init

shaders/synchronization_2/hlsl/particle_integrate.comp.hlsl

@@ -0,0 +1,44 @@
+/* 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 Particle
+{
+    float4 pos;
+    float4 vel;
+};
+[[vk::binding(0, 0)]]
+RWStructuredBuffer<Particle> particles : register(u0);
+
+struct UBO
+{
+    float deltaT;
+    int particleCount;
+};
+[[vk::binding(1, 0)]]
+ConstantBuffer<UBO> ubo : register(b1);
+
+#define TIME_FACTOR 0.05
+
+[numthreads(256, 1, 1)]
+void main(uint3 GlobalInvocationID : SV_DispatchThreadID)
+{
+    int index = int(GlobalInvocationID.x);
+    float4 position = particles[index].pos;
+    float4 velocity = particles[index].vel;
+    position += ubo.deltaT * TIME_FACTOR * velocity;
+    particles[index].pos = position;
+}