Initial commit with PS4 and XBone stuff trimmed.

18 files changed, 1329 insertions, 0 deletions

diff --git a/src/shader/Attributes.fxh b/src/shader/Attributes.fxh
new file mode 100644
index 0000000..d887f8c
--- /dev/null
+++ b/src/shader/Attributes.fxh
@@ -0,0 +1,403 @@
+/*
+ * This code contains NVIDIA Confidential Information and is disclosed 
+ * under the Mutual Non-Disclosure Agreement. 
+ * 
+ * Notice 
+ * ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+ * NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+ * THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+ * MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+ * 
+ * NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+ * information or for any infringement of patents or other rights of third parties that may 
+ * result from its use. No license is granted by implication or otherwise under any patent 
+ * or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+ * expressly authorized by NVIDIA.  Details are subject to change without notice. 
+ * This code supersedes and replaces all information previously supplied. 
+ * NVIDIA Corporation products are not authorized for use as critical 
+ * components in life support devices or systems without express written approval of 
+ * NVIDIA Corporation. 
+ * 
+ * Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+ * 
+ * NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+ * rights in and to this software and related documentation and any modifications thereto.
+ * Any use, reproduction, disclosure or distribution of this software and related
+ * documentation without an express license agreement from NVIDIA Corporation is
+ * strictly prohibited.
+ */
+
+#ifndef _GFSDK_WAVEWORKS_ATTRIBUTES_FX
+#define _GFSDK_WAVEWORKS_ATTRIBUTES_FX
+
+/*
+ *
+ *
+ */
+
+#include "GFSDK_WaveWorks_Common.fxh"
+
+/*
+ *
+ *
+ */
+
+#if defined(GFSDK_WAVEWORKS_SM3) || defined(GFSDK_WAVEWORKS_GL)
+	#define GFSDK_WAVEWORKS_BEGIN_ATTR_VS_CBUFFER(Label)
+	#define GFSDK_WAVEWORKS_END_ATTR_VS_CBUFFER
+	#define GFSDK_WAVEWORKS_BEGIN_ATTR_PS_CBUFFER(Label) 
+	#define GFSDK_WAVEWORKS_END_ATTR_PS_CBUFFER
+#endif
+
+
+#if defined( GFSDK_WAVEWORKS_USE_TESSELLATION )
+	#define GFSDK_WAVEWORKS_BEGIN_ATTR_DISPLACEMENT_CBUFFER(Label) GFSDK_WAVEWORKS_BEGIN_ATTR_DS_CBUFFER(Label)
+	#define GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_CONSTANT(Type,Label,Regoff) GFSDK_WAVEWORKS_DECLARE_ATTR_DS_CONSTANT(Type,Label,Regoff) 
+	#define GFSDK_WAVEWORKS_END_ATTR_DISPLACEMENT_CBUFFER GFSDK_WAVEWORKS_END_ATTR_DS_CBUFFER
+	#define GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER(SampLabel,TexLabel,Regoff) GFSDK_WAVEWORKS_DECLARE_ATTR_DS_SAMPLER(SampLabel,TexLabel,Regoff)
+	#define GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER_TEXTUREARRAY(SampLabel,TexLabel,Regoff) GFSDK_WAVEWORKS_DECLARE_ATTR_DS_SAMPLER_TEXTUREARRAY(SampLabel,TexLabel,Regoff)
+#else
+	#define GFSDK_WAVEWORKS_BEGIN_ATTR_DISPLACEMENT_CBUFFER(Label) GFSDK_WAVEWORKS_BEGIN_ATTR_VS_CBUFFER(Label)
+	#define GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_CONSTANT(Type,Label,Regoff)  GFSDK_WAVEWORKS_DECLARE_ATTR_VS_CONSTANT(Type,Label,Regoff) 
+	#define GFSDK_WAVEWORKS_END_ATTR_DISPLACEMENT_CBUFFER GFSDK_WAVEWORKS_END_ATTR_VS_CBUFFER
+	#define GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER(SampLabel,TexLabel,Regoff) GFSDK_WAVEWORKS_DECLARE_ATTR_VS_SAMPLER(SampLabel,TexLabel,Regoff)
+	#define GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER_TEXTUREARRAY(SampLabel,TexLabel,Regoff) GFSDK_WAVEWORKS_DECLARE_ATTR_VS_SAMPLER_TEXTUREARRAY(SampLabel,TexLabel,Regoff)
+#endif
+	
+GFSDK_WAVEWORKS_BEGIN_ATTR_DISPLACEMENT_CBUFFER(nvsf_attr_vs_buffer)
+GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_CONSTANT(float3, nvsf_g_WorldEye, 0)
+#if defined( GFSDK_WAVEWORKS_GL )
+	GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_CONSTANT(float, nvsf_g_UseTextureArrays, 1)
+#else
+	GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_CONSTANT(float, nvsf_g_Pad1, 1)
+#endif
+GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_CONSTANT(float4, nvsf_g_UVScaleCascade0123, 2)
+GFSDK_WAVEWORKS_END_ATTR_DISPLACEMENT_CBUFFER
+
+GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER(nvsf_g_samplerDisplacementMap0, nvsf_g_textureDisplacementMap0, 0)
+GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER(nvsf_g_samplerDisplacementMap1, nvsf_g_textureDisplacementMap1, 1)
+GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER(nvsf_g_samplerDisplacementMap2, nvsf_g_textureDisplacementMap2, 2)
+GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER(nvsf_g_samplerDisplacementMap3, nvsf_g_textureDisplacementMap3, 3)
+
+#if defined( GFSDK_WAVEWORKS_GL )
+	GFSDK_WAVEWORKS_DECLARE_ATTR_DISPLACEMENT_SAMPLER_TEXTUREARRAY(nvsf_g_samplerDisplacementMapTextureArray, nvsf_g_textureArrayDisplacementMap, 4)
+#endif
+
+GFSDK_WAVEWORKS_BEGIN_ATTR_PS_CBUFFER(nvsf_attr_ps_buffer)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_TexelLength_x2_PS, 0)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade1Scale_PS, 1)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade1TexelScale_PS, 2)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade1UVOffset_PS, 3)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade2Scale_PS, 4)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade2TexelScale_PS, 5)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade2UVOffset_PS, 6)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade3Scale_PS, 7)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade3TexelScale_PS, 8)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_CONSTANT(float, nvsf_g_Cascade3UVOffset_PS, 9)
+GFSDK_WAVEWORKS_END_ATTR_PS_CBUFFER
+
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_SAMPLER(nvsf_g_samplerGradientMap0, nvsf_g_textureGradientMap0, 0)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_SAMPLER(nvsf_g_samplerGradientMap1, nvsf_g_textureGradientMap1, 1)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_SAMPLER(nvsf_g_samplerGradientMap2, nvsf_g_textureGradientMap2, 2)
+GFSDK_WAVEWORKS_DECLARE_ATTR_PS_SAMPLER(nvsf_g_samplerGradientMap3, nvsf_g_textureGradientMap3, 3)
+
+#if defined( GFSDK_WAVEWORKS_GL )
+	GFSDK_WAVEWORKS_DECLARE_ATTR_PS_SAMPLER_TEXTUREARRAY(nvsf_g_samplerGradientMapTextureArray, nvsf_g_textureArrayGradientMap, 4)
+#endif
+
+struct GFSDK_WAVEWORKS_INTERPOLATED_VERTEX_OUTPUT
+{
+    float4 nvsf_tex_coord_cascade01			SEMANTIC(TEXCOORD0);
+    float4 nvsf_tex_coord_cascade23			SEMANTIC(TEXCOORD1);
+    float4 nvsf_blend_factor_cascade0123	SEMANTIC(TEXCOORD2);
+    float3 nvsf_eye_vec						SEMANTIC(TEXCOORD3);
+};
+
+struct GFSDK_WAVEWORKS_VERTEX_OUTPUT
+{
+    centroid GFSDK_WAVEWORKS_INTERPOLATED_VERTEX_OUTPUT interp;
+    float3 pos_world;
+    float3 pos_world_undisplaced;
+    float3 world_displacement;
+};
+
+GFSDK_WAVEWORKS_VERTEX_OUTPUT GFSDK_WaveWorks_GetDisplacedVertex(GFSDK_WAVEWORKS_VERTEX_INPUT In)
+{
+	// Get starting position and distance to camera
+	float3 nvsf_pos_world_undisplaced = GFSDK_WaveWorks_GetUndisplacedVertexWorldPosition(In);
+	float  nvsf_distance = length(nvsf_g_WorldEye - nvsf_pos_world_undisplaced);
+	
+	// UVs
+	float2 nvsf_uv_world_cascade0 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.x;
+	float2 nvsf_uv_world_cascade1 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.y;
+	float2 nvsf_uv_world_cascade2 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.z;
+	float2 nvsf_uv_world_cascade3 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.w;
+	
+	// cascade blend factors
+	float4 nvsf_blendfactors;
+	float4 nvsf_cascade_spatial_size = 1.0/nvsf_g_UVScaleCascade0123.xyzw;
+	nvsf_blendfactors.x = 1.0;
+	nvsf_blendfactors.yzw = saturate(0.25*(nvsf_cascade_spatial_size.yzw*24.0-nvsf_distance)/nvsf_cascade_spatial_size.yzw);
+	nvsf_blendfactors.yzw *= nvsf_blendfactors.yzw;
+
+
+	// Displacement map
+	#if defined(GFSDK_WAVEWORKS_GL)
+		float3 nvsf_displacement;
+		if(nvsf_g_UseTextureArrays > 0)
+		{
+			nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade0, 0.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade1, 1.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade2, 2.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade3, 3.0), 0).xyz;
+		}
+		else
+		{
+			nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureDisplacementMap0, nvsf_g_samplerDisplacementMap0, nvsf_uv_world_cascade0, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureDisplacementMap1, nvsf_g_samplerDisplacementMap1, nvsf_uv_world_cascade1, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureDisplacementMap2, nvsf_g_samplerDisplacementMap2, nvsf_uv_world_cascade2, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureDisplacementMap3, nvsf_g_samplerDisplacementMap3, nvsf_uv_world_cascade3, 0).xyz;
+		}
+	#else
+		float3 nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureDisplacementMap0, nvsf_g_samplerDisplacementMap0, nvsf_uv_world_cascade0, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureDisplacementMap1, nvsf_g_samplerDisplacementMap1, nvsf_uv_world_cascade1, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureDisplacementMap2, nvsf_g_samplerDisplacementMap2, nvsf_uv_world_cascade2, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureDisplacementMap3, nvsf_g_samplerDisplacementMap3, nvsf_uv_world_cascade3, 0).xyz;
+	#endif
+
+	float3 nvsf_pos_world = nvsf_pos_world_undisplaced + nvsf_displacement;
+
+	// Output
+	GFSDK_WAVEWORKS_VERTEX_OUTPUT Output;
+	Output.interp.nvsf_eye_vec = nvsf_g_WorldEye - nvsf_pos_world;
+	Output.interp.nvsf_tex_coord_cascade01.xy = nvsf_uv_world_cascade0;
+	Output.interp.nvsf_tex_coord_cascade01.zw = nvsf_uv_world_cascade1;
+	Output.interp.nvsf_tex_coord_cascade23.xy = nvsf_uv_world_cascade2;
+	Output.interp.nvsf_tex_coord_cascade23.zw = nvsf_uv_world_cascade3;
+	Output.interp.nvsf_blend_factor_cascade0123 = nvsf_blendfactors;
+	Output.pos_world = nvsf_pos_world;
+	Output.pos_world_undisplaced = nvsf_pos_world_undisplaced;
+	Output.world_displacement = nvsf_displacement;
+	return Output; 
+}
+
+GFSDK_WAVEWORKS_VERTEX_OUTPUT GFSDK_WaveWorks_GetDisplacedVertexAfterTessellation(float4 In0, float4 In1, float4 In2, float3 BarycentricCoords)
+{
+	// Get starting position
+	float3 nvsf_tessellated_ws_position =	In0.xyz * BarycentricCoords.x + 
+											In1.xyz * BarycentricCoords.y + 
+											In2.xyz * BarycentricCoords.z;
+	float3 nvsf_pos_world_undisplaced = nvsf_tessellated_ws_position;
+	
+
+	// blend factors for cascades	
+	float4 nvsf_blendfactors;
+	float nvsf_distance = length(nvsf_g_WorldEye - nvsf_pos_world_undisplaced);
+	float4 nvsf_cascade_spatial_size = 1.0/nvsf_g_UVScaleCascade0123.xyzw;
+	nvsf_blendfactors.x = 1.0;
+	nvsf_blendfactors.yzw = saturate(0.25*(nvsf_cascade_spatial_size.yzw*24.0-nvsf_distance)/nvsf_cascade_spatial_size.yzw);
+	nvsf_blendfactors.yzw *= nvsf_blendfactors.yzw;
+
+	// UVs
+	float2 nvsf_uv_world_cascade0 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.x;
+	float2 nvsf_uv_world_cascade1 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.y;
+	float2 nvsf_uv_world_cascade2 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.z;
+	float2 nvsf_uv_world_cascade3 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.w;
+
+	// Displacement map
+	#if defined(GFSDK_WAVEWORKS_GL)
+		float3 nvsf_displacement;
+		if(nvsf_g_UseTextureArrays > 0)
+		{
+			nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade0, 0.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade1, 1.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade2, 2.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade3, 3.0), 0).xyz;
+		}
+		else
+		{
+			nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureDisplacementMap0, nvsf_g_samplerDisplacementMap0, nvsf_uv_world_cascade0, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureDisplacementMap1, nvsf_g_samplerDisplacementMap1, nvsf_uv_world_cascade1, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureDisplacementMap2, nvsf_g_samplerDisplacementMap2, nvsf_uv_world_cascade2, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureDisplacementMap3, nvsf_g_samplerDisplacementMap3, nvsf_uv_world_cascade3, 0).xyz;
+		}
+	#else
+		float3 nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureDisplacementMap0, nvsf_g_samplerDisplacementMap0, nvsf_uv_world_cascade0, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureDisplacementMap1, nvsf_g_samplerDisplacementMap1, nvsf_uv_world_cascade1, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureDisplacementMap2, nvsf_g_samplerDisplacementMap2, nvsf_uv_world_cascade2, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureDisplacementMap3, nvsf_g_samplerDisplacementMap3, nvsf_uv_world_cascade3, 0).xyz;
+	#endif
+
+	float3 nvsf_pos_world = nvsf_pos_world_undisplaced + nvsf_displacement;
+	
+	// Output
+	GFSDK_WAVEWORKS_VERTEX_OUTPUT Output;
+	Output.interp.nvsf_eye_vec = nvsf_g_WorldEye - nvsf_pos_world;
+	Output.interp.nvsf_tex_coord_cascade01.xy = nvsf_uv_world_cascade0;
+	Output.interp.nvsf_tex_coord_cascade01.zw = nvsf_uv_world_cascade1;
+	Output.interp.nvsf_tex_coord_cascade23.xy = nvsf_uv_world_cascade2;
+	Output.interp.nvsf_tex_coord_cascade23.zw = nvsf_uv_world_cascade3;
+	Output.interp.nvsf_blend_factor_cascade0123 = nvsf_blendfactors;
+	Output.pos_world = nvsf_pos_world;
+	Output.pos_world_undisplaced = nvsf_pos_world_undisplaced;
+	Output.world_displacement = nvsf_displacement;
+	return Output; 
+}
+
+GFSDK_WAVEWORKS_VERTEX_OUTPUT GFSDK_WaveWorks_GetDisplacedVertexAfterTessellationQuad(float4 In0, float4 In1, float4 In2, float4 In3, float2 UV)
+{
+	// Get starting position
+	float3 nvsf_tessellated_ws_position =	In2.xyz*UV.x*UV.y + 
+											In0.xyz*(1.0-UV.x)*UV.y + 
+											In1.xyz*(1.0-UV.x)*(1.0-UV.y) + 
+											In3.xyz*UV.x*(1.0-UV.y);
+	float3 nvsf_pos_world_undisplaced = nvsf_tessellated_ws_position;
+	
+	// blend factors for cascades	
+	float4 nvsf_blendfactors;
+	float nvsf_distance = length(nvsf_g_WorldEye - nvsf_pos_world_undisplaced);
+	float4 nvsf_cascade_spatial_size = 1.0/nvsf_g_UVScaleCascade0123.xyzw;
+	nvsf_blendfactors.x = 1.0;
+	nvsf_blendfactors.yzw = saturate(0.25*(nvsf_cascade_spatial_size.yzw*24.0-nvsf_distance)/nvsf_cascade_spatial_size.yzw);
+	nvsf_blendfactors.yzw *= nvsf_blendfactors.yzw;
+
+	// UVs
+	float2 nvsf_uv_world_cascade0 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.x;
+	float2 nvsf_uv_world_cascade1 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.y;
+	float2 nvsf_uv_world_cascade2 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.z;
+	float2 nvsf_uv_world_cascade3 = nvsf_pos_world_undisplaced.xy * nvsf_g_UVScaleCascade0123.w;
+
+	// Displacement map
+	#if defined(GFSDK_WAVEWORKS_GL)
+		float3 nvsf_displacement;
+		if(nvsf_g_UseTextureArrays > 0)
+		{
+			nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade0, 0.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade1, 1.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade2, 2.0), 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureArrayDisplacementMap, nvsf_g_samplerDisplacementMapTextureArray, vec3(nvsf_uv_world_cascade3, 3.0), 0).xyz;
+		}
+		else
+		{
+			nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureDisplacementMap0, nvsf_g_samplerDisplacementMap0, nvsf_uv_world_cascade0, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureDisplacementMap1, nvsf_g_samplerDisplacementMap1, nvsf_uv_world_cascade1, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureDisplacementMap2, nvsf_g_samplerDisplacementMap2, nvsf_uv_world_cascade2, 0).xyz;
+			nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureDisplacementMap3, nvsf_g_samplerDisplacementMap3, nvsf_uv_world_cascade3, 0).xyz;
+		}
+	#else
+		float3 nvsf_displacement =  nvsf_blendfactors.x * SampleTex2Dlod(nvsf_g_textureDisplacementMap0, nvsf_g_samplerDisplacementMap0, nvsf_uv_world_cascade0, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.y==0? float3(0,0,0) : nvsf_blendfactors.y * SampleTex2Dlod(nvsf_g_textureDisplacementMap1, nvsf_g_samplerDisplacementMap1, nvsf_uv_world_cascade1, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.z==0? float3(0,0,0) : nvsf_blendfactors.z * SampleTex2Dlod(nvsf_g_textureDisplacementMap2, nvsf_g_samplerDisplacementMap2, nvsf_uv_world_cascade2, 0).xyz;
+			   nvsf_displacement += nvsf_blendfactors.w==0? float3(0,0,0) : nvsf_blendfactors.w * SampleTex2Dlod(nvsf_g_textureDisplacementMap3, nvsf_g_samplerDisplacementMap3, nvsf_uv_world_cascade3, 0).xyz;
+	#endif
+
+	float3 nvsf_pos_world = nvsf_pos_world_undisplaced + nvsf_displacement;
+	
+	// Output
+	GFSDK_WAVEWORKS_VERTEX_OUTPUT Output;
+	Output.interp.nvsf_eye_vec = nvsf_g_WorldEye - nvsf_pos_world;
+	Output.interp.nvsf_tex_coord_cascade01.xy = nvsf_uv_world_cascade0;
+	Output.interp.nvsf_tex_coord_cascade01.zw = nvsf_uv_world_cascade1;
+	Output.interp.nvsf_tex_coord_cascade23.xy = nvsf_uv_world_cascade2;
+	Output.interp.nvsf_tex_coord_cascade23.zw = nvsf_uv_world_cascade3;
+	Output.interp.nvsf_blend_factor_cascade0123 = nvsf_blendfactors;
+	Output.pos_world = nvsf_pos_world;
+	Output.pos_world_undisplaced = nvsf_pos_world_undisplaced;
+	Output.world_displacement = nvsf_displacement;
+	return Output; 
+}
+
+struct GFSDK_WAVEWORKS_SURFACE_ATTRIBUTES
+{
+	float3 normal;
+	float3 eye_dir;
+	float foam_surface_folding;
+	float foam_turbulent_energy;
+	float foam_wave_hats;
+};
+
+GFSDK_WAVEWORKS_SURFACE_ATTRIBUTES GFSDK_WaveWorks_GetSurfaceAttributes(GFSDK_WAVEWORKS_INTERPOLATED_VERTEX_OUTPUT In)
+{
+	// Calculate eye vector.
+	// Beware: 'nvsf_eye_vec' is a large number, 32bit floating point required.
+	float3 nvsf_eye_dir = normalize(In.nvsf_eye_vec);
+
+	// --------------- Water body color
+
+	float4 nvsf_grad_fold0;
+	float4 nvsf_grad_fold1;
+	float4 nvsf_grad_fold2;
+	float4 nvsf_grad_fold3;
+	
+	#if defined(GFSDK_WAVEWORKS_GL)
+		float3 nvsf_displacement;
+		if(nvsf_g_UseTextureArrays > 0)
+		{
+			nvsf_grad_fold0 = SampleTex2D(nvsf_g_textureArrayGradientMap, nvsf_g_samplerGradientMapTextureArray, vec3(In.nvsf_tex_coord_cascade01.xy, 0.0));
+			nvsf_grad_fold1 = SampleTex2D(nvsf_g_textureArrayGradientMap, nvsf_g_samplerGradientMapTextureArray, vec3(In.nvsf_tex_coord_cascade01.zw, 1.0));
+			nvsf_grad_fold2 = SampleTex2D(nvsf_g_textureArrayGradientMap, nvsf_g_samplerGradientMapTextureArray, vec3(In.nvsf_tex_coord_cascade23.xy, 2.0));
+			nvsf_grad_fold3 = SampleTex2D(nvsf_g_textureArrayGradientMap, nvsf_g_samplerGradientMapTextureArray, vec3(In.nvsf_tex_coord_cascade23.zw, 3.0));
+		}
+		else
+		{
+			nvsf_grad_fold0 = SampleTex2D(nvsf_g_textureGradientMap0, nvsf_g_samplerGradientMap0, In.nvsf_tex_coord_cascade01.xy);
+			nvsf_grad_fold1 = SampleTex2D(nvsf_g_textureGradientMap1, nvsf_g_samplerGradientMap1, In.nvsf_tex_coord_cascade01.zw);
+			nvsf_grad_fold2 = SampleTex2D(nvsf_g_textureGradientMap2, nvsf_g_samplerGradientMap2, In.nvsf_tex_coord_cascade23.xy);
+			nvsf_grad_fold3 = SampleTex2D(nvsf_g_textureGradientMap3, nvsf_g_samplerGradientMap3, In.nvsf_tex_coord_cascade23.zw);
+		}
+	#else
+	
+		nvsf_grad_fold0 = SampleTex2D(nvsf_g_textureGradientMap0, nvsf_g_samplerGradientMap0, In.nvsf_tex_coord_cascade01.xy);
+		nvsf_grad_fold1 = SampleTex2D(nvsf_g_textureGradientMap1, nvsf_g_samplerGradientMap1, In.nvsf_tex_coord_cascade01.zw);
+		nvsf_grad_fold2 = SampleTex2D(nvsf_g_textureGradientMap2, nvsf_g_samplerGradientMap2, In.nvsf_tex_coord_cascade23.xy);
+		nvsf_grad_fold3 = SampleTex2D(nvsf_g_textureGradientMap3, nvsf_g_samplerGradientMap3, In.nvsf_tex_coord_cascade23.zw);
+	#endif
+
+	float2 nvsf_grad;
+	nvsf_grad.xy = nvsf_grad_fold0.xy*In.nvsf_blend_factor_cascade0123.x + 
+				   nvsf_grad_fold1.xy*In.nvsf_blend_factor_cascade0123.y*nvsf_g_Cascade1TexelScale_PS + 
+				   nvsf_grad_fold2.xy*In.nvsf_blend_factor_cascade0123.z*nvsf_g_Cascade2TexelScale_PS + 
+				   nvsf_grad_fold3.xy*In.nvsf_blend_factor_cascade0123.w*nvsf_g_Cascade3TexelScale_PS;
+
+	float nvsf_c2c_scale = 0.25; // larger cascaded cover larger areas, so foamed texels cover larger area, thus, foam intensity on these needs to be scaled down for uniform foam look
+
+	float nvsf_foam_turbulent_energy = 
+					  // accumulated foam energy with blendfactors
+					  100.0*nvsf_grad_fold0.w *  
+					  lerp(nvsf_c2c_scale, nvsf_grad_fold1.w, In.nvsf_blend_factor_cascade0123.y)*
+					  lerp(nvsf_c2c_scale, nvsf_grad_fold2.w, In.nvsf_blend_factor_cascade0123.z)*
+					  lerp(nvsf_c2c_scale, nvsf_grad_fold3.w, In.nvsf_blend_factor_cascade0123.w);
+
+
+	float nvsf_foam_surface_folding = 
+						// folding for foam "clumping" on folded areas
+    				   max(-100,
+					  (1.0-nvsf_grad_fold0.z) +
+					  (1.0-nvsf_grad_fold1.z) +
+					  (1.0-nvsf_grad_fold2.z) +
+					  (1.0-nvsf_grad_fold3.z));
+	
+	// Calculate normal here.
+	float3 nvsf_normal = normalize(float3(nvsf_grad, nvsf_g_TexelLength_x2_PS));
+
+	float nvsf_hats_c2c_scale = 0.5;		// the larger is the wave, the higher is the chance to start breaking at high folding, so folding for smaller cascade s is decreased
+	float nvsf_foam_wave_hats =  
+      				   10.0*(-0.55 + // this allows hats to appear on breaking places only. Can be tweaked to represent Beaufort scale better
+					  (1.0-nvsf_grad_fold0.z) +
+					  nvsf_hats_c2c_scale*(1.0-nvsf_grad_fold1.z) +
+					  nvsf_hats_c2c_scale*nvsf_hats_c2c_scale*(1.0-nvsf_grad_fold2.z) +
+					  nvsf_hats_c2c_scale*nvsf_hats_c2c_scale*nvsf_hats_c2c_scale*(1.0-nvsf_grad_fold3.z));
+
+
+	// Output
+	GFSDK_WAVEWORKS_SURFACE_ATTRIBUTES Output;
+	Output.normal = nvsf_normal;
+	Output.eye_dir = nvsf_eye_dir;
+	Output.foam_surface_folding = nvsf_foam_surface_folding;
+	Output.foam_turbulent_energy = log(1.0 + nvsf_foam_turbulent_energy);
+	Output.foam_wave_hats = nvsf_foam_wave_hats;
+	return Output;
+}
+
+
+#endif /* _GFSDK_WAVEWORKS_ATTRIBUTES_FX */
diff --git a/src/shader/CalcGradient.fx b/src/shader/CalcGradient.fx
new file mode 100644
index 0000000..e66e75f
--- /dev/null
+++ b/src/shader/CalcGradient.fx
@@ -0,0 +1,117 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#include "Common.fxh"
+
+#ifdef GFSDK_WAVEWORKS_GL
+#define DECLARE_ATTR_CONSTANT(Type,Label,Regoff) uniform Type Label
+#define DECLARE_ATTR_SAMPLER(Label,TextureLabel,Regoff) \
+	uniform sampler2D TextureLabel
+#else
+#define DECLARE_ATTR_CONSTANT(Type,Label,Regoff) Type Label : register(c##Regoff)
+#define DECLARE_ATTR_SAMPLER(Label,TextureLabel,Regoff) \
+	Texture2D Label : register(t##Regoff);	\
+	SamplerState TextureLabel : register(s##Regoff)
+#endif
+
+//------------------------------------------------------------------------------------
+// Global variables
+//------------------------------------------------------------------------------------
+
+BEGIN_CBUFFER(nvsf_globals,0)
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_Scales,        0); // was: float nvsf_g_ChoppyScale, nvsf_g_GradMap2TexelWSScale
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_OneTexel_Left, 1);
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_OneTexel_Right,2);
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_OneTexel_Back, 3);
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_OneTexel_Front,4);
+END_CBUFFER
+
+DECLARE_ATTR_SAMPLER(nvsf_g_textureDisplacementMap,nvsf_g_samplerDisplacementMap,0);
+
+#ifdef GFSDK_WAVEWORKS_GL
+varying float2 nvsf_vInterpTexCoord;
+#endif
+
+#ifndef GFSDK_WAVEWORKS_OMIT_VS
+
+#ifdef GFSDK_WAVEWORKS_GL
+attribute float4 nvsf_vInPos;
+attribute float2 nvsf_vInTexCoord;
+#define nvsf_vOutPos gl_Position
+void main()
+#else
+void vs(
+	float4 nvsf_vInPos SEMANTIC(POSITION),
+	float2 nvsf_vInTexCoord SEMANTIC(TEXCOORD0),
+	out float2 nvsf_vInterpTexCoord SEMANTIC(TEXCOORD0),
+	out float4 nvsf_vOutPos SEMANTIC(SV_Position)
+)
+#endif
+{
+    // No need to do matrix transform.
+    nvsf_vOutPos = nvsf_vInPos;
+    
+	// Pass through general texture coordinate.
+    nvsf_vInterpTexCoord = nvsf_vInTexCoord;
+}
+
+#endif // !GFSDK_WAVEWORKS_OMIT_VS
+
+
+#ifndef GFSDK_WAVEWORKS_OMIT_PS
+
+#ifdef GFSDK_WAVEWORKS_GL
+#define nvsf_Output gl_FragColor
+void main()
+#else
+void ps(
+	float2 nvsf_vInterpTexCoord SEMANTIC(TEXCOORD0),
+	out float4 nvsf_Output SEMANTIC(SV_Target)
+)
+#endif
+{
+	// Sample neighbour texels
+	float3 nvsf_displace_left	= SampleTex2D(nvsf_g_textureDisplacementMap, nvsf_g_samplerDisplacementMap, nvsf_vInterpTexCoord.xy + nvsf_g_OneTexel_Left.xy).rgb;
+	float3 nvsf_displace_right	= SampleTex2D(nvsf_g_textureDisplacementMap, nvsf_g_samplerDisplacementMap, nvsf_vInterpTexCoord.xy + nvsf_g_OneTexel_Right.xy).rgb;
+	float3 nvsf_displace_back	= SampleTex2D(nvsf_g_textureDisplacementMap, nvsf_g_samplerDisplacementMap, nvsf_vInterpTexCoord.xy + nvsf_g_OneTexel_Back.xy).rgb;
+	float3 nvsf_displace_front	= SampleTex2D(nvsf_g_textureDisplacementMap, nvsf_g_samplerDisplacementMap, nvsf_vInterpTexCoord.xy + nvsf_g_OneTexel_Front.xy).rgb;
+	
+	// -------- Do not store the actual normal value, instead, it preserves two differential values.
+	float2 nvsf_gradient = float2(-(nvsf_displace_right.z - nvsf_displace_left.z) / max(0.01,1.0 + nvsf_g_Scales.y*(nvsf_displace_right.x - nvsf_displace_left.x)), -(nvsf_displace_front.z - nvsf_displace_back.z) / max(0.01,1.0+nvsf_g_Scales.y*(nvsf_displace_front.y - nvsf_displace_back.y)));
+	//float2 nvsf_gradient = {-(nvsf_displace_right.z - nvsf_displace_left.z), -(nvsf_displace_front.z - nvsf_displace_back.z) };
+	
+	// Calculate Jacobian corelation from the partial differential of displacement field
+	float2 nvsf_Dx = (nvsf_displace_right.xy - nvsf_displace_left.xy) * nvsf_g_Scales.x;
+	float2 nvsf_Dy = (nvsf_displace_front.xy - nvsf_displace_back.xy) * nvsf_g_Scales.x;
+	float nvsf_J = (1.0f + nvsf_Dx.x) * (1.0f + nvsf_Dy.y) - nvsf_Dx.y * nvsf_Dy.x;
+
+	// Output
+	nvsf_Output = float4(nvsf_gradient, nvsf_J, 0);
+}
+
+#endif // !GFSDK_WAVEWORKS_OMIT_PS
diff --git a/src/shader/CalcGradient_SM3.fx b/src/shader/CalcGradient_SM3.fx
new file mode 100644
index 0000000..3c09164
--- /dev/null
+++ b/src/shader/CalcGradient_SM3.fx
@@ -0,0 +1,30 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_SM3
+#include "CalcGradient_nvsf.fx"
diff --git a/src/shader/CalcGradient_SM4.fx b/src/shader/CalcGradient_SM4.fx
new file mode 100644
index 0000000..7a6e93f
--- /dev/null
+++ b/src/shader/CalcGradient_SM4.fx
@@ -0,0 +1,30 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_SM4
+#include "CalcGradient_nvsf.fx"
diff --git a/src/shader/CalcGradient_glsl.ps b/src/shader/CalcGradient_glsl.ps
new file mode 100644
index 0000000..51064db
--- /dev/null
+++ b/src/shader/CalcGradient_glsl.ps
@@ -0,0 +1,31 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_GL
+#define GFSDK_WAVEWORKS_OMIT_VS
+#include "CalcGradient_nvsf.fx"
diff --git a/src/shader/CalcGradient_glsl.vs b/src/shader/CalcGradient_glsl.vs
new file mode 100644
index 0000000..497d1f0
--- /dev/null
+++ b/src/shader/CalcGradient_glsl.vs
@@ -0,0 +1,31 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_GL
+#define GFSDK_WAVEWORKS_OMIT_PS
+#include "CalcGradient_nvsf.fx"
diff --git a/src/shader/CalcGradient_gnm.fx b/src/shader/CalcGradient_gnm.fx
new file mode 100644
index 0000000..9a88f79
--- /dev/null
+++ b/src/shader/CalcGradient_gnm.fx
@@ -0,0 +1,30 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_GNM
+#include "CalcGradient_nvsf.fx"
diff --git a/src/shader/Common.fxh b/src/shader/Common.fxh
new file mode 100644
index 0000000..c100c8b
--- /dev/null
+++ b/src/shader/Common.fxh
@@ -0,0 +1,79 @@
+/*
+ * This code contains NVIDIA Confidential Information and is disclosed 
+ * under the Mutual Non-Disclosure Agreement. 
+ * 
+ * Notice 
+ * ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+ * NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+ * THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+ * MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+ * 
+ * NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+ * information or for any infringement of patents or other rights of third parties that may 
+ * result from its use. No license is granted by implication or otherwise under any patent 
+ * or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+ * expressly authorized by NVIDIA.  Details are subject to change without notice. 
+ * This code supersedes and replaces all information previously supplied. 
+ * NVIDIA Corporation products are not authorized for use as critical 
+ * components in life support devices or systems without express written approval of 
+ * NVIDIA Corporation. 
+ * 
+ * Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+ * 
+ * NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+ * rights in and to this software and related documentation and any modifications thereto.
+ * Any use, reproduction, disclosure or distribution of this software and related
+ * documentation without an express license agreement from NVIDIA Corporation is
+ * strictly prohibited.
+ */
+
+#ifndef _GFSDK_WAVEWORKS_COMMON_FX
+#define _GFSDK_WAVEWORKS_COMMON_FX
+/*
+ *
+ *
+ */
+#if defined(GFSDK_WAVEWORKS_SM4) || defined(GFSDK_WAVEWORKS_SM5)
+	#define SampleTex2D(nvsf_texture,nvsf_sampler,nvsf_coords) nvsf_texture.Sample(nvsf_sampler,nvsf_coords)
+	#define SampleTex2Dlod(nvsf_texture,nvsf_sampler,nvsf_coords,nvsf_lod) nvsf_texture.SampleLevel(nvsf_sampler,nvsf_coords,nvsf_lod)
+	#define BEGIN_CBUFFER(name,slot) cbuffer name : register(b##slot) {
+	#define END_CBUFFER };
+	#define SEMANTIC(x) : x
+#elif defined(GFSDK_WAVEWORKS_SM3)
+	#define SampleTex2D(nvsf_texture,nvsf_sampler,nvsf_coords) tex2D(nvsf_sampler,nvsf_coords)
+	#define SampleTex2Dlod(nvsf_texture,nvsf_sampler,nvsf_coords,nvsf_lod) tex2Dlod(nvsf_sampler,float4(nvsf_coords,0,nvsf_lod))
+	#define BEGIN_CBUFFER(name,slot)
+	#define END_CBUFFER
+	#define SV_Target COLOR
+	#define SV_Position POSITION
+	#define SEMANTIC(x) : x
+#elif defined(GFSDK_WAVEWORKS_GNM)
+	#define SampleTex2D(nvsf_texture,nvsf_sampler,nvsf_coords) nvsf_texture.Sample(nvsf_sampler,nvsf_coords)
+	#define SampleTex2Dlod(nvsf_texture,nvsf_sampler,nvsf_coords,nvsf_lod) nvsf_texture.SampleLOD(nvsf_sampler,nvsf_coords,nvsf_lod)
+	#define BEGIN_CBUFFER(name,slot) ConstantBuffer name : register(b##slot) {
+	#define END_CBUFFER };
+	#define SV_Target S_TARGET_OUTPUT
+	#define SV_Position S_POSITION
+	#define SEMANTIC(x) : x
+#elif defined(GFSDK_WAVEWORKS_GL)
+	#define SampleTex2D(nvsf_texture,nvsf_sampler,nvsf_coords) texture(nvsf_sampler,nvsf_coords)
+	#define SampleTex2Dlod(nvsf_texture,nvsf_sampler,nvsf_coords,nvsf_lod) textureLod(nvsf_sampler,nvsf_coords,nvsf_lod)
+	#define BEGIN_CBUFFER(name,slot)
+	#define END_CBUFFER
+	#define SEMANTIC(x)
+	#define float2 vec2
+	#define float3 vec3
+	#define float4 vec4
+	#define float4x3 mat3x4
+	//vec3 mul(vec4 v, mat3x4 m) { return v * m; }
+    #define mul(v,m) ((v)*(m))
+	#define lerp mix
+	#define saturate(x) clamp(x,0.0,1.0)
+#else
+	#error Shader model not defined (expected GFSDK_WAVEWORKS_SM3, GFSDK_WAVEWORKS_SM4, GFSDK_WAVEWORKS_SM5, GFSDK_WAVEWORKS_GNM or GFSDK_WAVEWORKS_GL)
+#endif
+/*
+ *
+ *
+ */
+#endif /* _GFSDK_WAVEWORKS_COMMON_FX */
diff --git a/src/shader/FoamGeneration.fx b/src/shader/FoamGeneration.fx
new file mode 100644
index 0000000..496916f
--- /dev/null
+++ b/src/shader/FoamGeneration.fx
@@ -0,0 +1,121 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#include "Common.fxh"
+
+#ifdef GFSDK_WAVEWORKS_GL
+#define DECLARE_ATTR_CONSTANT(Type,Label,Regoff) uniform Type Label
+#define DECLARE_ATTR_SAMPLER(Label,TextureLabel,Regoff) \
+	uniform sampler2D TextureLabel
+#else
+#define DECLARE_ATTR_CONSTANT(Type,Label,Regoff) Type Label : register(c##Regoff)
+#define DECLARE_ATTR_SAMPLER(Label,TextureLabel,Regoff) \
+	Texture2D Label : register(t##Regoff);	\
+	SamplerState TextureLabel : register(s##Regoff)
+#endif
+
+//------------------------------------------------------------------------------------
+// Global variables
+//------------------------------------------------------------------------------------
+
+BEGIN_CBUFFER(nvsf_globals,0)
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_DissipationFactors,0); // x - the blur extents, y - the fadeout multiplier, z - the accumulation multiplier, w - foam generation threshold
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_SourceComponents  ,1); // xyzw - weights of energy map components to be sampled
+DECLARE_ATTR_CONSTANT(float4,nvsf_g_UVOffsets         ,2); // xy - defines either horizontal offsets either vertical offsets
+END_CBUFFER
+
+DECLARE_ATTR_SAMPLER(nvsf_g_textureEnergyMap,nvsf_g_samplerEnergyMap,0);
+
+#ifdef GFSDK_WAVEWORKS_GL
+varying float2 nvsf_vInterpTexCoord;
+#endif
+
+#ifndef GFSDK_WAVEWORKS_OMIT_VS
+
+#ifdef GFSDK_WAVEWORKS_GL
+attribute float4 nvsf_vInPos;
+attribute float2 nvsf_vInTexCoord;
+#define nvsf_vOutPos gl_Position
+void main()
+#else
+void vs(
+	float4 nvsf_vInPos SEMANTIC(POSITION),
+	float2 nvsf_vInTexCoord SEMANTIC(TEXCOORD0),
+	out float2 nvsf_vInterpTexCoord SEMANTIC(TEXCOORD0),
+	out float4 nvsf_vOutPos SEMANTIC(SV_Position)
+)
+#endif
+{
+    // No need to do matrix transform.
+    nvsf_vOutPos = nvsf_vInPos;
+    
+	// Pass through general texture coordinate.
+    nvsf_vInterpTexCoord = nvsf_vInTexCoord;
+}
+
+#endif // !GFSDK_WAVEWORKS_OMIT_VS
+
+// at 1st rendering step, the folding and the accumulated foam values are being read from gradient map (components z and w),
+// blurred by X, summed, faded and written to foam energy map 
+
+// at 2nd rendering step, the accumulated foam values are being read from foam energy texture,
+// blurred by Y and written to w component of gradient map
+
+#ifndef GFSDK_WAVEWORKS_OMIT_PS
+
+#ifdef GFSDK_WAVEWORKS_GL
+#define nvsf_Output gl_FragColor
+void main()
+#else
+void ps(
+	float2 nvsf_vInterpTexCoord SEMANTIC(TEXCOORD0),
+	out float4 nvsf_Output SEMANTIC(SV_Target)
+)
+#endif
+{
+
+	float2 nvsf_UVoffset = nvsf_g_UVOffsets.xy*nvsf_g_DissipationFactors.x;
+
+	// blur with variable size kernel is done by doing 4 bilinear samples, 
+	// each sample is slightly offset from the center point
+	float nvsf_foamenergy1	= dot(nvsf_g_SourceComponents, SampleTex2D(nvsf_g_textureEnergyMap, nvsf_g_samplerEnergyMap, nvsf_vInterpTexCoord.xy + nvsf_UVoffset));
+	float nvsf_foamenergy2	= dot(nvsf_g_SourceComponents, SampleTex2D(nvsf_g_textureEnergyMap, nvsf_g_samplerEnergyMap, nvsf_vInterpTexCoord.xy - nvsf_UVoffset));
+	float nvsf_foamenergy3	= dot(nvsf_g_SourceComponents, SampleTex2D(nvsf_g_textureEnergyMap, nvsf_g_samplerEnergyMap, nvsf_vInterpTexCoord.xy + nvsf_UVoffset*2.0));
+	float nvsf_foamenergy4	= dot(nvsf_g_SourceComponents, SampleTex2D(nvsf_g_textureEnergyMap, nvsf_g_samplerEnergyMap, nvsf_vInterpTexCoord.xy - nvsf_UVoffset*2.0));
+	
+	float nvsf_folding = max(0,SampleTex2D(nvsf_g_textureEnergyMap, nvsf_g_samplerEnergyMap, nvsf_vInterpTexCoord.xy).z);
+
+	float nvsf_energy = nvsf_g_DissipationFactors.y*((nvsf_foamenergy1 + nvsf_foamenergy2 + nvsf_foamenergy3 + nvsf_foamenergy4)*0.25 + max(0,(1.0-nvsf_folding-nvsf_g_DissipationFactors.w))*nvsf_g_DissipationFactors.z);
+
+	nvsf_energy = min(1.0,nvsf_energy);
+
+	// Output
+	nvsf_Output = float4(nvsf_energy,nvsf_energy,nvsf_energy,nvsf_energy);
+}
+
+#endif // !GFSDK_WAVEWORKS_OMIT_PS
\ No newline at end of file
diff --git a/src/shader/FoamGeneration_SM3.fx b/src/shader/FoamGeneration_SM3.fx
new file mode 100644
index 0000000..f160637
--- /dev/null
+++ b/src/shader/FoamGeneration_SM3.fx
@@ -0,0 +1,30 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_SM3
+#include "FoamGeneration_nvsf.fx"
diff --git a/src/shader/FoamGeneration_SM4.fx b/src/shader/FoamGeneration_SM4.fx
new file mode 100644
index 0000000..154d43d
--- /dev/null
+++ b/src/shader/FoamGeneration_SM4.fx
@@ -0,0 +1,30 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_SM4
+#include  "FoamGeneration_nvsf.fx"
diff --git a/src/shader/FoamGeneration_glsl.ps b/src/shader/FoamGeneration_glsl.ps
new file mode 100644
index 0000000..7581a1f
--- /dev/null
+++ b/src/shader/FoamGeneration_glsl.ps
@@ -0,0 +1,31 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_GL
+#define GFSDK_WAVEWORKS_OMIT_VS
+#include "FoamGeneration_nvsf.fx"
diff --git a/src/shader/FoamGeneration_glsl.vs b/src/shader/FoamGeneration_glsl.vs
new file mode 100644
index 0000000..7be28d6
--- /dev/null
+++ b/src/shader/FoamGeneration_glsl.vs
@@ -0,0 +1,31 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_GL
+#define GFSDK_WAVEWORKS_OMIT_PS
+#include "FoamGeneration_nvsf.fx"
diff --git a/src/shader/FoamGeneration_gnm.fx b/src/shader/FoamGeneration_gnm.fx
new file mode 100644
index 0000000..c81afad
--- /dev/null
+++ b/src/shader/FoamGeneration_gnm.fx
@@ -0,0 +1,30 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_GNM
+#include  "FoamGeneration_nvsf.fx"
diff --git a/src/shader/Quadtree.fxh b/src/shader/Quadtree.fxh
new file mode 100644
index 0000000..b06e437
--- /dev/null
+++ b/src/shader/Quadtree.fxh
@@ -0,0 +1,178 @@
+/*
+ * This code contains NVIDIA Confidential Information and is disclosed 
+ * under the Mutual Non-Disclosure Agreement. 
+ * 
+ * Notice 
+ * ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+ * NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+ * THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+ * MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+ * 
+ * NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+ * information or for any infringement of patents or other rights of third parties that may 
+ * result from its use. No license is granted by implication or otherwise under any patent 
+ * or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+ * expressly authorized by NVIDIA.  Details are subject to change without notice. 
+ * This code supersedes and replaces all information previously supplied. 
+ * NVIDIA Corporation products are not authorized for use as critical 
+ * components in life support devices or systems without express written approval of 
+ * NVIDIA Corporation. 
+ * 
+ * Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+ * 
+ * NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+ * rights in and to this software and related documentation and any modifications thereto.
+ * Any use, reproduction, disclosure or distribution of this software and related
+ * documentation without an express license agreement from NVIDIA Corporation is
+ * strictly prohibited.
+ */
+
+#include "GFSDK_WaveWorks_Common.fxh"
+
+/*
+ *
+ *
+ */
+ 
+#if defined(GFSDK_WAVEWORKS_SM3) || defined(GFSDK_WAVEWORKS_GL)
+	#define GFSDK_WAVEWORKS_BEGIN_GEOM_VS_CBUFFER(Label)
+	#define GFSDK_WAVEWORKS_END_GEOM_VS_CBUFFER
+#endif
+
+#if defined( GFSDK_WAVEWORKS_USE_TESSELLATION )
+	GFSDK_WAVEWORKS_BEGIN_GEOM_HS_CBUFFER(nvsf_eyepos_buffer)
+	GFSDK_WAVEWORKS_DECLARE_GEOM_HS_CONSTANT(float4, nvsf_g_hsWorldEye, 0)
+	GFSDK_WAVEWORKS_DECLARE_GEOM_HS_CONSTANT(float4, nvsf_g_tessellationParams, 1)
+	GFSDK_WAVEWORKS_END_GEOM_HS_CBUFFER
+#endif
+
+GFSDK_WAVEWORKS_BEGIN_GEOM_VS_CBUFFER(nvsf_geom_buffer)
+GFSDK_WAVEWORKS_DECLARE_GEOM_VS_CONSTANT(float4x3, nvsf_g_matLocalWorld, 0)
+GFSDK_WAVEWORKS_DECLARE_GEOM_VS_CONSTANT(float4, nvsf_g_vsEyePos, 3)
+GFSDK_WAVEWORKS_DECLARE_GEOM_VS_CONSTANT(float4, nvsf_g_MorphParam, 4)
+GFSDK_WAVEWORKS_END_GEOM_VS_CBUFFER
+
+
+struct GFSDK_WAVEWORKS_VERTEX_INPUT
+{
+	float4 nvsf_vPos SEMANTIC(POSITION);
+};
+
+#if !defined(GFSDK_WAVEWORKS_USE_TESSELLATION)
+float3 GFSDK_WaveWorks_GetUndisplacedVertexWorldPosition(GFSDK_WAVEWORKS_VERTEX_INPUT In)
+{
+	float2 nvsf_vpos = In.nvsf_vPos.xy;
+	
+	// Use multiple levels of geo-morphing to smooth away LOD boundaries
+	float nvsf_geomorph_scale = 0.25f;
+
+	float2 nvsf_geomorph_offset = float2(nvsf_g_MorphParam.w,nvsf_g_MorphParam.w);
+	float2 nvsf_vpos_src = nvsf_vpos;
+	float2 nvsf_vpos_target = nvsf_vpos_src;
+	float nvsf_geomorph_amount = 0.f;
+	
+	for(int nvsf_geomorph_level = 0; nvsf_geomorph_level != 4; ++nvsf_geomorph_level) {
+
+		float2 nvsf_intpart;
+		float2 nvsf_rempart = modf(nvsf_geomorph_scale*nvsf_vpos_src.xy,nvsf_intpart);
+
+		float2 nvsf_mirror = float2(1.0f, 1.0f);
+		
+		if(nvsf_rempart.x >  0.5f)
+		{
+			nvsf_rempart.x = 1.0f - nvsf_rempart.x;
+			nvsf_mirror.x = -nvsf_mirror.x;
+		}
+		if(nvsf_rempart.y >  0.5f)
+		{
+			nvsf_rempart.y = 1.0f - nvsf_rempart.y;
+			nvsf_mirror.y = -nvsf_mirror.y;
+		}
+		
+
+		if(0.25f == nvsf_rempart.x && 0.25f == nvsf_rempart.y) nvsf_vpos_target.xy = nvsf_vpos_src.xy - nvsf_geomorph_offset*nvsf_mirror;
+		else if(0.25f == nvsf_rempart.x) nvsf_vpos_target.x = nvsf_vpos_src.x + nvsf_geomorph_offset.x*nvsf_mirror.x;
+		else if(0.25f == nvsf_rempart.y) nvsf_vpos_target.y = nvsf_vpos_src.y + nvsf_geomorph_offset.y*nvsf_mirror.y;
+
+		float3 nvsf_eyevec = mul(float4(nvsf_vpos_target,0.f,1.f), nvsf_g_matLocalWorld) - nvsf_g_vsEyePos.xyz;
+		float nvsf_d = length(nvsf_eyevec);
+		float nvsf_geomorph_target_level = log2(nvsf_d * nvsf_g_MorphParam.x) + 1.f;
+		nvsf_geomorph_amount = saturate(2.0*(nvsf_geomorph_target_level - float(nvsf_geomorph_level)));
+		if(nvsf_geomorph_amount < 1.f) 
+		{
+			break;
+		} 
+		else 
+		{
+			nvsf_vpos_src = nvsf_vpos_target;
+			nvsf_geomorph_scale *= 0.5f;
+			nvsf_geomorph_offset *= -2.f;
+		}
+	}
+
+	nvsf_vpos.xy = lerp(nvsf_vpos_src, nvsf_vpos_target, nvsf_geomorph_amount);
+	return mul(float4(nvsf_vpos,In.nvsf_vPos.zw), nvsf_g_matLocalWorld);
+}
+#endif
+
+
+#if defined(GFSDK_WAVEWORKS_USE_TESSELLATION)
+float3 GFSDK_WaveWorks_GetUndisplacedVertexWorldPosition(GFSDK_WAVEWORKS_VERTEX_INPUT In)
+{
+	float2 nvsf_vpos = In.nvsf_vPos.xy;
+	// Use multiple levels of geo-morphing to smooth away LOD boundaries
+	float nvsf_geomorph_scale = 0.5f;
+	float nvsf_geomorph_offset = abs(nvsf_g_MorphParam.w);
+	float2 nvsf_vpos_src = nvsf_vpos;
+	float2 nvsf_vpos_target = nvsf_vpos_src;
+	float nvsf_geomorph_amount = 0.f;
+	
+	//nvsf_vpos_target.x += 0.25*nvsf_geomorph_offset;
+	//nvsf_vpos_src.x += 0.25*nvsf_geomorph_offset;
+	
+	for(int nvsf_geomorph_level = 0; nvsf_geomorph_level != 4; ++nvsf_geomorph_level) {
+
+		float2 nvsf_intpart;
+		float2 nvsf_rempart = modf(nvsf_geomorph_scale*nvsf_vpos_src.xy,nvsf_intpart);
+		if(0.5f == nvsf_rempart.x) 
+		{
+			nvsf_vpos_target.x = nvsf_vpos_src.x + nvsf_geomorph_offset;
+		}
+
+		if(0.5f == nvsf_rempart.y) 
+		{
+			nvsf_vpos_target.y = nvsf_vpos_src.y + nvsf_geomorph_offset;
+		}
+		
+		float3 nvsf_eyevec = mul(float4(nvsf_vpos_target,0.f,1.f), nvsf_g_matLocalWorld) - nvsf_g_vsEyePos.xyz;
+		float nvsf_d = length(nvsf_eyevec);
+		float nvsf_geomorph_target_level = log2(nvsf_d * nvsf_g_MorphParam.x) + 1.f;
+		nvsf_geomorph_amount = saturate(3.0*(nvsf_geomorph_target_level - float(nvsf_geomorph_level)));
+		if(nvsf_geomorph_amount < 1.f) {
+			break;
+		} else {
+			nvsf_vpos_src = nvsf_vpos_target;
+			nvsf_geomorph_scale *= 0.5f;
+			nvsf_geomorph_offset *= 2.f;
+		}
+	}
+	nvsf_vpos.xy = lerp(nvsf_vpos_src, nvsf_vpos_target, nvsf_geomorph_amount);
+	return mul(float4(nvsf_vpos,In.nvsf_vPos.zw), nvsf_g_matLocalWorld);
+}
+
+float GFSDK_WaveWorks_GetEdgeTessellationFactor(float4 vertex1, float4 vertex2)
+{
+	float3 nvsf_edge_center = 0.5*(vertex1.xyz + vertex2.xyz);
+	float nvsf_edge_length = length (vertex1.xyz - vertex2.xyz);
+	float nvsf_edge_distance = length(nvsf_g_hsWorldEye.xyz - nvsf_edge_center.xyz);
+	return nvsf_g_tessellationParams.x * nvsf_edge_length / nvsf_edge_distance;
+}
+
+float GFSDK_WaveWorks_GetVertexTargetTessellatedEdgeLength(float3 vertex)
+{
+	float nvsf_vertex_distance = length(nvsf_g_hsWorldEye.xyz - vertex.xyz);
+	return nvsf_vertex_distance / nvsf_g_tessellationParams.x;
+}
+
+#endif
+
diff --git a/src/shader/Quadtree_GNM_sig.fx b/src/shader/Quadtree_GNM_sig.fx
new file mode 100644
index 0000000..110b805
--- /dev/null
+++ b/src/shader/Quadtree_GNM_sig.fx
@@ -0,0 +1,43 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_GNM
+#define GFSDK_WAVEWORKS_DECLARE_GEOM_VS_CONSTANT(Type,Label,Regoff) Type Label;
+#define GFSDK_WAVEWORKS_BEGIN_GEOM_VS_CBUFFER(Label,Regoff) ConstantBuffer Label {
+#define GFSDK_WAVEWORKS_END_GEOM_VS_CBUFFER };
+
+#define GFSDK_WAVEWORKS_DECLARE_GEOM_HS_CONSTANT(Type,Label,Regoff) Type Label;
+#define GFSDK_WAVEWORKS_BEGIN_GEOM_HS_CBUFFER(Label,Regoff) ConstantBuffer Label {
+#define GFSDK_WAVEWORKS_END_GEOM_HS_CBUFFER };
+
+#include "GFSDK_WaveWorks_Quadtree.fxh"
+
+float4 GFSDK_WAVEWORKS_VERTEX_INPUT_Sig(GFSDK_WAVEWORKS_VERTEX_INPUT In) : VS_OUTPUT
+{
+	return In.nv_waveworks_quad7;
+}
diff --git a/src/shader/Quadtree_SM4_sig.fx b/src/shader/Quadtree_SM4_sig.fx
new file mode 100644
index 0000000..b1b0884
--- /dev/null
+++ b/src/shader/Quadtree_SM4_sig.fx
@@ -0,0 +1,39 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_SM4
+#define GFSDK_WAVEWORKS_DECLARE_GEOM_VS_CONSTANT(Type,Label,Regoff) Type Label;
+#define GFSDK_WAVEWORKS_BEGIN_GEOM_VS_CBUFFER(Label) cbuffer Label {
+#define GFSDK_WAVEWORKS_END_GEOM_VS_CBUFFER };
+
+#include "GFSDK_WaveWorks_Quadtree.fxh"
+
+float4 GFSDK_WAVEWORKS_VERTEX_INPUT_Sig(GFSDK_WAVEWORKS_VERTEX_INPUT In) : SV_Position
+{
+	return In.nv_waveworks_quad7;
+}
diff --git a/src/shader/Quadtree_SM5_sig.fx b/src/shader/Quadtree_SM5_sig.fx
new file mode 100644
index 0000000..89a2e51
--- /dev/null
+++ b/src/shader/Quadtree_SM5_sig.fx
@@ -0,0 +1,45 @@
+// This code contains NVIDIA Confidential Information and is disclosed 
+// under the Mutual Non-Disclosure Agreement. 
+// 
+// Notice 
+// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES 
+// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, 
+// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. 
+// 
+// NVIDIA Corporation assumes no responsibility for the consequences of use of such 
+// information or for any infringement of patents or other rights of third parties that may 
+// result from its use. No license is granted by implication or otherwise under any patent 
+// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless 
+// expressly authorized by NVIDIA.  Details are subject to change without notice. 
+// This code supersedes and replaces all information previously supplied. 
+// NVIDIA Corporation products are not authorized for use as critical 
+// components in life support devices or systems without express written approval of 
+// NVIDIA Corporation. 
+// 
+// Copyright � 2008- 2013 NVIDIA Corporation. All rights reserved.
+//
+// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
+// rights in and to this software and related documentation and any modifications thereto.
+// Any use, reproduction, disclosure or distribution of this software and related
+// documentation without an express license agreement from NVIDIA Corporation is
+// strictly prohibited.
+//
+
+#define GFSDK_WAVEWORKS_SM5
+#define GFSDK_WAVEWORKS_USE_TESSELLATION
+
+#define GFSDK_WAVEWORKS_DECLARE_GEOM_VS_CONSTANT(Type,Label,Regoff) Type Label;
+#define GFSDK_WAVEWORKS_BEGIN_GEOM_VS_CBUFFER(Label) cbuffer Label {
+#define GFSDK_WAVEWORKS_END_GEOM_VS_CBUFFER };
+
+#define GFSDK_WAVEWORKS_DECLARE_GEOM_HS_CONSTANT(Type,Label,Regoff) Type Label;
+#define GFSDK_WAVEWORKS_BEGIN_GEOM_HS_CBUFFER(Label) cbuffer Label {
+#define GFSDK_WAVEWORKS_END_GEOM_HS_CBUFFER };
+
+#include "GFSDK_WaveWorks_Quadtree.fxh"
+
+float4 GFSDK_WAVEWORKS_VERTEX_INPUT_Sig(GFSDK_WAVEWORKS_VERTEX_INPUT In) : SV_Position
+{
+	return In.nv_waveworks_quad7;
+}