94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
/**
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* @file llviewerjointmesh_sse.cpp
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* @brief SSE vectorized joint skinning code, only used when video card does
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* not support avatar vertex programs.
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*
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* *NOTE: Disabled on Windows builds. See llv4math.h for details.
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*
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* Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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//-----------------------------------------------------------------------------
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// Header Files
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//-----------------------------------------------------------------------------
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#include "llviewerprecompiledheaders.h"
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#include "llviewerjointmesh.h"
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// project includes
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#include "llface.h"
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#include "llpolymesh.h"
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// library includes
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#include "lldarray.h"
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#include "llv4math.h" // for LL_VECTORIZE
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#include "llv4matrix3.h"
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#include "llv4matrix4.h"
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#include "v3math.h"
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#if LL_VECTORIZE
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static LLV4Matrix4 sJointMat[32];
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inline void matrix_translate(LLV4Matrix4& m, const LLMatrix4* w, const LLVector3& j)
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{
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m.mV[VX] = _mm_loadu_ps(w->mMatrix[VX]);
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m.mV[VY] = _mm_loadu_ps(w->mMatrix[VY]);
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m.mV[VZ] = _mm_loadu_ps(w->mMatrix[VZ]);
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m.mV[VW] = _mm_loadu_ps(w->mMatrix[VW]);
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m.mV[VW] = _mm_add_ps(m.mV[VW], _mm_mul_ps(_mm_set1_ps(j.mV[VX]), m.mV[VX])); // ( ax * vx ) + vw
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m.mV[VW] = _mm_add_ps(m.mV[VW], _mm_mul_ps(_mm_set1_ps(j.mV[VY]), m.mV[VY]));
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m.mV[VW] = _mm_add_ps(m.mV[VW], _mm_mul_ps(_mm_set1_ps(j.mV[VZ]), m.mV[VZ]));
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}
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// static
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void LLViewerJointMesh::updateGeometrySSE(LLFace *face, LLPolyMesh *mesh)
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{
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LLDynamicArray<LLJointRenderData*>& joint_data = mesh->getReferenceMesh()->mJointRenderData;
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//upload joint pivots/matrices
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for(S32 j = 0, jend = joint_data.count(); j < jend ; ++j )
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{
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matrix_translate(sJointMat[j], joint_data[j]->mWorldMatrix,
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joint_data[j]->mSkinJoint ?
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joint_data[j]->mSkinJoint->mRootToJointSkinOffset
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: joint_data[j+1]->mSkinJoint->mRootToParentJointSkinOffset);
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}
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F32 weight = F32_MAX;
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LLV4Matrix4 blend_mat;
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LLStrider<LLVector3> o_vertices;
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LLStrider<LLVector3> o_normals;
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LLVertexBuffer *buffer = face->mVertexBuffer;
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buffer->getVertexStrider(o_vertices, mesh->mFaceVertexOffset);
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buffer->getNormalStrider(o_normals, mesh->mFaceVertexOffset);
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const F32* weights = mesh->getWeights();
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const LLVector3* coords = mesh->getCoords();
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const LLVector3* normals = mesh->getNormals();
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for (U32 index = 0, index_end = mesh->getNumVertices(); index < index_end; ++index)
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{
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if( weight != weights[index])
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{
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S32 joint = llfloor(weight = weights[index]);
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blend_mat.lerp(sJointMat[joint], sJointMat[joint+1], weight - joint);
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}
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blend_mat.multiply(coords[index], o_vertices[index]);
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((LLV4Matrix3)blend_mat).multiply(normals[index], o_normals[index]);
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}
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}
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#else
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void LLViewerJointMesh::updateGeometrySSE(LLFace *face, LLPolyMesh *mesh)
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{
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LLViewerJointMesh::updateGeometryVectorized(face, mesh);
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}
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#endif
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