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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> |
2166f0fa | 27 | |
25b97fac | 28 | #if defined(HAVE_EGL) || defined(__ANDROID__) |
29 | #include <EGL/egl.h> | |
30 | #endif | |
31 | ||
2166f0fa SK |
32 | IMPLEMENT_STANDARD_HANDLE(OpenGl_Window,MMgt_TShared) |
33 | IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Window,MMgt_TShared) | |
34 | ||
4fe56619 | 35 | #if !defined(__APPLE__) || defined(MACOSX_USE_GLX) |
36 | ||
2166f0fa SK |
37 | namespace |
38 | { | |
39 | static const TEL_COLOUR THE_DEFAULT_BG_COLOR = { { 0.F, 0.F, 0.F, 1.F } }; | |
40 | ||
25b97fac | 41 | #if defined(HAVE_EGL) || defined(__ANDROID__) |
42 | // | |
43 | #elif defined(_WIN32) | |
58655684 | 44 | |
abe46077 | 45 | // WGL_ARB_pixel_format |
46 | #ifndef WGL_NUMBER_PIXEL_FORMATS_ARB | |
47 | #define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000 | |
48 | #define WGL_DRAW_TO_WINDOW_ARB 0x2001 | |
49 | #define WGL_DRAW_TO_BITMAP_ARB 0x2002 | |
50 | #define WGL_ACCELERATION_ARB 0x2003 | |
51 | #define WGL_NEED_PALETTE_ARB 0x2004 | |
52 | #define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005 | |
53 | #define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006 | |
54 | #define WGL_SWAP_METHOD_ARB 0x2007 | |
55 | #define WGL_NUMBER_OVERLAYS_ARB 0x2008 | |
56 | #define WGL_NUMBER_UNDERLAYS_ARB 0x2009 | |
57 | #define WGL_TRANSPARENT_ARB 0x200A | |
58 | #define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037 | |
59 | #define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038 | |
60 | #define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039 | |
61 | #define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A | |
62 | #define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B | |
63 | #define WGL_SHARE_DEPTH_ARB 0x200C | |
64 | #define WGL_SHARE_STENCIL_ARB 0x200D | |
65 | #define WGL_SHARE_ACCUM_ARB 0x200E | |
66 | #define WGL_SUPPORT_GDI_ARB 0x200F | |
67 | #define WGL_SUPPORT_OPENGL_ARB 0x2010 | |
68 | #define WGL_DOUBLE_BUFFER_ARB 0x2011 | |
69 | #define WGL_STEREO_ARB 0x2012 | |
70 | #define WGL_PIXEL_TYPE_ARB 0x2013 | |
71 | #define WGL_COLOR_BITS_ARB 0x2014 | |
72 | #define WGL_RED_BITS_ARB 0x2015 | |
73 | #define WGL_RED_SHIFT_ARB 0x2016 | |
74 | #define WGL_GREEN_BITS_ARB 0x2017 | |
75 | #define WGL_GREEN_SHIFT_ARB 0x2018 | |
76 | #define WGL_BLUE_BITS_ARB 0x2019 | |
77 | #define WGL_BLUE_SHIFT_ARB 0x201A | |
78 | #define WGL_ALPHA_BITS_ARB 0x201B | |
79 | #define WGL_ALPHA_SHIFT_ARB 0x201C | |
80 | #define WGL_ACCUM_BITS_ARB 0x201D | |
81 | #define WGL_ACCUM_RED_BITS_ARB 0x201E | |
82 | #define WGL_ACCUM_GREEN_BITS_ARB 0x201F | |
83 | #define WGL_ACCUM_BLUE_BITS_ARB 0x2020 | |
84 | #define WGL_ACCUM_ALPHA_BITS_ARB 0x2021 | |
85 | #define WGL_DEPTH_BITS_ARB 0x2022 | |
86 | #define WGL_STENCIL_BITS_ARB 0x2023 | |
87 | #define WGL_AUX_BUFFERS_ARB 0x2024 | |
88 | ||
89 | #define WGL_NO_ACCELERATION_ARB 0x2025 | |
90 | #define WGL_GENERIC_ACCELERATION_ARB 0x2026 | |
91 | #define WGL_FULL_ACCELERATION_ARB 0x2027 | |
92 | ||
93 | #define WGL_SWAP_EXCHANGE_ARB 0x2028 | |
94 | #define WGL_SWAP_COPY_ARB 0x2029 | |
95 | #define WGL_SWAP_UNDEFINED_ARB 0x202A | |
96 | ||
97 | #define WGL_TYPE_RGBA_ARB 0x202B | |
98 | #define WGL_TYPE_COLORINDEX_ARB 0x202C | |
99 | #endif // WGL_NUMBER_PIXEL_FORMATS_ARB | |
100 | ||
58655684 | 101 | // WGL_ARB_create_context_profile |
102 | #ifndef WGL_CONTEXT_MAJOR_VERSION_ARB | |
103 | #define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091 | |
104 | #define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092 | |
105 | #define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093 | |
106 | #define WGL_CONTEXT_FLAGS_ARB 0x2094 | |
107 | #define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126 | |
108 | ||
109 | // WGL_CONTEXT_FLAGS bits | |
110 | #define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001 | |
111 | #define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002 | |
112 | ||
113 | // WGL_CONTEXT_PROFILE_MASK_ARB bits | |
114 | #define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001 | |
115 | #define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002 | |
116 | #endif // WGL_CONTEXT_MAJOR_VERSION_ARB | |
117 | ||
118 | static LRESULT CALLBACK wndProcDummy (HWND theWin, UINT theMsg, WPARAM theParamW, LPARAM theParamL) | |
119 | { | |
120 | return DefWindowProcW (theWin, theMsg, theParamW, theParamL); | |
121 | } | |
2166f0fa SK |
122 | #else |
123 | static Bool WaitForNotify (Display* theDisp, XEvent* theEv, char* theArg) | |
124 | { | |
125 | return (theEv->type == MapNotify) && (theEv->xmap.window == (Window )theArg); | |
126 | } | |
127 | #endif | |
128 | ||
5640d653 | 129 | } |
2166f0fa SK |
130 | |
131 | // ======================================================================= | |
132 | // function : OpenGl_Window | |
133 | // purpose : | |
134 | // ======================================================================= | |
25b97fac | 135 | OpenGl_Window::OpenGl_Window (const Handle(OpenGl_GraphicDriver)& theDriver, |
2166f0fa | 136 | const CALL_DEF_WINDOW& theCWindow, |
5e27df78 | 137 | Aspect_RenderingContext theGContext, |
58655684 | 138 | const Handle(OpenGl_Caps)& theCaps, |
5e27df78 | 139 | const Handle(OpenGl_Context)& theShareCtx) |
73192b37 | 140 | : myGlContext (new OpenGl_Context (theCaps)), |
2166f0fa | 141 | myOwnGContext (theGContext == 0), |
e3573bb9 | 142 | myWidth (theCWindow.dx), |
143 | myHeight (theCWindow.dy), | |
73192b37 | 144 | myBgColor (THE_DEFAULT_BG_COLOR) |
2166f0fa SK |
145 | { |
146 | myBgColor.rgb[0] = theCWindow.Background.r; | |
147 | myBgColor.rgb[1] = theCWindow.Background.g; | |
148 | myBgColor.rgb[2] = theCWindow.Background.b; | |
149 | ||
25b97fac | 150 | #if defined(HAVE_EGL) || defined(__ANDROID__) |
151 | EGLDisplay anEglDisplay = (EGLDisplay )theDriver->getRawGlDisplay(); | |
152 | EGLContext anEglContext = (EGLContext )theDriver->getRawGlContext(); | |
153 | EGLConfig anEglConfig = (EGLConfig )theDriver->getRawGlConfig(); | |
154 | if (anEglDisplay == EGL_NO_DISPLAY | |
155 | || anEglContext == EGL_NO_CONTEXT | |
156 | || anEglConfig == NULL) | |
157 | { | |
158 | Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL does not provide compatible configurations!"); | |
159 | return; | |
160 | } | |
161 | ||
162 | EGLSurface anEglSurf = EGL_NO_SURFACE; | |
163 | if (theGContext == (EGLContext )EGL_NO_CONTEXT) | |
164 | { | |
165 | // create new surface | |
166 | anEglSurf = eglCreateWindowSurface (anEglDisplay, anEglConfig, (EGLNativeWindowType )theCWindow.XWindow, NULL); | |
167 | if (anEglSurf == EGL_NO_SURFACE) | |
168 | { | |
169 | Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL is unable to create surface for window!"); | |
170 | return; | |
171 | } | |
172 | } | |
173 | else if (theGContext != anEglContext) | |
174 | { | |
175 | Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL is used in unsupported combination!"); | |
176 | return; | |
177 | } | |
178 | else | |
179 | { | |
180 | anEglSurf = eglGetCurrentSurface(EGL_DRAW); | |
181 | if (anEglSurf == EGL_NO_SURFACE) | |
182 | { | |
183 | Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window, EGL is unable to retrieve current surface!"); | |
184 | return; | |
185 | } | |
186 | } | |
187 | ||
188 | myGlContext->Init ((Aspect_Drawable )anEglSurf, (Aspect_Display )anEglDisplay, (Aspect_RenderingContext )anEglContext); | |
189 | #elif defined(_WIN32) | |
190 | (void )theDriver; | |
5e27df78 | 191 | HWND aWindow = (HWND )theCWindow.XWindow; |
192 | HDC aWindowDC = GetDC (aWindow); | |
193 | HGLRC aGContext = (HGLRC )theGContext; | |
194 | ||
3d8969b1 | 195 | PIXELFORMATDESCRIPTOR aPixelFrmt; |
abe46077 | 196 | memset (&aPixelFrmt, 0, sizeof(aPixelFrmt)); |
197 | aPixelFrmt.nSize = sizeof(PIXELFORMATDESCRIPTOR); | |
198 | aPixelFrmt.nVersion = 1; | |
199 | aPixelFrmt.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER; | |
200 | aPixelFrmt.iPixelType = PFD_TYPE_RGBA; | |
201 | aPixelFrmt.cColorBits = 24; | |
202 | aPixelFrmt.cDepthBits = 24; | |
203 | aPixelFrmt.cStencilBits = 8; | |
204 | aPixelFrmt.iLayerType = PFD_MAIN_PLANE; | |
205 | if (theCaps->contextStereo) | |
206 | { | |
207 | aPixelFrmt.dwFlags |= PFD_STEREO; | |
208 | } | |
209 | ||
210 | int aPixelFrmtId = ChoosePixelFormat (aWindowDC, &aPixelFrmt); | |
b5ac8292 | 211 | |
212 | // in case of failure try without stereo if any | |
213 | if (aPixelFrmtId == 0 && theCaps->contextStereo) | |
214 | { | |
215 | TCollection_ExtendedString aMsg ("OpenGl_Window::CreateWindow: " | |
216 | "ChoosePixelFormat is unable to find stereo supported pixel format. " | |
217 | "Choosing similar non stereo format."); | |
218 | myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, | |
219 | GL_DEBUG_TYPE_OTHER_ARB, | |
220 | 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMsg); | |
221 | ||
222 | aPixelFrmt.dwFlags &= ~PFD_STEREO; | |
223 | aPixelFrmtId = ChoosePixelFormat (aWindowDC, &aPixelFrmt); | |
224 | } | |
225 | ||
3d8969b1 | 226 | if (aPixelFrmtId == 0) |
5e27df78 | 227 | { |
228 | ReleaseDC (aWindow, aWindowDC); | |
229 | ||
230 | TCollection_AsciiString aMsg ("OpenGl_Window::CreateWindow: ChoosePixelFormat failed. Error code: "); | |
231 | aMsg += (int )GetLastError(); | |
232 | Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString()); | |
233 | return; | |
234 | } | |
235 | ||
abe46077 | 236 | DescribePixelFormat (aWindowDC, aPixelFrmtId, sizeof(aPixelFrmt), &aPixelFrmt); |
5e27df78 | 237 | |
58655684 | 238 | HGLRC aSlaveCtx = !theShareCtx.IsNull() ? (HGLRC )theShareCtx->myGContext : NULL; |
5e27df78 | 239 | if (aGContext == NULL) |
240 | { | |
58655684 | 241 | // create temporary context to retrieve advanced context creation procedures |
242 | HMODULE aModule = GetModuleHandleW(NULL); | |
243 | WNDCLASSW aClass; memset (&aClass, 0, sizeof(aClass)); | |
244 | aClass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; | |
245 | aClass.lpfnWndProc = wndProcDummy; | |
246 | aClass.hInstance = aModule; | |
247 | aClass.lpszClassName = L"OpenGl_WindowTmp"; | |
248 | HWND aWinTmp = NULL; | |
249 | HDC aDevCtxTmp = NULL; | |
250 | HGLRC aRendCtxTmp = NULL; | |
abe46077 | 251 | if ((!theCaps->contextDebug && !theCaps->contextNoAccel) |
58655684 | 252 | || RegisterClassW (&aClass) == 0) |
253 | { | |
254 | aClass.lpszClassName = NULL; | |
255 | } | |
256 | if (aClass.lpszClassName != NULL) | |
257 | { | |
229c0b6a | 258 | DWORD anExStyle = WS_EX_TOOLWINDOW | WS_EX_WINDOWEDGE; |
259 | #if (_WIN32_WINNT >= 0x0500) | |
260 | anExStyle |= WS_EX_NOACTIVATE; | |
261 | #endif | |
262 | aWinTmp = CreateWindowExW(anExStyle, | |
58655684 | 263 | aClass.lpszClassName, L"OpenGl_WindowTmp", |
264 | WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_DISABLED, | |
265 | 2, 2, 4, 4, | |
266 | NULL, NULL, aModule, NULL); | |
267 | } | |
268 | if (aWinTmp != NULL) | |
269 | { | |
270 | aDevCtxTmp = GetDC (aWinTmp); | |
271 | SetPixelFormat (aDevCtxTmp, aPixelFrmtId, &aPixelFrmt); | |
272 | aRendCtxTmp = wglCreateContext (aDevCtxTmp); | |
273 | } | |
abe46077 | 274 | |
275 | typedef BOOL (WINAPI *wglChoosePixelFormatARB_t)(HDC theDevCtx, | |
276 | const int* theIntAttribs, | |
277 | const float* theFloatAttribs, | |
278 | unsigned int theMaxFormats, | |
279 | int* theFormatsOut, | |
280 | unsigned int* theNumFormatsOut); | |
281 | typedef HGLRC (WINAPI *wglCreateContextAttribsARB_t)(HDC theDevCtx, | |
282 | HGLRC theShareContext, | |
283 | const int* theAttribs); | |
284 | wglChoosePixelFormatARB_t aChoosePixProc = NULL; | |
285 | wglCreateContextAttribsARB_t aCreateCtxProc = NULL; | |
58655684 | 286 | if (aRendCtxTmp != NULL) |
287 | { | |
288 | wglMakeCurrent (aDevCtxTmp, aRendCtxTmp); | |
289 | ||
290 | typedef const char* (WINAPI *wglGetExtensionsStringARB_t)(HDC theDeviceContext); | |
abe46077 | 291 | wglGetExtensionsStringARB_t aGetExtensions = (wglGetExtensionsStringARB_t )wglGetProcAddress ("wglGetExtensionsStringARB"); |
292 | const char* aWglExts = (aGetExtensions != NULL) ? aGetExtensions (wglGetCurrentDC()) : NULL; | |
293 | if (OpenGl_Context::CheckExtension (aWglExts, "WGL_ARB_pixel_format")) | |
294 | { | |
295 | aChoosePixProc = (wglChoosePixelFormatARB_t )wglGetProcAddress ("wglChoosePixelFormatARB"); | |
296 | } | |
297 | if (OpenGl_Context::CheckExtension (aWglExts, "WGL_ARB_create_context_profile")) | |
298 | { | |
299 | aCreateCtxProc = (wglCreateContextAttribsARB_t )wglGetProcAddress ("wglCreateContextAttribsARB"); | |
300 | } | |
301 | } | |
302 | ||
303 | // choose extended pixel format | |
304 | if (aChoosePixProc != NULL) | |
305 | { | |
306 | const int aPixAttribs[] = | |
307 | { | |
308 | WGL_DRAW_TO_WINDOW_ARB, GL_TRUE, | |
309 | WGL_SUPPORT_OPENGL_ARB, GL_TRUE, | |
310 | WGL_DOUBLE_BUFFER_ARB, GL_TRUE, | |
311 | WGL_STEREO_ARB, theCaps->contextStereo ? GL_TRUE : GL_FALSE, | |
312 | WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB, | |
313 | //WGL_SAMPLE_BUFFERS_ARB, 1, | |
314 | //WGL_SAMPLES_ARB, 8, | |
315 | WGL_COLOR_BITS_ARB, 24, | |
316 | WGL_DEPTH_BITS_ARB, 24, | |
317 | WGL_STENCIL_BITS_ARB, 8, | |
318 | WGL_ACCELERATION_ARB, theCaps->contextNoAccel ? WGL_NO_ACCELERATION_ARB : WGL_FULL_ACCELERATION_ARB, | |
319 | 0, 0, | |
320 | }; | |
321 | unsigned int aFrmtsNb = 0; | |
322 | aChoosePixProc (aWindowDC, aPixAttribs, NULL, 1, &aPixelFrmtId, &aFrmtsNb); | |
323 | } | |
324 | ||
325 | // setup pixel format - may be set only once per window | |
326 | if (!SetPixelFormat (aWindowDC, aPixelFrmtId, &aPixelFrmt)) | |
327 | { | |
328 | ReleaseDC (aWindow, aWindowDC); | |
329 | ||
330 | TCollection_AsciiString aMsg("OpenGl_Window::CreateWindow: SetPixelFormat failed. Error code: "); | |
331 | aMsg += (int )GetLastError(); | |
332 | Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString()); | |
333 | return; | |
334 | } | |
335 | ||
336 | // create GL context with extra options | |
337 | if (aCreateCtxProc != NULL) | |
338 | { | |
339 | // Beware! NVIDIA drivers reject context creation when WGL_CONTEXT_PROFILE_MASK_ARB are specified | |
340 | // but not WGL_CONTEXT_MAJOR_VERSION_ARB/WGL_CONTEXT_MINOR_VERSION_ARB. | |
341 | int aCtxAttribs[] = | |
342 | { | |
343 | //WGL_CONTEXT_MAJOR_VERSION_ARB, 3, | |
344 | //WGL_CONTEXT_MINOR_VERSION_ARB, 2, | |
345 | //WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, //WGL_CONTEXT_CORE_PROFILE_BIT_ARB, | |
346 | WGL_CONTEXT_FLAGS_ARB, theCaps->contextDebug ? WGL_CONTEXT_DEBUG_BIT_ARB : 0, | |
347 | 0, 0 | |
348 | }; | |
349 | ||
350 | aGContext = aCreateCtxProc (aWindowDC, aSlaveCtx, aCtxAttribs); | |
351 | if (aGContext != NULL) | |
58655684 | 352 | { |
abe46077 | 353 | aSlaveCtx = NULL; |
58655684 | 354 | } |
355 | } | |
356 | ||
357 | if (aRendCtxTmp != NULL) | |
358 | { | |
359 | wglDeleteContext (aRendCtxTmp); | |
360 | } | |
361 | if (aDevCtxTmp != NULL) | |
362 | { | |
363 | ReleaseDC (aWinTmp, aDevCtxTmp); | |
364 | } | |
365 | if (aWinTmp != NULL) | |
366 | { | |
367 | DestroyWindow (aWinTmp); | |
368 | } | |
369 | if (aClass.lpszClassName != NULL) | |
370 | { | |
371 | UnregisterClassW (aClass.lpszClassName, aModule); | |
372 | } | |
373 | ||
374 | if (aGContext == NULL) | |
375 | { | |
abe46077 | 376 | // create context using obsolete functionality |
58655684 | 377 | aGContext = wglCreateContext (aWindowDC); |
378 | } | |
5e27df78 | 379 | if (aGContext == NULL) |
380 | { | |
381 | ReleaseDC (aWindow, aWindowDC); | |
382 | ||
383 | TCollection_AsciiString aMsg ("OpenGl_Window::CreateWindow: wglCreateContext failed. Error code: "); | |
384 | aMsg += (int )GetLastError(); | |
385 | Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString()); | |
386 | return; | |
387 | } | |
388 | } | |
389 | ||
390 | // all GL context within one OpenGl_GraphicDriver should be shared! | |
58655684 | 391 | if (aSlaveCtx != NULL && wglShareLists (aSlaveCtx, aGContext) != TRUE) |
5e27df78 | 392 | { |
393 | TCollection_AsciiString aMsg ("OpenGl_Window::CreateWindow: wglShareLists failed. Error code: "); | |
394 | aMsg += (int )GetLastError(); | |
395 | Aspect_GraphicDeviceDefinitionError::Raise (aMsg.ToCString()); | |
396 | return; | |
397 | } | |
398 | ||
399 | myGlContext->Init ((Aspect_Handle )aWindow, (Aspect_Handle )aWindowDC, (Aspect_RenderingContext )aGContext); | |
400 | #else | |
eaf5c5e0 | 401 | Window aParent = (Window )theCWindow.XWindow; |
402 | Window aWindow = 0; | |
403 | ||
25b97fac | 404 | Display* aDisp = theDriver->GetDisplayConnection()->GetDisplay(); |
5e27df78 | 405 | GLXContext aGContext = (GLXContext )theGContext; |
2166f0fa | 406 | |
2166f0fa SK |
407 | XWindowAttributes wattr; |
408 | XGetWindowAttributes (aDisp, aParent, &wattr); | |
409 | const int scr = DefaultScreen (aDisp); | |
410 | ||
411 | XVisualInfo* aVis = NULL; | |
412 | { | |
413 | unsigned long aVisInfoMask = VisualIDMask | VisualScreenMask; | |
414 | XVisualInfo aVisInfo; | |
415 | aVisInfo.visualid = wattr.visual->visualid; | |
416 | aVisInfo.screen = scr; | |
417 | int aNbItems; | |
418 | aVis = XGetVisualInfo (aDisp, aVisInfoMask, &aVisInfo, &aNbItems); | |
419 | } | |
420 | ||
2166f0fa SK |
421 | if (!myOwnGContext) |
422 | { | |
423 | if (aVis != NULL) | |
424 | { | |
425 | Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window::CreateWindow: XGetVisualInfo failed."); | |
426 | return; | |
427 | } | |
428 | ||
5e27df78 | 429 | aWindow = aParent; |
2166f0fa SK |
430 | } |
431 | else | |
432 | { | |
cdc56cc8 | 433 | #if defined(__linux) || defined(Linux) || defined(__APPLE__) |
2166f0fa SK |
434 | if (aVis != NULL) |
435 | { | |
436 | // check Visual for OpenGl context's parameters compability | |
b5ac8292 | 437 | int isGl = 0, isDoubleBuffer = 0, isRGBA = 0, isStereo = 0; |
438 | int aDepthSize = 0, aStencilSize = 0; | |
2166f0fa SK |
439 | |
440 | if (glXGetConfig (aDisp, aVis, GLX_USE_GL, &isGl) != 0) | |
441 | isGl = 0; | |
442 | ||
443 | if (glXGetConfig (aDisp, aVis, GLX_RGBA, &isRGBA) != 0) | |
444 | isRGBA = 0; | |
445 | ||
446 | if (glXGetConfig (aDisp, aVis, GLX_DOUBLEBUFFER, &isDoubleBuffer) != 0) | |
447 | isDoubleBuffer = 0; | |
448 | ||
b5ac8292 | 449 | if (glXGetConfig (aDisp, aVis, GLX_STEREO, &isStereo) != 0) |
450 | isStereo = 0; | |
451 | ||
2166f0fa SK |
452 | if (glXGetConfig (aDisp, aVis, GLX_DEPTH_SIZE, &aDepthSize) != 0) |
453 | aDepthSize = 0; | |
454 | ||
3d8969b1 | 455 | if (glXGetConfig (aDisp, aVis, GLX_STENCIL_SIZE, &aStencilSize) != 0) |
456 | aStencilSize = 0; | |
457 | ||
b5ac8292 | 458 | if (!isGl || !aDepthSize || !isRGBA || !aStencilSize || |
73192b37 | 459 | (isDoubleBuffer ? 1 : 0) != 1 || |
b5ac8292 | 460 | (isStereo ? 1 : 0) != (theCaps->contextStereo ? 1 : 0)) |
2166f0fa SK |
461 | { |
462 | XFree (aVis); | |
463 | aVis = NULL; | |
464 | } | |
465 | } | |
466 | #endif | |
467 | ||
468 | if (aVis == NULL) | |
469 | { | |
470 | int anIter = 0; | |
3d8969b1 | 471 | int anAttribs[13]; |
2166f0fa SK |
472 | anAttribs[anIter++] = GLX_RGBA; |
473 | ||
474 | anAttribs[anIter++] = GLX_DEPTH_SIZE; | |
475 | anAttribs[anIter++] = 1; | |
476 | ||
3d8969b1 | 477 | anAttribs[anIter++] = GLX_STENCIL_SIZE; |
478 | anAttribs[anIter++] = 1; | |
479 | ||
2166f0fa SK |
480 | anAttribs[anIter++] = GLX_RED_SIZE; |
481 | anAttribs[anIter++] = (wattr.depth <= 8) ? 0 : 1; | |
482 | ||
483 | anAttribs[anIter++] = GLX_GREEN_SIZE; | |
484 | anAttribs[anIter++] = (wattr.depth <= 8) ? 0 : 1; | |
485 | ||
486 | anAttribs[anIter++] = GLX_BLUE_SIZE; | |
487 | anAttribs[anIter++] = (wattr.depth <= 8) ? 0 : 1; | |
488 | ||
73192b37 | 489 | anAttribs[anIter++] = GLX_DOUBLEBUFFER; |
2166f0fa | 490 | |
b5ac8292 | 491 | // warning: this flag may be set to None, so it need to be last in anAttribs |
492 | Standard_Integer aStereoFlagPos = anIter; | |
493 | if (theCaps->contextStereo) | |
494 | anAttribs[anIter++] = GLX_STEREO; | |
495 | ||
2166f0fa SK |
496 | anAttribs[anIter++] = None; |
497 | ||
498 | aVis = glXChooseVisual (aDisp, scr, anAttribs); | |
b5ac8292 | 499 | |
500 | // in case of failure try without stereo if any | |
501 | if (aVis == NULL && theCaps->contextStereo) | |
502 | { | |
503 | TCollection_ExtendedString aMsg ("OpenGl_Window::CreateWindow: " | |
504 | "glXChooseVisual is unable to find stereo supported pixel format. " | |
505 | "Choosing similar non stereo format."); | |
506 | myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB, | |
507 | GL_DEBUG_TYPE_OTHER_ARB, | |
508 | 0, GL_DEBUG_SEVERITY_HIGH_ARB, aMsg); | |
509 | ||
510 | anAttribs[aStereoFlagPos] = None; | |
511 | aVis = glXChooseVisual (aDisp, scr, anAttribs); | |
512 | } | |
513 | ||
2166f0fa SK |
514 | if (aVis == NULL) |
515 | { | |
516 | Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window::CreateWindow: glXChooseVisual failed."); | |
517 | return; | |
518 | } | |
519 | } | |
520 | ||
5e27df78 | 521 | if (!theShareCtx.IsNull()) |
2166f0fa | 522 | { |
5e27df78 | 523 | // ctx est une copie du previous |
524 | aGContext = glXCreateContext (aDisp, aVis, (GLXContext )theShareCtx->myGContext, GL_TRUE); | |
2166f0fa SK |
525 | } |
526 | else | |
527 | { | |
5e27df78 | 528 | aGContext = glXCreateContext (aDisp, aVis, NULL, GL_TRUE); |
2166f0fa SK |
529 | } |
530 | ||
5e27df78 | 531 | if (!aGContext) |
2166f0fa SK |
532 | { |
533 | Aspect_GraphicDeviceDefinitionError::Raise ("OpenGl_Window::CreateWindow: glXCreateContext failed."); | |
534 | return; | |
535 | } | |
536 | ||
2166f0fa SK |
537 | Colormap cmap = XCreateColormap (aDisp, aParent, aVis->visual, AllocNone); |
538 | ||
539 | XColor color; | |
540 | color.red = (unsigned short) (myBgColor.rgb[0] * 0xFFFF); | |
541 | color.green = (unsigned short) (myBgColor.rgb[1] * 0xFFFF); | |
542 | color.blue = (unsigned short) (myBgColor.rgb[2] * 0xFFFF); | |
543 | color.flags = DoRed | DoGreen | DoBlue; | |
544 | XAllocColor (aDisp, cmap, &color); | |
545 | ||
546 | XSetWindowAttributes cwa; | |
547 | cwa.colormap = cmap; | |
548 | cwa.event_mask = StructureNotifyMask; | |
549 | cwa.border_pixel = color.pixel; | |
550 | cwa.background_pixel = color.pixel; | |
551 | ||
552 | if (aVis->visualid == wattr.visual->visualid) | |
553 | { | |
5e27df78 | 554 | aWindow = aParent; |
2166f0fa SK |
555 | } |
556 | else | |
557 | { | |
558 | unsigned long mask = CWBackPixel | CWColormap | CWBorderPixel | CWEventMask; | |
5e27df78 | 559 | aWindow = XCreateWindow (aDisp, aParent, 0, 0, myWidth, myHeight, 0/*bw*/, aVis->depth, InputOutput, aVis->visual, mask, &cwa); |
2166f0fa SK |
560 | } |
561 | ||
5e27df78 | 562 | XSetWindowBackground (aDisp, aWindow, cwa.background_pixel); |
563 | XClearWindow (aDisp, aWindow); | |
2166f0fa | 564 | |
5e27df78 | 565 | if (aWindow != aParent) |
2166f0fa SK |
566 | { |
567 | XEvent anEvent; | |
5e27df78 | 568 | XMapWindow (aDisp, aWindow); |
569 | XIfEvent (aDisp, &anEvent, WaitForNotify, (char* )aWindow); | |
2166f0fa | 570 | } |
2166f0fa SK |
571 | } |
572 | ||
73192b37 | 573 | myGlContext->Init ((Aspect_Drawable )aWindow, (Aspect_Display )aDisp, (Aspect_RenderingContext )aGContext); |
2166f0fa | 574 | #endif |
5e27df78 | 575 | myGlContext->Share (theShareCtx); |
2166f0fa SK |
576 | |
577 | Init(); | |
2166f0fa SK |
578 | } |
579 | ||
580 | // ======================================================================= | |
581 | // function : ~OpenGl_Window | |
582 | // purpose : | |
583 | // ======================================================================= | |
584 | OpenGl_Window::~OpenGl_Window() | |
585 | { | |
25b97fac | 586 | if (!myOwnGContext |
587 | || myGlContext.IsNull()) | |
fd4a6963 | 588 | { |
589 | myGlContext.Nullify(); | |
590 | return; | |
591 | } | |
592 | ||
593 | // release "GL" context if it is owned by window | |
544da5a4 | 594 | // Mesa implementation can fail to destroy GL context if it set for current thread. |
595 | // It should be safer to unset thread GL context before its destruction. | |
25b97fac | 596 | #if defined(HAVE_EGL) || defined(__ANDROID__) |
597 | if ((EGLSurface )myGlContext->myWindow != EGL_NO_SURFACE) | |
598 | { | |
599 | eglDestroySurface ((EGLDisplay )myGlContext->myDisplay, | |
600 | (EGLSurface )myGlContext->myWindow); | |
601 | } | |
602 | #elif defined(_WIN32) | |
fd4a6963 | 603 | HWND aWindow = (HWND )myGlContext->myWindow; |
604 | HDC aWindowDC = (HDC )myGlContext->myWindowDC; | |
605 | HGLRC aWindowGContext = (HGLRC )myGlContext->myGContext; | |
544da5a4 | 606 | HGLRC aThreadGContext = wglGetCurrentContext(); |
5e27df78 | 607 | myGlContext.Nullify(); |
2166f0fa | 608 | |
544da5a4 | 609 | if (aThreadGContext != NULL) |
2166f0fa | 610 | { |
544da5a4 | 611 | if (aThreadGContext == aWindowGContext) |
2166f0fa | 612 | { |
fd4a6963 | 613 | wglMakeCurrent (NULL, NULL); |
2166f0fa | 614 | } |
fd4a6963 | 615 | |
616 | wglDeleteContext (aWindowGContext); | |
2166f0fa | 617 | } |
fd4a6963 | 618 | ReleaseDC (aWindow, aWindowDC); |
5e27df78 | 619 | #else |
544da5a4 | 620 | Display* aDisplay = (Display* )myGlContext->myDisplay; |
621 | GLXContext aWindowGContext = (GLXContext )myGlContext->myGContext; | |
622 | GLXContext aThreadGContext = glXGetCurrentContext(); | |
5e27df78 | 623 | myGlContext.Nullify(); |
624 | ||
fd4a6963 | 625 | if (aDisplay != NULL) |
2166f0fa | 626 | { |
544da5a4 | 627 | if (aThreadGContext == aWindowGContext) |
628 | { | |
629 | glXMakeCurrent (aDisplay, None, NULL); | |
630 | } | |
631 | ||
5e27df78 | 632 | // FSXXX sync necessary if non-direct rendering |
633 | glXWaitGL(); | |
544da5a4 | 634 | glXDestroyContext (aDisplay, aWindowGContext); |
2166f0fa SK |
635 | } |
636 | #endif | |
637 | } | |
638 | ||
4fe56619 | 639 | #endif // !__APPLE__ |
640 | ||
2166f0fa SK |
641 | // ======================================================================= |
642 | // function : Activate | |
643 | // purpose : | |
644 | // ======================================================================= | |
645 | Standard_Boolean OpenGl_Window::Activate() | |
646 | { | |
86fa64d9 | 647 | return myGlContext->MakeCurrent(); |
2166f0fa SK |
648 | } |
649 | ||
4fe56619 | 650 | #if !defined(__APPLE__) || defined(MACOSX_USE_GLX) |
651 | ||
2166f0fa SK |
652 | // ======================================================================= |
653 | // function : Resize | |
654 | // purpose : call_subr_resize | |
655 | // ======================================================================= | |
656 | void OpenGl_Window::Resize (const CALL_DEF_WINDOW& theCWindow) | |
657 | { | |
25b97fac | 658 | #if !defined(_WIN32) && !defined(HAVE_EGL) && !defined(__ANDROID__) |
73192b37 | 659 | Display* aDisp = (Display* )myGlContext->myDisplay; |
2166f0fa SK |
660 | if (aDisp == NULL) |
661 | return; | |
73192b37 | 662 | #endif |
2166f0fa SK |
663 | |
664 | // If the size is not changed - do nothing | |
665 | if ((myWidth == theCWindow.dx) && (myHeight == theCWindow.dy)) | |
666 | return; | |
667 | ||
e3573bb9 | 668 | myWidth = theCWindow.dx; |
669 | myHeight = theCWindow.dy; | |
2166f0fa | 670 | |
25b97fac | 671 | #if !defined(_WIN32) && !defined(HAVE_EGL) && !defined(__ANDROID__) |
5e27df78 | 672 | XResizeWindow (aDisp, myGlContext->myWindow, (unsigned int )myWidth, (unsigned int )myHeight); |
2166f0fa SK |
673 | XSync (aDisp, False); |
674 | #endif | |
675 | ||
676 | Init(); | |
677 | } | |
678 | ||
4fe56619 | 679 | #endif // !__APPLE__ |
680 | ||
2166f0fa SK |
681 | // ======================================================================= |
682 | // function : ReadDepths | |
683 | // purpose : TelReadDepths | |
684 | // ======================================================================= | |
685 | void OpenGl_Window::ReadDepths (const Standard_Integer theX, const Standard_Integer theY, | |
686 | const Standard_Integer theWidth, const Standard_Integer theHeight, | |
687 | float* theDepths) | |
688 | { | |
689 | if (theDepths == NULL || !Activate()) | |
690 | return; | |
691 | ||
c827ea3a | 692 | OpenGl_Mat4 aProjectMat; |
693 | OpenGl_Utils::Ortho2D<Standard_ShortReal> (aProjectMat, | |
694 | 0.f, static_cast<GLfloat> (myWidth), 0.f, static_cast<GLfloat> (myHeight)); | |
695 | ||
696 | myGlContext->WorldViewState.Push(); | |
697 | myGlContext->ProjectionState.Push(); | |
2166f0fa | 698 | |
c827ea3a | 699 | myGlContext->WorldViewState.SetIdentity(); |
700 | myGlContext->ProjectionState.SetCurrent (aProjectMat); | |
701 | ||
702 | myGlContext->ApplyProjectionMatrix(); | |
703 | myGlContext->ApplyWorldViewMatrix(); | |
704 | ||
705 | #if !defined(GL_ES_VERSION_2_0) | |
2166f0fa SK |
706 | glRasterPos2i (theX, theY); |
707 | DisableFeatures(); | |
708 | glReadPixels (theX, theY, theWidth, theHeight, GL_DEPTH_COMPONENT, GL_FLOAT, theDepths); | |
709 | EnableFeatures(); | |
ca3c13d1 | 710 | #endif |
c827ea3a | 711 | |
712 | myGlContext->WorldViewState.Pop(); | |
713 | myGlContext->ProjectionState.Pop(); | |
714 | ||
715 | myGlContext->ApplyProjectionMatrix(); | |
2166f0fa SK |
716 | } |
717 | ||
718 | // ======================================================================= | |
719 | // function : SetBackgroundColor | |
720 | // purpose : call_subr_set_background | |
721 | // ======================================================================= | |
722 | void OpenGl_Window::SetBackgroundColor (const Standard_ShortReal theR, | |
723 | const Standard_ShortReal theG, | |
724 | const Standard_ShortReal theB) | |
725 | { | |
726 | myBgColor.rgb[0] = theR; | |
727 | myBgColor.rgb[1] = theG; | |
728 | myBgColor.rgb[2] = theB; | |
729 | } | |
730 | ||
4fe56619 | 731 | #if !defined(__APPLE__) || defined(MACOSX_USE_GLX) |
732 | ||
2166f0fa SK |
733 | // ======================================================================= |
734 | // function : Init | |
735 | // purpose : | |
736 | // ======================================================================= | |
737 | void OpenGl_Window::Init() | |
738 | { | |
739 | if (!Activate()) | |
740 | return; | |
741 | ||
25b97fac | 742 | #if defined(HAVE_EGL) || defined(__ANDROID__) |
e3573bb9 | 743 | eglQuerySurface ((EGLDisplay )myGlContext->myDisplay, (EGLSurface )myGlContext->myWindow, EGL_WIDTH, &myWidth); |
744 | eglQuerySurface ((EGLDisplay )myGlContext->myDisplay, (EGLSurface )myGlContext->myWindow, EGL_HEIGHT, &myHeight); | |
25b97fac | 745 | #elif defined(_WIN32) |
2166f0fa | 746 | RECT cr; |
5e27df78 | 747 | GetClientRect ((HWND )myGlContext->myWindow, &cr); |
2166f0fa SK |
748 | myWidth = cr.right - cr.left; |
749 | myHeight = cr.bottom - cr.top; | |
750 | #else | |
751 | Window aRootWin; | |
752 | int aDummy; | |
753 | unsigned int aDummyU; | |
754 | unsigned int aNewWidth = 0; | |
755 | unsigned int aNewHeight = 0; | |
73192b37 | 756 | Display* aDisp = (Display* )myGlContext->myDisplay; |
5e27df78 | 757 | XGetGeometry (aDisp, myGlContext->myWindow, &aRootWin, &aDummy, &aDummy, &aNewWidth, &aNewHeight, &aDummyU, &aDummyU); |
2166f0fa SK |
758 | myWidth = aNewWidth; |
759 | myHeight = aNewHeight; | |
760 | #endif | |
761 | ||
ca3c13d1 | 762 | glDisable (GL_SCISSOR_TEST); |
e3573bb9 | 763 | glViewport (0, 0, myWidth, myHeight); |
ca3c13d1 | 764 | #if !defined(GL_ES_VERSION_2_0) |
2166f0fa | 765 | glMatrixMode (GL_MODELVIEW); |
2166f0fa | 766 | glDrawBuffer (GL_BACK); |
ca3c13d1 | 767 | #endif |
2166f0fa SK |
768 | } |
769 | ||
4fe56619 | 770 | #endif // !__APPLE__ |
771 | ||
2166f0fa SK |
772 | // ======================================================================= |
773 | // function : EnableFeatures | |
774 | // purpose : | |
775 | // ======================================================================= | |
776 | void OpenGl_Window::EnableFeatures() const | |
777 | { | |
73192b37 | 778 | // |
2166f0fa SK |
779 | } |
780 | ||
781 | // ======================================================================= | |
782 | // function : DisableFeatures | |
783 | // purpose : | |
784 | // ======================================================================= | |
785 | void OpenGl_Window::DisableFeatures() const | |
786 | { | |
ca3c13d1 | 787 | #if !defined(GL_ES_VERSION_2_0) |
2166f0fa | 788 | glPixelTransferi (GL_MAP_COLOR, GL_FALSE); |
ca3c13d1 | 789 | #endif |
2166f0fa SK |
790 | |
791 | /* | |
792 | * Disable stuff that's likely to slow down glDrawPixels. | |
793 | * (Omit as much of this as possible, when you know in advance | |
794 | * that the OpenGL state will already be set correctly.) | |
795 | */ | |
2166f0fa SK |
796 | glDisable(GL_BLEND); |
797 | glDisable(GL_DEPTH_TEST); | |
ca3c13d1 | 798 | glDisable(GL_TEXTURE_2D); |
799 | glDisable(GL_STENCIL_TEST); | |
2166f0fa | 800 | |
ca3c13d1 | 801 | #if !defined(GL_ES_VERSION_2_0) |
802 | glDisable(GL_LIGHTING); | |
803 | glDisable(GL_ALPHA_TEST); | |
804 | glDisable(GL_FOG); | |
2166f0fa | 805 | glDisable(GL_LOGIC_OP); |
2166f0fa | 806 | glDisable(GL_TEXTURE_1D); |
ca3c13d1 | 807 | |
2166f0fa SK |
808 | glPixelTransferi(GL_MAP_COLOR, GL_FALSE); |
809 | glPixelTransferi(GL_RED_SCALE, 1); | |
810 | glPixelTransferi(GL_RED_BIAS, 0); | |
811 | glPixelTransferi(GL_GREEN_SCALE, 1); | |
812 | glPixelTransferi(GL_GREEN_BIAS, 0); | |
813 | glPixelTransferi(GL_BLUE_SCALE, 1); | |
814 | glPixelTransferi(GL_BLUE_BIAS, 0); | |
815 | glPixelTransferi(GL_ALPHA_SCALE, 1); | |
816 | glPixelTransferi(GL_ALPHA_BIAS, 0); | |
817 | ||
818 | /* | |
819 | * Disable extensions that could slow down glDrawPixels. | |
820 | * (Actually, you should check for the presence of the proper | |
821 | * extension before making these calls. I've omitted that | |
822 | * code for simplicity.) | |
823 | */ | |
824 | ||
b5ac8292 | 825 | if ((myGlContext->myGlVerMajor >= 1) && (myGlContext->myGlVerMinor >= 2)) |
826 | { | |
2166f0fa | 827 | #ifdef GL_EXT_convolution |
b5ac8292 | 828 | if (myGlContext->CheckExtension ("GL_CONVOLUTION_1D_EXT")) |
829 | glDisable(GL_CONVOLUTION_1D_EXT); | |
830 | ||
831 | if (myGlContext->CheckExtension ("GL_CONVOLUTION_2D_EXT")) | |
832 | glDisable(GL_CONVOLUTION_2D_EXT); | |
833 | ||
834 | if (myGlContext->CheckExtension ("GL_SEPARABLE_2D_EXT")) | |
835 | glDisable(GL_SEPARABLE_2D_EXT); | |
2166f0fa SK |
836 | #endif |
837 | ||
838 | #ifdef GL_EXT_histogram | |
b5ac8292 | 839 | if (myGlContext->CheckExtension ("GL_SEPARABLE_2D_EXT")) |
840 | glDisable(GL_HISTOGRAM_EXT); | |
841 | ||
842 | if (myGlContext->CheckExtension ("GL_MINMAX_EXT")) | |
843 | glDisable(GL_MINMAX_EXT); | |
2166f0fa SK |
844 | #endif |
845 | ||
846 | #ifdef GL_EXT_texture3D | |
b5ac8292 | 847 | if (myGlContext->CheckExtension ("GL_TEXTURE_3D_EXT")) |
848 | glDisable(GL_TEXTURE_3D_EXT); | |
2166f0fa | 849 | #endif |
b5ac8292 | 850 | } |
ca3c13d1 | 851 | #endif |
2166f0fa SK |
852 | } |
853 | ||
854 | // ======================================================================= | |
855 | // function : MakeFrontBufCurrent | |
856 | // purpose : TelMakeFrontBufCurrent | |
857 | // ======================================================================= | |
858 | void OpenGl_Window::MakeFrontBufCurrent() const | |
859 | { | |
ca3c13d1 | 860 | #if !defined(GL_ES_VERSION_2_0) |
2166f0fa | 861 | glDrawBuffer (GL_FRONT); |
ca3c13d1 | 862 | #endif |
2166f0fa SK |
863 | } |
864 | ||
865 | // ======================================================================= | |
866 | // function : MakeBackBufCurrent | |
867 | // purpose : TelMakeBackBufCurrent | |
868 | // ======================================================================= | |
869 | void OpenGl_Window::MakeBackBufCurrent() const | |
870 | { | |
ca3c13d1 | 871 | #if !defined(GL_ES_VERSION_2_0) |
2166f0fa | 872 | glDrawBuffer (GL_BACK); |
ca3c13d1 | 873 | #endif |
2166f0fa | 874 | } |