зеркало из https://github.com/mozilla/gecko-dev.git
58 строки
1.2 KiB
HTML
58 строки
1.2 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<head>
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<meta charset="UTF-8">
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<script type="text/javascript" src="webgl-utils.js"></script>
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<script type="text/javascript">
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/* Hanging Scissor Test
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*
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* Clear the canvas to green, but create and enable and set scissor values
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* before returning. This can fail if we blindly blit or read from the screen
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* without disabling scissor-test.
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*
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* Failure should look like only the top-left quadrant is rendered.
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*/
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"use strict";
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function renderGL(gl) {
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gl.clearColor(0.0, 1.0, 0.0, 1.0);
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gl.clear(gl.COLOR_BUFFER_BIT);
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gl.enable(gl.SCISSOR_TEST);
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gl.scissor(0, 128, 128, 128);
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gl.finish();
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}
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function renderFailure(canvas) {
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// This will also trigger RAF for us.
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var context = canvas.getContext("2d");
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context.fillText('WebGL failed.', 64, 64);
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}
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function runTest() {
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var canvas = document.getElementById("canvas");
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var gl = initGL(canvas);
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if (gl)
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renderGL(gl);
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else
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renderFailure(canvas);
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waitForComposite(testComplete);
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}
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function testComplete() {
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document.documentElement.removeAttribute("class");
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}
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</script>
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</head>
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<body onload="rAF(runTest);">
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<canvas id="canvas" width="256" height="256"></canvas>
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</body>
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</html>
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