Added lightmap multiplier to allow applying basic lighting on world geometry

src/Core/OpenGL/CShaderGenerator.cpp

@@ -329,6 +329,7 @@ bool CShaderGenerator::CreatePixelShader(const CMaterial& Mat)
                << "    vec4 KonstColors[4];\n"
                << "    vec4 TevColor;\n"
                << "    vec4 TintColor;\n"
+               << "    float LightmapMultiplier;\n"
                << "};\n\n";
 
     for (u32 iPass = 0; iPass < PassCount; iPass++)
@@ -374,6 +375,11 @@ bool CShaderGenerator::CreatePixelShader(const CMaterial& Mat)
         else if (PassType == "BLOL")
             ShaderCode << ".rgbg";
 
+        // Apply lightmap multiplier
+        if ( (PassType == "DIFF") ||
+             (PassType == "CUST" && (Mat.Options() & CMaterial::eLightmap) && iPass == 0) )
+            ShaderCode << " * LightmapMultiplier";
+
         ShaderCode << ";\n";
 
         ShaderCode << "    Konst = vec4(" << gkKonstColor[pPass->KColorSel()] << ", " << gkKonstAlpha[pPass->KAlphaSel()] << ");\n";
@@ -398,7 +404,7 @@ bool CShaderGenerator::CreatePixelShader(const CMaterial& Mat)
                    << ".rgb = ";
 
         ShaderCode << "clamp(vec3(TevInD.rgb + ((1.0 - TevInC.rgb) * TevInA.rgb + TevInC.rgb * TevInB.rgb))";
-        if ((PassType == "CLR ") && (Lightmap)) ShaderCode << "* 2.0"; // Apply tevscale 2.0 on the color pass if lightmap is present
+        if ((PassType == "CLR ") && (Lightmap)) ShaderCode << "* (2.0 - (1.0 - LightmapMultiplier))"; // Apply tevscale 2.0 on the color pass if lightmap is present. Scale so we don't apply if lightmaps are off.
         ShaderCode << ", vec3(0, 0, 0), vec3(1.0, 1.0, 1.0));\n";
 
         ShaderCode << "    // Alpha Combine\n"

src/Core/Render/CGraphics.cpp

@@ -166,8 +166,10 @@ void CGraphics::SetupAmbientColor()
 {
     if (sLightMode == eWorldLighting)
         sVertexBlock.COLOR0_Amb = sAreaAmbientColor * sWorldLightMultiplier;
-    else
+    else if (sLightMode == eBasicLighting)
         sVertexBlock.COLOR0_Amb = skDefaultAmbientColor;
+    else
+        sVertexBlock.COLOR0_Amb = CColor::skWhite;
 }
 
 void CGraphics::SetIdentityMVP()

src/Core/Render/CGraphics.h

@@ -56,6 +56,7 @@ public:
         CColor Konst[4];
         CColor TevColor;
         CColor TintColor;
+        float LightmapMultiplier;
     };
     static SPixelBlock sPixelBlock;
 

src/Core/Resource/Factory/CMaterialLoader.cpp

@@ -405,15 +405,16 @@ void CMaterialLoader::CreateCorruptionPasses(CMaterial *pMat)
         // Color Map (Diffuse)
         if (Type == "CLR ")
         {
+            pPass->SetRasSel(eRasColor0A0);
+
             if (Lightmap)
             {
-                pPass->SetColorInputs(eZeroRGB, eColor0RGB, eTextureRGB, ePrevRGB);
+                pPass->SetColorInputs(eZeroRGB, eColor0RGB, eTextureRGB, eZeroRGB);
             }
 
             else
             {
-                pPass->SetColorInputs(eZeroRGB, eRasRGB, eTextureRGB, ePrevRGB);
-                pPass->SetRasSel(eRasColor0A0);
+                pPass->SetColorInputs(eZeroRGB, eRasRGB, eTextureRGB, eZeroRGB);
             }
 
 
@@ -439,7 +440,7 @@ void CMaterialLoader::CreateCorruptionPasses(CMaterial *pMat)
         // Lightmap
         else if (Type == "DIFF")
         {
-            pPass->SetColorInputs(eZeroRGB, eKonstRGB, eTextureRGB, eZeroRGB);
+            pPass->SetColorInputs(eZeroRGB, eKonstRGB, eTextureRGB, eRasRGB);
             pPass->SetAlphaInputs(eZeroAlpha, eZeroAlpha, eZeroAlpha, eKonstAlpha);
             pPass->SetColorOutput(eColor0Reg);
             pPass->SetAlphaOutput(eColor0Reg);

src/Core/Scene/CModelNode.cpp

@@ -51,6 +51,7 @@ void CModelNode::Draw(FRenderOptions Options, int ComponentIndex, const SViewInf
 
     CGraphics::sPixelBlock.TevColor = CColor::skWhite;
     CGraphics::sPixelBlock.TintColor = TintColor(ViewInfo);
+    CGraphics::sPixelBlock.LightmapMultiplier = 1.f;
     LoadModelMatrix();
 
     if (ComponentIndex < 0)

src/Core/Scene/CSceneNode.cpp

@@ -187,8 +187,8 @@ void CSceneNode::LoadLights(const SViewInfo& ViewInfo)
     switch (Mode)
     {
     case CGraphics::eNoLighting:
-        // No lighting: default ambient color, no dynamic lights
-        CGraphics::sVertexBlock.COLOR0_Amb = CGraphics::skDefaultAmbientColor;
+        // No lighting: full white ambient, no dynamic lights
+        CGraphics::sVertexBlock.COLOR0_Amb = CColor::skWhite;
         break;
 
     case CGraphics::eBasicLighting:
@@ -206,6 +206,7 @@ void CSceneNode::LoadLights(const SViewInfo& ViewInfo)
         break;
     }
 
+    CGraphics::sPixelBlock.LightmapMultiplier = (Mode == CGraphics::eWorldLighting ? 1.f : 0.f);
     CGraphics::UpdateLightBlock();
 }
 

src/Core/Scene/CStaticNode.cpp

@@ -49,12 +49,25 @@ void CStaticNode::Draw(FRenderOptions Options, int ComponentIndex, const SViewIn
     if (!mpModel) return;
 
     bool IsLightingEnabled = CGraphics::sLightMode == CGraphics::eWorldLighting || ViewInfo.GameMode;
-    CGraphics::sVertexBlock.COLOR0_Amb = (IsLightingEnabled ? CColor::skBlack : CColor::skWhite);
+
+    if (IsLightingEnabled)
+    {
+        CGraphics::sNumLights = 0;
+        CGraphics::sVertexBlock.COLOR0_Amb = CColor::skBlack;
+        CGraphics::sPixelBlock.LightmapMultiplier = 1.0f;
+        CGraphics::UpdateLightBlock();
+    }
+
+    else
+    {
+        LoadLights(ViewInfo);
+        if (CGraphics::sLightMode == CGraphics::eNoLighting)
+            CGraphics::sVertexBlock.COLOR0_Amb = CColor::skWhite;
+    }
+
     float Mul = CGraphics::sWorldLightMultiplier;
     CGraphics::sPixelBlock.TevColor = CColor(Mul,Mul,Mul);
     CGraphics::sPixelBlock.TintColor = TintColor(ViewInfo);
-    CGraphics::sNumLights = 0;
-    CGraphics::UpdateLightBlock();
     LoadModelMatrix();
 
     if (ComponentIndex < 0)