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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.
#include "RTdef.h"
#if RT_COMPILE
#include <RenderMeshAsset.h>
#include "Mesh.h"
namespace nvidia
{
namespace fracture
{
void Mesh::gatherPartMesh(Array<PxVec3>& vertices,
nvidia::Array<uint32_t>& indices,
nvidia::Array<PxVec3>& normals,
nvidia::Array<PxVec2>& texcoords,
nvidia::Array<SubMesh>& subMeshes,
const RenderMeshAsset& renderMeshAsset,
uint32_t partIndex)
{
if (partIndex >= renderMeshAsset.getPartCount())
{
vertices.resize(0);
indices.resize(0);
normals.resize(0);
texcoords.resize(0);
subMeshes.resize(0);
return;
}
subMeshes.resize(renderMeshAsset.getSubmeshCount());
// Pre-count vertices and indices so we can allocate once
uint32_t vertexCount = 0;
uint32_t indexCount = 0;
for (uint32_t submeshIndex = 0; submeshIndex < renderMeshAsset.getSubmeshCount(); ++submeshIndex)
{
const RenderSubmesh& submesh = renderMeshAsset.getSubmesh(submeshIndex);
vertexCount += submesh.getVertexCount(partIndex);
indexCount += submesh.getIndexCount(partIndex);
}
vertices.resize(vertexCount);
normals.resize(vertexCount);
texcoords.resize(vertexCount);
indices.resize(indexCount);
vertexCount = 0;
indexCount = 0;
for (uint32_t submeshIndex = 0; submeshIndex < renderMeshAsset.getSubmeshCount(); ++submeshIndex)
{
const RenderSubmesh& submesh = renderMeshAsset.getSubmesh(submeshIndex);
const uint32_t submeshVertexCount = submesh.getVertexCount(partIndex);
if (submeshVertexCount > 0)
{
const VertexBuffer& vertexBuffer = submesh.getVertexBuffer();
const VertexFormat& vertexFormat = vertexBuffer.getFormat();
enum { MESH_SEMANTIC_COUNT = 3 };
struct {
RenderVertexSemantic::Enum semantic;
RenderDataFormat::Enum format;
uint32_t sizeInBytes;
void* dstBuffer;
} semanticData[MESH_SEMANTIC_COUNT] = {
{ RenderVertexSemantic::POSITION, RenderDataFormat::FLOAT3, sizeof(PxVec3), &vertices[vertexCount] },
{ RenderVertexSemantic::NORMAL, RenderDataFormat::FLOAT3, sizeof(PxVec3), &normals[vertexCount] },
{ RenderVertexSemantic::TEXCOORD0, RenderDataFormat::FLOAT2, sizeof(PxVec2), &texcoords[vertexCount] }
};
for (uint32_t i = 0; i < MESH_SEMANTIC_COUNT; ++i)
{
const int32_t bufferIndex = vertexFormat.getBufferIndexFromID(vertexFormat.getSemanticID(semanticData[i].semantic));
if (bufferIndex >= 0)
vertexBuffer.getBufferData(semanticData[i].dstBuffer,
semanticData[i].format,
semanticData[i].sizeInBytes,
(uint32_t)bufferIndex,
submesh.getFirstVertexIndex(partIndex),
submesh.getVertexCount(partIndex));
else
memset(semanticData[i].dstBuffer, 0, submesh.getVertexCount(partIndex)*semanticData[i].sizeInBytes);
}
/*
const uint32_t firstVertexIndex = submesh.getFirstVertexIndex(partIndex);
fillBuffer<PxVec3>(vertexBuffer, vertexFormat, RenderVertexSemantic::POSITION, RenderDataFormat::FLOAT3,
firstVertexIndex, submeshVertexCount, &vertices[vertexCount]);
fillBuffer<PxVec3>(vertexBuffer, vertexFormat, RenderVertexSemantic::NORMAL, RenderDataFormat::FLOAT3,
firstVertexIndex, submeshVertexCount, &normals[vertexCount]);
fillBuffer<PxVec2>(vertexBuffer, vertexFormat, RenderVertexSemantic::TEXCOORD0, RenderDataFormat::FLOAT2,
firstVertexIndex, submeshVertexCount, &texcoords[vertexCount]);*/
const uint32_t* partIndexBuffer = submesh.getIndexBuffer(partIndex);
const uint32_t partIndexCount = submesh.getIndexCount(partIndex);
subMeshes[submeshIndex].firstIndex = (int32_t)partIndexCount;
for (uint32_t indexNum = 0; indexNum < partIndexCount; ++indexNum)
{
indices[indexCount++] = partIndexBuffer[indexNum] + vertexCount - submesh.getFirstVertexIndex(partIndex);
}
vertexCount += submeshVertexCount;
}
}
}
void Mesh::loadFromRenderMesh(const RenderMeshAsset& mesh, uint32_t partIndex)
{
gatherPartMesh(mVertices, mIndices, mNormals, mTexCoords, mSubMeshes, mesh, partIndex);
}
}
}
#endif
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