Question 1

Handmade Math vs GLM: which is better?

Accepted Answer

Handmade Math is simpler and public domain, ideal for lightweight C/C++ projects, while GLM offers more features and a larger ecosystem but is C++-only and under a different license. Choose Handmade Math for maximum flexibility and minimal dependencies, or GLM for comprehensive out-of-the-box functionality.

Question 2

How to configure Handmade Math to use degrees instead of radians?

Accepted Answer

Set the HMM_USE_DEGREES preprocessor macro before including the header; the README notes it supports radians, degrees, or turns via configuration. Check the header comment for details on available options like HMM_USE_TURNS.

Question 3

Can Handmade Math work with both OpenGL and DirectX?

Accepted Answer

Yes, it includes variants for left- and right-handed conventions and different NDC ranges, making it adaptable to OpenGL (typically right-handed) and DirectX (left-handed). You'll need to select the appropriate function variants like HMM_Perspective_RH or HMM_Perspective_LH.

Question 4

What's the performance like in Handmade Math?

Accepted Answer

It's lightweight with static inline functions, suitable for most game dev, but lacks SIMD optimizations or GPU acceleration found in heavier libraries. For high-performance needs, you might need to augment it or choose a more optimized alternative.

Question 5

How to handle matrix multiplication in Handmade Math?

Accepted Answer

Use functions like HMM_MulM4V4 for matrix-vector multiplication; matrices are column-major with column vectors, so operations follow M * V convention. Refer to the README's FAQ on conventions for details on row vs. column major.

Question 6

Is Handmade Math good for beginners in graphics programming?

Accepted Answer

It's simple to integrate due to the single-header design, but the lack of tutorials and advanced features might require more self-directed learning compared to libraries with better documentation. Ideal for those comfortable with C/C++ basics.

Handmade Math

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