Thursday, June 3rd, 2010
Category: Examples
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>p
>We have
posted about ray tracing before, and now we have another
example by Jonas Wagner:
The environment is mapped using cube mapping. I store all the values of the cubemap as floats. I increase the definition range by multiplying all values bigger than 0.95 with 2. This makes sure that the bright parts of the image are also very bright in the reflections. You can think of this as faking hdr. I do not calculate any lighting, it is all coming from the environment map. To make the animation look a bit more fluid and hide the aliasing I apply some fake motion blur by blending the current frame with the previous one.
You can check out the code to see how it all works. What frame rates are you getting?
- White Paper: S3TC compression technology
Various types of texture compression techniques have been employed over the years to increase performance. Now, a new...
- texture mapping
Texture mapping is a graphic design process in which a two-dimensional (2-D) surface, called a texture map, is "wrapped around" a three-dimensional...
- texture element
In computer graphics, a texel (texture element) represents the smallest graphical element in two-dimensional (2-D) texture mapping to "wallpaper" the...
- texel (texture element)
In computer graphics, a texel (texture element) represents the smallest graphical element in two-dimensional (2-D) texture mapping to "wallpaper" the...
- texel
In computer graphics, a texel (texture element) represents the smallest graphical element in two-dimensional (2-D) texture mapping to "wallpaper" the...
It’s actually real raytracing not just texture mapping. You can tell from the ;)
This is very cool but definitely far from seeing actual real-world use. I was getting 11-12 fps in Chrome on medium setting (though it’s Pentium4 machine with 2GB of RAM and WinXP, so it’s probably better on something beefier).
Do people understand what ^H means nowadays?
16fps in Opera on medium setting, 5 on high