llviewerjointmesh_vec.cpp
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- /**
- * @file llviewerjointmesh_vec.cpp
- * @brief Compiler-generated vectorized joint skinning code, works well on
- * Altivec processors (PowerPC Mac)
- *
- * *NOTE: See llv4math.h for notes on SSE/Altivec vector code.
- *
- * $LicenseInfo:firstyear=2007&license=viewergpl$
- *
- * Copyright (c) 2007-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- //-----------------------------------------------------------------------------
- // Header Files
- //-----------------------------------------------------------------------------
- #include "llviewerprecompiledheaders.h"
- #include "llviewerjointmesh.h"
- #include "llface.h"
- #include "llpolymesh.h"
- #include "llv4math.h"
- #include "llv4matrix3.h"
- #include "llv4matrix4.h"
- // Generic vectorized code, uses compiler defaults, works well for Altivec
- // on PowerPC.
- // static
- void LLViewerJointMesh::updateGeometryVectorized(LLFace *face, LLPolyMesh *mesh)
- {
- static LLV4Matrix4 sJointMat[32];
- LLDynamicArray<LLJointRenderData*>& joint_data = mesh->getReferenceMesh()->mJointRenderData;
- S32 j, joint_num, joint_end = joint_data.count();
- LLV4Vector3 pivot;
- //upload joint pivots/matrices
- for(j = joint_num = 0; joint_num < joint_end ; ++joint_num )
- {
- LLSkinJoint *sj;
- const LLMatrix4 * wm = joint_data[joint_num]->mWorldMatrix;
- if (NULL == (sj = joint_data[joint_num]->mSkinJoint))
- {
- sj = joint_data[++joint_num]->mSkinJoint;
- ((LLV4Matrix3)(sJointMat[j] = *wm)).multiply(sj->mRootToParentJointSkinOffset, pivot);
- sJointMat[j++].translate(pivot);
- wm = joint_data[joint_num]->mWorldMatrix;
- }
- ((LLV4Matrix3)(sJointMat[j] = *wm)).multiply(sj->mRootToJointSkinOffset, pivot);
- sJointMat[j++].translate(pivot);
- }
- F32 weight = F32_MAX;
- LLV4Matrix4 blend_mat;
- LLStrider<LLVector3> o_vertices;
- LLStrider<LLVector3> o_normals;
- LLVertexBuffer *buffer = face->mVertexBuffer;
- buffer->getVertexStrider(o_vertices, mesh->mFaceVertexOffset);
- buffer->getNormalStrider(o_normals, mesh->mFaceVertexOffset);
- const F32* weights = mesh->getWeights();
- const LLVector3* coords = mesh->getCoords();
- const LLVector3* normals = mesh->getNormals();
- for (U32 index = 0, index_end = mesh->getNumVertices(); index < index_end; ++index)
- {
- if( weight != weights[index])
- {
- S32 joint = llfloor(weight = weights[index]);
- blend_mat.lerp(sJointMat[joint], sJointMat[joint+1], weight - joint);
- }
- blend_mat.multiply(coords[index], o_vertices[index]);
- ((LLV4Matrix3)blend_mat).multiply(normals[index], o_normals[index]);
- }
- buffer->setBuffer(0);
- }