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Unified Diff: third_party/webgl/sdk/tests/conformance/context/context-lost-restored.html

Issue 9373009: Check in webgl conformance tests r16844 from khronos. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/
Patch Set: Created 8 years, 10 months ago
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Index: third_party/webgl/sdk/tests/conformance/context/context-lost-restored.html
===================================================================
--- third_party/webgl/sdk/tests/conformance/context/context-lost-restored.html (revision 0)
+++ third_party/webgl/sdk/tests/conformance/context/context-lost-restored.html (revision 0)
@@ -0,0 +1,213 @@
+<!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 = WebGLTestUtils;
+var canvas;
+var gl;
+var shouldGenerateGLError;
+var extensionNames = [
+ "WEBKIT_WEBGL_lose_context",
+ "MOZ_WEBGL_lose_context",
+];
+var extension;
+var bufferObjects;
+var program;
+var texture;
+var texColor = [255, 10, 20, 255];
+var allowRestore;
+var contextLostEventFired;
+var contextRestoredEventFired;
+
+function init()
+{
+ if (window.initNonKhronosFramework) {
+ window.initNonKhronosFramework(true);
+ }
+
+ description("Tests behavior under a restored context.");
+
+ shouldGenerateGLError = wtu.shouldGenerateGLError;
+ testLosingContext();
+}
+
+function setupTest()
+{
+ canvas = document.createElement("canvas");
+ canvas.width = 1;
+ canvas.height = 1;
+ gl = wtu.create3DContext(canvas);
+ for (var ii = 0; ii < extensionNames.length; ++ii) {
+ extension = gl.getExtension(extensionNames[ii]);
+ if (extension)
+ break;
+ }
+ if (!extension) {
+ debug("Could not find lose_context extension under the following names: " + extensionNames.join(" "));
+ return false;
+ }
+ return true;
+}
+
+function testLosingContext()
+{
+ if (!setupTest())
+ finishTest();
+
+ debug("Test losing a context and inability to restore it.");
+
+ canvas.addEventListener("webglcontextlost", function(e) {
+ testLostContext(e);
+ // restore the context after this event has exited.
+ setTimeout(function() {
+ // we didn't call prevent default so we should not be able to restore the context
+ shouldGenerateGLError(gl, gl.INVALID_OPERATION, "extension.restoreContext()");
+ testLosingAndRestoringContext();
+ }, 0);
+ });
+ canvas.addEventListener("webglcontextrestored", testShouldNotRestoreContext);
+ allowRestore = false;
+ contextLostEventFired = false;
+ contextRestoredEventFired = false;
+
+ testOriginalContext();
+ extension.loseContext();
+ // The context should be lost immediately.
+ shouldBeTrue("gl.isContextLost()");
+ shouldBe("gl.getError()", "gl.CONTEXT_LOST_WEBGL");
+ shouldBe("gl.getError()", "gl.NO_ERROR");
+ // gl methods should be no-ops
+ shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendFunc(gl.TEXTURE_2D, gl.TEXTURE_CUBE_MAP)");
+ // but the event should not have been fired.
+ shouldBeFalse("contextLostEventFired");
+}
+
+function testLosingAndRestoringContext()
+{
+ if (!setupTest())
+ finishTest();
+
+ debug("");
+ debug("Test losing and restoring a context.");
+
+ canvas.addEventListener("webglcontextlost", function(e) {
+ testLostContext(e);
+ // restore the context after this event has exited.
+ setTimeout(function() {
+ shouldGenerateGLError(gl, gl.NO_ERROR, "extension.restoreContext()");
+ // The context should still be lost. It will not get restored until the
+ // webglrestorecontext event is fired.
+ shouldBeTrue("gl.isContextLost()");
+ shouldBe("gl.getError()", "gl.NO_ERROR");
+ // gl methods should still be no-ops
+ shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendFunc(gl.TEXTURE_2D, gl.TEXTURE_CUBE_MAP)");
+ }, 0);
+ });
+ canvas.addEventListener("webglcontextrestored", function() {
+ testRestoredContext();
+ finishTest();
+ });
+ allowRestore = true;
+ contextLostEventFired = false;
+ contextRestoredEventFired = false;
+
+ testOriginalContext();
+ extension.loseContext();
+ // The context should be lost immediately.
+ shouldBeTrue("gl.isContextLost()");
+ shouldBe("gl.getError()", "gl.CONTEXT_LOST_WEBGL");
+ shouldBe("gl.getError()", "gl.NO_ERROR");
+ // gl methods should be no-ops
+ shouldGenerateGLError(gl, gl.NO_ERROR, "gl.blendFunc(gl.TEXTURE_2D, gl.TEXTURE_CUBE_MAP)");
+ // but the event should not have been fired.
+ shouldBeFalse("contextLostEventFired");
+}
+
+function testRendering()
+{
+ gl.clearColor(0, 0, 0, 255);
+ gl.colorMask(1, 1, 1, 0);
+ gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+
+ program = wtu.setupSimpleTextureProgram(gl);
+ bufferObjects = wtu.setupUnitQuad(gl);
+ texture = wtu.createColoredTexture(gl, canvas.width, canvas.height, texColor);
+
+ gl.uniform1i(gl.getUniformLocation(program, "tex"), 0);
+ wtu.drawQuad(gl, [0, 0, 0, 255]);
+
+ var compare = texColor.slice(0, 3);
+ wtu.checkCanvasRect(gl, 0, 0, canvas.width, canvas.height, compare, "shouldBe " + compare);
+
+ shouldBe("gl.getError()", "gl.NO_ERROR");
+}
+
+function testOriginalContext()
+{
+ debug("Test valid context");
+ shouldBeFalse("gl.isContextLost()");
+ shouldBe("gl.getError()", "gl.NO_ERROR");
+ testRendering();
+ debug("");
+}
+
+function testLostContext(e)
+{
+ debug("Test lost context");
+ shouldBeFalse("contextLostEventFired");
+ contextLostEventFired = true;
+ shouldBeTrue("gl.isContextLost()");
+ shouldBe("gl.getError()", "gl.NO_ERROR");
+ debug("");
+ if (allowRestore)
+ e.preventDefault();
+}
+
+function testShouldNotRestoreContext(e)
+{
+ testFailed("Should not restore the context unless preventDefault is called on the context lost event");
+ debug("");
+}
+
+function testResources(expected)
+{
+ var tests = [
+ "gl.bindTexture(gl.TEXTURE_2D, texture)",
+ "gl.useProgram(program)",
+ "gl.bindBuffer(gl.ARRAY_BUFFER, bufferObjects[0])",
+ ];
+
+ for (var i = 0; i < tests.length; ++i)
+ shouldGenerateGLError(gl, expected, tests[i]);
+}
+
+function testRestoredContext()
+{
+ debug("Test restored context");
+ shouldBeFalse("contextRestoredEventFired");
+ contextRestoredEventFired = true;
+ shouldBeFalse("gl.isContextLost()");
+ shouldBe("gl.getError()", "gl.NO_ERROR");
+
+ // Validate that using old resources fails.
+ testResources(gl.INVALID_OPERATION);
+
+ testRendering();
+
+ // Validate new resources created in testRendering().
+ testResources(gl.NO_ERROR);
+ debug("");
+}
+
+
+</script>
+</head>
+<body onload="init()">
+<div id="description"></div>
+<div id="console"></div>
+</body>
+</html>
Property changes on: third_party/webgl/sdk/tests/conformance/context/context-lost-restored.html
___________________________________________________________________
Added: svn:eol-style
+ LF
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