diff --git a/base/renderprogs/ambient_lighting.ps.hlsl b/base/renderprogs/ambient_lighting.ps.hlsl
index a952a97d..d34ccc1c 100644
--- a/base/renderprogs/ambient_lighting.ps.hlsl
+++ b/base/renderprogs/ambient_lighting.ps.hlsl
@@ -78,9 +78,12 @@ void main( PS_IN fragment, out PS_OUT result ) {
 	half3 diffuseColor = diffuseMap * ( rpDiffuseModifier.xyz ) * 1.5f;
 	half3 specularColor = specMap.xyz * specularContribution * ( rpSpecularModifier.xyz ); 
 	
+	float halfLdotN = 1.0f;
+#if defined(USE_HALF_LAMBERT)
 	// RB: http://developer.valvesoftware.com/wiki/Half_Lambert
-	float halfLdotN = dot3( localNormal, lightVector ) * 0.5 + 0.5;
+	halfLdotN = dot3( localNormal, lightVector ) * 0.5 + 0.5;
 	halfLdotN *= halfLdotN;
+#endif
 	
 	// traditional very dark Lambert light model used in Doom 3
 	float ldotN = dot3( localNormal, lightVector );
diff --git a/base/renderprogs/interactionSM.ps.hlsl b/base/renderprogs/interactionSM.ps.hlsl
index 024442b3..b3a597a8 100644
--- a/base/renderprogs/interactionSM.ps.hlsl
+++ b/base/renderprogs/interactionSM.ps.hlsl
@@ -243,7 +243,7 @@ void main( PS_IN fragment, out PS_OUT result )
 	float shadow = 0.0;
 	
 	// RB: casting a float to int and using it as index can really kill the performance ...
-	float numSamples = 6.0; //int(rpScreenCorrectionFactor.w);
+	float numSamples = 12.0f; //int(rpScreenCorrectionFactor.w);
 	float stepSize = 1.0 / numSamples;
 	
 	float4 jitterTC = ( fragment.position * rpScreenCorrectionFactor ) + rpJitterTexOffset;
@@ -255,7 +255,7 @@ void main( PS_IN fragment, out PS_OUT result )
 	rot.y = sin( random.x );
 	
 	float shadowTexelSize = rpScreenCorrectionFactor.z * rpJitterTexScale.x;
-    for( int i = 0; i < 6; i++ )
+    for( int i = 0; i < 12; i++ )
     {
         float2 jitter = poissonDisk[i];
 		float2 jitterRotated;
diff --git a/neo/d3xp/menus/MenuScreen_Shell_SystemOptions.cpp b/neo/d3xp/menus/MenuScreen_Shell_SystemOptions.cpp
index 21b8397f..5ede9a17 100644
--- a/neo/d3xp/menus/MenuScreen_Shell_SystemOptions.cpp
+++ b/neo/d3xp/menus/MenuScreen_Shell_SystemOptions.cpp
@@ -614,7 +614,7 @@ void idMenuScreen_Shell_SystemOptions::idMenuDataSource_SystemSettings::AdjustFi
 			const float percent = LinearAdjust(r_lightScale.GetFloat(), 0.0f, 5.0f, 0.0f, 100.0f );
 			const float adjusted = percent + ( float )adjustAmount;
 			const float clamped = idMath::ClampFloat( 0.0f, 100.0f, adjusted );
-			r_exposure.SetFloat( LinearAdjust( clamped, 0.0f, 100.0f, 0.0f, 1.0f ) );
+			//r_exposure.SetFloat( LinearAdjust( clamped, 0.0f, 100.0f, 0.0f, 1.0f ) );
 			r_lightScale.SetFloat( LinearAdjust( clamped, 0.0f, 100.0f, 0.0f, 5.0f ) ); //GK: More light options
 			break;
 		}
diff --git a/neo/renderer/OpenGL/BufferObject_GL.cpp b/neo/renderer/OpenGL/BufferObject_GL.cpp
index 8a7ed2fd..f95c6687 100644
--- a/neo/renderer/OpenGL/BufferObject_GL.cpp
+++ b/neo/renderer/OpenGL/BufferObject_GL.cpp
@@ -55,8 +55,10 @@ UnbindBufferObjects
 */
 void UnbindBufferObjects()
 {
-	glBindBuffer(GL_ARRAY_BUFFER, 0);
-	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+	if (!glConfig.directStateAccess) {
+		glBindBuffer(GL_ARRAY_BUFFER, 0);
+		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+	}
 }
 
 
diff --git a/neo/renderer/OpenGL/Image_GL.cpp b/neo/renderer/OpenGL/Image_GL.cpp
index e8400dc4..639b7363 100644
--- a/neo/renderer/OpenGL/Image_GL.cpp
+++ b/neo/renderer/OpenGL/Image_GL.cpp
@@ -764,7 +764,7 @@ void idImage::SetTextureParameters() {
 	if( glConfig.textureLODBiasAvailable && ( usage != TD_FONT ) )
 	{
 		// use a blurring LOD bias in combination with high anisotropy to fix our aliasing grate textures...
-		glTexParameterf( target, GL_TEXTURE_LOD_BIAS_EXT, 0.5 ); //r_lodBias.GetFloat() );
+		glTextureParameterf( texnum, GL_TEXTURE_LOD_BIAS_EXT, r_lodBias.GetFloat() );
 	}
 	*/
 	// RB end
diff --git a/neo/renderer/OpenGL/RenderBackend_GL.cpp b/neo/renderer/OpenGL/RenderBackend_GL.cpp
index dbb36380..46bd436a 100644
--- a/neo/renderer/OpenGL/RenderBackend_GL.cpp
+++ b/neo/renderer/OpenGL/RenderBackend_GL.cpp
@@ -249,6 +249,7 @@ static void R_CheckPortableExtensions()
 	
 	// GL_ARB_seamless_cube_map
 	glConfig.seamlessCubeMapAvailable = GLEW_ARB_seamless_cube_map != 0;
+	R_PrintExtensionStatus(glConfig.seamlessCubeMapAvailable, "GL_ARB_seamless_cube_map");
 	r_useSeamlessCubeMap.SetModified();		// the CheckCvars() next frame will enable / disable it
 	
 	// GL_ARB_framebuffer_sRGB
@@ -1410,7 +1411,9 @@ void idRenderBackend::CheckCVars()
 		{
 			if( globalImages->images[i] )
 			{
-				globalImages->images[i]->Bind();
+				if (!glConfig.directStateAccess) {
+					globalImages->images[i]->Bind();
+				}
 				globalImages->images[i]->SetTexParameters();
 			}
 		}
diff --git a/neo/renderer/RenderBackend.cpp b/neo/renderer/RenderBackend.cpp
index 38aaa816..3c0837b6 100644
--- a/neo/renderer/RenderBackend.cpp
+++ b/neo/renderer/RenderBackend.cpp
@@ -1975,7 +1975,7 @@ void idRenderBackend::AmbientPass( const drawSurf_t* const* drawSurfs, int numDr
 	
 	GL_Color( colorWhite );
 	
-	const float lightScale = 1.0f; //r_lightScale.GetFloat();
+	const float lightScale = r_lightScale.GetFloat();
 	const idVec4 lightColor = colorWhite * lightScale;
 	// apply the world-global overbright and the 2x factor for specular
 	const idVec4 diffuseColor = lightColor;