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Add support for Unity URP SSAO in "Depth normal" mode (#225) #226

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Add support for Unity URP SSAO in "Depth normal" mode (#225) #226

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119 changes: 119 additions & 0 deletions com.microsoft.mrtk.graphicstools.unity/Runtime/Shaders/GraphicsToolsStandard.shader
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Original file line number Diff line number Diff line change
Expand Up @@ -182,6 +182,7 @@ Shader "Graphics Tools/Standard"
#pragma multi_compile_instancing
#pragma multi_compile _ LIGHTMAP_ON
#pragma multi_compile_local _ _CLIPPING_PLANE _CLIPPING_SPHERE _CLIPPING_BOX
#pragma multi_compile_fragment _ _SCREEN_SPACE_OCCLUSION

#pragma shader_feature_local_fragment _CLIPPING_BORDER

Expand Down Expand Up @@ -229,6 +230,124 @@ Shader "Graphics Tools/Standard"

ENDHLSL
}

// From Packages/com.unity.render-pipelines.universal/Shader/Lit.hlsl
Pass
{
Name "DepthOnly"
Tags
{
"LightMode" = "DepthOnly"
}

// -------------------------------------
// Render State Commands
ZWrite On
ColorMask R
Cull[_Cull]

HLSLPROGRAM
#if UNITY_VERSION >= 202230
#pragma exclude_renderers gles gles3 glcore
#pragma target 4.5
#else
#pragma target 2.0
#endif

// -------------------------------------
// Shader Stages
#pragma vertex DepthOnlyVertex
#pragma fragment DepthOnlyFragment

// -------------------------------------
// Material Keywords
#pragma shader_feature_local _ALPHATEST_ON
#pragma shader_feature_local_fragment _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A

#if UNITY_VERSION >= 202200
// -------------------------------------
// Unity defined keywords
#pragma multi_compile _ LOD_FADE_CROSSFADE
#endif

//--------------------------------------
// GPU Instancing
#pragma multi_compile_instancing
#if UNITY_VERSION >= 202230
#include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DOTS.hlsl"
#else
#pragma multi_compile _ DOTS_INSTANCING_ON
#endif

// -------------------------------------
// Includes
#include "Packages/com.unity.render-pipelines.universal/Shaders/LitInput.hlsl"
#include "Packages/com.unity.render-pipelines.universal/Shaders/DepthOnlyPass.hlsl"
ENDHLSL
}

// From Packages/com.unity.render-pipelines.universal/Shader/Lit.hlsl
// This pass is used when drawing to a _CameraNormalsTexture texture
Pass
{
Name "DepthNormals"
Tags
{
"LightMode" = "DepthNormals"
}

// -------------------------------------
// Render State Commands
ZWrite On
Cull[_Cull]

HLSLPROGRAM
#if UNITY_VERSION >= 202230
#pragma target 2.0
#else
#pragma exclude_renderers gles gles3 glcore
#pragma target 4.5
#endif

// -------------------------------------
// Shader Stages
#pragma vertex DepthNormalsVertex
#pragma fragment DepthNormalsFragment

// -------------------------------------
// Material Keywords
#pragma shader_feature_local _NORMALMAP
#pragma shader_feature_local _PARALLAXMAP
#pragma shader_feature_local _ _DETAIL_MULX2 _DETAIL_SCALED
#pragma shader_feature_local _ALPHATEST_ON
#pragma shader_feature_local_fragment _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A

#if UNITY_VERSION >= 202200
// -------------------------------------
// Unity defined keywords
#pragma multi_compile _ LOD_FADE_CROSSFADE
#endif
#if UNITY_VERSION >= 202230
// -------------------------------------
// Universal Pipeline keywords
#include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/RenderingLayers.hlsl"
#endif

//--------------------------------------
// GPU Instancing
#pragma multi_compile_instancing
#if UNITY_VERSION >= 202230
#include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DOTS.hlsl"
#else
#pragma multi_compile _ DOTS_INSTANCING_ON
#endif

// -------------------------------------
// Includes
#include "Packages/com.unity.render-pipelines.universal/Shaders/LitInput.hlsl"
#include "Packages/com.unity.render-pipelines.universal/Shaders/LitDepthNormalsPass.hlsl"
ENDHLSL
}
}

/// <summary>
Expand Down
11 changes: 10 additions & 1 deletion com.microsoft.mrtk.graphicstools.unity/Runtime/Shaders/GraphicsToolsStandardProgram.hlsl
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Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,10 @@
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl"
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"
#ifdef _SCREEN_SPACE_OCCLUSION
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/AmbientOcclusion.hlsl"
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderVariablesFunctions.hlsl"
#endif
#else
#include "UnityCG.cginc"
#include "UnityStandardConfig.cginc"
Expand Down Expand Up @@ -801,6 +805,12 @@ half4 PixelStage(Varyings input, bool facing : SV_IsFrontFace) : SV_Target
half3 reflection = GTGlossyEnvironmentReflection(reflectVector, GTPerceptualSmoothnessToPerceptualRoughness(_Smoothness), occlusion);
output.rgb = (albedo.rgb * 0.5h) + (reflection * (_Smoothness + _Metallic) * 0.5h);
#endif

#if defined(_SCREEN_SPACE_OCCLUSION)
float2 normalizedScreenSpaceUV = GetNormalizedScreenSpaceUV(input.position);
AmbientOcclusionFactor aoFactor = GetScreenSpaceAmbientOcclusion(normalizedScreenSpaceUV);
output.rgb *= aoFactor.directAmbientOcclusion;
#endif

// Fresnel lighting.
#if defined(_RIM_LIGHT)
Expand Down Expand Up @@ -836,7 +846,6 @@ half4 PixelStage(Varyings input, bool facing : SV_IsFrontFace) : SV_Target
incident.y * incident.y * _EnvironmentColorY +
incident.z * incident.z * _EnvironmentColorZ;
output.rgb += environmentColor * max(0.0, dot(incident, worldNormal) + _EnvironmentColorThreshold) * _EnvironmentColorIntensity;

#endif

#if defined(_NEAR_PLANE_FADE)
Expand Down