32 lines
831 B
JavaScript
32 lines
831 B
JavaScript
|
//This file is automatically rebuilt by the Cesium build process.
|
||
|
|
define(function() {
|
||
|
|
'use strict';
|
||
|
|
return "// emulated noperspective\n\
|
||
|
|
#ifndef LOG_DEPTH\n\
|
||
|
|
varying float v_WindowZ;\n\
|
||
|
|
#endif\n\
|
||
|
|
\n\
|
||
|
|
/**\n\
|
||
|
|
* Clamps a vertex to the far plane.\n\
|
||
|
|
*\n\
|
||
|
|
* @name czm_depthClampFarPlane\n\
|
||
|
|
* @glslFunction\n\
|
||
|
|
*\n\
|
||
|
|
* @param {vec4} coords The vertex in clip coordinates.\n\
|
||
|
|
* @returns {vec4} The vertex clipped to the far plane.\n\
|
||
|
|
*\n\
|
||
|
|
* @example\n\
|
||
|
|
* gl_Position = czm_depthClampFarPlane(czm_modelViewProjection * vec4(position, 1.0));\n\
|
||
|
|
*\n\
|
||
|
|
* @see czm_writeDepthClampedToFarPlane\n\
|
||
|
|
*/\n\
|
||
|
|
vec4 czm_depthClampFarPlane(vec4 coords)\n\
|
||
|
|
{\n\
|
||
|
|
#ifndef LOG_DEPTH\n\
|
||
|
|
v_WindowZ = (0.5 * (coords.z / coords.w) + 0.5) * coords.w;\n\
|
||
|
|
coords.z = min(coords.z, coords.w);\n\
|
||
|
|
#endif\n\
|
||
|
|
return coords;\n\
|
||
|
|
}\n\
|
||
|
|
";
|
||
|
|
});
|