orca/sketches/multi_surface/main.c

#include <stdio.h>
#include <stdlib.h>

#define MG_INCLUDE_GL_API 1
#include "milepost.h"

int main()
{
    mp_init();
    mp_clock_init(); //TODO put that in mp_init()?

    mp_rect windowRect = { .x = 100, .y = 100, .w = 810, .h = 610 };
    mp_window window = mp_window_create(windowRect, "test", 0);

    mp_rect contentRect = mp_window_get_content_rect(window);

    //NOTE: create surface
    mg_surface surface1 = mg_surface_create_for_window(window, MG_CANVAS);
    if(mg_surface_is_nil(surface1))
    {
        printf("Error: couldn't create surface 1\n");
        return (-1);
    }
    mg_surface_swap_interval(surface1, 0);
    //*
    mg_surface surface2 = mg_surface_create_for_window(window, MG_CANVAS);
    if(mg_surface_is_nil(surface2))
    {
        printf("Error: couldn't create surface 2\n");
        return (-1);
    }
    mg_surface_swap_interval(surface2, 0);
    //*/
    mg_canvas canvas1 = mg_canvas_create();
    if(mg_canvas_is_nil(canvas1))
    {
        printf("Error: couldn't create canvas 1\n");
        return (-1);
    }
    //*
    mg_canvas canvas2 = mg_canvas_create();
    if(mg_canvas_is_nil(canvas2))
    {
        printf("Error: couldn't create canvas 2\n");
        return (-1);
    }
    //*/
    // start app
    mp_window_center(window);
    mp_window_bring_to_front(window);
    mp_window_focus(window);

    while(!mp_should_quit())
    {
        f64 startTime = mp_get_time(MP_CLOCK_MONOTONIC);

        mp_pump_events(0);
        mp_event* event = 0;
        while((event = mp_next_event(mem_scratch())) != 0)
        {
            switch(event->type)
            {
                case MP_EVENT_WINDOW_CLOSE:
                {
                    mp_request_quit();
                }
                break;

                default:
                    break;
            }
        }

        mg_surface_prepare(surface1);
        mg_canvas_set_current(canvas1);

        mg_set_color_rgba(0, 0, 0.5, 0.5);
        mg_clear();

        mg_set_color_rgba(1, 0, 0, 1);
        mg_rectangle_fill(100, 100, 300, 150);

        mg_render(surface1, canvas1);

        //*
        mg_surface_prepare(surface2);
        mg_canvas_set_current(canvas2);

        mg_set_color_rgba(0, 0, 0, 0);
        mg_clear();

        mg_set_color_rgba(0, 0, 1, 1);
        mg_rectangle_fill(300, 300, 300, 200);

        mg_render(surface2, canvas2);
        //*/

        mg_surface_present(surface1);
        mg_surface_present(surface2);

        mem_arena_clear(mem_scratch());
    }

    mg_canvas_destroy(canvas1);
    mg_surface_destroy(surface1);
    mg_canvas_destroy(canvas2);
    mg_surface_destroy(surface2);

    mp_window_destroy(window);

    mp_terminate();

    return (0);
}