diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 552814c7e..64f92ae73 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -119,6 +119,8 @@ void LLTexUnit::refreshState(void)
 	// We set dirty to true so that the tex unit knows to ignore caching
 	// and we reset the cached tex unit state
 
+	gGL.flush();
+	
 	glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
 
 	//
@@ -163,6 +165,7 @@ void LLTexUnit::activate(void)
 
 	if ((S32)gGL.mCurrTextureUnitIndex != mIndex || gGL.mDirty)
 	{
+		gGL.flush();
 		glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
 		gGL.mCurrTextureUnitIndex = mIndex;
 	}
@@ -180,6 +183,7 @@ void LLTexUnit::enable(eTextureType type)
 			disable(); // Force a disable of a previous texture type if it's enabled.
 		}
 		mCurrTexType = type;
+		gGL.flush();
 		if (mIndex < gGLManager.mNumTextureUnits)
 		{
 			glEnable(sGLTextureType[type]);
@@ -195,6 +199,7 @@ void LLTexUnit::disable(void)
 	{
 		activate();
 		unbind(mCurrTexType);
+		gGL.flush();
 		if (mIndex < gGLManager.mNumTextureUnits)
 		{
 			glDisable(sGLTextureType[mCurrTexType]);
@@ -279,6 +284,7 @@ bool LLTexUnit::bind(LLImageGL* texture, bool for_rendering, bool forceBind)
 	}
 	if ((mCurrTexture != texture->getTexName()) || forceBind)
 	{
+		gGL.flush();
 		activate();
 		enable(texture->getTarget());
 		mCurrTexture = texture->getTexName();
@@ -406,6 +412,8 @@ void LLTexUnit::setTextureAddressMode(eTextureAddressMode mode)
 {
 	if (mIndex < 0 || mCurrTexture == 0) return;
 
+	gGL.flush();
+
 	activate();
 
 	glTexParameteri (sGLTextureType[mCurrTexType], GL_TEXTURE_WRAP_S, sGLAddressMode[mode]);
@@ -420,6 +428,8 @@ void LLTexUnit::setTextureFilteringOption(LLTexUnit::eTextureFilterOptions optio
 {
 	if (mIndex < 0 || mCurrTexture == 0) return;
 
+	gGL.flush();
+
 	if (option == TFO_POINT)
 	{
 		glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@@ -472,6 +482,8 @@ void LLTexUnit::setTextureBlendType(eTextureBlendType type)
 		return;
 	}
 
+	gGL.flush();
+
 	activate();
 	mCurrBlendType = type;
 	S32 scale_amount = 1;
@@ -588,6 +600,7 @@ void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eT
 	if (mCurrBlendType != TB_COMBINE || gGL.mDirty)
 	{
 		mCurrBlendType = TB_COMBINE;
+		gGL.flush();
 		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
 	}
 
@@ -598,6 +611,8 @@ void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eT
 		return;
 	}
 
+	gGL.flush();
+
 	// Get the gl source enums according to the eTextureBlendSrc sources passed in
 	GLint source1 = getTextureSource(src1);
 	GLint source2 = getTextureSource(src2);
@@ -730,6 +745,7 @@ void LLTexUnit::setColorScale(S32 scale)
 	if (mCurrColorScale != scale || gGL.mDirty)
 	{
 		mCurrColorScale = scale;
+		gGL.flush();
 		glTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE, scale );
 	}
 }
@@ -739,6 +755,7 @@ void LLTexUnit::setAlphaScale(S32 scale)
 	if (mCurrAlphaScale != scale || gGL.mDirty)
 	{
 		mCurrAlphaScale = scale;
+		gGL.flush();
 		glTexEnvi( GL_TEXTURE_ENV, GL_ALPHA_SCALE, scale );
 	}
 }