小编Eze*_*aga的帖子

我基本上想在LibGDX中使用混合模式,但不知道该怎么做.我在互联网上找到了这个图像.我想在LibGDX上做同样的事情.有人可以教我如何.

我一直在玩Scene2D.这是我的非工作片段.

private class MyGroup extends Group {

    Image red, blue;

    public MyGroup() {
        Texture texture = new Texture(Gdx.files.internal("images/red.png"));
        texture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
        red = new Image(texture);

        texture = new Texture(Gdx.files.internal("images/blue.png"));
        texture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
        blue = new Image(texture);

        red.setX(-25);
        blue.setX(25);
    }
    @Override
    public void draw(Batch batch, float parentAlpha) {
        batch.end();
        batch.begin();
        batch.enableBlending();

        red.draw(batch, parentAlpha);

        Gdx.gl.glEnable(Gdx.gl20.GL_BLEND);
        Gdx.gl.glBlendFuncSeparate(
                Gdx.gl20.GL_DST_COLOR, 
                Gdx.gl20.GL_SRC_COLOR,
                Gdx.gl20.GL_ONE,
                Gdx.gl20.GL_ONE);

        blue.draw(batch, parentAlpha);
    }
}

我正在寻找写入像素的最快方法javafx.scene.image.Image.写入BufferedImage后备阵列的速度要快得多.至少在测试图像上我只花了~20ms BufferedImage,WritableImage另一方面花了~100ms.我已经尝试SwingFXUtils但没有运气.

代码为BufferedImage(更快):

BufferedImage bi = createCompatibleImage( width, height );
WritableRaster raster = bi.getRaster();
DataBufferInt dataBuffer = (DataBufferInt) raster.getDataBuffer();

System.arraycopy( pixels, 0, dataBuffer.getData(), 0, pixels.length );

代码WritableImage(慢):

WritableImage wi = new WritableImage( width, height );
PixelWriter pw = wi.getPixelWriter();
WritablePixelFormat<IntBuffer> pf = WritablePixelFormat.getIntArgbInstance();

pw.setPixels( 0, 0, width, height, pf, pixels, 0, width );

也许有办法写入WritableImage后备阵列？