Join Brian Bradley for an in-depth discussion in this video V-Ray frame buffer history controls, part of SketchUp: Rendering with V-Ray 3.
- [Instructor] One option found on the V-Ray frame buffer window and one that you will see me make extensive use of throughout this course is the history tool. In this exercise what we're going to do then is take a minute or two to explore both the workings of and the options available for this very handy option. To enable the render history function, all we need do is click the big H icon that can be seen on the bottom of the frame buffer window. Now, in V-Ray for SketchUp 3 Plus, the history panel now sits docked to the main frame buffer window which in my honest opinion makes it much easier to work with.
Starting on the far left of the history toolbar we have what is essentially an on/off switch for the function and if I go ahead and click on that to turn history on, we can see the rest of the icons come to life. It is very easy to remember what this option does as seeing as it makes use of the universal power on/off symbol for its icon. With history on, the next function we get access to comes in the form of a save button. Now, even though I currently have no render sitting in the frame buffer, I can still click this and essentially save a blank placeholder image to my hard drive which is where all of these history images are going to be stored.
To set exactly where on a drive these files get saved to, we can come to the far right of the toolbar and open up the history settings dialog which in fact, when we enable history for the very first time, should pop up automatically. In here we can set the directory path using any drive we choose, we can set the maximum amount of disk space in megabytes that we want the history function to take up, we can also tell V-Ray to automatically save each render that we take to the history list and we can filter this a little by telling it to save only finished renders.
Once done here, we can close by hitting the OK button. To demonstrate our next piece of button functionality, I am going to need a completed render, and so let's hit the render button. Once done, we can use the save function to add the new render to the history list and then also delete the rendered image from the frame buffer window itself. With the render now selected in the history list, we can use our third toolbar button to load this or indeed, any other image back into the frame buffer window any time that we want.
Next up, we have a familiar looking delete or remove function that does exactly what the label says. With our placeholder image selected then, I can hit the remove button and it is gone, not only from the history list but also from the drive onto which I saved it. The big difference between this and previous versions of V-Ray for SketchUp of course being that the remove button on the history toolbar now sends history images to our operating system's recycle bin rather than permanently deleting them outright.
Our final two options let us set which images show up on the left and right-hand sides of the frame buffer window with anything set as channel A sitting on the left whilst anything designated as channel B ends up sitting on the right. Indeed, let's make a quick change to our scene here so that we can see this functionality in action. A quick change of camera position should be more than enough. If we render now which clears the A and B designations, we can go ahead and compare an already saved image from the history list to the current render sitting in the frame buffer window and to do this, we don't actually need to save our current render into the history list if we don't want to.
All we need do is select the saved image in the list and then hit the set A button. This as you can see loads the history image into the left side of the frame buffer window, leaving the existing render occupying the right side or channel B slot. We can even use the swap A and B images button if that in any way helps with our image evaluation. Clearly then the history tool and the V-Ray frame buffer in general have lots to offer in the way of handy and powerful production tools that can oftentimes be invaluable when it comes to being able to get our job done.
- Gamma handling in V-Ray 3 for SketchUp
- Working with interactive rendering
- V-Ray light types
- Working with irradiance mapping
- Rendering animations
- Working with the V-Ray camera
- Using the Materials UI
- V-Ray FX tools
- Stereoscopic 3D rendering
- Using V-Ray objects