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Added GLM_FORCE_INTRINSICS define

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Christophe Riccio
2019-01-11 12:58:31 +01:00
parent 47031aa4b7
commit ef9d65e0c6
6 changed files with 57 additions and 21 deletions
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manual.md
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@@ -25,7 +25,7 @@
+ [2.8. GLM\_FORCE\_INLINE: Force inline](#section2_8)
+ [2.9. GLM\_FORCE\_ALIGNED\_GENTYPES: Force GLM to enable aligned types](#section2_9)
+ [2.10. GLM\_FORCE\_DEFAULT\_ALIGNED\_GENTYPES: Force GLM to use aligned types by default](#section2_10)
+ [2.11. GLM\_FORCE\_SIMD\_**: Using SIMD optimizations](#section2_11)
+ [2.11. GLM\_FORCE\_INTRINSICS: Using SIMD optimizations](#section2_11)
+ [2.12. GLM\_FORCE\_PRECISION\_**: Default precision](#section2_12)
+ [2.13. GLM\_FORCE\_SINGLE\_ONLY: Removed explicit 64-bits floating point types](#section2_13)
+ [2.14. GLM\_FORCE\_SWIZZLE: Enable swizzle operators](#section2_14)
@@ -456,10 +456,10 @@ void foo()
*Note: GLM SIMD optimizations require the use of aligned types*
### <a name="section2_11"></a> 2.11. GLM\_FORCE\_SIMD\_**: Using SIMD optimizations
### <a name="section2_11"></a> 2.11. GLM\_FORCE\_INTRINSICS: Using SIMD optimizations
GLM provides some SIMD optimizations based on [compiler intrinsics](https://msdn.microsoft.com/en-us/library/26td21ds.aspx).
These optimizations will be automatically thanks to compiler arguments.
These optimizations will be automatically thanks to compiler arguments when `GLM_FORCE_INTRINSICS` is defined before including GLM files.
For example, if a program is compiled with Visual Studio using `/arch:AVX`, GLM will detect this argument and generate code using AVX instructions automatically when available.
It’s possible to avoid the instruction set detection by forcing the use of a specific instruction set with one of the fallowing define: