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-rw-r--r--indra/llwindow/llwindowmacosx.cpp10
1 files changed, 10 insertions, 0 deletions
diff --git a/indra/llwindow/llwindowmacosx.cpp b/indra/llwindow/llwindowmacosx.cpp
index 2c841d4703..8bfaeca614 100644
--- a/indra/llwindow/llwindowmacosx.cpp
+++ b/indra/llwindow/llwindowmacosx.cpp
@@ -1225,6 +1225,16 @@ F32 LLWindowMacOSX::getPixelAspectRatio()
return 1.f;
}
+U32 LLWindowMacOSX::getAvailableVRAMMegabytes() {
+ // MTL (and MoltenVK) has some additional gpu data, such as recommendedMaxWorkingSetSize and currentAllocatedSize.
+ // But these are not available for OpenGL and/or our current mimimum OS version.
+ // So we will estimate.
+ static const U32 mb = 1024*1024;
+ // We're asked for total available gpu memory, but we only have allocation info on texture usage. So estimate by doubling that.
+ static const U32 total_factor = 2; // estimated total/textures
+ return gGLManager.mVRAM - (LLImageGL::getTextureBytesAllocated() * total_factor/mb);
+}
+
//static SInt32 oldWindowLevel;
// MBW -- XXX -- There's got to be a better way than this. Find it, please...