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/*
* Copyright (c) 2008-2017, 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 "ClothRenderMesh.h"
#include "Renderer.h"
#include <NvClothExt/ClothFabricCooker.h>
#include "foundation/PxStrideIterator.h"
using namespace nv;
using namespace cloth;
template <typename T>
void gatherIndices(std::vector<uint16_t>& indices,
const BoundedData& triangles, const BoundedData& quads)
{
PxStrideIterator<const T> tIt, qIt;
indices.reserve(triangles.count * 3 + quads.count * 6);
tIt = PxMakeIterator(reinterpret_cast<const T*>(triangles.data), triangles.stride);
for (PxU32 i = 0; i < triangles.count; ++i, ++tIt)
{
indices.push_back(static_cast<uint16_t>(tIt.ptr()[0]));
indices.push_back(static_cast<uint16_t>(tIt.ptr()[1]));
indices.push_back(static_cast<uint16_t>(tIt.ptr()[2]));
}
//Only do quads in case there wasn't triangle data provided
// otherwise we risk to render triangles double
if(indices.size() == 0)
{
qIt = PxMakeIterator(reinterpret_cast<const T*>(quads.data), quads.stride);
for (PxU32 i = 0; i < quads.count; ++i, ++qIt)
{
indices.push_back(static_cast<uint16_t>(qIt.ptr()[0]));
indices.push_back(static_cast<uint16_t>(qIt.ptr()[1]));
indices.push_back(static_cast<uint16_t>(qIt.ptr()[2]));
indices.push_back(static_cast<uint16_t>(qIt.ptr()[0]));
indices.push_back(static_cast<uint16_t>(qIt.ptr()[2]));
indices.push_back(static_cast<uint16_t>(qIt.ptr()[3]));
}
}
}
ClothRenderMesh::ClothRenderMesh(const ClothMeshDesc& desc)
{
uint32_t numVertices = desc.points.count;
mVertices.resize(numVertices);
PxStrideIterator<const PxVec3> pIt(reinterpret_cast<const PxVec3*>(desc.points.data), desc.points.stride);
for (PxU32 i = 0; i < numVertices; ++i)
{
mVertices[i].position = *pIt++;
mVertices[i].normal = PxVec3(0.f);
}
// build triangle indices
if (desc.flags & MeshFlag::e16_BIT_INDICES)
gatherIndices<PxU16>(mIndices, desc.triangles, desc.quads);
else
gatherIndices<PxU32>(mIndices, desc.triangles, desc.quads);
for (PxU32 i = 0; i < mIndices.size(); i += 3)
{
auto p0 = mVertices[mIndices[i]].position;
auto p1 = mVertices[mIndices[i + 1]].position;
auto p2 = mVertices[mIndices[i + 2]].position;
auto normal = ((p2 - p0).cross(p1 - p0)).getNormalized();
mVertices[mIndices[i]].normal += normal;
mVertices[mIndices[i + 1]].normal += normal;
mVertices[mIndices[i + 2]].normal += normal;
}
for (PxU32 i = 0; i < numVertices; ++i)
mVertices[i].normal.normalize();
std::vector<D3D11_INPUT_ELEMENT_DESC> layout;
layout.push_back({ "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 });
layout.push_back({ "NORMAL", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 });
initialize(mVertices.data(), (uint32_t)mVertices.size(), sizeof(Vertex), layout, mIndices.data(), (uint32_t)mIndices.size() / 3);
}
ClothRenderMesh::ClothRenderMesh()
: mIndexBuffer(nullptr)
{
}
ClothRenderMesh::ClothRenderMesh(const void* vertices, uint32_t numVertices, uint32_t vertexSize,
std::vector<D3D11_INPUT_ELEMENT_DESC>& inputDesc, const uint16_t* faces, uint32_t numFaces)
: mIndexBuffer(nullptr)
{
initialize(vertices, numVertices, vertexSize, inputDesc, faces, numFaces);
}
void ClothRenderMesh::initialize(const void* vertices, uint32_t numVertices, uint32_t vertexSize,
std::vector<D3D11_INPUT_ELEMENT_DESC>& inputDesc, const uint16_t* faces, uint32_t numFaces)
{
mDevice = GetDeviceManager()->GetDevice();
mInputDesc = inputDesc;
mNumVertices = numVertices;
mVertexSize = vertexSize;
mNumFaces = numFaces;
// VB
{
D3D11_SUBRESOURCE_DATA vertexBufferData;
ZeroMemory(&vertexBufferData, sizeof(vertexBufferData));
vertexBufferData.pSysMem = vertices;
D3D11_BUFFER_DESC bufferDesc;
memset(&bufferDesc, 0, sizeof(D3D11_BUFFER_DESC));
bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
bufferDesc.ByteWidth = vertexSize * numVertices;
bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
bufferDesc.MiscFlags = 0;
bufferDesc.Usage = D3D11_USAGE_DYNAMIC;
V(mDevice->CreateBuffer(&bufferDesc, &vertexBufferData, &mVertexBuffer));
}
// IB
if (faces != nullptr)
{
D3D11_SUBRESOURCE_DATA indexBufferData;
ZeroMemory(&indexBufferData, sizeof(indexBufferData));
indexBufferData.pSysMem = faces;
D3D11_BUFFER_DESC bufferDesc;
memset(&bufferDesc, 0, sizeof(D3D11_BUFFER_DESC));
bufferDesc.BindFlags = D3D11_BIND_INDEX_BUFFER;
bufferDesc.ByteWidth = sizeof(uint16_t) * numFaces*3;
bufferDesc.CPUAccessFlags = 0;
bufferDesc.MiscFlags = 0;
bufferDesc.Usage = D3D11_USAGE_IMMUTABLE;
V(mDevice->CreateBuffer(&bufferDesc, &indexBufferData, &mIndexBuffer));
}
std::vector<uint32_t> offsets;
offsets.push_back(0);
setSubmeshOffsets(offsets);
}
ClothRenderMesh::~ClothRenderMesh()
{
SAFE_RELEASE(mVertexBuffer);
SAFE_RELEASE(mIndexBuffer);
}
void ClothRenderMesh::update(const PxVec3* positions, uint32_t numVertices)
{
PxStrideIterator<const PxVec3> pIt(positions, sizeof(PxVec3));
Vertex* vertices = mVertices.data();
const uint16_t* indices = mIndices.data();
for (PxU32 i = 0; i < numVertices; ++i)
{
vertices[i].position = *pIt++;
vertices[i].normal = PxVec3(0.f);
}
const PxU32 numIndices = (PxU32)mIndices.size();
for (PxU32 i = 0; i < numIndices; i += 3)
{
const auto p0 = vertices[indices[i]].position;
const auto p1 = vertices[indices[i + 1]].position;
const auto p2 = vertices[indices[i + 2]].position;
const auto normal = ((p2 - p0).cross(p1 - p0)).getNormalized();
vertices[indices[i]].normal += normal;
vertices[indices[i + 1]].normal += normal;
vertices[indices[i + 2]].normal += normal;
}
for (PxU32 i = 0; i < numVertices; ++i)
vertices[i].normal.normalize();
ID3D11DeviceContext* context;
mDevice->GetImmediateContext(&context);
{
D3D11_MAPPED_SUBRESOURCE mappedResource;
ZeroMemory(&mappedResource, sizeof(D3D11_MAPPED_SUBRESOURCE));
V(context->Map(mVertexBuffer, 0, D3D11_MAP_WRITE_DISCARD, NULL, &mappedResource));
memcpy(mappedResource.pData, mVertices.data(), sizeof(Vertex) * mVertices.size());
context->Unmap(mVertexBuffer, 0);
}
}
void ClothRenderMesh::render(ID3D11DeviceContext& context, int submesh) const
{
context.IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
UINT strides[1] = { mVertexSize };
UINT offsets[1] = { 0 };
context.IASetVertexBuffers(0, 1, &mVertexBuffer, strides, offsets);
context.IASetIndexBuffer(mIndexBuffer, DXGI_FORMAT_R16_UINT, 0);
int firstIndex = mSubmeshOffsets[submesh];
int indexCount = mSubmeshOffsets[submesh+1] - firstIndex;
if (mIndexBuffer)
context.DrawIndexed(indexCount, firstIndex, 0);
else
context.Draw(mNumVertices, 0);
}
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