gl conversionwork - forward lit variant. do note, crashs with

`Engine\source\gfx\gfxDevice.cpp(837,0): {Fatal} - GFXDevice::setTexture - out of range stage! -1>16` though the shaders themselves are now in a compling state (ostensibly)

Engine/source/shaderGen/GLSL/shaderFeatureGLSL.cpp

@@ -2870,3 +2870,214 @@ void HardwareSkinningFeatureGLSL::processVert(Vector<ShaderComponent*> &componen
 
    output = meta;
 }
+
+//****************************************************************************
+// ReflectionProbeFeatHLSL
+//****************************************************************************
+
+ReflectionProbeFeatGLSL::ReflectionProbeFeatGLSL()
+   : mDep(ShaderGen::smCommonShaderPath + String("/gl/lighting.glsl"))
+{
+   addDependency(&mDep);
+}
+void ReflectionProbeFeatGLSL::processPix(Vector<ShaderComponent*>& componentList,
+   const MaterialFeatureData& fd)
+{
+   // Skip out on realtime lighting if we don't have a normal
+   // or we're doing some sort of baked lighting.
+   //
+   // TODO: We can totally detect for this in the material
+   // feature setup... we should move it out of here!
+   //
+   if (fd.features[MFT_LightMap] || fd.features[MFT_ToneMap] || fd.features[MFT_VertLit])
+      return;
+
+   ShaderConnector * connectComp = dynamic_cast<ShaderConnector*>(componentList[C_CONNECTOR]);
+
+   MultiLine * meta = new MultiLine;
+
+   // Now the wsPosition and wsView.
+   Var * wsPosition = getInWsPosition(componentList);
+   Var * wsView = getWsView(wsPosition, meta);
+
+   Var * albedo = (Var*)LangElement::find(getOutputTargetVarName(ShaderFeature::DefaultTarget));
+
+   //Reflection Probe WIP
+   U32 MAX_FORWARD_PROBES = 4;
+
+   Var * numProbes = new Var("numProbes", "float");
+   numProbes->uniform = true;
+   numProbes->constSortPos = cspPotentialPrimitive;
+
+   Var * cubeMips = new Var("cubeMips", "float");
+   cubeMips->uniform = true;
+   cubeMips->constSortPos = cspPotentialPrimitive;
+
+   Var * hasSkylight = new Var("hasSkylight", "float");
+   hasSkylight->uniform = true;
+   hasSkylight->constSortPos = cspPotentialPrimitive;
+
+   Var * inProbePosArray = new Var("inProbePosArray", "vec4");
+   inProbePosArray->arraySize = MAX_FORWARD_PROBES;
+   inProbePosArray->uniform = true;
+   inProbePosArray->constSortPos = cspPotentialPrimitive;
+
+   Var * inRefPosArray = new Var("inRefPosArray", "vec4");
+   inRefPosArray->arraySize = MAX_FORWARD_PROBES;
+   inRefPosArray->uniform = true;
+   inRefPosArray->constSortPos = cspPotentialPrimitive;
+
+   Var * bbMinArray = new Var("inProbeBoxMin", "vec4");
+   bbMinArray->arraySize = MAX_FORWARD_PROBES;
+   bbMinArray->uniform = true;
+   bbMinArray->constSortPos = cspPotentialPrimitive;
+
+   Var * bbMaxArray = new Var("inProbeBoxMax", "vec4");
+   bbMaxArray->arraySize = MAX_FORWARD_PROBES;
+   bbMaxArray->uniform = true;
+   bbMaxArray->constSortPos = cspPotentialPrimitive;
+
+   Var * probeConfigData = new Var("probeConfigData", "vec4");
+   probeConfigData->arraySize = MAX_FORWARD_PROBES;
+   probeConfigData->uniform = true;
+   probeConfigData->constSortPos = cspPotentialPrimitive;
+
+   Var * worldToObjArray = new Var("worldToObjArray", "mat4x4");
+   worldToObjArray->arraySize = MAX_FORWARD_PROBES;
+   worldToObjArray->uniform = true;
+   worldToObjArray->constSortPos = cspPotentialPrimitive;
+
+   // create texture var
+   Var* BRDFTexture = new Var;
+   BRDFTexture->setType("sampler2D");
+   BRDFTexture->setName("BRDFTexture");
+   BRDFTexture->uniform = true;
+   BRDFTexture->sampler = true;
+   BRDFTexture->constNum = Var::getTexUnitNum();     // used as texture unit num here
+   
+   Var * specularCubemapAR = new Var("specularCubemapAR", "samplerCubeArray");
+   specularCubemapAR->uniform = true;
+   specularCubemapAR->sampler = true;
+   specularCubemapAR->constNum = Var::getTexUnitNum();
+
+   Var * irradianceCubemapAR = new Var("irradianceCubemapAR", "samplerCubeArray");
+   irradianceCubemapAR->uniform = true;
+   irradianceCubemapAR->sampler = true;
+   irradianceCubemapAR->constNum = Var::getTexUnitNum();
+
+   Var * skylightSpecularMap = new Var("skylightSpecularMap", "samplerCube");
+   skylightSpecularMap->uniform = true;
+   skylightSpecularMap->sampler = true;
+   skylightSpecularMap->constNum = Var::getTexUnitNum();
+
+   Var * skylightIrradMap = new Var("skylightIrradMap", "samplerCube");
+   skylightIrradMap->uniform = true;
+   skylightIrradMap->sampler = true;
+   skylightIrradMap->constNum = Var::getTexUnitNum();
+
+
+   Var * inTex = getInTexCoord("texCoord", "vec2", componentList);
+   if (!inTex)
+      return;
+
+   Var * diffuseColor = (Var*)LangElement::find("diffuseColor");
+   if (!diffuseColor)
+   {
+      diffuseColor = new Var;
+      diffuseColor->setType("vec4");
+      diffuseColor->setName("diffuseColor");
+      LangElement* colorDecl = new DecOp(diffuseColor);
+      meta->addStatement(new GenOp("   @ = vec4(1.0,1.0,1.0,1.0);\r\n", colorDecl)); //default to flat white
+   }
+
+   Var* matinfo = (Var*)LangElement::find("specularColor");
+   if (!matinfo)
+   {
+      Var* metalness = (Var*)LangElement::find("metalness");
+      if (!metalness)
+      {
+         metalness = new Var("metalness", "float");
+         metalness->uniform = true;
+         metalness->constSortPos = cspPotentialPrimitive;
+      }
+
+      Var* smoothness = (Var*)LangElement::find("smoothness");
+      if (!smoothness)
+      {
+         smoothness = new Var("smoothness", "float");
+         smoothness->uniform = true;
+         smoothness->constSortPos = cspPotentialPrimitive;
+      }
+
+      matinfo = new Var("specularColor", "vec4");
+      LangElement* colorDecl = new DecOp(matinfo);
+      meta->addStatement(new GenOp("   @ = vec4(0.0,1.0,@,@);\r\n", colorDecl, smoothness, metalness)); //reconstruct matinfo, no ao darkening
+   }
+
+   Var* bumpNormal = (Var*)LangElement::find("bumpNormal");
+   if (!bumpNormal)
+   {
+      bumpNormal = new Var("bumpNormal", "vec4");
+      LangElement* colorDecl = new DecOp(bumpNormal);
+      meta->addStatement(new GenOp("   @ = vec4(1.0,0.0,0.0,0.0);\r\n", colorDecl)); //default to identity normal
+   }
+
+   Var* wsEyePos = (Var*)LangElement::find("eyePosWorld");
+
+   Var* worldToCamera = (Var*)LangElement::find("worldToCamera");
+   if (!worldToCamera)
+   {
+      worldToCamera = new Var;
+      worldToCamera->setType("mat4x4");
+      worldToCamera->setName("worldToCamera");
+      worldToCamera->uniform = true;
+      worldToCamera->constSortPos = cspPass;
+   }
+
+   //Reflection vec
+   Var* surface = new Var("surface", "Surface");
+   meta->addStatement(new GenOp("  @ = createForwardSurface(@,@,@,@,@,@,@,@);\r\n\n", new DecOp(surface), diffuseColor, bumpNormal, matinfo,
+      inTex, wsPosition, wsEyePos, wsView, worldToCamera));
+   String computeForwardProbes = String::String("   @.rgb += computeForwardProbes(@,@,@,@,@,@,@,@,@,\r\n\t\t");
+   computeForwardProbes += String::String("@,@,\r\n\t\t");
+   computeForwardProbes += String::String("@, @, \r\n\t\t");
+   computeForwardProbes += String::String("@,@).rgb; \r\n");
+
+   meta->addStatement(new GenOp(computeForwardProbes.c_str(), albedo, surface, cubeMips, numProbes, worldToObjArray, probeConfigData, inProbePosArray, bbMinArray, bbMaxArray, inRefPosArray,
+      hasSkylight, BRDFTexture,
+      skylightIrradMap, skylightSpecularMap,
+      irradianceCubemapAR, specularCubemapAR));
+
+   output = meta;
+}
+
+ShaderFeature::Resources ReflectionProbeFeatGLSL::getResources(const MaterialFeatureData& fd)
+{
+   Resources res;
+
+   res.numTex = 5;
+   res.numTexReg = 5;
+
+   return res;
+}
+
+void ReflectionProbeFeatGLSL::setTexData(Material::StageData& stageDat,
+   const MaterialFeatureData& stageFeatures,
+   RenderPassData& passData,
+   U32& texIndex)
+{
+   if (stageFeatures.features[MFT_ReflectionProbes])
+   {
+      passData.mSamplerNames[texIndex] = "BRDFTexture";
+      passData.mTexType[texIndex++] = Material::Standard;
+      // assuming here that it is a scenegraph cubemap
+      passData.mSamplerNames[texIndex] = "specularCubemapAR";
+      passData.mTexType[texIndex++] = Material::SGCube;
+      passData.mSamplerNames[texIndex] = "irradianceCubemapAR";
+      passData.mTexType[texIndex++] = Material::SGCube;
+      passData.mSamplerNames[texIndex] = "skylightSpecularMap";
+      passData.mTexType[texIndex++] = Material::SGCube;
+      passData.mSamplerNames[texIndex] = "skylightIrradMap";
+      passData.mTexType[texIndex++] = Material::SGCube;
+   }
+}

Engine/source/shaderGen/GLSL/shaderFeatureGLSL.h

@@ -673,22 +673,22 @@ public:
 /// Reflection Probes
 class ReflectionProbeFeatGLSL : public ShaderFeatureGLSL
 {
-public:
-   virtual void processVert(Vector<ShaderComponent*> &componentList,
-      const MaterialFeatureData &fd) {}
+protected:
+   ShaderIncludeDependency mDep;
 
-   virtual void processPix(Vector<ShaderComponent*> &componentList,
-      const MaterialFeatureData &fd) {}
+public:
+   ReflectionProbeFeatGLSL();
+   
+   virtual void processPix(Vector<ShaderComponent*>& componentList,
+      const MaterialFeatureData& fd);
 
-   virtual Resources getResources(const MaterialFeatureData &fd) {
-      return Resources();
-   }
+   virtual Resources getResources(const MaterialFeatureData& fd);
 
    // Sets textures and texture flags for current pass
-   virtual void setTexData(Material::StageData &stageDat,
-      const MaterialFeatureData &fd,
-      RenderPassData &passData,
-      U32 &texIndex) {}
+   virtual void setTexData(Material::StageData& stageDat,
+      const MaterialFeatureData& fd,
+      RenderPassData& passData,
+      U32& texIndex);
 
    virtual String getName()
    {

Engine/source/shaderGen/HLSL/shaderFeatureHLSL.cpp

@@ -2944,7 +2944,7 @@ void HardwareSkinningFeatureHLSL::processVert(   Vector<ShaderComponent*> &compo
 //****************************************************************************
 
 ReflectionProbeFeatHLSL::ReflectionProbeFeatHLSL()
-   : mDep(String(Con::getVariable("$Core::CommonShaderPath")) + String("/lighting.hlsl"))
+   : mDep(ShaderGen::smCommonShaderPath + String("/lighting.hlsl"))
 {
    addDependency(&mDep);
 }
@@ -2964,27 +2964,7 @@ void ReflectionProbeFeatHLSL::processPix(Vector<ShaderComponent*> &componentList
    ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>(componentList[C_CONNECTOR]);
 
    MultiLine *meta = new MultiLine;
-
-   // Look for a wsNormal or grab it from the connector.
-   /*Var *wsNormal = (Var*)LangElement::find("wsNormal");
-   if (!wsNormal)
-   {
-      wsNormal = connectComp->getElement(RT_TEXCOORD);
-      wsNormal->setName("wsNormal");
-      wsNormal->setStructName("IN");
-      wsNormal->setType("float3");
-
-      // If we loaded the normal its our responsibility
-      // to normalize it... the interpolators won't.
-      //
-      // Note we cast to half here to get partial precision
-      // optimized code which is an acceptable loss of
-      // precision for normals and performs much better
-      // on older Geforce cards.
-      //
-      meta->addStatement(new GenOp("   @ = normalize( half3( @ ) );\r\n", wsNormal, wsNormal));
-   }*/
-
+   
    // Now the wsPosition and wsView.
    Var *wsPosition = getInWsPosition(componentList);
    Var *wsView = getWsView(wsPosition, meta);

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

@@ -143,6 +143,26 @@ Surface createSurface(vec4 normDepth, sampler2D colorBuffer, sampler2D matInfoBu
 	return surface;
 }
 
+Surface createForwardSurface(vec4 baseColor, vec4 normal, vec4 pbrProperties, in vec2 uv, in vec3 wsPosition, in vec3 wsEyePos, in vec3 wsEyeRay, in mat4x4 invView)
+{
+	Surface surface;// = Surface();
+
+  surface.depth = 0;
+	surface.P = wsPosition;
+	surface.N = tMul(invView, vec4(normal.xyz,0)).xyz; //TODO move t3d to use WS normals
+	surface.V = normalize(wsEyePos - surface.P);
+	surface.baseColor = baseColor;
+  const float minRoughness=1e-4;
+	surface.roughness = clamp(1.0 - pbrProperties.b, minRoughness, 1.0); //t3d uses smoothness, so we convert to roughness.
+	surface.roughness_brdf = surface.roughness * surface.roughness;
+	surface.metalness = pbrProperties.a;
+  surface.ao = pbrProperties.g;
+  surface.matFlag = pbrProperties.r;
+
+	surface.Update();
+	return surface;
+}
+
 struct SurfaceToLight
 {
 	vec3 L;				// surface to light vector
@@ -312,15 +332,13 @@ vec3 boxProject(vec3 wsPosition, vec3 wsReflectVec, mat4 worldToObj, vec3 bbMin,
    return posonbox - refPosition.xyz;
 }
 
-/*vec4 computeForwardProbes(Surface surface,
-    float cubeMips, float numProbes, mat4 worldToObjArray[MAX_FORWARD_PROBES], vec4 probeConfigData[MAX_FORWARD_PROBES], 
+vec4 computeForwardProbes(Surface surface,
+    float cubeMips, float numProbes, mat4x4 worldToObjArray[MAX_FORWARD_PROBES], vec4 probeConfigData[MAX_FORWARD_PROBES], 
     vec4 inProbePosArray[MAX_FORWARD_PROBES], vec4 bbMinArray[MAX_FORWARD_PROBES], vec4 bbMaxArray[MAX_FORWARD_PROBES], vec4 inRefPosArray[MAX_FORWARD_PROBES],
-    float hasSkylight, samplerCube skylightIrradMap, samplerCube skylightSpecularMap,
-    sampler2D BRDFTexture, samplerCubeArray irradianceCubemapAR,
-    samplerCubeArray specularCubemapAR)
+    float hasSkylight, sampler2D BRDFTexture, 
+	samplerCube skylightIrradMap, samplerCube skylightSpecularMap,
+	samplerCubeArray irradianceCubemapAR, samplerCubeArray specularCubemapAR)
 {
-	return vec4(0,0,0,1);
-
   int i = 0;
    float blendFactor[MAX_FORWARD_PROBES];
    float blendSum = 0;
@@ -373,11 +391,8 @@ vec3 boxProject(vec3 wsPosition, vec3 wsReflectVec, mat4 worldToObj, vec3 bbMin,
       {
          blendFactor[i] *= invBlendSumWeighted;
          contribution[i] *= blendFactor[i];
-         //alpha -= contribution[i];
       }
    }
-   //else
-   //   alpha -= blendSum;
 
    vec3 irradiance = vec3(0, 0, 0);
    vec3 specular = vec3(0, 0, 0);
@@ -385,13 +400,14 @@ vec3 boxProject(vec3 wsPosition, vec3 wsReflectVec, mat4 worldToObj, vec3 bbMin,
    // Radiance (Specular)
    float lod = surface.roughness*cubeMips;
 
-   float alpha = 1;
+//1
+   float alpha = 1.0f;
    for (i = 0; i < numProbes; ++i)
    {
       float contrib = contribution[i];
       if (contrib != 0)
       {
-         int cubemapIdx = probeConfigData[i].a;
+         int cubemapIdx = int(probeConfigData[i].a);
          vec3 dir = boxProject(surface.P, surface.R, worldToObjArray[i], bbMinArray[i].xyz, bbMaxArray[i].xyz, inRefPosArray[i].xyz);
 
          irradiance += textureLod(irradianceCubemapAR, vec4(dir, cubemapIdx), 0).xyz * contrib;
@@ -409,12 +425,12 @@ vec3 boxProject(vec3 wsPosition, vec3 wsReflectVec, mat4 worldToObj, vec3 bbMin,
    vec3 F = FresnelSchlickRoughness(surface.NdotV, surface.f0, surface.roughness);
 
    //energy conservation
-   vec3 kD = 1.0.xxx - F;
+   vec3 kD = vec3(1.0,1.0,1.0) - F;
    kD *= 1.0 - surface.metalness;
 
    //apply brdf
    //Do it once to save on texture samples
-   vec2 brdf = texture(BRDFTexture, vec2(surface.roughness, surface.NdotV)).xy;
+   vec2 brdf = textureLod(BRDFTexture, vec2(surface.roughness, surface.NdotV),0).xy;
    specular *= brdf.x * F + brdf.y;
 
    //final diffuse color
@@ -423,4 +439,4 @@ vec3 boxProject(vec3 wsPosition, vec3 wsReflectVec, mat4 worldToObj, vec3 bbMin,
 
    finalColor = vec4(irradiance.rgb,1);
    return finalColor;
-}*/
+}

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

@@ -118,11 +118,8 @@ void main()
             {
                   blendFactor[i] *= invBlendSumWeighted;
                   contribution[i] *= blendFactor[i];
-                  alpha -= contribution[i];
             }
       }
-      else
-            alpha -= blendSum;
       
 #if DEBUGVIZ_ATTENUATION == 1
       float contribAlpha = 1;