third_party/WebKit/LayoutTests/fast/canvas/webgl/canvas-zero-size.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4   <meta charset="utf-8">
   5     <title>Zero Size Canvas Test</title>
   6     <script src="../../../resources/js-test.js"></script>
   7     <script src="resources/webgl-test.js"> </script>
   8     <script src="resources/webgl-test-utils.js"> </script>
   9 </head>
  10 <body>
  11 <div id="description"></div>
  12 <div id="console"></div>
  13 <script>
  14 description("Tests that a zero size canvas does not fail.");
  15 var wtu = WebGLTestUtils;
  16 var canvas = document.createElement('canvas');
  17 var gl = wtu.create3DContext(canvas);
  18 canvas.width = 0;
  19 canvas.height = 0;
  20 gl.viewport(0, 0, 0, 0);
  21 var program = wtu.setupTexturedQuad(gl);
  22 shouldBeTrue("program != null");
  23 var tex = gl.createTexture();
  24 gl.bindTexture(gl.TEXTURE_2D, tex);
  25 var pixel = new Uint8Array([0, 255, 0, 255]);
  26 gl.texImage2D(
  27   gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixel);
  28 wtu.drawQuad(gl);
  29
  30 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
  31 </script>
  32
  33 </body>
  34 </html>