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0024023: Revamp the OCCT Handle -- general
[occt.git] / src / OpenGl / OpenGl_Window.cxx
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b311480e 1// Created on: 2011-09-20
2// Created by: Sergey ZERCHANINOV
973c2be1 3// Copyright (c) 2011-2014 OPEN CASCADE SAS
b311480e 4//
973c2be1 5// This file is part of Open CASCADE Technology software library.
b311480e 6//
d5f74e42 7// This library is free software; you can redistribute it and/or modify it under
8// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 9// by the Free Software Foundation, with special exception defined in the file
10// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11// distribution for complete text of the license and disclaimer of any warranty.
b311480e 12//
973c2be1 13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
b311480e 15
b5ac8292 16#include <OpenGl_GlCore12.hxx>
2166f0fa
SK		 17#include <InterfaceGraphic.hxx>
18
2166f0fa 19#include <OpenGl_Context.hxx>
25b97fac 20#include <OpenGl_GraphicDriver.hxx>
c827ea3a 21#include <OpenGl_Window.hxx>
22#include <OpenGl_Utils.hxx>
2166f0fa
SK		 23
24#include <Aspect_GraphicDeviceDefinitionError.hxx>
25#include <TCollection_AsciiString.hxx>
b5ac8292 26#include <TCollection_ExtendedString.hxx>
c04c30b3 27#include <Graphic3d_GraphicDriver.hxx>
2166f0fa 28
25b97fac 29#if defined(HAVE_EGL) || defined(__ANDROID__)
30 #include <EGL/egl.h>
31#endif
32
2166f0fa 33
4fe56619 34#if !defined(__APPLE__) || defined(MACOSX_USE_GLX)
35
2166f0fa
SK		 36namespace
37{
2166f0fa 38
25b97fac 39#if defined(HAVE_EGL) || defined(__ANDROID__)
40 //
41#elif defined(_WIN32)
58655684 42
abe46077 43 // WGL_ARB_pixel_format
44#ifndef WGL_NUMBER_PIXEL_FORMATS_ARB
45 #define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
46 #define WGL_DRAW_TO_WINDOW_ARB 0x2001
47 #define WGL_DRAW_TO_BITMAP_ARB 0x2002
48 #define WGL_ACCELERATION_ARB 0x2003
49 #define WGL_NEED_PALETTE_ARB 0x2004
50 #define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
51 #define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
52 #define WGL_SWAP_METHOD_ARB 0x2007
53 #define WGL_NUMBER_OVERLAYS_ARB 0x2008
54 #define WGL_NUMBER_UNDERLAYS_ARB 0x2009
55 #define WGL_TRANSPARENT_ARB 0x200A
56 #define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
57 #define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
58 #define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
59 #define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
60 #define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
61 #define WGL_SHARE_DEPTH_ARB 0x200C
62 #define WGL_SHARE_STENCIL_ARB 0x200D
63 #define WGL_SHARE_ACCUM_ARB 0x200E
64 #define WGL_SUPPORT_GDI_ARB 0x200F
65 #define WGL_SUPPORT_OPENGL_ARB 0x2010
66 #define WGL_DOUBLE_BUFFER_ARB 0x2011
67 #define WGL_STEREO_ARB 0x2012
68 #define WGL_PIXEL_TYPE_ARB 0x2013
69 #define WGL_COLOR_BITS_ARB 0x2014
70 #define WGL_RED_BITS_ARB 0x2015
71 #define WGL_RED_SHIFT_ARB 0x2016
72 #define WGL_GREEN_BITS_ARB 0x2017
73 #define WGL_GREEN_SHIFT_ARB 0x2018
74 #define WGL_BLUE_BITS_ARB 0x2019
75 #define WGL_BLUE_SHIFT_ARB 0x201A
76 #define WGL_ALPHA_BITS_ARB 0x201B
77 #define WGL_ALPHA_SHIFT_ARB 0x201C
78 #define WGL_ACCUM_BITS_ARB 0x201D
79 #define WGL_ACCUM_RED_BITS_ARB 0x201E
80 #define WGL_ACCUM_GREEN_BITS_ARB 0x201F
81 #define WGL_ACCUM_BLUE_BITS_ARB 0x2020
82 #define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
83 #define WGL_DEPTH_BITS_ARB 0x2022
84 #define WGL_STENCIL_BITS_ARB 0x2023
85 #define WGL_AUX_BUFFERS_ARB 0x2024
86
87 #define WGL_NO_ACCELERATION_ARB 0x2025
88 #define WGL_GENERIC_ACCELERATION_ARB 0x2026
89 #define WGL_FULL_ACCELERATION_ARB 0x2027
90
91 #define WGL_SWAP_EXCHANGE_ARB 0x2028
92 #define WGL_SWAP_COPY_ARB 0x2029
93 #define WGL_SWAP_UNDEFINED_ARB 0x202A
94
95 #define WGL_TYPE_RGBA_ARB 0x202B
96 #define WGL_TYPE_COLORINDEX_ARB 0x202C
97#endif // WGL_NUMBER_PIXEL_FORMATS_ARB
98
58655684 99 // WGL_ARB_create_context_profile
100#ifndef WGL_CONTEXT_MAJOR_VERSION_ARB
101 #define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
102 #define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
103 #define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
104 #define WGL_CONTEXT_FLAGS_ARB 0x2094
105 #define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
106
107 // WGL_CONTEXT_FLAGS bits
108 #define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
109 #define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
110
111 // WGL_CONTEXT_PROFILE_MASK_ARB bits
112 #define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001
113 #define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002
114#endif // WGL_CONTEXT_MAJOR_VERSION_ARB
115
116 static LRESULT CALLBACK wndProcDummy (HWND theWin, UINT theMsg, WPARAM theParamW, LPARAM theParamL)
117 {
118 return DefWindowProcW (theWin, theMsg, theParamW, theParamL);
119 }
2166f0fa
SK		 120#else
121 static Bool WaitForNotify (Display* theDisp, XEvent* theEv, char* theArg)
122 {
123 return (theEv->type == MapNotify) && (theEv->xmap.window == (Window )theArg);
124 }
125#endif
126
5640d653 127}
2166f0fa
SK		 128
129// =======================================================================
130// function : OpenGl_Window
131// purpose :
132// =======================================================================
25b97fac 133OpenGl_Window::OpenGl_Window (const Handle(OpenGl_GraphicDriver)& theDriver,
2166f0fa 134 const CALL_DEF_WINDOW& theCWindow,
5e27df78 135 Aspect_RenderingContext theGContext,
58655684 136 const Handle(OpenGl_Caps)& theCaps,
5e27df78 137 const Handle(OpenGl_Context)& theShareCtx)
73192b37 138: myGlContext (new OpenGl_Context (theCaps)),
2166f0fa 139 myOwnGContext (theGContext == 0),
e3573bb9 140 myWidth (theCWindow.dx),
141 myHeight (theCWindow.dy),
f978241f 142 mySwapInterval (theCaps->swapInterval)
2166f0fa
SK		 143{
144 myBgColor.rgb[0] = theCWindow.Background.r;
145 myBgColor.rgb[1] = theCWindow.Background.g;
146 myBgColor.rgb[2] = theCWindow.Background.b;
f8ae3605 147 myBgColor.rgb[3] = 1.0f;
2166f0fa 148
4e1523ef 149 Standard_Boolean isCoreProfile = Standard_False;
150
25b97fac 151#if defined(HAVE_EGL) || defined(__ANDROID__)
152 EGLDisplay anEglDisplay = (EGLDisplay )theDriver->getRawGlDisplay();
153 EGLContext anEglContext = (EGLContext )theDriver->getRawGlContext();
154 EGLConfig anEglConfig = (EGLConfig )theDriver->getRawGlConfig();
155 if (anEglDisplay == EGL_NO_DISPLAY
156 || anEglContext == EGL_NO_CONTEXT
157 || anEglConfig == NULL)
158 {
159 Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL does not provide compatible configurations!");
160 return;
161 }
162
163 EGLSurface anEglSurf = EGL_NO_SURFACE;
164 if (theGContext == (EGLContext )EGL_NO_CONTEXT)
165 {
166 // create new surface
167 anEglSurf = eglCreateWindowSurface (anEglDisplay, anEglConfig, (EGLNativeWindowType )theCWindow.XWindow, NULL);
168 if (anEglSurf == EGL_NO_SURFACE)
169 {
170 Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL is unable to create surface for window!");
171 return;
172 }
173 }
174 else if (theGContext != anEglContext)
175 {
176 Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL is used in unsupported combination!");
177 return;
178 }
179 else
180 {
181 anEglSurf = eglGetCurrentSurface(EGL_DRAW);
182 if (anEglSurf == EGL_NO_SURFACE)
183 {
184 Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL is unable to retrieve current surface!");
185 return;
186 }
187 }
188
4e1523ef 189 myGlContext->Init ((Aspect_Drawable )anEglSurf, (Aspect_Display )anEglDisplay, (Aspect_RenderingContext )anEglContext, isCoreProfile);
25b97fac 190#elif defined(_WIN32)
191 (void )theDriver;
5e27df78 192 HWND aWindow = (HWND )theCWindow.XWindow;
193 HDC aWindowDC = GetDC (aWindow);
194 HGLRC aGContext = (HGLRC )theGContext;
195
3d8969b1 196 PIXELFORMATDESCRIPTOR aPixelFrmt;
abe46077 197 memset (&aPixelFrmt, 0, sizeof(aPixelFrmt));
198 aPixelFrmt.nSize = sizeof(PIXELFORMATDESCRIPTOR);
199 aPixelFrmt.nVersion = 1;
200 aPixelFrmt.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
201 aPixelFrmt.iPixelType = PFD_TYPE_RGBA;
202 aPixelFrmt.cColorBits = 24;
203 aPixelFrmt.cDepthBits = 24;
204 aPixelFrmt.cStencilBits = 8;
205 aPixelFrmt.iLayerType = PFD_MAIN_PLANE;
206 if (theCaps->contextStereo)
207 {
208 aPixelFrmt.dwFlags |= PFD_STEREO;
209 }
210
211 int aPixelFrmtId = ChoosePixelFormat (aWindowDC, &aPixelFrmt);
b5ac8292 212
213 // in case of failure try without stereo if any
4e1523ef 214 const Standard_Boolean hasStereo = aPixelFrmtId != 0 && theCaps->contextStereo;
b5ac8292 215 if (aPixelFrmtId == 0 && theCaps->contextStereo)
216 {
217 TCollection_ExtendedString aMsg ("OpenGl_Window::CreateWindow: "
218 "ChoosePixelFormat is unable to find stereo supported pixel format. "
219 "Choosing similar non stereo format.");
220 myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
221 GL_DEBUG_TYPE_OTHER_ARB,
222 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMsg);
223
224 aPixelFrmt.dwFlags &= ~PFD_STEREO;
225 aPixelFrmtId = ChoosePixelFormat (aWindowDC, &aPixelFrmt);
226 }
227
3d8969b1 228 if (aPixelFrmtId == 0)
5e27df78 229 {
230 ReleaseDC (aWindow, aWindowDC);
231
232 TCollection_AsciiString aMsg ("OpenGl_Window::CreateWindow: ChoosePixelFormat failed. Error code: ");
233 aMsg += (int )GetLastError();
234 Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString());
235 return;
236 }
237
abe46077 238 DescribePixelFormat (aWindowDC, aPixelFrmtId, sizeof(aPixelFrmt), &aPixelFrmt);
5e27df78 239
58655684 240 HGLRC aSlaveCtx = !theShareCtx.IsNull() ? (HGLRC )theShareCtx->myGContext : NULL;
5e27df78 241 if (aGContext == NULL)
242 {
58655684 243 // create temporary context to retrieve advanced context creation procedures
244 HMODULE aModule = GetModuleHandleW(NULL);
245 WNDCLASSW aClass; memset (&aClass, 0, sizeof(aClass));
246 aClass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
247 aClass.lpfnWndProc = wndProcDummy;
248 aClass.hInstance = aModule;
249 aClass.lpszClassName = L"OpenGl_WindowTmp";
250 HWND aWinTmp = NULL;
251 HDC aDevCtxTmp = NULL;
252 HGLRC aRendCtxTmp = NULL;
4e1523ef 253 if ((!theCaps->contextDebug && !theCaps->contextNoAccel && theCaps->contextCompatible)
58655684 254 || RegisterClassW (&aClass) == 0)
255 {
256 aClass.lpszClassName = NULL;
257 }
258 if (aClass.lpszClassName != NULL)
259 {
229c0b6a 260 DWORD anExStyle = WS_EX_TOOLWINDOW | WS_EX_WINDOWEDGE;
261 #if (_WIN32_WINNT >= 0x0500)
262 anExStyle |= WS_EX_NOACTIVATE;
263 #endif
264 aWinTmp = CreateWindowExW(anExStyle,
58655684 265 aClass.lpszClassName, L"OpenGl_WindowTmp",
266 WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_DISABLED,
267 2, 2, 4, 4,
268 NULL, NULL, aModule, NULL);
269 }
270 if (aWinTmp != NULL)
271 {
272 aDevCtxTmp = GetDC (aWinTmp);
273 SetPixelFormat (aDevCtxTmp, aPixelFrmtId, &aPixelFrmt);
274 aRendCtxTmp = wglCreateContext (aDevCtxTmp);
275 }
abe46077 276
277 typedef BOOL (WINAPI *wglChoosePixelFormatARB_t)(HDC theDevCtx,
278 const int* theIntAttribs,
279 const float* theFloatAttribs,
280 unsigned int theMaxFormats,
281 int* theFormatsOut,
282 unsigned int* theNumFormatsOut);
283 typedef HGLRC (WINAPI *wglCreateContextAttribsARB_t)(HDC theDevCtx,
284 HGLRC theShareContext,
285 const int* theAttribs);
286 wglChoosePixelFormatARB_t aChoosePixProc = NULL;
287 wglCreateContextAttribsARB_t aCreateCtxProc = NULL;
58655684 288 if (aRendCtxTmp != NULL)
289 {
290 wglMakeCurrent (aDevCtxTmp, aRendCtxTmp);
291
292 typedef const char* (WINAPI *wglGetExtensionsStringARB_t)(HDC theDeviceContext);
abe46077 293 wglGetExtensionsStringARB_t aGetExtensions = (wglGetExtensionsStringARB_t )wglGetProcAddress ("wglGetExtensionsStringARB");
294 const char* aWglExts = (aGetExtensions != NULL) ? aGetExtensions (wglGetCurrentDC()) : NULL;
295 if (OpenGl_Context::CheckExtension (aWglExts, "WGL_ARB_pixel_format"))
296 {
297 aChoosePixProc = (wglChoosePixelFormatARB_t )wglGetProcAddress ("wglChoosePixelFormatARB");
298 }
299 if (OpenGl_Context::CheckExtension (aWglExts, "WGL_ARB_create_context_profile"))
300 {
301 aCreateCtxProc = (wglCreateContextAttribsARB_t )wglGetProcAddress ("wglCreateContextAttribsARB");
302 }
303 }
304
305 // choose extended pixel format
306 if (aChoosePixProc != NULL)
307 {
308 const int aPixAttribs[] =
309 {
310 WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
311 WGL_SUPPORT_OPENGL_ARB, GL_TRUE,
312 WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
4e1523ef 313 WGL_STEREO_ARB, hasStereo ? GL_TRUE : GL_FALSE,
abe46077 314 WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
315 //WGL_SAMPLE_BUFFERS_ARB, 1,
316 //WGL_SAMPLES_ARB, 8,
317 WGL_COLOR_BITS_ARB, 24,
318 WGL_DEPTH_BITS_ARB, 24,
319 WGL_STENCIL_BITS_ARB, 8,
320 WGL_ACCELERATION_ARB, theCaps->contextNoAccel ? WGL_NO_ACCELERATION_ARB : WGL_FULL_ACCELERATION_ARB,
321 0, 0,
322 };
323 unsigned int aFrmtsNb = 0;
324 aChoosePixProc (aWindowDC, aPixAttribs, NULL, 1, &aPixelFrmtId, &aFrmtsNb);
325 }
326
327 // setup pixel format - may be set only once per window
328 if (!SetPixelFormat (aWindowDC, aPixelFrmtId, &aPixelFrmt))
329 {
330 ReleaseDC (aWindow, aWindowDC);
331
332 TCollection_AsciiString aMsg("OpenGl_Window::CreateWindow: SetPixelFormat failed. Error code: ");
333 aMsg += (int )GetLastError();
334 Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString());
335 return;
336 }
337
338 // create GL context with extra options
339 if (aCreateCtxProc != NULL)
340 {
4e1523ef 341 if (!theCaps->contextCompatible)
abe46077 342 {
4e1523ef 343 int aCoreCtxAttribs[] =
344 {
345 WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
346 WGL_CONTEXT_MINOR_VERSION_ARB, 2,
347 WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
348 WGL_CONTEXT_FLAGS_ARB, theCaps->contextDebug ? WGL_CONTEXT_DEBUG_BIT_ARB : 0,
349 0, 0
350 };
351
352 // Try to create the core profile of highest OpenGL version supported by OCCT
353 // (this will be done automatically by some drivers when requesting 3.2,
354 // but some will not (e.g. AMD Catalyst) since WGL_ARB_create_context_profile specification allows both implementations).
355 for (int aLowVer4 = 5; aLowVer4 >= 0 && aGContext == NULL; --aLowVer4)
356 {
357 aCoreCtxAttribs[1] = 4;
358 aCoreCtxAttribs[3] = aLowVer4;
359 aGContext = aCreateCtxProc (aWindowDC, aSlaveCtx, aCoreCtxAttribs);
360 }
361 for (int aLowVer3 = 3; aLowVer3 >= 2 && aGContext == NULL; --aLowVer3)
362 {
363 aCoreCtxAttribs[1] = 3;
364 aCoreCtxAttribs[3] = aLowVer3;
365 aGContext = aCreateCtxProc (aWindowDC, aSlaveCtx, aCoreCtxAttribs);
366 }
367 isCoreProfile = aGContext != NULL;
368 }
369
370 if (aGContext == NULL)
371 {
372 int aCtxAttribs[] =
373 {
374 // Beware! NVIDIA drivers reject context creation when WGL_CONTEXT_PROFILE_MASK_ARB are specified
375 // but not WGL_CONTEXT_MAJOR_VERSION_ARB/WGL_CONTEXT_MINOR_VERSION_ARB.
376 //WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
377 WGL_CONTEXT_FLAGS_ARB, theCaps->contextDebug ? WGL_CONTEXT_DEBUG_BIT_ARB : 0,
378 0, 0
379 };
380 isCoreProfile = Standard_False;
381 aGContext = aCreateCtxProc (aWindowDC, aSlaveCtx, aCtxAttribs);
382
383 if (aGContext != NULL
384 && !theCaps->contextCompatible)
385 {
386 TCollection_ExtendedString aMsg("OpenGl_Window::CreateWindow: core profile creation failed.");
387 myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, GL_DEBUG_TYPE_PORTABILITY_ARB, 0, GL_DEBUG_SEVERITY_LOW_ARB, aMsg);
388 }
389 }
abe46077 390
abe46077 391 if (aGContext != NULL)
58655684 392 {
abe46077 393 aSlaveCtx = NULL;
58655684 394 }
395 }
396
397 if (aRendCtxTmp != NULL)
398 {
399 wglDeleteContext (aRendCtxTmp);
400 }
401 if (aDevCtxTmp != NULL)
402 {
403 ReleaseDC (aWinTmp, aDevCtxTmp);
404 }
405 if (aWinTmp != NULL)
406 {
407 DestroyWindow (aWinTmp);
408 }
409 if (aClass.lpszClassName != NULL)
410 {
411 UnregisterClassW (aClass.lpszClassName, aModule);
412 }
413
414 if (aGContext == NULL)
415 {
abe46077 416 // create context using obsolete functionality
58655684 417 aGContext = wglCreateContext (aWindowDC);
418 }
5e27df78 419 if (aGContext == NULL)
420 {
421 ReleaseDC (aWindow, aWindowDC);
422
423 TCollection_AsciiString aMsg ("OpenGl_Window::CreateWindow: wglCreateContext failed. Error code: ");
424 aMsg += (int )GetLastError();
425 Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString());
426 return;
427 }
428 }
429
430 // all GL context within one OpenGl_GraphicDriver should be shared!
58655684 431 if (aSlaveCtx != NULL && wglShareLists (aSlaveCtx, aGContext) != TRUE)
5e27df78 432 {
433 TCollection_AsciiString aMsg ("OpenGl_Window::CreateWindow: wglShareLists failed. Error code: ");
434 aMsg += (int )GetLastError();
435 Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString());
436 return;
437 }
438
4e1523ef 439 myGlContext->Init ((Aspect_Handle )aWindow, (Aspect_Handle )aWindowDC, (Aspect_RenderingContext )aGContext, isCoreProfile);
5e27df78 440#else
eaf5c5e0 441 Window aParent = (Window )theCWindow.XWindow;
442 Window aWindow = 0;
443
25b97fac 444 Display* aDisp = theDriver->GetDisplayConnection()->GetDisplay();
5e27df78 445 GLXContext aGContext = (GLXContext )theGContext;
2166f0fa 446
2166f0fa
SK		 447 XWindowAttributes wattr;
448 XGetWindowAttributes (aDisp, aParent, &wattr);
449 const int scr = DefaultScreen (aDisp);
450
451 XVisualInfo* aVis = NULL;
452 {
453 unsigned long aVisInfoMask = VisualIDMask | VisualScreenMask;
454 XVisualInfo aVisInfo;
455 aVisInfo.visualid = wattr.visual->visualid;
456 aVisInfo.screen = scr;
457 int aNbItems;
458 aVis = XGetVisualInfo (aDisp, aVisInfoMask, &aVisInfo, &aNbItems);
459 }
460
95db72f1 461#if defined(__linux) || defined(Linux) || defined(__APPLE__)
462 if (aVis != NULL)
2166f0fa 463 {
95db72f1 464 // check Visual for OpenGl context's parameters compatibility
465 int isGl = 0, isDoubleBuffer = 0, isRGBA = 0, isStereo = 0;
466 int aDepthSize = 0, aStencilSize = 0;
2166f0fa 467
95db72f1 468 if (glXGetConfig (aDisp, aVis, GLX_USE_GL, &isGl) != 0)
469 isGl = 0;
2166f0fa 470
95db72f1 471 if (glXGetConfig (aDisp, aVis, GLX_RGBA, &isRGBA) != 0)
472 isRGBA = 0;
2166f0fa 473
95db72f1 474 if (glXGetConfig (aDisp, aVis, GLX_DOUBLEBUFFER, &isDoubleBuffer) != 0)
475 isDoubleBuffer = 0;
2166f0fa 476
95db72f1 477 if (glXGetConfig (aDisp, aVis, GLX_STEREO, &isStereo) != 0)
478 isStereo = 0;
b5ac8292 479
95db72f1 480 if (glXGetConfig (aDisp, aVis, GLX_DEPTH_SIZE, &aDepthSize) != 0)
481 aDepthSize = 0;
2166f0fa 482
95db72f1 483 if (glXGetConfig (aDisp, aVis, GLX_STENCIL_SIZE, &aStencilSize) != 0)
484 aStencilSize = 0;
3d8969b1 485
95db72f1 486 if (!isGl)
487 {
488 XFree (aVis);
489 aVis = NULL;
490 if (myOwnGContext)
491 {
492 TCollection_ExtendedString aMsg ("OpenGl_Window::CreateWindow: window Visual does not support GL rendering!");
493 myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
494 GL_DEBUG_TYPE_OTHER_ARB,
495 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMsg);
496 }
497 }
498 else
499 {
500 TCollection_ExtendedString aList;
501 if (aDepthSize < 1)
502 {
503 if (!aList.IsEmpty()) aList += ", ";
504 aList += "no depth buffer";
505 }
506 if (aStencilSize < 1)
507 {
508 if (!aList.IsEmpty()) aList += ", ";
509 aList += "no stencil buffer";
510 }
511 if (isRGBA == 0)
512 {
513 if (!aList.IsEmpty()) aList += ", ";
514 aList += "no RGBA color buffer";
515 }
516 if (isDoubleBuffer == 0)
517 {
518 if (!aList.IsEmpty()) aList += ", ";
519 aList += "no Double Buffer";
520 }
521 if (theCaps->contextStereo && isStereo == 0)
522 {
523 if (!aList.IsEmpty()) aList += ", ";
524 aList += "no Quad Buffer";
525 }
526 if (!theCaps->contextStereo && isStereo == 1)
2166f0fa 527 {
95db72f1 528 if (!aList.IsEmpty()) aList += ", ";
529 aList += "extra Quad Buffer";
2166f0fa 530 }
95db72f1 531 if (!aList.IsEmpty())
532 {
533 TCollection_ExtendedString aMsg = TCollection_ExtendedString ("OpenGl_Window::CreateWindow: window Visual is incomplete: ") + aList;
534 if (myOwnGContext)
535 {
536 XFree (aVis);
537 aVis = NULL;
538 }
539 myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
540 GL_DEBUG_TYPE_OTHER_ARB,
541 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, aMsg);
542 }
543 }
544 }
545#endif
546
547 if (!myOwnGContext)
548 {
549 if (aVis == NULL)
550 {
551 Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window::CreateWindow: XGetVisualInfo is unable to choose needed configuration in existing OpenGL context. ");
552 return;
2166f0fa 553 }
2166f0fa 554
95db72f1 555 aWindow = aParent;
556 }
557 else
558 {
2166f0fa
SK		 559 if (aVis == NULL)
560 {
561 int anIter = 0;
3d8969b1 562 int anAttribs[13];
2166f0fa
SK		 563 anAttribs[anIter++] = GLX_RGBA;
564
565 anAttribs[anIter++] = GLX_DEPTH_SIZE;
566 anAttribs[anIter++] = 1;
567
3d8969b1 568 anAttribs[anIter++] = GLX_STENCIL_SIZE;
569 anAttribs[anIter++] = 1;
570
2166f0fa
SK		 571 anAttribs[anIter++] = GLX_RED_SIZE;
572 anAttribs[anIter++] = (wattr.depth <= 8) ? 0 : 1;
573
574 anAttribs[anIter++] = GLX_GREEN_SIZE;
575 anAttribs[anIter++] = (wattr.depth <= 8) ? 0 : 1;
576
577 anAttribs[anIter++] = GLX_BLUE_SIZE;
578 anAttribs[anIter++] = (wattr.depth <= 8) ? 0 : 1;
579
73192b37 580 anAttribs[anIter++] = GLX_DOUBLEBUFFER;
2166f0fa 581
b5ac8292 582 // warning: this flag may be set to None, so it need to be last in anAttribs
583 Standard_Integer aStereoFlagPos = anIter;
584 if (theCaps->contextStereo)
585 anAttribs[anIter++] = GLX_STEREO;
586
2166f0fa
SK		 587 anAttribs[anIter++] = None;
588
589 aVis = glXChooseVisual (aDisp, scr, anAttribs);
b5ac8292 590
591 // in case of failure try without stereo if any
592 if (aVis == NULL && theCaps->contextStereo)
593 {
594 TCollection_ExtendedString aMsg ("OpenGl_Window::CreateWindow: "
595 "glXChooseVisual is unable to find stereo supported pixel format. "
596 "Choosing similar non stereo format.");
597 myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
598 GL_DEBUG_TYPE_OTHER_ARB,
599 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMsg);
600
601 anAttribs[aStereoFlagPos] = None;
602 aVis = glXChooseVisual (aDisp, scr, anAttribs);
603 }
604
2166f0fa
SK		 605 if (aVis == NULL)
606 {
607 Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window::CreateWindow: glXChooseVisual failed.");
608 return;
609 }
95db72f1 610 else
611 {
612 TCollection_ExtendedString aMsg ("OpenGl_Window::CreateWindow: child window has been created with better Visual.");
613 myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
614 GL_DEBUG_TYPE_OTHER_ARB,
615 0, GL_DEBUG_SEVERITY_MEDIUM_ARB, aMsg);
616 }
2166f0fa
SK		 617 }
618
5e27df78 619 if (!theShareCtx.IsNull())
2166f0fa 620 {
5e27df78 621 // ctx est une copie du previous
622 aGContext = glXCreateContext (aDisp, aVis, (GLXContext )theShareCtx->myGContext, GL_TRUE);
2166f0fa
SK		 623 }
624 else
625 {
5e27df78 626 aGContext = glXCreateContext (aDisp, aVis, NULL, GL_TRUE);
2166f0fa
SK		 627 }
628
5e27df78 629 if (!aGContext)
2166f0fa
SK		 630 {
631 Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window::CreateWindow: glXCreateContext failed.");
632 return;
633 }
634
2166f0fa
SK		 635 Colormap cmap = XCreateColormap (aDisp, aParent, aVis->visual, AllocNone);
636
637 XColor color;
638 color.red = (unsigned short) (myBgColor.rgb[0] * 0xFFFF);
639 color.green = (unsigned short) (myBgColor.rgb[1] * 0xFFFF);
640 color.blue = (unsigned short) (myBgColor.rgb[2] * 0xFFFF);
641 color.flags = DoRed | DoGreen | DoBlue;
642 XAllocColor (aDisp, cmap, &color);
643
644 XSetWindowAttributes cwa;
645 cwa.colormap = cmap;
646 cwa.event_mask = StructureNotifyMask;
647 cwa.border_pixel = color.pixel;
648 cwa.background_pixel = color.pixel;
649
650 if (aVis->visualid == wattr.visual->visualid)
651 {
5e27df78 652 aWindow = aParent;
2166f0fa
SK		 653 }
654 else
655 {
656 unsigned long mask = CWBackPixel | CWColormap | CWBorderPixel | CWEventMask;
5e27df78 657 aWindow = XCreateWindow (aDisp, aParent, 0, 0, myWidth, myHeight, 0/*bw*/, aVis->depth, InputOutput, aVis->visual, mask, &cwa);
2166f0fa
SK		 658 }
659
5e27df78 660 XSetWindowBackground (aDisp, aWindow, cwa.background_pixel);
661 XClearWindow (aDisp, aWindow);
2166f0fa 662
5e27df78 663 if (aWindow != aParent)
2166f0fa
SK		 664 {
665 XEvent anEvent;
5e27df78 666 XMapWindow (aDisp, aWindow);
667 XIfEvent (aDisp, &anEvent, WaitForNotify, (char* )aWindow);
2166f0fa 668 }
2166f0fa
SK		 669 }
670
4e1523ef 671 myGlContext->Init ((Aspect_Drawable )aWindow, (Aspect_Display )aDisp, (Aspect_RenderingContext )aGContext, isCoreProfile);
2166f0fa 672#endif
5e27df78 673 myGlContext->Share (theShareCtx);
f978241f 674 myGlContext->SetSwapInterval (mySwapInterval);
2166f0fa 675 Init();
2166f0fa
SK		 676}
677
678// =======================================================================
679// function : ~OpenGl_Window
680// purpose :
681// =======================================================================
682OpenGl_Window::~OpenGl_Window()
683{
25b97fac 684 if (!myOwnGContext
685 || myGlContext.IsNull())
fd4a6963 686 {
687 myGlContext.Nullify();
688 return;
689 }
690
691 // release "GL" context if it is owned by window
544da5a4 692 // Mesa implementation can fail to destroy GL context if it set for current thread.
693 // It should be safer to unset thread GL context before its destruction.
25b97fac 694#if defined(HAVE_EGL) || defined(__ANDROID__)
695 if ((EGLSurface )myGlContext->myWindow != EGL_NO_SURFACE)
696 {
697 eglDestroySurface ((EGLDisplay )myGlContext->myDisplay,
698 (EGLSurface )myGlContext->myWindow);
699 }
700#elif defined(_WIN32)
fd4a6963 701 HWND aWindow = (HWND )myGlContext->myWindow;
702 HDC aWindowDC = (HDC )myGlContext->myWindowDC;
703 HGLRC aWindowGContext = (HGLRC )myGlContext->myGContext;
544da5a4 704 HGLRC aThreadGContext = wglGetCurrentContext();
5e27df78 705 myGlContext.Nullify();
2166f0fa 706
544da5a4 707 if (aThreadGContext != NULL)
2166f0fa 708 {
544da5a4 709 if (aThreadGContext == aWindowGContext)
2166f0fa 710 {
fd4a6963 711 wglMakeCurrent (NULL, NULL);
2166f0fa 712 }
fd4a6963 713
714 wglDeleteContext (aWindowGContext);
2166f0fa 715 }
fd4a6963 716 ReleaseDC (aWindow, aWindowDC);
5e27df78 717#else
544da5a4 718 Display* aDisplay = (Display* )myGlContext->myDisplay;
719 GLXContext aWindowGContext = (GLXContext )myGlContext->myGContext;
720 GLXContext aThreadGContext = glXGetCurrentContext();
5e27df78 721 myGlContext.Nullify();
722
fd4a6963 723 if (aDisplay != NULL)
2166f0fa 724 {
544da5a4 725 if (aThreadGContext == aWindowGContext)
726 {
727 glXMakeCurrent (aDisplay, None, NULL);
728 }
729
5e27df78 730 // FSXXX sync necessary if non-direct rendering
731 glXWaitGL();
544da5a4 732 glXDestroyContext (aDisplay, aWindowGContext);
2166f0fa
SK		 733 }
734#endif
735}
736
4fe56619 737#endif // !__APPLE__
738
2166f0fa
SK		 739// =======================================================================
740// function : Activate
741// purpose :
742// =======================================================================
743Standard_Boolean OpenGl_Window::Activate()
744{
86fa64d9 745 return myGlContext->MakeCurrent();
2166f0fa
SK		 746}
747
4fe56619 748#if !defined(__APPLE__) || defined(MACOSX_USE_GLX)
749
2166f0fa
SK		 750// =======================================================================
751// function : Resize
752// purpose : call_subr_resize
753// =======================================================================
754void OpenGl_Window::Resize (const CALL_DEF_WINDOW& theCWindow)
755{
25b97fac 756#if !defined(_WIN32) && !defined(HAVE_EGL) && !defined(__ANDROID__)
73192b37 757 Display* aDisp = (Display* )myGlContext->myDisplay;
2166f0fa
SK		 758 if (aDisp == NULL)
759 return;
73192b37 760#endif
2166f0fa
SK		 761
762 // If the size is not changed - do nothing
763 if ((myWidth == theCWindow.dx) && (myHeight == theCWindow.dy))
764 return;
765
e3573bb9 766 myWidth = theCWindow.dx;
767 myHeight = theCWindow.dy;
2166f0fa 768
25b97fac 769#if !defined(_WIN32) && !defined(HAVE_EGL) && !defined(__ANDROID__)
5e27df78 770 XResizeWindow (aDisp, myGlContext->myWindow, (unsigned int )myWidth, (unsigned int )myHeight);
2166f0fa
SK		 771 XSync (aDisp, False);
772#endif
773
774 Init();
775}
776
4fe56619 777#endif // !__APPLE__
778
2166f0fa
SK		 779// =======================================================================
780// function : ReadDepths
781// purpose : TelReadDepths
782// =======================================================================
783void OpenGl_Window::ReadDepths (const Standard_Integer theX, const Standard_Integer theY,
784 const Standard_Integer theWidth, const Standard_Integer theHeight,
785 float* theDepths)
786{
787 if (theDepths == NULL || !Activate())
788 return;
789
c827ea3a 790 OpenGl_Mat4 aProjectMat;
791 OpenGl_Utils::Ortho2D<Standard_ShortReal> (aProjectMat,
792 0.f, static_cast<GLfloat> (myWidth), 0.f, static_cast<GLfloat> (myHeight));
793
794 myGlContext->WorldViewState.Push();
795 myGlContext->ProjectionState.Push();
2166f0fa 796
c827ea3a 797 myGlContext->WorldViewState.SetIdentity();
798 myGlContext->ProjectionState.SetCurrent (aProjectMat);
799
800 myGlContext->ApplyProjectionMatrix();
801 myGlContext->ApplyWorldViewMatrix();
802
803#if !defined(GL_ES_VERSION_2_0)
2166f0fa
SK		 804 glRasterPos2i (theX, theY);
805 DisableFeatures();
806 glReadPixels (theX, theY, theWidth, theHeight, GL_DEPTH_COMPONENT, GL_FLOAT, theDepths);
807 EnableFeatures();
ca3c13d1 808#endif
c827ea3a 809
810 myGlContext->WorldViewState.Pop();
811 myGlContext->ProjectionState.Pop();
812
813 myGlContext->ApplyProjectionMatrix();
2166f0fa
SK		 814}
815
816// =======================================================================
817// function : SetBackgroundColor
818// purpose : call_subr_set_background
819// =======================================================================
820void OpenGl_Window::SetBackgroundColor (const Standard_ShortReal theR,
821 const Standard_ShortReal theG,
822 const Standard_ShortReal theB)
823{
824 myBgColor.rgb[0] = theR;
825 myBgColor.rgb[1] = theG;
826 myBgColor.rgb[2] = theB;
827}
828
4fe56619 829#if !defined(__APPLE__) || defined(MACOSX_USE_GLX)
830
2166f0fa
SK		 831// =======================================================================
832// function : Init
833// purpose :
834// =======================================================================
835void OpenGl_Window::Init()
836{
837 if (!Activate())
838 return;
839
25b97fac 840#if defined(HAVE_EGL) || defined(__ANDROID__)
e3573bb9 841 eglQuerySurface ((EGLDisplay )myGlContext->myDisplay, (EGLSurface )myGlContext->myWindow, EGL_WIDTH, &myWidth);
842 eglQuerySurface ((EGLDisplay )myGlContext->myDisplay, (EGLSurface )myGlContext->myWindow, EGL_HEIGHT, &myHeight);
25b97fac 843#elif defined(_WIN32)
2166f0fa 844 RECT cr;
5e27df78 845 GetClientRect ((HWND )myGlContext->myWindow, &cr);
2166f0fa
SK		 846 myWidth = cr.right - cr.left;
847 myHeight = cr.bottom - cr.top;
848#else
849 Window aRootWin;
850 int aDummy;
851 unsigned int aDummyU;
852 unsigned int aNewWidth = 0;
853 unsigned int aNewHeight = 0;
73192b37 854 Display* aDisp = (Display* )myGlContext->myDisplay;
5e27df78 855 XGetGeometry (aDisp, myGlContext->myWindow, &aRootWin, &aDummy, &aDummy, &aNewWidth, &aNewHeight, &aDummyU, &aDummyU);
2166f0fa
SK		 856 myWidth = aNewWidth;
857 myHeight = aNewHeight;
858#endif
859
5bd9ed93 860 glDisable (GL_DITHER);
ca3c13d1 861 glDisable (GL_SCISSOR_TEST);
e3573bb9 862 glViewport (0, 0, myWidth, myHeight);
ca3c13d1 863#if !defined(GL_ES_VERSION_2_0)
2166f0fa 864 glDrawBuffer (GL_BACK);
4e1523ef 865 if (myGlContext->core11 != NULL)
866 {
867 glMatrixMode (GL_MODELVIEW);
868 }
ca3c13d1 869#endif
2166f0fa
SK		 870}
871
4fe56619 872#endif // !__APPLE__
873
2166f0fa
SK		 874// =======================================================================
875// function : EnableFeatures
876// purpose :
877// =======================================================================
878void OpenGl_Window::EnableFeatures() const
879{
73192b37 880 //
2166f0fa
SK		 881}
882
883// =======================================================================
884// function : DisableFeatures
885// purpose :
886// =======================================================================
887void OpenGl_Window::DisableFeatures() const
888{
ca3c13d1 889#if !defined(GL_ES_VERSION_2_0)
2166f0fa 890 glPixelTransferi (GL_MAP_COLOR, GL_FALSE);
ca3c13d1 891#endif
2166f0fa
SK		 892
893 /*
894 * Disable stuff that's likely to slow down glDrawPixels.
895 * (Omit as much of this as possible, when you know in advance
896 * that the OpenGL state will already be set correctly.)
897 */
5bd9ed93 898 glDisable(GL_DITHER);
2166f0fa
SK		 899 glDisable(GL_BLEND);
900 glDisable(GL_DEPTH_TEST);
ca3c13d1 901 glDisable(GL_TEXTURE_2D);
902 glDisable(GL_STENCIL_TEST);
2166f0fa 903
ca3c13d1 904#if !defined(GL_ES_VERSION_2_0)
905 glDisable(GL_LIGHTING);
906 glDisable(GL_ALPHA_TEST);
907 glDisable(GL_FOG);
2166f0fa 908 glDisable(GL_LOGIC_OP);
2166f0fa 909 glDisable(GL_TEXTURE_1D);
ca3c13d1 910
2166f0fa
SK		 911 glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
912 glPixelTransferi(GL_RED_SCALE, 1);
913 glPixelTransferi(GL_RED_BIAS, 0);
914 glPixelTransferi(GL_GREEN_SCALE, 1);
915 glPixelTransferi(GL_GREEN_BIAS, 0);
916 glPixelTransferi(GL_BLUE_SCALE, 1);
917 glPixelTransferi(GL_BLUE_BIAS, 0);
918 glPixelTransferi(GL_ALPHA_SCALE, 1);
919 glPixelTransferi(GL_ALPHA_BIAS, 0);
920
921 /*
922 * Disable extensions that could slow down glDrawPixels.
923 * (Actually, you should check for the presence of the proper
924 * extension before making these calls. I've omitted that
925 * code for simplicity.)
926 */
927
b5ac8292 928 if ((myGlContext->myGlVerMajor >= 1) && (myGlContext->myGlVerMinor >= 2))
929 {
2166f0fa 930#ifdef GL_EXT_convolution
b5ac8292 931 if (myGlContext->CheckExtension ("GL_CONVOLUTION_1D_EXT"))
932 glDisable(GL_CONVOLUTION_1D_EXT);
933
934 if (myGlContext->CheckExtension ("GL_CONVOLUTION_2D_EXT"))
935 glDisable(GL_CONVOLUTION_2D_EXT);
936
937 if (myGlContext->CheckExtension ("GL_SEPARABLE_2D_EXT"))
938 glDisable(GL_SEPARABLE_2D_EXT);
2166f0fa
SK		 939#endif
940
941#ifdef GL_EXT_histogram
b5ac8292 942 if (myGlContext->CheckExtension ("GL_SEPARABLE_2D_EXT"))
943 glDisable(GL_HISTOGRAM_EXT);
944
945 if (myGlContext->CheckExtension ("GL_MINMAX_EXT"))
946 glDisable(GL_MINMAX_EXT);
2166f0fa
SK		 947#endif
948
949#ifdef GL_EXT_texture3D
b5ac8292 950 if (myGlContext->CheckExtension ("GL_TEXTURE_3D_EXT"))
951 glDisable(GL_TEXTURE_3D_EXT);
2166f0fa 952#endif
b5ac8292 953 }
ca3c13d1 954#endif
2166f0fa 955}
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