2012年11月21日 星期三

Stage3D Limitation and Optimization

Stage3D AGAL Limitation:
  • The VertexBuffer is limited to 65535 vertex.
  • The IndexBuffer is limited to 983040 index.
  • In theory, you could have up to 983040/3 = 327680 triangle in one draw call.
  • In particle(using quads), you could have up to 65535/4 = 16383 particle max per draw call.
  • Shaders length can only contain a maximum of 200 opcodes.
  • The drawTriangles limited to 32768 calls per present call.

Optimization:
  • reduce draw call.
  • reuse material and batch rendering.
  • upload minimum number of constants.

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