libfreenect2示例Protonect只显示原始提要？

Question

我认为libfreenect2中的Protonect示例应该显示的不仅仅是这个原始提要？

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我在OpenCL的i7 4790上运行LinuxMint17.2和pocl 0.11。该系统已安装了llvm-3.6。这是clinfo的输出。

Number of platforms                               1
  Platform Name                                   Portable Computing Language
  Platform Vendor                                 The pocl project
  Platform Version                                OpenCL 1.2 pocl 0.11
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_icd
  Platform Extensions function suffix             POCL

  Platform Name                                   Portable Computing Language
Number of devices                                 1
  Device Name                                     pthread-Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
  Device Vendor                                   pocl
  Device Vendor ID                                0x0
  Device Version                                  OpenCL 1.2 pocl
  Driver Version                                  0.11
  Device OpenCL C Version                         OpenCL C 1.2
  Device Type                                     CPU, Default
  Device Profile                                  FULL_PROFILE
  Max compute units                               8
  Max clock frequency                             4000MHz
  Device Partition                                (core)
    Max number of sub-devices                     2
    Supported partition types                     None
  Max work item dimensions                        3
  Max work item sizes                             18446744073709551615x18446744073709551615x18446744073709551615
  Max work group size                             4096
  Preferred work group size multiple              8
  Preferred / native vector sizes                 
    char                                                16 / 16      
    short                                                8 / 8       
    int                                                  4 / 4       
    long                                                 2 / 2       
    half                                                 8 / 8        (n/a)
    float                                                4 / 4       
    double                                               2 / 2        (cl_khr_fp64)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Address bits                                    64, Little-Endian
  Global memory size                              33643532288 (31.33GiB)
  Error Correction support                        No
  Max memory allocation                           8410883072 (7.833GiB)
  Unified memory for Host and Device              Yes
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       128 bits (16 bytes)
  Global Memory cache type                        None
  Image support                                   Yes
    Max number of samplers per kernel             16
pocl warning: encountered incomplete implementation in clGetDeviceInfo.c:135
    Max size for 1D images from buffer            0 pixels
pocl warning: encountered incomplete implementation in clGetDeviceInfo.c:137
    Max 1D or 2D image array size                 0 images
    Max 2D image size                             8192x8192 pixels
    Max 3D image size                             2048x2048x2048 pixels
    Max number of read image args                 128
    Max number of write image args                128
  Local memory type                               Global
  Local memory size                               8410883072 (7.833GiB)
  Max constant buffer size                        8410883072 (7.833GiB)
  Max number of constant args                     8
  Max size of kernel argument                     1024
  Queue properties                                
    Out-of-order execution                        No
    Profiling                                     Yes
  Prefer user sync for interop                    Yes
  Profiling timer resolution                      0ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            Yes
pocl warning: encountered incomplete implementation in clGetDeviceInfo.c:257
  printf() buffer size                            0
  Built-in kernels                                
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Device Extensions                               cl_khr_fp64 cl_khr_byte_addressable_store

NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  Portable Computing Language
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [POCL]
  clCreateContext(NULL, ...) [default]            Success [POCL]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  Success (1)
    Platform Name                                 Portable Computing Language
    Device Name                                   pthread-Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  Success (1)
    Platform Name                                 Portable Computing Language
    Device Name                                   pthread-Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.1.3
  ICD loader Profile                              OpenCL 1.2

对什么可能是错的有什么想法吗？这是我第一次在CPU上而不是GPU上使用OpenCL，也是我第一次用Kinect尝试任何东西，所以我不是很熟悉。谢谢你的帮助！

Answer 1

您的OpenCL并不重要，因为您没有使用OpenCL。在输出中，您可以看到OpenGLDepthPacketProcessor，这是protonect中的缺省值。我认为最近在Linux上出现了一些问题。尝试使用cl命令行参数启动protonect：

./protonect cl

这应该确保使用了OpenCL实现。

您也可以尝试cpu参数，而不是使用OpenGL或OpenCL。这将慢得多，但至少不需要担心正确的OpenGL/OpenCL驱动程序。