tor-browser

tex-image-with-video-test.js (5575B)

---

/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/

// This block needs to be outside the onload handler in order for this
// test to run reliably in WebKit's test harness (at least the
// Chromium port). https://bugs.webkit.org/show_bug.cgi?id=87448
initTestingHarness();

var old = debug;
var debug = function(msg) {
 console.log(msg);
 old(msg);
};

function generateTest(pixelFormat, pixelType, prologue) {
   var wtu = WebGLTestUtils;
   var gl = null;
   var textureLoc = null;
   var successfullyParsed = false;

   // Test each format separately because many browsers implement each
   // differently. Some might be GPU accelerated, some might not. Etc...
   var videos = [
     { src: "../resources/red-green.mp4"         , type: 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"', },
     { src: "../resources/red-green.webmvp8.webm", type: 'video/webm; codecs="vp8, vorbis"',           },
     { src: "../resources/red-green.webmvp9.webm", type: 'video/webm; codecs="vp9"',                   },
   ];

   var videoNdx = 0;
   var video;

   function runNextVideo() {
       if (video) {
           video.pause();
       }

       if (videoNdx == videos.length) {
           finishTest();
           return;
       }

       var info = videos[videoNdx++];
       debug("");
       debug("testing: " + info.type);
       video = document.createElement("video");
       video.muted = true;
       var canPlay = true;
       if (!video.canPlayType) {
         testFailed("video.canPlayType required method missing");
         runNextVideo();
         return;
       }

       if(!video.canPlayType(info.type).replace(/no/, '')) {
         debug(info.type + " unsupported");
         runNextVideo();
         return;
       };

       document.body.appendChild(video);
       video.type = info.type;
       video.crossOrigin = 'anonymous';
       video.src = info.src;
       wtu.startPlayingAndWaitForVideo(video, runTest);
   }

   var init = function()
   {
       description('Verify texImage2D and texSubImage2D code paths taking video elements (' + pixelFormat + '/' + pixelType + ')');

       gl = wtu.create3DContext("example");

       if (!prologue(gl)) {
           finishTest();
           return;
       }

       var program = wtu.setupTexturedQuad(gl);

       gl.clearColor(0,0,0,1);
       gl.clearDepth(1);

       textureLoc = gl.getUniformLocation(program, "tex");
       runNextVideo();
   }

   function runOneIteration(videoElement, useTexSubImage2D, flipY, topColor, bottomColor)
   {
       debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') +
             ' with flipY=' + flipY);
       gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
       // Disable any writes to the alpha channel
       gl.colorMask(1, 1, 1, 0);
       var texture = gl.createTexture();
       // Bind the texture to texture unit 0
       gl.bindTexture(gl.TEXTURE_2D, texture);
       // Set up texture parameters
       gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
       gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
       gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
       gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
       // Set up pixel store parameters
       gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
       gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
       // Upload the videoElement into the texture
       if (useTexSubImage2D) {
           // Initialize the texture to black first
           gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat],
                         videoElement.videoWidth, videoElement.videoHeight, 0,
                         gl[pixelFormat], gl[pixelType], null);
           gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl[pixelFormat], gl[pixelType], videoElement);
       } else {
           gl.texImage2D(gl.TEXTURE_2D, 0, gl[pixelFormat], gl[pixelFormat], gl[pixelType], videoElement);
       }

       var c = document.createElement("canvas");
       c.width = 16;
       c.height = 16;
       c.style.border = "1px solid black";
       var ctx = c.getContext("2d");
       ctx.drawImage(videoElement, 0, 0, 16, 16);
       document.body.appendChild(c);

       // Point the uniform sampler to texture unit 0
       gl.uniform1i(textureLoc, 0);
       // Draw the triangles
       wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
       // Check a few pixels near the top and bottom and make sure they have
       // the right color.
       var tolerance = 5;
       debug("Checking lower left corner");
       wtu.checkCanvasRect(gl, 4, 4, 2, 2, bottomColor,
                           "shouldBe " + bottomColor, tolerance);
       debug("Checking upper left corner");
       wtu.checkCanvasRect(gl, 4, gl.canvas.height - 8, 2, 2, topColor,
                           "shouldBe " + topColor, tolerance);
   }

   function runTest(videoElement)
   {
       var red = [255, 0, 0];
       var green = [0, 255, 0];
       runOneIteration(videoElement, false, true, red, green);
       runOneIteration(videoElement, false, false, green, red);
       runOneIteration(videoElement, true, true, red, green);
       runOneIteration(videoElement, true, false, green, red);

       wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");

       runNextVideo();
   }

   return init;
}