From 3dfe2108cfab31ba3ee5527e217d0d8e99a51162 Mon Sep 17 00:00:00 2001
From: git perforce import user <a@b>
Date: Tue, 25 Oct 2016 12:29:14 -0600
Subject: Initial commit: PhysX 3.4.0 Update @ 21294896 APEX 1.4.0 Update @
 21275617

[CL 21300167]
---
 .../renderer/src/RendererInstanceBuffer.cpp        | 140 +++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 PhysX_3.4/Samples/SampleFramework/renderer/src/RendererInstanceBuffer.cpp

(limited to 'PhysX_3.4/Samples/SampleFramework/renderer/src/RendererInstanceBuffer.cpp')

diff --git a/PhysX_3.4/Samples/SampleFramework/renderer/src/RendererInstanceBuffer.cpp b/PhysX_3.4/Samples/SampleFramework/renderer/src/RendererInstanceBuffer.cpp
new file mode 100644
index 00000000..e745723f
--- /dev/null
+++ b/PhysX_3.4/Samples/SampleFramework/renderer/src/RendererInstanceBuffer.cpp
@@ -0,0 +1,140 @@
+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2016 NVIDIA Corporation. All rights reserved.
+#include <RendererInstanceBuffer.h>
+#include <RendererInstanceBufferDesc.h>
+
+using namespace SampleRenderer;
+
+PxU32 RendererInstanceBuffer::getFormatByteSize(Format format)
+{
+	PxU32 size = 0;
+	switch(format)
+	{
+	case FORMAT_FLOAT1: size = sizeof(float)*1; break;
+	case FORMAT_FLOAT2: size = sizeof(float)*2; break;
+	case FORMAT_FLOAT3: size = sizeof(float)*3; break;
+	case FORMAT_FLOAT4: size = sizeof(float)*4; break;
+	default: break;
+	}
+	RENDERER_ASSERT(size, "Unable to determine size of Format.");
+	return size;
+}
+
+RendererInstanceBuffer::RendererInstanceBuffer(const RendererInstanceBufferDesc &desc) :
+RendererInteropableBuffer(desc.registerInCUDA, desc.interopContext),
+	m_hint(desc.hint)
+{
+	m_maxInstances     = 0;
+	m_stride           = 0;
+	m_lockedBuffer     = 0;
+	m_numSemanticLocks = 0;
+	for(PxU32 i=0; i<NUM_SEMANTICS; i++)
+	{
+		Format format = desc.semanticFormats[i];
+		if(format < NUM_FORMATS)
+		{
+			SemanticDesc &sm  = m_semanticDescs[i];
+			sm.format         = format;
+			sm.offset         = m_stride;
+			m_stride         += getFormatByteSize(format);
+		}
+	}
+}
+
+RendererInstanceBuffer::~RendererInstanceBuffer(void)
+{
+	RENDERER_ASSERT(m_lockedBuffer==0 && m_numSemanticLocks==0, "InstanceBuffer had outstanding locks during destruction!");
+}
+
+RendererInstanceBuffer::Hint RendererInstanceBuffer::getHint(void) const
+{
+	return m_hint;
+}
+
+RendererInstanceBuffer::Format RendererInstanceBuffer::getFormatForSemantic(Semantic semantic) const
+{
+	return m_semanticDescs[semantic].format;
+}
+
+PxU32 SampleRenderer::RendererInstanceBuffer::getMaxInstances(void) const
+{
+	return m_maxInstances;
+}
+
+PxU32  RendererInstanceBuffer::getOffsetForSemantic(Semantic semantic) const
+{
+		return m_semanticDescs[semantic].offset;
+}
+
+void *RendererInstanceBuffer::lockSemantic(Semantic semantic, PxU32 &stride)
+{
+	void *semanticBuffer = 0;
+	RENDERER_ASSERT(semantic < NUM_SEMANTICS, "Invalid InstanceBuffer Semantic!");
+	if(semantic < NUM_SEMANTICS)
+	{
+		SemanticDesc &sm = m_semanticDescs[semantic];
+		RENDERER_ASSERT(!sm.locked,              "InstanceBuffer Semantic already locked.");
+		RENDERER_ASSERT(sm.format < NUM_FORMATS, "InstanceBuffer Semantic format not valid.");
+		if(!sm.locked && sm.format < NUM_FORMATS)
+		{
+			if(!m_lockedBuffer && !m_numSemanticLocks)
+			{
+				m_lockedBuffer = lock();
+			}
+			RENDERER_ASSERT(m_lockedBuffer, "Unable to lock InstanceBuffer!");
+			if(m_lockedBuffer)
+			{
+				m_numSemanticLocks++;
+				sm.locked        = true;
+				semanticBuffer   = ((PxU8*)m_lockedBuffer) + sm.offset;
+				stride           = m_stride;
+			}
+		}
+	}
+	return semanticBuffer;
+}
+
+void RendererInstanceBuffer::unlockSemantic(Semantic semantic)
+{
+	RENDERER_ASSERT(semantic < NUM_SEMANTICS, "Invalid InstanceBuffer Semantic!");
+	if(semantic < NUM_SEMANTICS)
+	{
+		SemanticDesc &sm = m_semanticDescs[semantic];
+		RENDERER_ASSERT(m_lockedBuffer && m_numSemanticLocks && sm.locked, "Trying to unlock a semantic that was not locked.");
+		if(m_lockedBuffer && m_numSemanticLocks && sm.locked)
+		{
+			sm.locked = false;
+			m_numSemanticLocks--;
+		}
+		if(m_lockedBuffer && m_numSemanticLocks == 0)
+		{
+			unlock();
+			m_lockedBuffer = 0;
+		}
+	}
+}
+
-- 
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