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Re: [Public WebGL] Typed WebGLArray sequence parameter types
- To: Vladimir Vukicevic <firstname.lastname@example.org>
- Subject: Re: [Public WebGL] Typed WebGLArray sequence parameter types
- From: Kenneth Russell <email@example.com>
- Date: Tue, 22 Dec 2009 09:28:18 -0800
- Cc: firstname.lastname@example.org
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On Mon, Dec 21, 2009 at 10:35 PM, Vladimir Vukicevic
> On 12/21/2009 8:38 PM, Shiki Okasaka wrote:
>> Is this possible to modify typed WebGLArray sequence parameter types
>> in the IDL definitions as below?
>> * WebGLByteArray:
>> sequence<long> -> sequence<octet>
>> * WebGLUnsignedByteArray:
>> sequence<unsigned long> -> sequence<octet>
>> * WebGLShortArray:
>> sequence<long> -> sequence<short>
>> * WebGLUnsignedShortArray:
>> sequence<unsigned long> -> sequence<unsigned short>
>> This change would make the generated interfaces for statically typed
>> languages (e.g. Java) more useful.
>> Note currently Web IDL does not have a primitive type for 8-bit signed
>> integer values. If it is useful for WebGL, maybe we can propose an
>> addition of it to Web IDL as Geolocation WG requested to add 'double'
>> in addition to 'float' .
> Yep, that's the main reason why long/unsigned long are used instead of octet
> -- if octet was used, then it becomes impossible to actually specify signed
> 8-bit integers. For short, we decided to follow the same convention.
> However, maybe a workaround would be to add a typedef somewhere for our own
> signed_octet type, by default typedef'd to unsigned long, but with a
> statement in the spec saying that this should be a signed 8 bit type if the
> language supports it?
Sounds like a good workaround.
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