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How is multithreaded rendering optimized in DirectX 11?
Test platform configurations “MultithreadedRendering11” (Figure 4) is a sample of DirectX 11 multithreaded rendering. To objectively evaluate the performance and overhead of calling DirectX 11 APIs in multiple threads, it is optimized by reducing thread synchronization overhead and application-layer load.
Which is better multithreaded DirectX or single threaded DirectX?
However, when with more CPU cores, the performance of multithreaded deferred rendering is much better on NVIDIA graphics, and a little better on Intel graphics, but worse on AMD graphics than single-threaded immediate rendering. Note that NVIDIA graphics support hard acceleration for DirectX 11 multithreading.
How are deferred contexts used in multithreaded rendering?
Different deferred contexts can be used in different threads simultaneously, generating the command-lists that are to be executed in the immediate context. This multithreading strategy allows complex scenes to be broken up into concurrent tasks 1. Figure 1. DirectX 11 multithreading model
What are the pros and cons of multithreaded rendering?
On multithreaded rendering performance, developers often concern about its actual pros and cons, multicore scalability and relevant key influence factors, and practical multithreading methods, among other things.
How to get the best performance in Direct3D 9?
To get the best rendering performance during execution, try to work with primitives in batches and keep the number of render-state changes as low as possible. For example, if you have an object with two textures, group the triangles that use the first texture and follow them with the necessary render state to change the texture.
When to use d3dusage _ dynamic in Direct3D 9?
D3DUSAGE_DYNAMIC is only useful when the buffer is locked frequently; data that remains constant should be placed in a static vertex or index buffer. To receive a performance improvement when using dynamic vertex buffers, the application must call IDirect3DVertexBuffer9::Lock or IDirect3DIndexBuffer9::Lock with the appropriate flags.
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