I want to display Volume in iPhone (iPhone xR os 13.4 Xcode 11.3.1 VTK 8.2.0）
I use Examples /VTK-8.2.0/Examples/iOS/VolumeRender
but I got the error message：
Generic Warning: In /VTK-8.2.0/Rendering/OpenGL2/vtkOpenGLState.cxx, line 617
Error glEnable/Disable1 OpenGL errors detected
0 : (1286) Unknown error
with stack trace of
WARNING: The stack could not be examined because backtrace is not supported.
Generic Warning: In /VTK/build/CMakeExternals/Build/vtk-ios-device-arm64/Rendering/OpenGL2/vtkOpenGLError.h, line 207
Failed to allocate 3D texture.1 OpenGL errors detected
0 : (1282) Invalid operation
ERROR: In /VTK-8.2.0/Rendering/VolumeOpenGL2/vtkVolumeTexture.cxx, line 762
vtkVolumeTexture (0x10460e340): Texture 3D allocation failed!
ERROR: In /VTK-8.2.0/Rendering/OpenGL2/vtkShaderProgram.cxx, line 461
vtkShaderProgram (0x2816b0870): 1: #version 300 es
ERROR: In /VTK-8.2.0/Rendering/OpenGL2/vtkShaderProgram.cxx, line 462
vtkShaderProgram (0x2816b0870): ERROR: 0:416: ‘/’ does not operate on ‘vec2’ and 'ivec2’
ERROR: 0:417: Use of undeclared identifier 'jitterValue’
ERROR: In /VTK-8.2.0/Rendering/VolumeOpenGL2/vtkOpenGLGPUVolumeRayCastMapper.cxx, line 3029
vtkOpenGLGPUVolumeRayCastMapper (0x107d07200): Shader failed to compile
I don’t know how to solve it