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The blog of a senior software engineer working as a technical expert on various projects for mobile/embedded platforms (Windows Mobile, SymbianOS, BREW, iPhone, Android,...)

Floating-point optimisation for small devices, part 1

Ok, I will begin today a new serie of articles dealing with one specific field of optimisation: floating point calculus. I am working as a ...

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A Fast and Hardware-Friendly Surface Tessellation Method

Here is some tessellation code I've written in 2002. At that time, I didn't find any useful resource so I had to probably reinvent ...
Arc and distance between two points on Earth surface

The following C++ snippet computes the arc (in radians) and the distance (in meters) between two positions on Earth using the law of haversi...
Using a sqlite backend for syslogd

I wanted to make my server's system logs a bit more structured, in order to mine their data from python scripts, so I switched to a SQL ...
Fast sine/cosine for ARMv7+NEON

I also posted this on StackOverflow so people could test it on real hardware. Here is a function I wrote to compute sines and cosines real...
TrueVision3D SDK 6.5 project wizard for Visual C# 2005

If you're using the wonderful TrueVision3D 3D programming framework with Visual C# 2005 (express or not), you can try the beta of TrueV...
Frustum culling: Sphere-Cone test with no squareroot

I crossposted this article at GameDev . I've found a method for checking if a sphere is partially or totally included inside a cone wit...
40MTri/s for my last Catmull-Rom code

Today I switched from an old OpenGL 1.1 arrays model to the ARB_vertex_buffer_object extension, giving a 50% performance boost to my renderi...
libNvTriStrip for Linux

libNvTriStrip is a C library shipped by NVidia that turns any geometry into hardware-friendly triangle strips. I have ported it to Linux and...
Showcase of some work I did for WinMo6 using .Net + GapiDraw

Parts of a prototype I developed in Dec'08-Jan'09. The target was the HTC Diamond (Windows Mobile 6). The main requirement was ...
Preserving aspect ratio, the pure CSS way...

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A Fast and Hardware-Friendly Surface Tessellation Method

Here is some tessellation code I've written in 2002. At that time, I didn't find any useful resource so I had to probably reinvent ...
Arc and distance between two points on Earth surface

The following C++ snippet computes the arc (in radians) and the distance (in meters) between two positions on Earth using the law of haversi...
Using a sqlite backend for syslogd

I wanted to make my server's system logs a bit more structured, in order to mine their data from python scripts, so I switched to a SQL ...
Fast sine/cosine for ARMv7+NEON

I also posted this on StackOverflow so people could test it on real hardware. Here is a function I wrote to compute sines and cosines real...
TrueVision3D SDK 6.5 project wizard for Visual C# 2005

If you're using the wonderful TrueVision3D 3D programming framework with Visual C# 2005 (express or not), you can try the beta of TrueV...
Frustum culling: Sphere-Cone test with no squareroot

I crossposted this article at GameDev . I've found a method for checking if a sphere is partially or totally included inside a cone wit...
40MTri/s for my last Catmull-Rom code

Today I switched from an old OpenGL 1.1 arrays model to the ARB_vertex_buffer_object extension, giving a 50% performance boost to my renderi...
libNvTriStrip for Linux

libNvTriStrip is a C library shipped by NVidia that turns any geometry into hardware-friendly triangle strips. I have ported it to Linux and...
Showcase of some work I did for WinMo6 using .Net + GapiDraw

Parts of a prototype I developed in Dec'08-Jan'09. The target was the HTC Diamond (Windows Mobile 6). The main requirement was ...
Preserving aspect ratio, the pure CSS way...

When dealing with elastic layouts , web designers have to face the harsh reality of CSS styling: there is no way to enforce an aspect ratio ...

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