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Outerra: July 2013

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Friday, July 19, 2013. Hacking AMD OpenGL drivers. Even though the logarithmic depth buffer. On Direct3D there's a technique that can provide sufficient depth buffer precision - reverse mapping of far/near planes in a normal floating-point depth buffer. In OpenGL it can't be used directly because of a design flaw that causes a huge loss of precision in depth value computation (not just for the floating point depth buffers, see here. See more detail in maximizing depth buffer range and precision. Where Fc...

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Outerra: May 2012

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Sunday, May 27, 2012. Grass distance 45m; 400k blades of grass. The second stage generates grass blades dynamically using the canopy data: terrain elevation, grass height and color. Canopy data have resolution roughly 30cm, and the amount of grass blades varies depending on the level of detail, that in turn depends on the distance from the camera. Levels of detail highlighted. Triangle strips for long and short grass blades. Original patch of grass from which the blades above were extracted.

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Outerra: May 2015

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Wednesday, May 27, 2015. Evaluation of 30m elevation data in Outerra. In September 2014 it was announced that the 30m (1") SRTM dataset will be released with global coverage. Previously available only for US region). This was eagerly expected by a lot of people, especially simulator fans, as the 90m data are lacking finer erosion patterns. Final release is planned for September 2015, but as of now already a large part of the world is ready. However, an interesting thing is that a 76/30 dataset (76m fract...

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Outerra: May 2014

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Sunday, May 11, 2014. Double precision approximations for map projections in OpenGL. Written mainly for my own reference, but it's also possible that someone else finds it useful as well). The problem: OpenGL specification/extension ARB gpu shader fp64. That brings support for double precision operations on the GPU specifically states that double-precision versions of angle, trigonometry, and exponential functions are not supported. All we get are the basic add/mul operations and sqrt. Projections. F...

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Outerra: Double precision approximations for map projections in OpenGL

http://outerra.blogspot.com/2014/05/double-precision-approximations-for-map.html

Sunday, May 11, 2014. Double precision approximations for map projections in OpenGL. Written mainly for my own reference, but it's also possible that someone else finds it useful as well). The problem: OpenGL specification/extension ARB gpu shader fp64. That brings support for double precision operations on the GPU specifically states that double-precision versions of angle, trigonometry, and exponential functions are not supported. All we get are the basic add/mul operations and sqrt. Projections. F...

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Outerra: February 2012

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Saturday, February 25, 2012. Outerra Tech Demo released! Is a unique 3D engine, a world rendering engine capable to seamlessly render whole planets from space down to the ground level. It can use real world data to render the planets realistically, while it also dynamically refines the data using procedural algorithms to provide high ground-level detail. Finally here comes the Outerra tech demo, coming together with the alpha release of our game Anteworld. Outerra Anteworld 0.7.13.3478. Created from real...

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Outerra: December 2014

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Sunday, December 7, 2014. TitanIM, an Outerra-based military simulation platform. Revealed at the world's largest modeling, simulation and training conference oriented at military use, I/ITSEC. Orlando 1-5.Dec 2014), TitanIM. Is a new simulation platform built on top of the Outerra engine, utilizing its ability to render the whole planet with the full range of detail levels from space down to the blades of grass. A new era: TitanIM/Outerra. Titan booth was shared with two well-known companies that are al...

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Outerra: July 2012

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Wednesday, July 25, 2012. Book web page has gone live. And is available for preorders. We have contributed two chapters to it, Laco "Angrypig" Hrabcak co-wrote the Asynchronous Buffer Transfers. Chapter (together with Arnaud Masserann), and I wrote In-Game Video Capture with Real-Time Texture Compression. Laco's chapter has been also made available online. As one of the sample chapters. Monday, July 2, 2012. As one of the steps necessary to support lakes, dikes and lands below the sea level.

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Outerra: February 2014

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Sunday, February 9, 2014. 2013 Retrospective, 2014 Look Ahead. A brief list of main features that were released in Outerra Anteworld sandbox in the past year:. Enhanced terrain texturing, terrain normal maps. Dynamic and adjustable time flow. Realtime terrain deformation - craters. Support for Oculus Rift. Support, can be optionally combined with Rift, 3rd party TrackIR plugin support. Support, amphibious vehicles support. FBX importer, export of models in self-installing OTX format. The whole setup used...