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Topics - JeGX

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81
The shadertoy demo "Tribute to Marc Antoine Mathieu" converted to GeeXLab.

Link: http://www.geeks3d.com/hacklab/20171130/shadertoy-2-geexlab-tribute-to-marc-antoine-mathieu/


82
GeeXLab - english forum / Simple countdown timer demo
« on: December 01, 2017, 04:53:37 PM »
A simple countdown timer made with GeeXLab.

Link: http://www.geeks3d.com/hacklab/20171129/simple-countdown-timer-demo/



83
GeeXLab - english forum / ASUS Aura Illumination Demo (Motherboard and GPU)
« on: December 01, 2017, 04:51:22 PM »
This demo shows how to use ASUS Aura Illumination functions to control the RGB lighting of your ASUS motherboard or graphics card.

Link: http://www.geeks3d.com/hacklab/20171111/asus-aura-illumination-demo-motherboard-and-gpu/



84
Quote
OSPRay is an open source, scalable, and portable ray tracing engine for high-performance, high-fidelity visualization on Intel® Architecture CPUs. OSPRay is released under the permissive Apache 2.0 license.

The purpose of OSPRay is to provide an open, powerful, and easy-to-use rendering library that allows one to easily build applications that use ray tracing based rendering for interactive applications (including both surface- and volume-based visualizations). OSPRay is completely CPU-based, and runs on anything from laptops, to workstations, to compute nodes in HPC systems.

OSPRay internally builds on top of Embree and ISPC (Intel® SPMD Program Compiler), and fully utilizes modern instruction sets like Intel® SSE4, AVX, AVX2, and AVX-512 to achieve high rendering performance, thus a CPU with support for at least SSE4.1 is required to run OSPRay.

Links:
- http://www.ospray.org
- https://github.com/ospray/ospray



85
3D-Tech News Around The Web / Writing a Simple Linux Kernel Module
« on: December 01, 2017, 12:19:56 PM »
Quote
Linux provides a powerful and expansive API for applications, but sometimes that’s not enough. Interacting with a piece of hardware or conducting operations that require accessed to privileged information in the system require a kernel module.

A Linux kernel module is a piece of compiled binary code that is inserted directly into the Linux kernel, running at ring 0, the lowest and least protected ring of execution in the x86–64 processor. Code here runs completely unchecked but operates at incredible speed and has access to everything in the system.

...


Before we get started, we need to make sure we have the correct tools for the job. Most importantly, you’ll need a Linux machine. I know that comes as a complete surprise! While any Linux distribution will do, I am using Ubuntu 16.04 LTS in this example, so if you’re using a different distribution you may need to slightly adjust your installation commands.

Secondly, you’ll need either a separate physical machine or a virtual machine. I prefer to do my work in a virtual machine, but this is entirely up to you. I don’t suggest using your primary machine because data loss can occur when you make a mistake. I say when, not if, because you undoubtedly will lock up your machine at least a few times during the process. Your latest code changes may still be in the write buffer when the kernel panics, so it’s possible that your source files can become corrupted. Testing in a virtual machine eliminates this risk.

And finally, you’ll need to know at least some C. The C++ runtime is far too large for the kernel, so writing bare metal C is essential. For interaction with hardware, knowing some assembly might be helpful.

Link: https://blog.sourcerer.io/writing-a-simple-linux-kernel-module-d9dc3762c234

86
Compressonator is a set of tools to allow artists and developers to more easily work with compressed assets and easily visualize the quality impact of various compression technologies.  It consists of a GUI application, a command line application and an SDK for easy integration into a developer toolchain.

Quote
We are excited to announce the release of Compressonator V2.7! This version contains several new features and optimizations, including:

Cross Platform Support

Due to popular demand, Linux builds of the Compressonator SDK libs and command line application are now available in the release package. You could also build for MacOS on your own.

glTF 3D Model View and Compression

The Compressonator GUI application now supports loading of glTF v2.0 3D models and rendering through DirectX12 API. The 2D texture assets within the glTF model can be compressed and analyzed by Compressonator.

Links:
- https://gpuopen.com/gaming-product/compressonator/
- https://gpuopen.com/compressonator-v2-7-release-adds-cross-platform-support-3d-model-compression-gltf-v2-0/



87
The successor of the Crimson graphics driver: Adrenalin

https://www.youtube.com/watch?v=WozmsD7oKrM




88
Shadertweak is an iPad app that allows you to rapidly prototype fragment shaders in the Metal shading language.

Link: https://github.com/warrenm/Shadertweak



89
Quote
The desktop gain is attributed to gaming and cryptocurrency. That helped AMD and Nvidia gain market share.

This is the latest report from Jon Peddie Research on the GPUs used in PCs. It is reporting on the results of Q3'17 GPU shipments world-wide.

Quick highlights:

- AMD’s overall unit shipments increased 7.63% quarter-to-quarter, Intel’s total shipments increased 5.01% from last quarter, and Nvidia’s increased 29.53%.
- The attach rate of GPUs (includes integrated and discrete GPUs) to PCs for the quarter was 144% which was down -1.28% from last quarter.
- Discrete GPUs were in 39.55% of PCs, which is up 4.18%.
- The overall PC market increase 10.31% quarter-to-quarter, and decrease -2.06% year-to-year.
- Desktop graphics add-in boards (AIBs) that use discrete GPUs increased 29.05% from last quarter.
- Q3'17 saw an increase in tablet shipments from last quarter.

Link: https://www.jonpeddie.com/press-releases/overall-gpu-shipments-increased-9.3-from-last-quarter-amd-increased-8-nvidi



90
3D-Tech News Around The Web / Demystifying Floating Point Precision
« on: November 23, 2017, 12:02:09 PM »
Quote
Floating point numbers have limited precision. If you are a game programmer, you have likely encountered bugs where things start breaking after too much time has elapsed, or after something has moved too far from the origin.

This post aims to show you how to answer the questions:

- What precision do I have at a number?
- When will I hit precision issues?

Link: https://blog.demofox.org/2017/11/21/floating-point-precision/

91
Dependencies is a rewrite of the old legacy software Dependencies Walker in C# for Windows devs to troubleshoot dll load dependencies issues.

Quote
Dependencies is a rewrite of the legacy software Dependency Walker which was shipped along Windows SDKs, but whose developement stopped around 2006. Dependencies can help Windows developers troubleshooting their dll load dependencies issues.

Links:
- Download Dependencies v1.5
- https://github.com/lucasg/Dependencies
- https://lucasg.github.io/Dependencies/




92
cr.h is a single file header-only live reload solution for C, written in C++:

- simple public API, 3 functions only to use (and only one to export);
- works and tested on Linux and Windows;
- automatic crash protection;
- automatic static state transfer;
- based on dynamic reloadable binary (.so/.dll);
- MIT licensed;
- requires C++17 (filesystem support);

Links:
- https://github.com/fungos/cr
- https://fungos.github.io/blog/2017/11/20/cr.h-a-simple-c-hot-reload-header-only-library/

93
Quote
When Microsoft announced its refreshed Surface Book 2 last week, it was quite clear about how it wanted to position the product. “This is a desktop,” Panos Panay, Microsoft’s corporate VP of devices, declared. “For many, this is likely the most performant desktop they have ever seen.” Apparently Panay was working with a different definition of “performant” than the rest of us, however, because the Surface Book 2’s true stand-out feature this time around isn’t the hinge, upgraded GPU, or its generally high performance: It’s that Microsoft’s latest and greatest literally can’t game on AC power without draining the battery.

...

The drain on the battery isn’t enormous, but after a 105-minute testing loop of Furmark and Prime95, battery charge had dropped 15 percent. (For the record, Furmark probably wasn’t the best app to use for testing, because Nvidia and AMD both detect it and cut GPU clocks and power automatically to avoid being damaged by what both companies view as a thermal virus.) Other reviews have reported issues with other tests, so it’s not limited to just this combination.

Link: https://www.extremetech.com/computing/259359-microsofts-surface-book-drains-battery-gaming-even-plugged



94
GeeXLab - english forum / GeeXLab 0.19.x.x released
« on: November 23, 2017, 11:19:03 AM »
GeeXLab 0.19.0.0 has been released for all platforms: Windows, macOS, Linux and Raspberry Pi.

Release notes:
http://www.geeks3d.com/hacklab/20171123/geexlab-0-19-0-0-released-for-windows-linux-macos-and-raspberry-pi/

Downloads:
http://www.geeks3d.com/geexlab/downloads/

Version history:
http://www.geeks3d.com/geexlab/changelog/


95
The Intel Management Engine is a co-processor integrated in all post-2006 Intel-CPU-based PCs. This co-processor runs a customized version of MINIX at ring -3. That means the Intel Management Engine has full access to network, memory and to the whole computer!

Links:

- MINIX — The most popular OS in the world, thanks to Intel

- Intel Management Engine runs on MINIX 3 OS

- Disabling the Intel Management Engine with a Raspberry Pi 3

- Neutralizing Intel’s Management Engine

- Intel's Management Engine is a security hazard, and users need a way to disable it

- Intel ME: The Way of Static Analysis

- Intel Active Management Technology

96
Geeks3D's GPU Tools / GPU Caps Viewer 1.37.0 released
« on: October 31, 2017, 01:35:11 PM »
GPU Caps Viewer 1.3.7.0.0 is available.

Release highlights and downloads:
http://www.geeks3d.com/20171031/gpu-caps-viewer-1-37-0-released/


97
Quote
Smartphones are ubiquitous, but smartphone habits are as diverse as the people using them. I like to buy a flagship device, such as an iPhone X or Pixel 2, and use it for four or five years. Others buy into upgrade plans with their carrier that lets them change out their phone every year. But lots of people still buy a phone, keep it for a year or two, and then buy a new one; their old phone ends up in a closet, shoebox, or nightstand.

Many people save these old phones in case of emergency, but the vast majority of them never get used again, and eventually become worthless. The phone-in-the-closet phenomenon has become a hidden store of e-waste; a two-year-old phone still has value and is still a powerful device. And so it's great news that Samsung is starting a new "Upcycling" initiative that is designed to turn old smartphones and turn them into something brand new.

Behold, for example, this bitcoin mining rig, made out of 40 old Galaxy S5 devices, which runs on a new operating system Samsung has developed for its upcycling initiative.

Link:
https://motherboard.vice.com/amp/en_us/article/3kvdv9/samsung-upcycling-galaxy-s5-bitcoin-mining-rig



98
3D-Tech News Around The Web / How Unreal Engine Renders a Frame
« on: October 28, 2017, 08:52:27 AM »
Quote
I was looking around the Unreal source the other day and inspired by some excellent breakdowns of how popular games render a frame, I thought to try something similar with it as well, to study how it renders a frame (with the default settings/scene setup).

Since we have access to the source code, it is possible to study the renderer source to see what it does, although it is quite a beast and rendering paths depend a lot on the context so a clean, low-level API call list will be easier to follow (looking into the code to fill in any missing gaps).

I put together a simple scene with a few static and dynamic props, a few lights, volumetric fog, transparent objects and a particle effect to cover a large enough range of materials and rendering methods.

Links
- part 1: https://interplayoflight.wordpress.com/2017/10/25/how-unreal-renders-a-frame/
- part 2: https://interplayoflight.wordpress.com/2017/10/25/how-unreal-renders-a-frame-part-2/
- part 3: https://interplayoflight.wordpress.com/2017/10/25/how-unreal-renders-a-frame-part-3/

99
Quote
Julia is a high-level programming language for mathematical computing that is as easy to use as Python, but as fast as C. The language has been created with performance in mind, and combines careful language design with a sophisticated LLVM-based compiler [Bezanson et al. 2017].

Julia is already well regarded for programming multicore CPUs and large parallel computing systems, but recent developments make the language suited for GPU computing as well. The performance possibilities of GPUs can be democratized by providing more high-level tools that are easy to use by a large community of applied mathematicians and machine learning programmers. In this blog post, I will focus on native GPU programming with a Julia package that enhances the Julia compiler with native PTX code generation capabilities: CUDAnative.jl.

Link:
https://devblogs.nvidia.com/parallelforall/gpu-computing-julia-programming-language/

100
GeeXLab - english forum / Simple CPU meter demo for Windows
« on: October 25, 2017, 10:26:21 AM »

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