HardOCP: D3 is DX9?

[brettw]

Some may have seen the performance summary on www.hardocp.com.

They referred to heat haze(a wavy effect coming off hot items in Doom3) that "only works on DX9 compliant cards".

Is doom 3 not Open GL? Should that not say card that support OpenGL 1.4 or similar.

Clarification anyone.:beer:

 

[gururu]

the game demands directx 9.0b, so it must call for some direct 9.0 usage.

 

[Zim Hosein]

Originally posted by: gururu
the game demands directx 9.0b, so it must call for some direct 9.0 usage.

Correct, from Gamespot.com for Doom 3 you see this:

Required

Operating System: Microsoft Windows 2000/XP
Processor: Pentium IV 1.5 GHz or AM Athlon 1.7 GHz processor or higher
RAM: 384MB RAM
CD-ROM: 8x Speed CD-ROM drive (1200KB/sec sustained transfer rate) and latest drivers
Hard Drive: 1.7GB of uncompressed free hard disk space (plus 400MB for Windows swap file)
Processor: 100% DirectXR 9.0b compatible 16-bit sound card and latest drivers
Video Card: 3D hardware Accelerator Card Required - 100% DirectXR 9.0b compatible 64MB Hardware Accelerated video card and the latest drivers.

 

[biostud]

Isn't DirectX and OpenGL just different ways to acces the hardware? So that you can actually get the same effects through openGL or DX, it's just done differently.

 

[SickBeast]

Originally posted by: biostud666
Isn't DirectX and OpenGL just different ways to acces the hardware? So that you can actually get the same effects through openGL or DX, it's just done differently.

Yep, exactly. OpenGL is open-sourced though and effects and features can be added at will through extensions. DirectX requires a new version to support new features.

 

[Schadenfroh]

directX is allot more than just graphics, your thinking of Direct3D, which is not Doom3. Its an openGL game but it uses directX components (maybe that are not video related, possibly network, sound, etc.)

 

[BFG10K]

Again the ARB2 path (which only DirectX 9 compliant cards can run) has features and IQ that the other paths don't have.

 

[Jeff7181]

Originally posted by: SickBeast

Originally posted by: biostud666
Isn't DirectX and OpenGL just different ways to acces the hardware? So that you can actually get the same effects through openGL or DX, it's just done differently.

Yep, exactly. OpenGL is open-sourced though and effects and features can be added at will through extensions. DirectX requires a new version to support new features.

More specifically... DirectX requires that Microsoft creates a new version, otherwise it doesn't get updated.