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shaders/synchronization_2/glsl/particle_integrate.comp

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+#version 450
+/* Copyright (c) 2019-2024, 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
+{
+	vec4 pos;
+	vec4 vel;
+};
+
+// Binding 0 : Position storage buffer
+layout(std140, binding = 0) buffer Pos 
+{
+   Particle particles[ ];
+};
+
+layout (local_size_x_id = 0) in;
+
+layout (binding = 1) uniform UBO 
+{
+	float deltaT;
+	int particleCount;
+} ubo;
+
+#define TIME_FACTOR 0.05
+
+void main() 
+{
+	int index = int(gl_GlobalInvocationID);
+	vec4 position = particles[index].pos;
+	vec4 velocity = particles[index].vel;
+	position += ubo.deltaT * TIME_FACTOR * velocity;
+	particles[index].pos = position;
+}