Add slang shaders for additional samples

shaders/slang/geometryshader/mesh.slang

@@ -0,0 +1,58 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct VSInput
+{
+    float4 Pos;
+    float3 Normal;
+    float3 Color;
+};
+
+struct VSOutput
+{
+	float4 Pos : SV_POSITION;
+	float3 Normal;
+	float3 Color;
+	float3 ViewVec;
+	float3 LightVec;
+};
+
+struct UBO
+{
+    float4x4 projection;
+    float4x4 model;
+};
+ConstantBuffer<UBO> ubo;
+
+[shader("vertex")]
+VSOutput vertexMain(VSInput input)
+{
+    VSOutput output;
+    output.Normal = input.Normal;
+    output.Color = input.Color;
+    output.Pos = mul(ubo.projection, mul(ubo.model, input.Pos));
+
+    float4 pos = mul(ubo.model, float4(input.Pos.xyz, 1.0));
+    output.Normal = mul((float4x3)ubo.model, input.Normal).xyz;
+
+    float3 lightPos = float3(1.0f, -1.0f, 1.0f);
+    output.LightVec = lightPos.xyz - pos.xyz;
+    output.ViewVec = -pos.xyz;
+    return output;
+}
+
+[shader("fragment")]
+float4 fragmentMain(VSOutput input)
+{
+	float3 N = normalize(input.Normal);
+	float3 L = normalize(input.LightVec);
+	float3 V = normalize(input.ViewVec);
+	float3 R = reflect(-L, N);
+	float3 ambient = float3(0.1, 0.1, 0.1);
+	float3 diffuse = max(dot(N, L), 0.0) * float3(1.0, 1.0, 1.0);
+	float3 specular = pow(max(dot(R, V), 0.0), 16.0) * float3(0.75, 0.75, 0.75);
+	return float4((ambient + diffuse) * input.Color.rgb + specular, 1.0);
+}

shaders/slang/geometryshader/normaldebug.slang

@@ -0,0 +1,68 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct VSInput
+{
+    float3 Pos;
+    float3 Normal;
+};
+
+struct VSOutput
+{
+	float4 Pos : POSITION0;
+	float3 Normal;
+};
+
+struct GSOutput
+{
+	float4 Pos : SV_POSITION;
+	float3 Color;
+};
+
+struct UBO
+{
+    float4x4 projection;
+    float4x4 model;
+};
+ConstantBuffer<UBO> ubo;
+
+[shader("vertex")]
+VSOutput vertexMain(VSInput input)
+{
+    VSOutput output;
+    output.Normal = input.Normal;
+    output.Pos = float4(input.Pos.xyz, 1.0);
+    return output;
+}
+
+[shader("geometry")]
+[maxvertexcount(6)]
+void geometryMain(triangle VSOutput input[3], inout LineStream<GSOutput> outStream)
+{
+	float normalLength = 0.02;
+	for(int i=0; i<3; i++)
+	{
+		float3 pos = input[i].Pos.xyz;
+		float3 normal = input[i].Normal.xyz;
+
+		GSOutput output = (GSOutput)0;
+		output.Pos = mul(ubo.projection, mul(ubo.model, float4(pos, 1.0)));
+		output.Color = float3(1.0, 0.0, 0.0);
+		outStream.Append( output );
+
+		output.Pos = mul(ubo.projection, mul(ubo.model, float4(pos + normal * normalLength, 1.0)));
+		output.Color = float3(0.0, 0.0, 1.0);
+		outStream.Append( output );
+
+		outStream.RestartStrip();
+	}
+}
+
+[shader("fragment")]
+float4 fragmentMain(GSOutput input)
+{
+    return float4(input.Color, 1.0);
+}