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Blender is a powerful open-source tool for 2D and 3D graphics, full-on animation, compositing, and post-production. It is used to create movies and special effects, even in HD. In Blender Essential Training, Roger Wickes offers new Blender users a thorough explanation of its interface, tools, and features. He also demonstrates practical techniques and shows how to access the online and openndash;content resources of this amazing tool. Specific 3D techniques covered include navigating in 3D space, using cameras and lights, and rendering. Roger demonstrates how to rig, animate, and composite a character over live action. Exercise files accompany the course.
Certain Macs, the ones that have the NVIDIA card, have an issue displaying thumbnails in the Compositing window and as we start off the chapter now for compositing I just wanted to bring this to your attention. The way you see if you are possibly affected by this bug is to click on your Apple > About This Mac, click some More Info and then come down here and select Graphics/Displays, and if you have an NVIDIA card as your graphics card you may have this issue with Blender not being able to display the thumbnails. This is a defect in the driver for the NVIDIA cards and we would ask that you write to Apple and ask them to update the cards for the latest OpenGL standard.
So, when you do this you will see instead of a checkered background, you won't see the actual image. There is a workaround though that we can do, and that is if you want to see what this image is producing, what image is coming out of this particular node, you select the node by left-clicking on it, pressing Space, Add > Output > Viewer, and a Viewer node will be threaded right to the output of the socket. Now, to see the output of this node we just click on the Viewer node and normally the Viewer node would also show you a thumbnail, but it doesn't in this case.
But down here we can configure the UV Image Editor to show me the results of the currently selected Viewer node. And in this case when I select it now, this is the actual image that is of this particular frame of this particular file. So that's the workaround to being able to see the results of any node output.
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