diff --git a/include/Nazara/Renderer/Enums.hpp b/include/Nazara/Renderer/Enums.hpp
index a5760a454..4d1198391 100644
--- a/include/Nazara/Renderer/Enums.hpp
+++ b/include/Nazara/Renderer/Enums.hpp
@@ -240,6 +240,7 @@ enum nzShaderUniform
 	nzShaderUniform_ProjMatrix,
 	nzShaderUniform_SceneAmbient,
 	nzShaderUniform_TargetSize,
+	nzShaderUniform_VertexDepth,
 	nzShaderUniform_ViewMatrix,
 	nzShaderUniform_ViewProjMatrix,
 	nzShaderUniform_WorldMatrix,
diff --git a/src/Nazara/Graphics/ColorBackground.cpp b/src/Nazara/Graphics/ColorBackground.cpp
index e7732f8d4..0672cffba 100644
--- a/src/Nazara/Graphics/ColorBackground.cpp
+++ b/src/Nazara/Graphics/ColorBackground.cpp
@@ -13,7 +13,11 @@ namespace
 	NzRenderStates BuildRenderStates()
 	{
 		NzRenderStates states;
-		states.parameters[nzRendererParameter_DepthBuffer] = false;
+		states.depthFunc = nzRendererComparison_Equal;
+		states.faceCulling = nzFaceSide_Front;
+		states.parameters[nzRendererParameter_DepthBuffer] = true;
+		states.parameters[nzRendererParameter_DepthWrite] = false;
+		states.parameters[nzRendererParameter_FaceCulling] = true;
 
 		return states;
 	}
@@ -30,6 +34,8 @@ m_color(color)
 	params.fullscreenQuad.diffuseMapping = false;
 
 	m_program = NzShaderProgramManager::Get(params);
+	m_program->SendColor(m_program->GetUniformLocation(nzShaderUniform_MaterialDiffuse), m_color);
+	m_program->SendFloat(m_program->GetUniformLocation(nzShaderUniform_VertexDepth), 1.f);
 }
 
 void NzColorBackground::Draw(const NzScene* scene) const
@@ -38,8 +44,6 @@ void NzColorBackground::Draw(const NzScene* scene) const
 
 	static NzRenderStates states(BuildRenderStates());
 
-	m_program->SendColor(m_program->GetUniformLocation(nzShaderUniform_MaterialDiffuse), m_color);
-
 	NzRenderer::SetRenderStates(states);
 	NzRenderer::SetShaderProgram(m_program);
 
@@ -59,5 +63,6 @@ NzColor NzColorBackground::GetColor() const
 void NzColorBackground::SetColor(const NzColor& color)
 {
 	m_color = color;
+	m_program->SendColor(m_program->GetUniformLocation(nzShaderUniform_MaterialDiffuse), m_color);
 }
 
diff --git a/src/Nazara/Graphics/SkyboxBackground.cpp b/src/Nazara/Graphics/SkyboxBackground.cpp
index 20c2b8f05..a95a5d07f 100644
--- a/src/Nazara/Graphics/SkyboxBackground.cpp
+++ b/src/Nazara/Graphics/SkyboxBackground.cpp
@@ -47,28 +47,43 @@ namespace
 	{
 		const char* fragmentSource110 =
 		"#version 110\n"
+
 		"varying vec3 vTexCoord;\n"
+
 		"uniform samplerCube Skybox;\n"
+		"uniform float VertexDepth;\n"
+
 		"void main()\n"
 		"{\n"
 		"	gl_FragColor = textureCube(Skybox, vTexCoord);\n"
+		"	gl_FragDepth = VertexDepth;\n"
 		"}\n";
 
 		const char* fragmentSource140 =
 		"#version 140\n"
+
 		"in vec3 vTexCoord;\n"
+
 		"out vec4 RenderTarget0;\n"
+
 		"uniform samplerCube Skybox;\n"
+		"uniform float VertexDepth;\n"
+
 		"void main()\n"
 		"{\n"
 		"	RenderTarget0 = texture(Skybox, vTexCoord);\n"
+		"	gl_FragDepth = VertexDepth;\n"
 		"}\n";
 
 		const char* vertexSource110 =
 		"#version 110\n"
+
 		"attribute vec3 VertexPosition;\n"
+
 		"varying vec3 vTexCoord;\n"
+
 		"uniform mat4 WorldViewProjMatrix;\n"
+
 		"void main()\n"
 		"{\n"
 		"    gl_Position = WorldViewProjMatrix * vec4(VertexPosition, 1.0);\n"
@@ -77,9 +92,13 @@ namespace
 
 		const char* vertexSource140 =
 		"#version 140\n"
+
 		"in vec3 VertexPosition;\n"
+
 		"out vec3 vTexCoord;\n"
+
 		"uniform mat4 WorldViewProjMatrix;\n"
+
 		"void main()\n"
 		"{\n"
 		"    gl_Position = WorldViewProjMatrix * vec4(VertexPosition, 1.0);\n"
@@ -110,15 +129,19 @@ namespace
 			return nullptr;
 		}
 
+		program->SendInteger(program->GetUniformLocation("Skybox"), 0);
+
 		return program.release();
 	}
 
 	NzRenderStates BuildRenderStates()
 	{
 		NzRenderStates states;
-		states.parameters[nzRendererParameter_DepthBuffer] = false;
+		states.depthFunc = nzRendererComparison_Equal;
+		states.faceCulling = nzFaceSide_Front;
+		states.parameters[nzRendererParameter_DepthBuffer] = true;
+		states.parameters[nzRendererParameter_DepthWrite] = false;
 		states.parameters[nzRendererParameter_FaceCulling] = true;
-		states.faceCulling = nzFaceCulling_Front;
 
 		return states;
 	}
@@ -152,7 +175,6 @@ namespace
 	static NzIndexBuffer* s_indexBuffer = nullptr;
 	static NzShaderProgram* s_program = nullptr;
 	static NzVertexBuffer* s_vertexBuffer = nullptr;
-	static unsigned int s_skyboxLocation;
 }
 
 NzSkyboxBackground::NzSkyboxBackground()
@@ -161,10 +183,7 @@ NzSkyboxBackground::NzSkyboxBackground()
 		s_indexBuffer = BuildIndexBuffer();
 
 	if (!s_program)
-	{
 		s_program = BuildProgram();
-		s_skyboxLocation = s_program->GetUniformLocation("Skybox");
-	}
 
 	if (!s_vertexBuffer)
 		s_vertexBuffer = BuildVertexBuffer();
@@ -197,8 +216,6 @@ void NzSkyboxBackground::Draw(const NzScene* scene) const
 {
 	static NzRenderStates states(BuildRenderStates());
 
-	s_program->SendInteger(s_skyboxLocation, 0);
-
 	NzAbstractViewer* viewer = scene->GetViewer();
 
 	NzMatrix4f skyboxMatrix(viewer->GetViewMatrix());
diff --git a/src/Nazara/Graphics/TextureBackground.cpp b/src/Nazara/Graphics/TextureBackground.cpp
index e452d16b2..921c4666a 100644
--- a/src/Nazara/Graphics/TextureBackground.cpp
+++ b/src/Nazara/Graphics/TextureBackground.cpp
@@ -13,7 +13,11 @@ namespace
 	NzRenderStates BuildRenderStates()
 	{
 		NzRenderStates states;
-		states.parameters[nzRendererParameter_DepthBuffer] = false;
+		states.depthFunc = nzRendererComparison_Equal;
+		states.faceCulling = nzFaceSide_Front;
+		states.parameters[nzRendererParameter_DepthBuffer] = true;
+		states.parameters[nzRendererParameter_DepthWrite] = false;
+		states.parameters[nzRendererParameter_FaceCulling] = true;
 
 		return states;
 	}
@@ -29,6 +33,9 @@ NzTextureBackground::NzTextureBackground()
 	params.fullscreenQuad.diffuseMapping = true;
 
 	m_program = NzShaderProgramManager::Get(params);
+	m_program->SendColor(m_program->GetUniformLocation(nzShaderUniform_MaterialDiffuse), NzColor::White);
+	m_program->SendFloat(m_program->GetUniformLocation(nzShaderUniform_VertexDepth), 1.f);
+	m_program->SendInteger(m_program->GetUniformLocation(nzShaderUniform_MaterialDiffuseMap), 0);
 }
 
 NzTextureBackground::NzTextureBackground(NzTexture* texture) :
@@ -43,9 +50,6 @@ void NzTextureBackground::Draw(const NzScene* scene) const
 
 	static NzRenderStates states(BuildRenderStates());
 
-	m_program->SendColor(m_program->GetUniformLocation(nzShaderUniform_MaterialDiffuse), NzColor::White);
-	m_program->SendInteger(m_program->GetUniformLocation(nzShaderUniform_MaterialDiffuseMap), 0);
-
 	NzRenderer::SetRenderStates(states);
 	NzRenderer::SetShaderProgram(m_program);
 	NzRenderer::SetTexture(0, m_texture);
diff --git a/src/Nazara/Renderer/GLSLProgram.cpp b/src/Nazara/Renderer/GLSLProgram.cpp
index 7749763a8..641bd4d82 100644
--- a/src/Nazara/Renderer/GLSLProgram.cpp
+++ b/src/Nazara/Renderer/GLSLProgram.cpp
@@ -627,6 +627,7 @@ bool NzGLSLProgram::PostLinkage()
 		CacheUniform(ProjMatrix);
 		CacheUniform(SceneAmbient);
 		CacheUniform(TargetSize);
+		CacheUniform(VertexDepth);
 		CacheUniform(ViewMatrix);
 		CacheUniform(ViewProjMatrix);
 		CacheUniform(WorldMatrix);
diff --git a/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert b/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert
index 1ebe209a4..b61607ce0 100644
--- a/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert
+++ b/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert
@@ -13,11 +13,12 @@ uniform sampler2D MaterialAlphaMap;
 uniform float MaterialAlphaThreshold;
 uniform vec4 MaterialDiffuse;
 uniform sampler2D MaterialDiffuseMap;
+uniform float VertexDepth;
 
 /********************Fonctions********************/
 void main()
 {
-	gl_Position = vec4(VertexPosition, 0.0, 1.0);
+	gl_Position = vec4(VertexPosition, VertexDepth, 1.0);
 
 #if ALPHA_MAPPING || DIFFUSE_MAPPING
 	#if FLAG_FLIP_UVS
diff --git a/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert.h b/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert.h
index 183242f5e..42c8b5ce0 100644
--- a/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert.h
+++ b/src/Nazara/Renderer/Shaders/FullscreenQuad/compatibility.vert.h
@@ -1 +1 @@
-35,105,102,32,70,76,65,71,95,68,69,70,69,82,82,69,68,10,9,35,101,114,114,111,114,32,68,101,102,101,114,114,101,100,32,83,104,97,100,105,110,103,32,110,101,101,100,115,32,99,111,114,101,32,112,114,111,102,105,108,101,10,35,101,110,100,105,102,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,69,110,116,114,97,110,116,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,118,97,114,121,105,110,103,32,118,101,99,50,32,86,101,114,116,101,120,80,111,115,105,116,105,111,110,59,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,83,111,114,116,97,110,116,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,118,97,114,121,105,110,103,32,118,101,99,50,32,118,84,101,120,67,111,111,114,100,59,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,85,110,105,102,111,114,109,101,115,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,117,110,105,102,111,114,109,32,115,97,109,112,108,101,114,50,68,32,77,97,116,101,114,105,97,108,65,108,112,104,97,77,97,112,59,10,117,110,105,102,111,114,109,32,102,108,111,97,116,32,77,97,116,101,114,105,97,108,65,108,112,104,97,84,104,114,101,115,104,111,108,100,59,10,117,110,105,102,111,114,109,32,118,101,99,52,32,77,97,116,101,114,105,97,108,68,105,102,102,117,115,101,59,10,117,110,105,102,111,114,109,32,115,97,109,112,108,101,114,50,68,32,77,97,116,101,114,105,97,108,68,105,102,102,117,115,101,77,97,112,59,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,70,111,110,99,116,105,111,110,115,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,118,111,105,100,32,109,97,105,110,40,41,10,123,10,9,103,108,95,80,111,115,105,116,105,111,110,32,61,32,118,101,99,52,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,44,32,48,46,48,44,32,49,46,48,41,59,10,10,35,105,102,32,65,76,80,72,65,95,77,65,80,80,73,78,71,32,124,124,32,68,73,70,70,85,83,69,95,77,65,80,80,73,78,71,10,9,35,105,102,32,70,76,65,71,95,70,76,73,80,95,85,86,83,10,9,118,84,101,120,67,111,111,114,100,32,61,32,118,101,99,50,40,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,120,32,43,32,49,46,48,41,42,48,46,53,44,32,48,46,53,32,45,32,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,121,42,48,46,53,59,10,9,35,101,108,115,101,10,9,118,84,101,120,67,111,111,114,100,32,61,32,118,101,99,50,40,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,120,32,43,32,49,46,48,41,42,48,46,53,44,32,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,121,32,43,32,49,46,48,41,42,48,46,53,41,59,10,9,35,101,110,100,105,102,32,47,47,32,70,76,65,71,95,70,76,73,80,95,85,86,83,10,35,101,110,100,105,102,10,125,10,
\ No newline at end of file
+35,105,102,32,70,76,65,71,95,68,69,70,69,82,82,69,68,10,9,35,101,114,114,111,114,32,68,101,102,101,114,114,101,100,32,83,104,97,100,105,110,103,32,110,101,101,100,115,32,99,111,114,101,32,112,114,111,102,105,108,101,10,35,101,110,100,105,102,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,69,110,116,114,97,110,116,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,118,97,114,121,105,110,103,32,118,101,99,50,32,86,101,114,116,101,120,80,111,115,105,116,105,111,110,59,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,83,111,114,116,97,110,116,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,118,97,114,121,105,110,103,32,118,101,99,50,32,118,84,101,120,67,111,111,114,100,59,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,85,110,105,102,111,114,109,101,115,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,117,110,105,102,111,114,109,32,115,97,109,112,108,101,114,50,68,32,77,97,116,101,114,105,97,108,65,108,112,104,97,77,97,112,59,10,117,110,105,102,111,114,109,32,102,108,111,97,116,32,77,97,116,101,114,105,97,108,65,108,112,104,97,84,104,114,101,115,104,111,108,100,59,10,117,110,105,102,111,114,109,32,118,101,99,52,32,77,97,116,101,114,105,97,108,68,105,102,102,117,115,101,59,10,117,110,105,102,111,114,109,32,115,97,109,112,108,101,114,50,68,32,77,97,116,101,114,105,97,108,68,105,102,102,117,115,101,77,97,112,59,10,117,110,105,102,111,114,109,32,102,108,111,97,116,32,86,101,114,116,101,120,68,101,112,116,104,59,10,10,47,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,70,111,110,99,116,105,111,110,115,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,47,10,118,111,105,100,32,109,97,105,110,40,41,10,123,10,9,103,108,95,80,111,115,105,116,105,111,110,32,61,32,118,101,99,52,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,44,32,86,101,114,116,101,120,68,101,112,116,104,44,32,49,46,48,41,59,10,10,35,105,102,32,65,76,80,72,65,95,77,65,80,80,73,78,71,32,124,124,32,68,73,70,70,85,83,69,95,77,65,80,80,73,78,71,10,9,35,105,102,32,70,76,65,71,95,70,76,73,80,95,85,86,83,10,9,118,84,101,120,67,111,111,114,100,32,61,32,118,101,99,50,40,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,120,32,43,32,49,46,48,41,42,48,46,53,44,32,48,46,53,32,45,32,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,121,42,48,46,53,59,10,9,35,101,108,115,101,10,9,118,84,101,120,67,111,111,114,100,32,61,32,118,101,99,50,40,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,120,32,43,32,49,46,48,41,42,48,46,53,44,32,40,86,101,114,116,101,120,80,111,115,105,116,105,111,110,46,121,32,43,32,49,46,48,41,42,48,46,53,41,59,10,9,35,101,110,100,105,102,32,47,47,32,70,76,65,71,95,70,76,73,80,95,85,86,83,10,35,101,110,100,105,102,10,125,10,
\ No newline at end of file
diff --git a/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert b/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert
index b86136ef2..38f43fe07 100644
--- a/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert
+++ b/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert
@@ -13,11 +13,12 @@ uniform sampler2D MaterialAlphaMap;
 uniform float MaterialAlphaThreshold;
 uniform vec4 MaterialDiffuse;
 uniform sampler2D MaterialDiffuseMap;
+uniform float VertexDepth;
 
 /********************Fonctions********************/
 void main()
 {
-	gl_Position = vec4(VertexPosition, 0.0, 1.0);
+	gl_Position = vec4(VertexPosition, VertexDepth, 1.0);
 
 #if ALPHA_MAPPING || DIFFUSE_MAPPING
 	#if FLAG_FLIP_UVS
diff --git a/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert.h b/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert.h
index 764b9629b..08bf9058f 100644
--- a/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert.h
+++ b/src/Nazara/Renderer/Shaders/FullscreenQuad/core.vert.h
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file