diff options
Diffstat (limited to 'indra/newview/llvieweroctree.cpp')
| -rw-r--r-- | indra/newview/llvieweroctree.cpp | 620 |
1 files changed, 619 insertions, 1 deletions
diff --git a/indra/newview/llvieweroctree.cpp b/indra/newview/llvieweroctree.cpp index 926d791d1f..844075089f 100644 --- a/indra/newview/llvieweroctree.cpp +++ b/indra/newview/llvieweroctree.cpp @@ -27,6 +27,11 @@ #include "llviewerprecompiledheaders.h" #include "llvieweroctree.h" #include "llviewerregion.h" +#include "pipeline.h" +#include "llviewercontrol.h" +#include "llappviewer.h" +#include "llglslshader.h" +#include "llviewershadermgr.h" //----------------------------------------------------------------------------------- //static variables definitions @@ -37,6 +42,100 @@ BOOL LLViewerOctreeDebug::sInDebug = FALSE; //----------------------------------------------------------------------------------- //some global functions definitions //----------------------------------------------------------------------------------- +typedef enum +{ + b000 = 0x00, + b001 = 0x01, + b010 = 0x02, + b011 = 0x03, + b100 = 0x04, + b101 = 0x05, + b110 = 0x06, + b111 = 0x07, +} eLoveTheBits; + +//contact Runitai Linden for a copy of the SL object used to write this table +//basically, you give the table a bitmask of the look-at vector to a node and it +//gives you a triangle fan index array +static U16 sOcclusionIndices[] = +{ + //000 + b111, b110, b010, b011, b001, b101, b100, b110, + //001 + b011, b010, b000, b001, b101, b111, b110, b010, + //010 + b101, b100, b110, b111, b011, b001, b000, b100, + //011 + b001, b000, b100, b101, b111, b011, b010, b000, + //100 + b110, b000, b010, b011, b111, b101, b100, b000, + //101 + b010, b100, b000, b001, b011, b111, b110, b100, + //110 + b100, b010, b110, b111, b101, b001, b000, b010, + //111 + b000, b110, b100, b101, b001, b011, b010, b110, +}; + +U32 get_box_fan_indices(LLCamera* camera, const LLVector4a& center) +{ + LLVector4a origin; + origin.load3(camera->getOrigin().mV); + + S32 cypher = center.greaterThan(origin).getGatheredBits() & 0x7; + + return cypher*8; +} + +U8* get_box_fan_indices_ptr(LLCamera* camera, const LLVector4a& center) +{ + LLVector4a origin; + origin.load3(camera->getOrigin().mV); + + S32 cypher = center.greaterThan(origin).getGatheredBits() & 0x7; + + return (U8*) (sOcclusionIndices+cypher*8); +} + +//create a vertex buffer for efficiently rendering cubes +LLVertexBuffer* ll_create_cube_vb(U32 type_mask, U32 usage) +{ + LLVertexBuffer* ret = new LLVertexBuffer(type_mask, usage); + + ret->allocateBuffer(8, 64, true); + + LLStrider<LLVector3> pos; + LLStrider<U16> idx; + + ret->getVertexStrider(pos); + ret->getIndexStrider(idx); + + pos[0] = LLVector3(-1,-1,-1); + pos[1] = LLVector3(-1,-1, 1); + pos[2] = LLVector3(-1, 1,-1); + pos[3] = LLVector3(-1, 1, 1); + pos[4] = LLVector3( 1,-1,-1); + pos[5] = LLVector3( 1,-1, 1); + pos[6] = LLVector3( 1, 1,-1); + pos[7] = LLVector3( 1, 1, 1); + + for (U32 i = 0; i < 64; i++) + { + idx[i] = sOcclusionIndices[i]; + } + + ret->flush(); + + return ret; +} + + +#define LL_TRACK_PENDING_OCCLUSION_QUERIES 0 + +const F32 SG_OCCLUSION_FUDGE = 0.25f; +#define SG_DISCARD_TOLERANCE 0.01f + + S32 AABBSphereIntersect(const LLVector3& min, const LLVector3& max, const LLVector3 &origin, const F32 &rad) { return AABBSphereIntersectR2(min, max, origin, rad*rad); @@ -540,6 +639,11 @@ void LLviewerOctreeGroup::handleChildRemoval(const OctreeNode* parent, const Oct LLviewerOctreeGroup* LLviewerOctreeGroup::getParent() { + if (isDead()) + { + return NULL; + } + if(!mOctreeNode) { return NULL; @@ -629,10 +733,519 @@ void LLviewerOctreeGroup::setVisible() { mVisible[LLViewerCamera::sCurCameraID] = LLViewerOctreeEntryData::getCurrentFrame(); } + +void LLviewerOctreeGroup::checkStates() +{ +#if LL_OCTREE_PARANOIA_CHECK + //LLOctreeStateCheck checker; + //checker.traverse(mOctreeNode); +#endif +} + +//------------------------------------------------------------------------------------------- +//occulsion culling functions and classes +//------------------------------------------------------------------------------------------- +std::set<U32> LLOcclusionCullingGroup::sPendingQueries; +class LLOcclusionQueryPool : public LLGLNamePool +{ +public: + LLOcclusionQueryPool() + { + mCurQuery = 1; + } + +protected: + + std::list<GLuint> mAvailableName; + GLuint mCurQuery; + + virtual GLuint allocateName() + { + GLuint ret = 0; + + if (!mAvailableName.empty()) + { + ret = mAvailableName.front(); + mAvailableName.pop_front(); + } + else + { + ret = mCurQuery++; + } + + return ret; + } + + virtual void releaseName(GLuint name) + { +#if LL_TRACK_PENDING_OCCLUSION_QUERIES + LLSpatialGroup::sPendingQueries.erase(name); +#endif + llassert(std::find(mAvailableName.begin(), mAvailableName.end(), name) == mAvailableName.end()); + mAvailableName.push_back(name); + } +}; + +static LLOcclusionQueryPool sQueryPool; +U32 LLOcclusionCullingGroup::getNewOcclusionQueryObjectName() +{ + return sQueryPool.allocate(); +} + +void LLOcclusionCullingGroup::releaseOcclusionQueryObjectName(GLuint name) +{ + sQueryPool.release(name); +} + +//===================================== +// Occlusion State Set/Clear +//===================================== +class LLSpatialSetOcclusionState : public OctreeTraveler +{ +public: + U32 mState; + LLSpatialSetOcclusionState(U32 state) : mState(state) { } + virtual void visit(const OctreeNode* branch) { ((LLOcclusionCullingGroup*) branch->getListener(0))->setOcclusionState(mState); } +}; + +class LLSpatialSetOcclusionStateDiff : public LLSpatialSetOcclusionState +{ +public: + LLSpatialSetOcclusionStateDiff(U32 state) : LLSpatialSetOcclusionState(state) { } + + virtual void traverse(const OctreeNode* n) + { + LLOcclusionCullingGroup* group = (LLOcclusionCullingGroup*) n->getListener(0); + + if (!group->isOcclusionState(mState)) + { + OctreeTraveler::traverse(n); + } + } +}; + + +LLOcclusionCullingGroup::LLOcclusionCullingGroup(OctreeNode* node, LLViewerOctreePartition* part) : + LLviewerOctreeGroup(node), + mSpatialPartition(part) +{ + part->mLODSeed = (part->mLODSeed+1)%part->mLODPeriod; + mLODHash = part->mLODSeed; + + OctreeNode* oct_parent = node->getOctParent(); + LLOcclusionCullingGroup* parent = oct_parent ? (LLOcclusionCullingGroup*) oct_parent->getListener(0) : NULL; + + for (U32 i = 0; i < LLViewerCamera::NUM_CAMERAS; i++) + { + mOcclusionQuery[i] = 0; + mOcclusionIssued[i] = 0; + mOcclusionState[i] = parent ? SG_STATE_INHERIT_MASK & parent->mOcclusionState[i] : 0; + mVisible[i] = 0; + } +} + +LLOcclusionCullingGroup::~LLOcclusionCullingGroup() +{ + releaseOcclusionQueryObjectNames(); +} + +BOOL LLOcclusionCullingGroup::needsUpdate() +{ + return (LLDrawable::getCurrentFrame() % mSpatialPartition->mLODPeriod == mLODHash) ? TRUE : FALSE; +} + +//virtual +void LLOcclusionCullingGroup::handleChildAddition(const OctreeNode* parent, OctreeNode* child) +{ + if (child->getListenerCount() == 0) + { + new LLOcclusionCullingGroup(child, mSpatialPartition); + } + else + { + OCT_ERRS << "LLOcclusionCullingGroup redundancy detected." << llendl; + } + + unbound(); + + ((LLviewerOctreeGroup*)child->getListener(0))->unbound(); +} + +void LLOcclusionCullingGroup::releaseOcclusionQueryObjectNames() +{ + if (gGLManager.mHasOcclusionQuery) + { + for (U32 i = 0; i < LLViewerCamera::NUM_CAMERAS; ++i) + { + if (mOcclusionQuery[i]) + { + releaseOcclusionQueryObjectName(mOcclusionQuery[i]); + mOcclusionQuery[i] = 0; + } + } + } +} + +void LLOcclusionCullingGroup::setOcclusionState(U32 state, S32 mode) +{ + if (mode > STATE_MODE_SINGLE) + { + if (mode == STATE_MODE_DIFF) + { + LLSpatialSetOcclusionStateDiff setter(state); + setter.traverse(mOctreeNode); + } + else if (mode == STATE_MODE_BRANCH) + { + LLSpatialSetOcclusionState setter(state); + setter.traverse(mOctreeNode); + } + else + { + for (U32 i = 0; i < LLViewerCamera::NUM_CAMERAS; i++) + { + mOcclusionState[i] |= state; + + if ((state & DISCARD_QUERY) && mOcclusionQuery[i]) + { + releaseOcclusionQueryObjectName(mOcclusionQuery[i]); + mOcclusionQuery[i] = 0; + } + } + } + } + else + { + mOcclusionState[LLViewerCamera::sCurCameraID] |= state; + if ((state & DISCARD_QUERY) && mOcclusionQuery[LLViewerCamera::sCurCameraID]) + { + releaseOcclusionQueryObjectName(mOcclusionQuery[LLViewerCamera::sCurCameraID]); + mOcclusionQuery[LLViewerCamera::sCurCameraID] = 0; + } + } +} + +class LLSpatialClearOcclusionState : public OctreeTraveler +{ +public: + U32 mState; + + LLSpatialClearOcclusionState(U32 state) : mState(state) { } + virtual void visit(const OctreeNode* branch) { ((LLOcclusionCullingGroup*) branch->getListener(0))->clearOcclusionState(mState); } +}; + +class LLSpatialClearOcclusionStateDiff : public LLSpatialClearOcclusionState +{ +public: + LLSpatialClearOcclusionStateDiff(U32 state) : LLSpatialClearOcclusionState(state) { } + + virtual void traverse(const OctreeNode* n) + { + LLOcclusionCullingGroup* group = (LLOcclusionCullingGroup*) n->getListener(0); + + if (group->isOcclusionState(mState)) + { + OctreeTraveler::traverse(n); + } + } +}; + +void LLOcclusionCullingGroup::clearOcclusionState(U32 state, S32 mode) +{ + if (mode > STATE_MODE_SINGLE) + { + if (mode == STATE_MODE_DIFF) + { + LLSpatialClearOcclusionStateDiff clearer(state); + clearer.traverse(mOctreeNode); + } + else if (mode == STATE_MODE_BRANCH) + { + LLSpatialClearOcclusionState clearer(state); + clearer.traverse(mOctreeNode); + } + else + { + for (U32 i = 0; i < LLViewerCamera::NUM_CAMERAS; i++) + { + mOcclusionState[i] &= ~state; + } + } + } + else + { + mOcclusionState[LLViewerCamera::sCurCameraID] &= ~state; + } +} + +static LLFastTimer::DeclareTimer FTM_OCCLUSION_READBACK("Readback Occlusion"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_WAIT("Occlusion Wait"); + +BOOL LLOcclusionCullingGroup::earlyFail(LLCamera* camera) +{ + if (camera->getOrigin().isExactlyZero()) + { + return FALSE; + } + + const F32 vel = SG_OCCLUSION_FUDGE*2.f; + LLVector4a fudge; + fudge.splat(vel); + + const LLVector4a* bounds = getBounds(); + const LLVector4a& c = bounds[0]; + LLVector4a r; + r.setAdd(bounds[1], fudge); + + /*if (r.magVecSquared() > 1024.0*1024.0) + { + return TRUE; + }*/ + + LLVector4a e; + e.load3(camera->getOrigin().mV); + + LLVector4a min; + min.setSub(c,r); + LLVector4a max; + max.setAdd(c,r); + + S32 lt = e.lessThan(min).getGatheredBits() & 0x7; + if (lt) + { + return FALSE; + } + + S32 gt = e.greaterThan(max).getGatheredBits() & 0x7; + if (gt) + { + return FALSE; + } + + return TRUE; +} + +void LLOcclusionCullingGroup::checkOcclusion() +{ + if (LLPipeline::sUseOcclusion > 1) + { + LLFastTimer t(FTM_OCCLUSION_READBACK); + LLOcclusionCullingGroup* parent = (LLOcclusionCullingGroup*)getParent(); + if (parent && parent->isOcclusionState(LLOcclusionCullingGroup::OCCLUDED)) + { //if the parent has been marked as occluded, the child is implicitly occluded + clearOcclusionState(QUERY_PENDING | DISCARD_QUERY); + } + else if (isOcclusionState(QUERY_PENDING)) + { //otherwise, if a query is pending, read it back + + GLuint available = 0; + if (mOcclusionQuery[LLViewerCamera::sCurCameraID]) + { + glGetQueryObjectuivARB(mOcclusionQuery[LLViewerCamera::sCurCameraID], GL_QUERY_RESULT_AVAILABLE_ARB, &available); + + static LLCachedControl<bool> wait_for_query(gSavedSettings, "RenderSynchronousOcclusion"); + + if (wait_for_query && mOcclusionIssued[LLViewerCamera::sCurCameraID] < gFrameCount) + { //query was issued last frame, wait until it's available + S32 max_loop = 1024; + LLFastTimer t(FTM_OCCLUSION_WAIT); + while (!available && max_loop-- > 0) + { + //do some usefu work while we wait + F32 max_time = llmin(gFrameIntervalSeconds.value()*10.f, 1.f); + LLAppViewer::instance()->updateTextureThreads(max_time); + + glGetQueryObjectuivARB(mOcclusionQuery[LLViewerCamera::sCurCameraID], GL_QUERY_RESULT_AVAILABLE_ARB, &available); + } + } + } + else + { + available = 1; + } + + if (available) + { //result is available, read it back, otherwise wait until next frame + GLuint res = 1; + if (!isOcclusionState(DISCARD_QUERY) && mOcclusionQuery[LLViewerCamera::sCurCameraID]) + { + glGetQueryObjectuivARB(mOcclusionQuery[LLViewerCamera::sCurCameraID], GL_QUERY_RESULT_ARB, &res); +#if LL_TRACK_PENDING_OCCLUSION_QUERIES + sPendingQueries.erase(mOcclusionQuery[LLViewerCamera::sCurCameraID]); +#endif + } + else if (mOcclusionQuery[LLViewerCamera::sCurCameraID]) + { //delete the query to avoid holding onto hundreds of pending queries + releaseOcclusionQueryObjectName(mOcclusionQuery[LLViewerCamera::sCurCameraID]); + mOcclusionQuery[LLViewerCamera::sCurCameraID] = 0; + } + + if (isOcclusionState(DISCARD_QUERY)) + { + res = 2; + } + + if (res > 0) + { + assert_states_valid(this); + clearOcclusionState(LLOcclusionCullingGroup::OCCLUDED, LLOcclusionCullingGroup::STATE_MODE_DIFF); + assert_states_valid(this); + } + else + { + assert_states_valid(this); + + setOcclusionState(LLOcclusionCullingGroup::OCCLUDED, LLOcclusionCullingGroup::STATE_MODE_DIFF); + + assert_states_valid(this); + } + + clearOcclusionState(QUERY_PENDING | DISCARD_QUERY); + } + } + else if (mSpatialPartition->isOcclusionEnabled() && isOcclusionState(LLOcclusionCullingGroup::OCCLUDED)) + { //check occlusion has been issued for occluded node that has not had a query issued + assert_states_valid(this); + clearOcclusionState(LLOcclusionCullingGroup::OCCLUDED, LLOcclusionCullingGroup::STATE_MODE_DIFF); + assert_states_valid(this); + } + } +} + +static LLFastTimer::DeclareTimer FTM_PUSH_OCCLUSION_VERTS("Push Occlusion"); +static LLFastTimer::DeclareTimer FTM_SET_OCCLUSION_STATE("Occlusion State"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_EARLY_FAIL("Occlusion Early Fail"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_ALLOCATE("Allocate"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_BUILD("Build"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_BEGIN_QUERY("Begin Query"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_END_QUERY("End Query"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_SET_BUFFER("Set Buffer"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_DRAW_WATER("Draw Water"); +static LLFastTimer::DeclareTimer FTM_OCCLUSION_DRAW("Draw"); + +void LLOcclusionCullingGroup::doOcclusion(LLCamera* camera) +{ + if (mSpatialPartition->isOcclusionEnabled() && LLPipeline::sUseOcclusion > 1) + { + // Don't cull hole/edge water, unless we have the GL_ARB_depth_clamp extension + if (earlyFail(camera)) + { + LLFastTimer t(FTM_OCCLUSION_EARLY_FAIL); + setOcclusionState(LLOcclusionCullingGroup::DISCARD_QUERY); + assert_states_valid(this); + clearOcclusionState(LLOcclusionCullingGroup::OCCLUDED, LLOcclusionCullingGroup::STATE_MODE_DIFF); + assert_states_valid(this); + } + else + { + if (!isOcclusionState(QUERY_PENDING) || isOcclusionState(DISCARD_QUERY)) + { + { //no query pending, or previous query to be discarded + LLFastTimer t(FTM_RENDER_OCCLUSION); + + if (!mOcclusionQuery[LLViewerCamera::sCurCameraID]) + { + LLFastTimer t(FTM_OCCLUSION_ALLOCATE); + mOcclusionQuery[LLViewerCamera::sCurCameraID] = getNewOcclusionQueryObjectName(); + } + + // Depth clamp all water to avoid it being culled as a result of being + // behind the far clip plane, and in the case of edge water to avoid + // it being culled while still visible. + bool const use_depth_clamp = gGLManager.mHasDepthClamp && + (mSpatialPartition->mDrawableType == LLDrawPool::POOL_WATER || + mSpatialPartition->mDrawableType == LLDrawPool::POOL_VOIDWATER); + + LLGLEnable clamp(use_depth_clamp ? GL_DEPTH_CLAMP : 0); + +#if !LL_DARWIN + U32 mode = gGLManager.mHasOcclusionQuery2 ? GL_ANY_SAMPLES_PASSED : GL_SAMPLES_PASSED_ARB; +#else + U32 mode = GL_SAMPLES_PASSED_ARB; +#endif + +#if LL_TRACK_PENDING_OCCLUSION_QUERIES + sPendingQueries.insert(mOcclusionQuery[LLViewerCamera::sCurCameraID]); +#endif + + { + LLFastTimer t(FTM_PUSH_OCCLUSION_VERTS); + + //store which frame this query was issued on + mOcclusionIssued[LLViewerCamera::sCurCameraID] = gFrameCount; + + { + LLFastTimer t(FTM_OCCLUSION_BEGIN_QUERY); + glBeginQueryARB(mode, mOcclusionQuery[LLViewerCamera::sCurCameraID]); + } + + LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr; + llassert(shader); + + shader->uniform3fv(LLShaderMgr::BOX_CENTER, 1, mBounds[0].getF32ptr()); + shader->uniform3f(LLShaderMgr::BOX_SIZE, mBounds[1][0]+SG_OCCLUSION_FUDGE, + mBounds[1][1]+SG_OCCLUSION_FUDGE, + mBounds[1][2]+SG_OCCLUSION_FUDGE); + + if (!use_depth_clamp && mSpatialPartition->mDrawableType == LLDrawPool::POOL_VOIDWATER) + { + LLFastTimer t(FTM_OCCLUSION_DRAW_WATER); + + LLGLSquashToFarClip squash(glh_get_current_projection(), 1); + if (camera->getOrigin().isExactlyZero()) + { //origin is invalid, draw entire box + gPipeline.mCubeVB->drawRange(LLRender::TRIANGLE_FAN, 0, 7, 8, 0); + gPipeline.mCubeVB->drawRange(LLRender::TRIANGLE_FAN, 0, 7, 8, b111*8); + } + else + { + gPipeline.mCubeVB->drawRange(LLRender::TRIANGLE_FAN, 0, 7, 8, get_box_fan_indices(camera, mBounds[0])); + } + } + else + { + LLFastTimer t(FTM_OCCLUSION_DRAW); + if (camera->getOrigin().isExactlyZero()) + { //origin is invalid, draw entire box + gPipeline.mCubeVB->drawRange(LLRender::TRIANGLE_FAN, 0, 7, 8, 0); + gPipeline.mCubeVB->drawRange(LLRender::TRIANGLE_FAN, 0, 7, 8, b111*8); + } + else + { + gPipeline.mCubeVB->drawRange(LLRender::TRIANGLE_FAN, 0, 7, 8, get_box_fan_indices(camera, mBounds[0])); + } + } + + + { + LLFastTimer t(FTM_OCCLUSION_END_QUERY); + glEndQueryARB(mode); + } + } + } + + { + LLFastTimer t(FTM_SET_OCCLUSION_STATE); + setOcclusionState(LLOcclusionCullingGroup::QUERY_PENDING); + clearOcclusionState(LLOcclusionCullingGroup::DISCARD_QUERY); + } + } + } + } +} +//------------------------------------------------------------------------------------------- +//end of occulsion culling functions and classes +//------------------------------------------------------------------------------------------- + //----------------------------------------------------------------------------------- //class LLViewerOctreePartition definitions //----------------------------------------------------------------------------------- -LLViewerOctreePartition::LLViewerOctreePartition() : mRegionp(NULL) +LLViewerOctreePartition::LLViewerOctreePartition() : + mRegionp(NULL), + mOcclusionEnabled(TRUE), + mDrawableType(0), + mLODSeed(0), + mLODPeriod(1) { LLVector4a center, size; center.splat(0.f); @@ -647,6 +1260,11 @@ LLViewerOctreePartition::~LLViewerOctreePartition() mOctree = NULL; } +BOOL LLViewerOctreePartition::isOcclusionEnabled() +{ + return mOcclusionEnabled || LLPipeline::sUseOcclusion > 2; +} + //----------------------------------------------------------------------------------- //class LLViewerOctreeCull definitions //----------------------------------------------------------------------------------- |