From 880b48485f797439a3c098582bb207b8d0fe3afc Mon Sep 17 00:00:00 2001
From: Sascha Willems <webmaster@saschawillems.de>
Date: Fri, 28 Mar 2025 15:16:45 +0100
Subject: [PATCH] Slang shaders for buffer device address example

---
 .../slang/bufferdeviceaddress/cube.frag.slang | 20 ++++++++
 .../slang/bufferdeviceaddress/cube.vert.slang | 47 +++++++++++++++++++
 shaders/slang/compileshaders.py               |  2 +-
 3 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 shaders/slang/bufferdeviceaddress/cube.frag.slang
 create mode 100644 shaders/slang/bufferdeviceaddress/cube.vert.slang

diff --git a/shaders/slang/bufferdeviceaddress/cube.frag.slang b/shaders/slang/bufferdeviceaddress/cube.frag.slang
new file mode 100644
index 00000000..05b8e1d0
--- /dev/null
+++ b/shaders/slang/bufferdeviceaddress/cube.frag.slang
@@ -0,0 +1,20 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+ [[vk::binding(0, 0)]]
+Sampler2D samplerColorMap;
+
+struct VSInput
+{
+    [[vk::location(1)]] float3 Color;
+    [[vk::location(2)]] float2 UV;
+};
+
+[shader("fragment")]
+float4 main(VSInput input)
+{
+    return samplerColorMap.Sample(input.UV) * float4(input.Color, 1.0);
+}
\ No newline at end of file
diff --git a/shaders/slang/bufferdeviceaddress/cube.vert.slang b/shaders/slang/bufferdeviceaddress/cube.vert.slang
new file mode 100644
index 00000000..2d419f5a
--- /dev/null
+++ b/shaders/slang/bufferdeviceaddress/cube.vert.slang
@@ -0,0 +1,47 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct VSInput
+{
+    [[vk::location(0)]] float3 Pos;
+    [[vk::location(1)]] float3 Normal;
+    [[vk::location(2)]] float2 UV;
+    [[vk::location(3)]] float3 Color;
+};
+
+struct MatrixReference {
+    float4x4 matrix;
+};
+
+struct PushConsts {
+    // Pointer to the buffer with the scene's MVP matrix
+    ConstBufferPointer<MatrixReference> sceneDataReference;
+    // Pointer to the buffer for the data for each model
+    ConstBufferPointer<MatrixReference> modelDataReference;
+};
+[[vk::push_constant]] PushConsts pushConstants;
+
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+    [[vk::location(0)]] float3 Normal;
+    [[vk::location(1)]] float3 Color;
+    [[vk::location(2)]] float2 UV;
+};
+
+[shader("vertex")]
+VSOutput main(VSInput input) 
+{
+    MatrixReference sceneData = pushConstants.sceneDataReference.get();
+    MatrixReference modelData = pushConstants.modelDataReference.get();
+
+    VSOutput output;
+    output.Normal = input.Normal;
+    output.Color = input.Color;
+    output.UV = input.UV;
+    output.Pos = mul(sceneData.matrix, mul(modelData.matrix, float4(input.Pos.xyz, 1.0)));
+    return output;
+}
\ No newline at end of file
diff --git a/shaders/slang/compileshaders.py b/shaders/slang/compileshaders.py
index 2f5e2e83..cd3f54c1 100644
--- a/shaders/slang/compileshaders.py
+++ b/shaders/slang/compileshaders.py
@@ -41,6 +41,6 @@ for root, dirs, files in os.walk(dir_path):
             input_file = os.path.join(root, file)
             output_file = input_file + ".spv"
             output_file = output_file.replace(".slang", "")
-            res = subprocess.call("%s %s -profile spirv_1_4 -target spirv -o %s -entry %s" % (compiler_path, input_file, output_file, "main"), shell=True)
+            res = subprocess.call("%s %s -profile spirv_1_4 -matrix-layout-column-major -target spirv -o %s -entry %s" % (compiler_path, input_file, output_file, "main"), shell=True)
             if res != 0:
                 sys.exit(res)
\ No newline at end of file