Question

我正在尝试从this site运行GLSL程序，并收到如下错误。除了opengl，我需要安装哪些基本库？我在Windows机器上需要这个。

main.cpp:72:30: error: 'GLchar' does not name a type
main.cpp:72:38: warning: ISO C++ forbids declaration of 'vShaderFile' with no type [-fpermissive]
main.cpp:72:57: error: 'GLchar' does not name a type
main.cpp:72:65: warning: ISO C++ forbids declaration of 'fShaderFile' with no type [-fpermissive]
main.cpp: In function 'void initShader(const int*, const int*)':
main.cpp:75:5: error: 'GLchar' was not declared in this scope
main.cpp:75:13: error: 'vSource' was not declared in this scope
main.cpp:75:23: error: 'fSource' was not declared in this scope
main.cpp:80:43: error: cannot convert 'const int*' to 'const char*' for argument '1' to 'char* readShaderSource(const char*)'
main.cpp:83:43: error: cannot convert 'const int*' to 'const char*' for argument '1' to 'char* readShaderSource(const char*)'
main.cpp:88:30: error: 'GL_VERTEX_SHADER' was not declared in this scope
main.cpp:88:46: error: 'glCreateShader' was not declared in this scope
main.cpp:89:30: error: 'GL_FRAGMENT_SHADER' was not declared in this scope
main.cpp:90:31: error: 'glCreateProgram' was not declared in this scope
main.cpp:94:36: error: 'glAttachShader' was not declared in this scope
main.cpp:99:39: warning: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
main.cpp:99:39: warning: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
main.cpp:99:33: error: expected primary-expression before 'const'
main.cpp:99:33: error: expected ')' before 'const'
main.cpp:100:39: warning: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
main.cpp:100:39: warning: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
main.cpp:100:33: error: expected primary-expression before 'const'
main.cpp:100:33: error: expected ')' before 'const'
main.cpp:104:28: error: 'glCompileShader' was not declared in this scope
main.cpp:109:28: error: 'GL_COMPILE_STATUS' was not declared in this scope
main.cpp:109:54: error: 'glGetShaderiv' was not declared in this scope
main.cpp:117:26: error: 'glLinkProgram' was not declared in this scope
main.cpp:118:28: error: 'GL_LINK_STATUS' was not declared in this scope
main.cpp:123:25: error: 'glUseProgram' was not declared in this scope

Answer 1

我认为你应该退一步，阅读http://www.arcsynthesis.org/gltut/。它有教程和关于如何构建它们的章节。

Answer 2

有这样的错误

main.cpp:72:30: error: 'GLchar' does not name a type

我首先在我的源代码中添加正确的include指令。如果没有发布一些实际的源代码，我不能告诉你更多。

更新

在链接的源代码中有这样的：

#include <GLUT/glut.h>

GLUT/glut.h不是GLUT标头的标准位置，因此所有这些错误。如果我必须做出有根据的猜测，那么这个程序是在MacOS X上编写的。只有在MacOS X上你可以使用更新的OpenGL函数（比如着色器）而不会跳过一些箍（在运行时加载扩展和更新的版本函数）， MacOS X的成本并没有真正跟上新的OpenGL版本。

我建议安装GLEW（可从http://glew.sf.net获得）并替换以下

#include <GL/glew.h>
#include <GL/glut.h>

在 glewInit()之后添加对glutCreateWindow(…) 的调用。

如何在Windows中运行基本的“Hello World”GLSL程序？

2 个答案:

更新