[Design Meeting] Add meeting minutes for 2025-02-04 (#381)

* Add minutes as agenda

* Add metting notes

* Updates based on feedback from @damyanp and @spall

docs/DesignMeetingMinutes/2025-02-04.md

@@ -0,0 +1,65 @@
+# Design Meeting Minutes: 2025/02/04
+
+> NOTE: Please read the [terms of participation](DesignMeetingTerms.txt)
+> ("Terms") prior to joining the Teams meeting.  You joining the Teams meeting
+> with Microsoft indicates your acknowledgement, agreement, and consent to these
+> Terms.  If you do not agree to these Terms, please do not join the meeting.
+>
+> If you intend to contribute code or other copyrightable materials (e.g.
+> written comments, tools, documentation, etc.)  to the hlsl specs repository,
+> you are required to sign a Contributor License Agreement (CLA).  For details,
+> visit https://cla.microsoft.com.
+
+## Administrivia
+* No topics
+
+## Issues
+* No marked issues
+* Action Item: @llvm-beanz to review issues for HLSL 202x
+
+## PRs
+
+### Carried Forward
+* [[0007] Big update to flesh out const instance methods](https://github.com/microsoft/hlsl-specs/pull/34)
+  * Action Item: @llvm-beanz update based on @tex3d's feedback
+  * Action Item: @pow2clk to review the PR and comment
+* [[0002] Specify the grammar formulations for attributes](https://github.com/microsoft/hlsl-specs/pull/65)
+  * Action Item: @pow2clk to review.
+* [[SM6.8] Add proposal for DXIL 1.8](https://github.com/microsoft/hlsl-specs/pull/77)
+  * This isn't really in a great shape, but it is useful documentation to not lose.
+  * Action Item: @llvm-beanz to merge
+* [[dxil] Proposal to add new debug printf dxil op](https://github.com/microsoft/hlsl-specs/pull/324)
+  * @pow2clk and @tex3d will review this in more detail.
+* [Rework hlsl-vector-type into two specs](https://github.com/microsoft/hlsl-specs/pull/361)
+  * Action Item: @llvm-beanz to review.
+
+### Current Business
+
+* [Add proposal for scalar layout for constant buffers](https://github.com/microsoft/hlsl-specs/pull/317)
+  * Action Item: @llvm-beanz to review updates from AMD
+* [[202y] Propose adding C++11-style constructors](https://github.com/microsoft/hlsl-specs/pull/325)
+  * Action Item: @farzonl & @V-FEXrt to review.
+* [[202x] Propose adding vk::SampledTexture* types](https://github.com/microsoft/hlsl-specs/pull/343)
+  * Action Item: @llvm-beanz to review.
+* [Add resource chapter documenting buffers and bindings](https://github.com/microsoft/hlsl-specs/pull/344)
+  * Action Item: @llvm-beanz to review.
+* [Specification language to describe flat conversions and aggregate splats](https://github.com/microsoft/hlsl-specs/pull/358)
+  * The PR needs revision based on feedback, but one outstanding question is
+    what do we name the cast?
+  * @llvm-beanz: Flat doesn't describe what the conversion does
+  * We had a lengthy discussion about @llvm-beanz's dislike of the "flat" term.
+  * Alternatives suggested: elementwise conversion, reshape conversion
+  * Action Item: @spall to update
+
+## Other Discussion
+
+* Effects Syntax support in HLSL 202x
+  * We have an issue to turn effects syntax usage into errors in HLSL 202x - [[202x] Remove HLSL Effects Syntax Support](https://github.com/microsoft/hlsl-specs/issues/380)
+  * This will potentially cause some source breakage for codebases that are shared between DX 10/11 and DX 12.
+  * There is at least one known case where DXC assumes valid C++11 syntax is an effects annotation
+    ([C++-style initialization of vectors (int2 x{0,1}) does not work, but compiles](https://github.com/microsoft/DirectXShaderCompiler/issues/7111)).
+  * Today, DXC ignores the effects annotation, which seems to users to be ignoring a valid intializer.
+  * This syntax is C++11 initialization syntax that is not intended to be supported in DXC (which is C++98-based), but will be supported in Clang.
+  * Proposed Solution:
+    * In DXC: Make all effects syntax parsing errors in HLSL 202x mode.
+    * In Clang: Make any effects-like syntax that is valid in modern C++ warn that it is a 202y extension.