1836 dont store texture in system memory unless absolutely necessary (#1843)

* #1836 Texture memory usage overhaul.  Much decrufting
- don't keep a copy of textures in system memory
- use GPU to downrez textures instead of reloading from cache
- use GPU to generate brightness/darkness bumpmaps

1 files changed, 10 insertions, 0 deletions

diff --git a/indra/newview/gltf/buffer_util.h b/indra/newview/gltf/buffer_util.h
index 40f9448aaf..89cedf4a47 100644
--- a/indra/newview/gltf/buffer_util.h
+++ b/indra/newview/gltf/buffer_util.h
@@ -181,6 +181,16 @@ namespace LL
         }
 
         template<>
+        inline void copyVec4<U8, U64>(U8* src, U64& dst)
+        {
+            U8* data = (U8*)&dst;
+            data[0] = src[0];
+            data[1] = src[1];
+            data[2] = src[2];
+            data[3] = src[3];
+        }
+
+        template<>
         inline void copyVec4<U16, LLColor4U>(U16* src, LLColor4U& dst)
         {
             dst.set(src[0], src[1], src[2], src[3]);