{"id":332,"date":"2011-12-16T22:56:35","date_gmt":"2011-12-16T19:56:35","guid":{"rendered":"http:\/\/unitycoder.com\/blog\/?p=332"},"modified":"2013-08-15T21:56:23","modified_gmt":"2013-08-15T18:56:23","slug":"metablob-shader-testin","status":"publish","type":"post","link":"https:\/\/unitycoder.com\/blog\/2011\/12\/16\/metablob-shader-testin\/","title":{"rendered":"Metablob shader testing"},"content":{"rendered":"

\"\"
\nMetablob shader testing.<\/p>\n

2D metablobs..hmm..could this be used for (2D) fluids somehow?<\/p>\n

Instructions:<\/strong><\/p>\n

– New scene
\n– Add plane, Location: 0,0,0\u00a0 Rotation: 0,0,0
\n– Add camera, Location: 0,10,0 Rotation: 90,0,0 (its looking down the plane)
\n– Add material using this shader to the plane, you should see some blobs (its using screenposition, so you might not see blobs in editor, depending on your view pos)<\/p>\n

Download source:<\/strong>
\nblobshader.unityPackage<\/a><\/p>\n

Shader source: (v1.0)
\n<\/strong><\/p>\n

\r\n\/\/ ORIGINAL GLSL SHADER: 'Metablob' by Adrian Boeing (2011)\r\nShader "mShaders\/mblob1"\r\n{\r\nProperties\r\n{\r\n}\r\nSubShader\r\n{\r\nTags {Queue = Geometry}\r\nPass\r\n{\r\nCGPROGRAM\r\n#pragma target 3.0\r\n#pragma vertex vert\r\n#pragma fragment frag\r\n#include "UnityCG.cginc"\r\n\r\nstruct v2f {\r\nfloat4 pos : POSITION;\r\nfloat4 color : COLOR0;\r\nfloat4 fragPos : COLOR1;\r\n};\r\n\r\nv2f vert (appdata_base v)\r\n{\r\nv2f o;\r\no.pos = mul (UNITY_MATRIX_MVP, v.vertex);\r\no.fragPos = o.pos;\r\no.color = float4 (1.0, 1.0, 1.0, 1);\r\nreturn o;\r\n}\r\n\r\nhalf4 frag (v2f i) : COLOR\r\n{\r\nfloat animtime = _Time*10.0;\r\n\/\/the centre point for each blob\r\nfloat2 move1;\r\nmove1.x = cos(animtime)*0.4;\r\nmove1.y = sin(animtime*1.5)*0.4;\r\nfloat2 move2;\r\nmove2.x = cos(animtime*2.0)*0.4;\r\nmove2.y = sin(animtime*3.0)*0.4;\r\n\/\/screen coordinates\r\nfloat2 p = -1.0 + 2.0 * i.fragPos.xy \/ float2 (7,7);\r\n\/\/radius for each blob\r\nfloat r1 =(dot(p-move1,p-move1))*8.0;\r\nfloat r2 =(dot(p+move2,p+move2))*16.0;\r\n\/\/sum the meatballs \/\/ uh..typo maybe Oo?\r\nfloat metaball =(1.0\/r1+1.0\/r2);\r\n\/\/alter the cut-off power\r\nfloat col = pow(metaball,8.0);\r\n\/\/set the output color\r\nreturn float4(col,col,col,1.0);\r\n}\r\nENDCG\r\n}\r\n}\r\nFallBack "VertexLit"\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Metablob shader testing. 2D metablobs..hmm..could this be used for (2D) fluids somehow? Instructions: – New scene – Add plane, Location: 0,0,0\u00a0 Rotation: 0,0,0 – Add camera, Location: 0,10,0 Rotation: 90,0,0 (its looking down the plane) – Add material using this shader to the plane, you […]<\/p>\n","protected":false},"author":1,"featured_media":333,"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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[4,3],"tags":[214,82,14],"class_list":["post-332","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-demos","category-unity3d","tag-metaball","tag-metablob","tag-shader"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2011\/12\/mblobshare1.jpg?fit=680%2C419&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p1KTaT-5m","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/332","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=332"}],"version-history":[{"count":9,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/332\/revisions"}],"predecessor-version":[{"id":2276,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/332\/revisions\/2276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media\/333"}],"wp:attachment":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media?parent=332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/categories?post=332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/tags?post=332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}