slang.git/source/slang/slang-ir-layout.h, branch master

Introduce CDataLayout & -fvk-use-c-layout (#8136)

2025-08-21T05:47:18+00:00

Closes #8112. ~~The issue asks for a "C layout", but in this PR I use the term "CPU layout" because this naming was pre-existing in the codebase as `kCPULayoutRulesImpl_`. The primary purpose of this layout is to match CPU-side struct definitions with the shader side. I'm open to better naming suggestions, though.~~ Edit: switched back to using `CDataLayout` & `-fvk-use-c-layout`, as the CPU target depends on the object layout rules of existing CPU layout rules, but they're incompatible with actual shaders. So a new `kCLayoutRulesImpl_` was needed anyway. --------- Co-authored-by: Ellie Hermaszewska

Fix IR layout of 3-element vectors in cbuffers for -fvk-use-dx-layout (#7282)

2025-06-10T15:02:38+00:00

* 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

format

2024-10-29T06:49:26+00:00

* format * Minor test fixes * enable checking cpp format in ci

Implement `-fvk-use-dx-layout` (#4912)

2024-08-26T19:11:41+00:00

* Implement `-fvk-use-dx-layout` Fixes: #4126 Changes: * Added fvk-use-dx-layout * Modified `HLSLConstantBufferLayoutRulesImpl` for correctness (ex: Array is always 16 byte aligned) * Added kFXCShaderResourceLayoutRulesFamilyImpl and kFXCConstantBufferLayoutRulesFamilyImpl to handle fvk-use-dx-layout * Added `ConstantBufferLayoutRules` to manage constant buffer rules * Added `alignCompositeElementOfNonAggregate`/`alignCompositeElementOfAggregate` to handle forced alignment of composites for ConstantBuffers * `StructuredBuffer` rules are mostly equal to `scalar` layout, not much was needed to be changed to support this behavior. * seperate legacy constant buffer and how Slang does constant-buffer normally * undo an addition * remove accidental test * Address review and fix Address review and remove GLSL support since GLSL requires a seperate legalization (need to linearlize structs like with `legalizeMetalIR` to assign explicit offsets) * comments * remove aggregate and non-aggregate logic We don't need this distinction for the logic --------- Co-authored-by: Yong He

Refactor compiler option representations. (#3598)

2024-02-20T20:24:00+00:00

* Refactor compiler option representation. * Fix binary compatibility. * Add a test for specifying compiler options at link time. * Fix binary compatibility. * Fix binary compatibility. * Fix backward compatibility on matrix layout. * Fix. * Fix. * Fix. * Fix gfx. * Fix gfx. * Fix dynamic dispatch. * Polish.

GLSL Passthrough support for SSBO types (#3446)

2024-02-03T02:14:04+00:00

* GLSL Passthrough support for SSBO types * GLSL Passthrough support for SSBO types * Correctly apply glsl local size layout to entry points during lowering * Test for glsl layout correctness * typo * Reflect GLSL SSBO as raw buffers * Functional test for glsl ssbo * Allow allow glsl for render tests * Functional test for ssbo passthrough * Functional test for ssbo passthrough with spirv-direct * fix windows build error --------- Co-authored-by: Yong He

Use target-dependent pointer size in natural layout. (#3210)

2023-09-19T03:46:57+00:00

Co-authored-by: Yong He

Add SPIRV atomics intrinsics and fix buffer layout lowering. (#3170)

2023-08-31T20:49:40+00:00

* Fix atomics intrinsics and buffer layout lowering. * Fix. * Add more test. * Fix. --------- Co-authored-by: Yong He

Create storage types of different layouts for SPIRV emit. (#3116)

2023-08-17T05:47:35+00:00

* Create storage types of different layouts for SPIRV emit. * Fix. * Fix. * Fix. * Update expected failure list. --------- Co-authored-by: Yong He

Support `-fvk-use-gl-layout` for ByteAddressBuffer load/store. (#3068)

2023-08-08T20:54:05+00:00

* Support `-fvk-use-gl-layout` for ByteAddressBuffer load/store. * Fix. * Fix. * Add test for unaligned load. --------- Co-authored-by: Yong He