{"id":757,"date":"2012-03-15T01:38:09","date_gmt":"2012-03-14T22:38:09","guid":{"rendered":"http:\/\/unitycoder.com\/blog\/?p=757"},"modified":"2013-10-13T19:00:02","modified_gmt":"2013-10-13T16:00:02","slug":"fake-realtime-shadows-with-surface-shader","status":"publish","type":"post","link":"https:\/\/unitycoder.com\/blog\/2012\/03\/15\/fake-realtime-shadows-with-surface-shader\/","title":{"rendered":"Fake Realtime Shadows With Surface Shader"},"content":{"rendered":"

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

Yes! After several hours of shader errors, finally got this working, fake realtime shadows using shader (2D)<\/p>\n

Its using obstacle map texture (see image#2), so thats the 1st downside of it,
\nbut still better than nothing..<\/p>\n

More info later..<\/p>\n

Ideas to try:<\/strong>
\n– Blur the wall map texture, Soft shadows?
\n– Add 2nd pass for: combining the shadow, instead of 1st pass? or use 2nd pass for blurring?
\n– Would this work as camera shader, using depthmap as an automatic obstacle map? (*problem: how to get neighbour pixel colors from vertex color..?)
\n– Fake directional light shadows should be even easier?
\n– Use light attenuation for shadow \/ light strength?<\/p>\n

Current progress:<\/strong>
\n– Can use screenshot as an automatic wall mask texture, no need to create it manually
\n– But that creates another problem, the view should be same size as plane\/texture?
\n– Using depthmap as wall mask would give realtime shadows, with moving objects also,
\nbut no idea how to use depth pass like a texture+uv with Tex2D..<\/p>\n

Webplayer:<\/strong>
\nhttp:\/\/unitycoder.com\/upload\/demos\/mFakeShadowShader2\/<\/a><\/p>\n

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

—<\/p>\n

*image#2: obstacle texture map<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Yes! After several hours of shader errors, finally got this working, fake realtime shadows using shader (2D) Its using obstacle map texture (see image#2), so thats the 1st downside of it, but still better than nothing.. More info later.. Ideas to try: – Blur the […]<\/p>\n","protected":false},"author":1,"featured_media":766,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_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}},"categories":[4,3],"tags":[7,154,205,48,14,132],"class_list":["post-757","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-demos","category-unity3d","tag-fake","tag-free","tag-indie","tag-realtime","tag-shader","tag-shadows"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2012\/03\/more_fake_shadows_shader2.jpg?fit=680%2C570&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p1KTaT-cd","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/757","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=757"}],"version-history":[{"count":10,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/757\/revisions"}],"predecessor-version":[{"id":2483,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/757\/revisions\/2483"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media\/766"}],"wp:attachment":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media?parent=757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/categories?post=757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/tags?post=757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}