I'm trying to render 6 cubemap textures from within Maya. I have 6 90 deg fov cameras each looking down one of the major axes. All fine but when I use them in opengl program there's a visible seam (in reflection) between some of the maps. Probably because camera up vectors are not set correctly in Maya. How to orient the cameras (up vectors) properly?
cube maps - rendering from Maya
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Hi all, If I want to create 3 floating point cube environment map containing color, depth and normal of the scene, without the ARB_draw_buffers extension I must render at least 12 passes, right? The procedure may look like this: 1. Create a duble buffered, depth buffered floating point pbuffer. 2. Activate the pbuffer, use glDrawBuffer(GL_FRONT_LEFT) to render to front buffer 3. call wglSetPbufferAttribARB to assign which cubemap face to be rendered to. 4. render the scene 5. Repeat (3) and (4) 6 times. 6. call glDrawBuffer(GL_BACK_LEFT) to render to back buffer 7. repeat (3)(4)(5) but render the scene with geometry normal. This way the front buffer contains the color, back buffer contains the normal while the depth buffer contains depth information, right? My question is that how can I combine (6)(7) into (3)(4)(5) with ARB_draw_buffers so I can save the additional 6 passes? I tried to use glDrawBuffersARB(2, {GL_FRONT_LEFT, GL_BACK_LEFT}) and bind a fragment shader that writes color into gl_FragData[0] and normal into gl_FragData[1], but the result is two cubemap with nothing but black. Thank you for reading this message.
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cube maps - rendering from Maya
by Mirko Puhic » Fri, 01 Sep 2006 02:33:32 GMT
Similar Threads:
Heya group.
I've loaded a static cube map ("lobbycube.dds") to be used with a simple
sphere. The vertex has only position and normal as the reflection vector is
automatically generated.
Problem: The sphere is located at (0, 0, 0) and when I move the camera
around the sphere, it shows always the same face of the cubemap. In other
words, the appearance of the sphere is not affected by the camera's
position, it changes only when I change the looking direction.
So, what am I missing? I've looked through the SDK material, but didn't find
the solution. Do I need to deal with the texture transform flags, if yes,
what matrix should I pass as the transformation?
Thanks for any insightful help ! :)
2.CUBE SHADOW MAPPING questions
Let's assume, that I have cube shadow map for point light, is it possible to render the scene with this kind of shadows in a single pass? If yes, how the texture transormation matrix should look like (what are differences beetween matrix for it and for standard perspective shadow maps) ? thx. ---------------------------- Kryst(ian) gg 2217642
I am trying to write a script (I use 3dsmax) to generate a cube map of a room.
(like in the PRTdemo sample).
I believe what I do is write a script to 'stand' in the middle of the room and
shoot six pictures (up down left right forward & back.)
Is there some sample code that will create a cube map texture given the
six pictures (or any 3dsMax users out there)?
DxTex will do this, I believe, but it is all manually driven and would take
lots
of time for many rooms plus redoing evertime there is even the smallest
change
I'm on .DOT (2003) with the OCT SDK.
Thanks
--
Jackie
Is there any simple way to check if a dds file contains cube map or 2d tex? Will the createcubetexturefromfile fail if dds is 2d? thx.
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