Another demo updated
peter | 28 January, 2010 | 16:25I’ve just finished updating the particle systems demo. There wasn’t anything wrong with the demo itself, but there was an array in the particle system class that wasn’t being initialized properly that suddenly started causing Minefield to crash. The strange thing is that until recently Minefield wasn’t complaining about it. But as of the nightly build on the 23rd it didn’t just complain, it outright crashed. By populating the array with 0s when it is initialized, I’ve got particles working again. The misleading problem was that this happened at the same time I was fixing an issue with colours for Chromium was preventing it from displaying. It started crashing one browser at the same time I fixed a problem for another. It turns out that was caused because colour values were being read out of a file and split into an array, but they were never explicitly made into floating point values. Minefield and Webkit understood them as such anyway, but Chromium didn’t like that. A temporary solution was to multiply the values by 1 before using them, but that isn’t a very good solution. Once I actually traced the problem to its source, a quick parseFloat took care of it. Slightly slower, but more correct.
Hi, as a more general solution to this problem You can
Sascha Hendel | 29 January, 2010 | 6:02Hi,
as a more general solution to this problem You can add in renderopengles20.js the following lines into function section this.setUniformf = function (shader, varName, value) {
if ( value instanceof Array)
{
value = new WebGLFloatArray( value);
}
Sascha