1#include <base/detect.h>
2
3#ifndef CONF_BACKEND_OPENGL_ES
4#include <GL/glew.h>
5#endif
6
7#include <SDL.h>
8#include <SDL_messagebox.h>
9
10#include <base/math.h>
11#include <cstdlib>
12
13#include <engine/shared/config.h>
14#include <engine/shared/localization.h>
15
16#include <base/tl/threading.h>
17
18#if defined(CONF_VIDEORECORDER)
19#include <engine/shared/video.h>
20#endif
21
22#include "backend_sdl.h"
23
24#if defined(CONF_HEADLESS_CLIENT)
25#include "backend/null/backend_null.h"
26#endif
27
28#if !defined(CONF_BACKEND_OPENGL_ES)
29#include "backend/opengl/backend_opengl3.h"
30#endif
31
32#if defined(CONF_BACKEND_OPENGL_ES3) || defined(CONF_BACKEND_OPENGL_ES)
33#include "backend/opengles/backend_opengles3.h"
34#endif
35
36#if defined(CONF_BACKEND_VULKAN)
37#include "backend/vulkan/backend_vulkan.h"
38#endif
39
40#include "graphics_threaded.h"
41
42#include <engine/graphics.h>
43
44class IStorage;
45
46// ------------ CGraphicsBackend_Threaded
47
48void CGraphicsBackend_Threaded::ThreadFunc(void *pUser)
49{
50 auto *pSelf = (CGraphicsBackend_Threaded *)pUser;
51 std::unique_lock<std::mutex> Lock(pSelf->m_BufferSwapMutex);
52 // notify, that the thread started
53 pSelf->m_Started = true;
54 pSelf->m_BufferSwapCond.notify_all();
55 while(!pSelf->m_Shutdown)
56 {
57 pSelf->m_BufferSwapCond.wait(lock&: Lock, p: [&pSelf] { return pSelf->m_pBuffer != nullptr || pSelf->m_Shutdown; });
58 if(pSelf->m_pBuffer)
59 {
60#ifdef CONF_PLATFORM_MACOS
61 CAutoreleasePool AutoreleasePool;
62#endif
63 pSelf->m_pProcessor->RunBuffer(pBuffer: pSelf->m_pBuffer);
64
65 pSelf->m_pBuffer = nullptr;
66 pSelf->m_BufferInProcess.store(i: false, m: std::memory_order_relaxed);
67 pSelf->m_BufferSwapCond.notify_all();
68
69#if defined(CONF_VIDEORECORDER)
70 if(IVideo::Current())
71 IVideo::Current()->NextVideoFrameThread();
72#endif
73 }
74 }
75}
76
77CGraphicsBackend_Threaded::CGraphicsBackend_Threaded(TTranslateFunc &&TranslateFunc) :
78 m_TranslateFunc(std::move(TranslateFunc))
79{
80 m_pBuffer = nullptr;
81 m_pProcessor = nullptr;
82 m_Shutdown = true;
83 m_BufferInProcess.store(i: false, m: std::memory_order_relaxed);
84}
85
86void CGraphicsBackend_Threaded::StartProcessor(ICommandProcessor *pProcessor)
87{
88 dbg_assert(m_Shutdown, "Processor was already not shut down.");
89 m_Shutdown = false;
90 m_pProcessor = pProcessor;
91 std::unique_lock<std::mutex> Lock(m_BufferSwapMutex);
92 m_pThread = thread_init(threadfunc: ThreadFunc, user: this, name: "Graphics thread");
93 // wait for the thread to start
94 m_BufferSwapCond.wait(lock&: Lock, p: [this]() -> bool { return m_Started; });
95}
96
97void CGraphicsBackend_Threaded::StopProcessor()
98{
99 dbg_assert(!m_Shutdown, "Processor was already shut down.");
100 m_Shutdown = true;
101 {
102 std::unique_lock<std::mutex> Lock(m_BufferSwapMutex);
103 m_Warning = m_pProcessor->GetWarning();
104 m_BufferSwapCond.notify_all();
105 }
106 thread_wait(thread: m_pThread);
107}
108
109void CGraphicsBackend_Threaded::RunBuffer(CCommandBuffer *pBuffer)
110{
111 SGfxErrorContainer Error;
112#ifdef CONF_WEBASM
113 // run everything single threaded for now, context binding in a thread seems to not work as of now
114 Error = m_pProcessor->GetError();
115 if(Error.m_ErrorType == GFX_ERROR_TYPE_NONE)
116 {
117 RunBufferSingleThreadedUnsafe(pBuffer);
118 }
119#else
120 WaitForIdle();
121 {
122 std::unique_lock<std::mutex> Lock(m_BufferSwapMutex);
123 Error = m_pProcessor->GetError();
124 if(Error.m_ErrorType == GFX_ERROR_TYPE_NONE)
125 {
126 m_pBuffer = pBuffer;
127 m_BufferInProcess.store(i: true, m: std::memory_order_relaxed);
128 m_BufferSwapCond.notify_all();
129 }
130 }
131#endif
132
133 // Process error after lock is released to prevent deadlock
134 if(Error.m_ErrorType != GFX_ERROR_TYPE_NONE)
135 {
136 ProcessError(Error);
137 }
138}
139
140void CGraphicsBackend_Threaded::RunBufferSingleThreadedUnsafe(CCommandBuffer *pBuffer)
141{
142 m_pProcessor->RunBuffer(pBuffer);
143}
144
145bool CGraphicsBackend_Threaded::IsIdle() const
146{
147 return !m_BufferInProcess.load(m: std::memory_order_relaxed);
148}
149
150void CGraphicsBackend_Threaded::WaitForIdle()
151{
152 std::unique_lock<std::mutex> Lock(m_BufferSwapMutex);
153 m_BufferSwapCond.wait(lock&: Lock, p: [this]() { return m_pBuffer == nullptr; });
154}
155
156void CGraphicsBackend_Threaded::ProcessError(const SGfxErrorContainer &Error)
157{
158 std::string VerboseStr = "Graphics Assertion:";
159 for(const auto &ErrStr : Error.m_vErrors)
160 {
161 VerboseStr.append(s: "\n");
162 if(ErrStr.m_RequiresTranslation)
163 VerboseStr.append(s: m_TranslateFunc(ErrStr.m_Err.c_str(), ""));
164 else
165 VerboseStr.append(str: ErrStr.m_Err);
166 }
167 dbg_assert(false, VerboseStr.c_str());
168}
169
170bool CGraphicsBackend_Threaded::GetWarning(std::vector<std::string> &WarningStrings)
171{
172 if(m_Warning.m_WarningType != GFX_WARNING_TYPE_NONE)
173 {
174 m_Warning.m_WarningType = GFX_WARNING_TYPE_NONE;
175 WarningStrings = m_Warning.m_vWarnings;
176 return true;
177 }
178 return false;
179}
180
181// ------------ CCommandProcessorFragment_General
182
183void CCommandProcessorFragment_General::Cmd_Signal(const CCommandBuffer::SCommand_Signal *pCommand)
184{
185 pCommand->m_pSemaphore->Signal();
186}
187
188bool CCommandProcessorFragment_General::RunCommand(const CCommandBuffer::SCommand *pBaseCommand)
189{
190 switch(pBaseCommand->m_Cmd)
191 {
192 case CCommandBuffer::CMD_NOP: break;
193 case CCommandBuffer::CMD_SIGNAL: Cmd_Signal(pCommand: static_cast<const CCommandBuffer::SCommand_Signal *>(pBaseCommand)); break;
194 default: return false;
195 }
196
197 return true;
198}
199
200// ------------ CCommandProcessorFragment_SDL
201void CCommandProcessorFragment_SDL::Cmd_Init(const SCommand_Init *pCommand)
202{
203 m_GLContext = pCommand->m_GLContext;
204 m_pWindow = pCommand->m_pWindow;
205 if(m_GLContext)
206 SDL_GL_MakeCurrent(window: m_pWindow, context: m_GLContext);
207}
208
209void CCommandProcessorFragment_SDL::Cmd_Shutdown(const SCommand_Shutdown *pCommand)
210{
211 if(m_GLContext)
212 SDL_GL_MakeCurrent(NULL, NULL);
213}
214
215void CCommandProcessorFragment_SDL::Cmd_Swap(const CCommandBuffer::SCommand_Swap *pCommand)
216{
217 if(m_GLContext)
218 SDL_GL_SwapWindow(window: m_pWindow);
219}
220
221void CCommandProcessorFragment_SDL::Cmd_VSync(const CCommandBuffer::SCommand_VSync *pCommand)
222{
223 if(m_GLContext)
224 *pCommand->m_pRetOk = SDL_GL_SetSwapInterval(interval: pCommand->m_VSync) == 0;
225}
226
227void CCommandProcessorFragment_SDL::Cmd_WindowCreateNtf(const CCommandBuffer::SCommand_WindowCreateNtf *pCommand)
228{
229 m_pWindow = SDL_GetWindowFromID(id: pCommand->m_WindowId);
230 // Android destroys windows when they are not visible, so we get the new one and work with that
231 // The graphic context does not need to be recreated, just unbound see @see SCommand_WindowDestroyNtf
232#ifdef CONF_PLATFORM_ANDROID
233 if(m_GLContext)
234 SDL_GL_MakeCurrent(m_pWindow, m_GLContext);
235 dbg_msg("gfx", "render surface created.");
236#endif
237}
238
239void CCommandProcessorFragment_SDL::Cmd_WindowDestroyNtf(const CCommandBuffer::SCommand_WindowDestroyNtf *pCommand)
240{
241 // Unbind the graphic context from the window, so it does not get destroyed
242#ifdef CONF_PLATFORM_ANDROID
243 dbg_msg("gfx", "render surface destroyed.");
244 if(m_GLContext)
245 SDL_GL_MakeCurrent(NULL, NULL);
246#endif
247}
248
249CCommandProcessorFragment_SDL::CCommandProcessorFragment_SDL() = default;
250
251bool CCommandProcessorFragment_SDL::RunCommand(const CCommandBuffer::SCommand *pBaseCommand)
252{
253 switch(pBaseCommand->m_Cmd)
254 {
255 case CCommandBuffer::CMD_WINDOW_CREATE_NTF: Cmd_WindowCreateNtf(pCommand: static_cast<const CCommandBuffer::SCommand_WindowCreateNtf *>(pBaseCommand)); break;
256 case CCommandBuffer::CMD_WINDOW_DESTROY_NTF: Cmd_WindowDestroyNtf(pCommand: static_cast<const CCommandBuffer::SCommand_WindowDestroyNtf *>(pBaseCommand)); break;
257 case CCommandBuffer::CMD_SWAP: Cmd_Swap(pCommand: static_cast<const CCommandBuffer::SCommand_Swap *>(pBaseCommand)); break;
258 case CCommandBuffer::CMD_VSYNC: Cmd_VSync(pCommand: static_cast<const CCommandBuffer::SCommand_VSync *>(pBaseCommand)); break;
259 case CCommandBuffer::CMD_MULTISAMPLING: break;
260 case CMD_INIT: Cmd_Init(pCommand: static_cast<const SCommand_Init *>(pBaseCommand)); break;
261 case CMD_SHUTDOWN: Cmd_Shutdown(pCommand: static_cast<const SCommand_Shutdown *>(pBaseCommand)); break;
262 case CCommandProcessorFragment_GLBase::CMD_PRE_INIT: break;
263 case CCommandProcessorFragment_GLBase::CMD_POST_SHUTDOWN: break;
264 default: return false;
265 }
266
267 return true;
268}
269
270// ------------ CCommandProcessor_SDL_GL
271
272void CCommandProcessor_SDL_GL::HandleError()
273{
274 switch(m_Error.m_ErrorType)
275 {
276 case GFX_ERROR_TYPE_INIT:
277 m_Error.m_vErrors.emplace_back(args: SGfxErrorContainer::SError{.m_RequiresTranslation: true, .m_Err: Localizable(pStr: "Failed during initialization. Try to change gfx_backend to OpenGL or Vulkan in settings_ddnet.cfg in the config directory and try again.", pContext: "Graphics error")});
278 break;
279 case GFX_ERROR_TYPE_OUT_OF_MEMORY_IMAGE:
280 [[fallthrough]];
281 case GFX_ERROR_TYPE_OUT_OF_MEMORY_BUFFER:
282 [[fallthrough]];
283 case GFX_ERROR_TYPE_OUT_OF_MEMORY_STAGING:
284 m_Error.m_vErrors.emplace_back(args: SGfxErrorContainer::SError{.m_RequiresTranslation: true, .m_Err: Localizable(pStr: "Out of VRAM. Try removing custom assets (skins, entities, etc.), especially those with high resolution.", pContext: "Graphics error")});
285 break;
286 case GFX_ERROR_TYPE_RENDER_RECORDING:
287 m_Error.m_vErrors.emplace_back(args: SGfxErrorContainer::SError{.m_RequiresTranslation: true, .m_Err: Localizable(pStr: "An error during command recording occurred. Try to update your GPU drivers.", pContext: "Graphics error")});
288 break;
289 case GFX_ERROR_TYPE_RENDER_CMD_FAILED:
290 m_Error.m_vErrors.emplace_back(args: SGfxErrorContainer::SError{.m_RequiresTranslation: true, .m_Err: Localizable(pStr: "A render command failed. Try to update your GPU drivers.", pContext: "Graphics error")});
291 break;
292 case GFX_ERROR_TYPE_RENDER_SUBMIT_FAILED:
293 m_Error.m_vErrors.emplace_back(args: SGfxErrorContainer::SError{.m_RequiresTranslation: true, .m_Err: Localizable(pStr: "Submitting the render commands failed. Try to update your GPU drivers.", pContext: "Graphics error")});
294 break;
295 case GFX_ERROR_TYPE_SWAP_FAILED:
296 m_Error.m_vErrors.emplace_back(args: SGfxErrorContainer::SError{.m_RequiresTranslation: true, .m_Err: Localizable(pStr: "Failed to swap framebuffers. Try to update your GPU drivers.", pContext: "Graphics error")});
297 break;
298 case GFX_ERROR_TYPE_UNKNOWN:
299 [[fallthrough]];
300 default:
301 m_Error.m_vErrors.emplace_back(args: SGfxErrorContainer::SError{.m_RequiresTranslation: true, .m_Err: Localizable(pStr: "Unknown error. Try to change gfx_backend to OpenGL or Vulkan in settings_ddnet.cfg in the config directory and try again.", pContext: "Graphics error")});
302 break;
303 }
304}
305
306void CCommandProcessor_SDL_GL::HandleWarning()
307{
308 switch(m_Warning.m_WarningType)
309 {
310 case GFX_WARNING_TYPE_INIT_FAILED:
311 m_Warning.m_vWarnings.emplace_back(args: Localizable(pStr: "Could not initialize the given graphics backend, reverting to the default backend now.", pContext: "Graphics error"));
312 break;
313 case GFX_WARNING_TYPE_INIT_FAILED_MISSING_INTEGRATED_GPU_DRIVER:
314 m_Warning.m_vWarnings.emplace_back(args: Localizable(pStr: "Could not initialize the given graphics backend, this is probably because you didn't install the driver of the integrated graphics card.", pContext: "Graphics error"));
315 break;
316 case GFX_WARNING_MISSING_EXTENSION:
317 // ignore this warning for now
318 return;
319 case GFX_WARNING_LOW_ON_MEMORY:
320 // ignore this warning for now
321 return;
322 default:
323 dbg_msg(sys: "gfx", fmt: "unhandled warning %d", (int)m_Warning.m_WarningType);
324 break;
325 }
326}
327
328void CCommandProcessor_SDL_GL::RunBuffer(CCommandBuffer *pBuffer)
329{
330 m_pGLBackend->StartCommands(CommandCount: pBuffer->m_CommandCount, EstimatedRenderCallCount: pBuffer->m_RenderCallCount);
331
332 for(CCommandBuffer::SCommand *pCommand = pBuffer->Head(); pCommand; pCommand = pCommand->m_pNext)
333 {
334 auto Res = m_pGLBackend->RunCommand(pBaseCommand: pCommand);
335 if(Res == ERunCommandReturnTypes::RUN_COMMAND_COMMAND_HANDLED)
336 {
337 continue;
338 }
339 else if(Res == ERunCommandReturnTypes::RUN_COMMAND_COMMAND_ERROR)
340 {
341 m_Error = m_pGLBackend->GetError();
342 HandleError();
343 return;
344 }
345 else if(Res == ERunCommandReturnTypes::RUN_COMMAND_COMMAND_WARNING)
346 {
347 m_Warning = m_pGLBackend->GetWarning();
348 HandleWarning();
349 return;
350 }
351
352 if(m_SDL.RunCommand(pBaseCommand: pCommand))
353 continue;
354
355 if(m_General.RunCommand(pBaseCommand: pCommand))
356 continue;
357
358 dbg_msg(sys: "gfx", fmt: "unknown command %d", pCommand->m_Cmd);
359 }
360
361 m_pGLBackend->EndCommands();
362}
363
364CCommandProcessor_SDL_GL::CCommandProcessor_SDL_GL(EBackendType BackendType, int GLMajor, int GLMinor, int GLPatch)
365{
366 m_BackendType = BackendType;
367
368#if defined(CONF_HEADLESS_CLIENT)
369 m_pGLBackend = new CCommandProcessorFragment_Null();
370#else
371 if(BackendType == BACKEND_TYPE_OPENGL_ES)
372 {
373#if defined(CONF_BACKEND_OPENGL_ES) || defined(CONF_BACKEND_OPENGL_ES3)
374 if(GLMajor < 3)
375 {
376 m_pGLBackend = new CCommandProcessorFragment_OpenGLES();
377 }
378 else
379 {
380 m_pGLBackend = new CCommandProcessorFragment_OpenGLES3();
381 }
382#endif
383 }
384 else if(BackendType == BACKEND_TYPE_OPENGL)
385 {
386#if !defined(CONF_BACKEND_OPENGL_ES)
387 if(GLMajor < 2)
388 {
389 m_pGLBackend = new CCommandProcessorFragment_OpenGL();
390 }
391 if(GLMajor == 2)
392 {
393 m_pGLBackend = new CCommandProcessorFragment_OpenGL2();
394 }
395 if(GLMajor == 3 && GLMinor == 0)
396 {
397 m_pGLBackend = new CCommandProcessorFragment_OpenGL3();
398 }
399 else if((GLMajor == 3 && GLMinor == 3) || GLMajor >= 4)
400 {
401 m_pGLBackend = new CCommandProcessorFragment_OpenGL3_3();
402 }
403#endif
404 }
405 else if(BackendType == BACKEND_TYPE_VULKAN)
406 {
407#if defined(CONF_BACKEND_VULKAN)
408 m_pGLBackend = CreateVulkanCommandProcessorFragment();
409#endif
410 }
411#endif
412}
413
414CCommandProcessor_SDL_GL::~CCommandProcessor_SDL_GL()
415{
416 delete m_pGLBackend;
417}
418
419const SGfxErrorContainer &CCommandProcessor_SDL_GL::GetError() const
420{
421 return m_Error;
422}
423
424void CCommandProcessor_SDL_GL::ErroneousCleanup()
425{
426 m_pGLBackend->ErroneousCleanup();
427}
428
429const SGfxWarningContainer &CCommandProcessor_SDL_GL::GetWarning() const
430{
431 return m_Warning;
432}
433
434// ------------ CGraphicsBackend_SDL_GL
435
436static bool BackendInitGlew(EBackendType BackendType, int &GlewMajor, int &GlewMinor, int &GlewPatch)
437{
438 if(BackendType == BACKEND_TYPE_OPENGL)
439 {
440#ifndef CONF_BACKEND_OPENGL_ES
441 // support graphic cards that are pretty old(and linux)
442 glewExperimental = GL_TRUE;
443#ifdef CONF_GLEW_HAS_CONTEXT_INIT
444 if(GLEW_OK != glewContextInit())
445#else
446 if(GLEW_OK != glewInit())
447#endif
448 return false;
449
450#ifdef GLEW_VERSION_4_6
451 if(GLEW_VERSION_4_6)
452 {
453 GlewMajor = 4;
454 GlewMinor = 6;
455 GlewPatch = 0;
456 return true;
457 }
458#endif
459#ifdef GLEW_VERSION_4_5
460 if(GLEW_VERSION_4_5)
461 {
462 GlewMajor = 4;
463 GlewMinor = 5;
464 GlewPatch = 0;
465 return true;
466 }
467#endif
468// Don't allow GL 3.3, if the driver doesn't support at least OpenGL 4.5
469#ifndef CONF_FAMILY_WINDOWS
470 if(GLEW_VERSION_4_4)
471 {
472 GlewMajor = 4;
473 GlewMinor = 4;
474 GlewPatch = 0;
475 return true;
476 }
477 if(GLEW_VERSION_4_3)
478 {
479 GlewMajor = 4;
480 GlewMinor = 3;
481 GlewPatch = 0;
482 return true;
483 }
484 if(GLEW_VERSION_4_2)
485 {
486 GlewMajor = 4;
487 GlewMinor = 2;
488 GlewPatch = 0;
489 return true;
490 }
491 if(GLEW_VERSION_4_1)
492 {
493 GlewMajor = 4;
494 GlewMinor = 1;
495 GlewPatch = 0;
496 return true;
497 }
498 if(GLEW_VERSION_4_0)
499 {
500 GlewMajor = 4;
501 GlewMinor = 0;
502 GlewPatch = 0;
503 return true;
504 }
505 if(GLEW_VERSION_3_3)
506 {
507 GlewMajor = 3;
508 GlewMinor = 3;
509 GlewPatch = 0;
510 return true;
511 }
512#endif
513 if(GLEW_VERSION_3_0)
514 {
515 GlewMajor = 3;
516 GlewMinor = 0;
517 GlewPatch = 0;
518 return true;
519 }
520 if(GLEW_VERSION_2_1)
521 {
522 GlewMajor = 2;
523 GlewMinor = 1;
524 GlewPatch = 0;
525 return true;
526 }
527 if(GLEW_VERSION_2_0)
528 {
529 GlewMajor = 2;
530 GlewMinor = 0;
531 GlewPatch = 0;
532 return true;
533 }
534 if(GLEW_VERSION_1_5)
535 {
536 GlewMajor = 1;
537 GlewMinor = 5;
538 GlewPatch = 0;
539 return true;
540 }
541 if(GLEW_VERSION_1_4)
542 {
543 GlewMajor = 1;
544 GlewMinor = 4;
545 GlewPatch = 0;
546 return true;
547 }
548 if(GLEW_VERSION_1_3)
549 {
550 GlewMajor = 1;
551 GlewMinor = 3;
552 GlewPatch = 0;
553 return true;
554 }
555 if(GLEW_VERSION_1_2_1)
556 {
557 GlewMajor = 1;
558 GlewMinor = 2;
559 GlewPatch = 1;
560 return true;
561 }
562 if(GLEW_VERSION_1_2)
563 {
564 GlewMajor = 1;
565 GlewMinor = 2;
566 GlewPatch = 0;
567 return true;
568 }
569 if(GLEW_VERSION_1_1)
570 {
571 GlewMajor = 1;
572 GlewMinor = 1;
573 GlewPatch = 0;
574 return true;
575 }
576#endif
577 }
578 else if(BackendType == BACKEND_TYPE_OPENGL_ES)
579 {
580 // just assume the version we need
581 GlewMajor = 3;
582 GlewMinor = 0;
583 GlewPatch = 0;
584
585 return true;
586 }
587
588 return true;
589}
590
591static int IsVersionSupportedGlew(EBackendType BackendType, int VersionMajor, int VersionMinor, int VersionPatch, int GlewMajor, int GlewMinor, int GlewPatch)
592{
593 int InitError = 0;
594
595 if(BackendType == BACKEND_TYPE_OPENGL)
596 {
597 if(VersionMajor >= 4 && GlewMajor < 4)
598 {
599 InitError = -1;
600 }
601 else if(VersionMajor >= 3 && GlewMajor < 3)
602 {
603 InitError = -1;
604 }
605 else if(VersionMajor == 3 && GlewMajor == 3)
606 {
607 if(VersionMinor >= 3 && GlewMinor < 3)
608 {
609 InitError = -1;
610 }
611 if(VersionMinor >= 2 && GlewMinor < 2)
612 {
613 InitError = -1;
614 }
615 if(VersionMinor >= 1 && GlewMinor < 1)
616 {
617 InitError = -1;
618 }
619 if(VersionMinor >= 0 && GlewMinor < 0)
620 {
621 InitError = -1;
622 }
623 }
624 else if(VersionMajor >= 2 && GlewMajor < 2)
625 {
626 InitError = -1;
627 }
628 else if(VersionMajor == 2 && GlewMajor == 2)
629 {
630 if(VersionMinor >= 1 && GlewMinor < 1)
631 {
632 InitError = -1;
633 }
634 if(VersionMinor >= 0 && GlewMinor < 0)
635 {
636 InitError = -1;
637 }
638 }
639 else if(VersionMajor >= 1 && GlewMajor < 1)
640 {
641 InitError = -1;
642 }
643 else if(VersionMajor == 1 && GlewMajor == 1)
644 {
645 if(VersionMinor >= 5 && GlewMinor < 5)
646 {
647 InitError = -1;
648 }
649 if(VersionMinor >= 4 && GlewMinor < 4)
650 {
651 InitError = -1;
652 }
653 if(VersionMinor >= 3 && GlewMinor < 3)
654 {
655 InitError = -1;
656 }
657 if(VersionMinor >= 2 && GlewMinor < 2)
658 {
659 InitError = -1;
660 }
661 else if(VersionMinor == 2 && GlewMinor == 2)
662 {
663 if(VersionPatch >= 1 && GlewPatch < 1)
664 {
665 InitError = -1;
666 }
667 if(VersionPatch >= 0 && GlewPatch < 0)
668 {
669 InitError = -1;
670 }
671 }
672 if(VersionMinor >= 1 && GlewMinor < 1)
673 {
674 InitError = -1;
675 }
676 if(VersionMinor >= 0 && GlewMinor < 0)
677 {
678 InitError = -1;
679 }
680 }
681 }
682
683 return InitError;
684}
685
686EBackendType CGraphicsBackend_SDL_GL::DetectBackend()
687{
688 EBackendType RetBackendType = BACKEND_TYPE_OPENGL;
689#if defined(CONF_BACKEND_VULKAN)
690 const char *pEnvDriver = SDL_getenv(name: "DDNET_DRIVER");
691 if(pEnvDriver && str_comp_nocase(a: pEnvDriver, b: "GLES") == 0)
692 RetBackendType = BACKEND_TYPE_OPENGL_ES;
693 else if(pEnvDriver && str_comp_nocase(a: pEnvDriver, b: "Vulkan") == 0)
694 RetBackendType = BACKEND_TYPE_VULKAN;
695 else if(pEnvDriver && str_comp_nocase(a: pEnvDriver, b: "OpenGL") == 0)
696 RetBackendType = BACKEND_TYPE_OPENGL;
697 else if(pEnvDriver == nullptr)
698 {
699 // load the config backend
700 const char *pConfBackend = g_Config.m_GfxBackend;
701 if(str_comp_nocase(a: pConfBackend, b: "GLES") == 0)
702 RetBackendType = BACKEND_TYPE_OPENGL_ES;
703 else if(str_comp_nocase(a: pConfBackend, b: "Vulkan") == 0)
704 RetBackendType = BACKEND_TYPE_VULKAN;
705 else if(str_comp_nocase(a: pConfBackend, b: "OpenGL") == 0)
706 RetBackendType = BACKEND_TYPE_OPENGL;
707 }
708#else
709 RetBackendType = BACKEND_TYPE_OPENGL;
710#endif
711#if !defined(CONF_BACKEND_OPENGL_ES) && !defined(CONF_BACKEND_OPENGL_ES3)
712 if(RetBackendType == BACKEND_TYPE_OPENGL_ES)
713 RetBackendType = BACKEND_TYPE_OPENGL;
714#elif defined(CONF_BACKEND_OPENGL_ES)
715 if(RetBackendType == BACKEND_TYPE_OPENGL)
716 RetBackendType = BACKEND_TYPE_OPENGL_ES;
717#endif
718 return RetBackendType;
719}
720
721void CGraphicsBackend_SDL_GL::ClampDriverVersion(EBackendType BackendType)
722{
723 if(BackendType == BACKEND_TYPE_OPENGL)
724 {
725 // clamp the versions to existing versions(only for OpenGL major <= 3)
726 if(g_Config.m_GfxGLMajor == 1)
727 {
728 g_Config.m_GfxGLMinor = clamp(val: g_Config.m_GfxGLMinor, lo: 1, hi: 5);
729 if(g_Config.m_GfxGLMinor == 2)
730 g_Config.m_GfxGLPatch = clamp(val: g_Config.m_GfxGLPatch, lo: 0, hi: 1);
731 else
732 g_Config.m_GfxGLPatch = 0;
733 }
734 else if(g_Config.m_GfxGLMajor == 2)
735 {
736 g_Config.m_GfxGLMinor = clamp(val: g_Config.m_GfxGLMinor, lo: 0, hi: 1);
737 g_Config.m_GfxGLPatch = 0;
738 }
739 else if(g_Config.m_GfxGLMajor == 3)
740 {
741 g_Config.m_GfxGLMinor = clamp(val: g_Config.m_GfxGLMinor, lo: 0, hi: 3);
742 if(g_Config.m_GfxGLMinor < 3)
743 g_Config.m_GfxGLMinor = 0;
744 g_Config.m_GfxGLPatch = 0;
745 }
746 }
747 else if(BackendType == BACKEND_TYPE_OPENGL_ES)
748 {
749#if !defined(CONF_BACKEND_OPENGL_ES3)
750 // Make sure GLES is set to 1.0 (which is equivalent to OpenGL 1.3), if its not set to >= 3.0(which is equivalent to OpenGL 3.3)
751 if(g_Config.m_GfxGLMajor < 3)
752 {
753 g_Config.m_GfxGLMajor = 1;
754 g_Config.m_GfxGLMinor = 0;
755 g_Config.m_GfxGLPatch = 0;
756
757 // GLES also doesn't know GL_QUAD
758 g_Config.m_GfxQuadAsTriangle = 1;
759 }
760#else
761 g_Config.m_GfxGLMajor = 3;
762 g_Config.m_GfxGLMinor = 0;
763 g_Config.m_GfxGLPatch = 0;
764#endif
765 }
766 else if(BackendType == BACKEND_TYPE_VULKAN)
767 {
768#if defined(CONF_BACKEND_VULKAN)
769 g_Config.m_GfxGLMajor = gs_BackendVulkanMajor;
770 g_Config.m_GfxGLMinor = gs_BackendVulkanMinor;
771 g_Config.m_GfxGLPatch = 0;
772#endif
773 }
774}
775
776bool CGraphicsBackend_SDL_GL::ShowMessageBox(unsigned Type, const char *pTitle, const char *pMsg)
777{
778 if(m_pProcessor != nullptr)
779 {
780 m_pProcessor->ErroneousCleanup();
781 }
782 // TODO: Remove this workaround when https://github.com/libsdl-org/SDL/issues/3750 is
783 // fixed and pass the window to SDL_ShowSimpleMessageBox to make the popup modal instead
784 // of destroying the window before opening the popup.
785 if(m_pWindow != nullptr)
786 {
787 SDL_DestroyWindow(window: m_pWindow);
788 m_pWindow = nullptr;
789 }
790 return SDL_ShowSimpleMessageBox(flags: Type, title: pTitle, message: pMsg, window: nullptr) == 0;
791}
792
793bool CGraphicsBackend_SDL_GL::IsModernAPI(EBackendType BackendType)
794{
795 if(BackendType == BACKEND_TYPE_OPENGL)
796 return (g_Config.m_GfxGLMajor == 3 && g_Config.m_GfxGLMinor == 3) || g_Config.m_GfxGLMajor >= 4;
797 else if(BackendType == BACKEND_TYPE_OPENGL_ES)
798 return g_Config.m_GfxGLMajor >= 3;
799 else if(BackendType == BACKEND_TYPE_VULKAN)
800 return true;
801
802 return false;
803}
804
805bool CGraphicsBackend_SDL_GL::GetDriverVersion(EGraphicsDriverAgeType DriverAgeType, int &Major, int &Minor, int &Patch, const char *&pName, EBackendType BackendType)
806{
807 if(BackendType == BACKEND_TYPE_AUTO)
808 BackendType = m_BackendType;
809 if(BackendType == BACKEND_TYPE_OPENGL)
810 {
811 pName = "OpenGL";
812#ifndef CONF_BACKEND_OPENGL_ES
813 if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_LEGACY)
814 {
815 Major = 1;
816 Minor = 4;
817 Patch = 0;
818 return true;
819 }
820 else if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_DEFAULT)
821 {
822 Major = 3;
823 Minor = 0;
824 Patch = 0;
825 return true;
826 }
827 else if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_MODERN)
828 {
829 Major = 3;
830 Minor = 3;
831 Patch = 0;
832 return true;
833 }
834#endif
835 }
836 else if(BackendType == BACKEND_TYPE_OPENGL_ES)
837 {
838 pName = "GLES";
839#ifdef CONF_BACKEND_OPENGL_ES
840 if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_LEGACY)
841 {
842 Major = 1;
843 Minor = 0;
844 Patch = 0;
845 return true;
846 }
847 else if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_DEFAULT)
848 {
849 Major = 3;
850 Minor = 0;
851 Patch = 0;
852 // there isn't really a default one
853 return false;
854 }
855#endif
856#ifdef CONF_BACKEND_OPENGL_ES3
857 if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_MODERN)
858 {
859 Major = 3;
860 Minor = 0;
861 Patch = 0;
862 return true;
863 }
864#endif
865 }
866 else if(BackendType == BACKEND_TYPE_VULKAN)
867 {
868 pName = "Vulkan";
869#ifdef CONF_BACKEND_VULKAN
870 if(DriverAgeType == GRAPHICS_DRIVER_AGE_TYPE_DEFAULT)
871 {
872 Major = gs_BackendVulkanMajor;
873 Minor = gs_BackendVulkanMinor;
874 Patch = 0;
875 return true;
876 }
877#else
878 return false;
879#endif
880 }
881 return false;
882}
883
884const char *CGraphicsBackend_SDL_GL::GetScreenName(int Screen) const
885{
886 const char *pName = SDL_GetDisplayName(displayIndex: Screen);
887 return pName == nullptr ? "unknown/error" : pName;
888}
889
890static void DisplayToVideoMode(CVideoMode *pVMode, SDL_DisplayMode *pMode, int HiDPIScale, int RefreshRate)
891{
892 pVMode->m_CanvasWidth = pMode->w * HiDPIScale;
893 pVMode->m_CanvasHeight = pMode->h * HiDPIScale;
894 pVMode->m_WindowWidth = pMode->w;
895 pVMode->m_WindowHeight = pMode->h;
896 pVMode->m_RefreshRate = RefreshRate;
897 pVMode->m_Red = SDL_BITSPERPIXEL(pMode->format);
898 pVMode->m_Green = SDL_BITSPERPIXEL(pMode->format);
899 pVMode->m_Blue = SDL_BITSPERPIXEL(pMode->format);
900 pVMode->m_Format = pMode->format;
901}
902
903void CGraphicsBackend_SDL_GL::GetVideoModes(CVideoMode *pModes, int MaxModes, int *pNumModes, int HiDPIScale, int MaxWindowWidth, int MaxWindowHeight, int ScreenId)
904{
905 SDL_DisplayMode DesktopMode;
906 int maxModes = SDL_GetNumDisplayModes(displayIndex: ScreenId);
907 int numModes = 0;
908
909 // Only collect fullscreen modes when requested, that makes sure in windowed mode no refresh rates are shown that aren't supported without
910 // fullscreen anyway(except fullscreen desktop)
911 bool IsFullscreenDestkop = m_pWindow != NULL && (((SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN_DESKTOP) || g_Config.m_GfxFullscreen == 3);
912 bool CollectFullscreenModes = m_pWindow == NULL || ((SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_FULLSCREEN) != 0 && !IsFullscreenDestkop);
913
914 if(SDL_GetDesktopDisplayMode(displayIndex: ScreenId, mode: &DesktopMode) < 0)
915 {
916 dbg_msg(sys: "gfx", fmt: "unable to get display mode: %s", SDL_GetError());
917 }
918
919 constexpr int ModeCount = 256;
920 SDL_DisplayMode aModes[ModeCount];
921 int NumModes = 0;
922 for(int i = 0; i < maxModes && NumModes < ModeCount; i++)
923 {
924 SDL_DisplayMode mode;
925 if(SDL_GetDisplayMode(displayIndex: ScreenId, modeIndex: i, mode: &mode) < 0)
926 {
927 dbg_msg(sys: "gfx", fmt: "unable to get display mode: %s", SDL_GetError());
928 continue;
929 }
930
931 aModes[NumModes] = mode;
932 ++NumModes;
933 }
934
935 auto &&ModeInsert = [&](SDL_DisplayMode &mode) {
936 if(numModes < MaxModes)
937 {
938 // if last mode was equal, ignore this one --- in fullscreen this can really only happen if the screen
939 // supports different color modes
940 // in non fullscren these are the modes that show different refresh rate, but are basically the same
941 if(numModes > 0 && pModes[numModes - 1].m_WindowWidth == mode.w && pModes[numModes - 1].m_WindowHeight == mode.h && (pModes[numModes - 1].m_RefreshRate == mode.refresh_rate || (mode.refresh_rate != DesktopMode.refresh_rate && !CollectFullscreenModes)))
942 return;
943
944 DisplayToVideoMode(pVMode: &pModes[numModes], pMode: &mode, HiDPIScale, RefreshRate: !CollectFullscreenModes ? DesktopMode.refresh_rate : mode.refresh_rate);
945 numModes++;
946 }
947 };
948
949 for(int i = 0; i < NumModes; i++)
950 {
951 SDL_DisplayMode &mode = aModes[i];
952
953 if(mode.w > MaxWindowWidth || mode.h > MaxWindowHeight)
954 continue;
955
956 ModeInsert(mode);
957
958 if(IsFullscreenDestkop)
959 break;
960
961 if(numModes >= MaxModes)
962 break;
963 }
964 *pNumModes = numModes;
965}
966
967void CGraphicsBackend_SDL_GL::GetCurrentVideoMode(CVideoMode &CurMode, int HiDPIScale, int MaxWindowWidth, int MaxWindowHeight, int ScreenId)
968{
969 SDL_DisplayMode DpMode;
970 // if "real" fullscreen, obtain the video mode for that
971 if((SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN)
972 {
973 if(SDL_GetCurrentDisplayMode(displayIndex: ScreenId, mode: &DpMode))
974 {
975 dbg_msg(sys: "gfx", fmt: "unable to get display mode: %s", SDL_GetError());
976 }
977 }
978 else
979 {
980 if(SDL_GetDesktopDisplayMode(displayIndex: ScreenId, mode: &DpMode) < 0)
981 {
982 dbg_msg(sys: "gfx", fmt: "unable to get display mode: %s", SDL_GetError());
983 }
984 else
985 {
986 int Width = 0;
987 int Height = 0;
988 SDL_GL_GetDrawableSize(window: m_pWindow, w: &Width, h: &Height);
989 DpMode.w = Width;
990 DpMode.h = Height;
991 }
992 }
993 DisplayToVideoMode(pVMode: &CurMode, pMode: &DpMode, HiDPIScale, RefreshRate: DpMode.refresh_rate);
994}
995
996CGraphicsBackend_SDL_GL::CGraphicsBackend_SDL_GL(TTranslateFunc &&TranslateFunc) :
997 CGraphicsBackend_Threaded(std::move(TranslateFunc))
998{
999 mem_zero(block: m_aErrorString, size: std::size(m_aErrorString));
1000}
1001
1002int CGraphicsBackend_SDL_GL::Init(const char *pName, int *pScreen, int *pWidth, int *pHeight, int *pRefreshRate, int *pFsaaSamples, int Flags, int *pDesktopWidth, int *pDesktopHeight, int *pCurrentWidth, int *pCurrentHeight, IStorage *pStorage)
1003{
1004#if defined(CONF_HEADLESS_CLIENT)
1005 int InitError = 0;
1006 const char *pErrorStr = NULL;
1007 int GlewMajor = 0;
1008 int GlewMinor = 0;
1009 int GlewPatch = 0;
1010 IsVersionSupportedGlew(m_BackendType, g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor, g_Config.m_GfxGLPatch, GlewMajor, GlewMinor, GlewPatch);
1011 BackendInitGlew(m_BackendType, GlewMajor, GlewMinor, GlewPatch);
1012#else
1013 // print sdl version
1014 {
1015 SDL_version Compiled;
1016 SDL_version Linked;
1017
1018 SDL_VERSION(&Compiled);
1019 SDL_GetVersion(ver: &Linked);
1020 dbg_msg(sys: "sdl", fmt: "SDL version %d.%d.%d (compiled = %d.%d.%d)", Linked.major, Linked.minor, Linked.patch,
1021 Compiled.major, Compiled.minor, Compiled.patch);
1022 }
1023
1024 if(!SDL_WasInit(SDL_INIT_VIDEO))
1025 {
1026 if(SDL_InitSubSystem(SDL_INIT_VIDEO) < 0)
1027 {
1028 dbg_msg(sys: "gfx", fmt: "unable to init SDL video: %s", SDL_GetError());
1029 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_INIT_FAILED;
1030 }
1031 }
1032
1033 EBackendType OldBackendType = m_BackendType;
1034 m_BackendType = DetectBackend();
1035 // little fallback for Vulkan
1036 if(OldBackendType != BACKEND_TYPE_AUTO)
1037 {
1038 if(m_BackendType == BACKEND_TYPE_VULKAN)
1039 {
1040 // try default opengl settings
1041 str_copy(dst&: g_Config.m_GfxBackend, src: "OpenGL");
1042 g_Config.m_GfxGLMajor = 3;
1043 g_Config.m_GfxGLMinor = 0;
1044 g_Config.m_GfxGLPatch = 0;
1045 // do another analysis round too, just in case
1046 g_Config.m_Gfx3DTextureAnalysisRan = 0;
1047 g_Config.m_GfxDriverIsBlocked = 0;
1048
1049 SDL_setenv(name: "DDNET_DRIVER", value: "OpenGL", overwrite: 1);
1050 m_BackendType = DetectBackend();
1051 }
1052 }
1053
1054 ClampDriverVersion(BackendType: m_BackendType);
1055
1056 bool UseModernGL = IsModernAPI(BackendType: m_BackendType);
1057
1058 bool IsOpenGLFamilyBackend = m_BackendType == BACKEND_TYPE_OPENGL || m_BackendType == BACKEND_TYPE_OPENGL_ES;
1059
1060 if(IsOpenGLFamilyBackend)
1061 {
1062 SDL_GL_SetAttribute(attr: SDL_GL_CONTEXT_MAJOR_VERSION, value: g_Config.m_GfxGLMajor);
1063 SDL_GL_SetAttribute(attr: SDL_GL_CONTEXT_MINOR_VERSION, value: g_Config.m_GfxGLMinor);
1064 }
1065
1066 dbg_msg(sys: "gfx", fmt: "Created %s %d.%d context.", ((m_BackendType == BACKEND_TYPE_VULKAN) ? "Vulkan" : "OpenGL"), g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor);
1067
1068 if(m_BackendType == BACKEND_TYPE_OPENGL)
1069 {
1070 if(g_Config.m_GfxGLMajor == 3 && g_Config.m_GfxGLMinor == 0)
1071 {
1072 SDL_GL_SetAttribute(attr: SDL_GL_CONTEXT_PROFILE_MASK, value: SDL_GL_CONTEXT_PROFILE_COMPATIBILITY);
1073 }
1074 else if(UseModernGL)
1075 {
1076 SDL_GL_SetAttribute(attr: SDL_GL_CONTEXT_PROFILE_MASK, value: SDL_GL_CONTEXT_PROFILE_CORE);
1077 }
1078 }
1079 else if(m_BackendType == BACKEND_TYPE_OPENGL_ES)
1080 {
1081 SDL_GL_SetAttribute(attr: SDL_GL_CONTEXT_PROFILE_MASK, value: SDL_GL_CONTEXT_PROFILE_ES);
1082 }
1083
1084 if(IsOpenGLFamilyBackend)
1085 {
1086 *pFsaaSamples = std::clamp(val: *pFsaaSamples, lo: 0, hi: 8);
1087 }
1088
1089 // set screen
1090 SDL_Rect ScreenPos;
1091 m_NumScreens = SDL_GetNumVideoDisplays();
1092 if(m_NumScreens > 0)
1093 {
1094 *pScreen = clamp(val: *pScreen, lo: 0, hi: m_NumScreens - 1);
1095 if(SDL_GetDisplayBounds(displayIndex: *pScreen, rect: &ScreenPos) != 0)
1096 {
1097 dbg_msg(sys: "gfx", fmt: "unable to retrieve screen information: %s", SDL_GetError());
1098 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_SCREEN_INFO_REQUEST_FAILED;
1099 }
1100 }
1101 else
1102 {
1103 dbg_msg(sys: "gfx", fmt: "unable to retrieve number of screens: %s", SDL_GetError());
1104 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_SCREEN_REQUEST_FAILED;
1105 }
1106
1107 // store desktop resolution for settings reset button
1108 SDL_DisplayMode DisplayMode;
1109 if(SDL_GetDesktopDisplayMode(displayIndex: *pScreen, mode: &DisplayMode))
1110 {
1111 dbg_msg(sys: "gfx", fmt: "unable to get desktop resolution: %s", SDL_GetError());
1112 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_SCREEN_RESOLUTION_REQUEST_FAILED;
1113 }
1114
1115 bool IsDesktopChanged = *pDesktopWidth == 0 || *pDesktopHeight == 0 || *pDesktopWidth != DisplayMode.w || *pDesktopHeight != DisplayMode.h;
1116
1117 *pDesktopWidth = DisplayMode.w;
1118 *pDesktopHeight = DisplayMode.h;
1119
1120 // fetch supported video modes
1121 bool SupportedResolution = false;
1122
1123 CVideoMode aModes[256];
1124 int ModesCount = 0;
1125 int IndexOfResolution = -1;
1126 GetVideoModes(pModes: aModes, MaxModes: std::size(aModes), pNumModes: &ModesCount, HiDPIScale: 1, MaxWindowWidth: *pDesktopWidth, MaxWindowHeight: *pDesktopHeight, ScreenId: *pScreen);
1127
1128 for(int i = 0; i < ModesCount; i++)
1129 {
1130 if(*pWidth == aModes[i].m_WindowWidth && *pHeight == aModes[i].m_WindowHeight && (*pRefreshRate == aModes[i].m_RefreshRate || *pRefreshRate == 0))
1131 {
1132 SupportedResolution = true;
1133 IndexOfResolution = i;
1134 break;
1135 }
1136 }
1137
1138 // set flags
1139 int SdlFlags = SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_INPUT_FOCUS | SDL_WINDOW_MOUSE_FOCUS;
1140 SdlFlags |= (IsOpenGLFamilyBackend) ? SDL_WINDOW_OPENGL : SDL_WINDOW_VULKAN;
1141 if(Flags & IGraphicsBackend::INITFLAG_HIGHDPI)
1142 SdlFlags |= SDL_WINDOW_ALLOW_HIGHDPI;
1143 if(Flags & IGraphicsBackend::INITFLAG_RESIZABLE)
1144 SdlFlags |= SDL_WINDOW_RESIZABLE;
1145 if(Flags & IGraphicsBackend::INITFLAG_BORDERLESS)
1146 SdlFlags |= SDL_WINDOW_BORDERLESS;
1147 if(Flags & IGraphicsBackend::INITFLAG_FULLSCREEN)
1148 SdlFlags |= SDL_WINDOW_FULLSCREEN;
1149 else if(Flags & (IGraphicsBackend::INITFLAG_DESKTOP_FULLSCREEN))
1150 SdlFlags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
1151
1152 bool IsFullscreen = (SdlFlags & SDL_WINDOW_FULLSCREEN) != 0 || g_Config.m_GfxFullscreen == 3;
1153 // use desktop resolution as default resolution, clamp resolution if users's display is smaller than we remembered
1154 // if the user starts in fullscreen, and the resolution was not found use the desktop one
1155 if((IsFullscreen && !SupportedResolution) || *pWidth == 0 || *pHeight == 0 || (IsDesktopChanged && (!SupportedResolution || !IsFullscreen) && (*pWidth > *pDesktopWidth || *pHeight > *pDesktopHeight)))
1156 {
1157 *pWidth = *pDesktopWidth;
1158 *pHeight = *pDesktopHeight;
1159 *pRefreshRate = DisplayMode.refresh_rate;
1160 }
1161
1162 // if in fullscreen and refresh rate wasn't set yet, just use the one from the found list
1163 if(*pRefreshRate == 0 && SupportedResolution)
1164 {
1165 *pRefreshRate = aModes[IndexOfResolution].m_RefreshRate;
1166 }
1167 else if(*pRefreshRate == 0)
1168 {
1169 *pRefreshRate = DisplayMode.refresh_rate;
1170 }
1171
1172 // set gl attributes
1173 if(IsOpenGLFamilyBackend)
1174 {
1175 SDL_GL_SetAttribute(attr: SDL_GL_DOUBLEBUFFER, value: 1);
1176 if(*pFsaaSamples)
1177 {
1178 SDL_GL_SetAttribute(attr: SDL_GL_MULTISAMPLEBUFFERS, value: 1);
1179 SDL_GL_SetAttribute(attr: SDL_GL_MULTISAMPLESAMPLES, value: *pFsaaSamples);
1180 }
1181 else
1182 {
1183 SDL_GL_SetAttribute(attr: SDL_GL_MULTISAMPLEBUFFERS, value: 0);
1184 SDL_GL_SetAttribute(attr: SDL_GL_MULTISAMPLESAMPLES, value: 0);
1185 }
1186 }
1187
1188 m_pWindow = SDL_CreateWindow(
1189 title: pName,
1190 SDL_WINDOWPOS_CENTERED_DISPLAY(*pScreen),
1191 SDL_WINDOWPOS_CENTERED_DISPLAY(*pScreen),
1192 w: *pWidth,
1193 h: *pHeight,
1194 flags: SdlFlags);
1195
1196 // set caption
1197 if(m_pWindow == NULL)
1198 {
1199 dbg_msg(sys: "gfx", fmt: "unable to create window: %s", SDL_GetError());
1200 if(m_BackendType == BACKEND_TYPE_VULKAN)
1201 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_GL_CONTEXT_FAILED;
1202 else
1203 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_SDL_WINDOW_CREATE_FAILED;
1204 }
1205
1206 int GlewMajor = 0;
1207 int GlewMinor = 0;
1208 int GlewPatch = 0;
1209
1210 if(IsOpenGLFamilyBackend)
1211 {
1212 m_GLContext = SDL_GL_CreateContext(window: m_pWindow);
1213
1214 if(m_GLContext == NULL)
1215 {
1216 SDL_DestroyWindow(window: m_pWindow);
1217 m_pWindow = nullptr;
1218 dbg_msg(sys: "gfx", fmt: "unable to create graphic context: %s", SDL_GetError());
1219 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_GL_CONTEXT_FAILED;
1220 }
1221
1222 if(!BackendInitGlew(BackendType: m_BackendType, GlewMajor, GlewMinor, GlewPatch))
1223 {
1224 SDL_GL_DeleteContext(context: m_GLContext);
1225 SDL_DestroyWindow(window: m_pWindow);
1226 m_pWindow = nullptr;
1227 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_UNKNOWN;
1228 }
1229 }
1230
1231 int InitError = 0;
1232 const char *pErrorStr = NULL;
1233
1234 InitError = IsVersionSupportedGlew(BackendType: m_BackendType, VersionMajor: g_Config.m_GfxGLMajor, VersionMinor: g_Config.m_GfxGLMinor, VersionPatch: g_Config.m_GfxGLPatch, GlewMajor, GlewMinor, GlewPatch);
1235
1236 // SDL_GL_GetDrawableSize reports HiDPI resolution even with SDL_WINDOW_ALLOW_HIGHDPI not set, which is wrong
1237 if(SdlFlags & SDL_WINDOW_ALLOW_HIGHDPI && IsOpenGLFamilyBackend)
1238 SDL_GL_GetDrawableSize(window: m_pWindow, w: pCurrentWidth, h: pCurrentHeight);
1239 else
1240 SDL_GetWindowSize(window: m_pWindow, w: pCurrentWidth, h: pCurrentHeight);
1241
1242 if(IsOpenGLFamilyBackend)
1243 {
1244 SDL_GL_SetSwapInterval(interval: Flags & IGraphicsBackend::INITFLAG_VSYNC ? 1 : 0);
1245 SDL_GL_MakeCurrent(NULL, NULL);
1246 }
1247
1248 if(InitError != 0)
1249 {
1250 if(m_GLContext)
1251 SDL_GL_DeleteContext(context: m_GLContext);
1252 SDL_DestroyWindow(window: m_pWindow);
1253 m_pWindow = nullptr;
1254
1255 // try setting to glew supported version
1256 g_Config.m_GfxGLMajor = GlewMajor;
1257 g_Config.m_GfxGLMinor = GlewMinor;
1258 g_Config.m_GfxGLPatch = GlewPatch;
1259
1260 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_GL_VERSION_FAILED;
1261 }
1262#endif // CONF_HEADLESS_CLIENT
1263
1264 // start the command processor
1265 dbg_assert(m_pProcessor == nullptr, "Processor was not cleaned up properly.");
1266 m_pProcessor = new CCommandProcessor_SDL_GL(m_BackendType, g_Config.m_GfxGLMajor, g_Config.m_GfxGLMinor, g_Config.m_GfxGLPatch);
1267 StartProcessor(pProcessor: m_pProcessor);
1268
1269 // issue init commands for OpenGL and SDL
1270 CCommandBuffer CmdBuffer(1024, 512);
1271 CCommandProcessorFragment_GLBase::SCommand_PreInit CmdPre;
1272 CmdPre.m_pWindow = m_pWindow;
1273 CmdPre.m_Width = *pCurrentWidth;
1274 CmdPre.m_Height = *pCurrentHeight;
1275 CmdPre.m_pVendorString = m_aVendorString;
1276 CmdPre.m_pVersionString = m_aVersionString;
1277 CmdPre.m_pRendererString = m_aRendererString;
1278 CmdPre.m_pGpuList = &m_GpuList;
1279 CmdBuffer.AddCommandUnsafe(Command: CmdPre);
1280 RunBufferSingleThreadedUnsafe(pBuffer: &CmdBuffer);
1281 CmdBuffer.Reset();
1282
1283 // run sdl first to have the context in the thread
1284 CCommandProcessorFragment_SDL::SCommand_Init CmdSDL;
1285 CmdSDL.m_pWindow = m_pWindow;
1286 CmdSDL.m_GLContext = m_GLContext;
1287 CmdBuffer.AddCommandUnsafe(Command: CmdSDL);
1288 RunBuffer(pBuffer: &CmdBuffer);
1289 WaitForIdle();
1290 CmdBuffer.Reset();
1291
1292 if(InitError == 0)
1293 {
1294 CCommandProcessorFragment_GLBase::SCommand_Init CmdGL;
1295 CmdGL.m_pWindow = m_pWindow;
1296 CmdGL.m_Width = *pCurrentWidth;
1297 CmdGL.m_Height = *pCurrentHeight;
1298 CmdGL.m_pTextureMemoryUsage = &m_TextureMemoryUsage;
1299 CmdGL.m_pBufferMemoryUsage = &m_BufferMemoryUsage;
1300 CmdGL.m_pStreamMemoryUsage = &m_StreamMemoryUsage;
1301 CmdGL.m_pStagingMemoryUsage = &m_StagingMemoryUsage;
1302 CmdGL.m_pGpuList = &m_GpuList;
1303 CmdGL.m_pReadPresentedImageDataFunc = &m_ReadPresentedImageDataFunc;
1304 CmdGL.m_pStorage = pStorage;
1305 CmdGL.m_pCapabilities = &m_Capabilites;
1306 CmdGL.m_pInitError = &InitError;
1307 CmdGL.m_RequestedMajor = g_Config.m_GfxGLMajor;
1308 CmdGL.m_RequestedMinor = g_Config.m_GfxGLMinor;
1309 CmdGL.m_RequestedPatch = g_Config.m_GfxGLPatch;
1310 CmdGL.m_GlewMajor = GlewMajor;
1311 CmdGL.m_GlewMinor = GlewMinor;
1312 CmdGL.m_GlewPatch = GlewPatch;
1313 CmdGL.m_pErrStringPtr = &pErrorStr;
1314 CmdGL.m_pVendorString = m_aVendorString;
1315 CmdGL.m_pVersionString = m_aVersionString;
1316 CmdGL.m_pRendererString = m_aRendererString;
1317 CmdGL.m_RequestedBackend = m_BackendType;
1318 CmdBuffer.AddCommandUnsafe(Command: CmdGL);
1319
1320 RunBuffer(pBuffer: &CmdBuffer);
1321 WaitForIdle();
1322 CmdBuffer.Reset();
1323 }
1324
1325 if(InitError != 0)
1326 {
1327 if(InitError != -2)
1328 {
1329 // shutdown the context, as it might have been initialized
1330 CCommandProcessorFragment_GLBase::SCommand_Shutdown CmdGL;
1331 CmdBuffer.AddCommandUnsafe(Command: CmdGL);
1332 RunBuffer(pBuffer: &CmdBuffer);
1333 WaitForIdle();
1334 CmdBuffer.Reset();
1335 }
1336
1337 CCommandProcessorFragment_SDL::SCommand_Shutdown Cmd;
1338 CmdBuffer.AddCommandUnsafe(Command: Cmd);
1339 RunBuffer(pBuffer: &CmdBuffer);
1340 WaitForIdle();
1341 CmdBuffer.Reset();
1342
1343 CCommandProcessorFragment_GLBase::SCommand_PostShutdown CmdPost;
1344 CmdBuffer.AddCommandUnsafe(Command: CmdPost);
1345 RunBufferSingleThreadedUnsafe(pBuffer: &CmdBuffer);
1346 CmdBuffer.Reset();
1347
1348 // stop and delete the processor
1349 StopProcessor();
1350 delete m_pProcessor;
1351 m_pProcessor = nullptr;
1352
1353 if(m_GLContext)
1354 SDL_GL_DeleteContext(context: m_GLContext);
1355 SDL_DestroyWindow(window: m_pWindow);
1356 m_pWindow = nullptr;
1357
1358 // try setting to version string's supported version
1359 if(InitError == -2)
1360 {
1361 g_Config.m_GfxGLMajor = m_Capabilites.m_ContextMajor;
1362 g_Config.m_GfxGLMinor = m_Capabilites.m_ContextMinor;
1363 g_Config.m_GfxGLPatch = m_Capabilites.m_ContextPatch;
1364 }
1365
1366 if(pErrorStr != NULL)
1367 {
1368 str_copy(dst&: m_aErrorString, src: pErrorStr);
1369 }
1370
1371 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_GL_VERSION_FAILED;
1372 }
1373
1374 {
1375 CCommandBuffer::SCommand_Update_Viewport CmdSDL2;
1376 CmdSDL2.m_X = 0;
1377 CmdSDL2.m_Y = 0;
1378
1379 CmdSDL2.m_Width = *pCurrentWidth;
1380 CmdSDL2.m_Height = *pCurrentHeight;
1381 CmdSDL2.m_ByResize = true;
1382 CmdBuffer.AddCommandUnsafe(Command: CmdSDL2);
1383 RunBuffer(pBuffer: &CmdBuffer);
1384 WaitForIdle();
1385 CmdBuffer.Reset();
1386 }
1387
1388 // return
1389 return EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_NONE;
1390}
1391
1392int CGraphicsBackend_SDL_GL::Shutdown()
1393{
1394 // issue a shutdown command
1395 CCommandBuffer CmdBuffer(1024, 512);
1396 CCommandProcessorFragment_GLBase::SCommand_Shutdown CmdGL;
1397 CmdBuffer.AddCommandUnsafe(Command: CmdGL);
1398 RunBuffer(pBuffer: &CmdBuffer);
1399 WaitForIdle();
1400 CmdBuffer.Reset();
1401
1402 CCommandProcessorFragment_SDL::SCommand_Shutdown Cmd;
1403 CmdBuffer.AddCommandUnsafe(Command: Cmd);
1404 RunBuffer(pBuffer: &CmdBuffer);
1405 WaitForIdle();
1406 CmdBuffer.Reset();
1407
1408 CCommandProcessorFragment_GLBase::SCommand_PostShutdown CmdPost;
1409 CmdBuffer.AddCommandUnsafe(Command: CmdPost);
1410 RunBufferSingleThreadedUnsafe(pBuffer: &CmdBuffer);
1411 CmdBuffer.Reset();
1412
1413 // stop and delete the processor
1414 StopProcessor();
1415 delete m_pProcessor;
1416 m_pProcessor = nullptr;
1417
1418 if(m_GLContext != nullptr)
1419 SDL_GL_DeleteContext(context: m_GLContext);
1420 SDL_DestroyWindow(window: m_pWindow);
1421 m_pWindow = nullptr;
1422
1423 SDL_QuitSubSystem(SDL_INIT_VIDEO);
1424 return 0;
1425}
1426
1427uint64_t CGraphicsBackend_SDL_GL::TextureMemoryUsage() const
1428{
1429 return m_TextureMemoryUsage;
1430}
1431
1432uint64_t CGraphicsBackend_SDL_GL::BufferMemoryUsage() const
1433{
1434 return m_BufferMemoryUsage;
1435}
1436
1437uint64_t CGraphicsBackend_SDL_GL::StreamedMemoryUsage() const
1438{
1439 return m_StreamMemoryUsage;
1440}
1441
1442uint64_t CGraphicsBackend_SDL_GL::StagingMemoryUsage() const
1443{
1444 return m_StagingMemoryUsage;
1445}
1446
1447const TTwGraphicsGpuList &CGraphicsBackend_SDL_GL::GetGpus() const
1448{
1449 return m_GpuList;
1450}
1451
1452void CGraphicsBackend_SDL_GL::Minimize()
1453{
1454 SDL_MinimizeWindow(window: m_pWindow);
1455}
1456
1457void CGraphicsBackend_SDL_GL::Maximize()
1458{
1459 // TODO: SDL
1460}
1461
1462void CGraphicsBackend_SDL_GL::SetWindowParams(int FullscreenMode, bool IsBorderless)
1463{
1464 if(FullscreenMode > 0)
1465 {
1466 bool IsDesktopFullscreen = FullscreenMode == 2;
1467#ifndef CONF_FAMILY_WINDOWS
1468 // special mode for windows only
1469 IsDesktopFullscreen |= FullscreenMode == 3;
1470#endif
1471 if(FullscreenMode == 1)
1472 {
1473#if defined(CONF_PLATFORM_MACOS) || defined(CONF_PLATFORM_HAIKU)
1474 // Todo SDL: remove this when fixed (game freezes when losing focus in fullscreen)
1475 SDL_SetWindowFullscreen(m_pWindow, SDL_WINDOW_FULLSCREEN_DESKTOP);
1476#else
1477 SDL_SetWindowFullscreen(window: m_pWindow, flags: SDL_WINDOW_FULLSCREEN);
1478#endif
1479 SDL_SetWindowResizable(window: m_pWindow, resizable: SDL_TRUE);
1480 }
1481 else if(IsDesktopFullscreen)
1482 {
1483 SDL_SetWindowFullscreen(window: m_pWindow, flags: SDL_WINDOW_FULLSCREEN_DESKTOP);
1484 SDL_SetWindowResizable(window: m_pWindow, resizable: SDL_TRUE);
1485 }
1486 else
1487 {
1488 SDL_SetWindowFullscreen(window: m_pWindow, flags: 0);
1489 SDL_SetWindowBordered(window: m_pWindow, bordered: SDL_TRUE);
1490 SDL_SetWindowResizable(window: m_pWindow, resizable: SDL_FALSE);
1491 SDL_DisplayMode DpMode;
1492 if(SDL_GetDesktopDisplayMode(displayIndex: g_Config.m_GfxScreen, mode: &DpMode) < 0)
1493 {
1494 dbg_msg(sys: "gfx", fmt: "unable to get display mode: %s", SDL_GetError());
1495 }
1496 else
1497 {
1498 ResizeWindow(w: DpMode.w, h: DpMode.h, RefreshRate: DpMode.refresh_rate);
1499 SDL_SetWindowPosition(window: m_pWindow, SDL_WINDOWPOS_CENTERED_DISPLAY(g_Config.m_GfxScreen), SDL_WINDOWPOS_CENTERED_DISPLAY(g_Config.m_GfxScreen));
1500 }
1501 }
1502 }
1503 else
1504 {
1505 SDL_SetWindowFullscreen(window: m_pWindow, flags: 0);
1506 SDL_SetWindowBordered(window: m_pWindow, bordered: SDL_bool(!IsBorderless));
1507 SDL_SetWindowResizable(window: m_pWindow, resizable: SDL_TRUE);
1508 }
1509}
1510
1511bool CGraphicsBackend_SDL_GL::SetWindowScreen(int Index)
1512{
1513 if(Index < 0 || Index >= m_NumScreens)
1514 {
1515 return false;
1516 }
1517
1518 SDL_Rect ScreenPos;
1519 if(SDL_GetDisplayBounds(displayIndex: Index, rect: &ScreenPos) != 0)
1520 {
1521 return false;
1522 }
1523 // Todo SDL: remove this when fixed (changing screen when in fullscreen is bugged)
1524 SDL_SetWindowBordered(window: m_pWindow, bordered: SDL_TRUE); //fixing primary monitor goes black when switch screen (borderless OpenGL)
1525
1526 SDL_SetWindowPosition(window: m_pWindow,
1527 SDL_WINDOWPOS_CENTERED_DISPLAY(Index),
1528 SDL_WINDOWPOS_CENTERED_DISPLAY(Index));
1529
1530 return UpdateDisplayMode(Index);
1531}
1532
1533bool CGraphicsBackend_SDL_GL::UpdateDisplayMode(int Index)
1534{
1535 SDL_DisplayMode DisplayMode;
1536 if(SDL_GetDesktopDisplayMode(displayIndex: Index, mode: &DisplayMode) < 0)
1537 {
1538 dbg_msg(sys: "gfx", fmt: "unable to get display mode: %s", SDL_GetError());
1539 return false;
1540 }
1541
1542 g_Config.m_GfxScreen = Index;
1543 g_Config.m_GfxDesktopWidth = DisplayMode.w;
1544 g_Config.m_GfxDesktopHeight = DisplayMode.h;
1545
1546 return true;
1547}
1548
1549int CGraphicsBackend_SDL_GL::GetWindowScreen()
1550{
1551 return SDL_GetWindowDisplayIndex(window: m_pWindow);
1552}
1553
1554int CGraphicsBackend_SDL_GL::WindowActive()
1555{
1556 return m_pWindow && SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_INPUT_FOCUS;
1557}
1558
1559int CGraphicsBackend_SDL_GL::WindowOpen()
1560{
1561 return m_pWindow && SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_SHOWN;
1562}
1563
1564void CGraphicsBackend_SDL_GL::SetWindowGrab(bool Grab)
1565{
1566 SDL_SetWindowGrab(window: m_pWindow, grabbed: Grab ? SDL_TRUE : SDL_FALSE);
1567}
1568
1569bool CGraphicsBackend_SDL_GL::ResizeWindow(int w, int h, int RefreshRate)
1570{
1571 // don't call resize events when the window is at fullscreen desktop
1572 if(!m_pWindow || (SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN_DESKTOP)
1573 return false;
1574
1575 // if the window is at fullscreen use SDL_SetWindowDisplayMode instead, suggested by SDL
1576 if(SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_FULLSCREEN)
1577 {
1578#ifdef CONF_FAMILY_WINDOWS
1579 // in windows make the window windowed mode first, this prevents strange window glitches (other games probably do something similar)
1580 SetWindowParams(0, true);
1581#endif
1582 SDL_DisplayMode SetMode = {};
1583 SDL_DisplayMode ClosestMode = {};
1584 SetMode.format = 0;
1585 SetMode.w = w;
1586 SetMode.h = h;
1587 SetMode.refresh_rate = RefreshRate;
1588 SDL_SetWindowDisplayMode(window: m_pWindow, mode: SDL_GetClosestDisplayMode(displayIndex: g_Config.m_GfxScreen, mode: &SetMode, closest: &ClosestMode));
1589#ifdef CONF_FAMILY_WINDOWS
1590 // now change it back to fullscreen, this will restore the above set state, bcs SDL saves fullscreen modes apart from other video modes (as of SDL 2.0.16)
1591 // see implementation of SDL_SetWindowDisplayMode
1592 SetWindowParams(1, false);
1593#endif
1594 return true;
1595 }
1596 else
1597 {
1598 SDL_SetWindowSize(window: m_pWindow, w, h);
1599 if(SDL_GetWindowFlags(window: m_pWindow) & SDL_WINDOW_MAXIMIZED)
1600 // remove maximize flag
1601 SDL_RestoreWindow(window: m_pWindow);
1602 }
1603
1604 return false;
1605}
1606
1607void CGraphicsBackend_SDL_GL::GetViewportSize(int &w, int &h)
1608{
1609 SDL_GL_GetDrawableSize(window: m_pWindow, w: &w, h: &h);
1610}
1611
1612void CGraphicsBackend_SDL_GL::NotifyWindow()
1613{
1614 // Minimum version 2.0.16, after version 2.0.22 the naming is changed to 2.24.0 etc.
1615#if SDL_MAJOR_VERSION > 2 || (SDL_MAJOR_VERSION == 2 && SDL_MINOR_VERSION == 0 && SDL_PATCHLEVEL >= 16) || (SDL_MAJOR_VERSION == 2 && SDL_MINOR_VERSION > 0)
1616 if(SDL_FlashWindow(window: m_pWindow, operation: SDL_FlashOperation::SDL_FLASH_UNTIL_FOCUSED) != 0)
1617 {
1618 // fails if SDL hasn't implemented it
1619 return;
1620 }
1621#endif
1622}
1623
1624void CGraphicsBackend_SDL_GL::WindowDestroyNtf(uint32_t WindowId)
1625{
1626}
1627
1628void CGraphicsBackend_SDL_GL::WindowCreateNtf(uint32_t WindowId)
1629{
1630 m_pWindow = SDL_GetWindowFromID(id: WindowId);
1631}
1632
1633TGLBackendReadPresentedImageData &CGraphicsBackend_SDL_GL::GetReadPresentedImageDataFuncUnsafe()
1634{
1635 return m_ReadPresentedImageDataFunc;
1636}
1637
1638IGraphicsBackend *CreateGraphicsBackend(TTranslateFunc &&TranslateFunc) { return new CGraphicsBackend_SDL_GL(std::move(TranslateFunc)); }
1639