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<title>slang.git/tests/rewriter/type-splitting.slang, branch master</title>
<subtitle>Making it easier to work with shaders</subtitle>
<id>https://git.yummers.dev/slang.git/atom?h=master</id>
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<updated>2017-08-17T15:59:30+00:00</updated>
<entry>
<title>Add a flag to control type splitting</title>
<updated>2017-08-17T15:59:30+00:00</updated>
<author>
<name>Tim Foley</name>
<email>tfoley@nvidia.com</email>
</author>
<published>2017-08-17T15:59:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.yummers.dev/slang.git/commit/?id=d13bd05164c6a3d0b7ba95bb415f6bfac4cfcb70'/>
<id>urn:sha1:d13bd05164c6a3d0b7ba95bb415f6bfac4cfcb70</id>
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The `-split-mixed-types` flag can be provided to command-line `slangc`, and the `SLANG_COMPILE_FLAG_SPLIT_MIXED_TYPE` flag can be passed to `spSetCompileFlags`.
Either of these turns on a mode where Slang will split types that included both resource and non-resource fields.
The declaration of such a type will just drop the resource fields, while a variable declare using such a type turns into multiple declararations: one for the non-resource fields, and then one for each resource field (recursively).

This behavior was already implemented for GLSL support, and this change just adds a flag so that the user can turn it on unconditionally.

Caveats:

- This does not apply in "full rewriter" mode, which is what happens if the user doesn't use any `import`s. I could try to fix that, but it seems like in that mode people are asking to bypass as much of the compiler as possible.

- When it *does* apply, it applies to user code as well as library/Slang code. So this will potentially rewrite the user's own HLSL in ways they wouldn't expect. I don't see a great way around it, though.
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