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
,
130 fps_limit
; /* 0: use vsync, >0: cap fps to this, no vsync */
133 k_vsync_feature_disabled
=0,
134 k_vsync_feature_enabled
=1,
135 k_vsync_feature_enabled_adaptive
=2,
136 k_vsync_feature_error
=3
150 time_fixed_accumulator
,
151 time_fixed_extrapolate
,
154 u64 time_hp
, time_hp_last
, time_spinning
;
156 int fixed_iterations
;
160 k_engine_stage_update
,
161 k_engine_stage_update_fixed
,
162 k_engine_stage_rendering
,
169 enum quality_profile
{
170 k_quality_profile_high
= 0,
171 k_quality_profile_low
= 1,
178 static vg
= { .time_rate
= 1.0 };
179 const char *vg_get_basepath(void){
183 enum vg_thread_purpose
185 k_thread_purpose_nothing
,
186 k_thread_purpose_main
,
187 k_thread_purpose_loader
190 #include "vg_async.h"
192 static enum engine_status
_vg_engine_status(void)
194 SDL_AtomicLock( &vg
.sl_status
);
195 enum engine_status status
= vg
.engine_status
;
196 SDL_AtomicUnlock( &vg
.sl_status
);
201 static enum vg_thread_purpose
vg_thread_purpose(void)
203 SDL_AtomicLock( &vg
.sl_status
);
205 if( vg
.thread_id_main
== SDL_GetThreadID(NULL
) ){
206 SDL_AtomicUnlock( &vg
.sl_status
);
207 return k_thread_purpose_main
;
210 SDL_AtomicUnlock( &vg
.sl_status
);
211 return k_thread_purpose_loader
;
215 static void vg_assert_thread( enum vg_thread_purpose required
){
216 enum vg_thread_purpose purpose
= vg_thread_purpose();
218 if( purpose
!= required
){
219 vg_fatal_error( "thread_purpose must be %u not %u\n", required
, purpose
);
223 static void _vg_opengl_sync_init(void)
225 vg
.sem_loader
= SDL_CreateSemaphore(1);
228 static void vg_checkgl( const char *src_info
);
229 #define VG_STRINGIT( X ) #X
230 #define VG_CHECK_GL_ERR() vg_checkgl( __FILE__ ":L" VG_STRINGIT(__LINE__) )
232 #include "vg_console.h"
233 #include "vg_profiler.h"
235 #include "vg_audio.h"
237 #include "vg_shader.h"
239 #include "vg_input.h"
240 #include "vg_imgui.h"
241 #include "vg_lines.h"
242 #include "vg_loader.h"
246 static struct vg_profile vg_prof_update
= {.name
="update()"},
247 vg_prof_render
= {.name
="render()"},
248 vg_prof_swap
= {.name
="swap"};
250 static void vg_checkgl( const char *src_info
)
255 while( (err
= glGetError()) != GL_NO_ERROR
){
256 vg_error( "(%s) OpenGL Error: #%d\n", src_info
, err
);
261 vg_fatal_error( "OpenGL Error" );
264 static void async_vg_bake_shaders( void *payload
, u32 size
)
266 vg_shaders_compile();
269 static void vg_bake_shaders(void)
271 vg_console_reg_cmd( "reload_shaders", vg_shaders_live_recompile
, NULL
);
272 vg_async_call( async_vg_bake_shaders
, NULL
, 0 );
275 void async_internal_complete( void *payload
, u32 size
)
277 vg_success( "Internal async setup complete\n" );
278 SDL_AtomicLock( &vg
.sl_status
);
280 if( vg
.engine_status
== k_engine_status_crashed
){
281 SDL_AtomicUnlock( &vg
.sl_status
);
285 vg
.engine_status
= k_engine_status_running
;
288 SDL_AtomicUnlock( &vg
.sl_status
);
291 static void _vg_load_full( void *data
)
296 vg_tex2d_replace_with_error( &vg
.tex_missing
);
297 vg_loader_step( vg_input_init
, vg_input_free
);
298 vg_loader_step( vg_lines_init
, NULL
);
300 vg_loader_step( vg_audio_init
, vg_audio_free
);
302 vg_loader_step( vg_profiler_init
, NULL
);
304 vg_async_call( async_internal_complete
, NULL
, 0 );
310 static void _vg_process_events(void)
312 v2_zero( vg
.mouse_wheel
);
313 v2_zero( vg
.mouse_delta
);
320 while( SDL_PollEvent( &event
) ){
321 if( event
.type
== SDL_KEYDOWN
){
322 if( vg_console
.enabled
&&
323 (vg_ui
.focused_control_type
!= k_ui_control_modal
) ){
324 if( event
.key
.keysym
.sym
== SDLK_ESCAPE
||
325 event
.key
.keysym
.scancode
== SDL_SCANCODE_GRAVE
){
326 vg_console
.enabled
= 0;
329 else if( (event
.key
.keysym
.mod
& KMOD_CTRL
) &&
330 event
.key
.keysym
.sym
== SDLK_n
){
331 _console_suggest_next();
333 else if( (event
.key
.keysym
.mod
& KMOD_CTRL
) &&
334 event
.key
.keysym
.sym
== SDLK_p
){
335 _console_suggest_prev();
338 _ui_proc_key( event
.key
.keysym
);
342 if( event
.key
.keysym
.scancode
== SDL_SCANCODE_GRAVE
){
343 vg_console
.enabled
= 1;
346 _ui_proc_key( event
.key
.keysym
);
350 else if( event
.type
== SDL_MOUSEWHEEL
){
351 vg
.mouse_wheel
[0] += event
.wheel
.preciseX
;
352 vg
.mouse_wheel
[1] += event
.wheel
.preciseY
;
354 else if( event
.type
== SDL_CONTROLLERDEVICEADDED
||
355 event
.type
== SDL_CONTROLLERDEVICEREMOVED
)
357 vg_input_device_event( &event
);
359 else if( event
.type
== SDL_CONTROLLERAXISMOTION
||
360 event
.type
== SDL_CONTROLLERBUTTONDOWN
||
361 event
.type
== SDL_CONTROLLERBUTTONUP
)
363 vg_input_controller_event( &event
);
365 else if( event
.type
== SDL_MOUSEMOTION
){
366 vg
.mouse_delta
[0] += event
.motion
.xrel
;
367 vg
.mouse_delta
[1] += event
.motion
.yrel
;
369 else if( event
.type
== SDL_WINDOWEVENT
){
370 if( event
.window
.event
== SDL_WINDOWEVENT_SIZE_CHANGED
){
372 SDL_GL_GetDrawableSize( vg
.window
, &w
, &h
);
375 vg_warn( "Got a invalid framebuffer size: "
376 "%dx%d... ignoring\n", w
, h
);
382 vg_framebuffer_resize(w
,h
);
385 else if( event
.window
.event
== SDL_WINDOWEVENT_CLOSE
){
386 vg
.window_should_close
= 1;
389 else if( event
.type
== SDL_TEXTINPUT
){
390 ui_proc_utf8( event
.text
.text
);
394 vg
.mouse_pos
[0] += vg
.mouse_delta
[0];
395 vg
.mouse_pos
[1] += vg
.mouse_delta
[1];
398 static void _vg_gameloop_update(void)
400 vg_profile_begin( &vg_prof_update
);
402 vg
.engine_stage
= k_engine_stage_update
;
405 /* Fixed update loop */
406 vg
.engine_stage
= k_engine_stage_update_fixed
;
408 vg
.fixed_iterations
= 0;
409 vg_lines
.allow_input
= 1;
410 vg
.time_fixed_accumulator
+= vg
.time_delta
;
412 while( vg
.time_fixed_accumulator
>= VG_TIMESTEP_FIXED
){
414 vg_lines
.allow_input
= 0;
415 vg
.time_fixed_accumulator
-= VG_TIMESTEP_FIXED
;
417 vg
.fixed_iterations
++;
418 if( vg
.fixed_iterations
== 8 ){
422 vg_lines
.allow_input
= 1;
423 vg
.time_fixed_extrapolate
= vg
.time_fixed_accumulator
/ VG_TIMESTEP_FIXED
;
425 vg
.engine_stage
= k_engine_stage_update
;
427 vg_profile_end( &vg_prof_update
);
430 static void _vg_gameloop_render(void)
432 vg_profile_begin( &vg_prof_render
);
435 vg
.engine_stage
= k_engine_stage_rendering
;
439 vg
.engine_stage
= k_engine_stage_ui
;
442 if( vg_console
.enabled
){
443 vg_ui
.ignore_input_frames
= 10;
445 vg_ui
.ignore_input_frames
= 0;
446 vg_ui
.wants_mouse
= 1;
453 audio_debug_ui( vg
.pv
);
457 int frame_target
= vg
.display_refresh_rate
;
458 if( vg
.fps_limit
> 0 ) frame_target
= vg
.fps_limit
;
460 (struct vg_profile
*[]){
461 &vg_prof_update
,&vg_prof_render
,&vg_prof_swap
}, 3,
462 (1.0f
/(float)frame_target
)*1000.0f
,
463 (ui_rect
){ 4, 4, 250, 0 }, 0
470 "refresh: %d (%.1fms)\n"
472 "iterations: %d (acc: %.3fms%%)\n"
473 "time: real(%.2f) delta(%.2f) rate(%.2f)\n"
474 " extrap(%.2f) frame(%.2f) spin( "PRINTF_U64
" )\n",
475 vg
.window_x
, vg
.window_y
,
476 frame_target
, (1.0f
/(float)frame_target
)*1000.0f
,
479 (vg
.time_fixed_accumulator
/VG_TIMESTEP_FIXED
)*100.0f
,
480 vg
.time_real
, vg
.time_delta
, vg
.time_rate
,
481 vg
.time_fixed_extrapolate
, vg
.time_frame_delta
,
484 ui_text( (ui_rect
){258, 4+24+12+12,900,900},perf
,1,0,k_ui_align_left
);
489 vg_profile_end( &vg_prof_render
);
492 static int vg_framefilter( double dt
)
494 if( (vg
.fps_limit
<= 0) && (vg
.vsync_feature
!= k_vsync_feature_error
) ){
495 /* turn on vsync if not enabled */
497 enum vsync_feature requested
= k_vsync_feature_enabled
;
498 if( vg
.fps_limit
< 0 ) requested
= k_vsync_feature_enabled_adaptive
;
500 if( vg
.vsync_feature
!= requested
){
501 vg_info( "Setting swap interval\n" );
503 int swap_interval
= 1;
504 if( requested
== k_vsync_feature_enabled_adaptive
) swap_interval
= -1;
506 if( SDL_GL_SetSwapInterval( swap_interval
) == -1 ){
507 if( requested
== k_vsync_feature_enabled
){
508 vg_error( "Vsync is not supported by your system\n" );
509 vg_warn( "You may be overriding it in your"
510 " graphics control panel.\n" );
513 vg_error( "Adaptive Vsync is not supported by your system\n" );
516 vg
.vsync_feature
= k_vsync_feature_error
;
517 vg
.fps_limit
= vg
.display_refresh_rate
;
519 /* TODO: Make popup to notify user that this happened */
523 vg_success( "Vsync enabled (%d)\n", requested
);
524 vg
.vsync_feature
= requested
;
531 if( vg
.vsync_feature
!= k_vsync_feature_disabled
){
532 SDL_GL_SetSwapInterval( 0 );
533 vg
.vsync_feature
= k_vsync_feature_disabled
;
536 if( vg
.fps_limit
< 25 ) vg
.fps_limit
= 25;
537 if( vg
.fps_limit
> 300 ) vg
.fps_limit
= 300;
539 double min_frametime
= 1.0/(double)vg
.fps_limit
;
540 if( vg
.time_frame_delta
< min_frametime
){
541 /* TODO: we can use high res nanosleep on Linux here */
542 double sleep_ms
= (min_frametime
-vg
.time_frame_delta
) * 1000.0;
543 u32 ms
= (u32
)floor( sleep_ms
);
558 static int _vg_crashscreen(void)
561 if( vg_getkey( SDLK_ESCAPE
) )
565 glBindFramebuffer( GL_FRAMEBUFFER
, 0 );
567 glDisable(GL_DEPTH_TEST
);
568 glBlendFunc(GL_ONE_MINUS_DST_ALPHA
, GL_DST_ALPHA
);
569 glBlendEquation(GL_FUNC_ADD
);
571 glClearColor( 0.15f
+ sinf(vg
.time_real
)*0.1f
, 0.0f
, 0.0f
,1.0f
);
572 glClear( GL_COLOR_BUFFER_BIT
);
573 glViewport( 0,0, vg
.window_x
, vg
.window_y
);
580 static void _vg_gameloop(void){
581 //vg.time_fixed_accumulator = 0.75f * (1.0f/60.0f);
583 vg
.time_hp
= SDL_GetPerformanceCounter();
584 vg
.time_hp_last
= vg
.time_hp
;
589 vg
.time_hp
= SDL_GetPerformanceCounter();
590 u64 udt
= vg
.time_hp
- vg
.time_hp_last
;
591 vg
.time_hp_last
= vg
.time_hp
;
593 double dt
= (double)udt
/ (double)SDL_GetPerformanceFrequency();
595 vg
.time_frame_delta
+= dt
;
597 if( vg_framefilter( dt
) )
600 vg_profile_begin( &vg_prof_swap
);
601 SDL_GL_SwapWindow( vg
.window
);
602 vg_profile_end( &vg_prof_swap
);
604 enum engine_status status
= _vg_engine_status();
606 vg
.time_real
+= vg
.time_frame_delta
;
607 vg
.time_delta
= vg
.time_frame_delta
* vg
.time_rate
;
608 vg
.time
+= vg
.time_delta
;
610 vg_run_async_checked();
611 _vg_process_events();
613 if( vg
.window_should_close
)
616 if( status
== k_engine_status_crashed
){
617 if( _vg_crashscreen() )
621 if( status
== k_engine_status_running
){
622 _vg_gameloop_update();
623 _vg_gameloop_render();
630 if( vg
.loader_ring
> 0.01f
){
631 _vg_loader_render_ring( vg
.loader_ring
);
632 vg
.loader_ring
-= vg
.time_frame_delta
* 0.5f
;
635 vg
.time_frame_delta
= 0.0;
636 vg
.time_spinning
= 0;
640 static void _vg_process_launch_opts_internal( int argc
, char *argv
[] )
643 while( vg_argp( argc
, argv
) ){
644 if( (arg
= vg_opt_arg( 'w' )) ){
645 vg
.window_x
= atoi( arg
);
648 if( (arg
= vg_opt_arg( 'h' )) ){
649 vg
.window_y
= atoi( arg
);
652 if( (arg
= vg_long_opt_arg( "samples" )) ){
653 vg
.samples
= VG_MAX( 0, VG_MIN( 8, atoi( arg
) ) );
656 if( vg_long_opt( "use-libc-malloc" ) ){
657 vg_mem
.use_libc_malloc
= 1;
660 if( vg_long_opt( "high-performance" ) ){
661 vg
.quality_profile
= k_quality_profile_low
;
668 static void _vg_init_window( const char *window_name
)
670 vg_info( "SDL_INIT\n" );
672 if( SDL_Init( SDL_INIT_VIDEO
) != 0 ){
673 vg_error( "SDL_Init failed: %s\n", SDL_GetError() );
678 SDL_InitSubSystem( SDL_INIT_AUDIO
);
680 SDL_InitSubSystem( SDL_INIT_GAMECONTROLLER
);
682 char *exe_basepath
= SDL_GetBasePath();
683 u32 len
= vg_align8( strlen(exe_basepath
)+1 );
684 char *dest
= vg_linear_alloc( vg_mem
.rtmemory
, len
);
685 strcpy( dest
, exe_basepath
);
686 SDL_free( exe_basepath
);
689 vg_info( "Basepath: %s\n", vg
.base_path
);
691 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER
, 1 );
692 SDL_GL_SetAttribute( SDL_GL_CONTEXT_MAJOR_VERSION
, 3 );
693 SDL_GL_SetAttribute( SDL_GL_CONTEXT_MINOR_VERSION
, 3 );
694 SDL_GL_SetAttribute( SDL_GL_CONTEXT_PROFILE_MASK
,
695 SDL_GL_CONTEXT_PROFILE_CORE
);
697 SDL_GL_SetAttribute( SDL_GL_CONTEXT_RELEASE_BEHAVIOR
,
698 SDL_GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH
);
700 SDL_GL_SetAttribute( SDL_GL_RED_SIZE
, 8 );
701 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE
, 8 );
702 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE
, 8 );
703 SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE
, 8 );
704 SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE
, 0 );
707 * Get monitor information
709 vg_info( "Getting display count\n" );
710 int display_count
= 0,
714 SDL_DisplayMode video_mode
;
715 if( SDL_GetDesktopDisplayMode( display_index
, &video_mode
) ){
716 vg_error( "SDL_GetDesktopDisplayMode failed: %s\n", SDL_GetError() );
721 vg
.display_refresh_rate
= video_mode
.refresh_rate
;
722 vg
.window_x
= video_mode
.w
;
723 vg
.window_y
= video_mode
.h
;
731 SDL_SetHint( "SDL_VIDEO_X11_XINERAMA", "1" );
732 SDL_SetHint( "SDL_VIDEO_X11_XRANDR", "0" );
733 SDL_SetHint( "SDL_VIDEO_X11_XVIDMODE", "0" );
736 vg_info( "CreateWindow( %d %d @%dhz )\n", vg
.window_x
, vg
.window_y
,
737 vg
.display_refresh_rate
);
739 /* TODO: Allow selecting closest video mode from launch opts */
740 if((vg
.window
= SDL_CreateWindow( window_name
,
743 0, 0, vg
.window_x
, vg
.window_y
,
744 SDL_WINDOW_BORDERLESS
|SDL_WINDOW_OPENGL
|SDL_WINDOW_INPUT_GRABBED
746 SDL_SetWindowPosition( vg
.window
, video_mode
.w
-vg
.window_x
, 0 );
750 vg
.window_x
, vg
.window_y
,
752 SDL_WINDOW_FULLSCREEN_DESKTOP
|
754 SDL_WINDOW_INPUT_GRABBED
757 if( SDL_SetWindowDisplayMode( vg
.window
, &video_mode
) ){
758 vg_error( "SDL_SetWindowDisplayMode failed: %s", SDL_GetError() );
765 vg_error( "SDL_CreateWindow failed: %s", SDL_GetError() );
769 SDL_RaiseWindow( vg
.window
);
771 vg_info( "CreateContext\n" );
774 if( SDL_IsTextInputActive() ) SDL_StopTextInput();
779 if( (vg
.gl_context
= SDL_GL_CreateContext(vg
.window
) )){
780 SDL_GL_GetDrawableSize( vg
.window
, &vg
.window_x
, &vg
.window_y
);
781 vg_success( "Window created (%dx%d)\n", vg
.window_x
, vg
.window_y
);
784 vg_error( "SDL_GL_CreateContext failed: %s\n", SDL_GetError() );
789 if( !gladLoadGLLoader((GLADloadproc
)SDL_GL_GetProcAddress
) ) {
790 vg_error( "Glad Failed to initialize\n" );
791 SDL_GL_DeleteContext( vg
.gl_context
);
796 const unsigned char* glver
= glGetString( GL_VERSION
);
797 vg_success( "Load setup complete, OpenGL version: %s\n", glver
);
799 SDL_GL_SetSwapInterval(0); /* disable vsync while loading */
801 SDL_DisplayMode dispmode
;
802 if( !SDL_GetWindowDisplayMode( vg
.window
, &dispmode
) ){
803 if( dispmode
.refresh_rate
){
804 vg
.display_refresh_rate
= dispmode
.refresh_rate
;
808 if( vg
.display_refresh_rate
< 25 || vg
.display_refresh_rate
> 300 ){
809 vg
.display_refresh_rate
= 60;
812 vg_info( "Display refresh rate: %d\n", dispmode
.refresh_rate
);
814 #if defined(_WIN32) || defined(VG_DEVWINDOW)
815 vg
.fps_limit
= vg
.display_refresh_rate
;
821 static void _vg_terminate(void)
824 _vg_console_write_persistent();
826 SDL_AtomicLock( &vg
.sl_status
);
827 vg
.engine_status
= k_engine_status_none
;
828 SDL_AtomicUnlock( &vg
.sl_status
);
832 vg_success( "If you see this it means everything went.. \"well\".....\n" );
834 SDL_GL_DeleteContext( vg
.gl_context
);
839 static void vg_enter( int argc
, char *argv
[], const char *window_name
)
842 _vg_process_launch_opts_internal( argc
, argv
);
848 vg_console_reg_var( "fps_limit", &vg
.fps_limit
, k_var_dtype_i32
, 0 );
849 _vg_init_window( window_name
);
852 SDL_SetRelativeMouseMode(1);
854 vg
.thread_id_main
= SDL_GetThreadID(NULL
);
856 /* Opengl-required systems */
860 vg
.engine_status
= k_engine_status_load_internal
;
862 _vg_opengl_sync_init();
863 vg_loader_start( _vg_load_full
, NULL
);
868 static void vg_fatal_error( const char *fmt
, ... )
871 va_start( args
, fmt
);
872 _vg_logx_va( stderr
, NULL
, "fatal", KRED
, fmt
, args
);
875 vg_print_backtrace();
877 SDL_AtomicLock( &vg
.sl_status
);
878 vg
.engine_status
= k_engine_status_crashed
;
879 SDL_AtomicUnlock( &vg
.sl_status
);
881 if( vg_thread_purpose() == k_thread_purpose_loader
){
882 longjmp( vg
.env_loader_exit
, 1 );
885 vg_error( "There is no jump to the error runner thing yet! bai bai\n" );
893 static void vg_fatal_error( const char *fmt
, ... )
896 va_start( args
, fmt
);
897 _vg_logx_va( stderr
, NULL
, "fatal", KRED
, fmt
, args
);
905 * Graphic cards will check these to force it to use the GPU
907 u32 NvOptimusEnablement
= 0x00000001;
908 int AmdPowerXpressRequestHighPerformance
= 1;
912 #endif /* VG_HEADER_H */