[Bf-cycles] OSL problems in OSX

[Lukas Tönne]

@Dalai:

I don't know about RTTI in osl and llvm, but it has to be *dis*abled
in the Blender submodule for osl kernels. In the cmake file the
following CXX arguments are added (cycles/kernel/osl/CMakeLists.txt,
by RTTI_DISABLE_FLAGS variable defined in the main cycles cmake file):

"-fno-rtti -DBOOST_NO_RTTI -DBOOST_NO_TYPEID"

These would have to be added in scons as well i guess.

On Fri, Sep 7, 2012 at 9:35 AM, Dalai Felinto <dfelinto at gmail.com> wrote:
> Hi Brecht,
>
> Building llvm and osl with RTTI doesn't change anything (and is a pita ;)
>
> The class/struct inconsistency was fixed/committed, but doesn't do much
> other than remove some warnings.
>
> Thanks,
> Dalai
>
> On Sep 5, 2012 5:39 AM, "Jens Verwiebe" <info at jensverwiebe.de> wrote:
>>
>> I did some analysing and found ambiguos stuff:
>> http://www.pasteall.org/34979
>>
>> Jens
>>
>> Am 05.09.2012 um 12:26 schrieb Brecht Van Lommel
>> <brechtvanlommel at pandora.be>:
>>
>> Could this perhaps be related to RTTI? That can influence class size.
>> It seems RTTI was disabled in CMake but not in SCons.
>>
>> Brecht.
>>
>> On Tue, Sep 4, 2012 at 11:43 PM, Dalai Felinto <dfelinto at gmail.com> wrote:
>>
>> Hi there,
>>
>> I'm helping Jens to get OSL 1.2 to work on OSX as well. OSL is
>> building and Blender builds as well. However we are now stumbling into
>> a strange problem.
>>
>> When rendering with OSL we get the errors:
>> http://www.pasteall.org/34953
>> * note, Parameter 1 is the first parameter of the array (index 0)
>>
>>
>> The error comes from the register_closure() function in the OSL source
>> code, see below:
>>
>> //OpenShadingLanguage/src/liboslexec/shadingsys.cpp :~507
>> void ShadingSystemImpl::register_closure(...) {
>>    for (int i = 0; params && params[i].type != TypeDesc(); ++i) {
>>        if (params[i].key == NULL && params[i].type.size() !=
>> (size_t)params[i].field_size) {
>>            error ("Parameter %d of '%s' closure is assigned to a
>> field of incompatible size", i + 1, name);
>>
>>
>> This function is called from
>> //intern/cycles/kernel/osl/osl_closures.cpp:62
>>    ss->register_closure(name, id, params, prepare,
>> generic_closure_setup, generic_closure_compare);
>>
>> A breakpoint to this line and found out that the value of params[0] is
>> indeed problematic:
>> Basically params[0].type.size() is zero, while params[0].field_size is 12:
>> http://www.pasteall.org/34955
>>
>>
>> In Linux this is working though. Does anyone has any clues on what is
>> going wrong here?
>> If someone has a Linux debug of Blender with OSL could you please:
>>
>> b osl_closures.cpp:62
>> r
>> [in blender, render something ... it will get back to the debugger]
>> p params[0]
>> p params[0].type.size()
>> p params[0].field_size
>>
>> Thanks,
>> Dalai
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>>
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>>
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