能否使用纹理视图仅为MTLTexture生成mipmap的子集?

我试图使用纹理视图为纹理仅生成mipmap的子集,但所有尝试都会导致以下错误:

由于执行期间出错,命令缓冲区的执行被中止。忽略(导致先前/过多GPU错误)(IOAF代码4)

伪代码:

// This is a texture that is 1024 x 1024 with 11 mipmap levels.
id<MTLTexture> destinationTexture = ...

// Extract all mipmap levels from 256 and smaller
NSRange levelsRange = NSMakeRange(2, 9);

// Create a new texture view for that includes only those levels from the destination texture.
id<MTLTexture> destinationView = [destinationTexture newTextureViewWithPixelFormat:destinationTexture.pixelFormat
                                                                       textureType:destinationTexture.textureType
                                                                            levels:levelsRange
                                                                            slices:NSMakeRange(0, 1)];

// Copy a region from a source texture into the destination view, 
// starting at level 0 of the view which, I think, should represent
// level 2 of its parent texture.
[blitEncoder copyFromTexture:sourceTexture
                 sourceSlice:0
                 sourceLevel:0
                sourceOrigin:sourceOrigin
                  sourceSize:sourceSize
                   toTexture:destinationView
            destinationSlice:0
            destinationLevel:0
           destinationOrigin:destinationOrigin];

// Generate mipmaps on the destination view. This causes the crash. 
[blitEncoder generateMipmapsForTexture:destinationView];

目前,blit正确执行,纹理更新,但如果我尝试生成mipmap,它会崩溃。如果我不生成mipmap,那么我需要使用 lod() ,而我希望使用 bias() 改为使用功能来限制范围。