diff --git a/include/IMaterialRendererServices.h b/include/IMaterialRendererServices.h
index 9f045b5d..ad9b9a29 100644
--- a/include/IMaterialRendererServices.h
+++ b/include/IMaterialRendererServices.h
@@ -65,9 +65,6 @@ public:
 	*/
 	virtual bool setVertexShaderConstant(const c8* name, const f32* floats, int count) = 0;
 
-	//! Bool interface for the above.
-	virtual bool setVertexShaderConstant(const c8* name, const bool* bools, int count) = 0;
-
 	//! Int interface for the above.
 	virtual bool setVertexShaderConstant(const c8* name, const s32* ints, int count) = 0;
 
@@ -89,9 +86,6 @@ public:
 	\return True if successful. */
 	virtual bool setPixelShaderConstant(const c8* name, const f32* floats, int count) = 0;
 
-	//! Bool interface for the above.
-	virtual bool setPixelShaderConstant(const c8* name, const bool* bools, int count) = 0;
-
 	//! Int interface for the above.
 	virtual bool setPixelShaderConstant(const c8* name, const s32* ints, int count) = 0;
 
diff --git a/source/Irrlicht/CCgMaterialRenderer.cpp b/source/Irrlicht/CCgMaterialRenderer.cpp
index a5e4937c..e997029d 100644
--- a/source/Irrlicht/CCgMaterialRenderer.cpp
+++ b/source/Irrlicht/CCgMaterialRenderer.cpp
@@ -195,11 +195,6 @@ bool CCgMaterialRenderer::setVertexShaderConstant(const c8* name, const f32* flo
 	return setPixelShaderConstant(name, floats, count);
 }
 
-bool CCgMaterialRenderer::setVertexShaderConstant(const c8* name, const bool* bools, int count)
-{
-	return setPixelShaderConstant(name, bools, count);
-}
-
 bool CCgMaterialRenderer::setVertexShaderConstant(const c8* name, const s32* ints, int count)
 {
 	return setPixelShaderConstant(name, ints, count);
@@ -244,23 +239,6 @@ bool CCgMaterialRenderer::setPixelShaderConstant(const c8* name, const s32* ints
 	return Status;
 }
 
-bool CCgMaterialRenderer::setPixelShaderConstant(const c8* name, const bool* bools, int count)
-{
-	bool Status = false;
-
-	for(unsigned int i = 0; i < UniformInfo.size(); ++i)
-	{
-		if(UniformInfo[i]->getName() == name)
-		{
-			UniformInfo[i]->update(bools, Material);
-
-			Status = true;
-		}
-	}
-
-	return Status;
-}
-
 void CCgMaterialRenderer::getUniformList()
 {
 	for(unsigned int i = 0; i < UniformInfo.size(); ++i)
diff --git a/source/Irrlicht/CCgMaterialRenderer.h b/source/Irrlicht/CCgMaterialRenderer.h
index 8213f78b..e1b02262 100644
--- a/source/Irrlicht/CCgMaterialRenderer.h
+++ b/source/Irrlicht/CCgMaterialRenderer.h
@@ -140,11 +140,9 @@ public:
 
 	virtual void setBasicRenderStates(const SMaterial& material, const SMaterial& lastMaterial, bool resetAllRenderstates) = 0;
 	virtual bool setVertexShaderConstant(const c8* name, const f32* floats, int count);
-	virtual bool setVertexShaderConstant(const c8* name, const bool* bools, int count);
 	virtual bool setVertexShaderConstant(const c8* name, const s32* ints, int count);
 	virtual void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1);
 	virtual bool setPixelShaderConstant(const c8* name, const f32* floats, int count);
-	virtual bool setPixelShaderConstant(const c8* name, const bool* bools, int count);
 	virtual bool setPixelShaderConstant(const c8* name, const s32* ints, int count);
 	virtual void setPixelShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1);
 	virtual IVideoDriver* getVideoDriver() = 0;
diff --git a/source/Irrlicht/CD3D8Driver.cpp b/source/Irrlicht/CD3D8Driver.cpp
index 9886b375..3f366bde 100644
--- a/source/Irrlicht/CD3D8Driver.cpp
+++ b/source/Irrlicht/CD3D8Driver.cpp
@@ -2186,14 +2186,6 @@ bool CD3D8Driver::setVertexShaderConstant(const c8* name, const f32* floats, int
 }
 
 
-//! Bool interface for the above.
-bool CD3D8Driver::setVertexShaderConstant(const c8* name, const bool* bools, int count)
-{
-	os::Printer::log("Cannot set constant, no HLSL supported in D3D8");
-	return false;
-}
-
-
 //! Int interface for the above.
 bool CD3D8Driver::setVertexShaderConstant(const c8* name, const s32* ints, int count)
 {
@@ -2210,14 +2202,6 @@ bool CD3D8Driver::setPixelShaderConstant(const c8* name, const f32* floats, int
 }
 
 
-//! Bool interface for the above.
-bool CD3D8Driver::setPixelShaderConstant(const c8* name, const bool* bools, int count)
-{
-	os::Printer::log("Cannot set constant, no HLSL supported in D3D8");
-	return false;
-}
-
-
 //! Int interface for the above.
 bool CD3D8Driver::setPixelShaderConstant(const c8* name, const s32* ints, int count)
 {
diff --git a/source/Irrlicht/CD3D8Driver.h b/source/Irrlicht/CD3D8Driver.h
index e9428a9f..81f1bec1 100644
--- a/source/Irrlicht/CD3D8Driver.h
+++ b/source/Irrlicht/CD3D8Driver.h
@@ -182,18 +182,12 @@ namespace video
 		//! Sets a constant for the vertex shader based on a name.
 		virtual bool setVertexShaderConstant(const c8* name, const f32* floats, int count);
 
-		//! Bool interface for the above.
-		virtual bool setVertexShaderConstant(const c8* name, const bool* bools, int count);
-
 		//! Int interface for the above.
 		virtual bool setVertexShaderConstant(const c8* name, const s32* ints, int count);
 
 		//! Sets a constant for the pixel shader based on a name.
 		virtual bool setPixelShaderConstant(const c8* name, const f32* floats, int count);
 
-		//! Bool interface for the above.
-		virtual bool setPixelShaderConstant(const c8* name, const bool* bools, int count);
-
 		//! Int interface for the above.
 		virtual bool setPixelShaderConstant(const c8* name, const s32* ints, int count);
 
diff --git a/source/Irrlicht/CD3D9Driver.cpp b/source/Irrlicht/CD3D9Driver.cpp
index 20840a7e..65545378 100644
--- a/source/Irrlicht/CD3D9Driver.cpp
+++ b/source/Irrlicht/CD3D9Driver.cpp
@@ -3100,19 +3100,6 @@ bool CD3D9Driver::setVertexShaderConstant(const c8* name, const f32* floats, int
 }
 
 
-//! Bool interface for the above.
-bool CD3D9Driver::setVertexShaderConstant(const c8* name, const bool* bools, int count)
-{
-	if (Material.MaterialType >= 0 && Material.MaterialType < (s32)MaterialRenderers.size())
-	{
-		CD3D9MaterialRenderer* r = (CD3D9MaterialRenderer*)MaterialRenderers[Material.MaterialType].Renderer;
-		return r->setVariable(true, name, bools, count);
-	}
-
-	return false;
-}
-
-
 //! Int interface for the above.
 bool CD3D9Driver::setVertexShaderConstant(const c8* name, const s32* ints, int count)
 {
@@ -3139,19 +3126,6 @@ bool CD3D9Driver::setPixelShaderConstant(const c8* name, const f32* floats, int
 }
 
 
-//! Bool interface for the above.
-bool CD3D9Driver::setPixelShaderConstant(const c8* name, const bool* bools, int count)
-{
-	if (Material.MaterialType >= 0 && Material.MaterialType < (s32)MaterialRenderers.size())
-	{
-		CD3D9MaterialRenderer* r = (CD3D9MaterialRenderer*)MaterialRenderers[Material.MaterialType].Renderer;
-		return r->setVariable(false, name, bools, count);
-	}
-
-	return false;
-}
-
-
 //! Int interface for the above.
 bool CD3D9Driver::setPixelShaderConstant(const c8* name, const s32* ints, int count)
 {
diff --git a/source/Irrlicht/CD3D9Driver.h b/source/Irrlicht/CD3D9Driver.h
index 095ae9d6..c9ebf63f 100644
--- a/source/Irrlicht/CD3D9Driver.h
+++ b/source/Irrlicht/CD3D9Driver.h
@@ -268,18 +268,12 @@ namespace video
 		//! Sets a constant for the vertex shader based on a name.
 		virtual bool setVertexShaderConstant(const c8* name, const f32* floats, int count);
 
-		//! Bool interface for the above.
-		virtual bool setVertexShaderConstant(const c8* name, const bool* bools, int count);
-
 		//! Int interface for the above.
 		virtual bool setVertexShaderConstant(const c8* name, const s32* ints, int count);
 
 		//! Sets a constant for the pixel shader based on a name.
 		virtual bool setPixelShaderConstant(const c8* name, const f32* floats, int count);
 
-		//! Bool interface for the above.
-		virtual bool setPixelShaderConstant(const c8* name, const bool* bools, int count);
-
 		//! Int interface for the above.
 		virtual bool setPixelShaderConstant(const c8* name, const s32* ints, int count);
 
diff --git a/source/Irrlicht/CD3D9HLSLMaterialRenderer.cpp b/source/Irrlicht/CD3D9HLSLMaterialRenderer.cpp
index 131bdf57..91ed08ca 100644
--- a/source/Irrlicht/CD3D9HLSLMaterialRenderer.cpp
+++ b/source/Irrlicht/CD3D9HLSLMaterialRenderer.cpp
@@ -304,45 +304,6 @@ bool CD3D9HLSLMaterialRenderer::setVariable(bool vertexShader, const c8* name,
 }
 
 
-bool CD3D9HLSLMaterialRenderer::setVariable(bool vertexShader, const c8* name,
-					const bool* bools, int count)
-{
-	LPD3DXCONSTANTTABLE tbl = vertexShader ? VSConstantsTable : PSConstantsTable;
-	if (!tbl)
-		return false;
-
-	// currently we only support top level parameters.
-	// Should be enough for the beginning. (TODO)
-
-	D3DXHANDLE hndl = tbl->GetConstantByName(NULL, name);
-	if (!hndl)
-	{
-		core::stringc s = "HLSL Variable to set not found: '";
-		s += name;
-		s += "'. Available variables are:";
-		os::Printer::log(s.c_str(), ELL_WARNING);
-		printHLSLVariables(tbl);
-		return false;
-	}
-
-	D3DXCONSTANT_DESC Description;
-	UINT ucount = 1;
-    tbl->GetConstantDesc(hndl, &Description, &ucount);
-
-	if(Description.RegisterSet != D3DXRS_SAMPLER)
-	{
-		HRESULT hr = tbl->SetBoolArray(pID3DDevice, hndl, (BOOL*)bools, count);
-		if (FAILED(hr))
-		{
-			os::Printer::log("Error setting bool array for HLSL variable", ELL_WARNING);
-			return false;
-		}
-	}
-
-	return true;
-}
-
-
 bool CD3D9HLSLMaterialRenderer::setVariable(bool vertexShader, const c8* name,
 					const s32* ints, int count)
 {
diff --git a/source/Irrlicht/CD3D9HLSLMaterialRenderer.h b/source/Irrlicht/CD3D9HLSLMaterialRenderer.h
index 2e051b7b..b515f6f5 100644
--- a/source/Irrlicht/CD3D9HLSLMaterialRenderer.h
+++ b/source/Irrlicht/CD3D9HLSLMaterialRenderer.h
@@ -51,9 +51,6 @@ public:
 	//! \param count: Amount of floats in array.
 	virtual bool setVariable(bool vertexShader, const c8* name, const f32* floats, int count);
 
-	//! Bool interface for the above.
-	virtual bool setVariable(bool vertexShader, const c8* name, const bool* bools, int count);
-
 	//! Int interface for the above.
 	virtual bool setVariable(bool vertexShader, const c8* name, const s32* ints, int count);
 
diff --git a/source/Irrlicht/CD3D9MaterialRenderer.h b/source/Irrlicht/CD3D9MaterialRenderer.h
index 16536617..9b8204d4 100644
--- a/source/Irrlicht/CD3D9MaterialRenderer.h
+++ b/source/Irrlicht/CD3D9MaterialRenderer.h
@@ -75,13 +75,6 @@ public:
 		return false;
 	}
 
-	//! Bool interface for the above.
-	virtual bool setVariable(bool vertexShader, const c8* name, const bool* bools, int count)
-	{
-		os::Printer::log("Invalid material to set variable in.");
-		return false;
-	}
-
 	//! Int interface for the above.
 	virtual bool setVariable(bool vertexShader, const c8* name, const s32* ints, int count)
 	{
diff --git a/source/Irrlicht/COpenGLDriver.cpp b/source/Irrlicht/COpenGLDriver.cpp
index 6fcbb5c1..b41c0f1c 100644
--- a/source/Irrlicht/COpenGLDriver.cpp
+++ b/source/Irrlicht/COpenGLDriver.cpp
@@ -3893,12 +3893,6 @@ bool COpenGLDriver::setVertexShaderConstant(const c8* name, const f32* floats, i
 	return setPixelShaderConstant(name, floats, count);
 }
 
-//! Bool interface for the above.
-bool COpenGLDriver::setVertexShaderConstant(const c8* name, const bool* bools, int count)
-{
-	return setPixelShaderConstant(name, bools, count);
-}
-
 //! Int interface for the above.
 bool COpenGLDriver::setVertexShaderConstant(const c8* name, const s32* ints, int count)
 {
@@ -3912,13 +3906,6 @@ bool COpenGLDriver::setPixelShaderConstant(const c8* name, const f32* floats, in
 	return false;
 }
 
-//! Bool interface for the above.
-bool COpenGLDriver::setPixelShaderConstant(const c8* name, const bool* bools, int count)
-{
-	os::Printer::log("Error: Please call services->setPixelShaderConstant(), not VideoDriver->setPixelShaderConstant().");
-	return false;
-}
-
 //! Int interface for the above.
 bool COpenGLDriver::setPixelShaderConstant(const c8* name, const s32* ints, int count)
 {
diff --git a/source/Irrlicht/COpenGLDriver.h b/source/Irrlicht/COpenGLDriver.h
index 67b1d94c..96544106 100644
--- a/source/Irrlicht/COpenGLDriver.h
+++ b/source/Irrlicht/COpenGLDriver.h
@@ -286,18 +286,12 @@ namespace video
 		//! Sets a constant for the vertex shader based on a name.
 		virtual bool setVertexShaderConstant(const c8* name, const f32* floats, int count);
 
-		//! Bool interface for the above.
-		virtual bool setVertexShaderConstant(const c8* name, const bool* bools, int count);
-
 		//! Int interface for the above.
 		virtual bool setVertexShaderConstant(const c8* name, const s32* ints, int count);
 
 		//! Sets a constant for the pixel shader based on a name.
 		virtual bool setPixelShaderConstant(const c8* name, const f32* floats, int count);
 
-		//! Bool interface for the above.
-		virtual bool setPixelShaderConstant(const c8* name, const bool* bools, int count);
-
 		//! Int interface for the above.
 		virtual bool setPixelShaderConstant(const c8* name, const s32* ints, int count);
 
diff --git a/source/Irrlicht/COpenGLSLMaterialRenderer.cpp b/source/Irrlicht/COpenGLSLMaterialRenderer.cpp
index 823e16dd..9867b649 100644
--- a/source/Irrlicht/COpenGLSLMaterialRenderer.cpp
+++ b/source/Irrlicht/COpenGLSLMaterialRenderer.cpp
@@ -500,11 +500,6 @@ bool COpenGLSLMaterialRenderer::setVertexShaderConstant(const c8* name, const f3
 	return setPixelShaderConstant(name, floats, count);
 }
 
-bool COpenGLSLMaterialRenderer::setVertexShaderConstant(const c8* name, const bool* bools, int count)
-{
-	return setPixelShaderConstant(name, bools, count);
-}
-
 bool COpenGLSLMaterialRenderer::setVertexShaderConstant(const c8* name, const s32* ints, int count)
 {
 	return setPixelShaderConstant(name, ints, count);
@@ -582,53 +577,6 @@ bool COpenGLSLMaterialRenderer::setPixelShaderConstant(const c8* name, const f32
 #endif
 }
 
-bool COpenGLSLMaterialRenderer::setPixelShaderConstant(const c8* name, const bool* bools, int count)
-{
-	u32 i;
-	const u32 num = UniformInfo.size();
-
-	for (i=0; i < num; ++i)
-	{
-		if (UniformInfo[i].name == name)
-			break;
-	}
-
-	if (i == num)
-		return false;
-
-#if defined(GL_VERSION_2_0)||defined(GL_ARB_shader_objects)
-	GLint Location=0;
-	if (Program2)
-		Location=Driver->extGlGetUniformLocation(Program2,name);
-	else
-		Location=Driver->extGlGetUniformLocationARB(Program,name);
-
-	bool status = true;
-
-	switch (UniformInfo[i].type)
-	{
-		case GL_BOOL:
-			Driver->extGlUniform1iv(Location, count, (GLint*)bools);
-			break;
-		case GL_BOOL_VEC2:
-			Driver->extGlUniform2iv(Location, count/2, (GLint*)bools);
-			break;
-		case GL_BOOL_VEC3:
-			Driver->extGlUniform3iv(Location, count/3, (GLint*)bools);
-			break;
-		case GL_BOOL_VEC4:
-			Driver->extGlUniform4iv(Location, count/4, (GLint*)bools);
-			break;
-		default:
-			status = false;
-			break;
-	}
-	return status;
-#else
-	return false;
-#endif
-}
-
 bool COpenGLSLMaterialRenderer::setPixelShaderConstant(const c8* name, const s32* ints, int count)
 {
 	u32 i;
diff --git a/source/Irrlicht/COpenGLSLMaterialRenderer.h b/source/Irrlicht/COpenGLSLMaterialRenderer.h
index ff711502..816b0a72 100644
--- a/source/Irrlicht/COpenGLSLMaterialRenderer.h
+++ b/source/Irrlicht/COpenGLSLMaterialRenderer.h
@@ -86,11 +86,9 @@ public:
 	// implementations for the render services
 	virtual void setBasicRenderStates(const SMaterial& material, const SMaterial& lastMaterial, bool resetAllRenderstates);
 	virtual bool setVertexShaderConstant(const c8* name, const f32* floats, int count);
-	virtual bool setVertexShaderConstant(const c8* name, const bool* bools, int count);
 	virtual bool setVertexShaderConstant(const c8* name, const s32* ints, int count);
 	virtual void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1);
 	virtual bool setPixelShaderConstant(const c8* name, const f32* floats, int count);
-	virtual bool setPixelShaderConstant(const c8* name, const bool* bools, int count);
 	virtual bool setPixelShaderConstant(const c8* name, const s32* ints, int count);
 	virtual void setPixelShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1);
 	virtual IVideoDriver* getVideoDriver();