diff options
Diffstat (limited to 'indra/newview/llvoavatar.cpp')
-rw-r--r-- | indra/newview/llvoavatar.cpp | 379 |
1 files changed, 315 insertions, 64 deletions
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp index fd89044995..feb6db4700 100644 --- a/indra/newview/llvoavatar.cpp +++ b/indra/newview/llvoavatar.cpp @@ -63,6 +63,7 @@ #include "llkeyframefallmotion.h" #include "llkeyframestandmotion.h" #include "llkeyframewalkmotion.h" +#include "llmeshrepository.h" #include "llmutelist.h" #include "llmoveview.h" #include "llnotificationsutil.h" @@ -80,6 +81,7 @@ #include "llviewermenu.h" #include "llviewerobjectlist.h" #include "llviewerparcelmgr.h" +#include "llviewershadermgr.h" #include "llviewerstats.h" #include "llvoavatarself.h" #include "llvovolume.h" @@ -674,12 +676,14 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id, mTexHairColor( NULL ), mTexEyeColor( NULL ), mNeedsSkin(FALSE), + mLastSkinTime(0.f), mUpdatePeriod(1), mFullyLoaded(FALSE), mPreviousFullyLoaded(FALSE), mFullyLoadedInitialized(FALSE), mSupportsAlphaLayers(FALSE), - mLoadedCallbacksPaused(FALSE) + mLoadedCallbacksPaused(FALSE), + mHasPelvisOffset( FALSE ) { LLMemType mt(LLMemType::MTYPE_AVATAR); //VTResume(); // VTune @@ -754,6 +758,7 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id, mRuthTimer.reset(); mRuthDebugTimer.reset(); mDebugExistenceTimer.reset(); + mPelvisOffset = LLVector3(0.0f,0.0f,0.0f); } //------------------------------------------------------------------------ @@ -1338,41 +1343,46 @@ void LLVOAvatar::updateDrawable(BOOL force_damped) clearChanged(SHIFTED); } -void LLVOAvatar::onShift(const LLVector3& shift_vector) +void LLVOAvatar::onShift(const LLVector4a& shift_vector) { - mLastAnimExtents[0] += shift_vector; - mLastAnimExtents[1] += shift_vector; + const LLVector3& shift = reinterpret_cast<const LLVector3&>(shift_vector); + mLastAnimExtents[0] += shift; + mLastAnimExtents[1] += shift; mNeedsImpostorUpdate = TRUE; mNeedsAnimUpdate = TRUE; } -void LLVOAvatar::updateSpatialExtents(LLVector3& newMin, LLVector3 &newMax) +void LLVOAvatar::updateSpatialExtents(LLVector4a& newMin, LLVector4a &newMax) { if (isImpostor() && !needsImpostorUpdate()) { LLVector3 delta = getRenderPosition() - - ((LLVector3(mDrawable->getPositionGroup())-mImpostorOffset)); + ((LLVector3(mDrawable->getPositionGroup().getF32ptr())-mImpostorOffset)); - newMin = mLastAnimExtents[0] + delta; - newMax = mLastAnimExtents[1] + delta; + newMin.load3( (mLastAnimExtents[0] + delta).mV); + newMax.load3( (mLastAnimExtents[1] + delta).mV); } else { getSpatialExtents(newMin,newMax); - mLastAnimExtents[0] = newMin; - mLastAnimExtents[1] = newMax; - LLVector3 pos_group = (newMin+newMax)*0.5f; - mImpostorOffset = pos_group-getRenderPosition(); + mLastAnimExtents[0].set(newMin.getF32ptr()); + mLastAnimExtents[1].set(newMax.getF32ptr()); + LLVector4a pos_group; + pos_group.setAdd(newMin,newMax); + pos_group.mul(0.5f); + mImpostorOffset = LLVector3(pos_group.getF32ptr())-getRenderPosition(); mDrawable->setPositionGroup(pos_group); } } -void LLVOAvatar::getSpatialExtents(LLVector3& newMin, LLVector3& newMax) +void LLVOAvatar::getSpatialExtents(LLVector4a& newMin, LLVector4a& newMax) { - LLVector3 buffer(0.25f, 0.25f, 0.25f); - LLVector3 pos = getRenderPosition(); - newMin = pos - buffer; - newMax = pos + buffer; + LLVector4a buffer(0.25f); + LLVector4a pos; + pos.load3(getRenderPosition().mV); + newMin.setSub(pos, buffer); + newMax.setAdd(pos, buffer); + float max_attachment_span = DEFAULT_MAX_PRIM_SCALE * 5.0f; //stretch bounding box by joint positions @@ -1381,12 +1391,20 @@ void LLVOAvatar::getSpatialExtents(LLVector3& newMin, LLVector3& newMax) LLPolyMesh* mesh = i->second; for (S32 joint_num = 0; joint_num < mesh->mJointRenderData.count(); joint_num++) { - update_min_max(newMin, newMax, - mesh->mJointRenderData[joint_num]->mWorldMatrix->getTranslation()); + LLVector4a trans; + trans.load3( mesh->mJointRenderData[joint_num]->mWorldMatrix->getTranslation().mV); + update_min_max(newMin, newMax, trans); } } - mPixelArea = LLPipeline::calcPixelArea((newMin+newMax)*0.5f, (newMax-newMin)*0.5f, *LLViewerCamera::getInstance()); + LLVector4a center, size; + center.setAdd(newMin, newMax); + center.mul(0.5f); + + size.setSub(newMax,newMin); + size.mul(0.5f); + + mPixelArea = LLPipeline::calcPixelArea(center, size, *LLViewerCamera::getInstance()); //stretch bounding box by attachments for (attachment_map_t::iterator iter = mAttachmentPoints.begin(); @@ -1413,15 +1431,17 @@ void LLVOAvatar::getSpatialExtents(LLVector3& newMin, LLVector3& newMax) LLSpatialBridge* bridge = drawable->getSpatialBridge(); if (bridge) { - const LLVector3* ext = bridge->getSpatialExtents(); - LLVector3 distance = (ext[1] - ext[0]); + const LLVector4a* ext = bridge->getSpatialExtents(); + LLVector4a distance; + distance.setSub(ext[1], ext[0]); + LLVector4a max_span(max_attachment_span); + + S32 lt = distance.lessThan(max_span).getGatheredBits() & 0x7; // Only add the prim to spatial extents calculations if it isn't a megaprim. // max_attachment_span calculated at the start of the function // (currently 5 times our max prim size) - if (distance.mV[0] < max_attachment_span - && distance.mV[1] < max_attachment_span - && distance.mV[2] < max_attachment_span) + if (lt == 0x7) { update_min_max(newMin,newMax,ext[0]); update_min_max(newMin,newMax,ext[1]); @@ -1433,8 +1453,9 @@ void LLVOAvatar::getSpatialExtents(LLVector3& newMin, LLVector3& newMax) } //pad bounding box - newMin -= buffer; - newMax += buffer; + + newMin.sub(buffer); + newMax.add(buffer); } //----------------------------------------------------------------------------- @@ -1609,7 +1630,8 @@ BOOL LLVOAvatar::setupBone(const LLVOAvatarBoneInfo* info, LLViewerJoint* parent info->mRot.mV[VZ], LLQuaternion::XYZ)); joint->setScale(info->mScale); - + joint->setDefaultFromCurrentXform(); + if (info->mIsJoint) { joint->setSkinOffset( info->mPivot ); @@ -2399,9 +2421,19 @@ void LLVOAvatar::idleUpdateVoiceVisualizer(bool voice_enabled) // here we get the approximate head position and set as sound source for the voice symbol // (the following version uses a tweak of "mHeadOffset" which handle sitting vs. standing) //-------------------------------------------------------------------------------------------- - LLVector3 headOffset = LLVector3( 0.0f, 0.0f, mHeadOffset.mV[2] ); - mVoiceVisualizer->setVoiceSourceWorldPosition( mRoot.getWorldPosition() + headOffset ); + if ( mIsSitting ) + { + LLVector3 headOffset = LLVector3( 0.0f, 0.0f, mHeadOffset.mV[2] ); + mVoiceVisualizer->setVoiceSourceWorldPosition( mRoot.getWorldPosition() + headOffset ); + } + else + { + LLVector3 tagPos = mRoot.getWorldPosition(); + tagPos[VZ] -= mPelvisToFoot; + tagPos[VZ] += ( mBodySize[VZ] + 0.125f ); + mVoiceVisualizer->setVoiceSourceWorldPosition( tagPos ); + } }//if ( voiceEnabled ) } @@ -2465,7 +2497,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update) if (isImpostor() && !mNeedsImpostorUpdate) { - LLVector3 ext[2]; + LLVector4a ext[2]; F32 distance; LLVector3 angle; @@ -2494,12 +2526,22 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update) } else { + //VECTORIZE THIS getSpatialExtents(ext[0], ext[1]); - if ((ext[1]-mImpostorExtents[1]).length() > 0.05f || - (ext[0]-mImpostorExtents[0]).length() > 0.05f) + LLVector4a diff; + diff.setSub(ext[1], mImpostorExtents[1]); + if (diff.getLength3().getF32() > 0.05f) { mNeedsImpostorUpdate = TRUE; } + else + { + diff.setSub(ext[0], mImpostorExtents[0]); + if (diff.getLength3().getF32() > 0.05f) + { + mNeedsImpostorUpdate = TRUE; + } + } } } } @@ -2838,10 +2880,8 @@ void LLVOAvatar::idleUpdateNameTag(const LLVector3& root_pos_last) } LLVector3 name_position = idleUpdateNameTagPosition(root_pos_last); - mNameText->setPositionAgent(name_position); - - idleUpdateNameTagText(new_name); - + mNameText->setPositionAgent(name_position); + idleUpdateNameTagText(new_name); idleUpdateNameTagAlpha(new_name, alpha); } @@ -3127,8 +3167,9 @@ void LLVOAvatar::invalidateNameTags() if (avatar->isDead()) continue; avatar->clearNameTag(); - } - } + + } +} // Compute name tag position during idle update LLVector3 LLVOAvatar::idleUpdateNameTagPosition(const LLVector3& root_pos_last) @@ -3147,12 +3188,14 @@ LLVector3 LLVOAvatar::idleUpdateNameTagPosition(const LLVector3& root_pos_last) local_camera_up.scaleVec(mBodySize * 0.5f); local_camera_at.scaleVec(mBodySize * 0.5f); - LLVector3 name_position = mRoot.getWorldPosition() + - (local_camera_up * root_rot) - - (projected_vec(local_camera_at * root_rot, camera_to_av)); + LLVector3 name_position = mRoot.getWorldPosition(); + name_position[VZ] -= mPelvisToFoot; + name_position[VZ] += (mBodySize[VZ]* 0.55f); + name_position += (local_camera_up * root_rot) - (projected_vec(local_camera_at * root_rot, camera_to_av)); name_position += pixel_up_vec * 15.f; + return name_position; - } +} void LLVOAvatar::idleUpdateNameTagAlpha(BOOL new_name, F32 alpha) { @@ -3402,7 +3445,14 @@ BOOL LLVOAvatar::updateCharacter(LLAgent &agent) if (isSelf()) { - gAgent.setPositionAgent(getRenderPosition()); + if ( !mHasPelvisOffset ) + { + gAgent.setPositionAgent(getRenderPosition()); + } + else + { + gAgent.setPositionAgent( getRenderPosition() + mPelvisOffset ); + } } root_pos = gAgent.getPosGlobalFromAgent(getRenderPosition()); @@ -3421,14 +3471,21 @@ BOOL LLVOAvatar::updateCharacter(LLAgent &agent) // correct for the fact that the pelvis is not necessarily the center // of the agent's physical representation root_pos.mdV[VZ] -= (0.5f * mBodySize.mV[VZ]) - mPelvisToFoot; - LLVector3 newPosition = gAgent.getPosAgentFromGlobal(root_pos); if (newPosition != mRoot.getXform()->getWorldPosition()) { - mRoot.touch(); - mRoot.setWorldPosition(newPosition ); // regular update + if ( !mHasPelvisOffset ) + { + mRoot.touch(); + mRoot.setWorldPosition( newPosition ); // regular update + } + else + { + mRoot.touch(); + mRoot.setWorldPosition( newPosition + mPelvisOffset ); + } } @@ -3729,7 +3786,27 @@ void LLVOAvatar::updateHeadOffset() mHeadOffset = lerp(midEyePt, mHeadOffset, u); } } - +//------------------------------------------------------------------------ +// setPelvisOffset +//------------------------------------------------------------------------ +void LLVOAvatar::setPelvisOffset( bool hasOffset, const LLVector3& offsetAmount ) +{ + mHasPelvisOffset = hasOffset; + if ( mHasPelvisOffset ) + { + mPelvisOffset = offsetAmount; + } +} +//------------------------------------------------------------------------ +// postPelvisSetRecalc +//------------------------------------------------------------------------ +void LLVOAvatar::postPelvisSetRecalc( void ) +{ + computeBodySize(); + mRoot.updateWorldMatrixChildren(); + dirtyMesh(); + updateHeadOffset(); +} //------------------------------------------------------------------------ // updateVisibility() //------------------------------------------------------------------------ @@ -3879,6 +3956,46 @@ bool LLVOAvatar::shouldAlphaMask() } +U32 LLVOAvatar::renderSkinnedAttachments() +{ + /*U32 num_indices = 0; + + const U32 data_mask = LLVertexBuffer::MAP_VERTEX | + LLVertexBuffer::MAP_NORMAL | + LLVertexBuffer::MAP_TEXCOORD0 | + LLVertexBuffer::MAP_COLOR | + LLVertexBuffer::MAP_WEIGHT4; + + for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin(); + iter != mAttachmentPoints.end(); + ++iter) + { + LLViewerJointAttachment* attachment = iter->second; + for (LLViewerJointAttachment::attachedobjs_vec_t::iterator attachment_iter = attachment->mAttachedObjects.begin(); + attachment_iter != attachment->mAttachedObjects.end(); + ++attachment_iter) + { + const LLViewerObject* attached_object = (*attachment_iter); + if (attached_object && !attached_object->isHUDAttachment()) + { + const LLDrawable* drawable = attached_object->mDrawable; + if (drawable) + { + for (S32 i = 0; i < drawable->getNumFaces(); ++i) + { + LLFace* face = drawable->getFace(i); + if (face->isState(LLFace::RIGGED)) + { + + } + } + } + } + + return num_indices;*/ + return 0; +} + //----------------------------------------------------------------------------- // renderSkinned() //----------------------------------------------------------------------------- @@ -3926,7 +4043,8 @@ U32 LLVOAvatar::renderSkinned(EAvatarRenderPass pass) mMeshLOD[MESH_ID_HAIR]->updateJointGeometry(); } mNeedsSkin = FALSE; - + mLastSkinTime = gFrameTimeSeconds; + LLVertexBuffer* vb = mDrawable->getFace(0)->mVertexBuffer; if (vb) { @@ -4274,7 +4392,7 @@ void LLVOAvatar::updateTextures() if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXTURE_AREA)) { - setDebugText(llformat("%4.0f:%4.0f", fsqrtf(mMinPixelArea),fsqrtf(mMaxPixelArea))); + setDebugText(llformat("%4.0f:%4.0f", (F32) sqrt(mMinPixelArea),(F32) sqrt(mMaxPixelArea))); } } @@ -4818,6 +4936,74 @@ LLJoint *LLVOAvatar::getJoint( const std::string &name ) } //----------------------------------------------------------------------------- +// resetJointPositions +//----------------------------------------------------------------------------- +void LLVOAvatar::resetJointPositions( void ) +{ + for(S32 i = 0; i < (S32)mNumJoints; ++i) + { + mSkeleton[i].restoreOldXform(); + mSkeleton[i].setId( LLUUID::null ); + } + mHasPelvisOffset = false; +} +//----------------------------------------------------------------------------- +// resetSpecificJointPosition +//----------------------------------------------------------------------------- +void LLVOAvatar::resetSpecificJointPosition( const std::string& name ) +{ + LLJoint* pJoint = mRoot.findJoint( name ); + + if ( pJoint ) + { + pJoint->restoreOldXform(); + pJoint->setId( LLUUID::null ); + //If we're reseting the pelvis position make sure not to apply offset + if ( name == "mPelvis" ) + { + mHasPelvisOffset = false; + } + } + else + { + llinfos<<"Did not find "<< name.c_str()<<llendl; + } +} +//----------------------------------------------------------------------------- +// resetJointPositionsToDefault +//----------------------------------------------------------------------------- +void LLVOAvatar::resetJointPositionsToDefault( void ) +{ + const LLVector3& avPos = getCharacterPosition(); + + //Reposition the pelvis + LLJoint* pPelvis = mRoot.findJoint("mPelvis"); + if ( pPelvis ) + { + pPelvis->setPosition( avPos + pPelvis->getPosition() ); + } + else + { + llwarns<<"Can't get pelvis joint."<<llendl; + return; + } + + //Subsequent joints are relative to pelvis + for( S32 i = 0; i < (S32)mNumJoints; ++i ) + { + LLJoint* pJoint = (LLJoint*)&mSkeleton[i]; + pJoint->setId( LLUUID::null ); + //restore joints to default positions, however skip over the pelvis + if ( pJoint && pPelvis != pJoint ) + { + pJoint->restoreOldXform(); + } + } + //make sure we don't apply the joint offset + mHasPelvisOffset = false; + postPelvisSetRecalc(); +} +//----------------------------------------------------------------------------- // getCharacterPosition() //----------------------------------------------------------------------------- LLVector3 LLVOAvatar::getCharacterPosition() @@ -5479,9 +5665,13 @@ void LLVOAvatar::setPixelAreaAndAngle(LLAgent &agent) return; } - const LLVector3* ext = mDrawable->getSpatialExtents(); - LLVector3 center = (ext[1] + ext[0]) * 0.5f; - LLVector3 size = (ext[1]-ext[0])*0.5f; + const LLVector4a* ext = mDrawable->getSpatialExtents(); + LLVector4a center; + center.setAdd(ext[1], ext[0]); + center.mul(0.5f); + LLVector4a size; + size.setSub(ext[1], ext[0]); + size.mul(0.5f); mImpostorPixelArea = LLPipeline::calcPixelArea(center, size, *LLViewerCamera::getInstance()); @@ -5493,7 +5683,7 @@ void LLVOAvatar::setPixelAreaAndAngle(LLAgent &agent) } else { - F32 radius = size.length(); + F32 radius = size.getLength3().getF32(); mAppAngle = (F32) atan2( radius, range) * RAD_TO_DEG; } @@ -5690,8 +5880,7 @@ LLViewerJointAttachment* LLVOAvatar::getTargetAttachmentPoint(LLViewerObject* vi // correctly, but putting this check in here to be safe. if (attachmentID & ATTACHMENT_ADD) { - llwarns << "Got an attachment with ATTACHMENT_ADD mask, removing ( attach pt:" << attachmentID << " )" << llendl; - attachmentID &= ~ATTACHMENT_ADD; + llwarns << "Got an attachment with ATTACHMENT_ADD mask, removing ( attach pt:" << attachmentID << " )" << llendl; attachmentID &= ~ATTACHMENT_ADD; } LLViewerJointAttachment* attachment = get_if_there(mAttachmentPoints, attachmentID, (LLViewerJointAttachment*)NULL); @@ -5804,6 +5993,52 @@ void LLVOAvatar::resetHUDAttachments() } } +void LLVOAvatar::rebuildRiggedAttachments( void ) +{ + for ( attachment_map_t::iterator iter = mAttachmentPoints.begin(); iter != mAttachmentPoints.end(); ++iter ) + { + LLViewerJointAttachment* pAttachment = iter->second; + LLViewerJointAttachment::attachedobjs_vec_t::iterator attachmentIterEnd = pAttachment->mAttachedObjects.end(); + + for ( LLViewerJointAttachment::attachedobjs_vec_t::iterator attachmentIter = pAttachment->mAttachedObjects.begin(); + attachmentIter != attachmentIterEnd; ++attachmentIter) + { + const LLViewerObject* pAttachedObject = *attachmentIter; + if ( pAttachment && pAttachedObject->mDrawable.notNull() ) + { + gPipeline.markRebuild(pAttachedObject->mDrawable); + } + } + } +} +//----------------------------------------------------------------------------- +// cleanupAttachedMesh() +//----------------------------------------------------------------------------- +void LLVOAvatar::cleanupAttachedMesh( LLViewerObject* pVO ) +{ + //If a VO has a skin that we'll reset the joint positions to their default + if ( pVO && pVO->mDrawable ) + { + LLVOVolume* pVObj = pVO->mDrawable->getVOVolume(); + if ( pVObj ) + { + const LLMeshSkinInfo* pSkinData = gMeshRepo.getSkinInfo( pVObj->getVolume()->getParams().getSculptID() ); + if ( pSkinData ) + { + const int jointCnt = pSkinData->mJointNames.size(); + bool fullRig = ( jointCnt>=20 ) ? true : false; + if ( fullRig ) + { + const int bindCnt = pSkinData->mAlternateBindMatrix.size(); + if ( bindCnt > 0 ) + { + LLVOAvatar::resetJointPositionsToDefault(); + } + } + } + } + } +} //----------------------------------------------------------------------------- // detachObject() //----------------------------------------------------------------------------- @@ -5814,14 +6049,23 @@ BOOL LLVOAvatar::detachObject(LLViewerObject *viewer_object) ++iter) { LLViewerJointAttachment* attachment = iter->second; - + if (attachment->isObjectAttached(viewer_object)) { + cleanupAttachedMesh( viewer_object ); attachment->removeObject(viewer_object); lldebugs << "Detaching object " << viewer_object->mID << " from " << attachment->getName() << llendl; return TRUE; } } + + std::vector<LLPointer<LLViewerObject> >::iterator iter = std::find(mPendingAttachment.begin(), mPendingAttachment.end(), viewer_object); + if (iter != mPendingAttachment.end()) + { + mPendingAttachment.erase(iter); + return TRUE; + } + return FALSE; } @@ -7976,9 +8220,9 @@ void LLVOAvatar::cacheImpostorValues() getImpostorValues(mImpostorExtents, mImpostorAngle, mImpostorDistance); } -void LLVOAvatar::getImpostorValues(LLVector3* extents, LLVector3& angle, F32& distance) const +void LLVOAvatar::getImpostorValues(LLVector4a* extents, LLVector3& angle, F32& distance) const { - const LLVector3* ext = mDrawable->getSpatialExtents(); + const LLVector4a* ext = mDrawable->getSpatialExtents(); extents[0] = ext[0]; extents[1] = ext[1]; @@ -7992,7 +8236,7 @@ void LLVOAvatar::getImpostorValues(LLVector3* extents, LLVector3& angle, F32& di void LLVOAvatar::idleUpdateRenderCost() { - static const U32 ARC_BODY_PART_COST = 20; + static const U32 ARC_BODY_PART_COST = 200; static const U32 ARC_LIMIT = 2048; static std::set<LLUUID> all_textures; @@ -8003,7 +8247,7 @@ void LLVOAvatar::idleUpdateRenderCost() } U32 cost = 0; - std::set<LLUUID> textures; + LLVOVolume::texture_cost_t textures; for (U8 baked_index = 0; baked_index < BAKED_NUM_INDICES; baked_index++) { @@ -8041,16 +8285,24 @@ void LLVOAvatar::idleUpdateRenderCost() } } } + } + + for (LLVOVolume::texture_cost_t::iterator iter = textures.begin(); iter != textures.end(); ++iter) + { + // add the cost of each individual texture in the linkset + cost += iter->second; + } + // Diagnostic output to identify all avatar-related textures. // Does not affect rendering cost calculation. // Could be wrapped in a debug option if output becomes problematic. if (isSelf()) { // print any attachment textures we didn't already know about. - for (std::set<LLUUID>::iterator it = textures.begin(); it != textures.end(); ++it) + for (LLVOVolume::texture_cost_t::iterator it = textures.begin(); it != textures.end(); ++it) { - LLUUID image_id = *it; + LLUUID image_id = it->first; if( image_id.isNull() || image_id == IMG_DEFAULT || image_id == IMG_DEFAULT_AVATAR) continue; if (all_textures.find(image_id) == all_textures.end()) @@ -8081,7 +8333,6 @@ void LLVOAvatar::idleUpdateRenderCost() } } } - cost += textures.size() * LLVOVolume::ARC_TEXTURE_COST; setDebugText(llformat("%d", cost)); F32 green = 1.f-llclamp(((F32) cost-(F32)ARC_LIMIT)/(F32)ARC_LIMIT, 0.f, 1.f); |