simplegl.c

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

const GLfloat vertices[] = {-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f};
GLuint vertexBuffer;
const GLuint  elements[] = {0, 1, 2, 3};
GLuint elementBuffer;

void render();

int main(int argc, char* argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
    glutInitWindowSize(400, 300);
    glutCreateWindow("SimpleGL");
    glutDisplayFunc(&render);
    
    glGenBuffers(1, &vertexBuffer);
    glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
    
    glGenBuffers(1, &elementBuffer);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementBuffer);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(elements), elements, GL_STATIC_DRAW);
    
    glutMainLoop();
    return 0;
}


void render()
{
    glClearColor(0.2f, 0.2f, 0.2f, 1.0f);
    glClear(GL_COLOR_BUFFER_BIT);
    
    glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
    glVertexPointer(2, GL_FLOAT, sizeof(GLfloat) * 2, (void*)0);
    glEnableClientState(GL_VERTEX_ARRAY);
    
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementBuffer);
    glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_INT, (void*)0);
    
    glDisableClientState(GL_VERTEX_ARRAY);
    glutSwapBuffers();
}

simplegl.d

module simplegl;

import c.gl;
import c.glut;


const GLfloat[] vertices = [-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f];
__gshared GLuint vertexBuffer; 
const GLuint[]  elements = [0, 1, 2, 3];
__gshared GLuint elementBuffer;

void main()
{
    int argc = 1;
    char*[] argv = ["./dummyexe".dup.ptr];
    glutInit(&argc, argv.ptr);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
    glutInitWindowSize(400, 300);
    glutCreateWindow("SimpleGL");
    glutDisplayFunc(&render);
    
    glGenBuffers(1, &vertexBuffer);
    glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
    glBufferData(GL_ARRAY_BUFFER, vertices.sizeof, vertices.ptr, GL_STATIC_DRAW);
    
    glGenBuffers(1, &elementBuffer);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementBuffer);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, elements.sizeof, elements.ptr, GL_STATIC_DRAW);
    
    glutMainLoop();
}


void render()
{
    glClearColor(0.2f, 0.2f, 0.2f, 1.0f);
    glClear(GL_COLOR_BUFFER_BIT);
    
    glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
    glVertexPointer(2, GL_FLOAT, GLfloat.sizeof * 2, cast(void*)0);
    glEnableClientState(GL_VERTEX_ARRAY);
    
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementBuffer);
    glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_INT, cast(void*)0);
    
    glDisableClientState(GL_VERTEX_ARRAY);
    glutSwapBuffers();
}