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POCannot render SurfaceLayer during paint method
 

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    <p><strong>Edit</strong> This was a bug that has been fixed in <a href="https://github.com/threerings/playn/commit/137ce50dddd2716f84c38ec1568d7ae5a368434b" rel="nofollow">https://github.com/threerings/playn/commit/137ce50dddd2716f84c38ec1568d7ae5a368434b</a>. See Par Eklund's answer for details. </p> <p>Before I begin: I am a novice at game programming in general so it's very likely that I have a fundamental misunderstanding of the tools I am using. However I'll push on with my question...</p> <p>Whenever I try to draw something on my Surface Layer during the <code>paint</code> method I get a black screen. If I draw during the <code>init</code> method it shows up OK. </p> <p>I am trying to replicate the code under the <em>Surface Layer</em> banner <a href="https://developers.google.com/playn/devguide/rendering" rel="nofollow">here</a>. The code in question is this:</p> <pre><code>public void paint() { // Draw 100 random peas imperatively. surf.clear(0); for (int i = 0; i &lt; 100; ++i) { int x = (int)(random() * WIDTH); int y = (int)(random() * HEIGHT); surf.drawImage(pea, x, y); } } </code></pre> <p>I am using PlayN 1.4 so while that code doesn't directly match up to what I am writing I thought I at least had the equivalent (except I am drawing white rectangles):</p> <pre><code>public void paint(final float alpha) { surfaceLayer.surface().clear(); surfaceLayer.surface().setFillColor(Color.rgb(255, 255, 255)); for (int i = 0; i &lt; 100; ++i) { int x = (int) (Math.random() * width); int y = (int) (Math.random() * height); surfaceLayer.surface().fillRect(x, y, 5, 5); } } </code></pre> <p>Nothing is rendered to the screen. If I move that code into the <code>init</code> method it renders as expected.</p> <p>Now <strong>interestingly</strong> if I make PlayN 1.3.1 project and use the <em>exact same code</em> it renders fine during the paint method (given that I'm still using the exact same code I'm not sure what version the PlayN website is using in its example code...).</p> <p>What have I missed here? Has 1.4 changed something to do with the Surface Layer and I must use it differently now? Thanks.</p>
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