From 2886bc35e7b023370a8b8d56d78e5335eee2eb98 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Fri, 16 Apr 2021 10:35:42 -0700
Subject: Add Hello world example. (#1797)

---
 examples/triangle/shaders.slang | 66 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 examples/triangle/shaders.slang

(limited to 'examples/triangle/shaders.slang')

diff --git a/examples/triangle/shaders.slang b/examples/triangle/shaders.slang
new file mode 100644
index 000000000..fe35db9c8
--- /dev/null
+++ b/examples/triangle/shaders.slang
@@ -0,0 +1,66 @@
+// shaders.slang
+
+//
+// This file provides a simple vertex and fragment shader that can be compiled
+// using Slang. This code should also be valid as HLSL, and thus it does not
+// use any of the new language features supported by Slang.
+//
+
+// Uniform data to be passed from application -> shader.
+cbuffer Uniforms
+{
+    float4x4 modelViewProjection;
+}
+
+// Per-vertex attributes to be assembled from bound vertex buffers.
+struct AssembledVertex
+{
+    float3	position : POSITION;
+    float3	color    : COLOR;
+};
+
+// Output of the vertex shader, and input to the fragment shader.
+struct CoarseVertex
+{
+    float3 color;
+};
+
+// Output of the fragment shader
+struct Fragment
+{
+    float4 color;
+};
+
+// Vertex  Shader
+
+struct VertexStageOutput
+{
+    CoarseVertex    coarseVertex    : CoarseVertex;
+    float4          sv_position     : SV_Position;
+};
+
+[shader("vertex")]
+VertexStageOutput vertexMain(
+    AssembledVertex assembledVertex)
+{
+    VertexStageOutput output;
+
+    float3 position = assembledVertex.position;
+    float3 color    = assembledVertex.color;
+
+    output.coarseVertex.color = color;
+    output.sv_position = mul(modelViewProjection, float4(position, 1.0));
+
+    return output;
+}
+
+// Fragment Shader
+
+[shader("fragment")]
+float4 fragmentMain(
+    CoarseVertex coarseVertex : CoarseVertex) : SV_Target
+{
+    float3 color = coarseVertex.color;
+
+    return float4(color, 1.0);
+}
-- 
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