diff --git a/code/nel/include/nel/3d/gpu_program.h b/code/nel/include/nel/3d/gpu_program.h
index 30fa23c52..e7112d410 100644
--- a/code/nel/include/nel/3d/gpu_program.h
+++ b/code/nel/include/nel/3d/gpu_program.h
@@ -64,6 +64,15 @@ public:
 // This is only used for user provided shaders, not for builtin shaders, 
 // as it is a slow method which has to go through all of the options every time.
 // Builtin shaders should set all flags to 0.
+// Example:
+//   User shader flags Matrices in the Vertex Program:
+//   -> When rendering with a material, the driver will call setUniformDriver,
+//      which will check if the flag Matrices exists, and if so, it will use
+//      the index cache to find which matrices are needed by the shader,
+//      and set those which are found.
+// This does not work extremely efficient, but it's the most practical option
+// for passing builtin parameters onto user provided shaders.
+// Note: May need additional flags related to scene sorting, etcetera.
 struct CGPUProgramFeatures
 {
 	CGPUProgramFeatures() : DriverFlags(0), MaterialFlags(0) { }
@@ -72,26 +81,12 @@ struct CGPUProgramFeatures
 	enum TDriverFlags
 	{
 		// Matrices
-		ModelView								= 0x00000001, 
-		ModelViewInverse						= 0x00000002, 
-		ModelViewTranspose						= 0x00000004, 
-		ModelViewInverseTranspose				= 0x00000008, 
-
-		Projection								= 0x00000010, 
-		ProjectionInverse						= 0x00000020, 
-		ProjectionTranspose						= 0x00000040, 
-		ProjectionInverseTranspose				= 0x00000080, 
-
-		ModelViewProjection						= 0x00000100, 
-		ModelViewProjectionInverse				= 0x00000200, 
-		ModelViewProjectionTranspose			= 0x00000400, 
-		ModelViewProjectionInverseTranspose		= 0x00000800, 
+		Matrices								= 0x00000001, 
 
 		// Fog
-		Fog										= 0x00001000, 
+		Fog										= 0x00000002, 
 	};
 	uint32 DriverFlags;
-	// uint NumLights;
 
 	enum TMaterialFlags
 	{
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_uniform.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_uniform.cpp
index a23235d06..658b6739a 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_uniform.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_uniform.cpp
@@ -309,57 +309,63 @@ bool CDriverGL::setUniformDriver(TProgram program)
 
 	if (features.DriverFlags)
 	{
-		if (features.DriverFlags & CGPUProgramFeatures::ModelView)
+		if (features.DriverFlags & CGPUProgramFeatures::Matrices)
 		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelView), ModelView, Identity);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ModelViewInverse)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewInverse), ModelView, Inverse);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ModelViewTranspose)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewTranspose), ModelView, Transpose);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ModelViewInverseTranspose)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewInverseTranspose), ModelView, InverseTranspose);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::Projection)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::Projection), Projection, Identity);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ProjectionInverse)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ProjectionInverse), Projection, Inverse);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ProjectionTranspose)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ProjectionTranspose), Projection, Transpose);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ProjectionInverseTranspose)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ProjectionInverseTranspose), Projection, InverseTranspose);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ModelViewProjection)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjection), ModelViewProjection, Identity);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ModelViewProjectionInverse)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionInverse), ModelViewProjection, Inverse);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ModelViewProjectionTranspose)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionTranspose), ModelViewProjection, Transpose);
-		}
-		if (features.DriverFlags & CGPUProgramFeatures::ModelViewProjectionInverseTranspose)
-		{
-			setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionInverseTranspose), ModelViewProjection, InverseTranspose);
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelView) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelView), ModelView, Identity);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelViewInverse) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewInverse), ModelView, Inverse);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelViewTranspose) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewTranspose), ModelView, Transpose);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelViewInverseTranspose) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewInverseTranspose), ModelView, InverseTranspose);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::Projection) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::Projection), Projection, Identity);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ProjectionInverse) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ProjectionInverse), Projection, Inverse);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ProjectionTranspose) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ProjectionTranspose), Projection, Transpose);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ProjectionInverseTranspose) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ProjectionInverseTranspose), Projection, InverseTranspose);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelViewProjection) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjection), ModelViewProjection, Identity);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionInverse) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionInverse), ModelViewProjection, Inverse);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionTranspose) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionTranspose), ModelViewProjection, Transpose);
+			}
+			if (prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionInverseTranspose) != ~0)
+			{
+				setUniformMatrix(program, prog->getUniformIndex(CGPUProgramIndex::ModelViewProjectionInverseTranspose), ModelViewProjection, InverseTranspose);
+			}
 		}
 		if (features.DriverFlags & CGPUProgramFeatures::Fog)
 		{
-			setUniformFog(program, prog->getUniformIndex(CGPUProgramIndex::Fog));
+			if (prog->getUniformIndex(CGPUProgramIndex::Fog) != ~0)
+			{
+				setUniformFog(program, prog->getUniformIndex(CGPUProgramIndex::Fog));
+			}
 		}
 	}
 
diff --git a/code/nel/src/3d/landscape.cpp b/code/nel/src/3d/landscape.cpp
index bf4cad45f..c6da6ec27 100644
--- a/code/nel/src/3d/landscape.cpp
+++ b/code/nel/src/3d/landscape.cpp
@@ -1208,7 +1208,7 @@ void			CLandscape::render(const CVector &refineCenter, const CVector &frontVecto
 			// c[4] take useful constants.
 			driver->setUniform4f(IDriver::VertexProgram, program->idx().ProgramConstants0, 0, 1, 0.5f, 0);
 			// c[5] take RefineCenter
-			driver->setuniform3f(IDriver::VertexProgram, program->idx().RefineCenter, refineCenter);
+			driver->setUniform3f(IDriver::VertexProgram, program->idx().RefineCenter, refineCenter);
 			// c[6] take info for Geomorph trnasition to TileNear.
 			driver->setUniform2f(IDriver::VertexProgram, program->idx().TileDist, CLandscapeGlobals::TileDistFarSqr, CLandscapeGlobals::OOTileDistDeltaSqr);
 			// c[10] take the fog vector.