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how to get Render Texture to create a a png from multiple texture


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Hello i created a code that uses pixi filter to change color pallete of multiple textures that by operation merging textures into one i get a character, but getting data for every single texture by extract was painful for my engine if i had more than two characters on map, so i decided to modify my code to first render all textures (sprite) into one render texture and than extract data form this, it faster also still takes half second to complete with ~20 characters so maybe you can as additional tell me tricks to improve farther, but my question is not about that but when i retrieve data i get the glasses of character without alpha data, and orginal texture has alpha data, also when using one texture per one render texture than manually extract pixels and draw it onto texture i get glasses with opacity (or transparent).

Here my code:

var text = bit._baseTexture;
var texture = new PIXI.Texture(text);

var mySprite = new PIXI.Sprite(texture);
var shader = new ChangeColorPallete(usedColors, newColors, 0.00001);

mySprite.filters = [shader];
Graphics._renderer.render(container, renderTex);

and here the code in which i retrieve pixels

var pixels = Graphics._renderer.extract.canvas(renderTex);
this.bitmap._context.drawImage(pixels, 0, 0);

and ones for declaring render texture and containet

var renderTex = null;
var container = new PIXI.Container();

if (!renderTex)
	renderTex = PIXI.RenderTexture.create(bit.width, bit.height)


ps. If someone i'm using as a base rpg maker mv engine as a base.

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