init

shaders/conditional_rendering/hlsl/model.frag.hlsl

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+/* Copyright (c) 2024, Sascha Willems
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 the "License";
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+    [[vk::location(0)]] float3 Normal : NORMAL0;
+    [[vk::location(1)]] float3 Color : COLOR0;
+    [[vk::location(2)]] float3 ViewVec : TEXCOORD0;
+    [[vk::location(3)]] float3 LightVec : TEXCOORD1;
+};
+
+float4 main(VSOutput input) : SV_TARGET0
+{
+    float3 N = normalize(input.Normal);
+    float3 L = normalize(input.LightVec);
+    float3 V = normalize(input.ViewVec);
+    float3 R = reflect(-L, N);
+    float3 ambient = (0.25).xxx;
+    float3 diffuse = max(dot(N, L), 0.0).xxx;
+    float3 specular = (pow(max(dot(R, V), 0.0), 16.0)).xxx * 0.75;
+    return float4((ambient + diffuse) * input.Color + specular, 1.0);
+}

shaders/conditional_rendering/hlsl/model.vert.hlsl

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+/* Copyright (c) 2024, Sascha Willems
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 the "License";
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+struct VSInput
+{
+    [[vk::location(0)]] float3 Pos : POSITION0;
+    [[vk::location(1)]] float3 Normal : NORMAL0;
+};
+
+struct UBO
+{
+    float4x4 projection;
+    float4x4 view;
+};
+[[vk::binding(0, 0)]]
+ConstantBuffer<UBO> ubo : register(b0);
+
+struct PushConstants
+{
+    float4x4 model;
+    float4 color;
+};
+[[vk::push_constant]] PushConstants push_constants;
+
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+    [[vk::location(0)]] float3 Normal : NORMAL0;
+    [[vk::location(1)]] float3 Color : COLOR0;
+    [[vk::location(2)]] float3 ViewVec : TEXCOORD0;
+    [[vk::location(3)]] float3 LightVec : TEXCOORD1;
+};
+
+VSOutput main(VSInput input)
+{
+    VSOutput output = (VSOutput) 0;
+    float4 localPos = mul(ubo.view, mul(push_constants.model, float4(input.Pos, 1.0)));   
+    output.Normal = input.Normal;
+    output.Color = push_constants.color.rgb;
+    output.Pos = mul(ubo.projection, localPos);
+    const float3 lightPos = float3(10.0, -10.0, 10.0);
+    output.LightVec = lightPos - localPos.xyz;
+    output.ViewVec = -localPos.xyz;
+    return output;
+}