c++ - GLSL glass effect plus depth peeling -

-

i'm working on rendering scene potentially has multiple intersecting transparent objects. makes standard method of sorting , drawing front problematic (even sorting triangles wouldn't work if triangles intersect). i've implemented depth peeling using glsl fragment shader second depth test. it's works great.

now want able apply effects using shaders. 1 of objects in scene syringe, , apply glass effect. if drawing front, easy - start shader when draw syringe, since behind in frame buffer. however, when using depth peeling approach won't work.

so questions are:

  1. how apply shader effects single object in scene when using depth peeling?
  2. how combine effect shaders depth peeling shader (assuming need run @ same time)?

i should note i'm pretty new @ using shaders, code examples appreciated!

i'd surprised if that's possible without ray tracing. far know, way use refraction shaders texture lookups in environment map. map can either precomputed, or it's computed on fly in separate rendering pass. latter option need 1 separate environment map , 1 pass each object uses shader. kinda doubt that's possible if objects intersect each other. if was, each of these passes need couple passes depth peeling. if wanted depth peeling shader passes factor in refractions surrounding objects, out of hand.


Comments

Post a Comment

Popular posts from this blog

Perl - how to grep a block of text from a file -

-
it can in xml or text format. how in general grep block of text in perl? <track type="ws"> <range> <rangestart>0</rangestart> <rangeend>146.912</rangeend> <locationindex>0</locationindex> <propertyindex>0</propertyindex> </range> </track> <track type="ps" id="1"> <range> <rangestart>0</rangestart> <rangeend>146.912</rangeend> <locationindex>1</locationindex> <propertyindex>1</propertyindex> </range> </track> i want grep type="ps" , till </range> . one solution open file, read line line , match block. open(fh, "file.txt"); foreach $line (<fh>) { if ($line =~ m/type="cc"(.*?)<\/range>/) { print $1; } } but there more optimal solution without reading file line l
Read more

delphi - How to remove all the grips on a coolbar if I have several coolbands? -

-
Image
if set mycoolbar.fixedorder true,only grip on first band hidden. well,if use delphi 7 create vcl forms application,then put coolbar on , create 3 coolbans hold other controls,only grip , top coolbands can hidden setting mycoolbar.fixedorder:=true. i've uploaded picture make things clear. you got fixedorder property wrong. fixed property not allow bands rearranged if set true . setting property of coolbar true keep user changing bands order @ runtime, user can still move , resize bands. can give advice can do, actual solution problem, well, have wait answer. my advice use 3 coolbars in row , setting "fixedorder" property true , bandborderstyle bsnone . way grip hidden on of them. about property, it's not bug of ide, actual preference of property.
Read more

javascript - Animating array of divs; only the final element is modified -

-
this baffling me @ moment. i'm experienced programmer looking throw bit of surprise fiancee on countdown page our wedding. desired effect simulated confetti falling behind main page. setup follows: i have array of divs in javascript. each div absolutely positioned on page. have interval set updates every 50 or milliseconds. on each tick, run loop on array of divs, , calculations , update positions. problem problem having, however, though can see divs created, stored array, , modified (in case, each has slight randomized rotation) during initialization phase, once tick update position starts, div stored in whatever last slot of array gets position updated. tried hard-coding each div index testing purposes, strictly last element update position. upon printing current "left" , "top" style values each div before , after calculations shows value has been changed, no visible change noticeable. here's basic code: javascript var container;
Read more