Revert "Revert "Merge pull request #75 from teamfisk/NormalSpecularMapping""

This reverts commit b56824786c.

resources/Shaders/ExplosionEffect.geom.glsl

@@ -17,15 +17,21 @@ uniform bool ExponentialAccelaration;
 in VertexData{
 	vec3 Position;
 	vec3 Normal;
+	vec3 Tangent;
+	vec3 BiTangent;
 	vec2 TextureCoordinate;
 	vec4 ExplosionColor;
+	float ExplosionPercentageElapsed;
 }Input[];
 
 out VertexData{
 	vec3 Position;
 	vec3 Normal;
+	vec3 Tangent;
+	vec3 BiTangent;
 	vec2 TextureCoordinate;
 	vec4 ExplosionColor;
+	float ExplosionPercentageElapsed;
 }Output;
 
 layout(triangles) in;
@@ -114,12 +120,17 @@ void main()
 		{
 			// calculate the max distance (s) the triangle will move
 			float s = (randomVelocity.x * ExplosionDuration) + (0.5 * a * pow(ExplosionDuration, 2));
+			float te = (length(triangleCenter2ExplosionRadius) / s);
 			
-			Output.ExplosionColor = EndColor * (length(triangleCenter2ExplosionRadius) / s);
+			Output.ExplosionColor = EndColor;
+			Output.ExplosionPercentageElapsed = te;
+
 		}
 		else
 		{
-			Output.ExplosionColor = EndColor * timePercetage;
+			Output.ExplosionColor = EndColor;
+			Output.ExplosionPercentageElapsed = timePercetage;
+
 		}
 		
 		// for every vertex on the triangle...
@@ -132,6 +143,8 @@ void main()
 			Output.Normal = Input[i].Normal;
 			Output.Position = Input[i].Position;
 			Output.TextureCoordinate = Input[i].TextureCoordinate;
+			Output.Tangent = Input[i].Tangent;
+			Output.BiTangent = Input[i].BiTangent;
 			
 			// convert to model space for the gravity to always be in -y
 			vec4 ExplodedPositionInModelSpace = M * vec4(ExplodedPosition, 1.0);
@@ -154,11 +167,14 @@ void main()
 		// if explosion color should be affected by distance instead of time...
 		if (ColorByDistance == true)
 		{
-			Output.ExplosionColor = vec4(0.0);
+			Output.ExplosionColor = EndColor;
+			Output.ExplosionPercentageElapsed = 0.0;
 		}
 		else
 		{
-			Output.ExplosionColor = EndColor * timePercetage;
+			Output.ExplosionColor = EndColor;
+			Output.ExplosionPercentageElapsed = timePercetage;
+
 		}
 		
 		// for every vertex on the triangle...
@@ -168,7 +184,9 @@ void main()
 			Output.Normal = Input[i].Normal;
 			Output.Position = Input[i].Position;
 			Output.TextureCoordinate = Input[i].TextureCoordinate;
-			
+			Output.Tangent = Input[i].Tangent;
+			Output.BiTangent = Input[i].BiTangent;
+
 			// no change in position, pass through vertex
 			gl_Position = gl_in[i].gl_Position;
 			EmitVertex();