All,
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)
Rasterizer
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)
Framebuffer
RGBA Bits: [8, 8, 8, 8]
Depth / Stencil Bits: [24, 8]
Max Render Buffer Size: 4096
Max Viewport Dimensions: [4096, 4096]
Textures
Max Texture Size: 4096
Max Cube Map Texture Size: 4096
Max Combined Texture Image Units: 20
Max Anisotropy: 16