- [GPU] Rename TextureMemoryUsage to TextureExtent (and relevant functions/etc).

- [GPU] Precalculate memory byte usage for base mip (and any additional mip levels).
- [GPU] Change TextureCache::WatchCallback so that if it's fired multiple times for the same texture it does not assert.
- [GPU] Add write watches for texture memory associated with additional mipmap levels.

src/xenia/kernel/xboxkrnl/xboxkrnl_video.cc

@@ -381,7 +381,7 @@ void VdSwap(lpvoid_t buffer_ptr,  // ptr into primary ringbuffer
   buffer_ptr.Zero(64 * 4);
 
   // virtual -> physical
-  fetch.address &= 0x1FFFF;
+  fetch.base_address &= 0x1FFFF;
 
   uint32_t offset = 0;
   auto dwords = buffer_ptr.as_array<uint32_t>();