Merge pull request #7256 from Garima3110/shaders

Make shaders define what they get used for.

Author: davepagurek

package-lock.json

@@ -3559,12 +3559,14 @@ function primitives3D(p5, fn){
       v1 = (sy + sHeight) / img.height;
     }
 
+    this._drawingImage = true;
     this.beginShape();
     this.vertex(dx, dy, 0, u0, v0);
     this.vertex(dx + dWidth, dy, 0, u1, v0);
     this.vertex(dx + dWidth, dy + dHeight, 0, u1, v1);
     this.vertex(dx, dy + dHeight, 0, u0, v1);
     this.endShape(constants.CLOSE);
+    this._drawingImage = false;
 
     this._pInst.pop();