1 files changed, 129 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/js/tests/invalid-vertex-attrib-test.js b/dom/canvas/test/webgl-conf/checkout/js/tests/invalid-vertex-attrib-test.js
new file mode 100644
index 0000000000..b28c484843
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/js/tests/invalid-vertex-attrib-test.js
@@ -0,0 +1,129 @@
+var createInvalidAttribTestFn = (function() {
+
+async function testPreserveDrawingBufferTrue(gl, drawFn, clear) {
+  debug('');
+  debug(`test preserveDrawingBuffer: true with ${drawFn.name} ${clear ? 'with' : 'without'} clear`);
+
+  if (clear) {
+    gl.clearColor(0, 0, 0, 0);
+    gl.clear(gl.COLOR_BUFFER_BIT);
+  }
+
+  const skipTest = drawFn(gl);
+  if (skipTest) {
+    debug('skipped: extension does not exist');
+    return;
+  }
+
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "canvas should be red");
+
+  await waitForComposite();
+
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "canvas should be red");
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+}
+
+function setupWebGL({
+    webglVersion,
+    shadersFn,
+    attribs,
+}) {
+    const positionBuf = gl.createBuffer();
+    gl.bindBuffer(gl.ARRAY_BUFFER, positionBuf);
+    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
+      -1, -1,
+       1, -1,
+      -1,  1,
+      -1,  1,
+       1, -1,
+       1,  1,
+    ]), gl.STATIC_DRAW);
+    gl.enableVertexAttribArray(0);
+    gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
+    const indexBuf = gl.createBuffer();
+    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuf);
+    gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint8Array([0, 1, 2, 3, 4, 5]), gl.STATIC_DRAW);
+    return gl;
+}
+
+function createInvalidAttribTestFn(gl) {
+  const vs = `
+  attribute vec4 vPosition;
+  void main()
+  {
+      gl_Position = vPosition;
+  }
+  `;
+
+  const fs = `
+  precision mediump float;
+  void main()
+  {
+      gl_FragColor = vec4(1, 0, 0, 1);
+  }
+  `
+
+  const program = wtu.setupProgram(gl, [vs, fs], ["vPosition"]);
+  if (!program) {
+    debug(`program failed to compile: ${wtu.getLastError()}`);
+  }
+
+  const positionBuffer = gl.createBuffer();
+  gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
+  gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
+    -1, -1,
+     1, -1,
+    -1,  1,
+    -1,  1,
+     1, -1,
+     1,  1,
+  ]), gl.STATIC_DRAW);
+
+  const indexBuffer = gl.createBuffer();
+  gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuffer);
+  gl.bufferData(gl.ELEMENT_ARRAY_BUFFER,
+                new Uint8Array([0, 1, 2, 3, 4, 5]),
+                gl.STATIC_DRAW);
+
+  return async function invalidAttribTestFn(drawFn) {
+    debug('');
+
+    // reset attribs
+    gl.bindBuffer(gl.ARRAY_BUFFER, null);
+    const numAttribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
+    for (let i = 0; i < numAttribs; ++i) {
+      gl.disableVertexAttribArray(i);
+      gl.vertexAttribPointer(1, 1, gl.FLOAT, false, 0, 0);
+    }
+
+    debug(`test ${drawFn.name} draws with valid attributes`);
+    gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
+    gl.enableVertexAttribArray(0);
+    gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+
+    gl.clearColor(0, 0, 0, 0,);
+    gl.clear(gl.COLOR_BUFFER_BIT);
+    wtu.checkCanvas(gl, [0, 0, 0, 0], "canvas should be zero");
+
+    drawFn(gl);
+
+    wtu.checkCanvas(gl, [255, 0, 0, 255], "canvas should be red");
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+
+    debug(`test ${drawFn.name} generates INVALID_OPERATION draws with enabled attribute no buffer bound`);
+    gl.enableVertexAttribArray(1);
+
+    gl.clearColor(0, 0, 0, 0,);
+    gl.clear(gl.COLOR_BUFFER_BIT);
+    wtu.checkCanvas(gl, [0, 0, 0, 0], "canvas should be zero");
+
+    drawFn(gl);
+
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "should generate INVALID_OPERATION");
+    wtu.checkCanvas(gl, [0, 0, 0, 0], "canvas should be zero");
+  };
+}
+
+return createInvalidAttribTestFn;
+}());