skylight conversion

Templates/Full/game/shaders/common/lighting/advanced/gl/reflectionProbeP.glsl

@@ -24,7 +24,7 @@
 #include "farFrustumQuad.glsl"
 #include "../../../gl/torque.glsl"
 #include "../../../gl/lighting.glsl"
-#line 6
+#line 27
 
 in vec4 pos;
 in vec4 wsEyeDir;

Templates/Full/game/shaders/common/lighting/advanced/gl/skylightP.glsl

@@ -1,11 +1,30 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
 #include "../../../gl/hlslCompat.glsl"
 #include "shadergen:/autogenConditioners.h"
-
 #include "farFrustumQuad.glsl"
-#include "lightingUtils.glsl"
 #include "../../../gl/lighting.glsl"
 #include "../../../gl/torque.glsl"
-#line 8
+#line 27
 
 in vec4 pos;
 in vec4 wsEyeDir;
@@ -13,75 +32,51 @@ in vec4 ssPos;
 in vec4 vsEyeDir;
 
 uniform sampler2D deferredBuffer;
+uniform sampler2D colorBuffer;
 uniform sampler2D matInfoBuffer;
 uniform samplerCube cubeMap;
 uniform samplerCube irradianceCubemap;
 uniform sampler2D BRDFTexture;
-uniform float cubeMips;
-
 
 uniform vec4 rtParams0;
 
 uniform vec4 vsFarPlane;
-
-uniform float4x4 invViewMat;
-
+uniform mat4 cameraToWorld;
 uniform vec3 eyePosWorld;
 
-vec3 iblSpecular(vec3 v, vec3 n, float roughness)
+vec3 iblSpecular(in Surface surface, vec3 F)
 {
-	vec3 R = reflect(v, n); 
 	const float MAX_REFLECTION_LOD = 4.0;
-	vec3 prefilteredColor = TORQUE_TEXCUBELOD(cubeMap, vec4(R, roughness * MAX_REFLECTION_LOD)).rgb;
-	vec2 envBRDF  = TORQUE_TEX2D(BRDFTexture, vec2(max(dot(n, v), 0.0), roughness)).rg;
-	return prefilteredColor * (envBRDF.x + envBRDF.y);
-   //return prefilteredColor;
+	vec3 prefilteredColor = textureLod(cubeMap, surface.R, surface.roughness * MAX_REFLECTION_LOD).rgb;
+	vec2 envBRDF  = texture(BRDFTexture, vec2(surface.NdotV, surface.roughness)).rg;
+	return prefilteredColor * (F * envBRDF.x + envBRDF.y);
 }
 
 out vec4 OUT_col;
-out vec4 OUT_col1;
-
 void main()
 {
     // Compute scene UV
-    vec3 ssPos = IN.ssPos.xyz / IN.ssPos.w; 
-
-    //vec4 hardCodedRTParams0 = vec4(0,0.0277777780,1,0.972222209);
-    vec2 uvScene = getUVFromSSPos( ssPos, rtParams0 );
-
-    // Matinfo flags
-    vec4 matInfo = TORQUE_TEX2D( matInfoBuffer, uvScene ); 
-
-    // Sample/unpack the normal/z data
-    vec4 deferredSample = TORQUE_DEFERRED_UNCONDITION( deferredBuffer, uvScene );
-    vec3 normal = deferredSample.rgb;
-    float depth = deferredSample.a;
-    if (depth>0.9999)
-        return Output; 
-
-    // Need world-space normal.
-    vec3 wsNormal = mul(vec4(normal, 1), invViewMat).rgb;
-
-    vec3 eyeRay = getDistanceVectorToPlane( -vsFarPlane.w, IN.vsEyeDir.xyz, vsFarPlane );
-
-    vec3 wsEyeRay = mul(vec4(eyeRay, 1), invViewMat).rgb;
-
-    // Use eye ray to get ws pos
-    vec3 worldPos = vec3(eyePosWorld + wsEyeRay * depth);
-
-    vec3 reflectionVec = reflect(IN.wsEyeDir, vec4(wsNormal,1)).xyz;
-
-    float roughness = 1 - matInfo.b;
-
-    vec3 v = normalize(eyePosWorld - worldPos);
-
-    vec3 irradiance = TORQUE_TEXCUBE(irradianceCubemap, wsNormal).rgb;
-
-    vec3 specular = iblSpecular(wsEyeRay, wsNormal, roughness);
-
-
-    OUT_col = vec4(irradiance.rgb, 1);
-    OUT_col1 = vec4(specular.rgb, 1);
-	OUT_col *= matInfo.g;
-	OUT_col1 *= matInfo.g;
+    vec2 uvScene = getUVFromSSPos( ssPos.xyz/ssPos.w, rtParams0 );
+
+   //eye ray WS/LS
+   vec3 vsEyeRay = getDistanceVectorToPlane( -vsFarPlane.w, vsEyeDir.xyz, vsFarPlane );
+   vec3 wsEyeRay = tMul(cameraToWorld, vec4(vsEyeRay, 0)).xyz;
+   
+   //unpack normal and linear depth 
+   vec4 normDepth = deferredUncondition(deferredBuffer, uvScene);
+   
+   //create surface
+   Surface surface = createSurface( normDepth, colorBuffer, matInfoBuffer,
+                                    uvScene, eyePosWorld, wsEyeRay, cameraToWorld);
+
+   vec3 F = FresnelSchlickRoughness(surface.NdotV, surface.f0, surface.roughness);
+   vec3 irradiance = textureLod(irradianceCubemap, surface.N,0).rgb;
+   vec3 specular = iblSpecular(surface, F);
+   //energy conservation
+	vec3 kD = vec3(1.0) - F;
+	kD *= 1.0 - surface.metalness;
+   //final diffuse color
+   vec3 diffuse = kD * irradiance * surface.baseColor.rgb;
+
+   OUT_col = vec4(diffuse + specular * surface.ao, 0);
 }