fix dat pyramid boi (needed a ps cbuf)

hw3d/Pyramid.cpp

@@ -25,13 +25,17 @@ Pyramid::Pyramid( Graphics& gfx,std::mt19937& rng,
 			std::array<char,4> color;
 			char padding;
 		};
-		auto model = Cone::MakeTesselatedIndependentFaces<Vertex>( tdist( rng ) );
-		// set vertex colors for mesh
+		const auto tesselation = tdist( rng );
+		auto model = Cone::MakeTesselatedIndependentFaces<Vertex>( tesselation );
+		// set vertex colors for mesh (tip red blending to blue base)
 		for( auto& v : model.vertices )
 		{
-			v.color = { (char)40,(char)40,(char)255 };
+			v.color = { (char)10,(char)10,(char)255 };
+		}
+		for( int i = 0; i < tesselation; i++ )
+		{
+			model.vertices[i * 3].color = { (char)255,(char)10,(char)10 };
 		}
-		model.vertices.front().color = { (char)255,(char)20,(char)20 }; // very first vertex is the cone tip
 		// squash mesh a bit in the z direction
 		model.Transform( dx::XMMatrixScaling( 1.0f,1.0f,0.7f ) );
 		// add normals
@@ -56,6 +60,14 @@ Pyramid::Pyramid( Graphics& gfx,std::mt19937& rng,
 		AddStaticBind( std::make_unique<InputLayout>( gfx,ied,pvsbc ) );
 
 		AddStaticBind( std::make_unique<Topology>( gfx,D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST ) );
+		
+		struct PSMaterialConstant
+		{
+			float specularIntensity = 0.6f;
+			float specularPower = 30.0f;
+			float padding[2];
+		} colorConst;
+		AddStaticBind( std::make_unique<PixelConstantBuffer<PSMaterialConstant>>( gfx,colorConst,1u ) );
 	}
 	else
 	{