Bitwise operators performance

Started by lomateron, Nov 22 2012 06:20 AM

HLSL

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#1 lomateron Members - Reputation: 197

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Posted 22 November 2012 - 06:20 AM

In HLSL I can write a multiplication,addition,etc in terms of bitwise operations.
What is faster?

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#2 Hodgman Moderators - Reputation: 13506

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Posted 22 November 2012 - 06:32 AM

The compiler knows that integer * 2 == integer << 2. If one is faster than the other, the compiler can/will substitute.

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