void preview_render(void* userdata, float interpolation)
{
(void) interpolation;
struct preview_context* ctx = userdata;
/* Clear */
glClearColor(0.0f, 0.0f, 1.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
/* Setup shader */
struct preview_internal_state* is = ctx->_internal_state;
glUseProgram(is->shdr);
glUniform1i(glGetUniformLocation(is->shdr, "tex"), 0);
glUniform2i(glGetUniformLocation(is->shdr, "gScreenSize"), ctx->bitmap->width, ctx->bitmap->height);
/* Update GPU texture */
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, is->tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, ctx->bitmap->width, ctx->bitmap->height, 0, GL_RGB, GL_UNSIGNED_BYTE, ctx->bitmap->data);
/* Render quad */
glBindVertexArray(is->quad_vao);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindVertexArray(0);
/* Show rendered contents from the backbuffer */
window_swap_buffers(ctx->wnd);
}
int main(int argc, char** argv) {
init_core();
debug_message("[hunter] initialized core");
init_graphic();
debug_message("[hunter] initialized graphics, mode W%d H%d", window_get_width(global_get(global_get_singleton(), GLOBAL_WINDOW)), window_get_height(global_get(global_get_singleton(), GLOBAL_WINDOW)));
init_sound();
debug_message("[hunter] initialized sound");
init_systems();
debug_message("[hunter] initialized systems");
window* window_handle = global_get(global_get_singleton(), GLOBAL_WINDOW);
input* input_handle = global_get(global_get_singleton(), GLOBAL_INPUT);
syscontainer* syscontainer_handle = global_get(global_get_singleton(), GLOBAL_SYSCONTAINER);
text* text_handle = global_get(global_get_singleton(), GLOBAL_TEXT);
hl_render* hl_render_handle = global_get(global_get_singleton(), GLOBAL_HL_RENDER);
shader* shader_texture_handle = global_get(global_get_singleton(), GLOBAL_SHADER_TEXTURE);
camera* camera_handle = global_get(global_get_singleton(), GLOBAL_CAMERA);
debug_draw* debug_draw_handle = global_get(global_get_singleton(), GLOBAL_DEBUG_DRAW);
float delta_ref_point = time_get_elapsed(window_handle);
float delta_accumulator = 0.0f;
float delta_frame_time = 0.0f;
float fps_accumulator = 0.0f;
float fps_value = 0.0f;
float fps_value_last = fps_value;
unsigned int fps_counter = 0;
unsigned int game_kill_flag = 0;
debug_message("[hunter] posting init event to systems");
syscontainer_post_event(syscontainer_handle, EVENT_INIT);
while (!game_kill_flag) {
delta_frame_time = time_get_elapsed(window_handle) - delta_ref_point;
delta_ref_point = time_get_elapsed(window_handle);
window_update(window_handle);
input_state current_input_state;
input_get_input_state(input_handle, ¤t_input_state);
game_kill_flag |= window_get_should_close(window_handle);
game_kill_flag |= current_input_state.key_dev;
window_set_clear_color(window_handle, 1.0f, 0.0f, 1.0f, 0.0f);
debug_draw_clear(debug_draw_handle);
window_clear(window_handle);
delta_accumulator += delta_frame_time;
if (delta_accumulator < 0.0f) {
delta_accumulator = 0.0f;
}
while (delta_accumulator >= 1.0f / DELTA_REFERENCE_FPS) {
syscontainer_post_event(syscontainer_handle, EVENT_PRE_LOGIC);
syscontainer_post_event(syscontainer_handle, EVENT_LOGIC);
syscontainer_post_event(syscontainer_handle, EVENT_POST_LOGIC);
delta_accumulator -= 1.0f / DELTA_REFERENCE_FPS;
}
syscontainer_post_event(syscontainer_handle, EVENT_DRAW);
window_set_blend_mode(window_handle, WINDOW_BLEND_ALPHA);
debug_draw_render_all(debug_draw_handle);
hl_render_draw(hl_render_handle, shader_texture_handle, camera_handle);
hl_render_clear(hl_render_handle);
fps_counter++;
fps_accumulator += delta_frame_time;
if (fps_accumulator >= 1.0f) {
fps_value_last = fps_value;
fps_value = (float) fps_counter / fps_accumulator;
fps_counter = 0;
fps_accumulator = 0.0f;
}
text_batch fps_batch = {20, 20, 0.2f, 0.8f, 1.0f, 1.0f, "", "monospace", 12};
sprintf(fps_batch.text_data, "FPS : %3.2f (%3.2f)", fps_value, fps_value - fps_value_last);
text_submit_batch(text_handle, &fps_batch);
text_render_all(text_handle);
text_flush_batch(text_handle);
window_swap_buffers(window_handle);
}
debug_message("[hunter] posting destroy event to systems");
syscontainer_post_event(syscontainer_handle, EVENT_DESTROY);
free_systems();
free_sound();
free_graphic();
free_core();
h_free_all();
debug_message("[hunter] terminated cleanly");
return 0;
}
int main(void)
{
if(!glfwInit()) {
printf("Could not init GLFW");
getchar();
return -1;
}
glfwWindowHint(GLFW_SAMPLES, 4);
//Opengl 2.1
//glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
//glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 1);
//Opengl 3.3
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // MacOS fix
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
if(window_init(&window, 640, 480, "Test")) {
fprintf( stderr, "Failed to open window.\n" );
getchar();
glfwTerminate();
};
window_set_size_callback(&window, window_size_callback);
glewExperimental = GL_TRUE; // Needed for core profile
if (glewInit() != GLEW_OK) {
fprintf(stderr, "Failed to initialize GLEW\n");
getchar();
glfwTerminate();
return -1;
}
//#clear errors GLEW may trigger
printError();
glClearColor(0.0f, 0.0f, 0.4f, 0.0f);
GLuint VertexArrayID;
glGenVertexArrays(1, &VertexArrayID);
glBindVertexArray(VertexArrayID);
//Load model
//----------
Model cube;
model_init(&cube);
model_set_data_length(&cube, sizeof(cube_vertex_data));
model_set_vertices(&cube, cube_vertex_data);
model_set_colors(&cube, cube_color_data);
model_set_uv_map(&cube, cube_uv_data);
model_set_texture(&cube, "./textures/bricks.dds");
model_bind(&cube);
//Create shaders
//--------------
GLuint vertexShader, fragmentShader;
loadShader(&vertexShader, GL_VERTEX_SHADER, mvpVertexShaderSource);
loadShader(&fragmentShader, GL_FRAGMENT_SHADER, fragmentShaderSource);
//Create program
//--------------
GLuint program;
createProgram(&program, vertexShader, fragmentShader);
// Enable z-buffer
// ---------------
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
// Enable culling
// --------------
glEnable(GL_CULL_FACE);
// Get MVP uniform
// ---------------
GLuint mvp_ul = glGetUniformLocation(program, "MVP");
// Model Matrix
// ------------
Mat4 s;
scale_m4(&s, 0.1f, 0.1f, 0.1f);
printf("Scale:\n");
print_m4(&s);
Mat4 r;
rotate_m4(&r, 0.0f, 1.0f, 0.0f, 0.0f);
printf("Rotate:\n");
print_m4(&r);
Mat4 t;
translate_m4(&t, 0.0f, 0.0f, 0.0f);
printf("Translate:\n");
print_m4(&t);
Mat4 rs;
printf("Rotated*Scaled:\n");
mul_m4(&rs, &r, &s);
print_m4(&rs);
Mat4 model;
printf("Model:\n");
mul_m4(&model, &t, &rs);
print_m4(&model);
// Camera
// ------
Vec3 pos;
Vec3 center;
Vec3 up;
Vec3 direction;
Vec3 right;
camera_init(&camera);
camera_set_fov(&camera, 1.0f);
camera_set_aspect(&camera, (float)window.width/(float)window.height);
Input input;
input_init(&input, &window, 0.5f, 0.5f, 0.8f, -5.7f, -2.7f);
do {
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glUseProgram(program);
input_get_data(&input, &pos, &direction, &right);
add_v3(¢er, &pos, &direction);
cross_v3(&up, &direction, &right);
camera_set_position(&camera, &pos);
camera_set_center(&camera, ¢er);
camera_set_up(&camera, &up);
// Mvp Matrix
// ----------
Mat4 vp;
camera_get_matrix(&camera, &vp);
Mat4 mvp;
mul_m4(&mvp, &vp, &model);
printf("Perspective:\n");
print_m4(&mvp);
// Set MVP transform
glUniformMatrix4fv(mvp_ul, 1, GL_TRUE, &mvp[0][0]);
model_render(&cube);
window_swap_buffers(&window);
glfwPollEvents();
} while(
glfwGetKey(window.handle, GLFW_KEY_ESCAPE ) != GLFW_PRESS &&
glfwWindowShouldClose(window.handle) == 0
);
// Dispose
// -------
model_dispose(&cube);
glDeleteVertexArrays(1, &VertexArrayID);
glDetachShader(program, fragmentShader);
glDetachShader(program, vertexShader);
glDeleteShader(fragmentShader);
glDeleteShader(vertexShader);
glDeleteProgram(program);
glfwTerminate();
return 0;
}
