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/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA CORPORATION and its licensors retain all intellectual property
* and proprietary rights in and to this software, 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.
*/
#include "PxConvexMeshGeometryDTO.h"
#include "PxMeshScaleDTO.h"
#include "NvBlastAssert.h"
#include "NvBlastExtKJPxInputStream.h"
#include "NvBlastExtKJPxOutputStream.h"
#include "PxConvexMeshDesc.h"
#include "NvBlastExtSerialization.h"
#include "PxVec3.h"
#include <algorithm>
#include "PxPhysics.h"
namespace Nv
{
namespace Blast
{
physx::PxCooking* PxConvexMeshGeometryDTO::Cooking = nullptr;
physx::PxPhysics* PxConvexMeshGeometryDTO::Physics = nullptr;
bool PxConvexMeshGeometryDTO::serialize(Nv::Blast::Serialization::PxConvexMeshGeometry::Builder builder, const physx::PxConvexMeshGeometry * poco)
{
PxMeshScaleDTO::serialize(builder.getScale(), &poco->scale);
//TODO: Use cooking.cookConvexMesh to cook the mesh to a stream - then get that backing buffer and put it into the Data field
physx::PxConvexMeshDesc desc;
desc.points.data = poco->convexMesh->getVertices();
desc.points.count = poco->convexMesh->getNbVertices();
desc.points.stride = sizeof(physx::PxVec3);
std::vector<uint32_t> indicesScratch;
std::vector<physx::PxHullPolygon> hullPolygonsScratch;
hullPolygonsScratch.resize(poco->convexMesh->getNbPolygons());
uint32_t indexCount = 0;
for (uint32_t i = 0; i < hullPolygonsScratch.size(); i++)
{
physx::PxHullPolygon polygon;
poco->convexMesh->getPolygonData(i, polygon);
if (polygon.mNbVerts)
{
indexCount = std::max<uint32_t>(indexCount, polygon.mIndexBase + polygon.mNbVerts);
}
}
indicesScratch.resize(indexCount);
for (uint32_t i = 0; i < hullPolygonsScratch.size(); i++)
{
physx::PxHullPolygon polygon;
poco->convexMesh->getPolygonData(i, polygon);
for (uint32_t j = 0; j < polygon.mNbVerts; j++)
{
indicesScratch[polygon.mIndexBase + j] = poco->convexMesh->getIndexBuffer()[polygon.mIndexBase + j];
}
hullPolygonsScratch[i] = polygon;
}
desc.indices.count = indexCount;
desc.indices.data = indicesScratch.data();
desc.indices.stride = sizeof(uint32_t);
desc.polygons.count = poco->convexMesh->getNbPolygons();
desc.polygons.data = hullPolygonsScratch.data();
desc.polygons.stride = sizeof(physx::PxHullPolygon);
std::vector<unsigned char> buffer;
buffer.resize(16 * 1024 * 1024); // No idea how much memory is needed! Allocate 16MB
kj::ArrayPtr<unsigned char> bufferArray(buffer.data(), buffer.size());
Nv::Blast::ExtKJPxOutputStream outputStream(bufferArray);
bool cookResult = Cooking->cookConvexMesh(desc, outputStream);
if (!cookResult)
{
return false;
}
kj::ArrayPtr<unsigned char> cookedBuffer(outputStream.getBuffer().begin(), outputStream.getWrittenBytes());
builder.setConvexMesh(cookedBuffer);
// builder.getConvexMesh().
return true;
}
physx::PxConvexMeshGeometry* PxConvexMeshGeometryDTO::deserialize(Nv::Blast::Serialization::PxConvexMeshGeometry::Reader reader)
{
NVBLAST_ASSERT(PxConvexMeshGeometryDTO::Cooking != nullptr);
reader = reader;
return nullptr;
}
bool PxConvexMeshGeometryDTO::deserializeInto(Nv::Blast::Serialization::PxConvexMeshGeometry::Reader reader, physx::PxConvexMeshGeometry * poco)
{
NVBLAST_ASSERT(PxConvexMeshGeometryDTO::Cooking != nullptr);
PxMeshScaleDTO::deserializeInto(reader.getScale(), &poco->scale);
Nv::Blast::ExtKJPxInputStream inputStream(reader.getConvexMesh());
//NOTE: Naive approach, no shared convex hulls
poco->convexMesh = Physics->createConvexMesh(inputStream);
return false;
}
}
}
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