Intel HD Graphics DirectX Developer's Guide (Sandy Bridge)

More documents

Recommendations

Info

Intel® HD Graphics DirectX* Developer's Guide 2.2 Intel® HD Graphics Specifications Table 5 Intel® HD Graphics Feature Specifications Intel® Graphics Core Intel® HD Graphics Intel® Chipset (see Error! Reference source not found.) Graphics Architecture Intel® microarchitecture code name Sandy Bridge Intel® HD Graphics 2000 Intel® HD Graphics 3000 (includes higher frequency Intel® HD Graphics 3000+ variant) Segment Desktop/Mobile Desktop/Mobile Maximum Video Memory DirectX* Support *Depends on system memory and operating system. Microsoft Windows Vista*/Microsoft Windows* 7: refer to the table below: 1GB 2GB >2GB 256 MB 783 MB 1692 MB 10.1, DirectX* 11 on DirectX* 10 hardware, Compute Shader 4.x, DirectX* 11 API multi-threaded rendering on DirectX* 10 hardware (asynchronous object creation supported, software support for asynchronous display list in the runtime) OpenGL* Support 3.0 Shader Model Support 4.1 14 Document Number: 321371-002US
Quick Tips: Graphics Performance Tuning 3 Quick Tips: Graphics Performance Tuning 3.1 Primitive Processing 3.1.1 Tips On Vertex/Primitive Processing 1. Consider using the call ID3DX10Mesh::OptimizeMesh for faster drawing as the reordering can optimize cache usage. 2. Use IDirect3DDevice9::DrawIndexedPrimitive (DirectX* 9) or ID3D10Device::DrawIndexed (DirectX* 10) to maximize reuse of the vertex cache. a. The vertex cache size will increase over time and can be discovered using D3DQUERYTYPE_VCACHE. 3. Ensure adequate batching of primitives to amortize runtime and driver overhead. a. Maximize batch sizes: 200* to 1000 are recommended and within this range, bigger is better. *Minimum batch size applies to meshes that don‟t cover many pixels. For example, a two triangle full screen quad in a postprocessing pass will not bottleneck the driver. b. Minimize render state changes between batches to reduce the number of pipeline flushes. c. Use instancing to enable better vertex throughput especially for small batch sizes. This also minimizes state changes and Draw calls. 4. Use static vertex buffers where possible. 5. Use visibility tests to reject objects that fall outside the view frustum to reduce the impact of objects that are not visible. a. Set D3DRS_CLIPPING to FALSE for objects that do not need clipping. 6. Take advantage of Early-Z rejection. a. Render with a Z-only pass (meaning no color buffer writes or pixel shader execution) followed by a normal render pass. This uses the higher performance of Early-Z to reject occluded fragments which reduces compute times and raster operations. This is particularly recommended where this can replace or eliminate texkill instructions - the latter are lot more expensive. How to maximize graphics performance on Intel® Integrated Graphics 15
Page 1 and 2: Intel® HD Graphics DirectX* Develo
Page 3 and 4: About this Document to the terms of
Page 5 and 6: About this Document 9. APPLICABLE L
Page 7 and 8: About this Document 3.10.6 Avoid wr
Page 9 and 10: About this Document 1. Intel® HD G
Page 11 and 12: About Intel® HD Graphics Table 3 E
Page 13: About Intel® HD Graphics Texture a
Page 17 and 18: Quick Tips: Graphics Performance Tu
Page 35 and 36: Performance Analysis on Intel Proce
Page 37 and 38: Performance Analysis on Intel Proce
Page 39 and 40: Appendix: Introducing Intel® Graph
Page 45 and 46: Appendix: Enhancing Graphics Perfor
Page 65 and 66:
Appendix: Enhancing Graphics Perfor
Page 67 and 68:
References 4 References [1] “Copy
show all

Intel HD Graphics DirectX Developer's Guide (Sandy Bridge)

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?