1 files changed, 42 insertions, 10 deletions

diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index 3e16ccf3da..900f126049 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -28,6 +28,10 @@
 
 #include "llspatialpartition.h"
 
+#include "llappviewer.h"
+#include "lltexturecache.h"
+#include "lltexturefetch.h"
+#include "llimageworker.h"
 #include "llviewerwindow.h"
 #include "llviewerobjectlist.h"
 #include "llvovolume.h"
@@ -1221,6 +1225,7 @@ LLSpatialGroup::LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part) :
 	for (U32 i = 0; i < LLViewerCamera::NUM_CAMERAS; i++)
 	{
 		mOcclusionQuery[i] = 0;
+		mOcclusionIssued[i] = 0;
 		mOcclusionState[i] = parent ? SG_STATE_INHERIT_MASK & parent->mOcclusionState[i] : 0;
 		mVisible[i] = 0;
 	}
@@ -1543,6 +1548,8 @@ BOOL LLSpatialGroup::rebound()
 }
 
 static LLFastTimer::DeclareTimer FTM_OCCLUSION_READBACK("Readback Occlusion");
+static LLFastTimer::DeclareTimer FTM_OCCLUSION_WAIT("Wait");
+
 void LLSpatialGroup::checkOcclusion()
 {
 	if (LLPipeline::sUseOcclusion > 1)
@@ -1560,6 +1567,22 @@ void LLSpatialGroup::checkOcclusion()
 			if (mOcclusionQuery[LLViewerCamera::sCurCameraID])
 			{
 				glGetQueryObjectuivARB(mOcclusionQuery[LLViewerCamera::sCurCameraID], GL_QUERY_RESULT_AVAILABLE_ARB, &available);
+
+				if (mOcclusionIssued[LLViewerCamera::sCurCameraID] < gFrameCount)
+				{ //query was issued last frame, wait until it's available
+					S32 max_loop = 1024;
+					LLFastTimer t(FTM_OCCLUSION_WAIT);
+					while (!available && max_loop-- > 0)
+					{
+						F32 max_time = llmin(gFrameIntervalSeconds*10.f, 1.f);
+						//do some usefu work while we wait
+						LLAppViewer::getTextureCache()->update(max_time); // unpauses the texture cache thread
+						LLAppViewer::getImageDecodeThread()->update(max_time); // unpauses the image thread
+						LLAppViewer::getTextureFetch()->update(max_time); // unpauses the texture fetch thread
+						
+						glGetQueryObjectuivARB(mOcclusionQuery[LLViewerCamera::sCurCameraID], GL_QUERY_RESULT_AVAILABLE_ARB, &available);
+					}
+				}
 			}
 			else
 			{
@@ -1679,6 +1702,9 @@ void LLSpatialGroup::doOcclusion(LLCamera* camera)
 					{
 						LLFastTimer t(FTM_PUSH_OCCLUSION_VERTS);
 						
+						//store which frame this query was issued on
+						mOcclusionIssued[LLViewerCamera::sCurCameraID] = gFrameCount;
+
 						{
 							LLFastTimer t(FTM_OCCLUSION_BEGIN_QUERY);
 							glBeginQueryARB(mode, mOcclusionQuery[LLViewerCamera::sCurCameraID]);					
@@ -3749,11 +3775,7 @@ void renderRaycast(LLDrawable* drawablep)
 				for (S32 i = 0; i < volume->getNumVolumeFaces(); ++i)
 				{
 					const LLVolumeFace& face = volume->getVolumeFace(i);
-					if (!face.mOctree)
-					{
-						((LLVolumeFace*) &face)->createOctree(); 
-					}
-
+					
 					gGL.pushMatrix();
 					gGL.translatef(trans.mV[0], trans.mV[1], trans.mV[2]);					
 					gGL.multMatrix((F32*) vobj->getRelativeXform().mMatrix);
@@ -3776,9 +3798,6 @@ void renderRaycast(LLDrawable* drawablep)
 					LLVector4a dir;
 					dir.setSub(enda, starta);
 
-					F32 t = 1.f;
-
-					LLRenderOctreeRaycast render(starta, dir, &t);
 					gGL.flush();
 					glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);				
 
@@ -3790,8 +3809,21 @@ void renderRaycast(LLDrawable* drawablep)
 						gGL.syncMatrices();
 						glDrawElements(GL_TRIANGLES, face.mNumIndices, GL_UNSIGNED_SHORT, face.mIndices);
 					}
-						
-					render.traverse(face.mOctree);
+					
+					if (!volume->isUnique())
+					{
+						F32 t = 1.f;
+
+						if (!face.mOctree)
+						{
+							((LLVolumeFace*) &face)->createOctree(); 
+						}
+
+						LLRenderOctreeRaycast render(starta, dir, &t);
+					
+						render.traverse(face.mOctree);
+					}
+
 					gGL.popMatrix();		
 					glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 				}