Contents
What is directx 11 tessellation?
One of the most important changes that DX11 has made is the brand new feature called tessellation. With phong tessellation, it smoothes the silhouette so that no sharp edge corner will be visible. Combined with displacement map, tessellation can produce bump surfaces in a much more realistic way than normal map or POM.
Should I use tessellation?
Tessellation is a way that you can save memory and bandwidth but at the cost of GPU performance. Why you should use tessellation: Tessellation with displacement maps significantly reduces memory bandwidth for animated or multi-instance objects in the scene.
What is tessellation in games?
Tessellation. Tessellation is a computer graphics technique used to manage vertex sets and divide them into structures suitable for rendering, enabling graphical primitives to be generated on the GPU.
What is meant by DirectX?
Microsoft DirectX is a collection of application programming interfaces (APIs) for handling tasks related to multimedia, especially game programming and video, on Microsoft platforms. Direct3D is also used by other software applications for visualization and graphics tasks such as CAD/CAM engineering.
How to perform hardware tessellation in DirectX 11?
Hardware tessellation is one of the new features of DirectX 11 that was unavailable in previous versions. This tutorial will cover how to perform tessellation using DirectX 11 with HLSL and C++. Previously to tessellate models, terrain, and such you would need to do the subdivision of the polygon mesh in software.
How does tessellationdx11 work in Unreal Engine?
This means meshes can be created in some lower triangle density and get refined depending on distance or other properties (e.g. depending on geometry details). This process is programmable which allows to implement displacement mapping.
What are the changes in DirectX 11 and 12?
In simple terms the main change is that the programmable vertex shader has been broken into three parts. These three parts are the vertex shader, the hull shader, and the domain shader. Tessellation occurs between the hull and the domain shader. The pixel shader remains as it was.
What happens when Edge tessellator is set to 0?
If the hull-shader stage sets any edge tessellation factor to = 0 or NaN, the patch will be culled. As a result, the tessellator stage may or may not run, the domain shader will not run, and no visible output will be produced for that patch.