1 files changed, 36 insertions, 0 deletions
diff --git a/tests/bullet/src/BulletMultiThreaded/GpuSoftBodySolvers/OpenCL/OpenCLC/UpdatePositions.cl b/tests/bullet/src/BulletMultiThreaded/GpuSoftBodySolvers/OpenCL/OpenCLC/UpdatePositions.cl
new file mode 100644
index 00000000..ae7599a8
--- /dev/null
+++ b/tests/bullet/src/BulletMultiThreaded/GpuSoftBodySolvers/OpenCL/OpenCLC/UpdatePositions.cl
@@ -0,0 +1,36 @@
+MSTRINGIFY(
+
+//#define float3 float4
+
+__kernel void 
+updateVelocitiesFromPositionsWithoutVelocitiesKernel( 
+	const int numNodes,
+	const float isolverdt,
+	__global float4 * g_vertexPositions,
+	__global float4 * g_vertexPreviousPositions,
+	__global int * g_vertexClothIndices,
+	__global float * g_clothDampingFactor,
+	__global float4 * g_vertexVelocities,
+	__global float4 * g_vertexForces)
+
+{
+	int nodeID = get_global_id(0);
+	if( nodeID < numNodes )
+	{	
+		float3 position = g_vertexPositions[nodeID].xyz;
+		float3 previousPosition = g_vertexPreviousPositions[nodeID].xyz;
+		float3 velocity = g_vertexVelocities[nodeID].xyz;
+		int clothIndex = g_vertexClothIndices[nodeID];
+		float dampingFactor = g_clothDampingFactor[clothIndex];
+		float velocityCoefficient = (1.f - dampingFactor);
+		
+		float3 difference = position - previousPosition;
+				
+		velocity = difference*velocityCoefficient*isolverdt;		
+		
+		g_vertexVelocities[nodeID] = (float4)(velocity, 0.f);
+		g_vertexForces[nodeID] = (float4)(0.f, 0.f, 0.f, 0.f);								
+	}
+}
+
+);
+\ No newline at end of file