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Air Raid
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ATI Confirms Next Generation "Leverages XBOX 360 Design"
22-Feb-2006, 21:54.59 Reporter : Dave Baumann
At a recent analyst session ATI's Senior VP of PC Business, Rick
Bergman, has confirmed that their next generation of PC graphics
products will feature much of the technology developed for "Xenos",
ATI's XBOX 360 graphics chip. We've surmised that this is likely be
the case previously, given that Xenos utilises a unified shader
architecture at the hardware level, with both Pixel Shaders and Vertex
shaders utilising the same ALU resources it becomes a ripe time to
implement it with DirectX10 unifying the vertex and pixel shader
programming capabilities in the API.
Vertex and pixel processing have previously always been separate
hardware functions, though vertex processing moved from a software
based solution to hardware with the introduction of NVIDIA's GeForce
256 and has subsequently got closer to the pixel processing capability
with each revision of DirectX Shader Model, to the point where
DirextX10 will should dictate the same programming capabilities across
both. Even with this being the case there is nothing to suggest that
the hardware has to be unified for processing as pixel operations
generally have to hide greater latencies than vertex operations thanks
to the greater use of texturing in the pipeline. However, Xenos's
design has attempted to remove the texture latency issues from shader
programmes by creating a highly threaded design that separates texture
instructions from ALU instructions, allowing multiple shader batches to
run concurrently, and so it comes as no surprise that ATI should adopt
this architecture for the PC, seeing as the investment has already been
made.
......................................................................................................................................
http://beyond3d.com/#news28611
ATI Confirms Next Generation "Leverages XBOX 360 Design"
22-Feb-2006, 21:54.59 Reporter : Dave Baumann
At a recent analyst session ATI's Senior VP of PC Business, Rick
Bergman, has confirmed that their next generation of PC graphics
products will feature much of the technology developed for "Xenos",
ATI's XBOX 360 graphics chip. We've surmised that this is likely be
the case previously, given that Xenos utilises a unified shader
architecture at the hardware level, with both Pixel Shaders and Vertex
shaders utilising the same ALU resources it becomes a ripe time to
implement it with DirectX10 unifying the vertex and pixel shader
programming capabilities in the API.
Vertex and pixel processing have previously always been separate
hardware functions, though vertex processing moved from a software
based solution to hardware with the introduction of NVIDIA's GeForce
256 and has subsequently got closer to the pixel processing capability
with each revision of DirectX Shader Model, to the point where
DirextX10 will should dictate the same programming capabilities across
both. Even with this being the case there is nothing to suggest that
the hardware has to be unified for processing as pixel operations
generally have to hide greater latencies than vertex operations thanks
to the greater use of texturing in the pipeline. However, Xenos's
design has attempted to remove the texture latency issues from shader
programmes by creating a highly threaded design that separates texture
instructions from ALU instructions, allowing multiple shader batches to
run concurrently, and so it comes as no surprise that ATI should adopt
this architecture for the PC, seeing as the investment has already been
made.
......................................................................................................................................
http://beyond3d.com/#news28611