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Type: Posts; User: Alemarius Nexus

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  1. Uniform Buffer Objects vs. Classic Uniforms Performance

    Hi,

    I'm currently playing around with some of the more recent technologies in OpenGL, hoping to speed up the rendering code of my engine a bit. One thing I've done is using UBOs instead of the...
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    Re: FBO problems on ATI Radeon X1300

    Unfortunately the real program I'm having problems in does not only copy a textured object from one framebuffer to another. It's an implementation of the weighted average algorithm for which I need...
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    Re: FBO problems on ATI Radeon X1300

    I thought RGBA16 would be more portable than RGBA16F, because the float formats became core in later versions of OpenGL. At least according to glGetTexLevelParameter and gDEBugger, RGBA16 was really...
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    FBO problems on ATI Radeon X1300

    Hi,

    I have a problem with FBOs on my old ATI Radeon X1300 on Windows XP 32 bit using the legacy Catalyst 10.2 driver, which is the latest one with support for this GPU. I'm using...
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    Float Equality

    Hi,

    I have recently implemented depth peeling in my program and I seem to have problems with floating point equality in my fragment shader.
    First, I know you should not compare floats for...
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    Re: Front-to-back Blending

    OK, I think I understand. So for B2F you don't actually need a clear color because the opaque background is processed first, and if you blend the background over the clear color, the clear color is...
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    Re: Front-to-back Blending

    I'll take a look at premultiplied alpha once I understood this reverse blending. After all I want to implement different ways of order independent transparency for different situations, so I'll still...
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    Re: Front-to-back Blending

    I know that these are the equations I'm searching for, but I want to understand how to calculate them in general. For example, if I chose a different equation for back-to-front blending, how would I...
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    Front-to-back Blending

    Hi,

    I've been looking for a way to make transparency/translucency work in my program and after I decided that depth sorting would be way to slow to do on a per-frame basis, I stumbeled upon the...
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    Re: Only half screen displayed on OS X

    I've just installed OS X Leopard and the problem seems to be gone, so this could really be the mentioned driver bug. I guess for now I just have to accept that it doesn't work on 10.6 with Nvidia.
    ...
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    Only half screen displayed on OS X

    Hi,

    First of all, I don't actually know if my problem is related to OpenGL, but I suspect it might be. So if you want to hit me for using the wrong forum for this post, please do it softly.

    I...
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