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Diffstat (limited to 'indra/newview/llheroprobemanager.cpp')
| -rw-r--r-- | indra/newview/llheroprobemanager.cpp | 600 |
1 files changed, 600 insertions, 0 deletions
diff --git a/indra/newview/llheroprobemanager.cpp b/indra/newview/llheroprobemanager.cpp new file mode 100644 index 0000000000..a00b6d6b5d --- /dev/null +++ b/indra/newview/llheroprobemanager.cpp @@ -0,0 +1,600 @@ +/** + * @file LLHeroProbeManager.cpp + * @brief LLHeroProbeManager class implementation + * + * $LicenseInfo:firstyear=2022&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2022, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +#include "llviewerprecompiledheaders.h" + +#include "llheroprobemanager.h" +#include "llreflectionmapmanager.h" +#include "llviewercamera.h" +#include "llspatialpartition.h" +#include "llviewerregion.h" +#include "pipeline.h" +#include "llviewershadermgr.h" +#include "llviewercontrol.h" +#include "llenvironment.h" +#include "llstartup.h" +#include "llagent.h" +#include "llagentcamera.h" +#include "llviewerwindow.h" +#include "llviewerjoystick.h" +#include "llviewermediafocus.h" + +extern BOOL gCubeSnapshot; +extern BOOL gTeleportDisplay; + +// get the next highest power of two of v (or v if v is already a power of two) +//defined in llvertexbuffer.cpp +extern U32 nhpo2(U32 v); + +static void touch_default_probe(LLReflectionMap* probe) +{ + if (LLViewerCamera::getInstance()) + { + LLVector3 origin = LLViewerCamera::getInstance()->getOrigin(); + origin.mV[2] += 64.f; + + probe->mOrigin.load3(origin.mV); + } +} + +LLHeroProbeManager::LLHeroProbeManager() +{ +} + +// helper class to seed octree with probes +void LLHeroProbeManager::update() +{ + if (!LLPipeline::RenderMirrors || gTeleportDisplay || LLStartUp::getStartupState() < STATE_PRECACHE) + { + return; + } + + LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY; + llassert(!gCubeSnapshot); // assert a snapshot is not in progress + if (LLAppViewer::instance()->logoutRequestSent()) + { + return; + } + + initReflectionMaps(); + + if (!mRenderTarget.isComplete()) + { + U32 color_fmt = GL_RGBA16F; + U32 targetRes = mProbeResolution; // super sample + mRenderTarget.allocate(targetRes, targetRes, color_fmt, true); + } + + if (mMipChain.empty()) + { + U32 res = mProbeResolution; + U32 count = log2((F32)res) + 0.5f; + + mMipChain.resize(count); + for (int i = 0; i < count; ++i) + { + mMipChain[i].allocate(res, res, GL_RGBA16F); + res /= 2; + } + } + + llassert(mProbes[0] == mDefaultProbe); + + LLVector4a probe_pos; + LLVector3 camera_pos = LLViewerCamera::instance().mOrigin; + F32 near_clip = 0.1f; + if (mHeroVOList.size() > 0) + { + // Find our nearest hero candidate. + + float last_distance = 99999.f; + + for (auto vo : mHeroVOList) + { + if (vo && !vo->isDead() && vo->mDrawable.notNull()) + { + float distance = (LLViewerCamera::instance().getOrigin() - vo->getPositionAgent()).magVec(); + if (distance < last_distance) + { + mNearestHero = vo; + last_distance = distance; + } + } + else + { + unregisterViewerObject(vo); + } + } + + if (mNearestHero != nullptr && !mNearestHero->isDead() && mNearestHero->mDrawable.notNull()) + { + LLVector3 hero_pos = mNearestHero->getPositionAgent(); + LLVector3 face_normal = LLVector3(0, 0, 1); + + face_normal *= mNearestHero->mDrawable->getWorldRotation(); + face_normal.normalize(); + + LLVector3 offset = camera_pos - hero_pos; + LLVector3 project = face_normal * (offset * face_normal); + LLVector3 reject = offset - project; + LLVector3 point = (reject - project) + hero_pos; + + mCurrentClipPlane.setVec(hero_pos, face_normal); + mMirrorPosition = hero_pos; + mMirrorNormal = face_normal; + + + probe_pos.load3(point.mV); + + // Collect the list of faces that need updating based upon the camera's rotation. + LLVector3 cam_direction = LLVector3(0, 0, 1) * LLViewerCamera::instance().getQuaternion(); + + static LLVector3 cubeFaces[6] = { + LLVector3(1, 0, 0), + LLVector3(-1, 0, 0), + LLVector3(0, 1, 0), + LLVector3(0, -1, 0), + LLVector3(0, 0, 1), + LLVector3(0, 0, -1) + }; + + for (int i = 0; i < 6; i++) + { + float shouldUpdate = cam_direction * cubeFaces[i] * 0.5 + 0.5; + + int updateRate = ceilf((1 - shouldUpdate) * gPipeline.RenderHeroProbeConservativeUpdateMultiplier); + + // Chances are this is a face that's non-visible to the camera when it's being reflected. + // Set it to 0. It will be skipped below. + if (updateRate == gPipeline.RenderHeroProbeConservativeUpdateMultiplier) + updateRate = 0; + + mFaceUpdateList[i] = updateRate; + } + } + else + { + mNearestHero = nullptr; + } + + mHeroProbeStrength = 1; + } + else + { + probe_pos.load3(camera_pos.mV); + } + + + static LLCachedControl<S32> sDetail(gSavedSettings, "RenderHeroReflectionProbeDetail", -1); + static LLCachedControl<S32> sLevel(gSavedSettings, "RenderHeroReflectionProbeLevel", 3); + + { + LL_PROFILE_ZONE_NAMED_CATEGORY_DISPLAY("hpmu - realtime"); + // Probe 0 is always our mirror probe. + mProbes[0]->mOrigin = probe_pos; + + bool radiance_pass = gPipeline.mReflectionMapManager.isRadiancePass(); + + gPipeline.mReflectionMapManager.mRadiancePass = true; + mRenderingMirror = true; + for (U32 j = 0; j < mProbes.size(); j++) + { + for (U32 i = 0; i < 6; ++i) + { + if (mFaceUpdateList[i] > 0 && mCurrentProbeUpdateFrame % mFaceUpdateList[i] == 0) + { + updateProbeFace(mProbes[j], i, near_clip); + mCurrentProbeUpdateFrame = 0; + } + } + generateRadiance(mProbes[j]); + } + mRenderingMirror = false; + + gPipeline.mReflectionMapManager.mRadiancePass = radiance_pass; + } + + mCurrentProbeUpdateFrame++; +} + +// Do the reflection map update render passes. +// For every 12 calls of this function, one complete reflection probe radiance map and irradiance map is generated +// First six passes render the scene with direct lighting only into a scratch space cube map at the end of the cube map array and generate +// a simple mip chain (not convolution filter). +// At the end of these passes, an irradiance map is generated for this probe and placed into the irradiance cube map array at the index for this probe +// The next six passes render the scene with both radiance and irradiance into the same scratch space cube map and generate a simple mip chain. +// At the end of these passes, a radiance map is generated for this probe and placed into the radiance cube map array at the index for this probe. +// In effect this simulates single-bounce lighting. +void LLHeroProbeManager::updateProbeFace(LLReflectionMap* probe, U32 face, F32 near_clip) +{ + // hacky hot-swap of camera specific render targets + gPipeline.mRT = &gPipeline.mHeroProbeRT; + + probe->update(mRenderTarget.getWidth(), face, true, near_clip); + + gPipeline.mRT = &gPipeline.mMainRT; + + S32 sourceIdx = mReflectionProbeCount; + + + // Unlike the reflectionmap manager, all probes are considered "realtime" for hero probes. + sourceIdx += 1; + + gGL.setColorMask(true, true); + LLGLDepthTest depth(GL_FALSE, GL_FALSE); + LLGLDisable cull(GL_CULL_FACE); + LLGLDisable blend(GL_BLEND); + + // downsample to placeholder map + { + gGL.matrixMode(gGL.MM_MODELVIEW); + gGL.pushMatrix(); + gGL.loadIdentity(); + + gGL.matrixMode(gGL.MM_PROJECTION); + gGL.pushMatrix(); + gGL.loadIdentity(); + + gGL.flush(); + U32 res = mProbeResolution * 2; + + static LLStaticHashedString resScale("resScale"); + static LLStaticHashedString direction("direction"); + static LLStaticHashedString znear("znear"); + static LLStaticHashedString zfar("zfar"); + + LLRenderTarget *screen_rt = &gPipeline.mHeroProbeRT.screen; + LLRenderTarget *depth_rt = &gPipeline.mHeroProbeRT.deferredScreen; + + // perform a gaussian blur on the super sampled render before downsampling + { + gGaussianProgram.bind(); + gGaussianProgram.uniform1f(resScale, 1.f / (mProbeResolution * 2)); + S32 diffuseChannel = gGaussianProgram.enableTexture(LLShaderMgr::DEFERRED_DIFFUSE, LLTexUnit::TT_TEXTURE); + + // horizontal + gGaussianProgram.uniform2f(direction, 1.f, 0.f); + gGL.getTexUnit(diffuseChannel)->bind(screen_rt); + mRenderTarget.bindTarget(); + gPipeline.mScreenTriangleVB->setBuffer(); + gPipeline.mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3); + mRenderTarget.flush(); + + // vertical + gGaussianProgram.uniform2f(direction, 0.f, 1.f); + gGL.getTexUnit(diffuseChannel)->bind(&mRenderTarget); + screen_rt->bindTarget(); + gPipeline.mScreenTriangleVB->setBuffer(); + gPipeline.mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3); + screen_rt->flush(); + gGaussianProgram.unbind(); + } + + S32 mips = log2((F32)mProbeResolution) + 0.5f; + + gReflectionMipProgram.bind(); + S32 diffuseChannel = gReflectionMipProgram.enableTexture(LLShaderMgr::DEFERRED_DIFFUSE, LLTexUnit::TT_TEXTURE); + S32 depthChannel = gReflectionMipProgram.enableTexture(LLShaderMgr::DEFERRED_DEPTH, LLTexUnit::TT_TEXTURE); + + for (int i = 0; i < mMipChain.size(); ++i) + { + LL_PROFILE_GPU_ZONE("probe mip"); + mMipChain[i].bindTarget(); + if (i == 0) + { + gGL.getTexUnit(diffuseChannel)->bind(screen_rt); + } + else + { + gGL.getTexUnit(diffuseChannel)->bind(&(mMipChain[i - 1])); + } + + gGL.getTexUnit(depthChannel)->bind(depth_rt, true); + + gReflectionMipProgram.uniform1f(resScale, 1.f / (mProbeResolution * 2)); + gReflectionMipProgram.uniform1f(znear, probe->getNearClip()); + gReflectionMipProgram.uniform1f(zfar, MAX_FAR_CLIP); + + gPipeline.mScreenTriangleVB->setBuffer(); + gPipeline.mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3); + + res /= 2; + + S32 mip = i - (mMipChain.size() - mips); + + if (mip >= 0) + { + LL_PROFILE_GPU_ZONE("probe mip copy"); + mTexture->bind(0); + + glCopyTexSubImage3D(GL_TEXTURE_CUBE_MAP_ARRAY, mip, 0, 0, sourceIdx * 6 + face, 0, 0, res, res); + + mTexture->unbind(); + } + mMipChain[i].flush(); + } + + gGL.popMatrix(); + gGL.matrixMode(gGL.MM_MODELVIEW); + gGL.popMatrix(); + + gGL.getTexUnit(diffuseChannel)->unbind(LLTexUnit::TT_TEXTURE); + gReflectionMipProgram.unbind(); + } +} + +// Separate out radiance generation as a separate stage. +// This is to better enable independent control over how we generate radiance vs. having it coupled with processing the final face of the probe. +// Useful when we may not always be rendering a full set of faces of the probe. +void LLHeroProbeManager::generateRadiance(LLReflectionMap* probe) +{ + S32 sourceIdx = mReflectionProbeCount; + + // Unlike the reflectionmap manager, all probes are considered "realtime" for hero probes. + sourceIdx += 1; + { + mMipChain[0].bindTarget(); + static LLStaticHashedString sSourceIdx("sourceIdx"); + + { + + + // generate radiance map (even if this is not the irradiance map, we need the mip chain for the irradiance map) + gHeroRadianceGenProgram.bind(); + mVertexBuffer->setBuffer(); + + S32 channel = gHeroRadianceGenProgram.enableTexture(LLShaderMgr::REFLECTION_PROBES, LLTexUnit::TT_CUBE_MAP_ARRAY); + mTexture->bind(channel); + gHeroRadianceGenProgram.uniform1i(sSourceIdx, sourceIdx); + gHeroRadianceGenProgram.uniform1f(LLShaderMgr::REFLECTION_PROBE_MAX_LOD, mMaxProbeLOD); + gHeroRadianceGenProgram.uniform1f(LLShaderMgr::REFLECTION_PROBE_STRENGTH, mHeroProbeStrength); + + U32 res = mMipChain[0].getWidth(); + + for (int i = 0; i < mMipChain.size() / 4; ++i) + { + LL_PROFILE_GPU_ZONE("probe radiance gen"); + static LLStaticHashedString sMipLevel("mipLevel"); + static LLStaticHashedString sRoughness("roughness"); + static LLStaticHashedString sWidth("u_width"); + static LLStaticHashedString sStrength("probe_strength"); + + gHeroRadianceGenProgram.uniform1f(sRoughness, (F32) i / (F32) (mMipChain.size() - 1)); + gHeroRadianceGenProgram.uniform1f(sMipLevel, i); + gHeroRadianceGenProgram.uniform1i(sWidth, mProbeResolution); + gHeroRadianceGenProgram.uniform1f(sStrength, 1); + + for (int cf = 0; cf < 6; ++cf) + { // for each cube face + LLCoordFrame frame; + frame.lookAt(LLVector3(0, 0, 0), LLCubeMapArray::sClipToCubeLookVecs[cf], LLCubeMapArray::sClipToCubeUpVecs[cf]); + + F32 mat[16]; + frame.getOpenGLRotation(mat); + gGL.loadMatrix(mat); + + mVertexBuffer->drawArrays(gGL.TRIANGLE_STRIP, 0, 4); + + glCopyTexSubImage3D(GL_TEXTURE_CUBE_MAP_ARRAY, i, 0, 0, probe->mCubeIndex * 6 + cf, 0, 0, res, res); + } + + if (i != mMipChain.size() - 1) + { + res /= 2; + glViewport(0, 0, res, res); + } + } + + gHeroRadianceGenProgram.unbind(); + } + + mMipChain[0].flush(); + } +} + +void LLHeroProbeManager::updateUniforms() +{ + if (!LLPipeline::sReflectionProbesEnabled) + { + return; + } + + LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY; + + struct HeroProbeData + { + LLVector4 heroPosition[1]; + GLint heroProbeCount = 1; + }; + + HeroProbeData hpd; + + LLMatrix4a modelview; + modelview.loadu(gGLModelView); + LLVector4a oa; // scratch space for transformed origin + oa.set(0, 0, 0, 0); + hpd.heroProbeCount = 1; + modelview.affineTransform(mProbes[0]->mOrigin, oa); + hpd.heroPosition[0].set(oa.getF32ptr()); + + //copy rpd into uniform buffer object + if (mUBO == 0) + { + glGenBuffers(1, &mUBO); + } + + { + LL_PROFILE_ZONE_NAMED_CATEGORY_DISPLAY("rmmsu - update buffer"); + glBindBuffer(GL_UNIFORM_BUFFER, mUBO); + glBufferData(GL_UNIFORM_BUFFER, sizeof(HeroProbeData), &hpd, GL_STREAM_DRAW); + glBindBuffer(GL_UNIFORM_BUFFER, 0); + } +} + +void LLHeroProbeManager::setUniforms() +{ + if (!LLPipeline::sReflectionProbesEnabled) + { + return; + } + + if (mUBO == 0) + { + updateUniforms(); + } + glBindBufferBase(GL_UNIFORM_BUFFER, 1, mUBO); +} + +void LLHeroProbeManager::renderDebug() +{ + gDebugProgram.bind(); + + for (auto& probe : mProbes) + { + renderReflectionProbe(probe); + } + + gDebugProgram.unbind(); +} + +void LLHeroProbeManager::initReflectionMaps() +{ + U32 count = LL_MAX_HERO_PROBE_COUNT; + + if (mTexture.isNull() || mReflectionProbeCount != count || mReset) + { + mReset = false; + mReflectionProbeCount = count; + mProbeResolution = gSavedSettings.getS32("RenderHeroProbeResolution"); + mMaxProbeLOD = log2f(mProbeResolution) - 1.f; // number of mips - 1 + + mTexture = new LLCubeMapArray(); + + // store mReflectionProbeCount+2 cube maps, final two cube maps are used for render target and radiance map generation source) + mTexture->allocate(mProbeResolution, 3, mReflectionProbeCount + 2); + + if (mDefaultProbe.isNull()) + { + llassert(mProbes.empty()); // default probe MUST be the first probe created + mDefaultProbe = new LLReflectionMap(); + mProbes.push_back(mDefaultProbe); + } + + llassert(mProbes[0] == mDefaultProbe); + + // For hero probes, we treat this as the main mirror probe. + + mDefaultProbe->mCubeIndex = 0; + mDefaultProbe->mCubeArray = mTexture; + mDefaultProbe->mDistance = gSavedSettings.getF32("RenderHeroProbeDistance"); + mDefaultProbe->mRadius = 4096.f; + mDefaultProbe->mProbeIndex = 0; + touch_default_probe(mDefaultProbe); + + mProbes.push_back(mDefaultProbe); + } + + if (mVertexBuffer.isNull()) + { + U32 mask = LLVertexBuffer::MAP_VERTEX; + LLPointer<LLVertexBuffer> buff = new LLVertexBuffer(mask); + buff->allocateBuffer(4, 0); + + LLStrider<LLVector3> v; + + buff->getVertexStrider(v); + + v[0] = LLVector3(-1, -1, -1); + v[1] = LLVector3(1, -1, -1); + v[2] = LLVector3(-1, 1, -1); + v[3] = LLVector3(1, 1, -1); + + buff->unmapBuffer(); + + mVertexBuffer = buff; + } +} + +void LLHeroProbeManager::cleanup() +{ + mVertexBuffer = nullptr; + mRenderTarget.release(); + mHeroRenderTarget.release(); + + mMipChain.clear(); + + mTexture = nullptr; + + mProbes.clear(); + + mReflectionMaps.clear(); + + mDefaultProbe = nullptr; + mUpdatingProbe = nullptr; + + glDeleteBuffers(1, &mUBO); + mUBO = 0; + + mHeroVOList.clear(); + mNearestHero = nullptr; +} + +void LLHeroProbeManager::doOcclusion() +{ + LLVector4a eye; + eye.load3(LLViewerCamera::instance().getOrigin().mV); + + for (auto& probe : mProbes) + { + if (probe != nullptr && probe != mDefaultProbe) + { + probe->doOcclusion(eye); + } + } +} + +bool LLHeroProbeManager::registerViewerObject(LLVOVolume* drawablep) +{ + llassert(drawablep != nullptr); + + if (std::find(mHeroVOList.begin(), mHeroVOList.end(), drawablep) == mHeroVOList.end()) + { + // Probe isn't in our list for consideration. Add it. + mHeroVOList.push_back(drawablep); + return true; + } + + return false; +} + +void LLHeroProbeManager::unregisterViewerObject(LLVOVolume* drawablep) +{ + std::vector<LLVOVolume*>::iterator found_itr = std::find(mHeroVOList.begin(), mHeroVOList.end(), drawablep); + if (found_itr != mHeroVOList.end()) + { + mHeroVOList.erase(found_itr); + } +} |