Profile guided optimization pass (#2582)

- Tune up LLJointRiggingInfoTab
- Visualize joint bounding boxes when visualizing joints
- Use LLJointRiggingInfo to caclulate desired resolution of a texture
- Throttle calls to calcPixelArea
- Fetch MeshSkinInfo immediately when header is received

1 files changed, 13 insertions, 0 deletions

diff --git a/indra/newview/llface.h b/indra/newview/llface.h
index 99642016f7..65637fbf85 100644
--- a/indra/newview/llface.h
+++ b/indra/newview/llface.h
@@ -234,8 +234,14 @@ public:
     // return true if this face is in an alpha draw pool
     bool isInAlphaPool() const;
 public: //aligned members
+
+    // bounding box of face in drawable space
     LLVector4a      mExtents[2];
 
+    // cached bounding box of rigged face in world space
+    // calculated on-demand by LLFace::calcPixelArea and may not be up-to-date
+    LLVector4a  mRiggedExtents[2] = { LLVector4a(0,0,0), LLVector4a(0,0,0) };
+
 private:
     friend class LLViewerTextureList;
     F32         adjustPartialOverlapPixelArea(F32 cos_angle_to_view_dir, F32 radius );
@@ -301,7 +307,14 @@ private:
     S32         mReferenceIndex;
     std::vector<S32> mRiggedIndex;
 
+    // gFrameTimeSeconds when mPixelArea was last updated
+    F32         mLastPixelAreaUpdate = 0.f;
+
+    // virtual size of face in texture area  (mPixelArea adjusted by texture repeats)
+    // used to determine desired resolution of texture
     F32         mVSize;
+
+    // pixel area face covers on screen
     F32         mPixelArea;
 
     //importance factor, in the range [0, 1.0].