Problem with rendering of ground primitives


I’ve been trying to start working with GroundPrimitives, and this is what I see when I try to work with the example in Sandcastle.

Unless it is a bug, could it be a gpu issue? I am using Radeon HD 6450 with 512 memory, on windows 7. There are no errors in the console or WebGL reports



returns true

This is my chrome://gpu in case that helps

Graphics Feature Status

  • Canvas: Hardware accelerated
  • Flash: Hardware accelerated
  • Flash Stage3D: Hardware accelerated
  • Flash Stage3D Baseline profile: Hardware accelerated
  • Compositing: Hardware accelerated
  • Multiple Raster Threads: Enabled
  • Rasterization: Hardware accelerated
  • Video Decode: Hardware accelerated
  • Video Encode: Hardware accelerated
  • WebGL: Hardware accelerated

Driver Bug Workarounds

  • clear_uniforms_before_first_program_use
  • disable_d3d11
  • exit_on_context_lost
  • scalarize_vec_and_mat_constructor_args
  • texsubimage_faster_than_teximage

Problems Detected

  • Some drivers are unable to reset the D3D device in the GPU process sandbox
    Applied Workarounds: exit_on_context_lost
  • TexSubImage is faster for full uploads on ANGLE
    Applied Workarounds: texsubimage_faster_than_teximage
  • Clear uniforms before first program use on all platforms: 124764, 349137
    Applied Workarounds: clear_uniforms_before_first_program_use
  • Always rewrite vec/mat constructors to be consistent: 398694
    Applied Workarounds: scalarize_vec_and_mat_constructor_args
  • Disable Direct3D11 on systems with AMD switchable graphics: 451420
    Applied Workarounds: disable_d3d11