{"id":3512,"date":"2014-12-22T22:10:22","date_gmt":"2014-12-22T19:10:22","guid":{"rendered":"http:\/\/unitycoder.com\/blog\/?p=3512"},"modified":"2015-08-21T09:27:50","modified_gmt":"2015-08-21T06:27:50","slug":"custom-terrain-shader-sharp-blending","status":"publish","type":"post","link":"https:\/\/unitycoder.com\/blog\/2014\/12\/22\/custom-terrain-shader-sharp-blending\/","title":{"rendered":"Custom Terrain Shader: Sharp Blending"},"content":{"rendered":"

Modified terrain shader for sharp blending.<\/p>\n

Tutorial:<\/strong>
\n– Download terrain shader sources for your unity version: http:\/\/unity3d.com\/unity\/download\/archive<\/a>
\n– Copy “DefaultResourcesExtra\\Nature\\Terrain\\TerrBumpFirstPass.shader” into your project
\n– Rename the “TerrBumpFirstPass.shader” into “”TerrBumpFirstPassCustom.shader”
\n– Edit “TerrBumpFirstPassCustom.shader”
\n– Find line:<\/p>\n

Shader "Nature\/Terrain\/Custom Bumped Specular" {<\/pre>\n
– Replace with: *So we get this shader under custom list<\/em><\/p>\n
Shader "Custom\/Nature\/Terrain\/Custom Bumped Specular" {<\/pre>\n
– Find line:<\/p>\n
fixed4 col;<\/pre>\n
– Add these lines after it: *I’m sure there would be a better way to clamp those to use max channel only, but works for now \ud83d\ude42<\/em><\/p>\n
\r\n\tif (splat_control.r>=splat_control.g && splat_control.r>=splat_control.b && splat_control.r>=splat_control.a)\r\n    {\r\n        splat_control.r=1;\r\n        splat_control.g=0;\r\n        splat_control.b=0;\r\n        splat_control.a=0;\r\n    }\r\n \r\n    if (splat_control.g>=splat_control.r && splat_control.g>=splat_control.b && splat_control.g>=splat_control.a)\r\n    {\r\n        splat_control.r=0;\r\n        splat_control.g=1;\r\n        splat_control.b=0;\r\n        splat_control.a=0;\r\n    }\r\n \r\n    if (splat_control.b>=splat_control.g && splat_control.b>=splat_control.r && splat_control.b>=splat_control.a)\r\n    {\r\n        splat_control.r=0;\r\n        splat_control.g=0;\r\n        splat_control.b=1;\r\n        splat_control.a=0;\r\n    }\r\n \r\n    if (splat_control.a>=splat_control.g && splat_control.a>=splat_control.b && splat_control.a>=splat_control.r)\r\n    {\r\n        splat_control.g=0;\r\n        splat_control.b=0;\r\n        splat_control.r=0;\r\n        splat_control.a=1;\r\n    }\r\n<\/pre>\n
\r\n\r\n<\/pre>\n
– Now create new material (Right click over project window, Create \/ Material<\/p>\n
– Rename the new material as “CustomTerrainMaterial”
\n– Assign “Custom\/Nature\/Terrain\/Custom Bumped Specular” to that material (from the material shader dropdown)
\n– Now assign material to the terrain: to Terrain object, Settings tab, Material slot<\/p>\n
—————————————-<\/p>\n
*Update for Unity5 (5.1.2)<\/strong><\/p>\n
– Download latest builtin shader (tested with 5.1.2) : http:\/\/unity3d.com\/unity\/download\/archive
\n– Copy this file to your project: “\\DefaultResourcesExtra\\TerrainShaders\\Splats\\Standard-FirstPass.shader”
\n– Edit the copied “Standard-FirstPass.shader” and rename it to “Nature\/Terrain\/StandardSharp”
\n– Copy file “\\512\\CGIncludes\\TerrainSplatmapCommon.cginc” to your project
\n– Modify file “TerrainSplatmapCommon.cginc”, find line “splat_control = tex2D(_Control, IN.tc_Control);”
\n– After that line, insert same custom code as above for unity4
\n– Create new material, assign shader Nature\/Terrain\/StandardSharp
\n– Assign this material to terrain (from terrain settings, material > custom, assign your material here)<\/p>\n
—<\/p>\n
Original terrain shader:<\/strong> (default blend)
\n\"terrain_blending_custom_unity_1\"
\nCustom terrain shader:<\/strong> (sharp blending)
\n\"terrain_blending_sharp_custom_unity_2\"<\/p>\n","protected":false},"excerpt":{"rendered":"
Modified terrain shader for sharp blending. Tutorial: – Download terrain shader sources for your unity version: http:\/\/unity3d.com\/unity\/download\/archive – Copy “DefaultResourcesExtra\\Nature\\Terrain\\TerrBumpFirstPass.shader” into your project – Rename the “TerrBumpFirstPass.shader” into “”TerrBumpFirstPassCustom.shader” – Edit “TerrBumpFirstPassCustom.shader” – Find line: Shader "Nature\/Terrain\/Custom Bumped Specular" { – Replace with: *So we […]<\/p>\n","protected":false},"author":1,"featured_media":3514,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[13,3],"tags":[686,568,14,168],"class_list":["post-3512","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-shaders","category-unity3d","tag-blending","tag-custom","tag-shader","tag-terrain"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2014\/12\/terrain_blending_sharp_custom_unity_2.jpg?fit=680%2C481&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p1KTaT-UE","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/3512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/comments?post=3512"}],"version-history":[{"count":12,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/3512\/revisions"}],"predecessor-version":[{"id":3926,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/3512\/revisions\/3926"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media\/3514"}],"wp:attachment":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media?parent=3512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/categories?post=3512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/tags?post=3512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}