vertex colors

components/nifogre/ogre_nif_loader.cpp

@@ -226,7 +226,7 @@ void NIFLoader::createMaterial(const String &name,
                            const Vector &emissive,
                            float glossiness, float alpha,
                            int alphaFlags, float alphaTest,
-                           const String &texName)
+                           const String &texName, bool vertexColor)
 {
     if (texName.empty())
         return;
@@ -246,6 +246,9 @@ void NIFLoader::createMaterial(const String &name,
 
     instance->setProperty ("diffuseMap", sh::makeProperty(texName));
 
+    if (vertexColor)
+        instance->setProperty ("has_vertex_colour", sh::makeProperty<sh::BooleanValue>(new sh::BooleanValue(true)));
+
     // Add transparency if NiAlphaProperty was present
     if (alphaFlags != -1)
     {
@@ -272,7 +275,6 @@ void NIFLoader::createMaterial(const String &name,
 
     }
 
-
 /*
     if (!texName.empty())
     {
@@ -668,6 +670,8 @@ void NIFLoader::handleNiTriShape(NiTriShape *shape, int flags, BoundsFinder &bou
         NiTexturingProperty *t = NULL;
         NiMaterialProperty *m = NULL;
         NiAlphaProperty *a = NULL;
+        // can't make any sense of these values, so ignoring them for now
+        //NiVertexColorProperty *v = NULL;
 
         // Scan the property list for material information
         PropertyList &list = shape->props;
@@ -685,6 +689,8 @@ void NIFLoader::handleNiTriShape(NiTriShape *shape, int flags, BoundsFinder &bou
                 m = static_cast<NiMaterialProperty*>(pr);
             else if (pr->recType == RC_NiAlphaProperty)
                 a = static_cast<NiAlphaProperty*>(pr);
+            //else if (pr->recType == RC_NiVertexColorProperty)
+                //v = static_cast<NiVertexColorProperty*>(pr);
         }
 
         // Texture
@@ -755,7 +761,7 @@ void NIFLoader::handleNiTriShape(NiTriShape *shape, int flags, BoundsFinder &bou
                 {
                     //std::cout << "new";
                     createMaterial(material, d->ambient, d->diffuse, d->specular, d->emissive,
-                                    d->glossiness, d->alpha, alphaFlags, alphaTest, texName);
+                                   d->glossiness, d->alpha, alphaFlags, alphaTest, texName, shape->data->colors.length != 0);
                     MaterialMap.insert(std::make_pair(texName,material));
                 }
             }
@@ -771,7 +777,7 @@ void NIFLoader::handleNiTriShape(NiTriShape *shape, int flags, BoundsFinder &bou
                 }
 
                 createMaterial(material, one, one, zero, zero, 0.0, 1.0,
-                               alphaFlags, alphaTest, texName);
+                               alphaFlags, alphaTest, texName, shape->data->colors.length != 0);
             }
         }
     } // End of material block, if(!hidden) ...

components/nifogre/ogre_nif_loader.hpp

@@ -142,7 +142,8 @@ class NIFLoader : Ogre::ManualResourceLoader
                             const Nif::Vector &emissive,
                             float glossiness, float alpha,
                             int alphaFlags, float alphaTest,
-                            const Ogre::String &texName);
+                            const Ogre::String &texName,
+                            bool vertexColor);
 
         void findRealTexture(Ogre::String &texName);
 

files/materials/core.h

@@ -15,6 +15,8 @@
     #define shOutput(type, name) , out type name : TEXCOORD@shCounter(2)
 
     #define shNormalInput(type) , in type normal : NORMAL
+    
+    #define shColourInput(type) , in type colour : COLOR
 
     #ifdef SH_VERTEX_SHADER
 
@@ -40,7 +42,7 @@
 
         #define SH_BEGIN_PROGRAM \
             void main( \
-                out float4 oColor : COLOR
+                out float4 oColor0 : COLOR
 
         #define SH_START_PROGRAM \
             ) \
@@ -69,7 +71,9 @@
 
     #define shMatrixMult(m, v) m * v
 
+    // automatically recognized by ogre when the input name equals this
     #define shInputPosition vertex
+
     #define shOutputPosition gl_Position
     #define shOutputColor(num) oColor##num
 
@@ -78,7 +82,9 @@
     #define shInput(type, name) in type name;
     #define shOutput(type, name) out type name;
 
+    // automatically recognized by ogre when the input name equals this
     #define shNormalInput(type) in type normal;
+    #define shColourInput(type) in type colour;
 
     #ifdef SH_VERTEX_SHADER
 

files/materials/objects.shader

@@ -12,6 +12,8 @@
 #define NEED_DEPTH
 #endif
 
+#define HAS_VERTEXCOLOR @shPropertyBool(has_vertex_colour)
+
 #ifdef SH_VERTEX_SHADER
 
     SH_BEGIN_PROGRAM
@@ -22,6 +24,10 @@
         shOutput(float4, normalPassthrough)
 #ifdef NEED_DEPTH
         shOutput(float, depthPassthrough)
+#endif
+#if HAS_VERTEXCOLOR
+        shColourInput(float4)
+        shOutput(float4, colorPassthrough)
 #endif
     SH_START_PROGRAM
     {
@@ -31,6 +37,10 @@
 #ifdef NEED_DEPTH
         depthPassthrough = shOutputPosition.z;
 #endif
+
+#if HAS_VERTEXCOLOR
+        colorPassthrough = colour;
+#endif
     }
 
 #else
@@ -50,13 +60,20 @@
 #if FOG
         shUniform(float3 fogColor) @shAutoConstant(fogColor, fog_colour)
         shUniform(float4 fogParams) @shAutoConstant(fogParams, fog_params)
+#endif
 
+#ifdef HAS_VERTEXCOLOR
+        shInput(float4, colorPassthrough)
 #endif
     SH_START_PROGRAM
     {
         //shOutputColor(0) = float4((normalize(normalPassthrough.xyz)+float3(1.0,1.0,1.0)) / 2.f, 1.0);
         shOutputColor(0) = shSample(diffuseMap, UV);
 
+#if HAS_VERTEXCOLOR
+        shOutputColor(0).xyz *= colorPassthrough.xyz;
+#endif
+
 #if FOG
         float fogValue = shSaturate((depthPassthrough - fogParams.y) * fogParams.w);
         shOutputColor(0).xyz = shLerp (shOutputColor(0).xyz, fogColor, fogValue);