From 88023aea669f258d66e53eab10215337a7f72853 Mon Sep 17 00:00:00 2001 From: Tim Foley Date: Thu, 19 Oct 2017 11:49:16 -0700 Subject: Reflection: allow querying of semantics on varying input/output (#224) This is functionality required to support a Falcor bug fix. Most of the code to compute the right semantic name/index for a parameter was already present. This change adds: - Storage for semantic name/index on every `VarLayout` - Note: this is wasteful and should be optimized later - A public API to query the semantic name/index - The contract is that this API returns `NULL` if the parameter had no semantic - A bit of work in `parameter-binding.cpp` to attach semantics to varying input/output when traversing varying parameters. - Note: this is intentionally set up so that it associates semantics even with non-leaf parameters, so that an API user can query the semantic of a `struct` parameter and know that its members will be assigned sequential semantic indices from its starting value. - Support for dumping this information in reflection tests One notable thing that I did *not* change here is that the reflection test fixture doesn't report information on the output of an entry point, even though it really should. That should be fixed in a separate change, though, because it would affect many of the expected outputs. --- tests/reflection/vertex-input-semantics.hlsl | 33 ++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 tests/reflection/vertex-input-semantics.hlsl (limited to 'tests/reflection/vertex-input-semantics.hlsl') diff --git a/tests/reflection/vertex-input-semantics.hlsl b/tests/reflection/vertex-input-semantics.hlsl new file mode 100644 index 000000000..87a8431bc --- /dev/null +++ b/tests/reflection/vertex-input-semantics.hlsl @@ -0,0 +1,33 @@ +//TEST:REFLECTION:-profile vs_4_0 -target hlsl + +// Confirm that we can generate reflection info for +// vertex shader input parameters, including those +// that have semantics, and including nesting +// via struct types. + +struct X +{ + float4 x0; + float4 x1; +}; + +struct B +{ + int4 b0; + X b1; +}; + +struct C +{ + X c0 : CX; + int4 c1 : CY; +}; + +float4 main( + float4 a : A, + B b : B, + C c) + : SV_Position +{ + return 0.0; +} \ No newline at end of file -- cgit v1.2.3