czm_pixelSizeInMeters
An automatic GLSL uniform representing the size of a pixel in meters at a distance of one meter from the camera. The pixel size is linearly proportional to the distance from the camera.
Example
// GLSL declaration uniform float czm_pixelSizeInMeters; // Example: the pixel size at a position in eye coordinates float pixelSize = czm_pixelSizeInMeters * positionEC.z;