Add the GPU rigid body pipeline from https://github.com/erwincoumans/experiments as a Bullet 3.x preview for Bullet 2.80

2012-03-05 00:54:32 +00:00
parent 73c4646b40
commit 571af41cf6
257 changed files with 55106 additions and 0 deletions
--- a/Extras/RigidBodyGpuPipeline/opencl/primitives/AdlPrimitives/Search/BoundSearchKernels.hlsl
+++ b/Extras/RigidBodyGpuPipeline/opencl/primitives/AdlPrimitives/Search/BoundSearchKernels.hlsl
@@ -0,0 +1,104 @@
+/*
+Copyright (c) 2012 Advanced Micro Devices, Inc.  
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+//Originally written by Takahiro Harada
+
+
+typedef uint u32;
+
+#define GET_GROUP_IDX groupIdx.x
+#define GET_LOCAL_IDX localIdx.x
+#define GET_GLOBAL_IDX globalIdx.x
+#define GROUP_LDS_BARRIER GroupMemoryBarrierWithGroupSync()
+#define DEFAULT_ARGS uint3 globalIdx : SV_DispatchThreadID, uint3 localIdx : SV_GroupThreadID, uint3 groupIdx : SV_GroupID
+#define AtomInc(x) InterlockedAdd(x, 1)
+#define AtomInc1(x, out) InterlockedAdd(x, 1, out)
+
+
+
+typedef struct
+{
+	u32 m_key; 
+	u32 m_value;
+}SortData;
+
+
+
+cbuffer SortCB : register( b0 )
+{
+	u32 m_nSrc;
+	u32 m_nDst;
+	u32 m_padding[2];
+};
+
+
+StructuredBuffer<SortData> src : register( t0 );
+RWStructuredBuffer<u32> dst : register( u0 );
+
+
+[numthreads(64, 1, 1)]
+void SearchSortDataLowerKernel( DEFAULT_ARGS )
+{
+	int gIdx = GET_GLOBAL_IDX;
+	u32 nSrc = m_nSrc;
+	u32 nDst = m_nDst;
+
+	if( gIdx < nSrc )
+	{
+		SortData iData;
+		SortData jData;
+		if( gIdx==0 ) iData.m_key = iData.m_value = (u32)-1;
+		else iData = src[gIdx-1];
+
+		if( gIdx==nSrc ) jData.m_key = jData.m_value = nDst;
+		else jData = src[gIdx];
+
+		if( iData.m_key != jData.m_key )
+		{
+//			for(u32 k=iData.m_key+1; k<=min(jData.m_key, nDst-1); k++)
+			u32 k = jData.m_key;
+			{
+				dst[k] = gIdx;
+			}
+		}
+	}
+}
+
+[numthreads(64, 1, 1)]
+void SearchSortDataUpperKernel( DEFAULT_ARGS )
+{
+	int gIdx = GET_GLOBAL_IDX;
+	u32 nSrc = m_nSrc;
+	u32 nDst = m_nDst;
+
+	if( gIdx < nSrc+1 )
+	{
+		SortData iData;
+		SortData jData;
+		if( gIdx==0 ) iData.m_key = iData.m_value = 0;
+		else iData = src[gIdx-1];
+
+		if( gIdx==nSrc ) jData.m_key = jData.m_value = nDst;
+		else jData = src[gIdx];
+
+		if( iData.m_key != jData.m_key )
+		{
+//			for(u32 k=iData.m_key; k<min(jData.m_key, nDst); k++)
+			u32 k = iData.m_key;
+			{
+				dst[k] = gIdx;
+			}
+		}
+	}
+}
+