And finally, under DX10, shadows will be crisper and more precisely match the features of the objects they are cast from. In DX10, for fire and some other effects, we'll be using soft particles which means that the fire particles will no longer 'clip' or be cut off by hard surfaces that they intersect with. Bullets and objects that hit water will produce radial ripples. AIs moving in water will leave behind rippling, foaming trails. Most significantly, DX10 will allow any physical object that comes in contact with a body of water to produce interactive waves that will perturb the surface of the water itself, distorting its refraction and reflection, and blending seamlessly with the simulations already running on the surface. Irrational Games: We are supporting a number of new features for DX10. Will your engine support shader model 4 and will you use advanced features of that shader model like Geometry Shader or Virtual Texture Management? 'PCGH: Windows Vista comes with the new DiectX 10 API. The differences between DX10 and DX9 in Bioshock? Look for a new Shacknews interview with Levine in the coming days. 'With a game like BioShock, it will really make a difference. 'Please don't ruin other people's experience by revealing secrets in unmarked threads, and if you want to enjoy the game to its fullest, stay away from any threads that might ruin the fun for you,' wrote Levine. In a following update on the company's Cult of Rapture website, BioShock creative lead Ken Levine warned users away from potentially spoiler-filled forum posts and implored users not to post spoilers themselves.

The demo will also be available on the new FileShack Quicksilver system for Mercury members with support for download accelerators with multiple connections. The BioShock demo will be of an impressive 1.84GB in girth that you will be able to eagerly gulp down at FileShack. The company was sure to note that new ATI and Nvidia video card drivers will be released the same day, and should be installed for best performance. 2K Games has confirmed that the PC demo of Irrational's 2K Boston and Australia's BioShock will be released for download Monday evening around 7pm EST.

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