OClCollMeshEngn: use proper alignment for small StagingBuffer size

Aligning to uint32_t saves about 1 page of mem?
2025-11-28 03:13:55 -04:00
parent 280b6f7d1c
commit 1f35dba2ca
2 changed files with 10 additions and 6 deletions
@@ -992,8 +992,10 @@ void OpenClCollatingAndMeshingEngine::produceAmbienceStimulusFrame(

 	// Write the ambience count to the ambienceStimFrame
 	StimulusFrame& ambienceFrame = ambienceStimFrame->get();
-	uint32_t* ambienceValue = reinterpret_cast<uint32_t*>(
-		ambienceFrame.slotDesc.vaddr);
+	using PcloudAmbienceStimVal = PcloudAmbienceStencil
+		::PcloudAmbienceStimulusValue;
+	PcloudAmbienceStimVal* ambienceValue = reinterpret_cast<
+		PcloudAmbienceStimVal*>(ambienceFrame.slotDesc.vaddr);
 	ambienceValue[0] = ambienceCount;
 }

@@ -1223,9 +1225,11 @@ public:

 			// Read the stimFrame value (ambience count)
 			StimulusFrame& ambienceFrame = context->ambienceStimFrame->get();
-			uint32_t* ambienceValue = reinterpret_cast<uint32_t*>(
-				ambienceFrame.slotDesc.vaddr);
-			uint32_t stimFrameValue = ambienceValue[0];
+			using PcloudAmbienceStimVal = PcloudAmbienceStencil
+				::PcloudAmbienceStimulusValue;
+			PcloudAmbienceStimVal* ambienceValue = reinterpret_cast<
+				PcloudAmbienceStimVal*>(ambienceFrame.slotDesc.vaddr);
+			PcloudAmbienceStimVal stimFrameValue = ambienceValue[0];

 			bool meetsPostrinThreshold = (framesMetThreshold >= postrinThreshold);

@@ -56,7 +56,7 @@ static StagingBuffer::IOEngineConstraints openClIntensityInputConstraints(

 static StagingBuffer::IOEngineConstraints openClAmbienceInputConstraints(
 	// slotStartAlignmentByteVal (sizeof(void*))
-	sizeof(void*),
+	sizeof(PcloudAmbienceStencil::PcloudAmbienceStimulusValue),
 	// slotPadToNBytes (sizeof(PcloudAmbienceStimulusValue))
 	sizeof(PcloudAmbienceStencil::PcloudAmbienceStimulusValue),
 	// frameStartAlignmentByteVal (page alignment)