diff --git a/.gitignore b/.gitignore
index 070094f9..03c3e8dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,4 +18,5 @@ npm-debug.log
 
 # Misc
 deploy_key
-deploy_key.pub
\ No newline at end of file
+deploy_key.pub
+.vscode/settings.json
diff --git a/lib/aglsl/AGALTokenizer.ts b/lib/aglsl/AGALTokenizer.ts
index 52c1f2a4..1f9e0a5d 100644
--- a/lib/aglsl/AGALTokenizer.ts
+++ b/lib/aglsl/AGALTokenizer.ts
@@ -12,17 +12,16 @@ export class AGALTokenizer {
 	}
 
 	public decribeAGALPart(array: ByteArray | Part): Description {
-		if (array instanceof ByteArray) {
+		if (array instanceof Part) {
+			const desc = this.decribeAGALByteArray(array.data);
+			desc.native = array.native;
+			return desc;
+		} else
 			return this.decribeAGALByteArray(array);
-		}
-
-		const desc = this.decribeAGALByteArray(array.data);
-		desc.native = array.native;
-
-		return  desc;
 	}
 
 	public decribeAGALByteArray(bytes: ByteArray): Description {
+		bytes.position = 0;
 		const header: Header = new Header();
 
 		if (bytes.readUnsignedByte() != 0xa0) {
diff --git a/lib/base/ContextGLProfile.ts b/lib/base/ContextGLProfile.ts
index 776ee8b0..593e4b87 100644
--- a/lib/base/ContextGLProfile.ts
+++ b/lib/base/ContextGLProfile.ts
@@ -2,5 +2,9 @@ export enum ContextGLProfile
 	{
 	BASELINE,
 	BASELINE_CONSTRAINED,
-	BASELINE_EXTENDED
+	BASELINE_EXTENDED,
+	STANDARD,
+	STANDARD_CONSTRAINED,
+	STANDARD_EXTENDED,
+	ENHANCED
 }
\ No newline at end of file
diff --git a/lib/webgl/ContextWebGL.ts b/lib/webgl/ContextWebGL.ts
index 51e240e9..2a3ac492 100644
--- a/lib/webgl/ContextWebGL.ts
+++ b/lib/webgl/ContextWebGL.ts
@@ -744,11 +744,11 @@ export class ContextWebGL implements IContextGL {
 	}
 
 	public setVertexBufferAt(
-		index: number, buffer: VertexBufferWebGL, bufferOffset: number = 0, format: number = 4
+		index: number, buffer: VertexBufferWebGL, bufferOffset: number = 0, format: number = 4, safeAttributeLocation:boolean = true
 	): void {
 		this.stateChangeCallback && this.stateChangeCallback('setVertexBufferAt');
-
-		const location = this._currentProgram ? this._currentProgram.getAttribLocation(index) : -1;
+		
+		const location = safeAttributeLocation ? this._currentProgram ? this._currentProgram.getAttribLocation(index) : -1 : index;
 		const gl = this._gl;
 
 		// when we try bind any buffers without VAO we should unbound VAO