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202 lines
8.4 KiB
JavaScript
202 lines
8.4 KiB
JavaScript
//This file is automatically rebuilt by the Cesium build process.
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export default "#ifdef QUANTIZATION_BITS12\n\
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attribute vec4 compressed0;\n\
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attribute float compressed1;\n\
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#else\n\
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attribute vec4 position3DAndHeight;\n\
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attribute vec4 textureCoordAndEncodedNormals;\n\
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#endif\n\
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\n\
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uniform vec3 u_center3D;\n\
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uniform mat4 u_modifiedModelView;\n\
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uniform mat4 u_modifiedModelViewProjection;\n\
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uniform vec4 u_tileRectangle;\n\
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\n\
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// Uniforms for 2D Mercator projection\n\
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uniform vec2 u_southAndNorthLatitude;\n\
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uniform vec2 u_southMercatorYAndOneOverHeight;\n\
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\n\
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varying vec3 v_positionMC;\n\
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varying vec3 v_positionEC;\n\
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\n\
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varying vec3 v_textureCoordinates;\n\
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varying vec3 v_normalMC;\n\
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varying vec3 v_normalEC;\n\
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\n\
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#ifdef APPLY_MATERIAL\n\
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varying float v_slope;\n\
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varying float v_aspect;\n\
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varying float v_height;\n\
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#endif\n\
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\n\
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#if defined(FOG) || defined(GROUND_ATMOSPHERE) || defined(UNDERGROUND_COLOR) || defined(TRANSLUCENT)\n\
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varying float v_distance;\n\
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#endif\n\
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\n\
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#if defined(FOG) || defined(GROUND_ATMOSPHERE)\n\
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varying vec3 v_fogMieColor;\n\
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varying vec3 v_fogRayleighColor;\n\
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#endif\n\
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\n\
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// These functions are generated at runtime.\n\
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vec4 getPosition(vec3 position, float height, vec2 textureCoordinates);\n\
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float get2DYPositionFraction(vec2 textureCoordinates);\n\
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\n\
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vec4 getPosition3DMode(vec3 position, float height, vec2 textureCoordinates)\n\
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{\n\
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return u_modifiedModelViewProjection * vec4(position, 1.0);\n\
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}\n\
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\n\
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float get2DMercatorYPositionFraction(vec2 textureCoordinates)\n\
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{\n\
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// The width of a tile at level 11, in radians and assuming a single root tile, is\n\
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// 2.0 * czm_pi / pow(2.0, 11.0)\n\
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// We want to just linearly interpolate the 2D position from the texture coordinates\n\
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// when we're at this level or higher. The constant below is the expression\n\
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// above evaluated and then rounded up at the 4th significant digit.\n\
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const float maxTileWidth = 0.003068;\n\
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float positionFraction = textureCoordinates.y;\n\
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float southLatitude = u_southAndNorthLatitude.x;\n\
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float northLatitude = u_southAndNorthLatitude.y;\n\
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if (northLatitude - southLatitude > maxTileWidth)\n\
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{\n\
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float southMercatorY = u_southMercatorYAndOneOverHeight.x;\n\
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float oneOverMercatorHeight = u_southMercatorYAndOneOverHeight.y;\n\
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\n\
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float currentLatitude = mix(southLatitude, northLatitude, textureCoordinates.y);\n\
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currentLatitude = clamp(currentLatitude, -czm_webMercatorMaxLatitude, czm_webMercatorMaxLatitude);\n\
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positionFraction = czm_latitudeToWebMercatorFraction(currentLatitude, southMercatorY, oneOverMercatorHeight);\n\
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}\n\
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return positionFraction;\n\
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}\n\
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\n\
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float get2DGeographicYPositionFraction(vec2 textureCoordinates)\n\
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{\n\
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return textureCoordinates.y;\n\
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}\n\
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\n\
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vec4 getPositionPlanarEarth(vec3 position, float height, vec2 textureCoordinates)\n\
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{\n\
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float yPositionFraction = get2DYPositionFraction(textureCoordinates);\n\
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vec4 rtcPosition2D = vec4(height, mix(u_tileRectangle.st, u_tileRectangle.pq, vec2(textureCoordinates.x, yPositionFraction)), 1.0);\n\
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return u_modifiedModelViewProjection * rtcPosition2D;\n\
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}\n\
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\n\
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vec4 getPosition2DMode(vec3 position, float height, vec2 textureCoordinates)\n\
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{\n\
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return getPositionPlanarEarth(position, 0.0, textureCoordinates);\n\
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}\n\
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\n\
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vec4 getPositionColumbusViewMode(vec3 position, float height, vec2 textureCoordinates)\n\
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{\n\
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return getPositionPlanarEarth(position, height, textureCoordinates);\n\
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}\n\
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\n\
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vec4 getPositionMorphingMode(vec3 position, float height, vec2 textureCoordinates)\n\
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{\n\
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// We do not do RTC while morphing, so there is potential for jitter.\n\
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// This is unlikely to be noticeable, though.\n\
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vec3 position3DWC = position + u_center3D;\n\
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float yPositionFraction = get2DYPositionFraction(textureCoordinates);\n\
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vec4 position2DWC = vec4(height, mix(u_tileRectangle.st, u_tileRectangle.pq, vec2(textureCoordinates.x, yPositionFraction)), 1.0);\n\
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vec4 morphPosition = czm_columbusViewMorph(position2DWC, vec4(position3DWC, 1.0), czm_morphTime);\n\
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return czm_modelViewProjection * morphPosition;\n\
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}\n\
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\n\
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#ifdef QUANTIZATION_BITS12\n\
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uniform vec2 u_minMaxHeight;\n\
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uniform mat4 u_scaleAndBias;\n\
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#endif\n\
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\n\
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void main()\n\
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{\n\
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#ifdef QUANTIZATION_BITS12\n\
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vec2 xy = czm_decompressTextureCoordinates(compressed0.x);\n\
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vec2 zh = czm_decompressTextureCoordinates(compressed0.y);\n\
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vec3 position = vec3(xy, zh.x);\n\
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float height = zh.y;\n\
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vec2 textureCoordinates = czm_decompressTextureCoordinates(compressed0.z);\n\
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\n\
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height = height * (u_minMaxHeight.y - u_minMaxHeight.x) + u_minMaxHeight.x;\n\
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position = (u_scaleAndBias * vec4(position, 1.0)).xyz;\n\
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\n\
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#if (defined(ENABLE_VERTEX_LIGHTING) || defined(GENERATE_POSITION_AND_NORMAL)) && defined(INCLUDE_WEB_MERCATOR_Y)\n\
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float webMercatorT = czm_decompressTextureCoordinates(compressed0.w).x;\n\
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float encodedNormal = compressed1;\n\
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#elif defined(INCLUDE_WEB_MERCATOR_Y)\n\
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float webMercatorT = czm_decompressTextureCoordinates(compressed0.w).x;\n\
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float encodedNormal = 0.0;\n\
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#elif defined(ENABLE_VERTEX_LIGHTING) || defined(GENERATE_POSITION_AND_NORMAL)\n\
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float webMercatorT = textureCoordinates.y;\n\
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float encodedNormal = compressed0.w;\n\
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#else\n\
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float webMercatorT = textureCoordinates.y;\n\
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float encodedNormal = 0.0;\n\
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#endif\n\
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\n\
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#else\n\
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// A single float per element\n\
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vec3 position = position3DAndHeight.xyz;\n\
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float height = position3DAndHeight.w;\n\
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vec2 textureCoordinates = textureCoordAndEncodedNormals.xy;\n\
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\n\
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#if (defined(ENABLE_VERTEX_LIGHTING) || defined(GENERATE_POSITION_AND_NORMAL) || defined(APPLY_MATERIAL)) && defined(INCLUDE_WEB_MERCATOR_Y)\n\
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float webMercatorT = textureCoordAndEncodedNormals.z;\n\
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float encodedNormal = textureCoordAndEncodedNormals.w;\n\
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#elif defined(ENABLE_VERTEX_LIGHTING) || defined(GENERATE_POSITION_AND_NORMAL) || defined(APPLY_MATERIAL)\n\
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float webMercatorT = textureCoordinates.y;\n\
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float encodedNormal = textureCoordAndEncodedNormals.z;\n\
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#elif defined(INCLUDE_WEB_MERCATOR_Y)\n\
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float webMercatorT = textureCoordAndEncodedNormals.z;\n\
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float encodedNormal = 0.0;\n\
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#else\n\
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float webMercatorT = textureCoordinates.y;\n\
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float encodedNormal = 0.0;\n\
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#endif\n\
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\n\
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#endif\n\
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\n\
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vec3 position3DWC = position + u_center3D;\n\
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gl_Position = getPosition(position, height, textureCoordinates);\n\
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\n\
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v_textureCoordinates = vec3(textureCoordinates, webMercatorT);\n\
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\n\
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#if defined(ENABLE_VERTEX_LIGHTING) || defined(GENERATE_POSITION_AND_NORMAL) || defined(APPLY_MATERIAL)\n\
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v_positionEC = (u_modifiedModelView * vec4(position, 1.0)).xyz;\n\
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v_positionMC = position3DWC; // position in model coordinates\n\
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vec3 normalMC = czm_octDecode(encodedNormal);\n\
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v_normalMC = normalMC;\n\
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v_normalEC = czm_normal3D * v_normalMC;\n\
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#elif defined(SHOW_REFLECTIVE_OCEAN) || defined(ENABLE_DAYNIGHT_SHADING) || defined(GENERATE_POSITION) || defined(HDR)\n\
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v_positionEC = (u_modifiedModelView * vec4(position, 1.0)).xyz;\n\
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v_positionMC = position3DWC; // position in model coordinates\n\
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#endif\n\
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\n\
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#if defined(FOG) || defined(GROUND_ATMOSPHERE)\n\
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AtmosphereColor atmosFogColor = computeGroundAtmosphereFromSpace(position3DWC, false, vec3(0.0));\n\
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v_fogMieColor = atmosFogColor.mie;\n\
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v_fogRayleighColor = atmosFogColor.rayleigh;\n\
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#endif\n\
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\n\
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#if defined(FOG) || defined(GROUND_ATMOSPHERE) || defined(UNDERGROUND_COLOR) || defined(TRANSLUCENT)\n\
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v_distance = length((czm_modelView3D * vec4(position3DWC, 1.0)).xyz);\n\
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#endif\n\
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\n\
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#ifdef APPLY_MATERIAL\n\
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float northPoleZ = czm_ellipsoidRadii.z;\n\
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vec3 northPolePositionMC = vec3(0.0, 0.0, northPoleZ);\n\
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vec3 ellipsoidNormal = normalize(v_positionMC); // For a sphere this is correct, but not generally for an ellipsoid.\n\
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vec3 vectorEastMC = normalize(cross(northPolePositionMC - v_positionMC, ellipsoidNormal));\n\
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float dotProd = abs(dot(ellipsoidNormal, v_normalMC));\n\
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v_slope = acos(dotProd);\n\
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vec3 normalRejected = ellipsoidNormal * dotProd;\n\
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vec3 normalProjected = v_normalMC - normalRejected;\n\
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vec3 aspectVector = normalize(normalProjected);\n\
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v_aspect = acos(dot(aspectVector, vectorEastMC));\n\
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float determ = dot(cross(vectorEastMC, aspectVector), ellipsoidNormal);\n\
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v_aspect = czm_branchFreeTernary(determ < 0.0, 2.0 * czm_pi - v_aspect, v_aspect);\n\
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v_height = height;\n\
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#endif\n\
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}\n\
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";
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