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POSDL/OpenGL commands not set in scope?
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Id
18306407
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AcceptedAnswerId
18311770
AnswerCount
2
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2013-08-19T04:30:09.247
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2013-12-20T15:29:16.383
LastEditDate
2013-08-19T13:53:55.490
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PostTypeId
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text
Body
I'm trying to write a very simple sdl and gl program on a mac to create a triangle, but its not really working. (in c++) <pre><code>#include <iostream> #include "SDL/SDL.h" #include <OpenGL/gl.h> #include <OpenGL/glu.h> /*INITIALIZE*/ void init() { glClearColor(0.0,0.0,0.0,1.0); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(45,640.0/480.0,1.0,500.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } /*DISPLAY*/ void display() // drawing { glClear(GL_COLOR_BUFFER_BIT); glBegin(GL_TRIANGLES); glVertex3f(0.0,2.0,-5.0); glVertex3f(-2.0,-2.0,-5.0); glVertex3f(2.0,-2.0,-5.0); glEnd(); } /*MAIN*/ int main(int argc, char** argv) // arguments required { SDL_Init(SDL_INIT_EVERYTHING); // initialize and setup sdl SDL_Surface* screen = SDL_SetVideoMode(640,480,32,SDL_SWSURFACE|SDL_OPENGL); bool running = true; Uint32 start; SDL_Event event; init(); while (running) { start = SDL_GetTicks(); while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_QUIT: running = false; break; } } display(); SDL_GL_SwapBuffers(); if(1000/30 > (SDL_GetTicks() - start)) SDL_Delay(1000/30 - (SDL_GetTicks() - start)); } SDL_Quit(); return 0; } </code></pre> But when I compile it: <pre><code>Computer:sdlcode User$ g++ third.cpp -GL -GLU third.cpp: In function ‘int main(int, char**)’: third.cpp:34: error: ‘SDL_OPENGL’ was not declared in this scope third.cpp:34: error: ‘SDL_SetVideoMode’ was not declared in this scope third.cpp:55: error: ‘SDL_GL_SwapBuffers’ was not declared in this scope Computer:sdlcode User$ </code></pre> Whats going wrong here and how do I prevent it from having further commands undeclared?
Tags
<opengl><scope><command><sdl><undefined>
Title
SDL/OpenGL commands not set in scope?
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PostAcceptedAnswerId
1. PO
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 PostTypePostTypeId
 PTAnswer
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1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USgenpfault
UserOwnerUserId
1. USAaron Cruz
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1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
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 LTLinked
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1. This table or related slice is empty.
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1. PO
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 PTAnswer
2. PO
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1. This table or related slice is empty.
CommentsPostId
1. COWhat are you assuming that `g++` is doing with the `-GL` and `-GLU` flags? Did you mean `-lGL` and `-lGLU`?
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 PostPostId
 POSDL/OpenGL commands not set in scope?
 UserUserId
 USgenpfault

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