Add slang shaders for additional samples

shaders/slang/bloom/phongpass.slang

@@ -0,0 +1,70 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct VSInput
+{
+    float4 Pos;
+    float2 UV;
+    float3 Color;
+    float3 Normal;
+};
+
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+    float3 Normal;
+    float2 UV;
+    float3 Color;
+    float3 ViewVec;
+    float3 LightVec;
+};
+
+struct UBO
+{
+    float4x4 projection;
+    float4x4 view;
+    float4x4 model;
+};
+ConstantBuffer<UBO> ubo;
+
+Sampler2D colorMapSampler;
+
+[shader("vertex")]
+VSOutput vertexMain(VSInput input)
+{
+    VSOutput output;
+    output.Normal = input.Normal;
+    output.Color = input.Color;
+    output.UV = input.UV;
+    output.Pos = mul(ubo.projection, mul(ubo.view, mul(ubo.model, input.Pos)));
+
+    float3 lightPos = float3(-5.0, -5.0, 0.0);
+    float4 pos = mul(ubo.view, mul(ubo.model, input.Pos));
+    output.Normal = mul((float4x3)mul(ubo.view, ubo.model), input.Normal).xyz;
+    output.LightVec = lightPos - pos.xyz;
+    output.ViewVec = -pos.xyz;
+    return output;
+}
+
+[shader("fragment")]
+float4 fragmentMain(VSOutput input)
+{
+	float3 ambient = float3(0.0f, 0.0f, 0.0f);
+
+	// Adjust light calculations for glow color
+	if ((input.Color.r >= 0.9) || (input.Color.g >= 0.9) || (input.Color.b >= 0.9))
+	{
+		ambient = input.Color * 0.25;
+	}
+
+	float3 N = normalize(input.Normal);
+	float3 L = normalize(input.LightVec);
+	float3 V = normalize(input.ViewVec);
+	float3 R = reflect(-L, N);
+	float3 diffuse = max(dot(N, L), 0.0) * input.Color;
+	float3 specular = pow(max(dot(R, V), 0.0), 8.0) * float3(0.75f, 0.75f, 0.75f);
+	return float4(ambient + diffuse + specular, 1.0);
+}