The Tor Browser: content/canvas/test/webgl-conformance/conformance/context/context-lost.html@6474c204b198 (annotated)

content/canvas/test/webgl-conformance/conformance/context/context-lost.html@6474c204b198 (annotated)

content/canvas/test/webgl-conformance/conformance/context/context-lost.html

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 <!DOCTYPE html>
 <html>
 <head>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test.js"></script>
 <script src="../resources/webgl-test-utils.js"></script>
 <script>
 var wtu;
 var canvas;
 var gl;
 var shouldGenerateGLError;
 var extensionNames = [
     "WEBKIT_WEBGL_lose_context",
     "MOZ_WEBGL_lose_context",
 ];
 var extensionName;
 var extension;
 var buffer;
 var framebuffer;
 var program;
 var renderbuffer;
 var shader;
 var texture;
 var uniformLocation;
 var arrayBuffer;
 var arrayBufferView
 var image;
 var video;
 var canvas2d;
 var ctx2d;
 var imageData;
 var float32array;
 var int32array;
 function init()
 {
     wtu = WebGLTestUtils;
     canvas = document.getElementById("canvas");
     gl = wtu.create3DContext(canvas);
     shouldGenerateGLError = wtu.shouldGenerateGLError;
     description("Tests behavior under a lost context");
     if (window.initNonKhronosFramework) {
         window.initNonKhronosFramework(true);
     }
     // call testValidContext() before checking for the extension, because this is where we check
     // for the isContextLost() method, which we want to do regardless of the extension's presence.
     testValidContext();
     for (var ii = 0; ii < extensionNames.length; ++ii) {
         extension = gl.getExtension(extensionNames[ii]);
         if (extension) {
             extensionName = extensionNames[ii];
             break;
         }
     }
     if (!extension) {
         debug("Could not find lose_context extension under the following names: " + extensionNames.join(" "));
         finishTest();
         return false;
     }
     canvas.addEventListener("webglcontextlost", testLostContext, false);
     loseContext();
 }
 function loseContext()
 {
     debug("");
     debug("Lose context");
     // Note: this will cause the context to be lost, but the
     // webglcontextlost event listener to be queued.
     extension.loseContext();
     debug("");
 }
 function testValidContext()
 {
     debug("Test valid context");
     shouldBeFalse("gl.isContextLost()");
     arrayBuffer = new ArrayBuffer(4);
     arrayBufferView = new Int8Array(arrayBuffer);
     // Generate resources for testing.
     buffer = gl.createBuffer();
     gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
     framebuffer = gl.createFramebuffer();
     gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
     program = wtu.setupSimpleTextureProgram(gl);
     renderbuffer = gl.createRenderbuffer();
     gl.bindRenderbuffer(gl.RENDERBUFFER, renderbuffer);
     shader = gl.createShader(gl.VERTEX_SHADER);
     texture = gl.createTexture();
     gl.bindTexture(gl.TEXTURE_2D, texture);
     shouldBe("gl.getError()", "gl.NO_ERROR");
     // Test is queries that will later be false
     shouldGenerateGLError(gl, gl.NO_ERROR, "gl.enable(gl.BLEND)");
     shouldBeTrue("gl.isBuffer(buffer)");
     shouldBeTrue("gl.isEnabled(gl.BLEND)");
     shouldBeTrue("gl.isFramebuffer(framebuffer)");
     shouldBeTrue("gl.isProgram(program)");
     shouldBeTrue("gl.isRenderbuffer(renderbuffer)");
     shouldBeTrue("gl.isShader(shader)");
     shouldBeTrue("gl.isTexture(texture)");
 }
 function testLostContext()
 {
     debug("Test lost context");
     // Functions with special return values.
     shouldBeTrue("gl.isContextLost()");
     shouldBe("gl.getError()", "gl.CONTEXT_LOST_WEBGL");
     shouldBe("gl.getError()", "gl.NO_ERROR");
     shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_UNSUPPORTED");
     shouldBe("gl.getAttribLocation(program, 'u_modelViewProjMatrix')", "-1");
     shouldBe("gl.getVertexAttribOffset(0, gl.VERTEX_ATTRIB_ARRAY_POINTER)", "0");
     // Test the extension itself.
     shouldGenerateGLError(gl, gl.INVALID_OPERATION, "extension.loseContext()");
     image = document.createElement("img");
     video = document.createElement("video");
     canvas2d = document.createElement("canvas");
     ctx2d = canvas2d.getContext("2d");
     imageData = ctx2d.createImageData(1, 1);
     float32array = new Float32Array(1);
     int32array = new Int32Array(1);
     // Functions returning void should return immediately.
     // This is untestable, but we can at least be sure they cause no errors
     // and the codepaths are exercised.
     var voidTests = [
         "gl.activeTexture(gl.TEXTURE0)",
         "gl.attachShader(program, shader)",
         "gl.bindBuffer(gl.ARRAY_BUFFER, buffer)",
         "gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer)",
         "gl.bindRenderbuffer(gl.RENDERBUFFER, renderbuffer)",
         "gl.bindTexture(gl.TEXTURE_2D, texture)",
         "gl.blendColor(1.0, 1.0, 1.0, 1.0)",
         "gl.blendEquation(gl.FUNC_ADD)",
         "gl.blendEquationSeparate(gl.FUNC_ADD, gl.FUNC_ADD)",
         "gl.blendFunc(gl.ONE, gl.ONE)",
         "gl.blendFuncSeparate(gl.ONE, gl.ONE, gl.ONE, gl.ONE)",
         "gl.bufferData(gl.ARRAY_BUFFER, 0, gl.STATIC_DRAW)",
         "gl.bufferData(gl.ARRAY_BUFFER, arrayBufferView, gl.STATIC_DRAW)",
         "gl.bufferData(gl.ARRAY_BUFFER, arrayBuffer, gl.STATIC_DRAW)",
         "gl.bufferSubData(gl.ARRAY_BUFFRE, 0, arrayBufferView)",
         "gl.bufferSubData(gl.ARRAY_BUFFRE, 0, arrayBuffer)",
         "gl.clear(gl.COLOR_BUFFER_BIT)",
         "gl.clearColor(1, 1, 1, 1)",
         "gl.clearDepth(1)",
         "gl.clearStencil(0)",
         "gl.colorMask(1, 1, 1, 1)",
         "gl.compileShader(shader)",
         "gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, 0, 0, 0)",
         "gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, 0, 0)",
         "gl.cullFace(gl.FRONT)",
         "gl.deleteBuffer(buffer)",
         "gl.deleteFramebuffer(framebuffer)",
         "gl.deleteProgram(program)",
         "gl.deleteRenderbuffer(renderbuffer)",
         "gl.deleteShader(shader)",
         "gl.deleteTexture(texture)",
         "gl.depthFunc(gl.NEVER)",
         "gl.depthMask(0)",
         "gl.depthRange(0, 1)",
         "gl.detachShader(program, shader)",
         "gl.disable(gl.BLEND)",
         "gl.disableVertexAttribArray(0)",
         "gl.drawArrays(gl.POINTS, 0, 0)",
         "gl.drawElements(gl.POINTS, 0, gl.UNSIGNED_SHORT, 0)",
         "gl.enable(gl.BLEND)",
         "gl.enableVertexAttribArray(0)",
         "gl.finish()",
         "gl.flush()",
         "gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, renderbuffer)",
         "gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0)",
         "gl.frontFace(gl.CW)",
         "gl.generateMipmap(gl.TEXTURE_2D)",
         "gl.hint(gl.GENERATE_MIPMAP_HINT, gl.FASTEST)",
         "gl.lineWidth(0)",
         "gl.linkProgram(program)",
         "gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, 0)",
         "gl.polygonOffset(0, 0)",
         "gl.readPixels(0, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, arrayBufferView)",
         "gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, 0, 0)",
         "gl.sampleCoverage(0, 0)",
         "gl.scissor(0, 0, 0, 0)",
         "gl.shaderSource(shader, '')",
         "gl.stencilFunc(gl.NEVER, 0, 0)",
         "gl.stencilFuncSeparate(gl.FRONT, gl.NEVER, 0, 0)",
         "gl.stencilMask(0)",
         "gl.stencilMaskSeparate(gl.FRONT, 0)",
         "gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP)",
         "gl.stencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.KEEP)",
         "gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, arrayBufferView)",
         "gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, imageData)",
         "gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image)",
         "gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas)",
         "gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, video)",
         "gl.texParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)",
         "gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)",
         "gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, arrayBufferView)",
         "gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, imageData)",
         "gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, image)",
         "gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, canvas)",
         "gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, video)",
         "gl.uniform1f(uniformLocation, 0)",
         "gl.uniform1fv(uniformLocation, float32array)",
         "gl.uniform1fv(uniformLocation, [0])",
         "gl.uniform1i(uniformLocation, 0)",
         "gl.uniform1iv(uniformLocation, int32array)",
         "gl.uniform1iv(uniformLocation, [0])",
         "gl.uniform2f(uniformLocation, 0, 0)",
         "gl.uniform2fv(uniformLocation, float32array)",
         "gl.uniform2fv(uniformLocation, [0, 0])",
         "gl.uniform2i(uniformLocation, 0, 0)",
         "gl.uniform2iv(uniformLocation, int32array)",
         "gl.uniform2iv(uniformLocation, [0, 0])",
         "gl.uniform3f(uniformLocation, 0, 0, 0)",
         "gl.uniform3fv(uniformLocation, float32array)",
         "gl.uniform3fv(uniformLocation, [0, 0, 0])",
         "gl.uniform3i(uniformLocation, 0, 0, 0)",
         "gl.uniform3iv(uniformLocation, int32array)",
         "gl.uniform3iv(uniformLocation, [0, 0, 0])",
         "gl.uniform4f(uniformLocation, 0, 0, 0, 0)",
         "gl.uniform4fv(uniformLocation, float32array)",
         "gl.uniform4fv(uniformLocation, [0, 0, 0, 0])",
         "gl.uniform4i(uniformLocation, 0, 0, 0, 0)",
         "gl.uniform4iv(uniformLocation, int32array)",
         "gl.uniform4iv(uniformLocation, [0, 0, 0, 0])",
         "gl.uniformMatrix2fv(uniformLocation, false, float32array)",
         "gl.uniformMatrix2fv(uniformLocation, false, [0, 0, 0, 0])",
         "gl.uniformMatrix3fv(uniformLocation, false, float32array)",
         "gl.uniformMatrix3fv(uniformLocation, false, [0, 0, 0, 0, 0, 0, 0, 0, 0])",
         "gl.uniformMatrix4fv(uniformLocation, false, float32array)",
         "gl.uniformMatrix4fv(uniformLocation, false, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])",
         "gl.useProgram(program)",
         "gl.validateProgram(program)",
         "gl.vertexAttrib1f(0, 0)",
         "gl.vertexAttrib1fv(0, float32array)",
         "gl.vertexAttrib1fv(0, [0])",
         "gl.vertexAttrib2f(0, 0, 0)",
         "gl.vertexAttrib2fv(0, float32array)",
         "gl.vertexAttrib2fv(0, [0, 0])",
         "gl.vertexAttrib3f(0, 0, 0, 0)",
         "gl.vertexAttrib3fv(0, float32array)",
         "gl.vertexAttrib3fv(0, [0, 0, 0])",
         "gl.vertexAttrib4f(0, 0, 0, 0, 0)",
         "gl.vertexAttrib4fv(0, float32array)",
         "gl.vertexAttrib4fv(0, [0, 0, 0, 0])",
         "gl.vertexAttribPointer(0, 0, gl.FLOAT, false, 0, 0)",
         "gl.viewport(0, 0, 0, 0)",
     ];
     for (var i = 0; i < voidTests.length; ++i) {
         shouldGenerateGLError(gl, gl.NO_ERROR, voidTests[i]);
     }
     // Functions return nullable values should all return null.
     var nullTests = [
         "gl.createBuffer()",
         "gl.createFramebuffer()",
         "gl.createProgram()",
         "gl.createRenderbuffer()",
         "gl.createShader(gl.GL_VERTEX_SHADER)",
         "gl.createTexture()",
         "gl.getActiveAttrib(program, 0)",
         "gl.getActiveUniform(program, 0)",
         "gl.getAttachedShaders(program)",
         "gl.getBufferParameter(gl.ARRAY_BUFFER, gl.BUFFER_SIZE)",
         // Disabled pending test suite issue:
         // "gl.getContextAttributes()",
         "gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME)",
         "gl.getParameter(gl.CURRENT_PROGRAM)",
         "gl.getProgramInfoLog(program)",
         "gl.getProgramParameter(program, gl.LINK_STATUS)",
         "gl.getRenderbufferParameter(gl.RENDERBUFFER, gl.RENDERBUFFER_WIDTH)",
         "gl.getShaderInfoLog(shader)",
         "gl.getShaderParameter(shader, gl.SHADER_TYPE)",
         "gl.getShaderSource(shader)",
         "gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S)",
         "gl.getUniform(program, uniformLocation)",
         "gl.getUniformLocation(program, 'vPosition')",
         "gl.getVertexAttrib(0, gl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING)",
         "gl.getSupportedExtensions()",
         "gl.getExtension('" + extensionName + "')",
     ];
     for (var i = 0; i < nullTests.length; ++i) {
         shouldBeNull(nullTests[i]);
     }
     // "Is" queries should all return false.
     shouldBeFalse("gl.isBuffer(buffer)");
     shouldBeFalse("gl.isEnabled(gl.BLEND)");
     shouldBeFalse("gl.isFramebuffer(framebuffer)");
     shouldBeFalse("gl.isProgram(program)");
     shouldBeFalse("gl.isRenderbuffer(renderbuffer)");
     shouldBeFalse("gl.isShader(shader)");
     shouldBeFalse("gl.isTexture(texture)");
     shouldBe("gl.getError()", "gl.NO_ERROR");
     debug("");
     finishTest();
 }
 </script>
 </head>
 <body onload="init()">
 <div id="description"></div>
 <div id="console"></div>
 <canvas id="canvas">
 </body>
 </html>

The Tor Browser / annotate

content/canvas/test/webgl-conformance/conformance/context/context-lost.html@6474c204b198 (annotated)

content/canvas/test/webgl-conformance/conformance/context/context-lost.html