flipArrayOnY(rgbaPixels, 1);
     updatePixelBuffer(rgbaPixels);
     pgl.texSubImage2D(glTarget, 0, x, y, w, h, PGL.RGBA, PGL.UNSIGNED_BYTE,
                       pixelBuffer);