https://github.com/evanw/gl4

A small library for working with OpenGL 4
https://github.com/evanw/gl4

Last synced: 3 months ago
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A small library for working with OpenGL 4

• Host: GitHub
• URL: https://github.com/evanw/gl4
• Owner: evanw
• License: cc0-1.0
• Created: 2012-02-16T18:59:54.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2016-07-23T17:58:39.000Z (almost 9 years ago)
• Last Synced: 2025-03-17T12:02:06.957Z (3 months ago)
• Language: C++
• Homepage:
• Size: 37.1 KB
• Stars: 34
• Watchers: 4
• Forks: 6
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
## Introduction

This library provides simple wrappers around some OpenGL 4 functionality. It was created for the [Advanced GPU Programming](http://cs.brown.edu/courses/cs195v/) course at Brown University.

## Example

    #include 

    #include "gl4.h"

    Shader shader;

    Buffer quad;

    VAO layout;

    void setup() {

        shader.vertexShader(glsl(

            in vec2 vertex;

            out vec2 coord;

            void main() {

                coord = vertex * 0.5 + 0.5;

                gl_Position = vec4(vertex, 0.0, 1.0);

            }

        )).fragmentShader(glsl(

            in vec2 coord;

            out vec4 color;

            void main() {

                color = vec4(coord, 0.0, 1.0);

            }

        )).link();

        quad << vec2(-1, -1) << vec2(1, -1) << vec2(-1, 1) << vec2(1, 1);

        quad.upload();

        layout.create(shader, quad).attribute("vertex", 2).check();

    }

    void draw() {

        glClear(GL_COLOR_BUFFER_BIT);

        shader.use();

        layout.draw(GL_TRIANGLE_STRIP);

        shader.unuse();

        glutSwapBuffers();

    }

    int main(int argc, char *argv[]) {

        glutInit(&argc, argv);

        glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);

        glutCreateWindow("Example");

        glutReshapeWindow(800, 600);

        glutDisplayFunc(draw);

        setup();

        glutMainLoop();

        return 0;

    }