AndrewVK Posted September 6, 2006 Author Share Posted September 6, 2006 PCloud is self-sufficient to store volume information for raymarcher. It is not a theory...it is already done. Capturing of V should not be a problem in this case...however I did not try to do it yet. Quote Link to comment Share on other sites More sharing options...
MADjestic Posted September 6, 2006 Share Posted September 6, 2006 A fog shader (aka Atmosphere Shader only has access to the current pixel colour I think. So at this (last) stage in the shading pipeline, I don't think it makes sense at all to try to access your point position as you're not shading geometry anymore. + what AndrewVK has said - I've just tried to capture v atribte and print it to console Quote Link to comment Share on other sites More sharing options...
MADjestic Posted September 6, 2006 Share Posted September 6, 2006 mmm... If fog shader has Cf/Af/Of attributes only - why can it motion blur i3d texture then? Isn't it the same as having v atribute inside a fog shader? Or is it some kind of clever filtering? Quote Link to comment Share on other sites More sharing options...
AndrewVK Posted September 6, 2006 Author Share Posted September 6, 2006 Actually i mean this workflow: Render volume as separate layer and output captured V to deep raster....MBlur layer in COPs...compose it over bacground. There is no other way. (except i3d of course) Quote Link to comment Share on other sites More sharing options...
MADjestic Posted September 6, 2006 Share Posted September 6, 2006 Actually i mean this workflow:Render volume as separate layer and output captured V to deep raster....MBlur layer in COPs...compose it over bacground. There is no other way. (except i3d of course) damn. this is most unpleasant. Quote Link to comment Share on other sites More sharing options...
AndrewVK Posted September 6, 2006 Author Share Posted September 6, 2006 sorry...russian language... Фог в мантре это не самостоятельный шейдер...это только модификатор сурфшейдера. Вольметрик не может существовать без какой либо поверхности позади нее. То что ты видиш волюметрик без геометрии на заднем фоне это всего навсего фича мантры которая подставляет невидимый куб по размерам фарклипа камеры. Эту фичу можно отключить в виндовых энвиронментах...непомню названия переменной... Мантра не умеет блурить фог...она умеет блурить движняк геометрии а потом поверх накладывать фог. У и3д есть есть фича для блурения....но это захардокоденая фич которая к мантровскому блуру не имеет никакого отношения. Так что с и3д в этом плане особых проблем не возникает. Проблемы начинаются когда ты пытаешся описать волуметрик чем либо отличным от и3д... Вот тут без блура в композе не обойтись. Quote Link to comment Share on other sites More sharing options...
MADjestic Posted September 6, 2006 Share Posted September 6, 2006 Thanks Andrew for explanation, now it makes sense. - For all the rest - I can translate Andrew's post - he explains the mechanics of mantra motion blur and why it is impossible to blur fog shader as it is. Quote Link to comment Share on other sites More sharing options...
kumpa Posted September 29, 2006 Share Posted September 29, 2006 hi! this shader is insanely nice! kumpa Quote Link to comment Share on other sites More sharing options...
AndrewVK Posted September 29, 2006 Author Share Posted September 29, 2006 Test scene: http://www.sidefx.com/index2.php?option=co...load&id=599 Quote Link to comment Share on other sites More sharing options...
kumpa Posted September 29, 2006 Share Posted September 29, 2006 Test scene:http://www.sidefx.com/index2.php?option=co...load&id=599 hi ! i tried this one as well but it has no noise settings kumpa Quote Link to comment Share on other sites More sharing options...
altbighead Posted September 29, 2006 Share Posted September 29, 2006 could you upload the otl versio too? Thanks Quote Link to comment Share on other sites More sharing options...
kumpa Posted September 29, 2006 Share Posted September 29, 2006 here it is ! kumpa mbmeta3d.otl Quote Link to comment Share on other sites More sharing options...
AndrewVK Posted October 2, 2006 Author Share Posted October 2, 2006 i tried this one as well but it has no noise settings Quote Link to comment Share on other sites More sharing options...
kumpa Posted October 2, 2006 Share Posted October 2, 2006 lol, i swear i didnt notice it Quote Link to comment Share on other sites More sharing options...
Visual Cortex Lab Posted October 2, 2006 Share Posted October 2, 2006 that's an hot thread man .... wow i love your shader... awesome work! Quote Link to comment Share on other sites More sharing options...
Ratman Posted October 2, 2006 Share Posted October 2, 2006 Hey madjestic, i'm wondering if you can translate that for us, really wondering more about this shader Quote Link to comment Share on other sites More sharing options...
MADjestic Posted October 5, 2006 Share Posted October 5, 2006 There you go, Ratman et all: Fog shader in mantra is not a self-consistent/independent shader Quote Link to comment Share on other sites More sharing options...
Visual Cortex Lab Posted October 5, 2006 Share Posted October 5, 2006 many thanks Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.