[Imstk-developers] How to compile shader code in CMake?

[Dzenan Zukic]

You can make the executable depend on the compiled shaders. And custom
command is used to compile them. Even though it is not necessary for
compilation, it is necessary for execution. And if shaders don't compile,
the executable will not run either so it is OK to raise an error during
build time. This makes life easier.

Dženan Zukić, PhD, Senior R&D Engineer, Kitware (Carrboro, N.C.)

On Thu, Aug 10, 2017 at 10:41 AM, Milef, Nicholas Boris <milefn at rpi.edu>
wrote:

> What I understand is that I need to make a custom target to attach this
> command to (is this correct?):
> https://stackoverflow.com/a/30734105
>
> The file I'm working in only has an executable, but the shaders don't need
> to be compiled before building the executable:
> https://gitlab.kitware.com/iMSTK/iMSTK/blob/master/
> Examples/Sandbox/CMakeLists.txt
> ------------------------------
> *From:* Dzenan Zukic [dzenan.zukic at kitware.com]
> *Sent:* Wednesday, August 09, 2017 10:13 PM
>
> *To:* Milef, Nicholas Boris
> *Cc:* imstk-developers at imstk.org
> *Subject:* Re: [Imstk-developers] How to compile shader code in CMake?
>
> Yes, CMake documentation is one of the worst. You should look for "cmake
> add_custom_command example", one of the first hits is this
> <https://stackoverflow.com/questions/13470499/cmake-add-custom-command-with-dependencies-from-a-different-directory>
> .
>
> Dženan Zukić, PhD, Senior R&D Engineer, Kitware (Carrboro, N.C.)
>
> On Wed, Aug 9, 2017 at 5:42 PM, Milef, Nicholas Boris <milefn at rpi.edu>
> wrote:
>
>> Actually, how would I use this command? Would I attach this to the
>> target, or should I run the .exe separately?
>>
>> I'm kind of confused by the documentation.
>> ------------------------------
>> *From:* Imstk-developers [imstk-developers-bounces at imstk.org] on behalf
>> of Milef, Nicholas Boris [milefn at rpi.edu]
>> *Sent:* Wednesday, August 09, 2017 4:17 PM
>> *To:* Dzenan Zukic
>> *Cc:* imstk-developers at imstk.org
>> *Subject:* Re: [Imstk-developers] How to compile shader code in CMake?
>>
>> Great! Thanks Dzenan!
>> ------------------------------
>> *From:* Dzenan Zukic [dzenan.zukic at kitware.com]
>> *Sent:* Wednesday, August 09, 2017 4:13 PM
>> *To:* Milef, Nicholas Boris
>> *Cc:* imstk-developers at imstk.org
>> *Subject:* Re: [Imstk-developers] How to compile shader code in CMake?
>>
>> You can add custom command:
>> https://cmake.org/cmake/help/v3.0/command/add_custom_command.html
>>
>> Dženan Zukić, PhD, Senior R&D Engineer, Kitware (Carrboro, N.C.)
>>
>> On Wed, Aug 9, 2017 at 4:09 PM, Milef, Nicholas Boris <milefn at rpi.edu>
>> wrote:
>>
>>> I need to compile the Vulkan shaders (from GLSL to SPIR-V) and I don't
>>> really want to add the SPIR-V shaders in the repo because they're binary
>>> (although they aren't very large).
>>>
>>> From command prompt, I run this (included with VulkanSDK):
>>> glslangvalidator -V mesh_frag.frag -o mesh_frag.spv
>>>
>>> Any ideas on how to do this?
>>>
>>> _______________________________________________
>>> Imstk-developers mailing list
>>> Imstk-developers at imstk.org
>>> http://public.kitware.com/mailman/listinfo/imstk-developers
>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/imstk-developers/attachments/20170810/76419b54/attachment.html>