opengl白色视窗-Visual Studio 2010 [英] opengl white window - Visual Studio 2010

问题描述

我是opengl初学者. 我设置了DLL，库，标题，但是发生了错误. 我的开发环境是win7(64bit).

I am opengl beginner. I set the DLLs, Library, Header but, error occurred. My development environment is win7 ( 64bit ).

供参考- DLL:C:\ Windows \ System32，C:\ Windows \ SysWOW64//glu32.dll，glut.dll，glut32.dll，opengl32.dll

For reference - DLLs : C:\Windows\System32, C:\Windows\SysWOW64 // glu32.dll, glut.dll, glut32.dll, opengl32.dll

库:C:\ Program Files(x86)\ Microsoft SDKs \ Windows \ v7.0A \ Lib，C:\ Program Files(x86)\ Microsoft Visual Studio 10.0 \ VC \ lib//glut.lib，glut32.库

Libs : C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Lib, C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib // glut.lib, glut32.lib

标题:C:\ Program Files(x86)\ Microsoft SDKs \ Windows \ v7.0A \ Include \ gl，C:\ Program Files(x86)\ Microsoft Visual Studio 10.0 \ VC \ include \ gl//GL. H，GLAUX.H，GLU.H，glut.h

Header : C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Include\gl, C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\gl // GL.H, GLAUX.H, GLU.H, glut.h

#include <Windows.h>
#include <gl/glut.H>

void DoDisplay ( void )
{
    glClearColor ( 0.0f, 0.0f, 1.0f, 1.0f );
    glClear( GL_COLOR_BUFFER_BIT );

    glBegin ( GL_TRIANGLES );

    glVertex2f ( 0.0, 0.5 );
    glVertex2f ( -0.5, -0.5 );
    glVertex2f ( 0.5, -0.5 );

    glEnd ();
    glFlush ();
}

int main ( int argc, char ** argv )
{
    glutInit ( &argc, argv );
    glutInitDisplayMode ( GLUT_RGB | GLUT_DOUBLE );
    glutInitWindowSize ( 300, 300 );
    glutInitWindowPosition ( 0, 0 );
    glutCreateWindow ( "OpenGL" );
    glutDisplayFunc ( DoDisplay );
    glutMainLoop ();

    return 0;
}

白色窗口: http://i.stack.imgur.com/9GJoN.jpg

此代码只是输出白色三角形.

This code is simply output the white triangle.

Win32项目->控制台项目.

Win32 Project -> Console Project.

问题没有解决..对不起.

Problem not solved.. sorry.

错误为 http://i.stack.imgur.com/9GJoN.jpg

推荐答案

• 您正在使用即时模式.您有一个glEnd()，但没有glBegin()
• 正如PeterT所指出的，您没有呼叫glutInit
• 如果按照打印方式指定路径，则会遇到问题.您同时使用正斜杠和反斜杠，至少以我的经验，这会毁了这条路.
• 您不会将屏幕清除为特定颜色，也不会将顶点设置为特定颜色.这可能是在暴风雪中绘制北极熊的情况.
• You're using immediate mode. You have a glEnd() but no glBegin()
• As PeterT also pointed out, you have no call to glutInit
• If your paths are specified like the way you have printed, you'll run into a problem. You have both forward and backslashes, which at least in my experience ruins the path.
• You're not clearing the screen to a specific color, nor are you setting your vertices to a specific color. This may be the case of drawing a polar bear in a snow storm.

退房

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

和

glClearColor(r, g, b, a);

• 正如Drew McGowen所指出的，您未指定任何变换或投影矩阵.
• 我会强烈建议在OpenGL上寻找教程，以很好地说明绘制三角形和为什么所需做的所有事情. Lighthouse3d，Swiftless，OGLDev-有很多应该向您展示的基础知识.
• 还有一点:您正在尝试学习已被弃用约7年的代码.您应该学习新的可编程管线而不是固定功能管线，因为它更快并且可以为您提供更多控制.
• As Drew McGowen pointed out, you're not specifying any transformation or projection matrices.
• I would strongly recommend looking for a tutorial on OpenGL to get a good explanation of all the things you need to do to draw a triangle and why. Lighthouse3d, Swiftless, OGLDev - there are many that should show you the basics.
• One more point: You're trying to learn code that has been deprecated for ~7 years. You should learn the new programmable pipeline instead of the fixed function pipeline because it is faster and gives you more control.

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