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| /**
| * Determines if the fragment is back facing
| *
| * @name czm_backFacing
| * @glslFunction
| *
| * @returns {bool} <code>true</code> if the fragment is back facing; otherwise, <code>false</code>.
| */
| bool czm_backFacing()
| {
| // !gl_FrontFacing doesn't work as expected on Mac/Intel so use the more verbose form instead. See https://github.com/CesiumGS/cesium/pull/8494.
| return gl_FrontFacing == false;
| }
|
|
