WebGL programs using textures are not visible on FF4 RC1 on Samsung Galaxy Tab
I am unable to view any WebGL sites which use textures on Firefox 4 RC on the Samsung Galaxy Tab.
An example is <http://learningwebgl.com/lessons/lesson05/index.html>. WebGL lessons till lesson 4 work on the tablet, but not this one or any other lesson which uses textures.
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Yeah, I've seen this problem too, I've even made a minimal test case: http://people.mozilla.org/~bjacob/webgltexture/
No clue though :-( it works on other phones.
I have tried the same example in Galaxy S and Nexus S with FF4 release, experiencing the same problem - the textured scene looks blank.
What phones have you tried that worked fine with textures? Has anybody tried XOOM with FF4 & WebGL?
UPDATE: also tried fennec build on Win7 - the same story (I had to set forceWebGL though, it is probably related to the old version of my graphic driver)
UPDATE 2: the animation is actually running, but the texture is rendered black, if you change the clear color to white, you'll see it
由 Juriy 於 修改
Webgl is not supported on Mobile devices. There is an open bug that we are looking to get fixed after the release of Firefox Mobile 5.
I have found the workaround for this bug: when you use the
gl.texImage2D(...);
with the image as the last parameter it throws some sort of exception that looks quite useless for the JavaScript developer.
So here is the workaround. You can create another Canvas element on the page and render the texture on it's 2d context. Then pass the canvas element (not the context) as the last parameter to texImage2D - it will work just fine.
I'm making a small showcase on my blog I'll post the link here, but it should be pretty obvious how to deal with the problem. The solution was tested on Galaxy S and Nexus S.