Merge remote-tracking branch 'secondlife/release/2024.08-DeltaFPS' into 2024.08-DeltaFPS

17 files changed, 124 insertions, 56 deletions

diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 2a7cc3d141..2f2c58ce73 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -1047,6 +1047,7 @@ void LLGLManager::initWGL()
         GLH_EXT_NAME(wglGetGPUIDsAMD) = (PFNWGLGETGPUIDSAMDPROC)GLH_EXT_GET_PROC_ADDRESS("wglGetGPUIDsAMD");
         GLH_EXT_NAME(wglGetGPUInfoAMD) = (PFNWGLGETGPUINFOAMDPROC)GLH_EXT_GET_PROC_ADDRESS("wglGetGPUInfoAMD");
     }
+    mHasNVXGpuMemoryInfo = ExtensionExists("GL_NVX_gpu_memory_info", gGLHExts.mSysExts);
 
     if (ExtensionExists("WGL_EXT_swap_control", gGLHExts.mSysExts))
     {
@@ -1221,6 +1222,17 @@ bool LLGLManager::initGL()
             LL_WARNS("RenderInit") << "VRAM Detected (AMDAssociations):" << mVRAM << LL_ENDL;
         }
     }
+    else if (mHasNVXGpuMemoryInfo)
+    {
+        GLint mem_kb = 0;
+        glGetIntegerv(GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &mem_kb);
+        mVRAM = mem_kb / 1024;
+
+        if (mVRAM != 0)
+        {
+            LL_WARNS("RenderInit") << "VRAM Detected (NVXGpuMemoryInfo):" << mVRAM << LL_ENDL;
+        }
+    }
 #endif
 
 #if LL_WINDOWS
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 440a7d37c4..506baec03d 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -97,6 +97,7 @@ public:
 
     // Vendor-specific extensions
     bool mHasAMDAssociations = false;
+    bool mHasNVXGpuMemoryInfo = false;
 
     bool mIsAMD;
     bool mIsNVIDIA;
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 7f0e890957..9dc2644650 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -4627,6 +4627,12 @@ void LLWindowWin32::LLWindowWin32Thread::checkDXMem()
 {
     if (!mGLReady || mGotGLBuffer) { return; }
 
+    if ((gGLManager.mHasAMDAssociations || gGLManager.mHasNVXGpuMemoryInfo) && gGLManager.mVRAM != 0)
+    { // OpenGL already told us the memory budget, don't ask DX
+        mGotGLBuffer = true;
+        return;
+    }
+
     IDXGIFactory4* p_factory = nullptr;
 
     HRESULT res = CreateDXGIFactory1(__uuidof(IDXGIFactory4), (void**)&p_factory);
@@ -4723,7 +4729,7 @@ void LLWindowWin32::LLWindowWin32Thread::run()
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_WIN32;
 
-        // Check memory budget using DirectX
+        // Check memory budget using DirectX if OpenGL doesn't have the means to tell us
         checkDXMem();
 
         if (mWindowHandleThrd != 0)
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 8b5e92f704..bd49f003c5 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -7227,6 +7227,17 @@
         <key>Value</key>
         <integer>1</integer>
     </map>
+    <key>RenderCanUseTerrainBakeShaders</key>
+    <map>
+        <key>Comment</key>
+        <string>Hardware has support for Terrain Bake shaders</string>
+        <key>Persist</key>
+        <integer>0</integer>
+        <key>Type</key>
+        <string>Boolean</string>
+        <key>Value</key>
+        <integer>1</integer>
+    </map>
   <key>RenderClass1MemoryBandwidth</key>
   <map>
     <key>Comment</key>
@@ -9435,7 +9446,7 @@
       <key>Comment</key>
       <string>EXPERIMENTAL: Enable PBR Terrain texture transforms.</string>
       <key>Persist</key>
-      <integer>1</integer>
+      <integer>0</integer>
       <key>Type</key>
       <string>Boolean</string>
       <key>Value</key>
diff --git a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
index 5193a46ac2..8588a93648 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
@@ -99,10 +99,13 @@ void calcHalfVectors(vec3 lv, vec3 n, vec3 v,
 {
     l  = normalize(lv);
     h  = normalize(l + v);
-    nh = clamp(dot(n, h), 0.0, 1.0);
-    nl = clamp(dot(n, l), 0.0, 1.0);
-    nv = clamp(dot(n, v), 0.0, 1.0);
-    vh = clamp(dot(v, h), 0.0, 1.0);
+
+    // lower bound to avoid divide by zero
+    float eps = 0.000001;
+    nh = clamp(dot(n, h), eps, 1.0);
+    nl = clamp(dot(n, l), eps, 1.0);
+    nv = clamp(dot(n, v), eps, 1.0);
+    vh = clamp(dot(v, h), eps, 1.0);
 
     lightDist = length(lv);
 }
diff --git a/indra/newview/featuretable.txt b/indra/newview/featuretable.txt
index 213f0ab845..131d995339 100644
--- a/indra/newview/featuretable.txt
+++ b/indra/newview/featuretable.txt
@@ -1,4 +1,4 @@
-version 62
+version 63
 // The version number above should be incremented IF AND ONLY IF some
 // change has been made that is sufficiently important to justify
 // resetting the graphics preferences of all users to the recommended
@@ -200,7 +200,7 @@ RenderFlexTimeFactor		1	1.0
 RenderGlowResolutionPow		1	9
 RenderMaxPartCount			1	4096
 RenderLocalLightCount		1	1024
-RenderTransparentWater      1   1
+RenderTransparentWater      1   0
 RenderTerrainDetail			1	1
 RenderTerrainLODFactor		1	2.0
 RenderTerrainPBRDetail      1   0
diff --git a/indra/newview/featuretable_mac.txt b/indra/newview/featuretable_mac.txt
index 2f7f60a05e..43d0f7cd7d 100644
--- a/indra/newview/featuretable_mac.txt
+++ b/indra/newview/featuretable_mac.txt
@@ -1,4 +1,4 @@
-version 59
+version 60
 // The version number above should be incremented IF AND ONLY IF some
 // change has been made that is sufficiently important to justify
 // resetting the graphics preferences of all users to the recommended
@@ -133,7 +133,7 @@ RenderTerrainDetail			1	1
 RenderTerrainLODFactor		1	1.0
 RenderTerrainPBRDetail      1   -1
 RenderTerrainPBRPlanarSampleCount 1   1
-RenderTransparentWater		1	1
+RenderTransparentWater		1	0
 RenderTreeLODFactor			1	0.5
 RenderVolumeLODFactor		1	1.125
 RenderDeferredSSAO			1	0
@@ -168,7 +168,7 @@ RenderTerrainDetail			1	1
 RenderTerrainLODFactor		1	2.0
 RenderTerrainPBRDetail      1   0
 RenderTerrainPBRPlanarSampleCount 1   1
-RenderTransparentWater		1	1
+RenderTransparentWater		1	0
 RenderTreeLODFactor			1	0.5
 RenderVolumeLODFactor		1	1.25
 RenderDeferredSSAO			1	0
@@ -203,7 +203,7 @@ RenderTerrainDetail			1	1
 RenderTerrainLODFactor		1	2.0
 RenderTerrainPBRDetail      1   0
 RenderTerrainPBRPlanarSampleCount 1   1
-RenderTransparentWater		1	1
+RenderTransparentWater		1	0
 RenderTreeLODFactor			1	0.5
 RenderVolumeLODFactor		1	1.375
 RenderDeferredSSAO			1	0
diff --git a/indra/newview/llfloaterregioninfo.cpp b/indra/newview/llfloaterregioninfo.cpp
index e90e8ae48a..2fdde670fc 100644
--- a/indra/newview/llfloaterregioninfo.cpp
+++ b/indra/newview/llfloaterregioninfo.cpp
@@ -268,7 +268,7 @@ bool LLFloaterRegionInfo::postBuild()
     mInfoPanels.push_back(panel);
     static LLCachedControl<bool> feature_pbr_terrain_enabled(gSavedSettings, "RenderTerrainPBREnabled", false);
     static LLCachedControl<bool> feature_pbr_terrain_transforms_enabled(gSavedSettings, "RenderTerrainPBRTransformsEnabled", false);
-    if (!feature_pbr_terrain_transforms_enabled || !feature_pbr_terrain_enabled)
+    if (!feature_pbr_terrain_transforms_enabled() || !feature_pbr_terrain_enabled())
     {
         panel->buildFromFile("panel_region_terrain.xml");
     }
@@ -1694,7 +1694,7 @@ bool LLPanelRegionTerrainInfo::refreshFromRegion(LLViewerRegion* region)
         static LLCachedControl<bool> feature_pbr_terrain_enabled(gSavedSettings, "RenderTerrainPBREnabled", false);
 
         const bool textures_ready = compp->makeTexturesReady(false, false);
-        const bool materials_ready = feature_pbr_terrain_enabled && compp->makeMaterialsReady(false, false);
+        const bool materials_ready = feature_pbr_terrain_enabled() && compp->makeMaterialsReady(false, false);
 
         bool set_texture_swatches;
         bool set_material_swatches;
@@ -1724,7 +1724,7 @@ bool LLPanelRegionTerrainInfo::refreshFromRegion(LLViewerRegion* region)
         {
             material_type_to_ctrl(mMaterialTypeCtrl, material_type);
             updateForMaterialType();
-            mMaterialTypeCtrl->setVisible(feature_pbr_terrain_enabled);
+            mMaterialTypeCtrl->setVisible(feature_pbr_terrain_enabled());
         }
 
         if (set_texture_swatches)
@@ -1938,7 +1938,7 @@ bool LLPanelRegionTerrainInfo::sendUpdate()
     // POST to ModifyRegion endpoint, if enabled
 
     static LLCachedControl<bool> feature_pbr_terrain_transforms_enabled(gSavedSettings, "RenderTerrainPBRTransformsEnabled", false);
-    if (material_type == LLTerrainMaterials::Type::PBR && feature_pbr_terrain_transforms_enabled)
+    if (material_type == LLTerrainMaterials::Type::PBR && feature_pbr_terrain_transforms_enabled())
     {
         LLTerrainMaterials composition;
         for (S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
diff --git a/indra/newview/llglsandbox.cpp b/indra/newview/llglsandbox.cpp
index 19cb4d04e2..930a8c28d9 100644
--- a/indra/newview/llglsandbox.cpp
+++ b/indra/newview/llglsandbox.cpp
@@ -1075,6 +1075,9 @@ F32 gpu_benchmark()
             return -1.f;
         }
         LLImageGL::setManualImage(GL_TEXTURE_2D, 0, GL_RGBA, res,res,GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+        // disable mipmaps and use point filtering to cause cache misses
+        gGL.getTexUnit(0)->setHasMipMaps(false);
+        gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 
         if (alloc_timer.getElapsedTimeF32() > time_limit)
         {
@@ -1191,7 +1194,8 @@ F32 gpu_benchmark()
     F32 seconds = ms/1000.f;
 
     F64 samples_drawn = (F64)gBenchmarkProgram.mSamplesDrawn;
-    F32 samples_sec = (F32)((samples_drawn/1000000000.0)/seconds);
+    F64 gpixels_drawn = samples_drawn / 1000000000.0;
+    F32 samples_sec = (F32)(gpixels_drawn/seconds);
     gbps = samples_sec*4;  // 4 bytes per sample
 
     LL_INFOS("Benchmark") << "Memory bandwidth is " << llformat("%.3f", gbps) << " GB/sec according to ARB_timer_query, total time " << seconds << " seconds" << LL_ENDL;
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 9c40216ad6..5a1228768c 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -3447,6 +3447,12 @@ bool enable_gltf_upload()
     return enable_gltf_save_as();
 }
 
+bool enable_terrain_local_paintmap()
+{
+    static LLCachedControl<bool> can_use_shaders(gSavedSettings, "RenderCanUseTerrainBakeShaders", true);
+    return can_use_shaders;
+}
+
 class LLSelfRemoveAllAttachments : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
@@ -10238,6 +10244,7 @@ void initialize_menus()
     enable.add("EnableGLTF", boost::bind(&enable_gltf));
     enable.add("EnableGLTFSaveAs", boost::bind(&enable_gltf_save_as));
     enable.add("EnableGLTFUpload", boost::bind(&enable_gltf_upload));
+    enable.add("EnableTerrainLocalPaintMap", std::bind(&enable_terrain_local_paintmap));
 
     view_listener_t::addMenu(new LLFloaterVisible(), "FloaterVisible");
     view_listener_t::addMenu(new LLShowSidetrayPanel(), "ShowSidetrayPanel");
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index c98bd9b7e2..6b0fc4f5e8 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -2993,7 +2993,14 @@ bool LLViewerShaderMgr::loadShadersInterface()
         const U32 value_range = (1 << bit_depth) - 1;
         shader->addPermutation("TERRAIN_PAINT_PRECISION", llformat("%d", value_range));
         success = success && shader->createShader();
-        llassert(success);
+        //llassert(success);
+        if (!success)
+        {
+            LL_WARNS() << "Failed to create shader '" << shader->mName << "', disabling!" << LL_ENDL;
+            gSavedSettings.setBOOL("RenderCanUseTerrainBakeShaders", false);
+            // continue as if this shader never happened
+            success = true;
+        }
     }
 
     if (success)
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index b351f3e12f..fcffb96735 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -597,6 +597,9 @@ void send_viewer_stats(bool include_preferences)
         agent["run_time"] = run_time;
     }
 
+    // report time the viewer has spent in the foreground
+    agent["foreground_time"] = gForegroundTime.getElapsedTimeF32();
+
     // send fps only for time app spends in foreground
     agent["fps"] = (F32)gForegroundFrameCount / gForegroundTime.getElapsedTimeF32();
     agent["version"] = LLVersionInfo::instance().getChannelAndVersion();
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 452d6f2c04..99f8db00f2 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -511,44 +511,52 @@ void LLViewerTexture::updateClass()
 
     F32 over_pct = (used - target) / target;
 
-    bool is_low = over_pct > 0.f;
+    bool is_sys_low = isSystemMemoryLow();
+    bool is_low = is_sys_low || over_pct > 0.f;
 
-    if (isSystemMemoryLow())
+    static bool was_low = false;
+    static bool was_sys_low = false;
+
+    if (is_low && !was_low)
+    {
+        // slam to 1.5 bias the moment we hit low memory (discards off screen textures immediately)
+        sDesiredDiscardBias = llmax(sDesiredDiscardBias, 1.5f);
+
+        if (is_sys_low)
+        { // if we're low on system memory, emergency purge off screen textures to avoid a death spiral
+            LL_WARNS() << "Low system memory detected, emergency downrezzing off screen textures" << LL_ENDL;
+            for (auto& image : gTextureList)
+            {
+                gTextureList.updateImageDecodePriority(image, false /*will modify gTextureList otherwise!*/);
+            }
+        }
+    }
+
+    was_low = is_low;
+    was_sys_low = is_sys_low;
+
+    if (is_low)
     {
-        is_low = true;
-        // System RAM is low -> ramp up discard bias over time to free memory
+        // ramp up discard bias over time to free memory
         if (sEvaluationTimer.getElapsedTimeF32() > MEMORY_CHECK_WAIT_TIME)
         {
             static LLCachedControl<F32> low_mem_min_discard_increment(gSavedSettings, "RenderLowMemMinDiscardIncrement", .1f);
-            sDesiredDiscardBias += (F32) low_mem_min_discard_increment * (F32) gFrameIntervalSeconds;
+            sDesiredDiscardBias += (F32)low_mem_min_discard_increment * (F32)gFrameIntervalSeconds;
             sEvaluationTimer.reset();
         }
     }
     else
     {
-        sDesiredDiscardBias = llmax(sDesiredDiscardBias, 1.f + over_pct);
+        // don't execute above until the slam to 1.5 has a chance to take effect
+        sEvaluationTimer.reset();
 
+        // lower discard bias over time when free memory is available
         if (sDesiredDiscardBias > 1.f && over_pct < 0.f)
         {
             sDesiredDiscardBias -= gFrameIntervalSeconds * 0.01f;
         }
     }
 
-    static bool was_low = false;
-    if (is_low && !was_low)
-    {
-        LL_WARNS() << "Low system memory detected, emergency downrezzing off screen textures" << LL_ENDL;
-        sDesiredDiscardBias = llmax(sDesiredDiscardBias, 1.5f);
-
-        for (auto& image : gTextureList)
-        {
-            gTextureList.updateImageDecodePriority(image, false /*will modify gTextureList otherwise!*/);
-        }
-    }
-
-    was_low = is_low;
-
-
     // set to max discard bias if the window has been backgrounded for a while
     static bool was_backgrounded = false;
     static LLFrameTimer backgrounded_timer;
@@ -1545,6 +1553,17 @@ void LLViewerFetchedTexture::postCreateTexture()
 
     setActive();
 
+    // rebuild any volumes that are using this texture for sculpts in case their LoD has changed
+    for (U32 i = 0; i < mNumVolumes[LLRender::SCULPT_TEX]; ++i)
+    {
+        LLVOVolume* volume = mVolumeList[LLRender::SCULPT_TEX][i];
+        if (volume)
+        {
+            volume->mSculptChanged = true;
+            gPipeline.markRebuild(volume->mDrawable);
+        }
+    }
+
     if (!needsToSaveRawImage())
     {
         mNeedsAux = false;
@@ -2639,7 +2658,7 @@ void LLViewerFetchedTexture::destroyRawImage()
     if (mAuxRawImage.notNull() && !needsToSaveRawImage())
     {
         sAuxCount--;
-        mAuxRawImage = NULL;
+        mAuxRawImage = nullptr;
     }
 
     if (mRawImage.notNull())
@@ -2654,7 +2673,7 @@ void LLViewerFetchedTexture::destroyRawImage()
             }
         }
 
-        mRawImage = NULL;
+        mRawImage = nullptr;
 
         mIsRawImageValid = false;
         mRawDiscardLevel = INVALID_DISCARD_LEVEL;
@@ -2766,7 +2785,9 @@ void LLViewerFetchedTexture::readbackRawImage()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
 
-    if (mGLTexturep.notNull() && mGLTexturep->getTexName() != 0 && mRawImage.isNull())
+    // readback the raw image from vram if the current raw image is null or smaller than the texture
+    if (mGLTexturep.notNull() && mGLTexturep->getTexName() != 0 &&
+        (mRawImage.isNull() || mRawImage->getWidth() < mGLTexturep->getWidth() || mRawImage->getHeight() < mGLTexturep->getHeight() ))
     {
         mRawImage = new LLImageRaw();
         if (!mGLTexturep->readBackRaw(-1, mRawImage, false))
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index aad19a658f..38e35b3d58 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -959,7 +959,7 @@ void LLViewerTextureList::updateImageDecodePriority(LLViewerFetchedTexture* imag
       // this is an alternative to decaying mMaxVirtualSize over time
       // that keeps textures from continously downrezzing and uprezzing in the background
 
-        if (LLViewerTexture::sDesiredDiscardBias > 2.f ||
+        if (LLViewerTexture::sDesiredDiscardBias > 1.5f ||
             (!on_screen && LLViewerTexture::sDesiredDiscardBias > 1.f))
         {
             imagep->mMaxVirtualSize = 0.f;
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 89e15785c8..9b63875ffe 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -1149,7 +1149,7 @@ void LLVOVolume::updateSculptTexture()
         {
             mSculptTexture = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_SCULPTED, LLViewerTexture::LOD_TEXTURE);
             mSculptTexture->forceToSaveRawImage(0, F32_MAX);
-            mSculptTexture->addTextureStats(256.f*256.f);
+            mSculptTexture->setKnownDrawSize(256, 256);
         }
 
         mSkinInfoUnavaliable = false;
@@ -1251,7 +1251,7 @@ void LLVOVolume::sculpt()
             discard_level = mSculptTexture->getSavedRawImageLevel();
         }
 
-        if (!raw_image)
+        if (!raw_image || raw_image->getWidth() < mSculptTexture->getWidth() || raw_image->getHeight() < mSculptTexture->getHeight())
         {
             // last resort, read back from GL
             mSculptTexture->readbackRawImage();
@@ -1338,17 +1338,8 @@ void LLVOVolume::sculpt()
                 mSculptTexture->updateBindStatsForTester() ;
             }
         }
-        getVolume()->sculpt(sculpt_width, sculpt_height, sculpt_components, sculpt_data, discard_level, mSculptTexture->isMissingAsset());
 
-        //notify rebuild any other VOVolumes that reference this sculpty volume
-        for (S32 i = 0; i < mSculptTexture->getNumVolumes(LLRender::SCULPT_TEX); ++i)
-        {
-            LLVOVolume* volume = (*(mSculptTexture->getVolumeList(LLRender::SCULPT_TEX)))[i];
-            if (volume != this && volume->getVolume() == getVolume())
-            {
-                gPipeline.markRebuild(volume->mDrawable, LLDrawable::REBUILD_GEOMETRY);
-            }
-        }
+        getVolume()->sculpt(sculpt_width, sculpt_height, sculpt_components, sculpt_data, discard_level, mSculptTexture->isMissingAsset());
     }
 }
 
diff --git a/indra/newview/llvovolume.h b/indra/newview/llvovolume.h
index 6241bf42d6..97a5131260 100644
--- a/indra/newview/llvovolume.h
+++ b/indra/newview/llvovolume.h
@@ -451,6 +451,7 @@ public:
 private:
     friend class LLDrawable;
     friend class LLFace;
+    friend class LLViewerFetchedTexture;
 
     bool        mFaceMappingChanged;
     LLFrameTimer mTextureUpdateTimer;
diff --git a/indra/newview/skins/default/xui/en/menu_viewer.xml b/indra/newview/skins/default/xui/en/menu_viewer.xml
index 89d20a831e..50a8d248f8 100644
--- a/indra/newview/skins/default/xui/en/menu_viewer.xml
+++ b/indra/newview/skins/default/xui/en/menu_viewer.xml
@@ -3673,9 +3673,10 @@ function="World.EnvPreset"
             <menu_item_separator/>
 
             <menu_item_call
-              enabled="true"
               label="Create Local Paintmap"
               name="Create Local Paintmap">
+              <menu_item_call.on_enable
+               function="EnableTerrainLocalPaintMap"/>
               <menu_item_call.on_click
                function="Advanced.TerrainCreateLocalPaintMap" />
             </menu_item_call>