Is the Wii capable of HDR?
- Thread starter Oblivion
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Simple version is you need to be able to represent numbers greater than 1 in the framebuffer, and then map the range of values back into screen colors using some filter.
On GC, you could praobably do something where you use destination alpha to indicate the overbrightness of a pixel and resolve it in a post pass. It wouldn't be trivial and there would edge cases to resolve but it's likely doable.
In a number of cases HDR can be simulated effectively using 'overbright' textures and exposure scaling. GT3 had some very nice lighting that would not have benefited from being HDR. Considering photography is all about trying to map the HDR real world onto a limited dynamic range media, HDR in games that simulate a camera viewing the world doesn't mean a great deal. Mostly it means areas of overexposure (whiteouts) that any competant photographer would be avoiding (how often do you get whiteouts in movies?). I think HDR's key benefit is simplifying lighting models so you don't need to resort to tricks. But creating that 'HDR look' isn't dependent on HDR data.
HDR is not Bloom. Bloom is but one effect that makes up what wii call "HDR rendering".
When you see too much bloom in a game, it's not because "there is too much HDR". That's one of those comments that really drives me insane. It's like saying "there is too much bitrate in this MPEG!". Silly.
The bloom effect is what is overused sometimes (most times!) but that is just one of the several effects, and is usually overused because it sort of created a "wow effect" for about 3 minutes in 2001, and some people still aren't over it.
ICO on PS2 had some really pretty Bloom effects that really added to the atmosphere, but the game wasn't rendering in HDR. Today we get all sorts of abuse of certain effects and Bloom really seems to be still in its 5 minutes of glory... Heck, look at Liar!! It's disgusting how overused bloom is on that title.
When you see too much bloom in a game, it's not because "there is too much HDR". That's one of those comments that really drives me insane. It's like saying "there is too much bitrate in this MPEG!". Silly.
The bloom effect is what is overused sometimes (most times!) but that is just one of the several effects, and is usually overused because it sort of created a "wow effect" for about 3 minutes in 2001, and some people still aren't over it.
ICO on PS2 had some really pretty Bloom effects that really added to the atmosphere, but the game wasn't rendering in HDR. Today we get all sorts of abuse of certain effects and Bloom really seems to be still in its 5 minutes of glory... Heck, look at Liar!! It's disgusting how overused bloom is on that title.
Would it be possible to use a different color space and convert it later, which, if I understand correctly, is what the "NAO32" HDR used in Heavenly Sword is about, which uses less bandwidth than other implementations of HDR ? I realize such a method requires quite a lot of computational power, and may not be workable on Hollywood in most situations, but in theory it may be feasible ?
every GPU out there can do 'HDR'. it's all a matter of what logical ranges come on the input of your pixel pipeline and how 'normalisation' treats those at the end. HDR per se has little to do with the physical scalars the pipeline/buffers handle - that only affects your HDR's precision.
other than that, i ditto what Shifty said.
other than that, i ditto what Shifty said.
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Which PS2 games look like they have bump-mapping??
Splinter Cell: Chaos Theory looks almost like it has specular bump-mapping by putting some kind of mask over a gloss map or something along those lines. It's a very nice-looking effect.
There are too many to count. The effect is very simple: they pre-bake a bump mapped surface and that becomes the texture on the PS2 game.
The only hint that it's not actually bump mapped is that the lighting doesn't change by moving the lights.
I think the first example i can recall was Baldurs Gate: Dark Alliance. This also used geometry for some of the "bumps" though...
The Wii should be quite capable of displaying HDR seeing as the current gen consoles did it. I'm just not sure at what bit it was...
haha! I remember lens flare...
especially on that ps1 game vigilante 8...
haha! I remember lens flare...
especially on that ps1 game vigilante 8...
cloudscapes
Regular
I can't think of any current gen (ps2, xbox, gc) consoles doing hdr :/
then again I'm not a console player. I'm curious, what are some examples?
then again I'm not a console player. I'm curious, what are some examples?
