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59 lines
1.3 KiB
HTML
59 lines
1.3 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 Framebuffer Test
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*
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* Clear the canvas to green, but create and bind a new framebuffer
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* before returning. This will fail if we blindly read from the bound
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* framebuffer, instead of binding to the screen and reading from that.
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*
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* How failure looks isn't well defined, since this is an empty framebuffer,
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* thus is incomplete, and should cause errors if it's read from.
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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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var fb = gl.createFramebuffer();
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gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
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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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rAF(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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