var b = new ArrayBuffer(32*32*4);
var v1 = new Uint8Array(b);
for ( var i=0; i<32*32*4; i++ )
v1[i] = i%255;
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 32, 32, 0, gl.RGBA, gl.UNSIGNED_BYTE, v1);
but nothings showing up when I draw the texture its just black, no errors
I did this (based on your code - but Vulcan-mind-melded with some of mine):
var b = new ArrayBuffer(32*32*4);
var v1 = new Uint8Array(b);
for ( var i=0; i<32*32*4; i++ )
v1[i] = i%255;
var texture = gl.createTexture () ;
gl.bindTexture ( gl.TEXTURE_2D, texture ) ;
gl.texParameteri ( gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER,
gl.LINEAR_MIPMAP_LINEAR ) ;
gl.texParameteri ( gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR ) ;
gl.texParameteri ( gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT ) ;
gl.texParameteri ( gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT ) ;
gl.texImage2D (gl.TEXTURE_2D, 0, gl.RGBA, 32, 32, 0, gl.RGBA,
gl.UNSIGNED_BYTE, v1);
gl.generateMipmap ( gl.TEXTURE_2D ) ;
…and it worked OK inside my application. I’d start with that. If it doesn’t work - then there is something wrong elsewhere in your application. If it does work and then pull out lines one at a time until it breaks - then you’ll know what critical part you were missing!
cheers again steve, seems like we’re the only ppl on this forum
Im pretty sure thats pretty much what Ive got already, Ill check fully later though.
Well at least I know thats the correct way to set up the ArrayBuffer
One of those imfamous copy/paste bugs. Still its not gonna stop me from copying + pasting code, cause I rarely make them.
This would of been easy to find if there was a decent debugger for javascript that lets u step easily through code. Sure theres inbuilt debuggers in the browsers (chrome is a bit better than firebug IMHO) but compared to a C++ IDE theyre a pain, I find its actually easier to chuck a few log( “blah” ); through the code to debug.
RANT - though if javascript had strong typed variables etc I would make 10x fewer mistakes, coding in javascript’s driving me nuts.
Yeah…I agree. I hate JavaScript with a passion! It’s horrible to not spot something as stupid as a typo in a variable name until the line of code is actually executed! Don’t we have computers that can check that stuff for us?!