DirectX_11_Technology_Update_US.pptx

DirectX 11 Technology Update Chuck Walbourn Senior Software Design Engineer Microsoft Gamefest 2008 Graphics Track Introduction to the Direct3D 11 Graphics Pipeline Direct3D 11 Tessellation High Level Shader Language (HLSL) Update—Introducing Version 5.0 Multithreaded Rendering for Games Direct3D 11 Compute Shader—More Generality for Advanced Techniques Partners Track Advanced Topics in GPU Tessellation (AMD) Water-Tight, Textured, Displaced Subdivision Surface Tessellation Using Direct3D 11 (NVIDIA) DirectX 11 Overview Direct3D 11 is based on Direct3D 10.1 Similar API design rendering pipeline Enables new DirectX 11 hardware features Supports existing DirectX 10 and 10.1 hardware Enables some new features as well Supports a subset of DirectX 9 SM 2.0+ hardware Supported on Windows 7, Windows Vista, Windows Server 2008, and Windows Server 2008 R2 Input Assembler Vertex Shader Pixel Shader Hull Shader Rasterizer Output Merger Tessellator Domain Shader Geometry Shader Stream Output Features Feature Levels Feature levels are well-defined sets of functionality Not a sea of “opt-in” caps bits Each feature level is a superset of the previous one Concept was introduced with Direct3D 10.1 ID3D10Device1::GetFeatureLevel() D3D10_FEATURE_LEVEL_10_1 D3D10_FEATURE_LEVEL_10_0 DirectX 11 Feature Levels Feature Level Capabilities D3D_FEATURE_LEVEL_10_0 (e.g. NVIDIA GeForce 8000/9000 Series; GTX 260/280) Direct3D 10 hardware: Shader Model 4.0, geometry shader, stream out, alpha-to-coverage, MSAA textures, 2-sided stencil, general render target views, texture arrays, BC4/BC5, optional DirectCompute (CS 4.0), all 9_3 features. D3D_FEATURE_LEVEL_10_1 (e.g. ATI Radeon HD 2000/3000/4000 Series; NVIDIA GeForce G210/GT220) Direct3D 10.1 hardware: Shader Model 4.1, cubemap arrays, extended MSAA, optional DirectCompute (CS 4.1), all 10_0 features. D3D_FEATURE_LEVEL_11_0 (e.g. ATI Radeon HD 5000 Series) Direct3D 11 hardware: Shader Model 5.0, hull domain shaders, mandatory DirectCompute