ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Silicon Graphics Inc filed Critical Silicon Graphics Inc Priority to US09/231,405 priority Critical patent/US6545685B1/en Assigned to SILICON GRAPHICS, INC. Original Assignee Silicon Graphics Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US09/231,405 Inventor Angus Dorbie Current Assignee (The listed assignees may be inaccurate. Google Patents Method and system for efficient edge blending in high fidelity multichannel computer graphics displaysĭownload PDF Info Publication number US6545685B1 US6545685B1 US09/231,405 US23140599A US6545685B1 US 6545685 B1 US6545685 B1 US 6545685B1 US 23140599 A US23140599 A US 23140599A US 6545685 B1 US6545685 B1 US 6545685B1 Authority US United States Prior art keywords frame overlap region video frame blended computer Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US6545685B1 - Method and system for efficient edge blending in high fidelity multichannel computer graphics displays If your data is pre-rendered, then drawing and blending could be done in the same pass – maybe not as flexible as drawing first, though.US6545685B1 - Method and system for efficient edge blending in high fidelity multichannel computer graphics displays You don’t need to draw to texture, but you could do it that way. I don’t think the stencil buffer is what you want…
(I was using a FX 5700 and barely maintaining 30 fps at 1024x768) On faster hardware, and perhaps a tweaked FP, it may be better. This won’t do gamma correction for you, but if a constant attenuation factor (per pixel) is sufficient (as it often can be for overlap blending) then you can accomplish it with a blending pass. Do you have any idea of the best way to do it with OpenGL (I need performance, then minimize pixel-fill !)?
So I want to do blending and intensity (gamma) correction on the output frame. I want to do soft edge-blending (of 2 projected images from 2 graphic cards, lets say Quadro 3000G) with OpenGL on a 3D engine (60Hz).
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