Evolution RenderSystem 1.1

rendersystem.cpp

void RenderSystem::Update(float elapsed) {
    // Loop through all of our renderables and render them
    for(int i = 0; i < m_bucketSize; i++) {
        if(m_components[i]) {
            // Cast to a Renderable we can use
            Renderable* component = (Renderable*)m_components[i];
            
            // Bind the vertex attribute object, which will bind the buffers and attributes for us
            glBindVertexArray(component->vertexAttribObject);
            
            // Attach the shader program
            glUseProgram(component->program);
            
            // Either draw from vertex array or indices if defined
            if(component->indexBuffer == 0)
                glDrawArrays(GL_TRIANGLES, 0, component->numTriangles * 3);
            else
                glDrawElements(GL_TRIANGLES, component->numTriangles * 3, GL_UNSIGNED_INT, 0);
            
            glBindVertexArray(0);
            glUseProgram(0);
        }
    }
    
    // Swap OpenGL buffers
    glfwSwapBuffers(m_window);
}