{"id":2732,"date":"2014-02-23T02:45:06","date_gmt":"2014-02-22T23:45:06","guid":{"rendered":"http:\/\/unitycoder.com\/blog\/?p=2732"},"modified":"2014-04-13T19:30:39","modified_gmt":"2014-04-13T16:30:39","slug":"explosion-effect-shader","status":"publish","type":"post","link":"https:\/\/unitycoder.com\/blog\/2014\/02\/23\/explosion-effect-shader\/","title":{"rendered":"Explosion Effect (shader)"},"content":{"rendered":"

\"explosion_shader_effect_unity\"<\/a><\/p>\n

Testing some big explosion effect with shader.\u00a0Still missing most particle effects..<\/p>\n

Info:<\/strong>
\n– Vertex extrusion using noise texture & timer\/distance..
\n– Explosion cloud + shockwave is from particle system<\/p>\n

Webplayer:<\/strong>
\nhttp:\/\/unitycoder.com\/upload\/demos\/ExplosionEffectShader\/<\/a><\/p>\n

Reference<\/strong>:
\nArmageddon (explosions) video : http:\/\/youtu.be\/Tq4o-B5vWYk?t=2m25s<\/a><\/p>\n

Shader source:<\/strong><\/p>\n

\r\n\r\nShader "unitycoder\/GroundExplo"\r\n{\r\nProperties\r\n{\r\n_MainTex ("Texture", 2D) = "white" {}\r\n\r\n_Color ("Color", Color) = (1,1,1,1)\r\n\r\n_ExtrudeTex ("Extrusion Texture", 2D) = "white" {}\r\n_Amount ("Extrusion Multiplier", Range(0,5)) = 0\r\n_Pos ("Pos", Vector) = (0,0,0,0)\r\n}\r\n\r\nSubShader\r\n{\r\n\/\/\u00a0\u00a0 \u00a0Pass {\r\n\/\/\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0Cull Off\r\n\/\/\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0ZWrite On\r\n\/\/\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0ZTest Always\r\n\r\nTags { "RenderType" = "Opaque" "Queue" = "Geometry" }\r\nCGPROGRAM\r\n#pragma target 3.0\r\n#pragma surface surf Lambert vertex:vert\r\n#include "UnityCG.cginc"\r\n\r\n\r\nstruct Input {\r\nfloat2 vpos;\r\nfloat2 uv_MainTex;\r\n};\r\n\r\n\r\nfloat4 _Color;\r\nfloat4 _Pos;\r\nfloat _Amount;\r\nsampler2D _ExtrudeTex;\r\nfloat4\u00a0 _ExtrudeTex_ST;\r\n\r\nvoid vert (inout appdata_full v, out Input o)\r\n{\r\n\r\nfloat t = _Time.y*2;\r\n\r\n#if !defined(SHADER_API_OPENGL)\r\nfloat tex = tex2Dlod(_ExtrudeTex, float4(float2(v.texcoord.x,v.texcoord.y),0.0,0.0)).r;\r\nfloat3 worldPos = mul (_Object2World, v.vertex).xyz;\r\nfloat dist = distance(worldPos,_Pos.xyz);\r\nfloat3 dir = -normalize(_Pos.xyz-worldPos)*0.25f;\r\n\r\n\r\nif (t>dist)\r\n{\r\nfloat3 extrude = (v.normal+dir)*tex.r* sqrt(_Amount * (t-dist));\r\nv.vertex.xyz += extrude;\r\n}\r\n\r\no.vpos = v.vertex.xy;\r\n\r\n#endif\r\n}\r\n\r\nsampler2D _MainTex;\r\n\r\n\r\nvoid surf (Input IN, inout SurfaceOutput o)\r\n{\r\nhalf4 tex1 = tex2D (_MainTex, IN.uv_MainTex);\r\nhalf4 tex2 = tex2D (_MainTex, IN.uv_MainTex*5-_Time.yy*0.5f)+_Color;\r\nhalf4 col = lerp(tex1,tex2,IN.vpos.y);\r\no.Albedo = col;\/\/*(1-_Color*IN.vpos.y);\r\n}\r\n\r\nENDCG\r\n}\r\nFallback "Diffuse"\r\n}\r\n\r\n<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Testing some big explosion effect with shader.\u00a0Still missing most particle effects.. Info: – Vertex extrusion using noise texture & timer\/distance.. – Explosion cloud + shockwave is from particle system Webplayer: http:\/\/unitycoder.com\/upload\/demos\/ExplosionEffectShader\/ Reference: Armageddon (explosions) video : http:\/\/youtu.be\/Tq4o-B5vWYk?t=2m25s Shader source: Shader "unitycoder\/GroundExplo" { Properties { _MainTex […]<\/p>\n","protected":false},"author":1,"featured_media":2733,"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":[270,597,50,78,598,105,14,33],"class_list":["post-2732","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-shaders","category-unity3d","tag-animated","tag-armageddon","tag-effect","tag-explosion","tag-extrusion","tag-fx","tag-shader","tag-vertex"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2014\/02\/explosion_shader_effect_unity.jpg?fit=680%2C335&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p1KTaT-I4","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/2732","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=2732"}],"version-history":[{"count":5,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/2732\/revisions"}],"predecessor-version":[{"id":2885,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/2732\/revisions\/2885"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media\/2733"}],"wp:attachment":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media?parent=2732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/categories?post=2732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/tags?post=2732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}