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Messages - Stefan

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Robert Hess has a roundtable discussion with industry experts to help you understand exactly what DirectCompute is and the kinds of software problems that you can apply DirectCompute to leaverage the GPU for computation.

Changes include:

    * Reference Results: changed UI from multiple combo-boxes to single list-view, making it easier to select, view and modify reference results. You can still only select 4 devices for now, with the earliest unselected if you check more than 4.
    * AVX instruction set: extensive support in all benchmarks: Multi-Media (integer & float), Memory Bandwidth (integer & float, buffered and unbuffered/streaming), Cache & Memory (non-streaming). Removed EMMX.
    * OpenCL: unified module supporting all manufacturer versions (ATI, nVidia, etc.), can use multiple cards from multiple vendors in parallel.
    * OpenGL: now supports versions 4.0 and 3.3; ARB native double support on ATI 5800 and nVidia Fermi (previously only ATI specific doubles were supported).
    * Ranking Engine: is now on-line and localised in all the languages Sandra supports.

Download at BenchmarkHQ

3D-Tech News Around The Web / GLSL Minifier
« on: June 16, 2010, 05:34:51 AM »
GLSL Minifier is a tool to pack GLSL shader code. It generates a code as small as possible that is equivalent to the input code. The generated code is also designed to compress well. It has been optimized for use with Crinkler, but should perform well with any other compression tool. GLSL Minifier generates a C header file you can include from your code. This file contains the shader code in a compact string and macros to retrieve the name of the uniforms (because they are renamed).


The DirectX SDK (June 2010) release includes the fixes to the DDSWithoutD3DX and DDSWithoutD3DX11 samples I mentioned in earlier posts. The Programmer's Guide for DDS in the Windows DirectX Graphics documentation was also updated to reflect the latest format details.

There is a footnote at the end of the documentation chart that I wanted to expand on, and this is a consequence of D3DX having a long-standing bug in the way it reads and writes 10:10:10:2 format DDS data files.

Full story at MSDN

3D-Tech News Around The Web / Simulation of glass surfaces
« on: June 15, 2010, 06:40:40 PM »


The Vienna Computing Library (ViennaCL) is a scientific computing library written in C++ and based on OpenCL. It allows simple, high-level access to the vast computing resources available on parallel architectures such as GPUs and is primarily focused on common linear algebra operations (BLAS level 1 and 2) and the solution of large systems of equations by means of iterative methods. The following iterative solvers are implemented:

    * Conjugate Gradient (CG)
    * Stabilized BiConjugate Gradient (BiCGStab)
    * Generalized Minimum Residual (GMRES)

An optional ILU preconditioner can be used, which is at present computed on the CPU and may thus not lead to overall performance gains.

The library interface is similar to that of the ublas library, which is shipped with Boost. The iterative solvers can be used either on the CPU with ublas types or on the GPU using ViennaCL types.

More information can be found on the project homepage located at


Download from NZONE
No challenge for contemporary GPUs, but nice to watch.

3D-Tech News Around The Web / NVIDIA Driver 257.21 WHQL available
« on: June 15, 2010, 05:41:28 PM »
New in Version 257.21

Upgrades PhysX System Software to version 9.10.0223.
Adds support for OpenGL 4.0 for GeForce GTX 400 Series GPUs.
Adds support for CUDA Toolkit 3.1 which includes significant performance increases for double precision math operations. See CUDA Zone for more details.
Adds a new NVIDIA Control Panel setup page for SLI and PhysX for ultimate control over multi-gpu configurations.
Adds a new NVIDIA Control Panel feature for ultimate control over CUDA GPUs, allowing the user to effectively choose which GPU will power each CUDA application.

PhysX System Software is the same as the one day older beta version, except from being digitally signed at May 28th and messed up time stamps in "common" folder.

3D-Tech News Around The Web / Fraps 3.2.3 Released
« on: June 15, 2010, 06:15:12 AM »

3.2.3 - 14th Jun 2010
- Added support for full-size video capture above 2560x1600
- Fixed crash when loading Fraps under WinXP with 6-core CPU
- Fixed crash when enabling monitor DWM option on some configurations
- Fixed Fraps altering error flag on calls to GL SwapBuffers
- Fixed sound input switching at startup on XP systems
- Fixed counter appearing in VS2010

3D-Tech News Around The Web / OpenCL 1.1 specifications
« on: June 15, 2010, 12:48:00 AM »
OpenCL 1.1 includes significant new functionality including::

    * Host-thread safety, enabling OpenCL commands to be enqueued from multiple host threads;
    * Sub-buffer objects to distribute regions of a buffer across multiple OpenCL devices;
    * User events to enable enqueued OpenCL commands to wait on external events;
    * Event callbacks that can be used to enqueue new OpenCL commands based on event state changes in a non-blocking manner;
    * 3-component vector data types;
    * Global work-offset which enable kernels to operate on different portions of the NDRange;
    * Memory object destructor callback;
    * Read, write and copy a 1D, 2D or 3D rectangular region of a buffer object;
    * Mirrored repeat addressing mode and additional image formats;
    * New OpenCL C built-in functions such as integer clamp, shuffle and asynchronous strided copies;
    * Improved OpenGL interoperability through efficient sharing of images and buffers by linking OpenCL event objects to OpenGL fence sync objects;
    * Optional features in OpenCL 1.0 have been bought into core OpenCL 1.1 including: writes to a pointer of bytes or shorts from a kernel, and conversion of atomics to 32-bit integers in local or global memory.

The OpenCL 1.1 specification and header files are available in the Khronos Registry
The OpenCL 1.1 Quick Reference card.
The OpenCL 1.1 Online Man pages.
OpenCL PDF Overview Click here (June 2010)

This beautiful abbey pack is based on a real abbey based in England, of which optimum care has been taken to reproduce the still standing structures that exist today. The pack is a faithful recreation of the site. Before the pack was produced, a trip was taken to the abbey, of which hundreds of pictures where taken, to carefully recreate the buildings and maintain total authenticity. All pack pieces come as separate elements, so you can actually design your own abbey scenario.


3D-Tech News Around The Web / Unity 3 Image Effects Video
« on: June 14, 2010, 06:10:07 PM »
Unity would like to share a little Video showing some of the new Image Effects in action.

3D-Tech News Around The Web / Filter Vuvuzelas from TV sound
« on: June 14, 2010, 05:50:01 PM »
According to my provider you should mute 233 and 932 Hertz in your equalizer.
CHIP notes overtones at 466, 932 and 1864 Hertz.

To the subscribers of german T-Home Entertainment! Misc. channels have been unlocked for direct RTP access.
Intentionally for beta testers of "Windows Media Room 2", but VLC does job already now  8)

Announcement here

No public download, but you can check the release notes

new bot attack by "two0426"  >:(

3D-Tech News Around The Web / The GPU Computing Era
« on: June 12, 2010, 08:39:42 AM »
As we enter the era of GPU computing, demanding applications with substantial parallelism increasingly use the massively parallel computing capabilities of GPUs to achieve superior performance and efficiency. Today GPU computing enables applications that we previously thought infeasible because of long execution times.

Read More (pdf)


In this blog, I’ll show how to improve the rendering speed of the mandelbrot fractal using the GPU

Actually there are more interesting articles in Morten Nobel's Blog

DxProf is realtime DirectX profiling tool for easy identification of performance bottlecks on the GPU. DirectX 9, DirectX 10, and DirectX 11 are supported.

3D-Tech News Around The Web / GameFest 2010 Presentations
« on: June 12, 2010, 08:13:03 AM »
"... GameFest 2010 presentations and audio are being published now, with the full index up on  sometime in the next week."

Here are some direct links to relevant Windows talks

Acropora  is a procedural voxel modeler for creating complex, organic mesh topologies that are useful for all types of 3D modeling applications. Acropora  incorporates some of the latest advances in voxel modeling technology. Features include:


      A variety of base shapes and compound shapes as primary surfaces
      User-defined surfaces
      Splines, lofts, grooves, extrusions, chisels
    * Voxelisation of user imported models
      Over 50+ volume modifiers
      Automatic generation of up to 15 octaves of three-dimensional noise (volumetric, Perlin and fractal)
      Extensive voxel and noise editing tools
      Extensive post-processing of meshes (tesselation, smoothing, simplification,...)
      Batch processing
      Multiple LOD support
      Export to multiple mesh formats (FBX, OBJ, 3DS, DXF, DAE), DDS volume textures, and raw voxel data

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