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AssimpView now finds textures stored with their full path in the asset's directory. 

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@434 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
pull/1/head
aramis_acg 2009-06-05 01:47:55 +00:00
parent 9070dc1f3c
commit a534c364b2
2 changed files with 84 additions and 78 deletions
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131
code/ImproveCacheLocality.cpp
View File

@ -39,12 +39,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
*/ */
/** @file Implementation of the post processing to improve the /** @file Implementation of the post processing step to improve the cache locality of a mesh.
* cache locality of a mesh.
* <br> * <br>
* The algorithm is roughly basing on this paper: * The algorithm is roughly basing on this paper:
* http://www.cs.princeton.edu/gfx/pubs/Sander_2007_%3ETR/tipsy.pdf * http://www.cs.princeton.edu/gfx/pubs/Sander_2007_%3ETR/tipsy.pdf
* ... TODO: implement overdraw reduction * .. although overdraw rduction isn't implemented yet ...
*/ */
#include "AssimpPCH.h" #include "AssimpPCH.h"
@ -79,7 +78,7 @@ bool ImproveCacheLocalityProcess::IsActive( unsigned int pFlags) const
// Setup configuration // Setup configuration
void ImproveCacheLocalityProcess::SetupProperties(const Importer* pImp) void ImproveCacheLocalityProcess::SetupProperties(const Importer* pImp)
{ {
// AI_CONFIG_PP_ICL_PTCACHE_SIZE // AI_CONFIG_PP_ICL_PTCACHE_SIZE controls the target cache size for the optimizer
configCacheDepth = pImp->GetPropertyInteger(AI_CONFIG_PP_ICL_PTCACHE_SIZE,PP_ICL_PTCACHE_SIZE); configCacheDepth = pImp->GetPropertyInteger(AI_CONFIG_PP_ICL_PTCACHE_SIZE,PP_ICL_PTCACHE_SIZE);
} }
@ -118,11 +117,12 @@ void ImproveCacheLocalityProcess::Execute( aiScene* pScene)
// Improves the cache coherency of a specific mesh // Improves the cache coherency of a specific mesh
float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int meshNum) float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int meshNum)
{ {
// TODO: rewrite this to use std::vector or boost::shared_array
ai_assert(NULL != pMesh); ai_assert(NULL != pMesh);
// check whether the input data is valid -> // Check whether the input data is valid
// - there must be vertices and faces (haha) // - there must be vertices and faces
// - all faces must be triangulated // - all faces must be triangulated or we can't operate on them
if (!pMesh->HasFaces() || !pMesh->HasPositions()) if (!pMesh->HasFaces() || !pMesh->HasPositions())
return 0.f; return 0.f;
@ -135,32 +135,32 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
const aiFace* const pcEnd = pMesh->mFaces+pMesh->mNumFaces; const aiFace* const pcEnd = pMesh->mFaces+pMesh->mNumFaces;
// Input ACMR is for logging purposes only // Input ACMR is for logging purposes only
if (!DefaultLogger::isNullLogger()) if (!DefaultLogger::isNullLogger()) {
{
unsigned int* piFIFOStack = new unsigned int[configCacheDepth]; unsigned int* piFIFOStack = new unsigned int[configCacheDepth];
::memset(piFIFOStack,0xff,configCacheDepth*sizeof(unsigned int)); memset(piFIFOStack,0xff,configCacheDepth*sizeof(unsigned int));
unsigned int* piCur = piFIFOStack; unsigned int* piCur = piFIFOStack;
const unsigned int* const piCurEnd = piFIFOStack + configCacheDepth; const unsigned int* const piCurEnd = piFIFOStack + configCacheDepth;
// count the number of cache misses // count the number of cache misses
unsigned int iCacheMisses = 0; unsigned int iCacheMisses = 0;
for (const aiFace* pcFace = pMesh->mFaces;pcFace != pcEnd;++pcFace) for (const aiFace* pcFace = pMesh->mFaces;pcFace != pcEnd;++pcFace) {
{
for (unsigned int qq = 0; qq < 3;++qq) for (unsigned int qq = 0; qq < 3;++qq) {
{
bool bInCache = false; bool bInCache = false;
for (unsigned int* pp = piFIFOStack;pp < piCurEnd;++pp)
{ for (unsigned int* pp = piFIFOStack;pp < piCurEnd;++pp) {
if (*pp == pcFace->mIndices[qq]) { if (*pp == pcFace->mIndices[qq]) {
// the vertex is in cache // the vertex is in cache
bInCache = true; bInCache = true;
break; break;
} }
} }
if (!bInCache) if (!bInCache) {
{
++iCacheMisses; ++iCacheMisses;
if (piCurEnd == piCur)piCur = piFIFOStack; if (piCurEnd == piCur) {
piCur = piFIFOStack;
}
*piCur++ = pcFace->mIndices[qq]; *piCur++ = pcFace->mIndices[qq];
} }
} }
@ -171,9 +171,9 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
char szBuff[128]; // should be sufficiently large in every case char szBuff[128]; // should be sufficiently large in every case
// the JoinIdenticalVertices process has not been executed on this // the JoinIdenticalVertices process has not been executed on this
// mesh, otherwise this value would normally be at least minimally# // mesh, otherwise this value would normally be at least minimally
// smaller than 3.0 ... // smaller than 3.0 ...
::sprintf(szBuff,"Mesh %i: Not suitable for vcache optimization",meshNum); sprintf(szBuff,"Mesh %i: Not suitable for vcache optimization",meshNum);
DefaultLogger::get()->warn(szBuff); DefaultLogger::get()->warn(szBuff);
return 0.f; return 0.f;
} }
@ -184,12 +184,11 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
// build a list to store per-vertex caching time stamps // build a list to store per-vertex caching time stamps
unsigned int* const piCachingStamps = new unsigned int[pMesh->mNumVertices]; unsigned int* const piCachingStamps = new unsigned int[pMesh->mNumVertices];
::memset(piCachingStamps,0x0,pMesh->mNumVertices*sizeof(unsigned int)); memset(piCachingStamps,0x0,pMesh->mNumVertices*sizeof(unsigned int));
// allocate an empty output index buffer. We store the output // allocate an empty output index buffer. We store the output indices in one large array.
// indices in one large array. Since the number of triangles // Since the number of triangles won't change the input faces can be reused. This is how
// won't change the input faces can be reused. This is how we save // we save thousands of redundant mini allocations for aiFace::mIndices
// thousands of redundant mini allocations for aiFace::mIndices
const unsigned int iIdxCnt = pMesh->mNumFaces*3; const unsigned int iIdxCnt = pMesh->mNumFaces*3;
unsigned int* const piIBOutput = new unsigned int[iIdxCnt]; unsigned int* const piIBOutput = new unsigned int[iIdxCnt];
unsigned int* piCSIter = piIBOutput; unsigned int* piCSIter = piIBOutput;
@ -204,21 +203,21 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
// create a copy of the piNumTriPtr buffer // create a copy of the piNumTriPtr buffer
unsigned int* const piNumTriPtr = adj.mLiveTriangles; unsigned int* const piNumTriPtr = adj.mLiveTriangles;
const unsigned int* const piNumTriPtrNoModify = new unsigned int[pMesh->mNumVertices]; const unsigned int* const piNumTriPtrNoModify = new unsigned int[pMesh->mNumVertices];
::memcpy(const_cast<unsigned int* const> (piNumTriPtrNoModify),piNumTriPtr, memcpy(const_cast<unsigned int* const> (piNumTriPtrNoModify),piNumTriPtr,
pMesh->mNumVertices * sizeof(unsigned int)); pMesh->mNumVertices * sizeof(unsigned int));
// get the largest number of referenced triangles // get the largest number of referenced triangles and allocate the "candidate buffer"
// and allocate the "candidate buffer" unsigned int iMaxRefTris = 0; {
unsigned int iMaxRefTris = 0;
{
const unsigned int* piCur = adj.mLiveTriangles; const unsigned int* piCur = adj.mLiveTriangles;
const unsigned int* const piCurEnd = adj.mLiveTriangles+pMesh->mNumVertices; const unsigned int* const piCurEnd = adj.mLiveTriangles+pMesh->mNumVertices;
for (;piCur != piCurEnd;++piCur) for (;piCur != piCurEnd;++piCur) {
iMaxRefTris = std::max(iMaxRefTris,*piCur); iMaxRefTris = std::max(iMaxRefTris,*piCur);
} }
}
unsigned int* piCandidates = new unsigned int[iMaxRefTris*3]; unsigned int* piCandidates = new unsigned int[iMaxRefTris*3];
unsigned int iCacheMisses = 0; unsigned int iCacheMisses = 0;
// ...................................................................................
/** PSEUDOCODE for the algorithm /** PSEUDOCODE for the algorithm
A = Build-Adjacency(I) Vertex-triangle adjacency A = Build-Adjacency(I) Vertex-triangle adjacency
@ -246,33 +245,31 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
f = Get-Next-Vertex(I,i,k,N,C,s,L,D) f = Get-Next-Vertex(I,i,k,N,C,s,L,D)
return O return O
*/ */
// ...................................................................................
int ivdx = 0; int ivdx = 0;
int ics = 1; int ics = 1;
int iStampCnt = configCacheDepth+1; int iStampCnt = configCacheDepth+1;
while (ivdx >= 0) while (ivdx >= 0) {
{
unsigned int icnt = piNumTriPtrNoModify[ivdx]; unsigned int icnt = piNumTriPtrNoModify[ivdx];
unsigned int* piList = adj.GetAdjacentTriangles(ivdx); unsigned int* piList = adj.GetAdjacentTriangles(ivdx);
unsigned int* piCurCandidate = piCandidates; unsigned int* piCurCandidate = piCandidates;
// get all triangles in the neighborhood // get all triangles in the neighborhood
for (unsigned int tri = 0; tri < icnt;++tri) for (unsigned int tri = 0; tri < icnt;++tri) {
{
// if they have not yet been emitted, add them to the output IB // if they have not yet been emitted, add them to the output IB
const unsigned int fidx = *piList++; const unsigned int fidx = *piList++;
if (!abEmitted[fidx]) if (!abEmitted[fidx]) {
{
// so iterate through all vertices of the current triangle // so iterate through all vertices of the current triangle
const aiFace* pcFace = &pMesh->mFaces[ fidx ]; const aiFace* pcFace = &pMesh->mFaces[ fidx ];
const unsigned int* const p2 = pcFace->mIndices+3; for (unsigned int* p = pcFace->mIndices, *p2 = pcFace->mIndices+3;p != p2;++p) {
for (unsigned int* p = pcFace->mIndices;p != p2;++p)
{
const unsigned int dp = *p; const unsigned int dp = *p;
// the current vertex won't have any free triangles after this step // the current vertex won't have any free triangles after this step
if (ivdx != (int)dp) if (ivdx != (int)dp) {
{
// append the vertex to the dead-end stack // append the vertex to the dead-end stack
sDeadEndVStack.push(dp); sDeadEndVStack.push(dp);
@ -287,8 +284,7 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
*piCSIter++ = dp; *piCSIter++ = dp;
// if the vertex is not yet in cache, set its cache count // if the vertex is not yet in cache, set its cache count
if (iStampCnt-piCachingStamps[dp] > configCacheDepth) if (iStampCnt-piCachingStamps[dp] > configCacheDepth) {
{
piCachingStamps[dp] = iStampCnt++; piCachingStamps[dp] = iStampCnt++;
++iCacheMisses; ++iCacheMisses;
} }
@ -304,52 +300,45 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
// get next fanning vertex // get next fanning vertex
ivdx = -1; ivdx = -1;
int max_priority = -1; int max_priority = -1;
for (unsigned int* piCur = piCandidates;piCur != piCurCandidate;++piCur) for (unsigned int* piCur = piCandidates;piCur != piCurCandidate;++piCur) {
{
register const unsigned int dp = *piCur; register const unsigned int dp = *piCur;
// must have live triangles // must have live triangles
if (piNumTriPtr[dp] > 0) if (piNumTriPtr[dp] > 0) {
{
int priority = 0; int priority = 0;
// will the vertex be in cache, even after fanning occurs? // will the vertex be in cache, even after fanning occurs?
unsigned int tmp; unsigned int tmp;
if ((tmp = iStampCnt-piCachingStamps[dp]) + 2*piNumTriPtr[dp] <= configCacheDepth) if ((tmp = iStampCnt-piCachingStamps[dp]) + 2*piNumTriPtr[dp] <= configCacheDepth) {
priority = tmp; priority = tmp;
}
// keep best candidate // keep best candidate
if (priority > max_priority) if (priority > max_priority) {
{
max_priority = priority; max_priority = priority;
ivdx = dp; ivdx = dp;
} }
} }
} }
// did we reach a dead end? // did we reach a dead end?
if (-1 == ivdx) if (-1 == ivdx) {
{ // need to get a non-local vertex for which we have a good chance that it is still
// need to get a non-local vertex for which we have a good // in the cache ...
// chance that it is still in the cache ... while (!sDeadEndVStack.empty()) {
while (!sDeadEndVStack.empty())
{
unsigned int iCachedIdx = sDeadEndVStack.top(); unsigned int iCachedIdx = sDeadEndVStack.top();
sDeadEndVStack.pop(); sDeadEndVStack.pop();
if (piNumTriPtr[ iCachedIdx ] > 0) if (piNumTriPtr[ iCachedIdx ] > 0) {
{
ivdx = iCachedIdx; ivdx = iCachedIdx;
break; break;
} }
} }
if (-1 == ivdx) if (-1 == ivdx) {
{ // well, there isn't such a vertex. Simply get the next vertex in input order and
// well, there isn't such a vertex. Simply get the next // hope it is not too bad ...
// vertex in input order and hope it is not too bad ... while (ics < (int)pMesh->mNumVertices) {
while (ics < (int)pMesh->mNumVertices)
{
++ics; ++ics;
if (piNumTriPtr[ics] > 0) if (piNumTriPtr[ics] > 0) {
{
ivdx = ics; ivdx = ics;
break; break;
} }
@ -358,8 +347,7 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
} }
} }
float fACMR2 = 0.0f; float fACMR2 = 0.0f;
if (!DefaultLogger::isNullLogger()) if (!DefaultLogger::isNullLogger()) {
{
fACMR2 = (float)iCacheMisses / pMesh->mNumFaces; fACMR2 = (float)iCacheMisses / pMesh->mNumFaces;
// very intense verbose logging ... prepare for much text if there are many meshes // very intense verbose logging ... prepare for much text if there are many meshes
@ -375,8 +363,7 @@ float ImproveCacheLocalityProcess::ProcessMesh( aiMesh* pMesh, unsigned int mesh
} }
// sort the output index buffer back to the input array // sort the output index buffer back to the input array
piCSIter = piIBOutput; piCSIter = piIBOutput;
for (aiFace* pcFace = pMesh->mFaces; pcFace != pcEnd;++pcFace) for (aiFace* pcFace = pMesh->mFaces; pcFace != pcEnd;++pcFace) {
{
pcFace->mIndices[0] = *piCSIter++; pcFace->mIndices[0] = *piCSIter++;
pcFace->mIndices[1] = *piCSIter++; pcFace->mIndices[1] = *piCSIter++;
pcFace->mIndices[2] = *piCSIter++; pcFace->mIndices[2] = *piCSIter++;

31
tools/assimp_view/Material.cpp
View File

@ -219,9 +219,8 @@ bool CMaterialManager::TryLongerPath(char* szTemp,aiString* p_szString)
int CMaterialManager::FindValidPath(aiString* p_szString) int CMaterialManager::FindValidPath(aiString* p_szString)
{ {
ai_assert(NULL != p_szString); ai_assert(NULL != p_szString);
aiString pcpy = *p_szString;
if ('*' == p_szString->data[0]) if ('*' == p_szString->data[0]) {
{
// '*' as first character indicates an embedded file // '*' as first character indicates an embedded file
return 5; return 5;
} }
@ -231,10 +230,10 @@ int CMaterialManager::FindValidPath(aiString* p_szString)
if (pFile)fclose(pFile); if (pFile)fclose(pFile);
else else
{ {
// check whether we can use the directory of // check whether we can use the directory of the asset as relative base
// the asset as relative base char szTemp[MAX_PATH*2], tmp2[MAX_PATH*2];
char szTemp[MAX_PATH*2];
strcpy(szTemp, g_szFileName); strcpy(szTemp, g_szFileName);
strcpy(tmp2,szTemp);
char* szData = p_szString->data; char* szData = p_szString->data;
if (*szData == '\\' || *szData == '/')++szData; if (*szData == '\\' || *szData == '/')++szData;
@ -249,6 +248,7 @@ int CMaterialManager::FindValidPath(aiString* p_szString)
*szEnd = 0; *szEnd = 0;
strcat(szEnd,szData); strcat(szEnd,szData);
pFile = fopen(szTemp,"rb"); pFile = fopen(szTemp,"rb");
if (!pFile) if (!pFile)
{ {
@ -281,6 +281,24 @@ int CMaterialManager::FindValidPath(aiString* p_szString)
{ {
if(TryLongerPath(szTemp, p_szString))return 1; if(TryLongerPath(szTemp, p_szString))return 1;
} }
// patch by mark sibly to look for textures files in the asset's base directory.
const char *path=pcpy.data;
const char *p=strrchr( path,'/' );
if( !p ) p=strrchr( path,'\\' );
if( p ){
char *q=strrchr( tmp2,'/' );
if( !q ) q=strrchr( tmp2,'\\' );
if( q ){
strcpy( q+1,p+1 );
if(pFile=fopen( tmp2,"r" ) ){
fclose( pFile );
strcpy(p_szString->data,tmp2);
p_szString->length = strlen(tmp2);
return 1;
}
}
}
return 0; return 0;
} }
} }
@ -292,6 +310,7 @@ int CMaterialManager::FindValidPath(aiString* p_szString)
iLen2 = iLen2 > MAXLEN ? MAXLEN : iLen2; iLen2 = iLen2 > MAXLEN ? MAXLEN : iLen2;
memcpy(p_szString->data,szTemp,iLen2); memcpy(p_szString->data,szTemp,iLen2);
p_szString->length = iLen; p_szString->length = iLen;
} }
return 1; return 1;
} }