c# - 为什么 VertexBuffer 比 DynamicVertexBuffer 快

Question

我一直在 Windows Phone 7 上进行一些 XNA 编程 (DirectX)，并注意到 VertexBuffer 类比 DynamicVertexBuffer 类快 30 倍。无论如何，它们之间有什么区别？为什么在使用 VertexBuffer 时速度显着提高？

Answer 1

MSDN entry for the DynamicVertexBuffer Class状态:

" Use DynamicVertexBuffer for dynamic vertex arrays and VertexBuffer for non-dynamic vertex arrays...In situations where your game frequently modifies a vertex buffer, it is recommended that the buffer be instantiated or derived from DynamicVertexBuffer instead of the VertexBuffer class. DynamicVertexBuffer is optimized for frequent vertex data modification."

因此，这大概是固定分配数组表示与动态列表之间的通常权衡。