X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=extensions%2Fgdx-bullet%2Fjni%2Fsrc%2Fbullet%2FBulletMultiThreaded%2FGpuSoftBodySolvers%2FDX11%2FHLSL%2FUpdateNodes.hlsl;fp=extensions%2Fgdx-bullet%2Fjni%2Fsrc%2Fbullet%2FBulletMultiThreaded%2FGpuSoftBodySolvers%2FDX11%2FHLSL%2FUpdateNodes.hlsl;h=a16d89439a25dd25729e0d2cb7f7836552a886e6;hb=cbbe5aa80ad83d5e8a2ce3bbb9ea73c869758265;hp=0000000000000000000000000000000000000000;hpb=f06b93d715a12eac3c572f5d7aaa9f13c40ac058;p=mikumikustudio%2Flibgdx-mikumikustudio.git

diff --git a/extensions/gdx-bullet/jni/src/bullet/BulletMultiThreaded/GpuSoftBodySolvers/DX11/HLSL/UpdateNodes.hlsl b/extensions/gdx-bullet/jni/src/bullet/BulletMultiThreaded/GpuSoftBodySolvers/DX11/HLSL/UpdateNodes.hlsl
new file mode 100644
index 000000000..a16d89439
--- /dev/null
+++ b/extensions/gdx-bullet/jni/src/bullet/BulletMultiThreaded/GpuSoftBodySolvers/DX11/HLSL/UpdateNodes.hlsl
@@ -0,0 +1,49 @@
+MSTRINGIFY(
+
+cbuffer UpdateVelocitiesFromPositionsWithVelocitiesCB : register( b0 )
+{
+	int numNodes;
+	float isolverdt;
+	int padding1;
+	int padding2;
+};
+
+
+StructuredBuffer<float4> g_vertexPositions : register( t0 );
+StructuredBuffer<float4> g_vertexPreviousPositions : register( t1 );
+StructuredBuffer<int> g_vertexClothIndices : register( t2 );
+StructuredBuffer<float> g_clothVelocityCorrectionCoefficients : register( t3 );
+StructuredBuffer<float> g_clothDampingFactor : register( t4 );
+
+RWStructuredBuffer<float4> g_vertexVelocities : register( u0 );
+RWStructuredBuffer<float4> g_vertexForces : register( u1 );
+
+
+[numthreads(128, 1, 1)]
+void 
+updateVelocitiesFromPositionsWithVelocitiesKernel( uint3 Gid : SV_GroupID, uint3 DTid : SV_DispatchThreadID, uint3 GTid : SV_GroupThreadID, uint GI : SV_GroupIndex )
+{
+	int nodeID = DTid.x;
+	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 velocityCorrectionCoefficient = g_clothVelocityCorrectionCoefficients[clothIndex];
+		float dampingFactor = g_clothDampingFactor[clothIndex];
+		float velocityCoefficient = (1.f - dampingFactor);
+		
+		float3 difference = position - previousPosition;
+				
+		velocity += difference*velocityCorrectionCoefficient*isolverdt;
+		
+		// Damp the velocity
+		velocity *= velocityCoefficient;
+		
+		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