third_party/WebKit/LayoutTests/fast/canvas/webgl/index-validation-verifies-too-many-indices.html

   1 <html>
   2 <head>
   3 <script src="../../../resources/js-test.js"></script>
   4 <script src="resources/webgl-test.js"></script>
   5 </head>
   6 <body>
   7 <div id="description"></div>
   8 <div id="console"></div>
   9
  10 <script>
  11 description('Tests that index validation for drawElements does not examine too many indices');
  12
  13 if (window.internals)
  14     window.internals.settings.setWebGLErrorsToConsoleEnabled(false);
  15
  16 var context = create3DContext();
  17 var program = loadStandardProgram(context);
  18
  19 context.useProgram(program);
  20 var vertexObject = context.createBuffer();
  21 context.enableVertexAttribArray(0);
  22 context.bindBuffer(context.ARRAY_BUFFER, vertexObject);
  23 // 4 vertices -> 2 triangles
  24 context.bufferData(context.ARRAY_BUFFER, new Float32Array([ 0,0,0, 0,1,0, 1,0,0, 1,1,0 ]), context.STATIC_DRAW);
  25 context.vertexAttribPointer(0, 3, context.FLOAT, false, 0, 0);
  26
  27 var indexObject = context.createBuffer();
  28
  29 debug("Test out of range indices")
  30 context.bindBuffer(context.ELEMENT_ARRAY_BUFFER, indexObject);
  31 context.bufferData(context.ELEMENT_ARRAY_BUFFER, new Uint16Array([ 10000, 0, 1, 2, 3, 10000 ]), context.STATIC_DRAW);
  32 shouldGenerateGLError(context, context.NO_ERROR, "context.drawElements(context.TRIANGLE_STRIP, 4, context.UNSIGNED_SHORT, 2)");
  33 shouldGenerateGLError(context, context.INVALID_OPERATION, "context.drawElements(context.TRIANGLE_STRIP, 4, context.UNSIGNED_SHORT, 0)");
  34 shouldGenerateGLError(context, context.INVALID_OPERATION, "context.drawElements(context.TRIANGLE_STRIP, 4, context.UNSIGNED_SHORT, 4)");
  35
  36 debug("")
  37 </script>
  38
  39 </body>
  40 </html>