Re: DerelictGL program draw nothing

[Ivan Agafonov]

On Monday, 3 September 2012 at 15:21:59 UTC, Zhenya wrote:

Why this simple program don't show white square?

import std.stdio;

import derelict.opengl3.gl;
import derelict.glfw3.glfw3;

const uint width = 200;
const uint height = 200;

void init()
{
        glViewport(0,0,width,height);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glOrtho(-width,width,-height,height,-1,1);
        glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
}

void display()
{
        glClear(GL_COLOR_BUFFER_BIT);
        glBegin(GL_POLYGON);
                glVertex2d(0,0);
                glVertex2d(0,height);
                glVertex2d(width,height);
                glVertex2d(height,0);
        glEnd();
}

void main()
{
        DerelictGL.load();
        DerelictGLFW3.load();
        glfwInit();
        GLFWwindow window;

window = glfwCreateWindow(width,height,GLFW_WINDOWED,"Hello DerelictGLFW3",null);

        init();
        bool opened = true;
        while(opened)
        {

opened = !glfwGetWindowParam(window,GLFW_CLOSE_REQUESTED) && !glfwGetKey(window,GLFW_KEY_ESC);

                display();
                glfwSwapBuffers(window);
                glfwWaitEvents();
        }
        glfwTerminate();
}

width and height must be int, not uint.
After window = glfwCreateWindow();
put glfwMakeContextCurrent(window);
And it will work!