From 2a25ce7472a64963cfd6c49f026d4c235940629b Mon Sep 17 00:00:00 2001
From: Tim Rowley <timothy.o.rowley@intel.com>
Date: Tue, 16 Aug 2016 12:40:47 -0600
Subject: swr: [rasterizer core] make dirtytile list point directly to
 macrotilequeues

Speeds up high geometry HPC workloads.

Signed-off-by: Tim Rowley <timothy.o.rowley@intel.com>
---
 src/gallium/drivers/swr/rasterizer/core/threads.cpp | 20 ++++++++++----------
 src/gallium/drivers/swr/rasterizer/core/tilemgr.cpp |  3 ++-
 src/gallium/drivers/swr/rasterizer/core/tilemgr.h   |  6 +++---
 3 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/src/gallium/drivers/swr/rasterizer/core/threads.cpp b/src/gallium/drivers/swr/rasterizer/core/threads.cpp
index dce23b2486e..9665f09e2c8 100644
--- a/src/gallium/drivers/swr/rasterizer/core/threads.cpp
+++ b/src/gallium/drivers/swr/rasterizer/core/threads.cpp
@@ -465,10 +465,12 @@ void WorkOnFifoBE(
         }
 
         // Grab the list of all dirty macrotiles. A tile is dirty if it has work queued to it.
-        std::vector<uint32_t> &macroTiles = pDC->pTileMgr->getDirtyTiles();
+        auto &macroTiles = pDC->pTileMgr->getDirtyTiles();
 
-        for (uint32_t tileID : macroTiles)
+        for (auto tile : macroTiles)
         {
+            uint32_t tileID = tile->mId;
+
             // Only work on tiles for this numa node
             uint32_t x, y;
             pDC->pTileMgr->getTileIndices(tileID, x, y);
@@ -477,9 +479,7 @@ void WorkOnFifoBE(
                 continue;
             }
 
-            MacroTileQueue &tile = pDC->pTileMgr->getMacroTileQueue(tileID);
-            
-            if (!tile.getNumQueued())
+            if (!tile->getNumQueued())
             {
                 continue;
             }
@@ -490,26 +490,26 @@ void WorkOnFifoBE(
                 continue;
             }
 
-            if (tile.tryLock())
+            if (tile->tryLock())
             {
                 BE_WORK *pWork;
 
                 RDTSC_START(WorkerFoundWork);
 
-                uint32_t numWorkItems = tile.getNumQueued();
+                uint32_t numWorkItems = tile->getNumQueued();
                 SWR_ASSERT(numWorkItems);
 
-                pWork = tile.peek();
+                pWork = tile->peek();
                 SWR_ASSERT(pWork);
                 if (pWork->type == DRAW)
                 {
                     pContext->pHotTileMgr->InitializeHotTiles(pContext, pDC, tileID);
                 }
 
-                while ((pWork = tile.peek()) != nullptr)
+                while ((pWork = tile->peek()) != nullptr)
                 {
                     pWork->pfnWork(pDC, workerId, tileID, &pWork->desc);
-                    tile.dequeue();
+                    tile->dequeue();
                 }
                 RDTSC_STOP(WorkerFoundWork, numWorkItems, pDC->drawId);
 
diff --git a/src/gallium/drivers/swr/rasterizer/core/tilemgr.cpp b/src/gallium/drivers/swr/rasterizer/core/tilemgr.cpp
index e0aa8dd0307..1bd1805b52b 100644
--- a/src/gallium/drivers/swr/rasterizer/core/tilemgr.cpp
+++ b/src/gallium/drivers/swr/rasterizer/core/tilemgr.cpp
@@ -54,11 +54,12 @@ void MacroTileMgr::enqueue(uint32_t x, uint32_t y, BE_WORK *pWork)
 
     MacroTileQueue &tile = mTiles[id];
     tile.mWorkItemsFE++;
+    tile.mId = id;
 
     if (tile.mWorkItemsFE == 1)
     {
         tile.clear(mArena);
-        mDirtyTiles.push_back(id);
+        mDirtyTiles.push_back(&tile);
     }
 
     mWorkItemsProduced++;
diff --git a/src/gallium/drivers/swr/rasterizer/core/tilemgr.h b/src/gallium/drivers/swr/rasterizer/core/tilemgr.h
index 41d29ba0c7a..4ec02838ab9 100644
--- a/src/gallium/drivers/swr/rasterizer/core/tilemgr.h
+++ b/src/gallium/drivers/swr/rasterizer/core/tilemgr.h
@@ -95,6 +95,7 @@ struct MacroTileQueue
     ///@todo This will all be private.
     uint32_t mWorkItemsFE = 0;
     uint32_t mWorkItemsBE = 0;
+    uint32_t mId = 0;
 
 private:
     QUEUE<BE_WORK> mFifo;
@@ -123,8 +124,7 @@ public:
         mDirtyTiles.clear();
     }
 
-    INLINE std::vector<uint32_t>& getDirtyTiles() { return mDirtyTiles; }
-    INLINE MacroTileQueue& getMacroTileQueue(uint32_t id) { return mTiles[id]; }
+    INLINE std::vector<MacroTileQueue*>& getDirtyTiles() { return mDirtyTiles; }
     void markTileComplete(uint32_t id);
 
     INLINE bool isWorkComplete()
@@ -145,7 +145,7 @@ private:
     std::unordered_map<uint32_t, MacroTileQueue> mTiles;
 
     // Any tile that has work queued to it is a dirty tile.
-    std::vector<uint32_t> mDirtyTiles;
+    std::vector<MacroTileQueue*> mDirtyTiles;
 
     OSALIGNLINE(LONG) mWorkItemsProduced { 0 };
     OSALIGNLINE(volatile LONG) mWorkItemsConsumed { 0 };
-- 
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