十年磨一剑

以前看OPENGL的时候就没有彻底搞懂纹理操作到底是怎么实现的.最近看龙书又看到纹理操作了.看来这个问题不解决不行啊.于是研究一番,略有心得,在此记下以备不时之需.先搞清楚,目标像素就是已经存在帧缓冲区里面的像素,而源像素是经过渲染管道处理后的新片断(这个时候片断已经经过纹理处理了). 混合是指这两者之间的操作.而纹理操作只影响最后源像素的颜色值,它操作的主要对象是进行纹理

The  perspective projection maps the view frustum to the cube representing homogeneous clip space.Homogeneous clip space is so named because it is in this space that graphics primitives are clipped

1,下载AntTweakbar,http://sourceforge.net/projects/anttweakbar/files/latest/download?source=dlp2,用VS2010新建控制台工程，这里我们命名为FirstSample_withGLUT，新建main.cpp。3,将antTweakBar/src/TwEventGLUT.c拷贝到main.cpp里面，略有

else if(UiSettings::showMode() == UiSettings::POINT) { glEnable( GL_POINT_SMOOTH ); glPointSize(10.0f); glPolygonMode( GL_FRONT_AND_BACK, GL_POINT ); }

This problem is caused by mismatching between head file and lib file.To tackle it, make sure to update all the glew files including .h .lib .dll files on windows.

TEMPLATE = appCONFIG += console c++11CONFIG -= app_bundleCONFIG -= qtSOURCES += \ main.cppLIBS += -lGLEW -lGLU -lglut -lGL#include <GL/glew.h> // the opengl library wrap...