1012 lines
31 KiB
GLSL
1012 lines
31 KiB
GLSL
// File generated by Flax Materials Editor
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// Version: @0
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#define MATERIAL 1
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#define MAX_LOCAL_LIGHTS 4
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@3
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#include "./Flax/Common.hlsl"
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#include "./Flax/MaterialCommon.hlsl"
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#include "./Flax/GBufferCommon.hlsl"
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#include "./Flax/LightingCommon.hlsl"
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#if USE_REFLECTIONS
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#include "./Flax/ReflectionsCommon.hlsl"
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#endif
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#include "./Flax/Lighting.hlsl"
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#include "./Flax/ShadowsSampling.hlsl"
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#include "./Flax/ExponentialHeightFog.hlsl"
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@7
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// Primary constant buffer (with additional material parameters)
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META_CB_BEGIN(0, Data)
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float4x4 ViewProjectionMatrix;
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float4x4 WorldMatrix;
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float4x4 ViewMatrix;
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float4x4 PrevViewProjectionMatrix;
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float4x4 PrevWorldMatrix;
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float3 ViewPos;
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float ViewFar;
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float3 ViewDir;
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float TimeParam;
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float4 ViewInfo;
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float4 ScreenSize;
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float4 LightmapArea;
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float3 WorldInvScale;
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float WorldDeterminantSign;
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float2 Dummy0;
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float LODDitherFactor;
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float PerInstanceRandom;
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float3 GeometrySize;
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float Dummy1;
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@1META_CB_END
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// Secondary constantant buffer (for lighting)
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META_CB_BEGIN(1, LightingData)
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LightData DirectionalLight;
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LightShadowData DirectionalLightShadow;
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LightData SkyLight;
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ProbeData EnvironmentProbe;
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ExponentialHeightFogData ExponentialHeightFog;
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float3 Dummy2;
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uint LocalLightsCount;
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LightData LocalLights[MAX_LOCAL_LIGHTS];
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META_CB_END
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DECLARE_LIGHTSHADOWDATA_ACCESS(DirectionalLightShadow);
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// Shader resources
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TextureCube EnvProbe : register(t0);
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TextureCube SkyLightTexture : register(t1);
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Texture2DArray DirectionalLightShadowMap : register(t2);
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@2
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// Interpolants passed from the vertex shader
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struct VertexOutput
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{
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float4 Position : SV_Position;
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float3 WorldPosition : TEXCOORD0;
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float2 TexCoord : TEXCOORD1;
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float2 LightmapUV : TEXCOORD2;
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#if USE_VERTEX_COLOR
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half4 VertexColor : COLOR;
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#endif
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float3x3 TBN : TEXCOORD3;
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#if USE_CUSTOM_VERTEX_INTERPOLATORS
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float4 CustomVSToPS[CUSTOM_VERTEX_INTERPOLATORS_COUNT] : TEXCOORD9;
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#endif
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float3 InstanceOrigin : TEXCOORD6;
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float2 InstanceParams : TEXCOORD7; // x-PerInstanceRandom, y-LODDitherFactor
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#if USE_TESSELLATION
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float TessellationMultiplier : TESS;
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#endif
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};
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// Interpolants passed to the pixel shader
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struct PixelInput
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{
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float4 Position : SV_Position;
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float3 WorldPosition : TEXCOORD0;
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float2 TexCoord : TEXCOORD1;
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float2 LightmapUV : TEXCOORD2;
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#if USE_VERTEX_COLOR
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half4 VertexColor : COLOR;
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#endif
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float3x3 TBN : TEXCOORD3;
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#if USE_CUSTOM_VERTEX_INTERPOLATORS
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float4 CustomVSToPS[CUSTOM_VERTEX_INTERPOLATORS_COUNT] : TEXCOORD9;
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#endif
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float3 InstanceOrigin : TEXCOORD6;
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float2 InstanceParams : TEXCOORD7; // x-PerInstanceRandom, y-LODDitherFactor
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bool IsFrontFace : SV_IsFrontFace;
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};
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// Material properties generation input
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struct MaterialInput
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{
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float3 WorldPosition;
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float TwoSidedSign;
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float2 TexCoord;
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#if USE_LIGHTMAP
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float2 LightmapUV;
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#endif
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#if USE_VERTEX_COLOR
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half4 VertexColor;
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#endif
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float3x3 TBN;
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float4 SvPosition;
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float3 PreSkinnedPosition;
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float3 PreSkinnedNormal;
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float3 InstanceOrigin;
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float2 InstanceParams;
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#if USE_INSTANCING
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float3 InstanceTransform1;
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float3 InstanceTransform2;
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float3 InstanceTransform3;
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#endif
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#if USE_CUSTOM_VERTEX_INTERPOLATORS
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float4 CustomVSToPS[CUSTOM_VERTEX_INTERPOLATORS_COUNT];
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#endif
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};
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MaterialInput GetMaterialInput(ModelInput input, VertexOutput output, float3 localNormal)
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{
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MaterialInput result = (MaterialInput)0;
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result.WorldPosition = output.WorldPosition;
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result.TexCoord = output.TexCoord;
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#if USE_LIGHTMAP
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result.LightmapUV = output.LightmapUV;
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#endif
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#if USE_VERTEX_COLOR
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result.VertexColor = output.VertexColor;
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#endif
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result.TBN = output.TBN;
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result.TwoSidedSign = WorldDeterminantSign;
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result.SvPosition = output.Position;
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result.PreSkinnedPosition = input.Position.xyz;
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result.PreSkinnedNormal = localNormal;
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#if USE_INSTANCING
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result.InstanceOrigin = input.InstanceOrigin.xyz;
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result.InstanceParams = float2(input.InstanceOrigin.w, input.InstanceTransform1.w);
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result.InstanceTransform1 = input.InstanceTransform1.xyz;
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result.InstanceTransform2 = input.InstanceTransform2.xyz;
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result.InstanceTransform3 = input.InstanceTransform3.xyz;
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#else
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result.InstanceOrigin = WorldMatrix[3].xyz;
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result.InstanceParams = float2(PerInstanceRandom, LODDitherFactor);
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#endif
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return result;
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}
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MaterialInput GetMaterialInput(VertexOutput output, float3 localPosition, float3 localNormal)
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{
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MaterialInput result = (MaterialInput)0;
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result.WorldPosition = output.WorldPosition;
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result.TexCoord = output.TexCoord;
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#if USE_LIGHTMAP
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result.LightmapUV = output.LightmapUV;
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#endif
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#if USE_VERTEX_COLOR
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result.VertexColor = output.VertexColor;
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#endif
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result.TBN = output.TBN;
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result.TwoSidedSign = WorldDeterminantSign;
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result.InstanceOrigin = WorldMatrix[3].xyz;
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result.InstanceParams = float2(PerInstanceRandom, LODDitherFactor);
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result.SvPosition = output.Position;
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result.PreSkinnedPosition = localPosition;
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result.PreSkinnedNormal = localNormal;
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return result;
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}
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MaterialInput GetMaterialInput(PixelInput input)
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{
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MaterialInput result = (MaterialInput)0;
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result.WorldPosition = input.WorldPosition;
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result.TexCoord = input.TexCoord;
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#if USE_LIGHTMAP
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result.LightmapUV = input.LightmapUV;
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#endif
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#if USE_VERTEX_COLOR
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result.VertexColor = input.VertexColor;
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#endif
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result.TBN = input.TBN;
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result.TwoSidedSign = WorldDeterminantSign * (input.IsFrontFace ? 1.0 : -1.0);
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result.InstanceOrigin = input.InstanceOrigin;
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result.InstanceParams = input.InstanceParams;
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result.SvPosition = input.Position;
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#if USE_CUSTOM_VERTEX_INTERPOLATORS
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result.CustomVSToPS = input.CustomVSToPS;
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#endif
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return result;
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}
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#if USE_INSTANCING
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#define INSTANCE_TRANS_WORLD float4x4(float4(input.InstanceTransform1.xyz, 0.0f), float4(input.InstanceTransform2.xyz, 0.0f), float4(input.InstanceTransform3.xyz, 0.0f), float4(input.InstanceOrigin.xyz, 1.0f))
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#else
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#define INSTANCE_TRANS_WORLD WorldMatrix
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#endif
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// Gets the local to world transform matrix (supports instancing)
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float4x4 GetInstanceTransform(ModelInput input)
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{
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return INSTANCE_TRANS_WORLD;
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}
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float4x4 GetInstanceTransform(ModelInput_Skinned input)
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{
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return INSTANCE_TRANS_WORLD;
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}
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float4x4 GetInstanceTransform(MaterialInput input)
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{
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return INSTANCE_TRANS_WORLD;
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}
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// Removes the scale vector from the local to world transformation matrix (supports instancing)
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float3x3 RemoveScaleFromLocalToWorld(float3x3 localToWorld)
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{
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#if USE_INSTANCING
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// Extract per axis scales from localToWorld transform
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float scaleX = length(localToWorld[0]);
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float scaleY = length(localToWorld[1]);
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float scaleZ = length(localToWorld[2]);
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float3 invScale = float3(
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scaleX > 0.00001f ? 1.0f / scaleX : 0.0f,
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scaleY > 0.00001f ? 1.0f / scaleY : 0.0f,
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scaleZ > 0.00001f ? 1.0f / scaleZ : 0.0f);
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#else
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float3 invScale = WorldInvScale;
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#endif
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localToWorld[0] *= invScale.x;
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localToWorld[1] *= invScale.y;
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localToWorld[2] *= invScale.z;
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return localToWorld;
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}
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// Transforms a vector from tangent space to world space
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float3 TransformTangentVectorToWorld(MaterialInput input, float3 tangentVector)
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{
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return mul(tangentVector, input.TBN);
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}
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// Transforms a vector from world space to tangent space
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float3 TransformWorldVectorToTangent(MaterialInput input, float3 worldVector)
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{
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return mul(input.TBN, worldVector);
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}
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// Transforms a vector from world space to view space
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float3 TransformWorldVectorToView(MaterialInput input, float3 worldVector)
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{
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return mul(worldVector, (float3x3)ViewMatrix);
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}
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// Transforms a vector from view space to world space
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float3 TransformViewVectorToWorld(MaterialInput input, float3 viewVector)
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{
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return mul((float3x3)ViewMatrix, viewVector);
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}
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// Transforms a vector from local space to world space
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float3 TransformLocalVectorToWorld(MaterialInput input, float3 localVector)
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{
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float3x3 localToWorld = (float3x3)GetInstanceTransform(input);
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//localToWorld = RemoveScaleFromLocalToWorld(localToWorld);
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return mul(localVector, localToWorld);
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}
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// Transforms a vector from local space to world space
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float3 TransformWorldVectorToLocal(MaterialInput input, float3 worldVector)
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{
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float3x3 localToWorld = (float3x3)GetInstanceTransform(input);
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//localToWorld = RemoveScaleFromLocalToWorld(localToWorld);
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return mul(localToWorld, worldVector);
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}
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// Gets the current object position (supports instancing)
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float3 GetObjectPosition(MaterialInput input)
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{
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return input.InstanceOrigin.xyz;
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}
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// Gets the current object size (supports instancing)
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float3 GetObjectSize(MaterialInput input)
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{
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float4x4 world = GetInstanceTransform(input);
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return GeometrySize * float3(world._m00, world._m11, world._m22);
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}
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// Get the current object random value (supports instancing)
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float GetPerInstanceRandom(MaterialInput input)
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{
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return input.InstanceParams.x;
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}
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// Get the current object LOD transition dither factor (supports instancing)
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float GetLODDitherFactor(MaterialInput input)
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{
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#if USE_DITHERED_LOD_TRANSITION
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return input.InstanceParams.y;
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#else
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return 0;
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#endif
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}
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// Gets the interpolated vertex color (in linear space)
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float4 GetVertexColor(MaterialInput input)
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{
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#if USE_VERTEX_COLOR
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return input.VertexColor;
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#else
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return 1;
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#endif
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}
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// Get material properties function (for vertex shader)
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Material GetMaterialVS(MaterialInput input)
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{
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@5
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}
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// Get material properties function (for domain shader)
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Material GetMaterialDS(MaterialInput input)
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{
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@6
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}
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// Get material properties function (for pixel shader)
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Material GetMaterialPS(MaterialInput input)
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{
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@4
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}
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// Fix line for errors/warnings for shader code from template
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#line 1000
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// Calculates the transform matrix from mesh tangent space to local space
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half3x3 CalcTangentToLocal(ModelInput input)
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{
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float bitangentSign = input.Tangent.w ? -1.0f : +1.0f;
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float3 normal = input.Normal.xyz * 2.0 - 1.0;
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float3 tangent = input.Tangent.xyz * 2.0 - 1.0;
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float3 bitangent = cross(normal, tangent) * bitangentSign;
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return float3x3(tangent, bitangent, normal);
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}
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half3x3 CalcTangentToWorld(in float4x4 world, in half3x3 tangentToLocal)
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{
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half3x3 localToWorld = RemoveScaleFromLocalToWorld((float3x3)world);
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return mul(tangentToLocal, localToWorld);
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}
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// Vertex Shader function for Forward/Depth Pass
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META_VS(IS_SURFACE, FEATURE_LEVEL_ES2)
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META_PERMUTATION_1(USE_INSTANCING=0)
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META_PERMUTATION_1(USE_INSTANCING=1)
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META_VS_IN_ELEMENT(POSITION, 0, R32G32B32_FLOAT, 0, 0, PER_VERTEX, 0, true)
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META_VS_IN_ELEMENT(TEXCOORD, 0, R16G16_FLOAT, 1, 0, PER_VERTEX, 0, true)
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META_VS_IN_ELEMENT(NORMAL, 0, R10G10B10A2_UNORM, 1, ALIGN, PER_VERTEX, 0, true)
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META_VS_IN_ELEMENT(TANGENT, 0, R10G10B10A2_UNORM, 1, ALIGN, PER_VERTEX, 0, true)
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META_VS_IN_ELEMENT(TEXCOORD, 1, R16G16_FLOAT, 1, ALIGN, PER_VERTEX, 0, true)
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META_VS_IN_ELEMENT(COLOR, 0, R8G8B8A8_UNORM, 2, 0, PER_VERTEX, 0, USE_VERTEX_COLOR)
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META_VS_IN_ELEMENT(ATTRIBUTE,0, R32G32B32A32_FLOAT,3, 0, PER_INSTANCE, 1, USE_INSTANCING)
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META_VS_IN_ELEMENT(ATTRIBUTE,1, R32G32B32A32_FLOAT,3, ALIGN, PER_INSTANCE, 1, USE_INSTANCING)
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META_VS_IN_ELEMENT(ATTRIBUTE,2, R32G32B32_FLOAT, 3, ALIGN, PER_INSTANCE, 1, USE_INSTANCING)
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META_VS_IN_ELEMENT(ATTRIBUTE,3, R32G32B32_FLOAT, 3, ALIGN, PER_INSTANCE, 1, USE_INSTANCING)
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META_VS_IN_ELEMENT(ATTRIBUTE,4, R16G16B16A16_FLOAT,3, ALIGN, PER_INSTANCE, 1, USE_INSTANCING)
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VertexOutput VS(ModelInput input)
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{
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VertexOutput output;
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// Compute world space vertex position
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float4x4 world = GetInstanceTransform(input);
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output.WorldPosition = mul(float4(input.Position.xyz, 1), world).xyz;
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// Compute clip space position
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output.Position = mul(float4(output.WorldPosition.xyz, 1), ViewProjectionMatrix);
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// Pass vertex attributes
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output.TexCoord = input.TexCoord;
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#if USE_VERTEX_COLOR
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output.VertexColor = input.Color;
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#endif
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#if USE_INSTANCING
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output.LightmapUV = input.LightmapUV * input.InstanceLightmapArea.zw + input.InstanceLightmapArea.xy;
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output.InstanceOrigin = world[3].xyz;
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output.InstanceParams = float2(input.InstanceOrigin.w, input.InstanceTransform1.w);
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#else
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output.LightmapUV = input.LightmapUV * LightmapArea.zw + LightmapArea.xy;
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output.InstanceOrigin = WorldMatrix[3].xyz;
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output.InstanceParams = float2(PerInstanceRandom, LODDitherFactor);
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#endif
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// Calculate tanget space to world space transformation matrix for unit vectors
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half3x3 tangentToLocal = CalcTangentToLocal(input);
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half3x3 tangentToWorld = CalcTangentToWorld(world, tangentToLocal);
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output.TBN = tangentToWorld;
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// Get material input params if need to evaluate any material property
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#if USE_POSITION_OFFSET || USE_TESSELLATION || USE_CUSTOM_VERTEX_INTERPOLATORS
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MaterialInput materialInput = GetMaterialInput(input, output, tangentToLocal[2].xyz);
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Material material = GetMaterialVS(materialInput);
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#endif
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// Apply world position offset per-vertex
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#if USE_POSITION_OFFSET
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output.WorldPosition += material.PositionOffset;
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output.Position = mul(float4(output.WorldPosition.xyz, 1), ViewProjectionMatrix);
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#endif
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// Get tessalation multiplier (per vertex)
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#if USE_TESSELLATION
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output.TessellationMultiplier = material.TessellationMultiplier;
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#endif
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// Copy interpolants for other shader stages
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#if USE_CUSTOM_VERTEX_INTERPOLATORS
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output.CustomVSToPS = material.CustomVSToPS;
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#endif
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return output;
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}
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#if USE_SKINNING
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// The skeletal bones matrix buffer (stored as 4x3, 3 float4 behind each other)
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Buffer<float4> BoneMatrices : register(t0);
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#if PER_BONE_MOTION_BLUR
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// The skeletal bones matrix buffer from the previous frame
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Buffer<float4> PrevBoneMatrices : register(t1);
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float3x4 GetPrevBoneMatrix(int index)
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{
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float4 a = PrevBoneMatrices[index * 3];
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float4 b = PrevBoneMatrices[index * 3 + 1];
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float4 c = PrevBoneMatrices[index * 3 + 2];
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return float3x4(a, b, c);
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}
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float3 SkinPrevPosition(ModelInput_Skinned input)
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{
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float4 position = float4(input.Position.xyz, 1);
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float3x4 boneMatrix = input.BlendWeights.x * GetPrevBoneMatrix(input.BlendIndices.x);
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boneMatrix += input.BlendWeights.y * GetPrevBoneMatrix(input.BlendIndices.y);
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boneMatrix += input.BlendWeights.z * GetPrevBoneMatrix(input.BlendIndices.z);
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boneMatrix += input.BlendWeights.w * GetPrevBoneMatrix(input.BlendIndices.w);
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return mul(boneMatrix, position);
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}
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#endif
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// Cached skinning data to avoid multiple calculation
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struct SkinningData
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{
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float3x4 BlendMatrix;
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};
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// Calculates the transposed transform matrix for the given bone index
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float3x4 GetBoneMatrix(int index)
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{
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float4 a = BoneMatrices[index * 3];
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float4 b = BoneMatrices[index * 3 + 1];
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float4 c = BoneMatrices[index * 3 + 2];
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return float3x4(a, b, c);
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}
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// Calculates the transposed transform matrix for the given vertex (uses blending)
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float3x4 GetBoneMatrix(ModelInput_Skinned input)
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{
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float3x4 boneMatrix = input.BlendWeights.x * GetBoneMatrix(input.BlendIndices.x);
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boneMatrix += input.BlendWeights.y * GetBoneMatrix(input.BlendIndices.y);
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|
boneMatrix += input.BlendWeights.z * GetBoneMatrix(input.BlendIndices.z);
|
|
boneMatrix += input.BlendWeights.w * GetBoneMatrix(input.BlendIndices.w);
|
|
return boneMatrix;
|
|
}
|
|
|
|
// Transforms the vertex position by weighted sum of the skinning matrices
|
|
float3 SkinPosition(ModelInput_Skinned input, SkinningData data)
|
|
{
|
|
float4 position = float4(input.Position.xyz, 1);
|
|
return mul(data.BlendMatrix, position);
|
|
}
|
|
|
|
// Transforms the vertex position by weighted sum of the skinning matrices
|
|
half3x3 SkinTangents(ModelInput_Skinned input, SkinningData data)
|
|
{
|
|
// Unpack vertex tangent frame
|
|
float bitangentSign = input.Tangent.w ? -1.0f : +1.0f;
|
|
float3 normal = input.Normal.xyz * 2.0 - 1.0;
|
|
float3 tangent = input.Tangent.xyz * 2.0 - 1.0;
|
|
|
|
// Apply skinning
|
|
tangent = mul(data.BlendMatrix, float4(tangent, 0));
|
|
normal = mul(data.BlendMatrix, float4(normal, 0));
|
|
|
|
float3 bitangent = cross(normal, tangent) * bitangentSign;
|
|
return half3x3(tangent, bitangent, normal);
|
|
}
|
|
|
|
// Vertex Shader function for Forward/Depth Pass (skinned mesh rendering)
|
|
META_VS(IS_SURFACE, FEATURE_LEVEL_ES2)
|
|
META_PERMUTATION_1(USE_SKINNING=1)
|
|
META_VS_IN_ELEMENT(POSITION, 0, R32G32B32_FLOAT, 0, 0, PER_VERTEX, 0, true)
|
|
META_VS_IN_ELEMENT(TEXCOORD, 0, R16G16_FLOAT, 0, ALIGN, PER_VERTEX, 0, true)
|
|
META_VS_IN_ELEMENT(NORMAL, 0, R10G10B10A2_UNORM, 0, ALIGN, PER_VERTEX, 0, true)
|
|
META_VS_IN_ELEMENT(TANGENT, 0, R10G10B10A2_UNORM, 0, ALIGN, PER_VERTEX, 0, true)
|
|
META_VS_IN_ELEMENT(BLENDINDICES, 0, R8G8B8A8_UINT, 0, ALIGN, PER_VERTEX, 0, true)
|
|
META_VS_IN_ELEMENT(BLENDWEIGHT, 0, R16G16B16A16_FLOAT,0, ALIGN, PER_VERTEX, 0, true)
|
|
VertexOutput VS_Skinned(ModelInput_Skinned input)
|
|
{
|
|
VertexOutput output;
|
|
|
|
// Perform skinning
|
|
SkinningData data;
|
|
data.BlendMatrix = GetBoneMatrix(input);
|
|
float3 position = SkinPosition(input, data);
|
|
half3x3 tangentToLocal = SkinTangents(input, data);
|
|
|
|
// Compute world space vertex position
|
|
float4x4 world = GetInstanceTransform(input);
|
|
output.WorldPosition = mul(float4(position, 1), world).xyz;
|
|
|
|
// Compute clip space position
|
|
output.Position = mul(float4(output.WorldPosition.xyz, 1), ViewProjectionMatrix);
|
|
|
|
// Pass vertex attributes
|
|
output.TexCoord = input.TexCoord;
|
|
#if USE_VERTEX_COLOR
|
|
output.VertexColor = float4(0, 0, 0, 1);
|
|
#endif
|
|
output.LightmapUV = float2(0, 0);
|
|
#if USE_INSTANCING
|
|
output.InstanceOrigin = world[3].xyz;
|
|
output.InstanceParams = float2(input.InstanceOrigin.w, input.InstanceTransform1.w);
|
|
#else
|
|
output.InstanceOrigin = WorldMatrix[3].xyz;
|
|
output.InstanceParams = float2(PerInstanceRandom, LODDitherFactor);
|
|
#endif
|
|
|
|
// Calculate tanget space to world space transformation matrix for unit vectors
|
|
half3x3 tangentToWorld = CalcTangentToWorld(world, tangentToLocal);
|
|
output.TBN = tangentToWorld;
|
|
|
|
// Get material input params if need to evaluate any material property
|
|
#if USE_POSITION_OFFSET || USE_TESSELLATION || USE_CUSTOM_VERTEX_INTERPOLATORS
|
|
MaterialInput materialInput = GetMaterialInput(output, input.Position.xyz, tangentToLocal[2].xyz);
|
|
Material material = GetMaterialVS(materialInput);
|
|
#endif
|
|
|
|
// Apply world position offset per-vertex
|
|
#if USE_POSITION_OFFSET
|
|
output.WorldPosition += material.PositionOffset;
|
|
output.Position = mul(float4(output.WorldPosition.xyz, 1), ViewProjectionMatrix);
|
|
#endif
|
|
|
|
// Get tessalation multiplier (per vertex)
|
|
#if USE_TESSELLATION
|
|
output.TessellationMultiplier = material.TessellationMultiplier;
|
|
#endif
|
|
|
|
// Copy interpolants for other shader stages
|
|
#if USE_CUSTOM_VERTEX_INTERPOLATORS
|
|
output.CustomVSToPS = material.CustomVSToPS;
|
|
#endif
|
|
|
|
return output;
|
|
}
|
|
|
|
#endif
|
|
|
|
#if USE_TESSELLATION
|
|
|
|
// Interpolants passed from the hull shader to the domain shader
|
|
struct TessalationHSToDS
|
|
{
|
|
float4 Position : SV_Position;
|
|
float3 WorldPosition : TEXCOORD0;
|
|
float2 TexCoord : TEXCOORD1;
|
|
float2 LightmapUV : TEXCOORD2;
|
|
#if USE_VERTEX_COLOR
|
|
half4 VertexColor : COLOR;
|
|
#endif
|
|
float3x3 TBN : TEXCOORD3;
|
|
#if USE_CUSTOM_VERTEX_INTERPOLATORS
|
|
float4 CustomVSToPS[CUSTOM_VERTEX_INTERPOLATORS_COUNT] : TEXCOORD9;
|
|
#endif
|
|
float3 InstanceOrigin : TEXCOORD6;
|
|
float2 InstanceParams : TEXCOORD7;
|
|
float TessellationMultiplier : TESS;
|
|
};
|
|
|
|
// Interpolants passed from the domain shader and to the pixel shader
|
|
struct TessalationDSToPS
|
|
{
|
|
float4 Position : SV_Position;
|
|
float3 WorldPosition : TEXCOORD0;
|
|
float2 TexCoord : TEXCOORD1;
|
|
float2 LightmapUV : TEXCOORD2;
|
|
#if USE_VERTEX_COLOR
|
|
half4 VertexColor : COLOR;
|
|
#endif
|
|
float3x3 TBN : TEXCOORD3;
|
|
#if USE_CUSTOM_VERTEX_INTERPOLATORS
|
|
float4 CustomVSToPS[CUSTOM_VERTEX_INTERPOLATORS_COUNT] : TEXCOORD9;
|
|
#endif
|
|
float3 InstanceOrigin : TEXCOORD6;
|
|
float2 InstanceParams : TEXCOORD7;
|
|
};
|
|
|
|
MaterialInput GetMaterialInput(TessalationDSToPS input)
|
|
{
|
|
MaterialInput result = (MaterialInput)0;
|
|
result.WorldPosition = input.WorldPosition;
|
|
result.TexCoord = input.TexCoord;
|
|
#if USE_LIGHTMAP
|
|
result.LightmapUV = input.LightmapUV;
|
|
#endif
|
|
#if USE_VERTEX_COLOR
|
|
result.VertexColor = input.VertexColor;
|
|
#endif
|
|
result.TBN = input.TBN;
|
|
result.TwoSidedSign = WorldDeterminantSign;
|
|
result.InstanceOrigin = input.InstanceOrigin;
|
|
result.InstanceParams = input.InstanceParams;
|
|
result.SvPosition = input.Position;
|
|
#if USE_CUSTOM_VERTEX_INTERPOLATORS
|
|
result.CustomVSToPS = input.CustomVSToPS;
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
struct TessalationPatch
|
|
{
|
|
float EdgeTessFactor[3] : SV_TessFactor;
|
|
float InsideTessFactor : SV_InsideTessFactor;
|
|
#if MATERIAL_TESSELLATION == MATERIAL_TESSELLATION_PN
|
|
float3 B210 : POSITION4;
|
|
float3 B120 : POSITION5;
|
|
float3 B021 : POSITION6;
|
|
float3 B012 : POSITION7;
|
|
float3 B102 : POSITION8;
|
|
float3 B201 : POSITION9;
|
|
float3 B111 : CENTER;
|
|
#endif
|
|
};
|
|
|
|
TessalationPatch HS_PatchConstant(InputPatch<VertexOutput, 3> input)
|
|
{
|
|
TessalationPatch output;
|
|
|
|
// Average tess factors along edges, and pick an edge tess factor for the interior tessellation
|
|
float4 tessellationMultipliers;
|
|
tessellationMultipliers.x = 0.5f * (input[1].TessellationMultiplier + input[2].TessellationMultiplier);
|
|
tessellationMultipliers.y = 0.5f * (input[2].TessellationMultiplier + input[0].TessellationMultiplier);
|
|
tessellationMultipliers.z = 0.5f * (input[0].TessellationMultiplier + input[1].TessellationMultiplier);
|
|
tessellationMultipliers.w = 0.333f * (input[0].TessellationMultiplier + input[1].TessellationMultiplier + input[2].TessellationMultiplier);
|
|
tessellationMultipliers = clamp(tessellationMultipliers, 1, MAX_TESSELLATION_FACTOR);
|
|
|
|
output.EdgeTessFactor[0] = tessellationMultipliers.x; // 1->2 edge
|
|
output.EdgeTessFactor[1] = tessellationMultipliers.y; // 2->0 edge
|
|
output.EdgeTessFactor[2] = tessellationMultipliers.z; // 0->1 edge
|
|
output.InsideTessFactor = tessellationMultipliers.w;
|
|
|
|
#if MATERIAL_TESSELLATION == MATERIAL_TESSELLATION_PN
|
|
// Calculate PN-Triangle coefficients
|
|
// Refer to Vlachos 2001 for the original formula
|
|
float3 p1 = input[0].WorldPosition;
|
|
float3 p2 = input[1].WorldPosition;
|
|
float3 p3 = input[2].WorldPosition;
|
|
float3 n1 = input[0].TBN[2];
|
|
float3 n2 = input[1].TBN[2];
|
|
float3 n3 = input[2].TBN[2];
|
|
|
|
// Calculate control points
|
|
output.B210 = (2.0f * p1 + p2 - dot((p2 - p1), n1) * n1) / 3.0f;
|
|
output.B120 = (2.0f * p2 + p1 - dot((p1 - p2), n2) * n2) / 3.0f;
|
|
output.B021 = (2.0f * p2 + p3 - dot((p3 - p2), n2) * n2) / 3.0f;
|
|
output.B012 = (2.0f * p3 + p2 - dot((p2 - p3), n3) * n3) / 3.0f;
|
|
output.B102 = (2.0f * p3 + p1 - dot((p1 - p3), n3) * n3) / 3.0f;
|
|
output.B201 = (2.0f * p1 + p3 - dot((p3 - p1), n1) * n1) / 3.0f;
|
|
float3 e = (output.B210 + output.B120 + output.B021 +
|
|
output.B012 + output.B102 + output.B201) / 6.0f;
|
|
float3 v = (p1 + p2 + p3) / 3.0f;
|
|
output.B111 = e + ((e - v) / 2.0f);
|
|
#endif
|
|
|
|
return output;
|
|
}
|
|
|
|
META_HS(USE_TESSELLATION, FEATURE_LEVEL_SM5)
|
|
META_HS_PATCH(TESSELLATION_IN_CONTROL_POINTS)
|
|
[domain("tri")]
|
|
[partitioning("fractional_odd")]
|
|
[outputtopology("triangle_cw")]
|
|
[maxtessfactor(MAX_TESSELLATION_FACTOR)]
|
|
[outputcontrolpoints(3)]
|
|
[patchconstantfunc("HS_PatchConstant")]
|
|
TessalationHSToDS HS(InputPatch<VertexOutput, TESSELLATION_IN_CONTROL_POINTS> input, uint ControlPointID : SV_OutputControlPointID)
|
|
{
|
|
TessalationHSToDS output;
|
|
|
|
// Pass through shader
|
|
#define COPY(thing) output.thing = input[ControlPointID].thing;
|
|
COPY(Position);
|
|
COPY(WorldPosition);
|
|
COPY(TexCoord);
|
|
COPY(LightmapUV);
|
|
#if USE_VERTEX_COLOR
|
|
COPY(VertexColor);
|
|
#endif
|
|
COPY(TBN);
|
|
COPY(InstanceOrigin);
|
|
COPY(InstanceParams);
|
|
COPY(TessellationMultiplier);
|
|
#if USE_CUSTOM_VERTEX_INTERPOLATORS
|
|
COPY(CustomVSToPS);
|
|
#endif
|
|
#undef COPY
|
|
|
|
return output;
|
|
}
|
|
|
|
#if MATERIAL_TESSELLATION == MATERIAL_TESSELLATION_PHONG
|
|
|
|
// Orthogonal projection on to plane
|
|
float3 ProjectOntoPlane(float3 planeNormal, float3 planePoint, float3 pointToProject)
|
|
{
|
|
return pointToProject - dot(pointToProject-planePoint, planeNormal) * planeNormal;
|
|
}
|
|
|
|
#endif
|
|
|
|
META_DS(USE_TESSELLATION, FEATURE_LEVEL_SM5)
|
|
[domain("tri")]
|
|
TessalationDSToPS DS(TessalationPatch constantData, float3 barycentricCoords : SV_DomainLocation, const OutputPatch<TessalationHSToDS, 3> input)
|
|
{
|
|
TessalationDSToPS output;
|
|
|
|
// Get the barycentric coords
|
|
float U = barycentricCoords.x;
|
|
float V = barycentricCoords.y;
|
|
float W = barycentricCoords.z;
|
|
|
|
// Interpolate patch attributes to generated vertices
|
|
#define INTERPOLATE(thing) output.thing = U * input[0].thing + V * input[1].thing + W * input[2].thing
|
|
#define COPY(thing) output.thing = input[0].thing
|
|
INTERPOLATE(Position);
|
|
#if MATERIAL_TESSELLATION == MATERIAL_TESSELLATION_PN
|
|
float UU = U * U;
|
|
float VV = V * V;
|
|
float WW = W * W;
|
|
float UU3 = UU * 3.0f;
|
|
float VV3 = VV * 3.0f;
|
|
float WW3 = WW * 3.0f;
|
|
|
|
// Interpolate using barycentric coordinates and PN Triangle control points
|
|
output.WorldPosition =
|
|
input[0].WorldPosition * UU * U +
|
|
input[1].WorldPosition * VV * V +
|
|
input[2].WorldPosition * WW * W +
|
|
constantData.B210 * UU3 * V +
|
|
constantData.B120 * VV3 * U +
|
|
constantData.B021 * VV3 * W +
|
|
constantData.B012 * WW3 * V +
|
|
constantData.B102 * WW3 * U +
|
|
constantData.B201 * UU3 * W +
|
|
constantData.B111 * 6.0f * W * U * V;
|
|
#else
|
|
INTERPOLATE(WorldPosition);
|
|
#endif
|
|
INTERPOLATE(TexCoord);
|
|
INTERPOLATE(LightmapUV);
|
|
#if USE_VERTEX_COLOR
|
|
INTERPOLATE(VertexColor);
|
|
#endif
|
|
INTERPOLATE(TBN[0]);
|
|
INTERPOLATE(TBN[1]);
|
|
INTERPOLATE(TBN[2]);
|
|
COPY(InstanceOrigin);
|
|
COPY(InstanceParams);
|
|
#if USE_CUSTOM_VERTEX_INTERPOLATORS
|
|
UNROLL
|
|
for (int i = 0; i < CUSTOM_VERTEX_INTERPOLATORS_COUNT; i++)
|
|
{
|
|
INTERPOLATE(CustomVSToPS[i]);
|
|
}
|
|
#endif
|
|
#undef INTERPOLATE
|
|
#undef COPY
|
|
|
|
// Interpolating normal can unnormalize it, so normalize it
|
|
output.TBN[0] = normalize(output.TBN[0]);
|
|
output.TBN[1] = normalize(output.TBN[1]);
|
|
output.TBN[2] = normalize(output.TBN[2]);
|
|
|
|
#if MATERIAL_TESSELLATION == MATERIAL_TESSELLATION_PHONG
|
|
// Orthogonal projection in the tangent planes
|
|
float3 posProjectedU = ProjectOntoPlane(input[0].TBN[2], input[0].WorldPosition, output.WorldPosition);
|
|
float3 posProjectedV = ProjectOntoPlane(input[1].TBN[2], input[1].WorldPosition, output.WorldPosition);
|
|
float3 posProjectedW = ProjectOntoPlane(input[2].TBN[2], input[2].WorldPosition, output.WorldPosition);
|
|
|
|
// Interpolate the projected points
|
|
output.WorldPosition = U * posProjectedU + V * posProjectedV + W * posProjectedW;
|
|
#endif
|
|
|
|
// Perform displacement mapping
|
|
#if USE_DISPLACEMENT
|
|
MaterialInput materialInput = GetMaterialInput(output);
|
|
Material material = GetMaterialDS(materialInput);
|
|
output.WorldPosition += material.WorldDisplacement;
|
|
#endif
|
|
|
|
// Recalculate the clip space position
|
|
output.Position = mul(float4(output.WorldPosition, 1), ViewProjectionMatrix);
|
|
|
|
return output;
|
|
}
|
|
|
|
#endif
|
|
|
|
#if USE_DITHERED_LOD_TRANSITION
|
|
|
|
void ClipLODTransition(PixelInput input)
|
|
{
|
|
float ditherFactor = input.InstanceParams.y;
|
|
if (abs(ditherFactor) > 0.001)
|
|
{
|
|
float randGrid = cos(dot(floor(input.Position.xy), float2(347.83452793, 3343.28371863)));
|
|
float randGridFrac = frac(randGrid * 1000.0);
|
|
half mask = (ditherFactor < 0.0) ? (ditherFactor + 1.0 > randGridFrac) : (ditherFactor < randGridFrac);
|
|
clip(mask - 0.001);
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
void ClipLODTransition(PixelInput input)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
// Pixel Shader function for Forward Pass
|
|
META_PS(USE_FORWARD, FEATURE_LEVEL_ES2)
|
|
float4 PS_Forward(PixelInput input) : SV_Target0
|
|
{
|
|
float4 output = 0;
|
|
|
|
// LOD masking
|
|
ClipLODTransition(input);
|
|
// TODO: make model LOD transition smoother for transparent materials by using opacity to reduce aliasing
|
|
|
|
// Get material parameters
|
|
MaterialInput materialInput = GetMaterialInput(input);
|
|
Material material = GetMaterialPS(materialInput);
|
|
|
|
// Masking
|
|
#if MATERIAL_MASKED
|
|
clip(material.Mask - MATERIAL_MASK_THRESHOLD);
|
|
#endif
|
|
|
|
// Add emissive light
|
|
output = float4(material.Emissive, material.Opacity);
|
|
|
|
#if MATERIAL_SHADING_MODEL != SHADING_MODEL_UNLIT
|
|
|
|
// Setup GBuffer data as proxy for lighting
|
|
GBufferSample gBuffer;
|
|
gBuffer.Normal = material.WorldNormal;
|
|
gBuffer.Roughness = material.Roughness;
|
|
gBuffer.Metalness = material.Metalness;
|
|
gBuffer.Color = material.Color;
|
|
gBuffer.Specular = material.Specular;
|
|
gBuffer.AO = material.AO;
|
|
gBuffer.ViewPos = mul(float4(materialInput.WorldPosition, 1), ViewMatrix).xyz;
|
|
#if MATERIAL_SHADING_MODEL == SHADING_MODEL_SUBSURFACE
|
|
gBuffer.CustomData = float4(material.SubsurfaceColor, material.Opacity);
|
|
#elif MATERIAL_SHADING_MODEL == SHADING_MODEL_FOLIAGE
|
|
gBuffer.CustomData = float4(material.SubsurfaceColor, material.Opacity);
|
|
#else
|
|
gBuffer.CustomData = float4(0, 0, 0, 0);
|
|
#endif
|
|
gBuffer.WorldPos = materialInput.WorldPosition;
|
|
gBuffer.ShadingModel = MATERIAL_SHADING_MODEL;
|
|
|
|
// Calculate lighting from a single directional light
|
|
float4 shadowMask = 1.0f;
|
|
if (DirectionalLight.CastShadows > 0)
|
|
{
|
|
LightShadowData directionalLightShadowData = GetDirectionalLightShadowData();
|
|
shadowMask.r = SampleShadow(DirectionalLight, directionalLightShadowData, DirectionalLightShadowMap, gBuffer, shadowMask.g);
|
|
}
|
|
float4 light = GetLighting(ViewPos, DirectionalLight, gBuffer, shadowMask, false, false);
|
|
|
|
// Calculate lighting from sky light
|
|
light += GetSkyLightLighting(SkyLight, gBuffer, SkyLightTexture);
|
|
|
|
// Calculate lighting from local lights
|
|
LOOP
|
|
for (uint localLightIndex = 0; localLightIndex < LocalLightsCount; localLightIndex++)
|
|
{
|
|
const LightData localLight = LocalLights[localLightIndex];
|
|
bool isSpotLight = localLight.SpotAngles.x > -2.0f;
|
|
shadowMask = 1.0f;
|
|
light += GetLighting(ViewPos, localLight, gBuffer, shadowMask, true, isSpotLight);
|
|
}
|
|
|
|
#if USE_REFLECTIONS
|
|
// Calculate reflections
|
|
light.rgb += GetEnvProbeLighting(ViewPos, EnvProbe, EnvironmentProbe, gBuffer) * light.a;
|
|
#endif
|
|
|
|
// Add lighting (apply ambient occlusion)
|
|
output.rgb += light.rgb * gBuffer.AO;
|
|
|
|
#if USE_FOG
|
|
// Calculate exponential height fog
|
|
float4 fog = GetExponentialHeightFog(ExponentialHeightFog, materialInput.WorldPosition, ViewPos, 0);
|
|
|
|
// Apply fog to the output color
|
|
#if MATERIAL_BLEND == MATERIAL_BLEND_OPAQUE
|
|
output = float4(output.rgb * fog.a + fog.rgb, output.a);
|
|
#elif MATERIAL_BLEND == MATERIAL_BLEND_TRANSPARENT
|
|
output = float4(output.rgb * fog.a + fog.rgb, output.a);
|
|
#elif MATERIAL_BLEND == MATERIAL_BLEND_ADDITIVE
|
|
output = float4(output.rgb * fog.a + fog.rgb, output.a * fog.a);
|
|
#elif MATERIAL_BLEND == MATERIAL_BLEND_MULTIPLY
|
|
output = float4(lerp(float3(1, 1, 1), output.rgb, fog.aaa * fog.aaa), output.a);
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
return output;
|
|
}
|
|
|
|
#if USE_DISTORTION
|
|
|
|
// Pixel Shader function for Distortion Pass
|
|
META_PS(USE_DISTORTION, FEATURE_LEVEL_ES2)
|
|
float4 PS_Distortion(PixelInput input) : SV_Target0
|
|
{
|
|
// LOD masking
|
|
ClipLODTransition(input);
|
|
|
|
// Get material parameters
|
|
MaterialInput materialInput = GetMaterialInput(input);
|
|
Material material = GetMaterialPS(materialInput);
|
|
|
|
// Masking
|
|
#if MATERIAL_MASKED
|
|
clip(material.Mask - MATERIAL_MASK_THRESHOLD);
|
|
#endif
|
|
|
|
float3 viewNormal = normalize(TransformWorldVectorToView(materialInput, material.WorldNormal));
|
|
float airIOR = 1.0f;
|
|
#if USE_PIXEL_NORMAL_OFFSET_REFRACTION
|
|
float3 viewVertexNormal = TransformWorldVectorToView(materialInput, TransformTangentVectorToWorld(materialInput, float3(0, 0, 1)));
|
|
float2 distortion = (viewVertexNormal.xy - viewNormal.xy) * (material.Refraction - airIOR);
|
|
#else
|
|
float2 distortion = viewNormal.xy * (material.Refraction - airIOR);
|
|
#endif
|
|
|
|
// Clip if the distortion distance (squared) is too small to be noticed
|
|
clip(dot(distortion, distortion) - 0.00001);
|
|
|
|
// Scale up for better precision in low/subtle refractions at the expense of artefacts at higher refraction
|
|
distortion *= 4.0f;
|
|
|
|
// Use separate storage for positive and negative offsets
|
|
float2 addOffset = max(distortion, 0);
|
|
float2 subOffset = abs(min(distortion, 0));
|
|
return float4(addOffset.x, addOffset.y, subOffset.x, subOffset.y);
|
|
}
|
|
|
|
#endif
|
|
|
|
// Pixel Shader function for Depth Pass
|
|
META_PS(true, FEATURE_LEVEL_ES2)
|
|
void PS_Depth(PixelInput input
|
|
#if GLSL
|
|
, out float4 OutColor : SV_Target0
|
|
#endif
|
|
)
|
|
{
|
|
// LOD masking
|
|
ClipLODTransition(input);
|
|
|
|
// Get material parameters
|
|
MaterialInput materialInput = GetMaterialInput(input);
|
|
Material material = GetMaterialPS(materialInput);
|
|
|
|
// Perform per pixel clipping
|
|
#if MATERIAL_MASKED
|
|
clip(material.Mask - MATERIAL_MASK_THRESHOLD);
|
|
#endif
|
|
clip(material.Opacity - MATERIAL_OPACITY_THRESHOLD);
|
|
|
|
#if GLSL
|
|
OutColor = 0;
|
|
#endif
|
|
}
|