4 files changed, 9 insertions, 3 deletions
diff --git a/indra/newview/lldrawpool.cpp b/indra/newview/lldrawpool.cpp
index 6c0be0a5c2..b8c143e9c1 100644
--- a/indra/newview/lldrawpool.cpp
+++ b/indra/newview/lldrawpool.cpp
@@ -418,6 +418,7 @@ void LLRenderPass::applyModelMatrix(LLDrawInfo& params)
 		gGL.loadMatrix(gGLModelView);
 		if (params.mModelMatrix)
 		{
+			llassert(gGL.getMatrixMode() == LLRender::MM_MODELVIEW);
 			gGL.multMatrix((GLfloat*) params.mModelMatrix->mMatrix);
 		}
 		gPipeline.mMatrixOpCount++;
diff --git a/indra/newview/lldrawpoolterrain.cpp b/indra/newview/lldrawpoolterrain.cpp
index 7fc78fb382..9bc32fddbd 100644
--- a/indra/newview/lldrawpoolterrain.cpp
+++ b/indra/newview/lldrawpoolterrain.cpp
@@ -308,6 +308,7 @@ void LLDrawPoolTerrain::drawLoop()
 
 			if (model_matrix != gGLLastMatrix)
 			{
+				llassert(gGL.getMatrixMode() == LLRender::MM_MODELVIEW);
 				gGLLastMatrix = model_matrix;
 				gGL.loadMatrix(gGLModelView);
 				if (model_matrix)
@@ -594,7 +595,8 @@ void LLDrawPoolTerrain::renderFull4TU()
 	gGL.matrixMode(LLRender::MM_TEXTURE);
 	gGL.loadIdentity();
 	gGL.translatef(-1.f, 0.f, 0.f);
-  
+	gGL.matrixMode(LLRender::MM_MODELVIEW);
+
 	// Set alpha texture and do lighting modulation
 	gGL.getTexUnit(3)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_PREV_COLOR, LLTexUnit::TBS_VERT_COLOR);
 	gGL.getTexUnit(3)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
@@ -742,6 +744,7 @@ void LLDrawPoolTerrain::renderFull2TU()
 	gGL.matrixMode(LLRender::MM_TEXTURE);
 	gGL.loadIdentity();
 	gGL.translatef(-1.f, 0.f, 0.f);
+	gGL.matrixMode(LLRender::MM_MODELVIEW);
 
 	// Care about alpha only
 	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
@@ -781,6 +784,7 @@ void LLDrawPoolTerrain::renderFull2TU()
 	gGL.matrixMode(LLRender::MM_TEXTURE);
 	gGL.loadIdentity();
 	gGL.translatef(-2.f, 0.f, 0.f);
+	gGL.matrixMode(LLRender::MM_MODELVIEW);
 
 	// Care about alpha only
 	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
diff --git a/indra/newview/lldrawpooltree.cpp b/indra/newview/lldrawpooltree.cpp
index 83f04e45a8..fedbd782dc 100644
--- a/indra/newview/lldrawpooltree.cpp
+++ b/indra/newview/lldrawpooltree.cpp
@@ -116,6 +116,7 @@ void LLDrawPoolTree::render(S32 pass)
 				gGL.loadMatrix(gGLModelView);
 				if (model_matrix)
 				{
+					llassert(gGL.getMatrixMode() == LLRender::MM_MODELVIEW);
 					gGL.multMatrix((GLfloat*) model_matrix->mMatrix);
 				}
 				gPipeline.mMatrixOpCount++;
diff --git a/indra/newview/llvosurfacepatch.cpp b/indra/newview/llvosurfacepatch.cpp
index 94a3111f4c..cb905d02da 100644
--- a/indra/newview/llvosurfacepatch.cpp
+++ b/indra/newview/llvosurfacepatch.cpp
@@ -80,9 +80,9 @@ public:
 			glNormalPointer(GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_NORMAL], (void*)(base + mOffsets[TYPE_NORMAL]));
 		}
 		if (data_mask & MAP_TEXCOORD3)
-		{ //substitute tex coord 0 for tex coord 3
+		{ //substitute tex coord 1 for tex coord 3
 			glClientActiveTextureARB(GL_TEXTURE3_ARB);
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], (void*)(base + mOffsets[TYPE_TEXCOORD0]));
+			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], (void*)(base + mOffsets[TYPE_TEXCOORD1]));
 			glClientActiveTextureARB(GL_TEXTURE0_ARB);
 		}
 		if (data_mask & MAP_TEXCOORD2)