On 11/3/07, Stephane Denis <email@hidden> wrote:
> > new, capable hardware will support them too. If it doesn't, it's
> > highly likely that programs will refuse to run on the new hardware,
> > which isn't good for the developer (lost time and money) or Apple (bad
> > PR as it's perceived they've shipped *worse* hardware).
>
> It never worked like it:
>
> For example, on Radeon 8500, you could have an extension using NPatch
> (GL_ATI_pn_triangles), but it is no more supported on later graphics cards
> from ATI, so you could have program using this extension that wouldn't
> work on more later hardware ...
>
> Same issue with GL_EXT_palette : You could use 8-bit palette texture on
> Geforce 4. But you can't do it on Geforce 8 for example ...
>
> So it's quite common to see later revision of hardware deprecating
> extensions. There is even some drivers updates that *remove* extensions.
Sure, if the hardware stops supporting the feature, there's nothing
the driver can do. That's not the case here, though. If the feature
is suffiicently poorly supported that nobody can use the feature, then
removing it from the driver (like happened to paletted textuers) is
palatable. That's not the case here though.
> http://download.intel.com/design/mobile/datashts/31627303.pdf
>
> PS: It's a Direct X 9 and OpenGL 1.5 chipset (see official datasheet).
> Don't trust the articles you can see on Wikipedia ...
>
> It's not a Direct X 10 and Shader Model 4.0 (I mean unless it's emulated
> of course, like the Apple Software Renderer).
Oh well, the document confirms FP textures which is the most important
of the DX10 features. As I said, I don't personally care about
geometry shading.
-Keith
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