// For use by other shader programs that want to reuse this one's vertex
// data
void QuadShaderProgram::
BindVertexBuffer( const ShaderProgram& ac_roProgram,
const char* ac_pcPositionAttributeName )
{
glBindBuffer( GL_ARRAY_BUFFER, Instance().m_uiVertexBufferID );
GLint iPositionID = glGetAttribLocation( ac_roProgram.ID(),
ac_pcPositionAttributeName );
glVertexAttribPointer( iPositionID, 2, GL_FLOAT, GL_FALSE, 0, 0 );
glEnableVertexAttribArray( iPositionID );
}
int main(int argc, char** argv) {
GLFWwindow* window;
if (!glfwInit()) {
std::cout << "Failed to init GLFW!" << std::endl;
return EXIT_FAILURE;
}
window = glfwCreateWindow(WIDTH, HEIGHT, "OpenGL", nullptr, nullptr);
if (!window)
{
std::cout << "Failed to create GLFW window!" << std::endl;
return EXIT_FAILURE;
}
glfwMakeContextCurrent(window);
glewInit();
Shader vert = Shader(GL_VERTEX_SHADER, "data/shaders/basic.vert");
Shader frag = Shader(GL_FRAGMENT_SHADER, "data/shaders/fractal.frag");
ShaderProgram program = ShaderProgram(vert, frag);
program.Enable();
Vec2 size = Vec2(800, 600);
std::cout << size << std::endl;
Log(size.Length());
Log(size.Normalize());
std::vector<Vec2> verticies;
verticies.push_back(Vec2(-1, 1));
verticies.push_back(Vec2(1, 1));
verticies.push_back(Vec2(-1, -1));
verticies.push_back(Vec2(1, -1));
Vec2 test;
test = test.Normalize(verticies[0]);
Log(test);
Log(test.AngleRadians());
Log(test.AngleDegrees());
GLint sizeID = glGetUniformLocation(program.ID(), "uSize");
glUniform2f(sizeID, WIDTH, HEIGHT);
GLint offset = glGetUniformLocation(program.ID(), "offset");
glUniform2f(offset, 0,0);
GLint scale = glGetUniformLocation(program.ID(), "scale");
glUniform1f(scale, 2.0f);
while (!glfwWindowShouldClose(window))
{
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_TRIANGLE_STRIP);
for (size_t i = 0; i < verticies.size(); i++)
{
glVertex2f(verticies[i].X,verticies[i].Y);
}
glEnd();
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
std::cin.ignore();
return 0;
}