named buffers (fixed issues with tangents)

h3d/prim/Polygon.hx

@@ -1,7 +1,7 @@
 package h3d.prim;
 import h3d.col.Point;
 
-class Polygon extends Primitive {
+class Polygon extends MeshPrimitive {
 
 	public var points : Array<Point>;
 	public var normals : Array<Point>;
@@ -30,14 +30,28 @@ class Polygon extends Primitive {
 		dispose();
 
 		var size = 3;
-		if( normals != null )
+		var names = ["position"];
+		var positions = [0];
+		if( normals != null ) {
+			names.push("normal");
+			positions.push(size);
 			size += 3;
-		if( tangents != null )
+		}
+		if( tangents != null ) {
+			names.push("tangent");
+			positions.push(size);
 			size += 3;
-		if( uvs != null )
+		}
+		if( uvs != null ) {
+			names.push("uv");
+			positions.push(size);
 			size += 2;
-		if( colors != null )
+		}
+		if( colors != null ) {
+			names.push("color");
+			positions.push(size);
 			size += 3;
+		}
 
 		var buf = new hxd.FloatBuffer();
 		for( k in 0...points.length ) {
@@ -74,6 +88,9 @@ class Polygon extends Primitive {
 		if( normals == null || tangents != null ) flags.push(RawFormat);
 		buffer = h3d.Buffer.ofFloats(buf, size, flags);
 
+		for( i in 0...names.length )
+			addBuffer(names[i], buffer, positions[i]);
+
 		if( idx != null )
 			indexes = h3d.Indexes.alloc(idx);
 	}
@@ -256,6 +273,18 @@ class Polygon extends Primitive {
 		return poly;
 	}
 
+	override function render( engine : h3d.Engine ) {
+		if( buffer == null || buffer.isDisposed() )
+			alloc(engine);
+		var bufs = getBuffers(engine);
+		if( indexes != null )
+			engine.renderMultiBuffers(bufs, indexes);
+		else if( buffer.flags.has(Quads) )
+			engine.renderMultiBuffers(bufs, engine.mem.quadIndexes, 0, triCount());
+		else
+			engine.renderMultiBuffers(bufs, engine.mem.triIndexes, 0, triCount());
+	}
+
 	#if hxbit
 	override function customSerialize(ctx:hxbit.Serializer) {
 		ctx.addInt(points.length);