That's right kids, the expansion to Half-Life 2 will support HDR. Also (don't you love curveballs), the Source version of Day of Defeat will also support HDR.
Take from Planet Half-Life.
"We're getting much closer to having Lost Coast ready to release. Originally planned as a section of the Highway 17 chapter of Half-Life 2, Lost Coast is a playable technology showcase that introduces High Dynamic Range lighting to the Source engine.
Once Lost Coast is released, we will include HDR in our future product releases. For instance, Day of Defeat: Source will feature HDR lighting for all of its levels the day it is released.
One of the fundamental pieces of HDR rendering lies in "dynamic tonemapping." In the Source engine, by varying the exposure of a scene based on how much light is visible, we can accurately simulate a range of brightness that is beyond what a computer monitor is physically capable of displaying. A real-world example of this effect happens every time you walk from a very dark room to an outdoor area with very bright sunlight -- your eye takes a few moments to adjust to the variance in the amount of light hitting the retina. If you have a video card that supports HDR, you'll be able to see this in the engine when Lost Coast is released."
There's also a video in the news post that showcases this feature.
Take from Planet Half-Life.
"We're getting much closer to having Lost Coast ready to release. Originally planned as a section of the Highway 17 chapter of Half-Life 2, Lost Coast is a playable technology showcase that introduces High Dynamic Range lighting to the Source engine.
Once Lost Coast is released, we will include HDR in our future product releases. For instance, Day of Defeat: Source will feature HDR lighting for all of its levels the day it is released.
One of the fundamental pieces of HDR rendering lies in "dynamic tonemapping." In the Source engine, by varying the exposure of a scene based on how much light is visible, we can accurately simulate a range of brightness that is beyond what a computer monitor is physically capable of displaying. A real-world example of this effect happens every time you walk from a very dark room to an outdoor area with very bright sunlight -- your eye takes a few moments to adjust to the variance in the amount of light hitting the retina. If you have a video card that supports HDR, you'll be able to see this in the engine when Lost Coast is released."
There's also a video in the news post that showcases this feature.