diff --git a/test/webGL-Test.html b/test/webGL-Test.html
index d7a10e1..9882632 100644
--- a/test/webGL-Test.html
+++ b/test/webGL-Test.html
@@ -8,7 +8,16 @@
 </head>
 <body>
 <h1>webGL test</h1>
-Checks if the addon also supports webGL.
+<h2>Expected result</h2>
+<ul>
+	<li>both webGL versions should be supported (unless you disabled it in the browser settings) - reload if one is showing "not supported"</li>
+	<li>upon page reload the hashes change</li>
+	<li>upon page reload some of the parameters change</li>
+	<li>the "vendor" und "renderer" (also unmasked) parameters reflect the values you chose for them</li>
+</ul>
+<h3>Support</h3>
 <div id="output"></div>
+<h3>Parameters</h3>
+<div id="parameters"></div>
 <script src="webGL-Test.js"></script>
 </body></html>
\ No newline at end of file
diff --git a/test/webGL-Test.js b/test/webGL-Test.js
index e3ab7ea..0834f12 100644
--- a/test/webGL-Test.js
+++ b/test/webGL-Test.js
@@ -22,9 +22,72 @@
 				values[pixels[i]] = (values[pixels[i]] || 0) + 1;
 				max = Math.max(max, values[pixels[i]]);
 			}
-
-			output.textContent = context + ": " + (max !== 3 * values[255]? "": "not ") + "supported";
-			output.title = JSON.stringify(values);
+			const parameters = [];
+			for (var name in gl){
+				if (name.toUpperCase() === name){
+					var value = gl.getParameter(gl[name]);
+					if (value !== null){
+						parameters.push({name: name, value: value});
+					}
+				}
+			}
+			const debugExtension = gl.getExtension("WEBGL_debug_renderer_info");
+			
+			for (name in debugExtension){
+				if (name.toUpperCase() === name){
+					value = gl.getParameter(debugExtension[name]);
+					if (value !== null){
+						parameters.push({name: name, value: value});
+					}
+				}
+			}
+			var frontParameters = ["VENDOR", "RENDERER", "UNMASKED_VENDOR_WEBGL", "UNMASKED_RENDERER_WEBGL"];
+			parameters.sort(function(a, b){
+				var frontA = frontParameters.indexOf(a.name);
+				var frontB = frontParameters.indexOf(b.name);
+				if (frontA !== -1){
+					if (frontB !== -1){
+						return frontA - frontB;
+					}
+					else {
+						return -1;
+					}
+				}
+				else {
+					if (frontB !== -1){
+						return 1;
+					}
+					else {
+						return a.name < b.name? -1: 1;
+					}
+				}
+			});
+			if (context === "webgl2"){
+				var parameterOutput = document.createElement("table");
+				document.getElementById("parameters").appendChild(parameterOutput);
+				parameters.forEach(function(parameter){
+					var parameterRow = document.createElement("tr");
+					parameterRow.innerHTML = "<td>" + parameter.name + "</td><td>" + parameter.value + "</td>";
+					parameterOutput.appendChild(parameterRow);
+				});
+			}
+			crypto.subtle.digest("SHA-256", new TextEncoder("utf-8").encode(parameters.map(function(parameter){
+				return parameter.name + ": " + parameter.value;
+			}).join(",")))
+				.then(function(hash){
+					var chunks = [];
+					(new Uint32Array(hash)).forEach(function(num){
+						chunks.push(num.toString(16));
+					});
+					return chunks.map(function(chunk){
+						return "0".repeat(8 - chunk.length) + chunk;
+					}).join("");
+				}).then(function(hash)  {
+					output.textContent = context + ": " +
+						(max !== 3 * values[255]? "": "not ") + "supported " +
+						"(parameter hash: " + hash + ")";
+					output.title = JSON.stringify(values);
+				});
 		}
 		catch (e){
 			output.textContent = context + ": ERROR";
