Saving buffer info
Author
Does anyone know how to save and recall both depth and color buffer infomation? I need to be able to save a part of a sence and recall it at any time without losing it.
jkettles16 of Venosoft
"Life is a double edged sword, we always hope to strike though adversity with the shining side..."
jkettles16 of Venosoft
glReadPixels.
but note that it''s very very very, VERY, VERY,
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but note that it''s very very very, VERY, VERY,
VERY
slow.| - Project-X - my mega project.. big things comming soon - | - adDeath - an ad blocker I made - | - email me - |
Author
I thought glReadPixels only saved color buffer info? That still leaves me without a way to save the depth buffer. My main problem is I''m running the program on a computer with low specs, and I really want to cut out as much ploygon drawing as possible, but I can''t seem to think of any other ways to optimize the program further. My idea was to draw the major stuff that never needs to be updated once and keep track of it''s color and depth info for every subsequent frame. When I need the info I could do a quick buffer copy or something. I thought display lists for a moment but they have to excute those commands for drawing as well and they only do it maybe a slight bit faster, but not nearly fast enough. There must be some way to quick save and load full framebuffer info...
"Life is a double edged sword, we always hope to strike though adversity with the shining side..."
jkettles16 of Venosoft
"Life is a double edged sword, we always hope to strike though adversity with the shining side..."
jkettles16 of Venosoft
That probably would slow your program down further, there are no quick buffer reads or writes in OpenGL.
quote:Original post by RipTornslow.
glReadPixels.
but note that it''s very very very, VERY, VERY ,VERY
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Hmmm... could you be just a liiitle bit more specific - just how slow?
Crispy
PS - don''t bother answering this post - I rather enjoyed counting your very''s
quote:Original post by Crispy
Hmmm... could you be just a liiitle bit more specific - just how slow?
it''s
slow.
k?
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quote:Original post by RipTornOriginal post by Crispy
Hmmm… could you be just a liiitle bit more specific - just how slow?
it''s
slow.
k?
| - Project-X - my mega project.. big things comming soon - | - adDeath - an ad blocker I made - | - email me - |
Dammit - that''s a tad too slow… You sure absolutely about that?
Crispy
Ok, that was just obnoxiuos. Anyways, you can use glReadPixels to grab detph buffer data also I beleive.
just a thought ...you could try using display lists for the part of the scene that doesnt need to be rendered more then once....though I''m not sure of the increase/decrease in speed compared to a glReadPixels aproach
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