A Star

Recently I’ve found a nice piece of pseudo code for implementing A Star after searching through a few lesser or incorrect pseudo code passages:

My favorite thing about the pseudo code is that the closed list can be implemented with just a flag. The open list becomes the most Continue Reading →

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The Concept of Polymorphism

For a while I thought of many computer science terms as useless hype. For example, as said by Jon Blow in one of his recent videos, some terms can be vague or hard to recollect. Buzzwords. Polymorphism, semantics, encapsulation, instantiate, interface, API, functional, abstraction, indirection, blah blah blah. Reading too Continue Reading →

Freelist Concept

A freelist is a way of retrieving some kind of resource in an efficient manner. Usually a freelist is used when a memory allocation is needed, but searching for a free block should be fast. Freelists can be used inside of general purpose allocators, or embedded directly into an optimized Continue Reading →

SIMD – Matrix3x3 Transpose

Just recently I finished implementing my own personal SIMD math library using SSE intrinsics. There are two major resources for learning how to write effective SIMD code: DirectXMath (reference pages, you want to find the source code and read that too!) Designing Fast Cross-Platform SIMD Vector Libraries While inspecting the Continue Reading →