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-rw-r--r--indra/newview/llheroprobemanager.cpp568
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diff --git a/indra/newview/llheroprobemanager.cpp b/indra/newview/llheroprobemanager.cpp
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+/**
+ * @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::sReflectionProbesEnabled || 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_RGB16F;
+ U32 targetRes = mProbeResolution * 4; // 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_RGB16F);
+ res /= 2;
+ }
+ }
+
+ llassert(mProbes[0] == mDefaultProbe);
+
+ LLVector4a probe_pos;
+ LLVector3 camera_pos = LLViewerCamera::instance().mOrigin;
+ if (mHeroVOList.size() > 0)
+ {
+ {
+ if (mNearestHero != nullptr && mNearestHero->mDrawable.notNull())
+ {
+ LLVector3 hero_pos = mNearestHero->mDrawable->mXform.getWorldPosition();
+
+ LLVector4a hit_pos;
+ LLVector3 focus_point;
+ LLQuaternion camera_rot;
+ F32 angleInRadians = 180 * DEG_TO_RAD;
+
+ LLMatrix4 rotationMatrix;
+
+ LLVector3 translatedPoint;
+ LLVector3 rotatedTranslatedPoint;
+ LLVector3 rotatedPoint;
+
+ switch (mNearestHero->mirrorPlacementMode()) {
+ case 0:
+
+ hero_pos.mV[1] = camera_pos.mV[1];
+
+ rotationMatrix.rotate(angleInRadians, LLVector4(1, 0, 0, 0));
+
+ translatedPoint = camera_pos - hero_pos;
+ rotatedTranslatedPoint = translatedPoint * rotationMatrix;
+ rotatedPoint = rotatedTranslatedPoint + hero_pos;
+
+ probe_pos.load3(rotatedPoint.mV);
+ break;
+ case 1:
+
+ hero_pos.mV[2] = camera_pos.mV[2];
+
+ rotationMatrix.rotate(angleInRadians, LLVector4(0, 1, 0, 0));
+
+ translatedPoint = camera_pos - hero_pos;
+ rotatedTranslatedPoint = translatedPoint * rotationMatrix;
+ rotatedPoint = rotatedTranslatedPoint + hero_pos;
+
+ probe_pos.load3(rotatedPoint.mV);
+ break;
+ case 2:
+
+ hero_pos.mV[0] = camera_pos.mV[0];
+
+ rotationMatrix.rotate(angleInRadians, LLVector4(0, 0, 1, 0));
+
+ translatedPoint = camera_pos - hero_pos;
+ rotatedTranslatedPoint = translatedPoint * rotationMatrix;
+ rotatedPoint = rotatedTranslatedPoint + hero_pos;
+
+ probe_pos.load3(rotatedPoint.mV);
+ break;
+ }
+ }
+
+ 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;
+
+ for (U32 j = 0; j < mProbes.size(); j++)
+ {
+ for (U32 i = 0; i < 6; ++i)
+ {
+ updateProbeFace(mProbes[j], i);
+ }
+ }
+
+ gPipeline.mReflectionMapManager.mRadiancePass = radiance_pass;
+ }
+}
+
+// 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)
+{
+ // hacky hot-swap of camera specific render targets
+ gPipeline.mRT = &gPipeline.mAuxillaryRT;
+
+ probe->update(mRenderTarget.getWidth(), face, true);
+
+ 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.mAuxillaryRT.screen;
+
+ // 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();
+ }
+
+
+ S32 mips = log2((F32)mProbeResolution) + 0.5f;
+
+ gReflectionMipProgram.bind();
+ S32 diffuseChannel = gReflectionMipProgram.enableTexture(LLShaderMgr::DEFERRED_DIFFUSE, 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]));
+ }
+
+
+ gReflectionMipProgram.uniform1f(resScale, 1.f/(mProbeResolution*2));
+
+ 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();
+ }
+
+ if (face == 5)
+ {
+ 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)
+ gRadianceGenProgram.bind();
+ mVertexBuffer->setBuffer();
+
+ S32 channel = gRadianceGenProgram.enableTexture(LLShaderMgr::REFLECTION_PROBES, LLTexUnit::TT_CUBE_MAP_ARRAY);
+ mTexture->bind(channel);
+ gRadianceGenProgram.uniform1i(sSourceIdx, sourceIdx);
+ gRadianceGenProgram.uniform1f(LLShaderMgr::REFLECTION_PROBE_MAX_LOD, mMaxProbeLOD);
+ gRadianceGenProgram.uniform1f(LLShaderMgr::REFLECTION_PROBE_STRENGTH, mHeroProbeStrength);
+
+ U32 res = mMipChain[0].getWidth();
+
+ for (int i = 0; i < mMipChain.size(); ++i)
+ {
+ LL_PROFILE_GPU_ZONE("probe radiance gen");
+ static LLStaticHashedString sMipLevel("mipLevel");
+ static LLStaticHashedString sRoughness("roughness");
+ static LLStaticHashedString sWidth("u_width");
+
+ gRadianceGenProgram.uniform1f(sRoughness, (F32)i / (F32)(mMipChain.size() - 1));
+ gRadianceGenProgram.uniform1f(sMipLevel, i);
+ gRadianceGenProgram.uniform1i(sWidth, mProbeResolution);
+
+ 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);
+ }
+ }
+
+ gRadianceGenProgram.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);
+ }
+
+#if 0
+ if (!gCubeSnapshot)
+ {
+ for (auto& probe : mProbes)
+ {
+ LLViewerObject* vobj = probe->mViewerObject;
+ if (vobj)
+ {
+ F32 time = (F32)gFrameTimeSeconds - probe->mLastUpdateTime;
+ vobj->setDebugText(llformat("%d/%d/%d/%.1f - %.1f/%.1f", probe->mCubeIndex, probe->mProbeIndex, (U32) probe->mNeighbors.size(), probe->mMinDepth, probe->mMaxDepth, time), time > 1.f ? LLColor4::white : LLColor4::green);
+ }
+ }
+ }
+#endif
+}
+
+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 = nhpo2(1024);
+ 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 = 12.f;
+ 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);
+ }
+ }
+}
+
+void LLHeroProbeManager::registerHeroDrawable(LLVOVolume* drawablep)
+{
+ mNearestHero = drawablep;
+ if (mHeroVOList.find(drawablep) == mHeroVOList.end())
+ {
+ mHeroVOList.insert(drawablep);
+ LL_INFOS() << "Mirror drawable registered." << LL_ENDL;
+ }
+}
+
+void LLHeroProbeManager::unregisterHeroDrawable(LLVOVolume* drawablep)
+{
+ if (mHeroVOList.find(drawablep) != mHeroVOList.end())
+ {
+ mHeroVOList.erase(drawablep);
+ }
+}
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