Hi ive tried to switch over the shadow rendering to use render to depth texture rectangle but rendering to texture still seems orders of magnitude slower than copytexsubimage. The difference in framerate is something like 30fps with copytexsubimage, and 5fps render to texture. Does anyone have any ideas why this might be?
because nvidia drivers implemented rendertotexture crappy. but, according to cass, it should change in the next release.. i hope (and bet) its true. wish us all the best
(oh, and i hope rendertotexture stops to be buggy as well
http://davepermen.net - if i could stay true to my heart, i would feel totally free
Does that mean the beta 40.71's as well?
Yes, see this thread: http://www.opengl.org/discussion_boa...ML/007527.html
XEngine - The Platform- and API-Independent 3D Engine
with Programmable Pipeline Support: [URL=http://xengine.sourceforge.net
My]http://xengine.sourceforge.net
Thanks Asgard. I guess that thread was just a couple days ago so maybe if we are lucky we can see fast (like it is in d3d) RTT (or RTT Rectangle) in 1 - 2 weeks.
Is this problem only on nvidia cards. Never mind very old cards that don't support multitexturing and cubemapping, and such.
V-man
------------------------------
Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);
AFAIK, yes. At least on Radeon series cards it's very fast. For instance do my "Shadows that don't suck" demo run at like 4x as high framerate on a R8500 than a GF3.Originally posted by V-man:
Is this problem only on nvidia cards.
Unfortunatly, I dont have access to any Radeon series cards.Originally posted by Humus:
AFAIK, yes. At least on Radeon series cards it's very fast. For instance do my "Shadows that don't suck" demo run at like 4x as high framerate on a R8500 than a GF3.
Can you tell me if it's actually faster than plain vanilla copysubtex or ....
It should be in principal.
V-man
------------------------------
Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);
Hey humus what extensions are you using in "shadows don't suck", on the ati website http://www.ati.com/developer/sdk/rad...fo/Prog3D.html it doesn't have any shadow extensions there. Is the page just out of date?
Yeah, it's faster, but it's not with out it's own problems unfortantly (like the cull face was wrong at one point, but I think that fixed now).Originally posted by Humus:
AFAIK, yes. At least on Radeon series cards it's very fast. For instance do my "Shadows that don't suck" demo run at like 4x as high framerate on a R8500 than a GF3.
BTW, when is your site going to be back up?
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