Re: [AD] 5.1?

[Pavel S. <sl...@ai...>]

Elias Pschernig wrote:
> On Mon, 2010-04-26 at 17:51 -0400, Pavel Sountsov wrote:
>> Why are they laid out that way? Firstly, there's speed issues. E.g. 
>> al_transform_transform now needs 12 multiplies, while a full 3D one 
>> would need 27.
> 
> Hm, given how slow the memory drawers are, how much of a difference
> would it make? For the OpenGL/D3D versions I assume no multiplications
> are ever done as it should be up to the shader HW.

This is of course true. The speed issue is a relatively minor point.

> 
>> Secondly, there's the point that A5 is a 2D library by 
>> default, and thus many bits of it (specifically the memory drawers both 
>> in the core and the primitives addon) just don't support it at this 
>> time. Primitives addon can be extended to handle them relatively easily, 
>> but the PARALLELOGRAM_MAP probably will need to be rewritten.
>>
> 
> What are the drawbacks of removing parallelogram_map completely?
> 

Effort will need to be expended to write a replacement. Or, effort will 
need to be expended to put the primitives addon into the allegro core.

-SiegeLord