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-rw-r--r--indra/newview/featuretable_mac.txt4
-rw-r--r--indra/newview/llvovolume.cpp21
2 files changed, 18 insertions, 7 deletions
diff --git a/indra/newview/featuretable_mac.txt b/indra/newview/featuretable_mac.txt
index 390da2273d..1e2fbc677d 100644
--- a/indra/newview/featuretable_mac.txt
+++ b/indra/newview/featuretable_mac.txt
@@ -1,4 +1,4 @@
-version 31
+version 32
// The version number above should be implemented IF AND ONLY IF some
// change has been made that is sufficiently important to justify
// resetting the graphics preferences of all users to the recommended
@@ -67,7 +67,7 @@ RenderDeferred 1 1
RenderDeferredSSAO 1 1
RenderShadowDetail 1 2
WatchdogDisabled 1 1
-RenderUseStreamVBO 1 0
+RenderUseStreamVBO 1 1
RenderFSAASamples 1 16
RenderMaxTextureIndex 1 16
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 3d013f286c..20f8674655 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -4624,6 +4624,19 @@ struct CompareBatchBreakerModified
void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::vector<LLFace*>& faces, BOOL distance_sort, BOOL batch_textures)
{
+ U32 buffer_usage = group->mBufferUsage;
+
+#if LL_DARWIN
+ // HACK from Leslie:
+ // Disable VBO usage for alpha on Mac OS X because it kills the framerate
+ // due to implicit calls to glTexSubImage that are beyond our control.
+ // (this works because the only calls here that sort by distance are alpha)
+ if (distance_sort)
+ {
+ buffer_usage = 0x0;
+ }
+#endif
+
//calculate maximum number of vertices to store in a single buffer
U32 max_vertices = (gSavedSettings.getS32("RenderMaxVBOSize")*1024)/LLVertexBuffer::calcVertexSize(group->mSpatialPartition->mVertexDataMask);
max_vertices = llmin(max_vertices, (U32) 65535);
@@ -4805,17 +4818,15 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
if (!buffer)
{ //create new buffer if needed
- buffer = createVertexBuffer(mask,
- group->mBufferUsage);
+ buffer = createVertexBuffer(mask, buffer_usage);
buffer->allocateBuffer(geom_count, index_count, TRUE);
}
else
{ //resize pre-existing buffer
- if (LLVertexBuffer::sEnableVBOs && buffer->getUsage() != group->mBufferUsage ||
+ if (LLVertexBuffer::sEnableVBOs && buffer->getUsage() != buffer_usage ||
buffer->getTypeMask() != mask)
{
- buffer = createVertexBuffer(mask,
- group->mBufferUsage);
+ buffer = createVertexBuffer(mask, buffer_usage);
buffer->allocateBuffer(geom_count, index_count, TRUE);
}
else