Libgdx 3D 纹理透明度

2022-01-12 00:00:00 transparency textures alphablending java libgdx

我在使用具有透明区域的纹理时遇到问题.基本上，它是呈现在立方体上的硬币纹理.我无法让角落看起来透明，它们只是显示为白色/灰色.

I'm having a problem with a texture which has transparent areas. Basically it is a texture of a coin rendered onto a cube. I can't get the corners to appear transparent, they just show up as white/gray.

我确保启用了 G20.GL_Blend，所以不可能.

I made sure to enable G20.GL_Blend, so that can't be it.

这是我在 render() 方法中使用的代码(我尝试了不同的组合):

This is the code I use in the render() method (I tried different combinations):

    Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
    Gdx.gl20.glEnable(GL20.GL_BLEND);
    Gdx.gl20.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
    Gdx.gl20.glEnable(GL20.GL_TEXTURE_2D);
    Gdx.gl20.glBlendEquation(GL20.GL_BLEND);
    
    modelBatch.begin(cam);
    texture.bind();
    modelBatch.render(instance, environment);
    modelBatch.end();
        
    Gdx.gl20.glDisable(GL20.GL_TEXTURE_2D);

推荐答案

为模型添加混合属性:

http://www.badlogicgames.com/forum/viewtopic.php?f=11&t=10016&p=45952#p45369

编辑.- 链接失效.是这样的:

Edit.- Link dead. It is like this:

modelInstance.materials.get(0).set(
    new BlendingAttribute(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA)
)

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