Radeon HD 2900 Global Illumination
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Uploader Comments (mousou01)
Top Comments
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It has nothing to do with raytracing. It's based on an irradiance probes (spherical harmonics representation) volumetric grid which is updated in real-time. When rendering a vertex, the grid is used to compute their ambient color. The reference algorithm is Nijasure / Pattanaik 2003. Only that DX10 is used for geomtric shaders which improves performance when rendering the cube maps for each probe.
4 years ago 3
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globe illumination FTW!!
2 years ago 2
All Comments (33)
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Dear mousou01,
It is my understanding that this is some sort of trick using spherical harmonics.
Additionally, this algorithm does not work if any object in the scene moves, because then the volumetric grid has to be re-computed in terms of occlusion. Is that true?
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it can
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great demos but they never try to apply it to a mass scale. it can't handle it yet.
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Sorry doc, 1 month of difference, than be calm and get a life, or look for hiring in Ati!
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The first ATI card to support DirectX10 was the Radeon HD 2900XT, launched on may 14, 2007, the HD2400 was launched on june 18, 2007, again, YOU are wrong.
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I have a HD2400, do you want to see the box and specs described inside? Search around web THEN speak
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The first ATI card to support DirectX10 was the Radeon HD 2900XT, launched on may 14, 2007, YOU are wrong.
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Wrong, the 1st is HD2400Pro (I've the AGP version)
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This demo can only be running under DX 10.1, but radiosity and even true raytracing has been shown possible even in DX7.
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Here is the demonstration.
ATI developers site
Perhaps this will not work in AMD R600,RV630,RV610 if there is not it.
I am lacking in a GS performance with the G80 system.
mousou01 4 years ago