Question

我有托盘可以在模型上应用漫反射，金属度，法线，粗糙度和Alpha贴图，但是所有贴图都可以使用，但是只有Alpha贴图不起作用。如何在Scenekit中制作透明玻璃？我在快速的iOS中将托盘放在下面的代码中。谁能告诉我具体的原因吗？。

if let finishMap = finish.finishMap {
      if let diffuseTexturePath = finishMap.diffuseMapUrl {
            disPatchGroup.enter()
            self.dataProvider.fetchTextureFile(forpath: diffuseTexturePath, successBlock: { (success, imageObject) in
                material.diffuse.contents = imageObject
                disPatchGroup.leave()
            }, failureBlock: { (error) in
                disPatchGroup.leave()
            })
        }

       if let metalTexturePath = finishMap.metalnessMapUrl {
            disPatchGroup.enter()
            self.dataProvider.fetchTextureFile(forpath: metalTexturePath, successBlock: { (success, imageObject) in
                material.metalness.contents = imageObject
                disPatchGroup.leave()
            }, failureBlock: { (error) in
                disPatchGroup.leave()
            })
        }

        if let roughnessTexturePath = finishMap.roughnessMapUrl {
            disPatchGroup.enter()
            self.dataProvider.fetchTextureFile(forpath: roughnessTexturePath, successBlock: { (success, imageObject) in
               material.roughness.contents = imageObject
                disPatchGroup.leave()
            }, failureBlock: { (error) in
                disPatchGroup.leave()
            })
        }

        if let normalTexturePath = finishMap.normalMapUrl {
            disPatchGroup.enter()
            self.dataProvider.fetchTextureFile(forpath: normalTexturePath, successBlock: { (success, imageObject) in
                material.normal.contents = imageObject
                disPatchGroup.leave()
            }, failureBlock: { (error) in
                disPatchGroup.leave()
            })
        }
        if let transparentTexturePath = finishMap.transparentMapUrl {
            disPatchGroup.enter()
            self.dataProvider.fetchTextureFile(forpath: transparentTexturePath, successBlock: { (success, imageObject) in

               material.transparent.contents = imageObject

                disPatchGroup.leave()
            }, failureBlock: { (error) in
                disPatchGroup.leave()
            })
        }

        }

Answer 1

将您的透明度贴图设置为rbgZero。有几种透明度模式，我认为默认值为alpha（不确定），如果您要将灰度图像用作地图，则需要使用rgbZero

material.transparencyMode   = .rgbZero

Alpha Map在SceneKit Swift iOS中不起作用

1 个答案: