小猪爱拱地

1. 平移(translation)点 (x,y)平移到 (x',y'),经过的距离为 (tx, ty). 则x' = x + txy' = y + ty或者P' = P + T其中,2. 旋转（以坐标原点为中心喜转动角度 , 逆时针 大于0,顺时针 小于０假设点(x,y)绕原点逆时针转动 到(x',y'). 那么三角函数展开，最后可以得出：3. 绕任一点()旋转：3.1 平移点()到原点　Ｔ()3.2 旋转R(...

最近EFL（https://www.enlightenment.org/download） 代码使用meson来编译了。编译方法如下：CFLAGS="-O -g -ffast-math -march=native -ggdb3" meson --prefix=$HOME/install -Dopengl=full . buildninja -C buildsudo ninja -...

在测试一个glut小程序的时候，报错：libGL error: unable to load driver: nouveau_dri.solibGL error: driver pointer missinglibGL error: failed to load driver: nouveau重新配置mes代码，编译，之后好了。配置的方法：./configure --with

I’ve written a hello world for wayland. It’s available at:https://github.com/hdante/hello_waylandIntroductionFrom the end user perspective it’s very easy to understand what wayland is: it’s a

代码是下面的：#include #include #include #include #include #include typedef unsigned short WORD;typedef unsigned int DWORD;typedef unsigned long LONG;typedef struct tagBITMAPFILEHEADER{ WORD

In my last post I gave a quick introduction to the Linux graphics stack. There I explained how what we call a graphics driver in Linux is actually a combination of three different drivers:the us

This is an introductory overview post for the Linux Graphics Stack, and how it currently all fits together. I initially wrote it for myself after having conversations with people like Owen Taylor, Ray

在编译 mesa的时候，因为系统提供的drm版本较低，就编了一个新版本的 drm, 安装到了一个非系统目录下。结果， mesa在 configure的时候，找不到这个 drm.报错：configure: error: Direct rendering requires libdrm >= 2.4.38解决方法是：export LIBDRM_ROOT=NEW_LIBDRM_D

Chapter 2. X ConceptsThis chapter introduces the concepts that underlie X programming.You should read this chapter even if you are the type of person wholikes to jump right into the code. (If you

Chapter 3. Basic Window ProgramEvery Xlib program has a similar structure. This chapter shows asimple program that puts up a window and handles events in thatwindow. You can use this simple appl

Chapter 1. IntroductionThis chapter gives the big picture: what X is all about and somefundamentals of how it works. Everyone should look at this chapter,though readers who are already familiar wi

A Brief intro to X11 ProgrammingThis is meant to be a simple overview of X11 programming. It will contain the basics necessary to create a single window X program. All of the information of this w

Benedict R. Gaster (AMD Architect) has published on AMD developers website, an introduction to OpenCL programming.I repoduced the complete source code here without the comment (you have to jump to

This post attempts to be a brief and simple introduction to the Linux graphics stack, and as such, it has an introductory nature. I will focus on giving enough context to understand the role that Mesa

Linux support for graphics cards are very important for desktop and mobile users: they want to run games, composite their applications and have a nice and modern user experience.So it’s usual that