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#include <stdio.h>
#include <mgl/mgl.h>
#include <mgl/window/window.h>
#include <mgl/window/event.h>
#include <mgl/graphics/texture.h>
#include <mgl/graphics/rectangle.h>
#include <mgl/graphics/sprite.h>
#include <mgl/graphics/font.h>
#include <mgl/graphics/text.h>
#include <mgl/graphics/vertex_buffer.h>
#include <mgl/graphics/shader.h>
#include <mgl/system/clock.h>
typedef struct {
mgl_texture *texture;
mgl_font *font;
mgl_vertex_buffer *vertex_buffer;
mgl_shader_program *shader_program;
mgl_clock clock;
} Userdata;
static void draw(mgl_window *window, void *userdata) {
mgl_context *context = mgl_get_context();
Userdata *u = userdata;
mgl_rectangle rect = {
.color = { 255, 0, 0, 255 },
.position = { window->cursor_position.x, window->cursor_position.y },
.size = { 100.0f, 500.0f }
};
mgl_rectangle_draw(context, &rect);
mgl_shader_program_set_uniform_vec2f(u->shader_program, "resolution", (mgl_vec2f){ window->size.x, window->size.y });
mgl_sprite sprite;
mgl_sprite_init(&sprite, u->texture, 100.0f - 10.0f, 0.0f);
mgl_sprite_set_color(&sprite, (mgl_color){255, 255, 255, 128});
mgl_shader_program_use(u->shader_program);
mgl_sprite_draw(context, &sprite);
mgl_shader_program_use(NULL);
char str[255];
snprintf(str, sizeof(str), "Hello world!\nelapsed time: %f", mgl_clock_get_elapsed_time_seconds(&u->clock));
mgl_text text;
mgl_text_init(&text, u->font, str, 0.0f, 0.0f);
mgl_text_draw(context, &text);
mgl_text_deinit(&text);
mgl_vertex_buffer_set_position(u->vertex_buffer, (mgl_vec2f){ window->cursor_position.x, window->cursor_position.y });
mgl_vertex_buffer_draw(context, u->vertex_buffer, &u->font->texture);
}
int main(int argc, char **argv) {
if(mgl_init() != 0)
return 1;
mgl_texture texture;
mgl_font font;
mgl_vertex_buffer vertex_buffer;
mgl_shader_program shader_program;
Userdata userdata;
userdata.texture = &texture;
userdata.font = &font;
userdata.vertex_buffer = &vertex_buffer;
userdata.shader_program = &shader_program;
mgl_clock_init(&userdata.clock);
mgl_window window;
if(mgl_window_create(&window, "mgl", 1280, 720) != 0)
return 1;
if(mgl_texture_load_from_file(&texture, "tests/X11.png", NULL) != 0)
return 1;
if(mgl_font_load_from_file(&font, "/usr/share/fonts/noto/NotoSans-Regular.ttf", 32) != 0)
return 1;
if(mgl_shader_program_init(&shader_program) != 0)
return 1;
if(mgl_shader_program_add_shader_from_file(&shader_program, "tests/circle_mask.glsl", MGL_SHADER_FRAGMENT) != 0)
return 1;
if(mgl_shader_program_finalize(&shader_program) != 0)
return 1;
mgl_vertex_buffer_init(&vertex_buffer);
mgl_vertex vertices[4] = {
(mgl_vertex){
.position = {0.0f, 0.0f},
.texcoords = {0.0f, 0.0f},
.color = {255, 0, 0, 100}
},
(mgl_vertex){
.position = {font.texture.width, 0.0f},
.texcoords = {1.0f, 0.0f},
.color = {0, 255, 0, 100},
},
(mgl_vertex){
.position = {font.texture.width, font.texture.height},
.texcoords = {1.0f, 1.0f},
.color = {0, 0, 255, 100},
},
(mgl_vertex){
.position = {0.0f, font.texture.height},
.texcoords = {0.0f, 1.0f},
.color = {255, 0, 255, 100}
}
};
if(mgl_vertex_buffer_update(&vertex_buffer, vertices, 4, MGL_PRIMITIVE_QUADS, MGL_USAGE_STATIC) != 0)
return 1;
fprintf(stderr, "Font texture width: %d, texture height: %d\n", font.texture.width, font.texture.height);
mgl_event event;
for(;;) {
while(mgl_window_poll_event(&window, &event)) {
}
mgl_window_clear(&window, (mgl_color){0, 0, 0, 255});
draw(&window, &userdata);
mgl_window_display(&window);
}
mgl_vertex_buffer_deinit(&vertex_buffer);
mgl_shader_program_deinit(&shader_program);
mgl_font_unload(&font);
mgl_texture_unload(&texture);
mgl_window_deinit(&window);
mgl_deinit();
return 0;
}
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