C++ GLFW setWindowIcon - c++

So with created a window in C ++ using the GLFW library which also creates an OpenGL context. And after that I decided to add an icon to this window. There were 2 options, use either STB or SOIL to load the icon. I chose STB Image. I downloaded it and added it to my project. Everything works no errors, but for some reason my icon does not appear. It seems like the path I indicated is correct and included the path in the project in VS 2019.
Since I use premake5 to set the paths and to simplify the assembly, my path is specified how "%{prj.name}/libs/stb/include" and in VS 2019 there is just a path based on the name of the application libs/stb/include .
Here the image
And it's my code:
#define STB_IMAGE_IMPLEMENTATION
#include "CTXEngine/utils/stb_image.h"
void WinWindow::setIcon()
{
//stb load
GLFWimage images[2];
images[0].pixels = stbi_load("assets/textures/logo_16x16.png", &images[0].width, &images[0].height, 0, 4);
images[1].pixels = stbi_load("assets/textures/logo_32x32.png", &images[1].width, &images[1].height, 0, 4);
glfwSetWindowIcon(this->window, 1, images);
stbi_image_free(images[0].pixels);
stbi_image_free(images[1].pixels);
}
If you need see my window creating code, here it its:
#include "GLFW/glfw3.h"
/*
Intialize the WINDOWS GLFW library for window. If library is not
initialize, then application will be closed.
*/
void WinWindow::initLibrary()
{
if (!glfwInit())
{
this->glfwInitialized = false;
}
else
{
this->glfwInitialized = true;
}
if (!this->glfwInitialized)
{
CTX_ENGINE_ERROR("Glfw window is not initialized.")
CTX_ENGINE_INFO("Shuttdown internal servers...")
exit(-1);
}
}
/*
Create new WINDOWS GLFW window and create the context form graphical API
OpenGl.
*/
void WinWindow::createWindow()
{
CTX_ENGINE_INFO("Creating GLFW window...")
this->initLibrary();
/* Create a windowed mode window and its OpenGL context */
this->window = glfwCreateWindow(this->width, this->height, this->title, this->fullscreen ? glfwGetPrimaryMonitor() : NULL, NULL);
if (!window)
{
CTX_ENGINE_ERROR("Glfw window is not initialized.")
CTX_ENGINE_INFO("Shuttdown internal servers...")
this->terminateAPI();
exit(-1);
}
this->videoMode = glfwGetVideoMode(glfwGetPrimaryMonitor());
/* Make the window's context current */
glfwMakeContextCurrent(this->window);
glfwSetWindowTitle(this->window, this->title);
glfwSetWindowSize(this->window, this->width, this->height);
glfwSetWindowAspectRatio(this->window, 16, 9);
glfwSetWindowSizeLimits(this->window, 854, 480, 1600, 900);
glfwSetWindowPos(this->window, ((this->videoMode->width - this->width) / 2),
((this->videoMode->height - this->height) / 2));
}
And finally code in the init function:
#include "CTXImportHeaders.h"
#include "CTXEngine/core/Core.h" //its just my class
#include "CTXEngine/core/CoreBehaviour.h" //its just my class
#include "CTXEngine/settings/GameSettings.h" //its just my class
using namespace std;
/*
This method be inititalize all core engine classes, structs, namespaces,
and other parameters, and configurations.
*/
void Core::init()
{
GameSettings settings;
this->window.setTitle(settings.gameTitle); // move params to game configuration
this->window.setWindowResolution(settings.gameWidth, settings.gameHeight); // move params to game configuration
this->window.setFullscreen(settings.gameFullscreen);
this->window.setIcon();
this->window.createWindow();
}
Its screenshot of my window without icon

I think you are confused in path. The path of the image should be relative to your .vcxproj files
├───assets
│ ├───Logos
| | |_ Icon.png
| |
│ ├───Shaders
│ └───textures
└───src
|
|___.vcxproj
I used this code:
int width, height, chennal;
stbi_uc* img = stbi_load("assets/Logos/Icon.png", &width, &height, &chennal, 0); //rgba channels
if (img == NULL) std::cout << "Icon Can Not Be Loaded\n";
m_Images->height = height;
m_Images->width = width;
m_Images[0].pixels = img;
glfwSetWindowIcon(m_Window, 1, m_Images);

Related

main already defined in main.obj

I'm trying to set up an SDL project with Visual Studio 2019 using this article:
https://www.wikihow.com/Set-Up-SDL-with-Visual-Studio
but the compiler is throwing me the errors 'one or more multiply defined symbols found' and
'_main already defined in main.obj'.
main.obj is a file in the debug folder of my project but when I try deleting it or the entire debug folder, VS recreates it when I run the project.
I've read that c++ can't have more than one main function but I can't open the main.obj file and I don't really want to delete the one in main.cpp
Here's the code I'm running and thanks for your help!
#include "SDL.h"
#include <stdio.h>
int main(int argc, char* argv[])
{
SDL_Init(SDL_INIT_VIDEO);
SDL_Window* window = SDL_CreateWindow
("An SDL2 window", // window's title
10, 25, // coordinates on the screen, in pixels, of the window's upper left corner
640, 480, // window's length and height in pixels
SDL_WINDOW_OPENGL);
SDL_Delay(3000); // window lasts 3 seconds
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
Glad to know it works now. Maybe you had a messy file structure with your previous SDL installation. Anyways, I think it might be interesting to show how the SDL dependency can be removed from your main.cpp file, to avoid such problems in the future.
First, let's consider the example in your question. The example is not very useful in practice, but I'll show a better version after.
The main idea is hiding everything that has to do with SDL from your main.cpp and headers.
1. Simple Example
// MySDL.h - NO SDL STUFF
class MySDL
{
public:
MySDL() = default; // or whatever you need
void runtest() const; // here we'll run the 3sec window
};
Now, we can put all our SDL stuff in the cpp file:
// MySDL.cpp
#include "MySDL.h"
#include "SDL.h" // HERE WE INCLUDE SDL
void MySDL::runtest()
{
SDL_Init(SDL_INIT_EVERYTHING);
SDL_Window* window = SDL_CreateWindow("yee haw", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 600, 400, SDL_WINDOW_SHOWN);
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, 0);
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Delay(3000);
}
No SDL included in main.cpp, we just include our SDL interface MySDL.h.
// Now you can use your SDL interface like this
int main(int, char* [])
{
MySDL sdl;
sdl.runtest();
return 0;
}
2. Better Version
However, you would typically want something more sofisticated than a window which disappears in 3 seconds. Therefore, you might want to store class members which depends on SDL. But then, you would have to #include "SDL.h" in your MySDL.h header file, which would give you the same problems as described in your question and comments. To remove this dependency, we can use the pimpl idiom.
The header file now includes a pointer to our SDL implementation. This SDL implementation will be defined in the cpp file in order to remove the SDL dependency.
// MySDL.h
class MySDL
{
public:
MySDL() = default; // or whatever you need
~MySDL();
void doSmthWithYourWindow(/*args*/);
private:
// pointer to our SDLImplementation (defined in cpp file)
class SDLImplementation;
std::unique_ptr<SDLImplementation> _sdl;
};
In our cpp file, we define the SDLImplementation, and MySDL has access to that implementation through the _sdl pointer.
// MySDL.cpp
#include "MySDL.h"
#include "SDL.h"
// here we can store class members which depend on SDL
struct MySDL::SDLImplementation
{
SDLImplementation()
{
SDL_Init(SDL_INIT_EVERYTHING);
_window = SDL_CreateWindow("yee haw", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 600, 400, SDL_WINDOW_SHOWN);
_renderer = SDL_CreateRenderer(_window, -1, 0);
SDL_SetRenderDrawColor(_renderer, 0, 255, 0, 255);
SDL_RenderClear(_renderer);
SDL_RenderPresent(_renderer);
}
// functionality of your SDL implementation
void turnWindowUpsideDown() { /* _window->turnUpsideDown(); */ }
// members depending on SDL
SDL_Window* _window;
SDL_Renderer* _renderer;
};
MySDL::~MySDL() = default;
void MySDL::doSmthWithYourWindow(/*args*/)
{
// here we have access to our SDL implementation
_sdl->turnWindowUpsideDown();
}
Just like before, we only include our MySDL.h interface in the main.cpp file.
int main(int, char* [])
{
MySDL sdl;
sdl.doSmthWithYourWindow();
return 0;
}
So I ended up deleting SDL and completely restarting with a different tutorial linked here:
https://www.youtube.com/watch?v=QQzAHcojEKg
Not really sure what the difference was but it worked. Anyways, thanks for your help and I'll put the new code here.
#include "SDL.h"
int main(int argc, char* argv[])
{
SDL_Init(SDL_INIT_EVERYTHING);
SDL_Window* window = SDL_CreateWindow("yee haw", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 600, 400, SDL_WINDOW_SHOWN);
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, 0);
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Delay(3000);
return 0;
}

Having trouble initializing bgfx (with an sdl2 window)

I'm attempting to create a window using SDL2 and initialize BGFX to use it. My current test is just to set the window to purple using a clear color.
I tried creating a window using CreateWindowEx as well, and was also unable to update the window with the clear color I specified in my call to bgfx::setViewClear. I've been scouring open source projects as well as the docs and samples, and I can't figure out what step of bgfx initialization/update I could be missing. Please help! I've attached my current approach as a small test main.
int main(int, char**) {
SDL_InitSubSystem(SDL_INIT_VIDEO);
const int width = 800;
const int height = 600;
SDL_Window* window = nullptr;
HWND nativeWindow;
// sdl2
{
window = SDL_CreateWindow(
"test_window",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
width, height,
0
);
SDL_SysWMinfo windowManInfo;
SDL_VERSION(&windowManInfo.version);
if (SDL_GetWindowWMInfo(window, &windowManInfo)) {
nativeWindow = windowManInfo.info.win.window;
}
}
// bgfx
{
bgfx::PlatformData platformData;
platformData.ndt = nullptr;
platformData.nwh = nativeWindow;
bgfx::setPlatformData(platformData);
// prevent creation of a renderer thread
bgfx::renderFrame();
bgfx::Init init;
init.type = bgfx::RendererType::Count;
init.resolution.width = width;
init.resolution.height = height;
init.resolution.reset = BGFX_RESET_VSYNC;
bgfx::init(init);
bgfx::setViewClear(0, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH, 0x443355FF /*purple*/, 1.f, 0);
}
while (1) {
// sdl events
{
SDL_Event _event;
while (SDL_PollEvent(&_event) > 0);
}
bgfx::frame();
}
bgfx::shutdown();
SDL_Quit();
return 0;
}
After asking around work/etc.. I finally got a solution, and there were actually a couple of things that I was missing.
Because I wasn't adding any render work to the frame, bgfx is 'smart' and doesn't actually do anything. Adding a call to bgfx::touch will add an empty primitve for rendering. After I added this I could see a small dot in the top-left of my window, which leads to the other call I was missing.
I never set my view! I was also only rendering to one pixel of my window. By adding a call to bgfx::setViewRect I was able to set a size for my window view and the clear color finally took.

ImGui with the glad openGL loader throws segmentation fault (core dumped)

I am new to the ImGui library and recently i've been trying out the examples included. Everything worked like a charm until I changed the include (and functions) of gl3w to glad (the loader i would like to use). The moment I swapped between the two loaders I got a segmentation fault exception inside the imgui_impl_glfw_gl3.cpp file. I found a post which suggested that this may happen because of some functions failing to "bind" and producing nullpointers.
I have located the error in line 216 of imgui_impl_glfw_gl3.cpp
this is the code in line 216:
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
I have also changed the include file in imgui_impl_glfw_gl3.cpp from gl3w to glad with no results.
This is the main function i am executing (it's the basic opengl3 example of imgui using glad):
#include "gui/imgui.h"
#include "gui/imgui_impl_glfw_gl3.h"
#include <stdio.h>
#include <glad/glad.h> // This example is using gl3w to access OpenGL functions (because it is small). You may use glew/glad/glLoadGen/etc. whatever already works for you.
#include <GLFW/glfw3.h>
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error %d: %s\n", error, description);
}
int main(int, char**)
{
// Setup window
glfwSetErrorCallback(error_callback);
if (!glfwInit())
return 1;
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui OpenGL3 example", NULL, NULL);
glfwMakeContextCurrent(window);
glfwSwapInterval(1); // Enable vsync
glfwInit();
// Setup ImGui binding
ImGui_ImplGlfwGL3_Init(window, true);
// Setup style
//ImGui::StyleColorsDark();
ImGui::StyleColorsClassic();
bool show_demo_window = true;
bool show_another_window = false;
bool algo = true;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
// Main loop
while (!glfwWindowShouldClose(window))
{
glfwPollEvents();
ImGui_ImplGlfwGL3_NewFrame();
// 1. Show a simple window.
// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
{
static float f = 0.0f;
static int counter = 0;
ImGui::Text("Hello, world!"); // Display some text (you can use a format string too)
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("COLORINES", (float*)&clear_color); // Edit 3 floats representing a color
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our windows open/close state
ImGui::Checkbox("Booleanooooo", &algo);
ImGui::Checkbox("Another Window", &show_another_window);
if (ImGui::Button("Button")) // Buttons return true when clicked (NB: most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("pues se ve que hay texto: %d", algo);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
}
{
ImGui::Begin("VENTANA WAPA");
ImGui::Text("POS SA QUEDAO BUENA VENTANA");
static float yee = 0.0f;
ImGui::SliderFloat("lel", &yee,1.0f,0.5f);
ImGui::End();
}
// 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
if (show_another_window)
{
ImGui::Begin("Another Window", &show_another_window);
ImGui::Text("Hello from another window!");
if (ImGui::Button("Close Me"))
show_another_window = false;
ImGui::End();
}
// 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
if (show_demo_window)
{
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
ImGui::ShowDemoWindow(&show_demo_window);
}
// Rendering
int display_w, display_h;
glfwGetFramebufferSize(window, &display_w, &display_h);
glViewport(0, 0, display_w, display_h);
glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
glClear(GL_COLOR_BUFFER_BIT);
ImGui::Render();
glfwSwapBuffers(window);
}
// Cleanup
//ImGui_ImplGlfwGL3_Shutdown();
glfwTerminate();
return 0;
}
I have no clue why this is happenning and I'm pretty new to openGL an ImGui so, any ideas? :(
Glad & gl3w are both extension loader libraries. They generally need to be initialized on a current GL context before use.
The original code called gl3wInit(). Yours is missing any sort of glad init.
Make sure you initialize glad (gladLoadGLLoader((GLADloadproc) glfwGetProcAddress)) after glfwMakeContextCurrent() and before you call any OpenGL functions.
Otherwise all the OpenGL function pointers glad declares will remain NULL. Trying to call NULL function pointers generally doesn't go well for a process.

Including SDL.h causes program to terminate immediately after building, and not run, but not give an error

This test program should create a blank window that stays open until you x-it-out. I copied it from SDL's documentation to make sure it is correct. It can be found here.
// Example program:
// Using SDL2 to create an application window
#include "SDL.h"
#include <stdio.h>
int main(int argc, char* argv[]) {
SDL_Window *window; // Declare a pointer
SDL_Init(SDL_INIT_VIDEO); // Initialize SDL2
// Create an application window with the following settings:
window = SDL_CreateWindow(
"An SDL2 window", // window title
SDL_WINDOWPOS_UNDEFINED, // initial x position
SDL_WINDOWPOS_UNDEFINED, // initial y position
640, // width, in pixels
480, // height, in pixels
SDL_WINDOW_OPENGL // flags - see below
);
// Check that the window was successfully created
if (window == NULL) {
// In the case that the window could not be made...
printf("Could not create window: %s\n", SDL_GetError());
return 1;
}
//game loop, quitGame to quit
bool quitGame = false;
//var for checking events
SDL_Event event;
while(!quitGame) {
//Update particles
//Draw particles
//Check for events
while(SDL_PollEvent(&event)) {
if(event.type == SDL_QUIT)
quitGame = true;
}
}
// Close and destroy the window
SDL_DestroyWindow(window);
// Clean up
SDL_Quit();
return 0;
}
It doesn't create a window and terminates immediately, but gives no errors.
I'm using Eclipse, mingw32, and the latest stable release of SDL2. SDL2's libraries and headers are within a file in my C drive. I am using a 64 bit system. I include the entire folder of SDL2's header files. The only library folder I have linked is the one within the 64 bit part of the SDL2 folder. The libraries I have linked are the ones suggested by HolyBlackCat, (in this order) mingw32, SDL2main, and SDL2. Any help is greatly appreciated. Thanks!

GL/glx isn't linking correctly

System Specs and task
I am using Code::Blocks on Ubuntu 10.10 and playing around with OpenGL and glx. I'm in the process of learning C++(from a background in C and Java), so the style of any code doesn't conform to any real good standards (but I'm open to suggestions on how to improve, even if you don't have an answer to the question)
Edit:
Huge Realization: The default OpenGL Project Code::Blocks creates is C, not C++. I'm looking into this now.
I'm currently trying to modify the default OpenGL project on Code::Blocks into a simple 3d engine. I am currently getting the error:
expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before 'Draw'
Which disappears as soon as I comment out the #include for < GL/glx.h>
I read on a forum somewhere that Code::Blocks doesn't look in usr/include/ by default, but I added that to the search directories for the compiler in the project build options and it didn't seem to fix anything.
Code:
main.cpp: main.c:
#include <time.h>
#include "Draw.h"
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv)
{
/*draw init here*/
Draw::Draw renderer = Draw::Draw.getDraw();
printf( "Press left mouse button to rotate around X axis\n" );
printf( "Press middle mouse button to rotate around Y axis\n" );
printf( "Press right mouse button to rotate around Z axis\n" );
printf( "Press ESC to quit the application\n" );
/* timing variable*/
/* Set it to delay half a second before rendering the first frame*/
clock_t flip_time = clock() + 0.5f * CLOCKS_PER_SEC;
while (1)
{
/* Update models */
/* Draw scene */
/* wait until it's been 1/60th of a second*/
while(clock() < flip_time){}
flip_time = clock() + (1.0f/60.0f) * CLOCKS_PER_SEC;
/* Actually flip the frame */
}
}
Draw.h:
#ifndef DRAW_H
#define DRAW_H
#include <GL/glx.h> /* This is the problem line */
#include <GL/gl.h>
#include <X11/X.h> /* X11 constant (e.g. TrueColor) */
#include <X11/keysym.h>
class Draw
{
public:
static Draw getDraw();
virtual ~Draw();
void update();
void render();
protected:
private:
Draw();
bool init();
/* The singleton*/
static Draw *instance;
static bool exists;
/* X Window values */
Display *dpy;
Window win;
GLboolean doubleBuffer;
/* X Parameters*/
XVisualInfo *vi;
Colormap cmap;
XSetWindowAttributes swa;
GLXContext cx;
XEvent event;
int dummy;
};
#endif // DRAW_H
Last, but not least Draw.cpp:
#include "Draw.h"
/* Set up the singleton*/
bool Draw::exists = false;
Draw* Draw::instance = NULL;
Draw::Draw()
{
/*TODO: make this constructor */
}
Draw::~Draw()
{
//dtor
}
Draw Draw::getDraw()
{
if(!exists)
{
instance = new Draw();
instance->init();
exists = true; //Thanks mat, This line was accidentally removed with extraneous comments
}
return *instance;
}
bool Draw::init()
{
/* Get the buffers ready */
static int snglBuf[] = {GLX_RGBA, GLX_DEPTH_SIZE, 16, None};
static int dblBuf[] = {GLX_RGBA, GLX_DEPTH_SIZE, 16, GLX_DOUBLEBUFFER, None};
/* Double Buffered is best*/
doubleBuffer = GL_TRUE;
/*TODO: add constructor if it hasn't been constructed already*/
dpy = XOpenDisplay(NULL);
if (dpy == NULL)
{
return false;
}
/* make sure OpenGL's GLX extension supported */
if(!glXQueryExtension(dpy, &dummy, &dummy))
{
return false;
}
/* find an appropriate visual */
/* find an OpenGL-capable RGB visual with depth buffer */
vi = glXChooseVisual(dpy, DefaultScreen(dpy), dblBuf);
if (vi == NULL)
{
vi = glXChooseVisual(dpy, DefaultScreen(dpy), snglBuf);
if (vi == NULL)
{
return false;
}
doubleBuffer = GL_FALSE;
}
/*
TODO: Fix or remove this
if(vi->class != TrueColor)
{
return false;
}
*/
/* create an OpenGL rendering context */
/* create an OpenGL rendering context */
cx = glXCreateContext(dpy, vi, /* no shared dlists */ None,
/* direct rendering if possible */ GL_TRUE);
if (cx == NULL)
{
return false;
}
/* create an X window with the selected visual */
/* create an X colormap since probably not using default visual */
cmap = XCreateColormap(dpy, RootWindow(dpy, vi->screen), vi->visual, AllocNone);
swa.colormap = cmap;
swa.border_pixel = 0;
swa.event_mask = KeyPressMask | ExposureMask
| ButtonPressMask | StructureNotifyMask;
win = XCreateWindow(dpy, RootWindow(dpy, vi->screen), 0, 0,
300, 300, 0, vi->depth, InputOutput, vi->visual,
CWBorderPixel | CWColormap | CWEventMask, &swa);
XSetStandardProperties(dpy, win, "main", "main", None,
NULL, NULL, NULL);
/* bind the rendering context to the window */
glXMakeCurrent(dpy, win, cx);
/* request the X window to be displayed on the screen */
XMapWindow(dpy, win);
/* configure the OpenGL context for rendering */
glEnable(GL_DEPTH_TEST); /* enable depth buffering */
glDepthFunc(GL_LESS); /* pedantic, GL_LESS is the default */
glClearDepth(1.0); /* pedantic, 1.0 is the default */
/* frame buffer clears should be to black */
glClearColor(0.0, 0.0, 0.0, 0.0);
/* set up projection transform */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1.0, 1.0, -1.0, 1.0, 1.0, 10.0);
/* establish initial viewport */
/* pedantic, full window size is default viewport */
glViewport(0, 0, 300, 300);
return true;
}
void Draw::update()
{
/*TODO: Add things to draw here*/
}
void Draw::render()
{
/* actually flip buffers here */
}
I removed a ton of comments before posting this here, but that shouldn't affect whether or not it compiles.
Thanks!
This line in your main file is wrong:
Draw::Draw renderer = Draw::Draw.getDraw();
Draw::Draw is not a type. To get this to compile, you just need:
Draw renderer = Draw.getDraw();
It looks like you're trying to build a singleton. You code does not do that at all, you'll get a copy each time. (Note that you're not setting exists anywhere, but that's just an extra bug.) You should be returning a pointer or a reference to the shared instance. See for instance this article to get the syntax right: C++ Singleton design pattern.
I found the issue with the linking.
The default project for OpenGL in Code::Blocks is NOT C++, it's C. I configured it to use g++ and it fixed the issue with glx not linking in correctly. I revised my singleton to look a little more like this and it works correctly now too. I have an issue now with the window not appearing, but I should be able to figure that out.
Thanks!