From 18012268ed6a315f2cae85c35030d5b1088c8ce9 Mon Sep 17 00:00:00 2001
From: Sascha Willems <webmaster@saschawillems.de>
Date: Thu, 8 Jun 2023 16:50:12 +0200
Subject: [PATCH] Added HLSL shaders for mesh shading sample

---
 shaders/hlsl/meshshader/meshshader.frag     |  15 ++++++
 shaders/hlsl/meshshader/meshshader.frag.spv | Bin 0 -> 368 bytes
 shaders/hlsl/meshshader/meshshader.mesh     |  50 ++++++++++++++++++++
 shaders/hlsl/meshshader/meshshader.mesh.spv | Bin 0 -> 2264 bytes
 shaders/hlsl/meshshader/meshshader.task     |  19 ++++++++
 shaders/hlsl/meshshader/meshshader.task.spv | Bin 0 -> 576 bytes
 6 files changed, 84 insertions(+)
 create mode 100644 shaders/hlsl/meshshader/meshshader.frag
 create mode 100644 shaders/hlsl/meshshader/meshshader.frag.spv
 create mode 100644 shaders/hlsl/meshshader/meshshader.mesh
 create mode 100644 shaders/hlsl/meshshader/meshshader.mesh.spv
 create mode 100644 shaders/hlsl/meshshader/meshshader.task
 create mode 100644 shaders/hlsl/meshshader/meshshader.task.spv

diff --git a/shaders/hlsl/meshshader/meshshader.frag b/shaders/hlsl/meshshader/meshshader.frag
new file mode 100644
index 00000000..d4e1e8de
--- /dev/null
+++ b/shaders/hlsl/meshshader/meshshader.frag
@@ -0,0 +1,15 @@
+/* Copyright (c) 2023, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct VSOutput
+{
+[[vk::location(0)]] float4 color : COLOR0;
+};
+
+float4 main(VSOutput input) : SV_TARGET
+{
+	return float4(input.color);
+}
\ No newline at end of file
diff --git a/shaders/hlsl/meshshader/meshshader.frag.spv b/shaders/hlsl/meshshader/meshshader.frag.spv
new file mode 100644
index 0000000000000000000000000000000000000000..93ce5e695fd5d9a5f11517d4cffdfc5c8129af99
GIT binary patch
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diff --git a/shaders/hlsl/meshshader/meshshader.mesh b/shaders/hlsl/meshshader/meshshader.mesh
new file mode 100644
index 00000000..840e009b
--- /dev/null
+++ b/shaders/hlsl/meshshader/meshshader.mesh
@@ -0,0 +1,50 @@
+/* Copyright (c) 2023, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct UBO
+{
+	float4x4 projection;
+	float4x4 model;
+	float4x4 view;
+};
+
+cbuffer ubo : register(b0) { UBO ubo; }
+
+struct VertexOutput
+{
+	float4 position: SV_Position;
+	float4 color: COLOR0;
+};
+
+static const float4 positions[3] = {
+	float4( 0.0, -1.0, 0.0, 1.0),
+	float4(-1.0,  1.0, 0.0, 1.0),
+	float4( 1.0,  1.0, 0.0, 1.0)
+};
+
+static const float4 colors[3] = {
+	float4(0.0, 1.0, 0.0, 1.0),
+	float4(0.0, 0.0, 1.0, 1.0),
+	float4(1.0, 0.0, 0.0, 1.0)
+};
+
+[outputtopology("triangle")]
+[numthreads(1, 1, 1)]
+void main(out indices uint3 triangles[1], out vertices VertexOutput vertices[3], uint3 DispatchThreadID : SV_DispatchThreadID)
+{
+	float4x4 mvp = mul(ubo.projection, mul(ubo.view, ubo.model));
+
+	float4 offset = float4(0.0, 0.0, (float)DispatchThreadID, 0.0);
+
+	SetMeshOutputCounts(3, 1);
+	for (uint i = 0; i < 3; i++) {
+		vertices[i].position = mul(mvp, positions[i] + offset);
+		vertices[i].color = colors[i];
+	}
+
+	SetMeshOutputCounts(3, 1);
+	triangles[0] = uint3(0, 1, 2);
+}
diff --git a/shaders/hlsl/meshshader/meshshader.mesh.spv b/shaders/hlsl/meshshader/meshshader.mesh.spv
new file mode 100644
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diff --git a/shaders/hlsl/meshshader/meshshader.task b/shaders/hlsl/meshshader/meshshader.task
new file mode 100644
index 00000000..3b3b524e
--- /dev/null
+++ b/shaders/hlsl/meshshader/meshshader.task
@@ -0,0 +1,19 @@
+/* Copyright (c) 2023, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct DummyPayLoad
+{ 
+    uint dummyData; 
+}; 
+
+// We don't use pay loads in this sample, but the fn call requires one
+groupshared DummyPayLoad dummyPayLoad;
+
+[numthreads(1,1,1)] 
+void main()
+{
+	DispatchMesh(3, 1, 1, dummyPayLoad);
+}
diff --git a/shaders/hlsl/meshshader/meshshader.task.spv b/shaders/hlsl/meshshader/meshshader.task.spv
new file mode 100644
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GIT binary patch
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