swr: [rasterizer core] Reset DrawContext arena at end of draw rather than upon reclaim of DC

Keeps overall memory consumption lower.
Also, remove unused knobs.

2 files changed, 4 insertions, 21 deletions

diff --git a/src/gallium/drivers/swr/rasterizer/core/threads.cpp b/src/gallium/drivers/swr/rasterizer/core/threads.cpp
index c4567eaee87..57408049d03 100644
--- a/src/gallium/drivers/swr/rasterizer/core/threads.cpp
+++ b/src/gallium/drivers/swr/rasterizer/core/threads.cpp
@@ -290,6 +290,10 @@ INLINE void CompleteDrawContext(SWR_CONTEXT* pContext, DRAW_CONTEXT* pDC)
     {
         _ReadWriteBarrier();
 
+        // Cleanup memory allocations
+        pDC->pArena->Reset();
+        pDC->pTileMgr->initialize();
+
         pContext->dcRing.Dequeue();  // Remove from tail
     }
 }
diff --git a/src/gallium/drivers/swr/rasterizer/scripts/knob_defs.py b/src/gallium/drivers/swr/rasterizer/scripts/knob_defs.py
index 5843abf2aeb..0f3ded68544 100644
--- a/src/gallium/drivers/swr/rasterizer/scripts/knob_defs.py
+++ b/src/gallium/drivers/swr/rasterizer/scripts/knob_defs.py
@@ -144,27 +144,6 @@ KNOBS = [
         'category'  : 'perf',
     }],
 
-    ['MAX_FRAC_ODD_TESS_FACTOR', {
-        'type'      : 'float',
-        'default'   : '63.0f',
-        'desc'      : ['(DEBUG) Maximum tessellation factor for fractional-odd partitioning.'],
-        'category'  : 'perf',
-    }],
-
-    ['MAX_FRAC_EVEN_TESS_FACTOR', {
-        'type'      : 'float',
-        'default'   : '64.0f',
-        'desc'      : ['(DEBUG) Maximum tessellation factor for fractional-even partitioning.'],
-        'category'  : 'perf',
-    }],
-
-    ['MAX_INTEGER_TESS_FACTOR', {
-        'type'      : 'uint32_t',
-        'default'   : '64',
-        'desc'      : ['(DEBUG) Maximum tessellation factor for integer partitioning.'],
-        'category'  : 'perf',
-    }],
-
 
     ['BUCKETS_ENABLE_THREADVIZ', {
         'type'      : 'bool',