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Assets/Alloy/Shaders/Framework/Deferred.cginc

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+// Alloy Physical Shader Framework
+// Copyright 2013-2017 RUST LLC.
+// http://www.alloy.rustltd.com/
+
+/////////////////////////////////////////////////////////////////////////////////
+/// @file Deferred.cginc
+/// @brief Deferred passes uber-header.
+/////////////////////////////////////////////////////////////////////////////////
+
+#ifndef ALLOY_SHADERS_FRAMEWORK_DEFERRED_CGINC
+#define ALLOY_SHADERS_FRAMEWORK_DEFERRED_CGINC
+
+#define A_DEFERRED_PASS
+#define A_TANGENT_TO_WORLD_ON
+#define A_REFLECTION_PROBES_ON
+
+// Headers both for this file, and for all Definition and Feature modules.
+#include "Assets/Alloy/Shaders/Config.cginc"
+#include "Assets/Alloy/Shaders/Framework/LightingImpl.cginc"
+
+#include "UnityCG.cginc"
+#include "UnityDeferredLibrary.cginc"
+#include "UnityGlobalIllumination.cginc"
+#include "UnityImageBasedLighting.cginc"
+#include "UnityShaderVariables.cginc"
+#include "UnityStandardBRDF.cginc"
+#include "UnityStandardUtils.cginc"
+
+sampler2D _CameraGBufferTexture0;
+sampler2D _CameraGBufferTexture1;
+sampler2D _CameraGBufferTexture2;
+
+/// Creates a surface description from a Unity G-Buffer.
+/// @param[in,out] i    Unity deferred vertex format.
+/// @return             Material surface data.
+ASurface aDeferredSurface(
+    inout unity_v2f_deferred i)
+{
+    ASurface s = aNewSurface();
+
+    // Set vertex data.
+    i.ray = i.ray * (_ProjectionParams.z / i.ray.z);
+    s.screenPosition = i.uv;
+    s.screenUv = s.screenPosition.xy / s.screenPosition.w;
+
+    // Convert G-Buffer to surface.
+    float depth = Linear01Depth(SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, s.screenUv));
+    half4 gbuffer0 = tex2D(_CameraGBufferTexture0, s.screenUv);
+    half4 gbuffer1 = tex2D(_CameraGBufferTexture1, s.screenUv);
+    half4 gbuffer2 = tex2D(_CameraGBufferTexture2, s.screenUv);
+    float4 vpos = float4(i.ray * depth, 1.0f);
+
+    s.viewDepth = vpos.z;
+    s.positionWorld = mul(unity_CameraToWorld, vpos).xyz;
+    s.viewDirWorld = normalize(UnityWorldSpaceViewDir(s.positionWorld));
+
+    s.albedo = gbuffer0.rgb;
+    s.specularOcclusion = gbuffer0.a;
+    s.f0 = gbuffer1.rgb;
+    s.roughness = 1.0h - gbuffer1.a;
+    s.beckmannRoughness = aLinearToBeckmannRoughness(s.roughness);
+    s.normalWorld = A_NW(s, normalize(gbuffer2.xyz * 2.0h - 1.0h));
+    s.materialType = gbuffer2.w;
+    aPreLighting(s);
+    return s;
+}
+
+#endif // ALLOY_SHADERS_FRAMEWORK_DEFERRED_CGINC