From fdf061e278720ec066a1fac8f1f35a22e817bf2d Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Thu, 21 Nov 2024 14:07:23 -0800
Subject: Add datalayout for constant buffers. (#5608)

* Add datalayout for constant buffers.

* Fixes.

* Fix test.

* Fix glsl codegen.

* Update spirv-specific doc.

* Fix test.

* Fix binding in the presense of specialization constants.

* address comments.

* Add a test for constant buffer layout.
---
 tests/spirv/spec-constant-space.slang | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 tests/spirv/spec-constant-space.slang

(limited to 'tests/spirv/spec-constant-space.slang')

diff --git a/tests/spirv/spec-constant-space.slang b/tests/spirv/spec-constant-space.slang
new file mode 100644
index 000000000..b4dd865c7
--- /dev/null
+++ b/tests/spirv/spec-constant-space.slang
@@ -0,0 +1,17 @@
+// Test that use of specialization constants does not cause space 0 to be reserved.
+
+//TEST:SIMPLE(filecheck=CHECK): -target spirv
+
+// CHECK-NOT: DescriptorSet 1
+
+struct MyData { float4 val; RWStructuredBuffer<float> outputBuffer; }
+
+
+[vk::specialization_constant]
+const int kSpecializationConstant = 0;
+
+[NumThreads(1,1,1)]
+void main(ParameterBlock<MyData> g_data)
+{
+    g_data.outputBuffer[0] = g_data.val.x;
+}
\ No newline at end of file
-- 
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