Paths Shortened In Sandcastle In Cesium Master


I'm not sure if this is a known issue or not, but after the merge of the polylineMaterials branch to master, I've noticed that paths in CZML are now shortened on each end, but "backfill" as the billboard travels over the missing part of the path. I've verified that this occurs in the Sandcastle "Client CZML" example, in both Firefox and Chrome.

My GPU: Intel Graphics Media Accelerator X3100

WebGL Info (in Chrome):

Platform: Win32
Browser User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31
Context Name: experimental-webgl
GL Version: WebGL 1.0 (OpenGL ES 2.0 Chromium)
Shading Language Version: WebGL GLSL ES 1.0 (OpenGL ES GLSL ES 1.0 Chromium)
Vendor: WebKit
Renderer: WebKit WebGL
Antialiasing: Not available
ANGLE: true

Vertex Shader
Max Vertex Attributes: 16
Max Vertex Uniform Vectors: 254
Max Vertex Texture Image Units: 4
Max Varying Vectors: 10
Best float precision: [-2127, 2127] (23)

Aliased Line Width Range: [1, 1]
Aliased Point Size Range: [1, 256]
Fragment Shader
Max Fragment Uniform Vectors: 221
Max Texture Image Units: 16
Best float precision: [-2127, 2127] (23)

RGBA Bits: [8, 8, 8, 8]
Depth / Stencil Bits: [24, 8]
Max Render Buffer Size: 4096
Max Viewport Dimensions: [4096, 4096]

Max Texture Size: 4096
Max Cube Map Texture Size: 4096
Max Combined Texture Image Units: 20
Max Anisotropy: 16

Hi Wayne, thanks for the report. Do you know what video card you’re using and if so, how old the drivers are? The first thing I would recommend is making sure they are up to date.

Dan B., any ideas on this? I don’t think I see this on my system.


It's an Intel Integrated Graphics GPU, my machine is a Dell Vostro 1540. Drivers are up-to-date. I've also tested on a new Macbook Pro (also in Chrome) and get the same issue.

Thanks Wayne,

I submitted an issue:

While I don’t see what you’re seeing, there is something odd going on there. Hopefully it’s an easy fix for Dan.