EXA, UXA, DRI, GEM, TTMNow that DRI2 was removed from the Xorg7.4 release, there is a lot of whining around why it was not released as is so that we have at least something working.The first thing

GEM v. TTMBy Jonathan CorbetMay 28, 2008 Getting high-performance, three-dimensional graphics working under Linux is quite a challenge even when the fundamental hardware programming information

Contents: 1. GEM Overview 2. API overview and conventions 3. Object Creation/Destruction 4. Reading/writing contents 5. Mapping objects to userspace 6. Memory Domains 7. Execution (Intel specific) 8.

--------------------------drm/libdrm/xf86drm.c-------------------int drmIoctl(int fd, unsigned long request, void *arg)-> ioctl(fd, request, arg);其中request定义于drm.h, 只是一个unsigned long, 代表了一个ioctl请求号#de

AGP-GARTAGP的工作方式    AGP有两种工作方式：一个是DMA（直接存储器存取），一个是DIME（直接内存执行）。AGP技术中的DMA是利用高速的AGP来提高数据传输率，不使用PC机的内存作为显存的扩展，全部的图形运算还是在显存内部完成，这实际上不是真正意义上的AGP。如图：texture Data :  disk à main mem (cpu may process textu

graphics Device OverviewGMCH(Graphics Memory Controller Hub)Intel gfx device集成在GMCH(Graphics Memory Controller Hub), 也就是北桥。 Graphics Processing Unit (GPU)The Graphics Processing Unit is co

 The Direct Rendering Manager: Kernel Support for the Direct Rendering Infrastructure Rickard E. Faith Precision Insight, Inc. $Date: 1999/05/11 22:45:24 $, $Revision: 1.4 $ This paper conta

Introduction to the Direct Rendering InfrastructureBrian Paul (brian@tungstengraphics.com) 10 August 2000 This document is an introduction and high-level user guide for the Direct Rendering In