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Topics - Stefan

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3D-Tech News Around The Web / Twin Sector - play havoc with Havok
« on: September 09, 2009, 05:07:09 PM »
Headup Games developed a game which allegedly squeezes all out of the HAVOK engine.

Review at RPS, download demo at DemoNews or PCGH.

3D-Tech News Around The Web / Flam4CUDA 0.75 available
« on: September 09, 2009, 04:23:57 PM »
GPU Flame Fractal Renderer for flam3 cosmic recursive fractal flames implemented on GPU. Requires a CUDA-capable graphics card.

-Replaced the random number generater with a Combined Tausworthe generator.  This improves image quality for flames with large use of the various blur vars.
-Added opacity setting to xforms.
-Various changes to the render library.
-Massive performance increase, nearly doubling previous performance for iterations.
--Broke 1 BILLION iterations/sec!
-Fiddled with the threading code some more - flam4 no longer slows down the entire system while running.

multiDAC is intended to become a user-friendly tool for image- and videoprocessing in the field of deformation/movement analysis.
It is written in C# with some C routines using CPU/GPU parallelization (e.g. CUDA).

3D-Tech News Around The Web / IllustStudio - CUDA accelerated paint tool
« on: September 09, 2009, 04:17:53 PM »
IllustStudio is the paint tool which allows users to express pen strokes similar to real ones and to expand their range of expressions.
IllustStudio has filters corresponding to CUDA and realizes high-speed filtering process by using GPU calculation.
According to our research*, with CUDA enables the processing speed 35 times faster than without CUDA. * According to the ratio of CELSYS.

3D-Tech News Around The Web / Julia 4D ray tracing using CUDA
« on: September 09, 2009, 04:14:32 PM »
It was really funny to code that 4D rotation, 4D normal computation, light, colors...

Video at Youtube, the executable requires CUDA runtimes and GLEW32 in path - yet another CUDA app not working with ye olde 8800GTX (G80)  :(

   * Support for Catalyst™ driver 9.5-9.8.
    * Support for ATI RadeonTM HD 4890 graphics cards.
    * Support for ATI RadeonTM HD 4770 graphics cards.
    * Improved interface for selecting which ASICs to generate statistics for.
    * Compiler Statistics table now remembers which column to sort by.

Get them from ATI.

3D-Tech News Around The Web / CUDA Flocking Demo redux
« on: September 07, 2009, 04:25:24 PM »
We already reported about it back in April. Now DarkWaterStudios posted the video again at GameDev and announced that there probably will be an executable demo.

AMD LIano is said to be a processor with integrated GPU core while the CPU will be either dual or quad-core.

Read full story at NH.

Advantages are obvious, Flash-plugin is installed in approximately 95% of users, this is habitual, crossplatform technology.
Thanks to Alternativa3D, it is now availiable to show three-dimentional worlds, games, virtual tours or objects in browser.

3D-Tech News Around The Web / Flash Away3D engine tutorials
« on: September 06, 2009, 07:54:43 AM »
... new tutorial series over The Tech Labs that shows you how to create a 3D Flash game using the Away3D engine.

    * Getting Started
    * Creating a Level
    * Adding Enemies
    * Collision Detection

Read full story at Brighthub.

- DX11 Support – Support for DX11-based hardware.

Read full story at GameDev.

3D-Tech News Around The Web / Reliable Memory: Coming to a GPU Near You
« on: September 04, 2009, 10:00:30 AM »
GPUs are becoming more like CPUs. But in the critical area of error corrected memory, graphics hardware still lags. The lack of error correction is probably the single biggest factor that makes users of GPUs for high performance computing nervous. Some HPC applications are resistant to the occasional bad data value, but many are not. The good news is that graphics chip vendors are aware of the problem and it appears to be only a matter of time before GPUs get a memory makeover.

Read full story at HPCWire.

3D-Tech News Around The Web / NVIDIA SLI Profile Update 2
« on: September 04, 2009, 07:24:49 AM »
This version of the NVIDIA profile update should be used with v190.62 WHQL display driver.

It adds support for the following PC games:

    * Biohazard 5 (Resident Evil 5)
    * Call of Juarez: Blood in Bound Demo
    * Majesty 2: The Fantasy Kingdom Sim
    * Need for Speed: Shift

It also increases performance for the following PC game:

    * Batman: Arkham Asylum

Nvidia's 40 nanometer generation has to show what it is capable off. PC Games Hardware tests if switching to 40 nm, DirectX 10.1 and Co. was worth the effort.
We got our test sample... from an auction on Ebay.

Read full story at PCGH.

The winners of the UK's premier computer games design competition, who are also the sole nominees for the BAFTA Ones to Watch award, have been announced at Dare ProtoPlay at the Edinburgh Festival Fringe.

In principle, an unlimited number of stacked crystal layers can be fabricated on silicon to create devices densely interconnected with nanowires

Stanford researchers have developed a method of stacking and crystalline semiconductor layers that sets the potential for three-dimensional microchips.

Read full story at DDJ.

3D-Tech News Around The Web / Blender 2.49b Bugfix Release
« on: September 03, 2009, 12:56:14 PM »
Blender 2.49b Bugfix Release


    * Update for new OpenAL windows library.
    * Update Japanese translation.
    * Upgrade extern/xvidcore to version 1.22. This fixes Xvid crashing on linux 64 bit.
    * Updated Blender/Python API and GameEngine docs.

Various Bugs:

    * SoftBody, vertex groups were not notified on deletion & fixes for Mass and Spring Painting
    * Softbody, non mesh objects missing initializers [bug #18982]
    * Self Shadow Vertex Colors, improved blur method to give more even results.
    * Converting nurbs to a mesh ignored smoothing for Alt+C and from python.
    * Object Active to Other, Fix python error when running in local view.
    * Ancient resource leak where checkPackedFile would open a file and never close it.
    * Fix for uninitialized memory use with X11 keyboard and tablet events.
    * Fix for building with CLang (LLVM)

Render Bugs:

    * Using LightGroups override for material doesn't work for preview renders.
    * Render Stamp, error in setting the alpha value when drawing text into a char buffer.
    * Lumma Matte, Fix in low value setting.
      Originally checked against the wrong channel (chroma) instead of the luminence channel. Changed default value for high value to 1.0 from 0.0
    * Baking selected to active with nearby dupliframes objects crashes blender [bug #19029]
    * Fix for high energy sunlamps, turning specular black [bug #18837]

Game Engine Bugs:

    * Saving runtime on Windows didn't work with python2.6
    * Let IPO's animate the ref value for KX_BlenderMaterial's

Game Engine Python Bugs:

    * Converting a mesh from a python argument was broken but happened to work in some cases.
    * Memory leak fix for action.channelNames.
    * Was writing to freed memory when freeing a python object in some cases.
    * Removing GameLogic.EvalExpression(), was unstable.
    * Crash fix when casting a ray to the same location as the object.
    * Fixed KX_PolyProxy returning improper VertexIndex with mixed triangles and quads with using .getVertexIndex() and .v1, .v2, etc. [bug #19254]
    * Fixed obj.sendMessage() with 4 arguments crashing blender [bug #18963]

Game Engine Bullet Bugs:

    * Crash fix when a parent compound object didn't have a physics controller.
    * Fix for the torque actuator x -& y-axis not working.

Sequencer Bugs

    * IPO curve-deletion resulted in non-working effect
    * easy retiming only allowed enlarging of strips, now shrinking is also possible (easy retiming: use the right display handle of input strip and shrink or enlarge, will make the speed of the strip exactly fit the effect strip's length)
    * frames after end-of-display of input strips can now be accessed.
    * frame blending can now be done on more than two frames, enabling really fine grained motion blur if you speed up a sequence with high factors (bigger than two).
    * Scene-Strip rendering with compositor scenes failed, if they had no camera attached.
    * Fixed hdd-audio for sample formats other than 16 bit (8 bit eg).

Import/Export Bugs

    * FBX Export, Incorrect formatting that broke some converters.
    * BVH Motion Capture Import, Did not support single rigid body objects. [bug #18949]
    * OBJ Import, fix for importing of transparent faces from .mtl files - ZTrans now is set for them as well. (improves import from SketchUp)
    * Collada export, Empty material slot would raise a python error.
    * Collada import, fixes for increased Sketchup interoperability and more.
    * Quake MAP Export, empty nodes were not exported, also noticed files were invalid if there were no meshes or surfaces.
    * Quake MAP Export, had support for single triangular brush unnecessarily disabled.
    * Quake MD2 Export, Fix for vertex normals [patch #19206]

Python API

    * Mathutils (quat_a*quat_b) was broken, returned (quat_a*quat_a) instead.
    * Support for editing properties IpoCurve.driverBone and IpoCurve.driverBone2 and modifies IpoCurve.driverChannel to allow OB_ROT_DIFF.
    * Documentation corrections.
    * Support for rendering background scenes different from the active scene.
    * scene.render.render() now behaves the same in interactive and background mode
    * scene.render.saveRenderedImage() now works correctly in background mode
    * Armature active bone can be set.


    * 16bit SGI image loading
    * When BLENDER_FORCE_SWAPBUFFERS env variable is defined, a function is enabled that fixes flickering for some Intel and Radeon cards.

    * Python API - Particles
          o Draw As variable and dict
          o Strand render toggle
          o Object, psys variable in duplicate
          o Material, Strand render variables
          o Texture, Use colorbands
          o Lamp, Spot buffer type selection

    * Game Engine Physics support for reinstancePhysics mesh from Python and the dynamic actuator.
          o ReplaceMesh Actuator option to replace the physics mesh and display mesh + python api options.
          o Video and blend file demo.

    * Mouse focus sensor "pulse" option to pulse TRUE when the object under the mouse changes.

    * EDL importer for the sequencer. supports...
          o audio, video edits
          o fades, wipes, speed changes (video only)
          o importing from multiple reels

3D-Tech News Around The Web / NVIDIA NEXUS: GPU Development in Visual Studio
« on: September 01, 2009, 08:00:43 PM »
Unleash your productivity with NEXUS, NVIDIA's new development environment for GPU Computing and graphics applications that use CUDA C, OpenCL, DirectCompute, Direct3D, or OpenGL.

NEXUS introduces native GPU debugging and platform-wide performance analysis tools for both computing and graphics developers, fully integrated into Visual Studio 2008.

More information about NEXUS will be available at the GPU Technology Conference, Sept 30th - Oct 2nd, 2009.

3D-Tech News Around The Web / Normal Mapped Screen Space Diffuse Occlusion
« on: September 01, 2009, 05:15:06 PM »
With everyone doing SSAO these days I decided to give it a try too. I developped an extension of the algorithm, that shows how to add high frequency details to the ambient occlusion term. The technique uses 3 color components to store the occlusion over each third of the hemisphere for each sampling position (whereas standard SSAO samples over a 'whole' hemisphere for each pixel in screen space). Each component is then blurred using a so-called 'bilateral filter' as usual. In this work I did a separate edge filter pass before the blur. In the end, the normal map is read, and occlusion is computed by using a weighting of the normal with respect with each sampling direction. This is very similar to the source shading used in half-life 2, but applied to screen space. The executable also has additionnal features such as diffuse bleeding. The technique can somewhat enhance environments where baking of the lighting is not possible (dynamic or/and big worlds ...). The aim of the sample is to demonstates the visual enhancement that normal maps brings, but speed-wise it can certainly be improved :).

This sample requires a recent DirectX 9.0c runtime and a Shader 3.0 capable GPU.

Executable can be found here :

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