Add RenderTextureVRAMDivisor (#3648)

#3647 Add texture VRAM use divisor.

1 files changed, 7 insertions, 1 deletions

diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 609ad38e96..a0723db479 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -489,7 +489,12 @@ void LLViewerTexture::updateClass()
     }
 
     LLViewerMediaTexture::updateClass();
-
+    // This is a divisor used to determine how much VRAM from our overall VRAM budget to use.
+    // This is **cumulative** on whatever the detected or manually set VRAM budget is.
+    // If we detect 2048MB of VRAM, this will, by default, only use 1024.
+    // If you set 1024MB of VRAM, this will, by default, use 512.
+    // -Geenz 2025-03-03
+    static LLCachedControl<U32> tex_vram_divisor(gSavedSettings, "RenderTextureVRAMDivisor", 2);
     static LLCachedControl<U32> max_vram_budget(gSavedSettings, "RenderMaxVRAMBudget", 0);
 
     F64 texture_bytes_alloc = LLImageGL::getTextureBytesAllocated() / 1024.0 / 512.0;
@@ -500,6 +505,7 @@ void LLViewerTexture::updateClass()
     F32 used = (F32)ll_round(texture_bytes_alloc + vertex_bytes_alloc);
 
     F32 budget = max_vram_budget == 0 ? (F32)gGLManager.mVRAM : (F32)max_vram_budget;
+    budget /= tex_vram_divisor;
 
     // Try to leave at least half a GB for everyone else and for bias,
     // but keep at least 768MB for ourselves