Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | //This file is automatically rebuilt by the Cesium build process.
export default "// Thanks for the contribution Jonas\n\
// http://29a.ch/2012/7/19/webgl-terrain-rendering-water-fog\n\
\n\
uniform sampler2D specularMap;\n\
uniform sampler2D normalMap;\n\
uniform vec4 baseWaterColor;\n\
uniform vec4 blendColor;\n\
uniform float frequency;\n\
uniform float animationSpeed;\n\
uniform float amplitude;\n\
uniform float specularIntensity;\n\
uniform float fadeFactor;\n\
\n\
czm_material czm_getMaterial(czm_materialInput materialInput)\n\
{\n\
czm_material material = czm_getDefaultMaterial(materialInput);\n\
\n\
float time = czm_frameNumber * animationSpeed;\n\
\n\
// fade is a function of the distance from the fragment and the frequency of the waves\n\
float fade = max(1.0, (length(materialInput.positionToEyeEC) / 10000000000.0) * frequency * fadeFactor);\n\
\n\
float specularMapValue = texture(specularMap, materialInput.st).r;\n\
\n\
// note: not using directional motion at this time, just set the angle to 0.0;\n\
vec4 noise = czm_getWaterNoise(normalMap, materialInput.st * frequency, time, 0.0);\n\
vec3 normalTangentSpace = noise.xyz * vec3(1.0, 1.0, (1.0 / amplitude));\n\
\n\
// fade out the normal perturbation as we move further from the water surface\n\
normalTangentSpace.xy /= fade;\n\
\n\
// attempt to fade out the normal perturbation as we approach non water areas (low specular map value)\n\
normalTangentSpace = mix(vec3(0.0, 0.0, 50.0), normalTangentSpace, specularMapValue);\n\
\n\
normalTangentSpace = normalize(normalTangentSpace);\n\
\n\
// get ratios for alignment of the new normal vector with a vector perpendicular to the tangent plane\n\
float tsPerturbationRatio = clamp(dot(normalTangentSpace, vec3(0.0, 0.0, 1.0)), 0.0, 1.0);\n\
\n\
// fade out water effect as specular map value decreases\n\
material.alpha = mix(blendColor.a, baseWaterColor.a, specularMapValue) * specularMapValue;\n\
\n\
// base color is a blend of the water and non-water color based on the value from the specular map\n\
// may need a uniform blend factor to better control this\n\
material.diffuse = mix(blendColor.rgb, baseWaterColor.rgb, specularMapValue);\n\
\n\
// diffuse highlights are based on how perturbed the normal is\n\
material.diffuse += (0.1 * tsPerturbationRatio);\n\
\n\
material.diffuse = material.diffuse;\n\
\n\
material.normal = normalize(materialInput.tangentToEyeMatrix * normalTangentSpace);\n\
\n\
material.specular = specularIntensity;\n\
material.shininess = 10.0;\n\
\n\
return material;\n\
}\n\
";
|