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What do you need to know about deferred rendering?
As the name suggests, it defers rendering shadows and lighting until the very end of the process. Your game objects and other aspects will render as a 2D image. Then simply add lights via deferred rendering. It becomes a more streamlined, more natural process.
Which is better forward rendering or back rendering?
Forward rendering, on the other hand, is much better in terms of performance. In modern graphics pipelines, the process can be boiled down to this: you send various code, containing unique geometry, vertex, and fragments, to the video card. The video card recognizes the code and renders based on your commands.
Can a single sided primitive be rendered as a double sided primitive?
Some rendering programs do not give the option to the user to declare primitives as being either single or double sided. They will either systematically discard all the backfacing primitives (they won’t be visible in the final frame) or will make them all double sided by default.
What does turning back face culling on mean?
Turning back-face culling on, means that polygons, triangles, surfaces, etc. whose normal are not facing the view direction won’t be rendered. Only geometry whose normals are facing the camera will be visible in the final image.
How are scene graphs used in game engines?
Here are some common uses of and datastructures in a scenegraph. The way you could use a scenegraph in a game or engine is to describe parent/child relationships between anything that has a position, be it a solid object, a camera or anything else.
When to use a scene graph in 2D?
2D Scene Graphs: Use of a scene graph for 2D may be useful if your content is sufficiently complex and if your objects have a number of sub components not rigidly fixed to the larger body. Otherwise, as others have mentioned, it’s probably overkill. The complexity of affine transformations in 2D is quite a bit less than in the 3D case.
How does a traversal of a scene graph work?
A traversal generally consists of starting at some arbitrary node (often the root of the scene graph), applying the operation (s) (often the updating and rendering operations are applied one after the other), and recursively moving down the scene graph (tree) to the child nodes, until a leaf node is reached.