From eb67afe5528aae8fdb288e20db5f13d2959625bd Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Wed, 4 Apr 2012 20:18:08 +0200
Subject: [PATCH] added MRT output to terrain material

---
 apps/openmw/mwrender/terrainmaterial.cpp | 42 ++++++++++++++----------
 1 file changed, 24 insertions(+), 18 deletions(-)

diff --git a/apps/openmw/mwrender/terrainmaterial.cpp b/apps/openmw/mwrender/terrainmaterial.cpp
index 922ea2280..867ec8e1f 100644
--- a/apps/openmw/mwrender/terrainmaterial.cpp
+++ b/apps/openmw/mwrender/terrainmaterial.cpp
@@ -557,7 +557,10 @@ namespace Ogre
                             params->setNamedAutoConstant("lightAttenuation"+StringConverter::toString(i), GpuProgramParameters::ACT_LIGHT_ATTENUATION, i);
                         //params->setNamedAutoConstant("lightSpecularColour"+StringConverter::toString(i), GpuProgramParameters::ACT_LIGHT_SPECULAR_COLOUR, i);
                 }
-                
+
+        if (Settings::Manager::getBool("multiple render targets", "Render"))
+            params->setNamedAutoConstant("far", GpuProgramParameters::ACT_FAR_CLIP_DISTANCE);
+
 		params->setNamedAutoConstant("eyePosObjSpace", GpuProgramParameters::ACT_CAMERA_POSITION_OBJECT_SPACE);
 		params->setNamedAutoConstant("fogColour", GpuProgramParameters::ACT_FOG_COLOUR);
 
@@ -753,12 +756,7 @@ namespace Ogre
 			ret->unload();
 		}
 		
-		if(prof->isLayerNormalMappingEnabled() || prof->isLayerParallaxMappingEnabled())
-			ret->setParameter("profiles", "ps_3_0 ps_2_x fp40 arbfp1");
-		//else
-			//ret->setParameter("profiles", "ps_3_0 ps_2_0 fp30 arbfp1");
-		else // fp30 doesn't work (black terrain)
-			ret->setParameter("profiles", "ps_3_0 ps_2_x fp40 arbfp1");
+        ret->setParameter("profiles", "ps_3_0 ps_2_x fp40 arbfp1");
 		ret->setParameter("entry_point", "main_fp");
 
 		return ret;
@@ -917,7 +915,7 @@ namespace Ogre
 
 
 		outStream << 
-			"float4 main_fp(\n"
+			"void main_fp(\n"
 			"float4 position : TEXCOORD0,\n";
 
 		uint texCoordSet = 1;
@@ -1034,8 +1032,15 @@ namespace Ogre
 				__FUNCTION__);
 		}
 
+        if (Settings::Manager::getBool("multiple render targets", "Render")) outStream <<
+            "   , out float4 oColor : COLOR \n"
+            "   , out float4 oColor1 : COLOR1 \n"
+            "   , uniform float far \n";
+        else outStream <<
+            "   , out float4 oColor : COLOR \n";
+
 		outStream << 
-			") : COLOR\n"
+			")\n"
 			"{\n"
 			"	float4 outputCol;\n"
 			"	float shadow = 1.0;\n"
@@ -1241,6 +1246,10 @@ namespace Ogre
 			"	oPos = mul(viewProjMatrix, worldPos);\n"
 			"	oUVMisc.xy = uv.xy;\n";
 
+        outStream <<
+            "	// pass cam depth\n"
+            "	oUVMisc.z = oPos.z;\n";
+
 		bool fog = terrain->getSceneManager()->getFogMode() != FOG_NONE && tt != RENDER_COMPOSITE_MAP;
 		if (fog)
 		{
@@ -1337,7 +1346,12 @@ namespace Ogre
 		}
 
 		// Final return
-		outStream << "  return outputCol;\n"
+		outStream << "  oColor = outputCol;\n";
+
+        if (Settings::Manager::getBool("multiple render targets", "Render")) outStream <<
+            "   oColor1 = float4(uvMisc.z / far, 0, 0, 1); \n";
+
+        outStream
 			<< "}\n";
 
 	}
@@ -1511,14 +1525,6 @@ namespace Ogre
 			}
 		}
 
-
-		if (prof->getReceiveDynamicShadowsPSSM())
-		{
-			outStream <<
-				"	// pass cam depth\n"
-				"	oUVMisc.z = oPos.z;\n";
-		}
-
 	}
 	//---------------------------------------------------------------------
 	void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateFpDynamicShadowsParams(