1 /* Copyright (C) 2021-2023 Harry Godden (hgn) - All Rights Reserved */
7 | | .---------------------------------------------------------.
8 |API| | vg_enter( int argc, char *argv[], const char *window_name |
9 | | '---------------------------------------------------------'
12 |IMP| vg_launch_opt(void) <--.
14 | | |'---------------'
16 | | |'-----------------------------------| 1 |------.
19 | | | |IMP| vg_preload(void)
22 | | | | |IMP| vg_load(void)
24 |IMP| | vg_framebuffer_resize(void) |
26 |IMP| | |.------------- vg_start(void) ---------------'
29 |IMP| | vg_pre_update(void)
32 | | | | | called 0x to 8x
34 |IMP| | '- vg_fixed_update(void)
39 |IMP| | vg_post_update(void)
42 |IMP| | vg_render(void)
55 const char *vg_get_basepath(void);
57 #include "vg_platform.h"
61 #include "dep/glad/glad.h"
62 #include "dep/sdl/include/SDL.h"
63 #include "vg_stdint.h"
65 void vg_register_exit( void( *funcptr
)(void), const char *name
);
74 //#define VG_SYNC_DEBUG
76 #define VG_SYNC_LOG(STR,...) \
77 vg_info(STR,SDL_GetThreadID(NULL),##__VA_ARGS__)
79 #define VG_SYNC_LOG(...)
83 static void vg_enter( int argc
, char *argv
[], const char *window_name
);
86 static void vg_preload(void);
87 static void vg_load(void);
90 static void vg_launch_opt(void);
91 static void vg_start(void);
93 static void vg_framebuffer_resize(int w
, int h
);
94 static void vg_pre_update(void);
95 static void vg_fixed_update(void);
96 static void vg_post_update(void);
98 static void vg_render(void);
99 static void vg_gui(void);
104 SDL_GLContext gl_context
;
105 const char *base_path
;
107 SDL_sem
*sem_loader
; /* allows only one loader at a time */
108 jmp_buf env_loader_exit
;
110 SDL_threadID thread_id_main
,
114 SDL_SpinLock sl_status
;
116 k_engine_status_none
,
117 k_engine_status_load_internal
,
118 k_engine_status_running
,
119 k_engine_status_crashed
123 /* Window information */
129 int display_refresh_rate
,
134 k_vsync_feature_disabled
=0,
135 k_vsync_feature_enabled
=1,
136 k_vsync_feature_enabled_adaptive
=2,
137 k_vsync_feature_error
=3
151 time_fixed_accumulator
,
152 time_fixed_extrapolate
,
155 u64 time_hp
, time_hp_last
, time_spinning
;
157 int fixed_iterations
;
161 k_engine_stage_update
,
162 k_engine_stage_update_fixed
,
163 k_engine_stage_rendering
,
170 enum quality_profile
{
171 k_quality_profile_high
= 0,
172 k_quality_profile_low
= 1,
181 static vg
= { .time_rate
= 1.0 };
182 const char *vg_get_basepath(void){
186 enum vg_thread_purpose
188 k_thread_purpose_nothing
,
189 k_thread_purpose_main
,
190 k_thread_purpose_loader
193 #include "vg_async.h"
195 static enum engine_status
_vg_engine_status(void)
197 SDL_AtomicLock( &vg
.sl_status
);
198 enum engine_status status
= vg
.engine_status
;
199 SDL_AtomicUnlock( &vg
.sl_status
);
204 static enum vg_thread_purpose
vg_thread_purpose(void)
206 SDL_AtomicLock( &vg
.sl_status
);
208 if( vg
.thread_id_main
== SDL_GetThreadID(NULL
) ){
209 SDL_AtomicUnlock( &vg
.sl_status
);
210 return k_thread_purpose_main
;
213 SDL_AtomicUnlock( &vg
.sl_status
);
214 return k_thread_purpose_loader
;
218 static void vg_assert_thread( enum vg_thread_purpose required
){
219 enum vg_thread_purpose purpose
= vg_thread_purpose();
221 if( purpose
!= required
){
222 vg_fatal_error( "thread_purpose must be %u not %u\n", required
, purpose
);
226 static void _vg_opengl_sync_init(void)
228 vg
.sem_loader
= SDL_CreateSemaphore(1);
231 static void vg_checkgl( const char *src_info
);
232 #define VG_STRINGIT( X ) #X
233 #define VG_CHECK_GL_ERR() vg_checkgl( __FILE__ ":L" VG_STRINGIT(__LINE__) )
235 #include "vg_console.h"
236 #include "vg_profiler.h"
238 #include "vg_audio.h"
240 #include "vg_shader.h"
242 #include "vg_input.h"
243 #include "vg_imgui.h"
244 #include "vg_lines.h"
245 #include "vg_loader.h"
249 static struct vg_profile vg_prof_update
= {.name
="update()"},
250 vg_prof_render
= {.name
="render()"},
251 vg_prof_swap
= {.name
="swap"};
253 static void vg_checkgl( const char *src_info
)
258 while( (err
= glGetError()) != GL_NO_ERROR
){
259 vg_error( "(%s) OpenGL Error: #%d\n", src_info
, err
);
264 vg_fatal_error( "OpenGL Error" );
267 static void async_vg_bake_shaders( void *payload
, u32 size
)
269 vg_shaders_compile();
272 static void vg_bake_shaders(void)
274 vg_console_reg_cmd( "reload_shaders", vg_shaders_live_recompile
, NULL
);
275 vg_async_call( async_vg_bake_shaders
, NULL
, 0 );
278 void async_internal_complete( void *payload
, u32 size
)
280 vg_success( "Internal async setup complete\n" );
281 SDL_AtomicLock( &vg
.sl_status
);
283 if( vg
.engine_status
== k_engine_status_crashed
){
284 SDL_AtomicUnlock( &vg
.sl_status
);
288 vg
.engine_status
= k_engine_status_running
;
291 SDL_AtomicUnlock( &vg
.sl_status
);
294 static void _vg_load_full( void *data
){
296 vg_tex2d_replace_with_error( &vg
.tex_missing
);
297 vg_ui
.tex_bg
= vg
.tex_missing
;
300 vg_loader_step( vg_input_init
, vg_input_free
);
301 vg_loader_step( vg_lines_init
, NULL
);
303 vg_loader_step( vg_audio_init
, vg_audio_free
);
305 vg_loader_step( vg_profiler_init
, NULL
);
307 vg_async_call( async_internal_complete
, NULL
, 0 );
312 vg_success( "Client loaded in %fs\n", vg
.time_real
);
315 static void _vg_process_events(void)
317 v2_zero( vg
.mouse_wheel
);
318 v2_zero( vg
.mouse_delta
);
325 while( SDL_PollEvent( &event
) ){
326 if( event
.type
== SDL_KEYDOWN
){
327 if( vg_console
.enabled
&&
328 (vg_ui
.focused_control_type
!= k_ui_control_modal
) ){
329 if( event
.key
.keysym
.sym
== SDLK_ESCAPE
||
330 event
.key
.keysym
.scancode
== SDL_SCANCODE_GRAVE
){
331 vg_console
.enabled
= 0;
334 else if( (event
.key
.keysym
.mod
& KMOD_CTRL
) &&
335 event
.key
.keysym
.sym
== SDLK_n
){
336 _console_suggest_next();
338 else if( (event
.key
.keysym
.mod
& KMOD_CTRL
) &&
339 event
.key
.keysym
.sym
== SDLK_p
){
340 _console_suggest_prev();
343 _ui_proc_key( event
.key
.keysym
);
347 if( event
.key
.keysym
.scancode
== SDL_SCANCODE_GRAVE
){
348 vg_console
.enabled
= 1;
351 _ui_proc_key( event
.key
.keysym
);
355 else if( event
.type
== SDL_MOUSEWHEEL
){
356 vg
.mouse_wheel
[0] += event
.wheel
.preciseX
;
357 vg
.mouse_wheel
[1] += event
.wheel
.preciseY
;
359 else if( event
.type
== SDL_CONTROLLERDEVICEADDED
||
360 event
.type
== SDL_CONTROLLERDEVICEREMOVED
)
362 vg_input_device_event( &event
);
364 else if( event
.type
== SDL_CONTROLLERAXISMOTION
||
365 event
.type
== SDL_CONTROLLERBUTTONDOWN
||
366 event
.type
== SDL_CONTROLLERBUTTONUP
)
368 vg_input_controller_event( &event
);
370 else if( event
.type
== SDL_MOUSEMOTION
){
371 vg
.mouse_delta
[0] += event
.motion
.xrel
;
372 vg
.mouse_delta
[1] += event
.motion
.yrel
;
374 else if( event
.type
== SDL_WINDOWEVENT
){
375 if( event
.window
.event
== SDL_WINDOWEVENT_SIZE_CHANGED
){
377 SDL_GL_GetDrawableSize( vg
.window
, &w
, &h
);
380 vg_warn( "Got a invalid framebuffer size: "
381 "%dx%d... ignoring\n", w
, h
);
387 vg_framebuffer_resize(w
,h
);
390 else if( event
.window
.event
== SDL_WINDOWEVENT_CLOSE
){
391 vg
.window_should_close
= 1;
394 else if( event
.type
== SDL_TEXTINPUT
){
395 ui_proc_utf8( event
.text
.text
);
399 vg
.mouse_pos
[0] += vg
.mouse_delta
[0];
400 vg
.mouse_pos
[1] += vg
.mouse_delta
[1];
403 static void _vg_gameloop_update(void)
405 vg_profile_begin( &vg_prof_update
);
407 vg
.engine_stage
= k_engine_stage_update
;
410 /* Fixed update loop */
411 vg
.engine_stage
= k_engine_stage_update_fixed
;
413 vg
.fixed_iterations
= 0;
414 vg_lines
.allow_input
= 1;
415 vg
.time_fixed_accumulator
+= vg
.time_delta
;
417 while( vg
.time_fixed_accumulator
>= VG_TIMESTEP_FIXED
){
419 vg_lines
.allow_input
= 0;
420 vg
.time_fixed_accumulator
-= VG_TIMESTEP_FIXED
;
422 vg
.fixed_iterations
++;
423 if( vg
.fixed_iterations
== 8 ){
427 vg_lines
.allow_input
= 1;
428 vg
.time_fixed_extrapolate
= vg
.time_fixed_accumulator
/ VG_TIMESTEP_FIXED
;
430 vg
.engine_stage
= k_engine_stage_update
;
432 vg_profile_end( &vg_prof_update
);
435 static void _vg_gameloop_render(void)
437 vg_profile_begin( &vg_prof_render
);
440 vg
.engine_stage
= k_engine_stage_rendering
;
444 vg
.engine_stage
= k_engine_stage_ui
;
447 if( vg_console
.enabled
){
448 vg_ui
.ignore_input_frames
= 10;
450 vg_ui
.ignore_input_frames
= 0;
451 vg_ui
.wants_mouse
= 1;
458 audio_debug_ui( vg
.pv
);
462 int frame_target
= vg
.display_refresh_rate
;
463 if( vg
.fps_limit
> 0 ) frame_target
= vg
.fps_limit
;
465 (struct vg_profile
*[]){
466 &vg_prof_update
,&vg_prof_render
,&vg_prof_swap
}, 3,
467 (1.0f
/(float)frame_target
)*1000.0f
,
468 (ui_rect
){ 4, 4, 250, 0 }, 0
475 "refresh: %d (%.1fms)\n"
477 "iterations: %d (acc: %.3fms%%)\n"
478 "time: real(%.2f) delta(%.2f) rate(%.2f)\n"
479 " extrap(%.2f) frame(%.2f) spin( "PRINTF_U64
" )\n",
480 vg
.window_x
, vg
.window_y
,
481 frame_target
, (1.0f
/(float)frame_target
)*1000.0f
,
484 (vg
.time_fixed_accumulator
/VG_TIMESTEP_FIXED
)*100.0f
,
485 vg
.time_real
, vg
.time_delta
, vg
.time_rate
,
486 vg
.time_fixed_extrapolate
, vg
.time_frame_delta
,
489 ui_text( (ui_rect
){258, 4+24+12+12,900,900},perf
,1,0,k_ui_align_left
);
494 vg_profile_end( &vg_prof_render
);
497 static void vg_changevsync(void){
498 if( vg
.vsync
&& (vg
.vsync_feature
!= k_vsync_feature_error
) ){
499 /* turn on vsync if not enabled */
501 enum vsync_feature requested
= k_vsync_feature_enabled
;
502 if( vg
.vsync
< 0 ) requested
= k_vsync_feature_enabled_adaptive
;
504 if( vg
.vsync_feature
!= requested
){
505 vg_info( "Setting swap interval\n" );
507 int swap_interval
= 1;
508 if( requested
== k_vsync_feature_enabled_adaptive
)
511 if( SDL_GL_SetSwapInterval( swap_interval
) == -1 ){
512 if( requested
== k_vsync_feature_enabled
){
513 vg_error( "Vsync is not supported by your system\n" );
514 vg_warn( "You may be overriding it in your"
515 " graphics control panel.\n" );
518 vg_error( "Adaptive Vsync is not supported by your system\n" );
521 vg
.vsync_feature
= k_vsync_feature_error
;
523 /* TODO: Make popup to notify user that this happened */
526 vg_success( "Vsync enabled (%d)\n", requested
);
527 vg
.vsync_feature
= requested
;
532 if( vg
.vsync_feature
!= k_vsync_feature_disabled
){
533 SDL_GL_SetSwapInterval( 0 );
534 vg
.vsync_feature
= k_vsync_feature_disabled
;
539 static int vg_framefilter( double dt
){
540 if( vg
.fps_limit
< 25 ) vg
.fps_limit
= 25;
541 if( vg
.fps_limit
> 300 ) vg
.fps_limit
= 300;
543 double min_frametime
= 1.0/(double)vg
.fps_limit
;
544 if( vg
.time_frame_delta
< min_frametime
){
545 /* TODO: we can use high res nanosleep on Linux here */
546 double sleep_ms
= (min_frametime
-vg
.time_frame_delta
) * 1000.0;
547 u32 ms
= (u32
)floor( sleep_ms
);
550 if( !vg_loader_availible() )
565 static int _vg_crashscreen(void)
568 if( vg_getkey( SDLK_ESCAPE
) )
572 glBindFramebuffer( GL_FRAMEBUFFER
, 0 );
574 glDisable(GL_DEPTH_TEST
);
575 glBlendFunc(GL_ONE_MINUS_DST_ALPHA
, GL_DST_ALPHA
);
576 glBlendEquation(GL_FUNC_ADD
);
578 glClearColor( 0.15f
+ sinf(vg
.time_real
)*0.1f
, 0.0f
, 0.0f
,1.0f
);
579 glClear( GL_COLOR_BUFFER_BIT
);
580 glViewport( 0,0, vg
.window_x
, vg
.window_y
);
587 static void _vg_gameloop(void){
588 //vg.time_fixed_accumulator = 0.75f * (1.0f/60.0f);
590 vg
.time_hp
= SDL_GetPerformanceCounter();
591 vg
.time_hp_last
= vg
.time_hp
;
595 vg
.time_hp
= SDL_GetPerformanceCounter();
596 u64 udt
= vg
.time_hp
- vg
.time_hp_last
;
597 vg
.time_hp_last
= vg
.time_hp
;
599 double dt
= (double)udt
/ (double)SDL_GetPerformanceFrequency();
601 vg
.time_frame_delta
+= dt
;
602 vg_run_async_checked();
604 if( vg_framefilter( dt
) )
609 vg_profile_begin( &vg_prof_swap
);
610 SDL_GL_SwapWindow( vg
.window
);
611 vg_profile_end( &vg_prof_swap
);
613 enum engine_status status
= _vg_engine_status();
615 vg
.time_real
+= vg
.time_frame_delta
;
616 vg
.time_delta
= vg
.time_frame_delta
* vg
.time_rate
;
617 vg
.time
+= vg
.time_delta
;
619 _vg_process_events();
621 if( vg
.window_should_close
)
624 if( status
== k_engine_status_crashed
){
625 if( _vg_crashscreen() )
629 if( status
== k_engine_status_running
){
630 _vg_gameloop_update();
631 _vg_gameloop_render();
638 if( vg
.loader_ring
> 0.01f
){
639 _vg_loader_render_ring( vg
.loader_ring
);
640 vg
.loader_ring
-= vg
.time_frame_delta
* 0.5f
;
643 vg
.time_frame_delta
= 0.0;
644 vg
.time_spinning
= 0;
648 static void _vg_process_launch_opts_internal( int argc
, char *argv
[] )
651 while( vg_argp( argc
, argv
) ){
652 if( (arg
= vg_opt_arg( 'w' )) ){
653 vg
.window_x
= atoi( arg
);
656 if( (arg
= vg_opt_arg( 'h' )) ){
657 vg
.window_y
= atoi( arg
);
660 if( (arg
= vg_long_opt_arg( "samples" )) ){
661 vg
.samples
= VG_MAX( 0, VG_MIN( 8, atoi( arg
) ) );
664 if( vg_long_opt( "use-libc-malloc" ) ){
665 vg_mem
.use_libc_malloc
= 1;
668 if( vg_long_opt( "high-performance" ) ){
669 vg
.quality_profile
= k_quality_profile_low
;
676 static void _vg_init_window( const char *window_name
)
678 vg_info( "SDL_INIT\n" );
680 if( SDL_Init( SDL_INIT_VIDEO
) != 0 ){
681 vg_error( "SDL_Init failed: %s\n", SDL_GetError() );
686 SDL_InitSubSystem( SDL_INIT_AUDIO
);
688 SDL_InitSubSystem( SDL_INIT_GAMECONTROLLER
);
690 char *exe_basepath
= SDL_GetBasePath();
691 u32 len
= vg_align8( strlen(exe_basepath
)+1 );
692 char *dest
= vg_linear_alloc( vg_mem
.rtmemory
, len
);
693 strcpy( dest
, exe_basepath
);
694 SDL_free( exe_basepath
);
697 vg_info( "Basepath: %s\n", vg
.base_path
);
699 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER
, 1 );
700 SDL_GL_SetAttribute( SDL_GL_CONTEXT_MAJOR_VERSION
, 3 );
701 SDL_GL_SetAttribute( SDL_GL_CONTEXT_MINOR_VERSION
, 3 );
702 SDL_GL_SetAttribute( SDL_GL_CONTEXT_PROFILE_MASK
,
703 SDL_GL_CONTEXT_PROFILE_CORE
);
705 SDL_GL_SetAttribute( SDL_GL_CONTEXT_RELEASE_BEHAVIOR
,
706 SDL_GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH
);
708 SDL_GL_SetAttribute( SDL_GL_RED_SIZE
, 8 );
709 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE
, 8 );
710 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE
, 8 );
711 SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE
, 8 );
712 SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE
, 0 );
715 * Get monitor information
717 vg_info( "Getting display count\n" );
718 int display_count
= 0,
722 SDL_DisplayMode video_mode
;
723 if( SDL_GetDesktopDisplayMode( display_index
, &video_mode
) ){
724 vg_error( "SDL_GetDesktopDisplayMode failed: %s\n", SDL_GetError() );
729 vg
.display_refresh_rate
= video_mode
.refresh_rate
;
730 vg
.window_x
= video_mode
.w
;
731 vg
.window_y
= video_mode
.h
;
739 SDL_SetHint( "SDL_VIDEO_X11_XINERAMA", "1" );
740 SDL_SetHint( "SDL_VIDEO_X11_XRANDR", "0" );
741 SDL_SetHint( "SDL_VIDEO_X11_XVIDMODE", "0" );
744 vg_info( "CreateWindow( %d %d @%dhz )\n", vg
.window_x
, vg
.window_y
,
745 vg
.display_refresh_rate
);
747 /* TODO: Allow selecting closest video mode from launch opts */
748 if((vg
.window
= SDL_CreateWindow( window_name
,
751 0, 0, vg
.window_x
, vg
.window_y
,
752 SDL_WINDOW_BORDERLESS
|SDL_WINDOW_OPENGL
|SDL_WINDOW_INPUT_GRABBED
754 SDL_SetWindowPosition( vg
.window
, video_mode
.w
-vg
.window_x
, 0 );
758 vg
.window_x
, vg
.window_y
,
760 SDL_WINDOW_FULLSCREEN_DESKTOP
|
762 SDL_WINDOW_INPUT_GRABBED
765 if( SDL_SetWindowDisplayMode( vg
.window
, &video_mode
) ){
766 vg_error( "SDL_SetWindowDisplayMode failed: %s", SDL_GetError() );
773 vg_error( "SDL_CreateWindow failed: %s", SDL_GetError() );
777 SDL_RaiseWindow( vg
.window
);
779 vg_info( "CreateContext\n" );
782 if( SDL_IsTextInputActive() ) SDL_StopTextInput();
787 if( (vg
.gl_context
= SDL_GL_CreateContext(vg
.window
) )){
788 SDL_GL_GetDrawableSize( vg
.window
, &vg
.window_x
, &vg
.window_y
);
789 vg_success( "Window created (%dx%d)\n", vg
.window_x
, vg
.window_y
);
792 vg_error( "SDL_GL_CreateContext failed: %s\n", SDL_GetError() );
797 if( !gladLoadGLLoader((GLADloadproc
)SDL_GL_GetProcAddress
) ) {
798 vg_error( "Glad Failed to initialize\n" );
799 SDL_GL_DeleteContext( vg
.gl_context
);
804 const unsigned char* glver
= glGetString( GL_VERSION
);
805 vg_success( "Load setup complete, OpenGL version: %s\n", glver
);
807 SDL_GL_SetSwapInterval(0); /* disable vsync while loading */
809 SDL_DisplayMode dispmode
;
810 if( !SDL_GetWindowDisplayMode( vg
.window
, &dispmode
) ){
811 if( dispmode
.refresh_rate
){
812 vg
.display_refresh_rate
= dispmode
.refresh_rate
;
816 if( vg
.display_refresh_rate
< 25 || vg
.display_refresh_rate
> 300 ){
817 vg
.display_refresh_rate
= 60;
820 vg_info( "Display refresh rate: %d\n", dispmode
.refresh_rate
);
821 vg
.fps_limit
= vg
.display_refresh_rate
;
823 #if defined(_WIN32) || defined(VG_DEVWINDOW)
829 static void _vg_terminate(void)
832 _vg_console_write_persistent();
834 SDL_AtomicLock( &vg
.sl_status
);
835 vg
.engine_status
= k_engine_status_none
;
836 SDL_AtomicUnlock( &vg
.sl_status
);
840 vg_success( "If you see this it means everything went.. \"well\".....\n" );
842 SDL_GL_DeleteContext( vg
.gl_context
);
847 static void vg_enter( int argc
, char *argv
[], const char *window_name
){
848 vg_rand_seed( &vg
.rand
, 461 );
849 _vg_process_launch_opts_internal( argc
, argv
);
855 vg_console_reg_var( "fps_limit", &vg
.fps_limit
, k_var_dtype_i32
, 0 );
856 vg_console_reg_var( "vsync", &vg
.vsync
, k_var_dtype_i32
, VG_VAR_PERSISTENT
);
857 _vg_init_window( window_name
);
860 SDL_SetRelativeMouseMode(1);
862 vg
.thread_id_main
= SDL_GetThreadID(NULL
);
864 /* Opengl-required systems */
868 vg
.engine_status
= k_engine_status_load_internal
;
870 _vg_opengl_sync_init();
871 vg_loader_start( _vg_load_full
, NULL
);
876 static void vg_fatal_error( const char *fmt
, ... )
879 va_start( args
, fmt
);
880 _vg_logx_va( stderr
, NULL
, "fatal", KRED
, fmt
, args
);
883 vg_print_backtrace();
885 SDL_AtomicLock( &vg
.sl_status
);
886 vg
.engine_status
= k_engine_status_crashed
;
887 SDL_AtomicUnlock( &vg
.sl_status
);
889 if( vg_thread_purpose() == k_thread_purpose_loader
){
890 longjmp( vg
.env_loader_exit
, 1 );
893 vg_error( "There is no jump to the error runner thing yet! bai bai\n" );
901 static void vg_fatal_error( const char *fmt
, ... )
904 va_start( args
, fmt
);
905 _vg_logx_va( stderr
, NULL
, "fatal", KRED
, fmt
, args
);
913 * Graphic cards will check these to force it to use the GPU
915 u32 NvOptimusEnablement
= 0x00000001;
916 int AmdPowerXpressRequestHighPerformance
= 1;
920 #endif /* VG_HEADER_H */