cesiumDemo/Source/Shaders/PolylineShadowVolumeVS.js

//This file is automatically rebuilt by the Cesium build process.
export default "attribute vec3 position3DHigh;\n\
attribute vec3 position3DLow;\n\
#ifndef COLUMBUS_VIEW_2D\n\
attribute vec4 startHiAndForwardOffsetX;\n\
attribute vec4 startLoAndForwardOffsetY;\n\
attribute vec4 startNormalAndForwardOffsetZ;\n\
attribute vec4 endNormalAndTextureCoordinateNormalizationX;\n\
attribute vec4 rightNormalAndTextureCoordinateNormalizationY;\n\
#else\n\
attribute vec4 startHiLo2D;\n\
attribute vec4 offsetAndRight2D;\n\
attribute vec4 startEndNormals2D;\n\
attribute vec2 texcoordNormalization2D;\n\
#endif\n\
attribute float batchId;\n\
varying vec4 v_startPlaneNormalEcAndHalfWidth;\n\
varying vec4 v_endPlaneNormalEcAndBatchId;\n\
varying vec4 v_rightPlaneEC;\n\
varying vec4 v_endEcAndStartEcX;\n\
varying vec4 v_texcoordNormalizationAndStartEcYZ;\n\
#ifdef WIDTH_VARYING\n\
varying float v_width;\n\
#endif\n\
#ifdef ANGLE_VARYING\n\
varying float v_polylineAngle;\n\
#endif\n\
#ifdef PER_INSTANCE_COLOR\n\
varying vec4 v_color;\n\
#endif\n\
void main()\n\
{\n\
#ifdef COLUMBUS_VIEW_2D\n\
vec3 ecStart = (czm_modelViewRelativeToEye * czm_translateRelativeToEye(vec3(0.0, startHiLo2D.xy), vec3(0.0, startHiLo2D.zw))).xyz;\n\
vec3 forwardDirectionEC = czm_normal * vec3(0.0, offsetAndRight2D.xy);\n\
vec3 ecEnd = forwardDirectionEC + ecStart;\n\
forwardDirectionEC = normalize(forwardDirectionEC);\n\
v_rightPlaneEC.xyz = czm_normal * vec3(0.0, offsetAndRight2D.zw);\n\
v_rightPlaneEC.w = -dot(v_rightPlaneEC.xyz, ecStart);\n\
vec4 startPlaneEC;\n\
startPlaneEC.xyz =  czm_normal * vec3(0.0, startEndNormals2D.xy);\n\
startPlaneEC.w = -dot(startPlaneEC.xyz, ecStart);\n\
vec4 endPlaneEC;\n\
endPlaneEC.xyz =  czm_normal * vec3(0.0, startEndNormals2D.zw);\n\
endPlaneEC.w = -dot(endPlaneEC.xyz, ecEnd);\n\
v_texcoordNormalizationAndStartEcYZ.x = abs(texcoordNormalization2D.x);\n\
v_texcoordNormalizationAndStartEcYZ.y = texcoordNormalization2D.y;\n\
#else // COLUMBUS_VIEW_2D\n\
vec3 ecStart = (czm_modelViewRelativeToEye * czm_translateRelativeToEye(startHiAndForwardOffsetX.xyz, startLoAndForwardOffsetY.xyz)).xyz;\n\
vec3 offset = czm_normal * vec3(startHiAndForwardOffsetX.w, startLoAndForwardOffsetY.w, startNormalAndForwardOffsetZ.w);\n\
vec3 ecEnd = ecStart + offset;\n\
vec3 forwardDirectionEC = normalize(offset);\n\
vec4 startPlaneEC;\n\
startPlaneEC.xyz = czm_normal * startNormalAndForwardOffsetZ.xyz;\n\
startPlaneEC.w = -dot(startPlaneEC.xyz, ecStart);\n\
vec4 endPlaneEC;\n\
endPlaneEC.xyz = czm_normal * endNormalAndTextureCoordinateNormalizationX.xyz;\n\
endPlaneEC.w = -dot(endPlaneEC.xyz, ecEnd);\n\
v_rightPlaneEC.xyz = czm_normal * rightNormalAndTextureCoordinateNormalizationY.xyz;\n\
v_rightPlaneEC.w = -dot(v_rightPlaneEC.xyz, ecStart);\n\
v_texcoordNormalizationAndStartEcYZ.x = abs(endNormalAndTextureCoordinateNormalizationX.w);\n\
v_texcoordNormalizationAndStartEcYZ.y = rightNormalAndTextureCoordinateNormalizationY.w;\n\
#endif // COLUMBUS_VIEW_2D\n\
v_endEcAndStartEcX.xyz = ecEnd;\n\
v_endEcAndStartEcX.w = ecStart.x;\n\
v_texcoordNormalizationAndStartEcYZ.zw = ecStart.yz;\n\
#ifdef PER_INSTANCE_COLOR\n\
v_color = czm_batchTable_color(batchId);\n\
#endif // PER_INSTANCE_COLOR\n\
vec4 positionRelativeToEye = czm_computePosition();\n\
vec4 positionEC = czm_modelViewRelativeToEye * positionRelativeToEye;\n\
float absStartPlaneDistance = abs(czm_planeDistance(startPlaneEC, positionEC.xyz));\n\
float absEndPlaneDistance = abs(czm_planeDistance(endPlaneEC, positionEC.xyz));\n\
vec3 planeDirection = czm_branchFreeTernary(absStartPlaneDistance < absEndPlaneDistance, startPlaneEC.xyz, endPlaneEC.xyz);\n\
vec3 upOrDown = normalize(cross(v_rightPlaneEC.xyz, planeDirection));\n\
vec3 normalEC = normalize(cross(planeDirection, upOrDown));\n\
upOrDown = cross(forwardDirectionEC, normalEC);\n\
upOrDown = float(czm_sceneMode == czm_sceneMode3D) * upOrDown;\n\
upOrDown = float(v_texcoordNormalizationAndStartEcYZ.y > 1.0 || v_texcoordNormalizationAndStartEcYZ.y < 0.0) * upOrDown;\n\
upOrDown = min(GLOBE_MINIMUM_ALTITUDE, czm_geometricToleranceOverMeter * length(positionRelativeToEye.xyz)) * upOrDown;\n\
positionEC.xyz += upOrDown;\n\
v_texcoordNormalizationAndStartEcYZ.y = czm_branchFreeTernary(v_texcoordNormalizationAndStartEcYZ.y > 1.0, 0.0, abs(v_texcoordNormalizationAndStartEcYZ.y));\n\
float width = czm_batchTable_width(batchId);\n\
#ifdef WIDTH_VARYING\n\
v_width = width;\n\
#endif\n\
v_startPlaneNormalEcAndHalfWidth.xyz = startPlaneEC.xyz;\n\
v_startPlaneNormalEcAndHalfWidth.w = width * 0.5;\n\
v_endPlaneNormalEcAndBatchId.xyz = endPlaneEC.xyz;\n\
v_endPlaneNormalEcAndBatchId.w = batchId;\n\
width = width * max(0.0, czm_metersPerPixel(positionEC));\n\
width = width / dot(normalEC, v_rightPlaneEC.xyz);\n\
#ifdef COLUMBUS_VIEW_2D\n\
normalEC *= sign(texcoordNormalization2D.x);\n\
#else\n\
normalEC *= sign(endNormalAndTextureCoordinateNormalizationX.w);\n\
#endif\n\
positionEC.xyz += width * normalEC;\n\
gl_Position = czm_depthClampFarPlane(czm_projection * positionEC);\n\
#ifdef ANGLE_VARYING\n\
vec2 approxLineDirection = normalize(vec2(forwardDirectionEC.x, -forwardDirectionEC.y));\n\
approxLineDirection.y = czm_branchFreeTernary(approxLineDirection.x == 0.0 && approxLineDirection.y == 0.0, -1.0, approxLineDirection.y);\n\
v_polylineAngle = czm_fastApproximateAtan(approxLineDirection.x, approxLineDirection.y);\n\
#endif\n\
}\n\
";