From c3f14b915c38a4978745f12f1f816572cce4b5a0 Mon Sep 17 00:00:00 2001 From: Dave Parks Date: Mon, 3 Jun 2013 12:50:48 -0500 Subject: NORSPEC-229 Fix for bad binormals on mirrored surfaces (use tangent calculator instead of binormal calculator, convert binormal centric code to tangent centric) --- indra/llmath/llvolume.cpp | 327 ++++++++++++++++++++++------------------ indra/llmath/llvolume.h | 36 ++--- indra/llmath/llvolumeoctree.cpp | 66 +++++--- indra/llmath/llvolumeoctree.h | 8 +- 4 files changed, 234 insertions(+), 203 deletions(-) (limited to 'indra/llmath') diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp index 3f06e6b99e..bf03c971cd 100755 --- a/indra/llmath/llvolume.cpp +++ b/indra/llmath/llvolume.cpp @@ -2079,9 +2079,9 @@ void LLVolume::regen() createVolumeFaces(); } -void LLVolume::genBinormals(S32 face) +void LLVolume::genTangents(S32 face) { - mVolumeFaces[face].createBinormals(); + mVolumeFaces[face].createTangents(); } LLVolume::~LLVolume() @@ -4392,7 +4392,7 @@ void LLVolume::generateSilhouetteVertices(std::vector &vertices, segments.push_back(vertices.size()); #if DEBUG_SILHOUETTE_BINORMALS vertices.push_back(face.mVertices[j].getPosition()); - vertices.push_back(face.mVertices[j].getPosition() + face.mVertices[j].mBinormal*0.1f); + vertices.push_back(face.mVertices[j].getPosition() + face.mVertices[j].mTangent*0.1f); normals.push_back(LLVector3(0,0,1)); normals.push_back(LLVector3(0,0,1)); segments.push_back(vertices.size()); @@ -4508,22 +4508,9 @@ void LLVolume::generateSilhouetteVertices(std::vector &vertices, } } -S32 LLVolume::lineSegmentIntersect(const LLVector3& start, const LLVector3& end, - S32 face, - LLVector3* intersection,LLVector2* tex_coord, LLVector3* normal, LLVector3* bi_normal) -{ - LLVector4a starta, enda; - starta.load3(start.mV); - enda.load3(end.mV); - - return lineSegmentIntersect(starta, enda, face, intersection, tex_coord, normal, bi_normal); - -} - - S32 LLVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, - LLVector3* intersection,LLVector2* tex_coord, LLVector3* normal, LLVector3* bi_normal) + LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent_out) { S32 hit_face = -1; @@ -4561,9 +4548,9 @@ S32 LLVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& en if (LLLineSegmentBoxIntersect(start, end, box_center, box_size)) { - if (bi_normal != NULL) // if the caller wants binormals, we may need to generate them + if (tangent_out != NULL) // if the caller wants tangents, we may need to generate them { - genBinormals(i); + genTangents(i); } if (isUnique()) @@ -4597,7 +4584,7 @@ S32 LLVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& en LLVector4a intersect = dir; intersect.mul(closest_t); intersect.add(start); - intersection->set(intersect.getF32ptr()); + *intersection = intersect; } @@ -4612,19 +4599,42 @@ S32 LLVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& en if (normal!= NULL) { - LLVector4* norm = (LLVector4*) face.mNormals; - - *normal = ((1.f - a - b) * LLVector3(norm[idx0]) + - a * LLVector3(norm[idx1]) + - b * LLVector3(norm[idx2])); + LLVector4a* norm = face.mNormals; + + LLVector4a n1,n2,n3; + n1 = norm[idx0]; + n1.mul(1.f-a-b); + + n2 = norm[idx1]; + n2.mul(a); + + n3 = norm[idx2]; + n3.mul(b); + + n1.add(n2); + n1.add(n3); + + *normal = n1; } - if (bi_normal != NULL) + if (tangent_out != NULL) { - LLVector4* binormal = (LLVector4*) face.mBinormals; - *bi_normal = ((1.f - a - b) * LLVector3(binormal[idx0]) + - a * LLVector3(binormal[idx1]) + - b * LLVector3(binormal[idx2])); + LLVector4a* tangents = face.mTangents; + + LLVector4a t1,t2,t3; + t1 = tangents[idx0]; + t1.mul(1.f-a-b); + + t2 = tangents[idx1]; + t2.mul(a); + + t3 = tangents[idx2]; + t3.mul(b); + + t1.add(t2); + t1.add(t3); + + *tangent_out = t1; } } } @@ -4637,7 +4647,7 @@ S32 LLVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& en face.createOctree(); } - LLOctreeTriangleRayIntersect intersect(start, dir, &face, &closest_t, intersection, tex_coord, normal, bi_normal); + LLOctreeTriangleRayIntersect intersect(start, dir, &face, &closest_t, intersection, tex_coord, normal, tangent_out); intersect.traverse(face.mOctree); if (intersect.mHitFace) { @@ -5183,7 +5193,7 @@ LLVolumeFace::LLVolumeFace() : mNumIndices(0), mPositions(NULL), mNormals(NULL), - mBinormals(NULL), + mTangents(NULL), mTexCoords(NULL), mIndices(NULL), mWeights(NULL), @@ -5206,7 +5216,7 @@ LLVolumeFace::LLVolumeFace(const LLVolumeFace& src) mNumIndices(0), mPositions(NULL), mNormals(NULL), - mBinormals(NULL), + mTangents(NULL), mTexCoords(NULL), mIndices(NULL), mWeights(NULL), @@ -5264,15 +5274,15 @@ LLVolumeFace& LLVolumeFace::operator=(const LLVolumeFace& src) } - if (src.mBinormals) + if (src.mTangents) { - allocateBinormals(src.mNumVertices); - LLVector4a::memcpyNonAliased16((F32*) mBinormals, (F32*) src.mBinormals, vert_size); + allocateTangents(src.mNumVertices); + LLVector4a::memcpyNonAliased16((F32*) mTangents, (F32*) src.mTangents, vert_size); } else { - ll_aligned_free_16(mBinormals); - mBinormals = NULL; + ll_aligned_free_16(mTangents); + mTangents = NULL; } if (src.mWeights) @@ -5316,8 +5326,8 @@ void LLVolumeFace::freeData() mTexCoords = NULL; ll_aligned_free_16(mIndices); mIndices = NULL; - ll_aligned_free_16(mBinormals); - mBinormals = NULL; + ll_aligned_free_16(mTangents); + mTangents = NULL; ll_aligned_free_16(mWeights); mWeights = NULL; @@ -5897,7 +5907,7 @@ void LLVolumeFace::cacheOptimize() } LLVector4a* binorm = NULL; - if (mBinormals) + if (mTangents) { binorm = (LLVector4a*) ll_aligned_malloc_16(sizeof(LLVector4a)*num_verts); } @@ -5922,9 +5932,9 @@ void LLVolumeFace::cacheOptimize() { wght[cur_idx] = mWeights[idx]; } - if (mBinormals) + if (mTangents) { - binorm[cur_idx] = mBinormals[idx]; + binorm[cur_idx] = mTangents[idx]; } cur_idx++; @@ -5940,13 +5950,13 @@ void LLVolumeFace::cacheOptimize() ll_aligned_free_16(mNormals); ll_aligned_free_16(mTexCoords); ll_aligned_free_16(mWeights); - ll_aligned_free_16(mBinormals); + ll_aligned_free_16(mTangents); mPositions = pos; mNormals = norm; mTexCoords = tc; mWeights = wght; - mBinormals = binorm; + mTangents = binorm; //std::string result = llformat("ACMR pre/post: %.3f/%.3f -- %d triangles %d breaks", pre_acmr, post_acmr, mNumIndices/3, breaks); //llinfos << result << llendl; @@ -6027,7 +6037,7 @@ void LLVolumeFace::swapData(LLVolumeFace& rhs) { llswap(rhs.mPositions, mPositions); llswap(rhs.mNormals, mNormals); - llswap(rhs.mBinormals, mBinormals); + llswap(rhs.mTangents, mTangents); llswap(rhs.mTexCoords, mTexCoords); llswap(rhs.mIndices,mIndices); llswap(rhs.mNumVertices, mNumVertices); @@ -6116,22 +6126,11 @@ BOOL LLVolumeFace::createUnCutCubeCap(LLVolume* volume, BOOL partial_build) corners[2].mTexCoord=swap; } - LLVector4a binormal; - - calc_binormal_from_triangle( binormal, - corners[0].getPosition(), corners[0].mTexCoord, - corners[1].getPosition(), corners[1].mTexCoord, - corners[2].getPosition(), corners[2].mTexCoord); - - binormal.normalize3fast(); - S32 size = (grid_size+1)*(grid_size+1); resizeVertices(size); - allocateBinormals(size); - + LLVector4a* pos = (LLVector4a*) mPositions; LLVector4a* norm = (LLVector4a*) mNormals; - LLVector4a* binorm = (LLVector4a*) mBinormals; LLVector2* tc = (LLVector2*) mTexCoords; for(int gx = 0;gx& v, std::vector& idx); @@ -916,7 +916,7 @@ public: LLVector4a* mPositions; LLVector4a* mNormals; - LLVector4a* mBinormals; + LLVector4a* mTangents; LLVector2* mTexCoords; U16* mIndices; @@ -980,7 +980,7 @@ public: void setDirty() { mPathp->setDirty(); mProfilep->setDirty(); } void regen(); - void genBinormals(S32 face); + void genTangents(S32 face); BOOL isConvex() const; BOOL isCap(S32 face); @@ -1008,21 +1008,14 @@ public: //get the face index of the face that intersects with the given line segment at the point //closest to start. Moves end to the point of intersection. Returns -1 if no intersection. //Line segment must be in volume space. - S32 lineSegmentIntersect(const LLVector3& start, const LLVector3& end, + S32 lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face = -1, // which face to check, -1 = ALL_SIDES - LLVector3* intersection = NULL, // return the intersection point + LLVector4a* intersection = NULL, // return the intersection point LLVector2* tex_coord = NULL, // return the texture coordinates of the intersection point - LLVector3* normal = NULL, // return the surface normal at the intersection point - LLVector3* bi_normal = NULL // return the surface bi-normal at the intersection point + LLVector4a* normal = NULL, // return the surface normal at the intersection point + LLVector4a* tangent = NULL // return the surface tangent at the intersection point ); - S32 lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, - S32 face = 1, - LLVector3* intersection = NULL, - LLVector2* tex_coord = NULL, - LLVector3* normal = NULL, - LLVector3* bi_normal = NULL); - LLFaceID generateFaceMask(); BOOL isFaceMaskValid(LLFaceID face_mask); @@ -1081,21 +1074,12 @@ public: std::ostream& operator<<(std::ostream &s, const LLVolumeParams &volume_params); -void calc_binormal_from_triangle( - LLVector4a& binormal, - const LLVector4a& pos0, - const LLVector2& tex0, - const LLVector4a& pos1, - const LLVector2& tex1, - const LLVector4a& pos2, - const LLVector2& tex2); - BOOL LLLineSegmentBoxIntersect(const F32* start, const F32* end, const F32* center, const F32* size); BOOL LLLineSegmentBoxIntersect(const LLVector3& start, const LLVector3& end, const LLVector3& center, const LLVector3& size); BOOL LLLineSegmentBoxIntersect(const LLVector4a& start, const LLVector4a& end, const LLVector4a& center, const LLVector4a& size); -BOOL LLTriangleRayIntersect(const LLVector3& vert0, const LLVector3& vert1, const LLVector3& vert2, const LLVector3& orig, const LLVector3& dir, - F32& intersection_a, F32& intersection_b, F32& intersection_t, BOOL two_sided); +//BOOL LLTriangleRayIntersect(const LLVector3& vert0, const LLVector3& vert1, const LLVector3& vert2, const LLVector3& orig, const LLVector3& dir, +// F32& intersection_a, F32& intersection_b, F32& intersection_t, BOOL two_sided); BOOL LLTriangleRayIntersect(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir, F32& intersection_a, F32& intersection_b, F32& intersection_t); diff --git a/indra/llmath/llvolumeoctree.cpp b/indra/llmath/llvolumeoctree.cpp index cc83cb7235..0728b49c1f 100755 --- a/indra/llmath/llvolumeoctree.cpp +++ b/indra/llmath/llvolumeoctree.cpp @@ -94,14 +94,14 @@ void LLVolumeOctreeListener::handleChildAddition(const LLOctreeNode { LLVolumeOctreeListener* vl = (LLVolumeOctreeListener*) node->getListener(0); - /*const F32* start = mStart.getF32(); - const F32* end = mEnd.getF32(); - const F32* center = vl->mBounds[0].getF32(); - const F32* size = vl->mBounds[1].getF32();*/ - - //if (LLLineSegmentBoxIntersect(mStart, mEnd, vl->mBounds[0], vl->mBounds[1])) - if (LLLineSegmentBoxIntersect(mStart.getF32ptr(), mEnd.getF32ptr(), vl->mBounds[0].getF32ptr(), vl->mBounds[1].getF32ptr())) + if (LLLineSegmentBoxIntersect(mStart, mEnd, vl->mBounds[0], vl->mBounds[1])) { node->accept(this); for (S32 i = 0; i < node->getChildCount(); ++i) @@ -152,34 +146,60 @@ void LLOctreeTriangleRayIntersect::visit(const LLOctreeNode* n LLVector4a intersect = mDir; intersect.mul(*mClosestT); intersect.add(mStart); - mIntersection->set(intersect.getF32ptr()); + *mIntersection = intersect; } + U32 idx0 = tri->mIndex[0]; + U32 idx1 = tri->mIndex[1]; + U32 idx2 = tri->mIndex[2]; if (mTexCoord != NULL) { LLVector2* tc = (LLVector2*) mFace->mTexCoords; - *mTexCoord = ((1.f - a - b) * tc[tri->mIndex[0]] + - a * tc[tri->mIndex[1]] + - b * tc[tri->mIndex[2]]); + *mTexCoord = ((1.f - a - b) * tc[idx0] + + a * tc[idx1] + + b * tc[idx2]); } if (mNormal != NULL) { - LLVector4* norm = (LLVector4*) mFace->mNormals; - - *mNormal = ((1.f - a - b) * LLVector3(norm[tri->mIndex[0]]) + - a * LLVector3(norm[tri->mIndex[1]]) + - b * LLVector3(norm[tri->mIndex[2]])); + LLVector4a* norm = mFace->mNormals; + + LLVector4a n1,n2,n3; + n1 = norm[idx0]; + n1.mul(1.f-a-b); + + n2 = norm[idx1]; + n2.mul(a); + + n3 = norm[idx2]; + n3.mul(b); + + n1.add(n2); + n1.add(n3); + + *mNormal = n1; } - if (mBinormal != NULL) + if (mTangent != NULL) { - LLVector4* binormal = (LLVector4*) mFace->mBinormals; - *mBinormal = ((1.f - a - b) * LLVector3(binormal[tri->mIndex[0]]) + - a * LLVector3(binormal[tri->mIndex[1]]) + - b * LLVector3(binormal[tri->mIndex[2]])); + LLVector4a* tangents = mFace->mTangents; + + LLVector4a t1,t2,t3; + t1 = tangents[idx0]; + t1.mul(1.f-a-b); + + t2 = tangents[idx1]; + t2.mul(a); + + t3 = tangents[idx2]; + t3.mul(b); + + t1.add(t2); + t1.add(t3); + + *mTangent = t1; } } } diff --git a/indra/llmath/llvolumeoctree.h b/indra/llmath/llvolumeoctree.h index 9ae34a0c4e..80d6ced36d 100755 --- a/indra/llmath/llvolumeoctree.h +++ b/indra/llmath/llvolumeoctree.h @@ -137,16 +137,16 @@ public: LLVector4a mStart; LLVector4a mDir; LLVector4a mEnd; - LLVector3* mIntersection; + LLVector4a* mIntersection; LLVector2* mTexCoord; - LLVector3* mNormal; - LLVector3* mBinormal; + LLVector4a* mNormal; + LLVector4a* mTangent; F32* mClosestT; bool mHitFace; LLOctreeTriangleRayIntersect(const LLVector4a& start, const LLVector4a& dir, const LLVolumeFace* face, F32* closest_t, - LLVector3* intersection,LLVector2* tex_coord, LLVector3* normal, LLVector3* bi_normal); + LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent); void traverse(const LLOctreeNode* node); -- cgit v1.2.3