1 files changed, 22 insertions, 13 deletions

diff --git a/indra/newview/llvowater.cpp b/indra/newview/llvowater.cpp
index 69ebad61ac..e8a1c3d1d6 100644
--- a/indra/newview/llvowater.cpp
+++ b/indra/newview/llvowater.cpp
@@ -100,17 +100,8 @@ void LLVOWater::updateTextures()
 }
 
 // Never gets called
-BOOL LLVOWater::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
+void  LLVOWater::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
 {
- 	/*if (mDead || !(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_WATER)))
-	{
-		return TRUE;
-	}
-	if (mDrawable) 
-	{
-		gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
-	}*/
-	return TRUE;
 }
 
 LLDrawable *LLVOWater::createDrawable(LLPipeline *pipeline)
@@ -146,6 +137,10 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 		drawable->addFace(poolp, NULL);
 	}
 	face = drawable->getFace(0);
+	if (!face)
+	{
+		return TRUE;
+	}
 
 //	LLVector2 uvs[4];
 //	LLVector3 vtx[4];
@@ -160,14 +155,14 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 	static const unsigned int vertices_per_quad = 4;
 	static const unsigned int indices_per_quad = 6;
 
-	const S32 size = gSavedSettings.getBOOL("RenderTransparentWater") ? 16 : 1;
+	const S32 size = gSavedSettings.getBOOL("RenderTransparentWater") && LLGLSLShader::sNoFixedFunction ? 16 : 1;
 
 	const S32 num_quads = size * size;
 	face->setSize(vertices_per_quad * num_quads,
 				  indices_per_quad * num_quads);
 	
 	LLVertexBuffer* buff = face->getVertexBuffer();
-	if (!buff)
+	if (!buff || !buff->isWriteable())
 	{
 		buff = new LLVertexBuffer(LLDrawPoolWater::VERTEX_DATA_MASK, GL_DYNAMIC_DRAW_ARB);
 		buff->allocateBuffer(face->getGeomCount(), face->getIndicesCount(), TRUE);
@@ -197,6 +192,13 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 
 	F32 size_inv = 1.f / size;
 
+	F32 z_fudge = 0.f;
+
+	if (getIsEdgePatch())
+	{ //bump edge patches down 10 cm to prevent aliasing along edges
+		z_fudge = -0.1f;
+	}
+
 	for (y = 0; y < size; y++)
 	{
 		for (x = 0; x < size; x++)
@@ -205,6 +207,7 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 			position_agent = getPositionAgent() - getScale() * 0.5f;
 			position_agent.mV[VX] += (x + 0.5f) * step_x;
 			position_agent.mV[VY] += (y + 0.5f) * step_y;
+			position_agent.mV[VZ] += z_fudge;
 
 			*verticesp++  = position_agent - right + up;
 			*verticesp++  = position_agent - right - up;
@@ -231,7 +234,7 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 		}
 	}
 	
-	buff->setBuffer(0);
+	buff->flush();
 
 	mDrawable->movePartition();
 	LLPipeline::sCompiles++;
@@ -282,6 +285,11 @@ void LLVOWater::updateSpatialExtents(LLVector4a &newMin, LLVector4a& newMax)
 
 U32 LLVOWater::getPartitionType() const
 { 
+	if (mIsEdgePatch)
+	{
+		return LLViewerRegion::PARTITION_VOIDWATER;
+	}
+
 	return LLViewerRegion::PARTITION_WATER; 
 }
 
@@ -300,6 +308,7 @@ LLWaterPartition::LLWaterPartition()
 
 LLVoidWaterPartition::LLVoidWaterPartition()
 {
+	mOcclusionEnabled = FALSE;
 	mDrawableType = LLPipeline::RENDER_TYPE_VOIDWATER;
 	mPartitionType = LLViewerRegion::PARTITION_VOIDWATER;
 }