我尝试在libgdx中渲染带孔的半透明3D立方体？对于渲染背面，我将剔除面设置为无，深度测试设置为假。
public void init() {
batch = new ModelBatch();
environment = new Environment();
environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1f));
environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -0.2f, -0.8f, -1f));
modelInstance = new ModelInstance(assets.get("cube.g3dj", Model.class));
Material material = modelInstance.getMaterial("Main");
material.clear();
material.set(ColorAttribute.createDiffuse(new Color(0x0075f4ff)));
material.set(new BlendingAttribute(0.6f));
material.set(IntAttribute.createCullFace(GL20.GL_NONE));
material.set(new DepthTestAttribute(false));
}
public void render(float delta) {
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
batch.begin(camera);
batch.render(modelInstance, environment);
batch.end();
}
cube.g3dj：
{
"version": [ 0, 1],
"id": "",
"meshes": [
{
"attributes": ["POSITION", "NORMAL"],
"vertices": [
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],
"parts": [
{
"id": "Cube_part1",
"type": "TRIANGLES",
"indices": [
0, 1, 2, 0, 2, 3, 4, 5, 6, 5, 7, 6,
8, 9, 10, 9, 8, 11, 12, 13, 14, 13, 12, 15,
16, 17, 18, 17, 16, 19, 20, 21, 22, 21, 20, 23,
24, 25, 26, 26, 25, 27, 28, 29, 30, 30, 29, 31,
32, 33, 34, 33, 32, 35, 36, 37, 38, 37, 36, 39,
40, 41, 42, 42, 41, 43, 44, 45, 46, 45, 44, 47,
48, 49, 50, 49, 48, 51, 52, 53, 54, 52, 54, 55,
56, 57, 58, 57, 56, 59, 60, 61, 62, 62, 61, 63
]
}
]
}
],
"materials": [
{
"id": "Main",
"ambient": [ 0.000000, 0.000000, 0.000000],
"diffuse": [ 0.422876, 0.619359, 0.800000],
"emissive": [ 0.422876, 0.619359, 0.800000],
"opacity": 0.614078,
"specular": [ 1.000000, 1.000000, 1.000000],
"shininess": 9.607843
}
],
"nodes": [
{
"id": "Cube",
"rotation": [-0.707107, 0.000000, 0.000000, 0.707107],
"scale": [ 0.500000, 0.500000, 0.500000],
"parts": [
{
"meshpartid": "Cube_part1",
"materialid": "Main"
}
]
}
],
"animations": []
}
但我有两个问题：
