5 replies to this topic

[sepul]

I'm getting exceptions in my SSE code, where the script is trying to do something with Vector3 (which is supposed to be 16-byte aligned)

here is an expample :

__declspec(align(16))  Vec3 ...

in angelcode, vec3 is binded with (asOBJ_VALUE | asOBJ_APP_CLASS_CDAK) flags

engine->RegisterObjectType( "vec3", sizeof(Vec3), asOBJ_VALUE | asOBJ_APP_CLASS_CDAK );

later on, I get exceptions with my math operations that use SSE (xmm loads)

does angelcode support aligned allocation from it's stack ?

[Andreas Jonsson]

Not yet. However, you can register the vector3 type as a scoped reference type. This type is treated like a value type in the script, but is allocated on the heap where the application can guarantee the proper memory alignment.

I recommend combining this with memory pooling, so the application won't do a memory allocation for each vector3 instance that is used in the script.

[sepul]

thanks, I'll do the workaround .
however, do you consider adding this feature for the next release ?

[Andreas Jonsson]

Probably not for the next release, but yes, I plan to add it in the future.

[viepr08v10]

Has this feature of angelscipt been revisited lately, it would be really nice to have right know for a project I'm working on?

Edited by viepr08v10, 01 January 2013 - 03:13 AM.

[Andreas Jonsson]

Not yet. Scoped reference types are still the way to work with types that have specific memory alignment requirements.

 

Regards,

Andreas