From e37202002276b679c5241b2678af612552b06d2c Mon Sep 17 00:00:00 2001
From: "James Helferty (NVIDIA)" <jhelferty@nvidia.com>
Date: Tue, 10 Jun 2025 11:02:38 -0400
Subject: Fix IR layout of 3-element vectors in cbuffers for -fvk-use-dx-layout
 (#7282)

* Better handling for 16-byte boundary of d3d cbuffer

Fixes #6921

D3D cbuffers have slightly different packing rules that allow packing
vectors into a 16-byte slot at element alignments, except when
a field would cross a 16-byte boundary. In that case, we need to
realign the field to the next 16-byte boundary.

In particular, this impacts vec3s, which are not a power of two in
size and thus require slightly different alignment logic, compared to
std430 and std140. (Example: a float and float3 should fit together in
that order in a single slot.)

Adds test cases.

Adds documentation page for GLSL target
---
 docs/user-guide/toc.html | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'docs/user-guide/toc.html')

diff --git a/docs/user-guide/toc.html b/docs/user-guide/toc.html
index 1621d1da5..f559fec31 100644
--- a/docs/user-guide/toc.html
+++ b/docs/user-guide/toc.html
@@ -260,6 +260,21 @@
 <li data-link="wgsl-target-specific#specialization-constants"><span>Specialization Constants</span></li>
 </ul>
 </li>
+<li data-link="glsl-target-specific"><span>GLSL-Specific Functionalities</span>
+<ul class="toc_list">
+<li data-link="glsl-target-specific#combined-texture-sampler"><span>Combined Texture Sampler</span></li>
+<li data-link="glsl-target-specific#system-value-semantics"><span>System-Value Semantics</span></li>
+<li data-link="glsl-target-specific#discard-statement"><span>`discard` Statement</span></li>
+<li data-link="glsl-target-specific#hlsl-features-supported-in-glsl"><span>HLSL Features Supported in GLSL</span></li>
+<li data-link="glsl-target-specific#atomic-types"><span>Atomic Types</span></li>
+<li data-link="glsl-target-specific#buffer-types"><span>Buffer Types</span></li>
+<li data-link="glsl-target-specific#matrix-layout"><span>Matrix Layout</span></li>
+<li data-link="glsl-target-specific#entry-points"><span>Entry Points</span></li>
+<li data-link="glsl-target-specific#specialization-constants"><span>Specialization Constants</span></li>
+<li data-link="glsl-target-specific#attributes-and-layout-qualifiers"><span>Attributes and Layout Qualifiers</span></li>
+<li data-link="glsl-target-specific#glsl-specific-compiler-options"><span>GLSL-Specific Compiler Options</span></li>
+</ul>
+</li>
 </ul>
 </li>
 <li data-link="reference"><span>Reference</span>
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