WebGLProgram: Compilation errors go to .diagnostics.

src/renderers/webgl/WebGLProgram.js

@@ -379,22 +379,52 @@ THREE.WebGLProgram = ( function () {
 
 		gl.linkProgram( program );
 
-		var programLogInfo = gl.getProgramInfoLog( program );
-		var vertexErrorLogInfo = gl.getShaderInfoLog( glVertexShader );
-		var fragmentErrorLogInfo = gl.getShaderInfoLog( glFragmentShader );
+		var programLog = gl.getProgramInfoLog( program );
+		var vertexLog = gl.getShaderInfoLog( glVertexShader );
+		var fragmentLog = gl.getShaderInfoLog( glFragmentShader );
+
+		var runnable = true;
+		var haveDiagnostics = true;
 
 		if ( gl.getProgramParameter( program, gl.LINK_STATUS ) === false ) {
 
-			console.error( 'THREE.WebGLProgram: shader error: ', gl.getError(), 'gl.VALIDATE_STATUS', gl.getProgramParameter( program, gl.VALIDATE_STATUS ), 'gl.getProgramInfoLog', programLogInfo, vertexErrorLogInfo, fragmentErrorLogInfo );
+			runnable = false;
+
+			console.error( 'THREE.WebGLProgram: shader error: ', gl.getError(), 'gl.VALIDATE_STATUS', gl.getProgramParameter( program, gl.VALIDATE_STATUS ), 'gl.getProgramInfoLog', programLog, vertexLog, fragmentLog );
+
+		} else if ( programLog !== '' ) {
+
+			console.warn( 'THREE.WebGLProgram: gl.getProgramInfoLog()', programLog );
+
+		} else if ( vertexLog === '' || fragmentLog === '' ) {
+
+			haveDiagnostics = false;
 
 		}
 
-		else if ( programLogInfo !== '' ) {
+		if ( haveDiagnostics ) this.diagnostics = {
+
+			runnable: runnable,
+			material: material,
+
+			programLog: programLog,
 
-			console.warn( 'THREE.WebGLProgram: gl.getProgramInfoLog()', programLogInfo );
+			vertexShader: {
+
+				log: vertexLog,
+				prefix: prefixVertex
+
+			},
+
+			fragmentShader: {
+
+				log: fragmentLog,
+				prefix: prefixFragment
 
 			}
 
+		};
+
 		// clean up
 
 		gl.deleteShader( glVertexShader );