Commit | Line | Data |
---|---|---|
6aca4d39 | 1 | // Created on: 2012-01-26 |
b311480e | 2 | // Created by: Kirill GAVRILOV |
6aca4d39 | 3 | // Copyright (c) 2012-2014 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 | |
2166f0fa SK |
16 | #ifndef _OpenGl_Context_H__ |
17 | #define _OpenGl_Context_H__ | |
18 | ||
2bd4c032 | 19 | #include <Aspect_Handle.hxx> |
6d0e6be5 | 20 | #include <Aspect_HatchStyle.hxx> |
2bd4c032 | 21 | #include <Aspect_Drawable.hxx> |
22 | #include <Aspect_Display.hxx> | |
23 | #include <Aspect_RenderingContext.hxx> | |
ac116c22 | 24 | #include <Aspect_TypeOfLine.hxx> |
5e27df78 | 25 | #include <NCollection_DataMap.hxx> |
26d9c835 | 26 | #include <Graphic3d_DiagnosticInfo.hxx> |
cc8cbabe | 27 | #include <Graphic3d_TextureUnit.hxx> |
4269bd1b | 28 | #include <NCollection_Map.hxx> |
5e27df78 | 29 | #include <NCollection_Handle.hxx> |
3125ebb6 | 30 | #include <NCollection_List.hxx> |
a1073ae2 | 31 | #include <NCollection_SparseArray.hxx> |
cbf18624 | 32 | #include <Message.hxx> |
58655684 | 33 | #include <OpenGl_Caps.hxx> |
6d0e6be5 | 34 | #include <OpenGl_LineAttributes.hxx> |
8613985b | 35 | #include <OpenGl_Material.hxx> |
825aa485 | 36 | #include <OpenGl_MatrixState.hxx> |
8625ef7e | 37 | #include <OpenGl_Vec.hxx> |
5e27df78 | 38 | #include <OpenGl_Resource.hxx> |
cc8cbabe | 39 | #include <OpenGl_TextureSet.hxx> |
2166f0fa | 40 | #include <Standard_Transient.hxx> |
26d9c835 | 41 | #include <TColStd_IndexedDataMapOfStringString.hxx> |
c87535af | 42 | #include <TColStd_PackedMapOfInteger.hxx> |
30f0ad28 | 43 | #include <OpenGl_Clipping.hxx> |
b5ac8292 | 44 | #include <OpenGl_GlCore11.hxx> |
c04c30b3 | 45 | |
46 | #include <NCollection_Shared.hxx> | |
2166f0fa | 47 | |
5f8b738e | 48 | //! Forward declarations |
a2e4f780 | 49 | #if defined(__APPLE__) |
50 | #import <TargetConditionals.h> | |
51 | #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE | |
52 | #ifdef __OBJC__ | |
53 | @class EAGLContext; | |
54 | #else | |
55 | struct EAGLContext; | |
56 | #endif | |
57 | #else | |
58 | #ifdef __OBJC__ | |
59 | @class NSOpenGLContext; | |
60 | #else | |
61 | struct NSOpenGLContext; | |
62 | #endif | |
63 | #endif | |
64 | #endif | |
65 | ||
01ca42b2 | 66 | struct OpenGl_GlFunctions; |
5e27df78 | 67 | struct OpenGl_ArbTBO; |
68 | struct OpenGl_ArbIns; | |
58655684 | 69 | struct OpenGl_ArbDbg; |
01ca42b2 | 70 | struct OpenGl_ArbFBO; |
b86bb3df | 71 | struct OpenGl_ArbFBOBlit; |
cc8cbabe | 72 | struct OpenGl_ArbSamplerObject; |
25ef750e | 73 | struct OpenGl_ArbTexBindless; |
cc8cbabe | 74 | struct OpenGl_ExtGS; |
2166f0fa | 75 | |
01ca42b2 | 76 | template<typename theBaseClass_t> struct OpenGl_TmplCore12; |
77 | typedef OpenGl_TmplCore12<OpenGl_GlCore11> OpenGl_GlCore12; | |
78 | typedef OpenGl_TmplCore12<OpenGl_GlCore11Fwd> OpenGl_GlCore12Fwd; | |
79 | ||
80 | struct OpenGl_GlCore13; | |
81 | struct OpenGl_GlCore13Fwd; | |
82 | ||
83 | template<typename theBaseClass_t> struct OpenGl_TmplCore14; | |
84 | typedef OpenGl_TmplCore14<OpenGl_GlCore13> OpenGl_GlCore14; | |
85 | typedef OpenGl_TmplCore14<OpenGl_GlCore13Fwd> OpenGl_GlCore14Fwd; | |
86 | ||
87 | template<typename theBaseClass_t> struct OpenGl_TmplCore15; | |
88 | typedef OpenGl_TmplCore15<OpenGl_GlCore14> OpenGl_GlCore15; | |
89 | typedef OpenGl_TmplCore15<OpenGl_GlCore14Fwd> OpenGl_GlCore15Fwd; | |
90 | ||
91 | template<typename theBaseClass_t> struct OpenGl_TmplCore20; | |
92 | typedef OpenGl_TmplCore20<OpenGl_GlCore15> OpenGl_GlCore20; | |
93 | typedef OpenGl_TmplCore20<OpenGl_GlCore15Fwd> OpenGl_GlCore20Fwd; | |
94 | ||
95 | template<typename theBaseClass_t> struct OpenGl_TmplCore21; | |
96 | typedef OpenGl_TmplCore21<OpenGl_GlCore20> OpenGl_GlCore21; | |
97 | typedef OpenGl_TmplCore21<OpenGl_GlCore20Fwd> OpenGl_GlCore21Fwd; | |
98 | ||
99 | template<typename theBaseClass_t> struct OpenGl_TmplCore30; | |
100 | typedef OpenGl_TmplCore30<OpenGl_GlCore21> OpenGl_GlCore30; | |
101 | typedef OpenGl_TmplCore30<OpenGl_GlCore21Fwd> OpenGl_GlCore30Fwd; | |
102 | ||
103 | template<typename theBaseClass_t> struct OpenGl_TmplCore31; | |
104 | typedef OpenGl_TmplCore31<OpenGl_GlCore30> OpenGl_GlCore31Back; | |
105 | typedef OpenGl_TmplCore31<OpenGl_GlCore30Fwd> OpenGl_GlCore31; | |
106 | ||
107 | template<typename theBaseClass_t> struct OpenGl_TmplCore32; | |
108 | typedef OpenGl_TmplCore32<OpenGl_GlCore31Back> OpenGl_GlCore32Back; | |
109 | typedef OpenGl_TmplCore32<OpenGl_GlCore31> OpenGl_GlCore32; | |
110 | ||
111 | template<typename theBaseClass_t> struct OpenGl_TmplCore33; | |
112 | typedef OpenGl_TmplCore33<OpenGl_GlCore32Back> OpenGl_GlCore33Back; | |
113 | typedef OpenGl_TmplCore33<OpenGl_GlCore32> OpenGl_GlCore33; | |
114 | ||
115 | template<typename theBaseClass_t> struct OpenGl_TmplCore40; | |
116 | typedef OpenGl_TmplCore40<OpenGl_GlCore33Back> OpenGl_GlCore40Back; | |
117 | typedef OpenGl_TmplCore40<OpenGl_GlCore33> OpenGl_GlCore40; | |
118 | ||
119 | template<typename theBaseClass_t> struct OpenGl_TmplCore41; | |
120 | typedef OpenGl_TmplCore41<OpenGl_GlCore40Back> OpenGl_GlCore41Back; | |
121 | typedef OpenGl_TmplCore41<OpenGl_GlCore40> OpenGl_GlCore41; | |
122 | ||
123 | template<typename theBaseClass_t> struct OpenGl_TmplCore42; | |
124 | typedef OpenGl_TmplCore42<OpenGl_GlCore41Back> OpenGl_GlCore42Back; | |
125 | typedef OpenGl_TmplCore42<OpenGl_GlCore41> OpenGl_GlCore42; | |
126 | ||
127 | template<typename theBaseClass_t> struct OpenGl_TmplCore43; | |
128 | typedef OpenGl_TmplCore43<OpenGl_GlCore42Back> OpenGl_GlCore43Back; | |
129 | typedef OpenGl_TmplCore43<OpenGl_GlCore42> OpenGl_GlCore43; | |
130 | ||
131 | template<typename theBaseClass_t> struct OpenGl_TmplCore44; | |
132 | typedef OpenGl_TmplCore44<OpenGl_GlCore43Back> OpenGl_GlCore44Back; | |
133 | typedef OpenGl_TmplCore44<OpenGl_GlCore43> OpenGl_GlCore44; | |
134 | ||
9491df8c | 135 | template<typename theBaseClass_t> struct OpenGl_TmplCore45; |
136 | typedef OpenGl_TmplCore45<OpenGl_GlCore44Back> OpenGl_GlCore45Back; | |
137 | typedef OpenGl_TmplCore45<OpenGl_GlCore44> OpenGl_GlCore45; | |
138 | ||
f838dac4 | 139 | class Graphic3d_PresentationAttributes; |
bf5f0ca2 | 140 | class OpenGl_Aspects; |
cc8cbabe | 141 | class OpenGl_FrameBuffer; |
142 | class OpenGl_Sampler; | |
143 | class OpenGl_ShaderProgram; | |
144 | class OpenGl_ShaderManager; | |
15669413 | 145 | class OpenGl_FrameStats; |
c04c30b3 | 146 | |
a1073ae2 | 147 | enum OpenGl_FeatureFlag |
148 | { | |
149 | OpenGl_FeatureNotAvailable = 0, //!< Feature is not supported by OpenGl implementation. | |
150 | OpenGl_FeatureInExtensions = 1, //!< Feature is supported as extension. | |
151 | OpenGl_FeatureInCore = 2 //!< Feature is supported as part of core profile. | |
152 | }; | |
153 | ||
c04c30b3 | 154 | DEFINE_STANDARD_HANDLE(OpenGl_Context, Standard_Transient) |
155 | ||
5f8b738e | 156 | //! This class generalize access to the GL context and available extensions. |
157 | //! | |
4e1523ef | 158 | //! Functions related to specific OpenGL version or extension are grouped into structures which can be accessed as fields of this class. |
159 | //! The most simple way to check that required functionality is available - is NULL check for the group: | |
5f8b738e | 160 | //! @code |
161 | //! if (myContext->core20 != NULL) | |
162 | //! { | |
163 | //! myGlProgram = myContext->core20->glCreateProgram(); | |
164 | //! .. do more stuff .. | |
165 | //! } | |
166 | //! else | |
167 | //! { | |
168 | //! .. compatibility with outdated configurations .. | |
169 | //! } | |
170 | //! @endcode | |
171 | //! | |
4e1523ef | 172 | //! Current implementation provide access to OpenGL core functionality up to 4.4 version (core12, core13, core14, core15, fields core20) |
173 | //! as well as several extensions (arbTBO, arbFBO, etc.). | |
174 | //! | |
175 | //! OpenGL context might be initialized in Core Profile. In this case deprecated functionality become unavailable. | |
176 | //! To make code easily adaptable to wide range of OpenGL versions, function sets related to each version has two kinds of suffixes: | |
177 | //! - "back" for version 3.2+. | |
178 | //! Represents function set for Backward-Compatible Profile. | |
179 | //! Function sets without this suffix represents core profile. | |
180 | //! - "fwd" for version 3.0-. | |
181 | //! Represents non-deprecated function set of earlier OpenGL versions, which are still available within OpenGL 3.2 Core Profile. | |
182 | //! Function sets without this suffix represents complete list of functions related to specific OpenGL version. | |
183 | //! | |
184 | //! To select which core** function set should be used in specific case: | |
185 | //! - Determine the minimal OpenGL version required for implemented functionality and use it to access all functions. | |
186 | //! For example, if algorithm requires OpenGL 2.1+, it is better to write core20fwd->glEnable() rather than core11fwd->glEnable() for uniformity. | |
187 | //! - If functionality will work within Core Profile, use function sets with appropriate suffix. | |
188 | //! - Validate minimal requirements at initialization/creation time and omit checks within code where algorithm should be already initialized. | |
189 | //! Properly escape code incompatible with Core Profile. The simplest way to check Core Profile is "if (core11 == NULL)". | |
5f8b738e | 190 | //! |
191 | //! Simplified extensions classification: | |
192 | //! - prefixed with NV, AMD, ATI are vendor-specific (however may be provided by other vendors in some cases); | |
193 | //! - prefixed with EXT are accepted by 2+ vendors; | |
194 | //! - prefixed with ARB are accepted by Architecture Review Board and are candidates | |
195 | //! for inclusion into GL core functionality. | |
196 | //! Some functionality can be represented in several extensions simultaneously. | |
197 | //! In this case developer should be careful because different specification may differ | |
198 | //! in aspects (like enumeration values and error-handling). | |
199 | //! | |
4e1523ef | 200 | //! Notice that some systems provide mechanisms to simultaneously incorporate with GL contexts with different capabilities. |
201 | //! For this reason OpenGl_Context should be initialized and used for each GL context independently. | |
bc73b006 | 202 | //! |
203 | //! Matrices of OpenGl transformations: | |
204 | //! model -> world -> view -> projection | |
205 | //! These matrices might be changed for local transformation, transform persistent using direct access to | |
206 | //! current matrix of ModelWorldState, WorldViewState and ProjectionState | |
207 | //! After, these matrices should be applyed using ApplyModelWorldMatrix, ApplyWorldViewMatrix, | |
208 | //! ApplyModelViewMatrix or ApplyProjectionMatrix. | |
2166f0fa SK |
209 | class OpenGl_Context : public Standard_Transient |
210 | { | |
8613985b | 211 | DEFINE_STANDARD_RTTIEXT(OpenGl_Context, Standard_Transient) |
212 | friend class OpenGl_Window; | |
a174a3c5 | 213 | public: |
214 | ||
15669413 | 215 | typedef NCollection_Shared< NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)> > OpenGl_ResourcesMap; |
216 | ||
a174a3c5 | 217 | //! Function for getting power of to number larger or equal to input number. |
218 | //! @param theNumber number to 'power of two' | |
219 | //! @param theThreshold upper threshold | |
220 | //! @return power of two number | |
221 | inline static Standard_Integer GetPowerOfTwo (const Standard_Integer theNumber, | |
222 | const Standard_Integer theThreshold) | |
223 | { | |
224 | for (Standard_Integer p2 = 2; p2 <= theThreshold; p2 <<= 1) | |
225 | { | |
226 | if (theNumber <= p2) | |
227 | { | |
228 | return p2; | |
229 | } | |
230 | } | |
231 | return theThreshold; | |
232 | } | |
233 | ||
2166f0fa SK |
234 | public: |
235 | ||
5f8b738e | 236 | //! Empty constructor. You should call Init() to perform initialization with bound GL context. |
58655684 | 237 | Standard_EXPORT OpenGl_Context (const Handle(OpenGl_Caps)& theCaps = NULL); |
5f8b738e | 238 | |
239 | //! Destructor. | |
240 | Standard_EXPORT virtual ~OpenGl_Context(); | |
2166f0fa | 241 | |
05e2200b | 242 | //! Release all resources, including shared ones |
243 | Standard_EXPORT void forcedRelease(); | |
244 | ||
5e27df78 | 245 | //! Share GL context resources. |
246 | //! theShareCtx - handle to context to retrieve handles to shared resources. | |
247 | Standard_EXPORT void Share (const Handle(OpenGl_Context)& theShareCtx); | |
248 | ||
7e7c2f0b | 249 | //! Initialize class from currently bound OpenGL context. Method should be called only once. |
250 | //! @return false if no GL context is bound to the current thread | |
4e1523ef | 251 | Standard_EXPORT Standard_Boolean Init (const Standard_Boolean theIsCoreProfile = Standard_False); |
2166f0fa | 252 | |
fd4a6963 | 253 | //! @return true if this context is valid (has been initialized) |
254 | inline Standard_Boolean IsValid() const | |
255 | { | |
256 | return myIsInitialized; | |
257 | } | |
258 | ||
da8bb41d | 259 | #if defined(HAVE_EGL) |
260 | //! Initialize class from specified surface and rendering context. Method should be called only once. | |
261 | //! @return false if OpenGL context can not be bound to specified surface | |
262 | Standard_EXPORT Standard_Boolean Init (const Aspect_Drawable theEglSurface, | |
263 | const Aspect_Display theEglDisplay, | |
4e1523ef | 264 | const Aspect_RenderingContext theEglContext, |
265 | const Standard_Boolean theIsCoreProfile = Standard_False); | |
da8bb41d | 266 | #elif defined(_WIN32) |
7e7c2f0b | 267 | //! Initialize class from specified window and rendering context. Method should be called only once. |
268 | //! @return false if OpenGL context can not be bound to specified window | |
f0430952 | 269 | Standard_EXPORT Standard_Boolean Init (const Aspect_Handle theWindow, |
270 | const Aspect_Handle theWindowDC, | |
4e1523ef | 271 | const Aspect_RenderingContext theGContext, |
272 | const Standard_Boolean theIsCoreProfile = Standard_False); | |
7e7c2f0b | 273 | |
274 | //! @return the window handle (HWND) currently bound to this OpenGL context | |
275 | inline Aspect_Handle Window() const | |
276 | { | |
277 | return myWindow; | |
278 | } | |
279 | ||
4fe56619 | 280 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
a2e4f780 | 281 | #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE |
282 | ||
283 | //! Initialize class from specified OpenGL ES context (EAGLContext). Method should be called only once. | |
284 | Standard_EXPORT Standard_Boolean Init (EAGLContext* theGContext, | |
285 | const Standard_Boolean theIsCoreProfile = Standard_False); | |
286 | #else | |
287 | ||
7e7c2f0b | 288 | //! Initialize class from specified OpenGL context (NSOpenGLContext). Method should be called only once. |
a2e4f780 | 289 | Standard_EXPORT Standard_Boolean Init (NSOpenGLContext* theGContext, |
4e1523ef | 290 | const Standard_Boolean theIsCoreProfile = Standard_False); |
a2e4f780 | 291 | #endif |
2bd4c032 | 292 | #else |
a2e4f780 | 293 | |
7e7c2f0b | 294 | //! Initialize class from specified window and rendering context. Method should be called only once. |
295 | //! @return false if OpenGL context can not be bound to specified window | |
f0430952 | 296 | Standard_EXPORT Standard_Boolean Init (const Aspect_Drawable theWindow, |
297 | const Aspect_Display theDisplay, | |
4e1523ef | 298 | const Aspect_RenderingContext theGContext, |
299 | const Standard_Boolean theIsCoreProfile = Standard_False); | |
7e7c2f0b | 300 | |
301 | //! @return the window handle (GLXDrawable) currently bound to this OpenGL context | |
302 | inline Aspect_Drawable Window() const | |
303 | { | |
304 | return myWindow; | |
305 | } | |
2bd4c032 | 306 | #endif |
307 | ||
4e1523ef | 308 | //! Read OpenGL version information from active context. |
309 | Standard_EXPORT static void ReadGlVersion (Standard_Integer& theGlVerMajor, | |
310 | Standard_Integer& theGlVerMinor); | |
311 | ||
5f8b738e | 312 | //! Check if theExtName extension is supported by active GL context. |
2bd4c032 | 313 | Standard_EXPORT Standard_Boolean CheckExtension (const char* theExtName) const; |
2166f0fa | 314 | |
58655684 | 315 | //! Check if theExtName extension is in extensions string. |
316 | Standard_EXPORT static Standard_Boolean CheckExtension (const char* theExtString, | |
317 | const char* theExtName); | |
318 | ||
2166f0fa | 319 | //! Auxiliary template to retrieve GL function pointer. |
5f8b738e | 320 | //! Pointer to function retrieved from library is statically casted |
321 | //! to requested type - there no way to check real signature of exported function. | |
2166f0fa | 322 | //! The context should be bound before call. |
0ae9ac21 | 323 | //! @param theLastFailFuncName [out] set to theFuncName in case of failure, unmodified on success |
324 | //! @param theFuncName [in] function name to find | |
325 | //! @param theFuncPtr [out] retrieved function pointer | |
326 | //! @return TRUE on success | |
327 | template <typename FuncType_t> | |
328 | Standard_Boolean FindProcVerbose (const char*& theLastFailFuncName, | |
329 | const char* theFuncName, | |
330 | FuncType_t& theFuncPtr) | |
331 | { | |
332 | theFuncPtr = (FuncType_t )findProc (theFuncName); | |
333 | if (theFuncPtr == NULL) | |
334 | { | |
335 | theLastFailFuncName = theFuncName; | |
336 | return Standard_False; | |
337 | } | |
338 | return Standard_True; | |
339 | } | |
340 | ||
341 | //! Auxiliary template to retrieve GL function pointer. | |
342 | //! Same as FindProcVerbose() but without auxiliary last function name argument. | |
2166f0fa | 343 | template <typename FuncType_t> |
5f8b738e | 344 | Standard_Boolean FindProc (const char* theFuncName, |
345 | FuncType_t& theFuncPtr) | |
2166f0fa | 346 | { |
5f8b738e | 347 | theFuncPtr = (FuncType_t )findProc (theFuncName); |
2166f0fa SK |
348 | return (theFuncPtr != NULL); |
349 | } | |
350 | ||
2bd4c032 | 351 | //! @return true if detected GL version is greater or equal to requested one. |
352 | inline Standard_Boolean IsGlGreaterEqual (const Standard_Integer theVerMajor, | |
7e7c2f0b | 353 | const Standard_Integer theVerMinor) const |
5f8b738e | 354 | { |
355 | return (myGlVerMajor > theVerMajor) | |
356 | || (myGlVerMajor == theVerMajor && myGlVerMinor >= theVerMinor); | |
357 | } | |
358 | ||
26d9c835 | 359 | //! Return cached GL version major number. |
360 | Standard_Integer VersionMajor() const { return myGlVerMajor; } | |
361 | ||
362 | //! Return cached GL version minor number. | |
363 | Standard_Integer VersionMinor() const { return myGlVerMinor; } | |
364 | ||
f978241f | 365 | //! Access entire map of loaded OpenGL functions. |
366 | const OpenGl_GlFunctions* Functions() const { return myFuncs.operator->(); } | |
367 | ||
5f8b738e | 368 | //! Clean up errors stack for this GL context (glGetError() in loop). |
f9f740d6 | 369 | //! @return true if some error has been cleared |
370 | Standard_EXPORT bool ResetErrors (const bool theToPrintErrors = false); | |
5f8b738e | 371 | |
86fa64d9 | 372 | //! This method uses system-dependent API to retrieve information |
373 | //! about GL context bound to the current thread. | |
374 | //! @return true if current thread is bound to this GL context | |
375 | Standard_EXPORT Standard_Boolean IsCurrent() const; | |
376 | ||
2bd4c032 | 377 | //! Activates current context. |
378 | //! Class should be initialized with appropriate info. | |
379 | Standard_EXPORT Standard_Boolean MakeCurrent(); | |
380 | ||
5e27df78 | 381 | //! Swap front/back buffers for this GL context (should be activated before!). |
382 | Standard_EXPORT void SwapBuffers(); | |
383 | ||
f978241f | 384 | //! Setup swap interval (VSync). |
385 | Standard_EXPORT Standard_Boolean SetSwapInterval (const Standard_Integer theInterval); | |
386 | ||
b5ac8292 | 387 | //! Return true if active mode is GL_RENDER (cached state) |
388 | Standard_Boolean IsRender() const | |
389 | { | |
ca3c13d1 | 390 | #if !defined(GL_ES_VERSION_2_0) |
b5ac8292 | 391 | return myRenderMode == GL_RENDER; |
ca3c13d1 | 392 | #else |
393 | return Standard_True; | |
394 | #endif | |
b5ac8292 | 395 | } |
664cae74 | 396 | |
b5ac8292 | 397 | //! Return true if active mode is GL_FEEDBACK (cached state) |
398 | Standard_Boolean IsFeedback() const | |
399 | { | |
ca3c13d1 | 400 | #if !defined(GL_ES_VERSION_2_0) |
b5ac8292 | 401 | return myRenderMode == GL_FEEDBACK; |
ca3c13d1 | 402 | #else |
403 | return Standard_False; | |
404 | #endif | |
b5ac8292 | 405 | } |
664cae74 | 406 | |
f0430952 | 407 | //! This function retrieves information from GL about free GPU memory that is: |
408 | //! - OS-dependent. On some OS it is per-process and on others - for entire system. | |
409 | //! - Vendor-dependent. Currently available only on NVIDIA and AMD/ATi drivers only. | |
410 | //! - Numbers meaning may vary. | |
411 | //! You should use this info only for diagnostics purposes. | |
412 | //! @return free GPU dedicated memory in bytes. | |
413 | Standard_EXPORT Standard_Size AvailableMemory() const; | |
414 | ||
415 | //! This function retrieves information from GL about GPU memory | |
416 | //! and contains more vendor-specific values than AvailableMemory(). | |
417 | Standard_EXPORT TCollection_AsciiString MemoryInfo() const; | |
418 | ||
26d9c835 | 419 | //! This function retrieves information from GL about GPU memory. |
420 | Standard_EXPORT void MemoryInfo (TColStd_IndexedDataMapOfStringString& theDict) const; | |
421 | ||
422 | //! Fill in the dictionary with OpenGL info. | |
423 | //! Should be called with bound context. | |
424 | Standard_EXPORT void DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict, | |
425 | Graphic3d_DiagnosticInfo theFlags) const; | |
426 | ||
5e27df78 | 427 | //! Access shared resource by its name. |
428 | //! @param theKey - unique identifier; | |
429 | //! @return handle to shared resource or NULL. | |
430 | Standard_EXPORT const Handle(OpenGl_Resource)& GetResource (const TCollection_AsciiString& theKey) const; | |
431 | ||
432 | //! Access shared resource by its name. | |
433 | //! @param theKey - unique identifier; | |
434 | //! @param theValue - handle to fill; | |
435 | //! @return true if resource was shared. | |
436 | template<typename TheHandleType> | |
437 | Standard_Boolean GetResource (const TCollection_AsciiString& theKey, | |
438 | TheHandleType& theValue) const | |
439 | { | |
440 | const Handle(OpenGl_Resource)& aResource = GetResource (theKey); | |
441 | if (aResource.IsNull()) | |
442 | { | |
443 | return Standard_False; | |
444 | } | |
445 | ||
446 | theValue = TheHandleType::DownCast (aResource); | |
447 | return !theValue.IsNull(); | |
448 | } | |
449 | ||
450 | //! Register shared resource. | |
451 | //! Notice that after registration caller shouldn't release it by himself - | |
452 | //! it will be automatically released on context destruction. | |
453 | //! @param theKey - unique identifier, shouldn't be empty; | |
454 | //! @param theResource - new resource to register, shouldn't be NULL. | |
455 | Standard_EXPORT Standard_Boolean ShareResource (const TCollection_AsciiString& theKey, | |
456 | const Handle(OpenGl_Resource)& theResource); | |
457 | ||
458 | //! Release shared resource. | |
459 | //! If there are more than one reference to this resource | |
460 | //! (also used by some other existing object) then call will be ignored. | |
461 | //! This means that current object itself should nullify handle before this call. | |
462 | //! Notice that this is unrecommended operation at all and should be used | |
463 | //! only in case of fat resources to release memory for other needs. | |
a174a3c5 | 464 | //! @param theKey unique identifier |
465 | //! @param theToDelay postpone release until next redraw call | |
466 | Standard_EXPORT void ReleaseResource (const TCollection_AsciiString& theKey, | |
467 | const Standard_Boolean theToDelay = Standard_False); | |
5e27df78 | 468 | |
469 | //! Append resource to queue for delayed clean up. | |
470 | //! Resources in this queue will be released at next redraw call. | |
aa00364d | 471 | template <class T> |
472 | void DelayedRelease (Handle(T)& theResource) | |
473 | { | |
474 | myUnusedResources->Prepend (theResource); | |
475 | theResource.Nullify(); | |
476 | } | |
5e27df78 | 477 | |
478 | //! Clean up the delayed release queue. | |
479 | Standard_EXPORT void ReleaseDelayed(); | |
480 | ||
15669413 | 481 | //! Return map of shared resources. |
482 | const OpenGl_ResourcesMap& SharedResources() const { return *mySharedResources; } | |
483 | ||
4269bd1b | 484 | //! @return tool for management of clippings within this context. |
30f0ad28 | 485 | inline OpenGl_Clipping& ChangeClipping() { return myClippingState; } |
4269bd1b | 486 | |
487 | //! @return tool for management of clippings within this context. | |
30f0ad28 | 488 | inline const OpenGl_Clipping& Clipping() const { return myClippingState; } |
489 | ||
490 | //! @return tool for management of shader programs within this context. | |
491 | inline const Handle(OpenGl_ShaderManager)& ShaderManager() const { return myShaderManager; } | |
4269bd1b | 492 | |
493 | public: | |
494 | ||
ca3c13d1 | 495 | //! Either GL_CLAMP_TO_EDGE (1.2+) or GL_CLAMP (1.1). |
496 | Standard_Integer TextureWrapClamp() const { return myTexClamp; } | |
497 | ||
cd43c08f | 498 | //! @return true if texture parameters GL_TEXTURE_BASE_LEVEL/GL_TEXTURE_MAX_LEVEL are supported. |
499 | Standard_Boolean HasTextureBaseLevel() const | |
500 | { | |
501 | #if !defined(GL_ES_VERSION_2_0) | |
502 | return IsGlGreaterEqual (1, 2); | |
503 | #else | |
504 | return IsGlGreaterEqual (3, 0); | |
505 | #endif | |
506 | } | |
507 | ||
bf75be98 | 508 | //! @return maximum degree of anisotropy texture filter |
3c4b62a4 | 509 | Standard_Integer MaxDegreeOfAnisotropy() const { return myAnisoMax; } |
bf75be98 | 510 | |
511 | //! @return value for GL_MAX_TEXTURE_SIZE | |
3c4b62a4 | 512 | Standard_Integer MaxTextureSize() const { return myMaxTexDim; } |
513 | ||
cc8cbabe | 514 | //! @return value for GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS |
515 | Standard_Integer MaxCombinedTextureUnits() const { return myMaxTexCombined; } | |
516 | ||
5c225e8e | 517 | //! This method returns the multi-texture limit for obsolete fixed-function pipeline. |
518 | //! Use MaxCombinedTextureUnits() instead for limits for using programmable pipeline. | |
519 | //! @return value for GL_MAX_TEXTURE_UNITS | |
520 | Standard_Integer MaxTextureUnitsFFP() const { return myMaxTexUnitsFFP; } | |
521 | ||
72f6dc61 | 522 | //! Return texture unit to be used for sprites (Graphic3d_TextureUnit_PointSprite by default). |
737e9a8d | 523 | Graphic3d_TextureUnit SpriteTextureUnit() const { return mySpriteTexUnit; } |
524 | ||
3c4b62a4 | 525 | //! @return value for GL_MAX_SAMPLES |
526 | Standard_Integer MaxMsaaSamples() const { return myMaxMsaaSamples; } | |
bf75be98 | 527 | |
6997ff1c | 528 | //! @return maximum FBO width for image dump |
529 | Standard_Integer MaxDumpSizeX() const { return myMaxDumpSizeX; } | |
530 | ||
531 | //! @return maximum FBO height for image dump | |
532 | Standard_Integer MaxDumpSizeY() const { return myMaxDumpSizeY; } | |
533 | ||
a1073ae2 | 534 | //! @return value for GL_MAX_DRAW_BUFFERS |
535 | Standard_Integer MaxDrawBuffers() const { return myMaxDrawBuffers; } | |
536 | ||
537 | //! @return value for GL_MAX_COLOR_ATTACHMENTS | |
538 | Standard_Integer MaxColorAttachments() const { return myMaxColorAttachments; } | |
539 | ||
4269bd1b | 540 | //! Get maximum number of clip planes supported by OpenGl. |
7e7c2f0b | 541 | //! This value is implementation dependent. At least 6 |
4269bd1b | 542 | //! planes should be supported by OpenGl (see specs). |
543 | //! @return value for GL_MAX_CLIP_PLANES | |
3c4b62a4 | 544 | Standard_Integer MaxClipPlanes() const { return myMaxClipPlanes; } |
4269bd1b | 545 | |
3a9b5dc8 | 546 | //! @return TRUE if ray tracing mode is supported |
547 | Standard_Boolean HasRayTracing() const { return myHasRayTracing; } | |
548 | ||
549 | //! @return TRUE if textures in ray tracing mode are supported | |
550 | Standard_Boolean HasRayTracingTextures() const { return myHasRayTracingTextures; } | |
551 | ||
552 | //! @return TRUE if adaptive screen sampling in ray tracing mode is supported | |
553 | Standard_Boolean HasRayTracingAdaptiveSampling() const { return myHasRayTracingAdaptiveSampling; } | |
554 | ||
e084dbbc | 555 | //! @return TRUE if atomic adaptive screen sampling in ray tracing mode is supported |
556 | Standard_Boolean HasRayTracingAdaptiveSamplingAtomic() const { return myHasRayTracingAdaptiveSamplingAtomic; } | |
557 | ||
ba00aab7 | 558 | //! Returns TRUE if sRGB rendering is supported. |
559 | bool HasSRGB() const | |
560 | { | |
561 | return hasTexSRGB | |
562 | && hasFboSRGB; | |
563 | } | |
564 | ||
565 | //! Returns TRUE if sRGB rendering is supported and permitted. | |
566 | bool ToRenderSRGB() const | |
567 | { | |
568 | return HasSRGB() | |
569 | && !caps->sRGBDisable | |
570 | && !caps->ffpEnable; | |
571 | } | |
572 | ||
573 | //! Returns TRUE if window/surface buffer is sRGB-ready. | |
574 | //! | |
575 | //! When offscreen FBOs are created in sRGB, but window is not sRGB-ready, | |
576 | //! blitting into window should be done with manual gamma correction. | |
577 | //! | |
578 | //! In desktop OpenGL, window buffer can be considered as sRGB-ready by default, | |
579 | //! even when application has NOT requested sRGB-ready pixel format, | |
580 | //! and rendering is managed via GL_FRAMEBUFFER_SRGB state. | |
581 | //! | |
582 | //! In OpenGL ES, sRGB-ready window surface should be explicitly requested on construction, | |
583 | //! and cannot be disabled/enabled without GL_EXT_sRGB_write_control extension afterwards | |
584 | //! (GL_FRAMEBUFFER_SRGB can be considered as always tuned ON). | |
585 | bool IsWindowSRGB() const { return myIsSRgbWindow; } | |
586 | ||
e5c11edd | 587 | //! Overrides if window/surface buffer is sRGB-ready or not (initialized with the context). |
588 | void SetWindowSRGB (bool theIsSRgb) { myIsSRgbWindow = theIsSRgb; } | |
589 | ||
ba00aab7 | 590 | //! Convert Quantity_ColorRGBA into vec4 |
591 | //! with conversion or no conversion into non-linear sRGB | |
592 | //! basing on ToRenderSRGB() flag. | |
593 | OpenGl_Vec4 Vec4FromQuantityColor (const OpenGl_Vec4& theColor) const | |
594 | { | |
565baee6 | 595 | return myIsSRgbActive |
ba00aab7 | 596 | ? Vec4LinearFromQuantityColor(theColor) |
597 | : Vec4sRGBFromQuantityColor (theColor); | |
598 | } | |
599 | ||
600 | //! Convert Quantity_ColorRGBA into vec4. | |
601 | //! Quantity_Color is expected to be linear RGB, hence conversion is NOT required | |
602 | const OpenGl_Vec4& Vec4LinearFromQuantityColor (const OpenGl_Vec4& theColor) const { return theColor; } | |
603 | ||
604 | //! Convert Quantity_ColorRGBA (linear RGB) into non-linear sRGB vec4. | |
605 | OpenGl_Vec4 Vec4sRGBFromQuantityColor (const OpenGl_Vec4& theColor) const | |
606 | { | |
607 | return Quantity_ColorRGBA::Convert_LinearRGB_To_sRGB (theColor); | |
608 | } | |
609 | ||
67312b79 | 610 | //! Returns TRUE if PBR shading model is supported. |
611 | //! Basically, feature requires OpenGL 3.0+ / OpenGL ES 3.0+ hardware; more precisely: | |
612 | //! - Graphics hardware with moderate capabilities for compiling long enough GLSL program. | |
613 | //! - FBO (e.g. for baking environment). | |
614 | //! - Multi-texturing with >= 4 units (LUT and IBL textures). | |
615 | //! - GL_RG32F texture format (arbTexRG + arbTexFloat) | |
616 | //! - Cubemap texture lookup textureCubeLod()/textureLod() with LOD index within Fragment Shader, | |
617 | //! which requires GLSL OpenGL 3.0+ / OpenGL ES 3.0+ or OpenGL 2.1 + GL_EXT_gpu_shader4 extension. | |
618 | Standard_Boolean HasPBR() const { return myHasPBR; } | |
619 | ||
620 | //! Returns texture unit where Environment Lookup Table is expected to be bound, or 0 if PBR is unavailable. | |
621 | Graphic3d_TextureUnit PBREnvLUTTexUnit() const { return myPBREnvLUTTexUnit; } | |
622 | ||
623 | //! Returns texture unit where Diffuse (irradiance) IBL map's spherical harmonics coefficients is expected to be bound, or 0 if PBR is unavailable. | |
624 | Graphic3d_TextureUnit PBRDiffIBLMapSHTexUnit() const { return myPBRDiffIBLMapSHTexUnit; } | |
625 | ||
626 | //! Returns texture unit where Specular IBL map is expected to be bound, or 0 if PBR is unavailable. | |
627 | Graphic3d_TextureUnit PBRSpecIBLMapTexUnit() const { return myPBRSpecIBLMapTexUnit; } | |
628 | ||
7d3e64ef | 629 | //! Returns true if VBO is supported and permitted. |
630 | inline bool ToUseVbo() const | |
631 | { | |
632 | return core15fwd != NULL | |
633 | && !caps->vboDisable; | |
634 | } | |
635 | ||
7d9e854b | 636 | //! @return cached state of GL_NORMALIZE. |
637 | Standard_Boolean IsGlNormalizeEnabled() const { return myIsGlNormalizeEnabled; } | |
638 | ||
639 | //! Sets GL_NORMALIZE enabled or disabled. | |
640 | //! @return old value of the flag | |
641 | Standard_EXPORT Standard_Boolean SetGlNormalizeEnabled (Standard_Boolean isEnabled); | |
642 | ||
6d0e6be5 | 643 | //! @return cached state of polygon rasterization mode (glPolygonMode()). |
644 | Standard_Integer PolygonMode() const { return myPolygonMode; } | |
645 | ||
646 | //! Sets polygon rasterization mode (glPolygonMode() function). | |
647 | //! @return old value of the rasterization mode. | |
648 | Standard_EXPORT Standard_Integer SetPolygonMode (const Standard_Integer theMode); | |
649 | ||
650 | //! @return cached enabled state of polygon hatching rasterization. | |
651 | bool IsPolygonHatchEnabled() const | |
652 | { | |
653 | return !myHatchStyles.IsNull() && myHatchStyles->TypeOfHatch() != 0; | |
654 | } | |
655 | ||
656 | //! Sets enabled state of polygon hatching rasterization | |
657 | //! without affecting currently selected hatching pattern. | |
658 | //! @return previous state of polygon hatching mode. | |
659 | Standard_EXPORT bool SetPolygonHatchEnabled (const bool theIsEnabled); | |
660 | ||
661 | //! @return cached state of polygon hatch type. | |
662 | Standard_Integer PolygonHatchStyle() const | |
663 | { | |
664 | return myHatchStyles.IsNull() ? Aspect_HS_SOLID : myHatchStyles->TypeOfHatch(); | |
665 | } | |
666 | ||
667 | //! Sets polygon hatch pattern. | |
668 | //! Zero-index value is a default alias for solid filling. | |
669 | //! @param the type of hatch supported by base implementation of | |
670 | //! OpenGl_LineAttributes (Aspect_HatchStyle) or the type supported by custom | |
671 | //! implementation derived from OpenGl_LineAttributes class. | |
672 | //! @return old type of hatch. | |
640d5fe2 | 673 | Standard_EXPORT Standard_Integer SetPolygonHatchStyle (const Handle(Graphic3d_HatchStyle)& theStyle); |
6d0e6be5 | 674 | |
8d1a539c | 675 | //! Sets and applies current polygon offset. |
676 | Standard_EXPORT void SetPolygonOffset (const Graphic3d_PolygonOffset& theOffset); | |
677 | ||
678 | //! Returns currently applied polygon offset parameters. | |
679 | const Graphic3d_PolygonOffset& PolygonOffset() const { return myPolygonOffset; } | |
680 | ||
bc73b006 | 681 | //! Applies matrix into shader manager stored in ModelWorldState to OpenGl. |
682 | //! In "model -> world -> view -> projection" it performs: | |
683 | //! model -> world | |
5e94009d | 684 | Standard_EXPORT void ApplyModelWorldMatrix(); |
c827ea3a | 685 | |
686 | //! Applies matrix stored in WorldViewState to OpenGl. | |
bc73b006 | 687 | //! In "model -> world -> view -> projection" it performs: |
688 | //! model -> world -> view, | |
689 | //! where model -> world is identical matrix | |
5e94009d | 690 | Standard_EXPORT void ApplyWorldViewMatrix(); |
c827ea3a | 691 | |
692 | //! Applies combination of matrices stored in ModelWorldState and WorldViewState to OpenGl. | |
bc73b006 | 693 | //! In "model -> world -> view -> projection" it performs: |
694 | //! model -> world -> view | |
5e94009d | 695 | Standard_EXPORT void ApplyModelViewMatrix(); |
c827ea3a | 696 | |
697 | //! Applies matrix stored in ProjectionState to OpenGl. | |
bc73b006 | 698 | //! In "model -> world -> view -> projection" it performs: |
699 | //! view -> projection | |
5e94009d | 700 | Standard_EXPORT void ApplyProjectionMatrix(); |
c827ea3a | 701 | |
cbf18624 | 702 | public: |
703 | ||
7e7c2f0b | 704 | //! @return messenger instance |
857ffd5e | 705 | inline const Handle(Message_Messenger)& Messenger() const |
cbf18624 | 706 | { |
8fa64b52 | 707 | return ::Message::DefaultMessenger(); |
cbf18624 | 708 | } |
709 | ||
710 | //! Callback for GL_ARB_debug_output extension | |
711 | //! @param theSource message source within GL_DEBUG_SOURCE_ enumeration | |
712 | //! @param theType message type within GL_DEBUG_TYPE_ enumeration | |
713 | //! @param theId message ID within source | |
714 | //! @param theSeverity message severity within GL_DEBUG_SEVERITY_ enumeration | |
715 | //! @param theMessage the message itself | |
716 | Standard_EXPORT void PushMessage (const unsigned int theSource, | |
717 | const unsigned int theType, | |
718 | const unsigned int theId, | |
719 | const unsigned int theSeverity, | |
720 | const TCollection_ExtendedString& theMessage); | |
721 | ||
c87535af | 722 | //! Adds a filter for messages with theId and theSource (GL_DEBUG_SOURCE_) |
723 | Standard_EXPORT Standard_Boolean ExcludeMessage (const unsigned int theSource, | |
724 | const unsigned int theId); | |
b5ac8292 | 725 | |
c87535af | 726 | //! Removes a filter for messages with theId and theSource (GL_DEBUG_SOURCE_) |
727 | Standard_EXPORT Standard_Boolean IncludeMessage (const unsigned int theSource, | |
728 | const unsigned int theId); | |
b5ac8292 | 729 | |
730 | //! @return true if OpenGl context supports left and | |
731 | //! right rendering buffers. | |
732 | Standard_Boolean HasStereoBuffers() const | |
733 | { | |
ca3c13d1 | 734 | #if !defined(GL_ES_VERSION_2_0) |
b5ac8292 | 735 | return myIsStereoBuffers; |
ca3c13d1 | 736 | #else |
737 | return Standard_False; | |
738 | #endif | |
b5ac8292 | 739 | } |
740 | ||
7d3e64ef | 741 | public: //! @name methods to alter or retrieve current state |
742 | ||
15669413 | 743 | //! Return structure holding frame statistics. |
744 | const Handle(OpenGl_FrameStats)& FrameStats() const { return myFrameStats; } | |
745 | ||
5e30547b | 746 | //! Set structure holding frame statistics. |
747 | //! This call makes sense only if application defines OpenGl_FrameStats sub-class. | |
748 | void SetFrameStats (const Handle(OpenGl_FrameStats)& theStats) { myFrameStats = theStats; } | |
749 | ||
3bffef55 | 750 | //! Return cached viewport definition (x, y, width, height). |
751 | const Standard_Integer* Viewport() const { return myViewport; } | |
752 | ||
753 | //! Resize the viewport (alias for glViewport). | |
754 | //! @param theRect viewport definition (x, y, width, height) | |
755 | Standard_EXPORT void ResizeViewport (const Standard_Integer theRect[4]); | |
756 | ||
56689b27 | 757 | //! Return virtual viewport definition (x, y, width, height). |
758 | const Standard_Integer* VirtualViewport() const { return myViewportVirt; } | |
759 | ||
38a0206f | 760 | //! Return active read buffer. |
761 | Standard_Integer ReadBuffer() { return myReadBuffer; } | |
b5ac8292 | 762 | |
38a0206f | 763 | //! Switch read buffer, wrapper for ::glReadBuffer(). |
764 | Standard_EXPORT void SetReadBuffer (const Standard_Integer theReadBuffer); | |
b5ac8292 | 765 | |
a1073ae2 | 766 | //! Return active draw buffer attached to a render target referred by index (layout location). |
c3487460 | 767 | Standard_Integer DrawBuffer (Standard_Integer theIndex = 0) const |
a1073ae2 | 768 | { |
c3487460 | 769 | return theIndex >= myDrawBuffers.Lower() |
770 | && theIndex <= myDrawBuffers.Upper() | |
771 | ? myDrawBuffers.Value (theIndex) | |
772 | : GL_NONE; | |
a1073ae2 | 773 | } |
38a0206f | 774 | |
775 | //! Switch draw buffer, wrapper for ::glDrawBuffer(). | |
776 | Standard_EXPORT void SetDrawBuffer (const Standard_Integer theDrawBuffer); | |
777 | ||
a1073ae2 | 778 | //! Switch draw buffer, wrapper for ::glDrawBuffers (GLsizei, const GLenum*). |
779 | Standard_EXPORT void SetDrawBuffers (const Standard_Integer theNb, const Standard_Integer* theDrawBuffers); | |
780 | ||
38a0206f | 781 | //! Switch read/draw buffers. |
782 | void SetReadDrawBuffer (const Standard_Integer theBuffer) | |
783 | { | |
784 | SetReadBuffer (theBuffer); | |
785 | SetDrawBuffer (theBuffer); | |
786 | } | |
b5ac8292 | 787 | |
ba00aab7 | 788 | //! Returns cached GL_FRAMEBUFFER_SRGB state. |
789 | //! If TRUE, GLSL program is expected to write linear RGB color. | |
790 | //! Otherwise, GLSL program might need manually converting result color into sRGB color space. | |
791 | bool IsFrameBufferSRGB() const { return myIsSRgbActive; } | |
792 | ||
793 | //! Enables/disables GL_FRAMEBUFFER_SRGB flag. | |
794 | //! This flag can be set to: | |
795 | //! - TRUE when writing into offscreen FBO (always expected to be in sRGB or RGBF formats). | |
796 | //! - TRUE when writing into sRGB-ready window buffer (might require choosing proper pixel format on window creation). | |
797 | //! - FALSE if sRGB rendering is not supported or sRGB-not-ready window buffer is used for drawing. | |
798 | //! @param theIsFbo [in] flag indicating writing into offscreen FBO (always expected sRGB-ready when sRGB FBO is supported) | |
799 | //! or into window buffer (FALSE, sRGB-readiness might vary). | |
e5c11edd | 800 | //! @param theIsSRgb [in] flag indicating off-screen FBO is sRGB-ready |
801 | Standard_EXPORT void SetFrameBufferSRGB (bool theIsFbo, bool theIsFboSRgb = true); | |
ba00aab7 | 802 | |
f88457e6 | 803 | //! Return cached flag indicating writing into color buffer is enabled or disabled (glColorMask). |
804 | bool ColorMask() const { return myColorMask; } | |
805 | ||
806 | //! Enable/disable writing into color buffer (wrapper for glColorMask). | |
807 | Standard_EXPORT bool SetColorMask (bool theToWriteColor); | |
808 | ||
2a332745 | 809 | //! Return TRUE if GL_SAMPLE_ALPHA_TO_COVERAGE usage is allowed. |
810 | bool AllowSampleAlphaToCoverage() const { return myAllowAlphaToCov; } | |
811 | ||
812 | //! Allow GL_SAMPLE_ALPHA_TO_COVERAGE usage. | |
813 | void SetAllowSampleAlphaToCoverage (bool theToEnable) { myAllowAlphaToCov = theToEnable; } | |
814 | ||
c40eb6b9 | 815 | //! Return GL_SAMPLE_ALPHA_TO_COVERAGE state. |
816 | bool SampleAlphaToCoverage() const { return myAlphaToCoverage; } | |
817 | ||
818 | //! Enable/disable GL_SAMPLE_ALPHA_TO_COVERAGE. | |
819 | Standard_EXPORT bool SetSampleAlphaToCoverage (bool theToEnable); | |
820 | ||
b6472664 | 821 | //! Return back face culling state. |
822 | bool ToCullBackFaces() const { return myToCullBackFaces; } | |
823 | ||
824 | //! Enable or disable back face culling (glEnable (GL_CULL_FACE)). | |
825 | Standard_EXPORT void SetCullBackFaces (bool theToEnable); | |
826 | ||
b5ac8292 | 827 | //! Fetch OpenGl context state. This class tracks value of several OpenGl |
828 | //! state variables. Consulting the cached values is quicker than | |
829 | //! doing the same via OpenGl API. Call this method if any of the controlled | |
830 | //! OpenGl state variables has a possibility of being out-of-date. | |
831 | Standard_EXPORT void FetchState(); | |
832 | ||
cc8cbabe | 833 | //! @return active textures |
834 | const Handle(OpenGl_TextureSet)& ActiveTextures() const { return myActiveTextures; } | |
835 | ||
72f6dc61 | 836 | //! Bind specified texture set to current context taking into account active GLSL program. |
837 | Standard_DEPRECATED("BindTextures() with explicit GLSL program should be used instead") | |
838 | Handle(OpenGl_TextureSet) BindTextures (const Handle(OpenGl_TextureSet)& theTextures) | |
839 | { | |
840 | return BindTextures (theTextures, myActiveProgram); | |
841 | } | |
842 | ||
843 | //! Bind specified texture set to current context, or unbind previous one when NULL specified. | |
844 | //! @param theTextures [in] texture set to bind | |
845 | //! @param theProgram [in] program attributes; when not NULL, | |
846 | //! mock textures will be bound to texture units expected by GLSL program, but undefined by texture set | |
847 | //! @return previous texture set | |
848 | Standard_EXPORT Handle(OpenGl_TextureSet) BindTextures (const Handle(OpenGl_TextureSet)& theTextures, | |
849 | const Handle(OpenGl_ShaderProgram)& theProgram); | |
cc8cbabe | 850 | |
7d3e64ef | 851 | //! @return active GLSL program |
852 | const Handle(OpenGl_ShaderProgram)& ActiveProgram() const | |
853 | { | |
854 | return myActiveProgram; | |
855 | } | |
856 | ||
857 | //! Bind specified program to current context, | |
858 | //! or unbind previous one when NULL specified. | |
8625ef7e | 859 | //! @return true if some program is bound to context |
860 | Standard_EXPORT Standard_Boolean BindProgram (const Handle(OpenGl_ShaderProgram)& theProgram); | |
861 | ||
299e0ab9 | 862 | //! Setup current shading material. |
bf5f0ca2 | 863 | Standard_EXPORT void SetShadingMaterial (const OpenGl_Aspects* theAspect, |
a1073ae2 | 864 | const Handle(Graphic3d_PresentationAttributes)& theHighlight); |
865 | ||
866 | //! Checks if transparency is required for the given aspect and highlight style. | |
bf5f0ca2 | 867 | Standard_EXPORT static Standard_Boolean CheckIsTransparent (const OpenGl_Aspects* theAspect, |
a1073ae2 | 868 | const Handle(Graphic3d_PresentationAttributes)& theHighlight, |
a71a71de | 869 | Standard_ShortReal& theAlphaFront, |
870 | Standard_ShortReal& theAlphaBack); | |
871 | ||
872 | //! Checks if transparency is required for the given aspect and highlight style. | |
bf5f0ca2 | 873 | static Standard_Boolean CheckIsTransparent (const OpenGl_Aspects* theAspect, |
a71a71de | 874 | const Handle(Graphic3d_PresentationAttributes)& theHighlight) |
875 | { | |
876 | Standard_ShortReal anAlphaFront = 1.0f, anAlphaBack = 1.0f; | |
877 | return CheckIsTransparent (theAspect, theHighlight, anAlphaFront, anAlphaBack); | |
878 | } | |
299e0ab9 | 879 | |
8625ef7e | 880 | //! Setup current color. |
881 | Standard_EXPORT void SetColor4fv (const OpenGl_Vec4& theColor); | |
882 | ||
ac116c22 | 883 | //! Setup type of line. |
884 | Standard_EXPORT void SetTypeOfLine (const Aspect_TypeOfLine theType, | |
885 | const Standard_ShortReal theFactor = 1.0f); | |
886 | ||
3f1675c9 | 887 | //! Setup stipple line pattern with 1.0f factor; wrapper for glLineStipple(). |
888 | void SetLineStipple (const uint16_t thePattern) { SetLineStipple (1.0f, thePattern); } | |
889 | ||
890 | //! Setup type of line; wrapper for glLineStipple(). | |
891 | Standard_EXPORT void SetLineStipple (const Standard_ShortReal theFactor, | |
892 | const uint16_t thePattern); | |
893 | ||
ac116c22 | 894 | //! Setup width of line. |
895 | Standard_EXPORT void SetLineWidth (const Standard_ShortReal theWidth); | |
896 | ||
8625ef7e | 897 | //! Setup point size. |
898 | Standard_EXPORT void SetPointSize (const Standard_ShortReal theSize); | |
7d3e64ef | 899 | |
fd59283a | 900 | //! Setup point sprite origin using GL_POINT_SPRITE_COORD_ORIGIN state: |
901 | //! - GL_UPPER_LEFT when GLSL program is active; | |
902 | //! flipping should be handled in GLSL program for compatibility with OpenGL ES | |
903 | //! - GL_LOWER_LEFT for FFP | |
904 | Standard_EXPORT void SetPointSpriteOrigin(); | |
905 | ||
79f4f036 | 906 | //! Setup texture matrix to active GLSL program or to FFP global state using glMatrixMode (GL_TEXTURE). |
907 | Standard_EXPORT void SetTextureMatrix (const Handle(Graphic3d_TextureParams)& theParams); | |
908 | ||
4e1523ef | 909 | //! Bind default Vertex Array Object |
910 | Standard_EXPORT void BindDefaultVao(); | |
911 | ||
a2e4f780 | 912 | //! Default Frame Buffer Object. |
913 | const Handle(OpenGl_FrameBuffer)& DefaultFrameBuffer() const | |
914 | { | |
915 | return myDefaultFbo; | |
916 | } | |
917 | ||
918 | //! Setup new Default Frame Buffer Object and return previously set. | |
919 | //! This call doesn't change Active FBO! | |
920 | Standard_EXPORT Handle(OpenGl_FrameBuffer) SetDefaultFrameBuffer (const Handle(OpenGl_FrameBuffer)& theFbo); | |
921 | ||
4e1523ef | 922 | //! Return debug context initialization state. |
923 | Standard_Boolean IsDebugContext() const | |
924 | { | |
925 | return myIsGlDebugCtx; | |
926 | } | |
927 | ||
c357e426 | 928 | Standard_EXPORT void EnableFeatures() const; |
929 | ||
930 | Standard_EXPORT void DisableFeatures() const; | |
931 | ||
56689b27 | 932 | //! Return resolution for rendering text. |
933 | unsigned int Resolution() const { return myResolution; } | |
934 | ||
935 | //! Resolution scale factor (rendered resolution to standard resolution). | |
936 | //! This scaling factor for parameters like text size to be properly displayed on device (screen / printer). | |
937 | Standard_ShortReal ResolutionRatio() const { return myResolutionRatio; } | |
938 | ||
939 | //! Rendering scale factor (rendering viewport height to real window buffer height). | |
940 | Standard_ShortReal RenderScale() const { return myRenderScale; } | |
941 | ||
942 | //! Return TRUE if rendering scale factor is not 1. | |
943 | Standard_Boolean HasRenderScale() const { return Abs (myRenderScale - 1.0f) > 0.0001f; } | |
944 | ||
945 | //! Rendering scale factor (inverted value). | |
946 | Standard_ShortReal RenderScaleInv() const { return myRenderScaleInv; } | |
947 | ||
2a332745 | 948 | //! Return scale factor for line width. |
949 | Standard_ShortReal LineWidthScale() const { return myLineWidthScale; } | |
950 | ||
56689b27 | 951 | //! Set resolution ratio. |
952 | //! Note that this method rounds @theRatio to nearest integer. | |
953 | void SetResolution (unsigned int theResolution, | |
954 | Standard_ShortReal theRatio, | |
955 | Standard_ShortReal theScale) | |
956 | { | |
957 | myResolution = (unsigned int )(theScale * theResolution + 0.5f); | |
958 | myRenderScale = theScale; | |
959 | myRenderScaleInv = 1.0f / theScale; | |
960 | SetResolutionRatio (theRatio * theScale); | |
961 | } | |
962 | ||
75c262a9 | 963 | //! Set resolution ratio. |
964 | //! Note that this method rounds @theRatio to nearest integer. | |
965 | void SetResolutionRatio (const Standard_ShortReal theRatio) | |
966 | { | |
56689b27 | 967 | myResolutionRatio = theRatio; |
968 | myLineWidthScale = Max (1.0f, std::floor (theRatio + 0.5f)); | |
75c262a9 | 969 | } |
970 | ||
2a332745 | 971 | //! Return line feater width in pixels. |
972 | Standard_ShortReal LineFeather() const { return myLineFeather; } | |
973 | ||
974 | //! Set line feater width. | |
975 | void SetLineFeather(Standard_ShortReal theValue) { myLineFeather = theValue; } | |
976 | ||
c39bb31b | 977 | //! Return Graphics Driver's vendor. |
978 | const TCollection_AsciiString& Vendor() const { return myVendor; } | |
979 | ||
bc73b006 | 980 | //! Dumps the content of me into the stream |
981 | Standard_EXPORT void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const; | |
982 | ||
983 | //! Dumps the content of openGL state into the stream | |
984 | Standard_EXPORT static void DumpJsonOpenGlState (Standard_OStream& theOStream, Standard_Integer theDepth = -1); | |
985 | ||
08669adf | 986 | //! Set GL_SHADE_MODEL value. |
987 | Standard_EXPORT void SetShadeModel (Graphic3d_TypeOfShadingModel theModel); | |
988 | ||
5f8b738e | 989 | private: |
990 | ||
991 | //! Wrapper to system function to retrieve GL function pointer by name. | |
992 | Standard_EXPORT void* findProc (const char* theFuncName); | |
993 | ||
ee51a9fe | 994 | //! Print error if not all functions have been exported by context for reported version. |
995 | //! Note that this will never happen when using GLX, since returned functions can not be validated. | |
996 | //! @param theGlVerMajor the OpenGL major version with missing functions | |
997 | //! @param theGlVerMinor the OpenGL minor version with missing functions | |
0ae9ac21 | 998 | //! @param theLastFailedProc function name which cannot be found |
999 | Standard_EXPORT void checkWrongVersion (Standard_Integer theGlVerMajor, Standard_Integer theGlVerMinor, | |
1000 | const char* theLastFailedProc); | |
ee51a9fe | 1001 | |
5f8b738e | 1002 | //! Private initialization function that should be called only once. |
4e1523ef | 1003 | Standard_EXPORT void init (const Standard_Boolean theIsCoreProfile); |
5f8b738e | 1004 | |
01ca42b2 | 1005 | public: //! @name core profiles |
1006 | ||
1007 | OpenGl_GlCore11* core11; //!< OpenGL 1.1 core functionality | |
1008 | OpenGl_GlCore11Fwd* core11fwd; //!< OpenGL 1.1 without deprecated entry points | |
1009 | OpenGl_GlCore15* core15; //!< OpenGL 1.5 core functionality | |
1010 | OpenGl_GlCore15Fwd* core15fwd; //!< OpenGL 1.5 without deprecated entry points | |
1011 | OpenGl_GlCore20* core20; //!< OpenGL 2.0 core functionality (includes 1.5) | |
1012 | OpenGl_GlCore20Fwd* core20fwd; //!< OpenGL 2.0 without deprecated entry points | |
1013 | OpenGl_GlCore32* core32; //!< OpenGL 3.2 core profile | |
1014 | OpenGl_GlCore32Back* core32back; //!< OpenGL 3.2 backward compatibility profile | |
25ef750e | 1015 | OpenGl_GlCore33* core33; //!< OpenGL 3.3 core profile |
1016 | OpenGl_GlCore33Back* core33back; //!< OpenGL 3.3 backward compatibility profile | |
01ca42b2 | 1017 | OpenGl_GlCore41* core41; //!< OpenGL 4.1 core profile |
1018 | OpenGl_GlCore41Back* core41back; //!< OpenGL 4.1 backward compatibility profile | |
1019 | OpenGl_GlCore42* core42; //!< OpenGL 4.2 core profile | |
1020 | OpenGl_GlCore42Back* core42back; //!< OpenGL 4.2 backward compatibility profile | |
1021 | OpenGl_GlCore43* core43; //!< OpenGL 4.3 core profile | |
1022 | OpenGl_GlCore43Back* core43back; //!< OpenGL 4.3 backward compatibility profile | |
1023 | OpenGl_GlCore44* core44; //!< OpenGL 4.4 core profile | |
1024 | OpenGl_GlCore44Back* core44back; //!< OpenGL 4.4 backward compatibility profile | |
9491df8c | 1025 | OpenGl_GlCore45* core45; //!< OpenGL 4.5 core profile |
1026 | OpenGl_GlCore45Back* core45back; //!< OpenGL 4.5 backward compatibility profile | |
5f8b738e | 1027 | |
58655684 | 1028 | Handle(OpenGl_Caps) caps; //!< context options |
1029 | ||
01ca42b2 | 1030 | public: //! @name extensions |
5f8b738e | 1031 | |
a1073ae2 | 1032 | Standard_Boolean hasHighp; //!< highp in GLSL ES fragment shader is supported |
1033 | Standard_Boolean hasUintIndex; //!< GLuint for index buffer is supported (always available on desktop; on OpenGL ES - since 3.0 or as extension GL_OES_element_index_uint) | |
1034 | Standard_Boolean hasTexRGBA8; //!< always available on desktop; on OpenGL ES - since 3.0 or as extension GL_OES_rgb8_rgba8 | |
67312b79 | 1035 | Standard_Boolean hasTexFloatLinear; //!< texture-filterable state for 32-bit floating texture formats (always on desktop, GL_OES_texture_float_linear within OpenGL ES) |
ba00aab7 | 1036 | Standard_Boolean hasTexSRGB; //!< sRGB texture formats (desktop OpenGL 2.0, OpenGL ES 3.0 or GL_EXT_texture_sRGB) |
1037 | Standard_Boolean hasFboSRGB; //!< sRGB FBO render targets (desktop OpenGL 2.1, OpenGL ES 3.0) | |
1038 | Standard_Boolean hasSRGBControl; //!< sRGB write control (any desktop OpenGL, OpenGL ES + GL_EXT_sRGB_write_control extension) | |
c39bb31b | 1039 | OpenGl_FeatureFlag hasFlatShading; //!< Complex flag indicating support of Flat shading (Graphic3d_TOSM_FACET) (always available on desktop; on OpenGL ES - since 3.0 or as extension GL_OES_standard_derivatives) |
59515ca6 | 1040 | OpenGl_FeatureFlag hasGlslBitwiseOps; //!< GLSL supports bitwise operations; OpenGL 3.0 / OpenGL ES 3.0 (GLSL 130 / GLSL ES 300) or OpenGL 2.1 + GL_EXT_gpu_shader4 |
a1073ae2 | 1041 | OpenGl_FeatureFlag hasDrawBuffers; //!< Complex flag indicating support of multiple draw buffers (desktop OpenGL 2.0, OpenGL ES 3.0, GL_ARB_draw_buffers, GL_EXT_draw_buffers) |
1042 | OpenGl_FeatureFlag hasFloatBuffer; //!< Complex flag indicating support of float color buffer format (desktop OpenGL 3.0, GL_ARB_color_buffer_float, GL_EXT_color_buffer_float) | |
1043 | OpenGl_FeatureFlag hasHalfFloatBuffer; //!< Complex flag indicating support of half-float color buffer format (desktop OpenGL 3.0, GL_ARB_color_buffer_float, GL_EXT_color_buffer_half_float) | |
1044 | OpenGl_FeatureFlag hasSampleVariables; //!< Complex flag indicating support of MSAA variables in GLSL shader (desktop OpenGL 4.0, GL_ARB_sample_shading) | |
2a332745 | 1045 | OpenGl_FeatureFlag hasGeometryStage; //!< Complex flag indicating support of Geometry shader (desktop OpenGL 3.2, OpenGL ES 3.2, GL_EXT_geometry_shader) |
a1073ae2 | 1046 | Standard_Boolean arbDrawBuffers; //!< GL_ARB_draw_buffers |
1047 | Standard_Boolean arbNPTW; //!< GL_ARB_texture_non_power_of_two | |
1048 | Standard_Boolean arbTexRG; //!< GL_ARB_texture_rg | |
67312b79 | 1049 | Standard_Boolean arbTexFloat; //!< GL_ARB_texture_float (on desktop OpenGL - since 3.0 or as extension GL_ARB_texture_float; on OpenGL ES - since 3.0); @sa hasTexFloatLinear for linear filtering support |
cc8cbabe | 1050 | OpenGl_ArbSamplerObject* arbSamplerObject; //!< GL_ARB_sampler_objects (on desktop OpenGL - since 3.3 or as extension GL_ARB_sampler_objects; on OpenGL ES - since 3.0) |
a1073ae2 | 1051 | OpenGl_ArbTexBindless* arbTexBindless; //!< GL_ARB_bindless_texture |
1052 | OpenGl_ArbTBO* arbTBO; //!< GL_ARB_texture_buffer_object | |
1053 | Standard_Boolean arbTboRGB32; //!< GL_ARB_texture_buffer_object_rgb32 (3-component TBO), in core since 4.0 | |
1054 | OpenGl_ArbIns* arbIns; //!< GL_ARB_draw_instanced | |
1055 | OpenGl_ArbDbg* arbDbg; //!< GL_ARB_debug_output | |
1056 | OpenGl_ArbFBO* arbFBO; //!< GL_ARB_framebuffer_object | |
1057 | OpenGl_ArbFBOBlit* arbFBOBlit; //!< glBlitFramebuffer function, moved out from OpenGl_ArbFBO structure for compatibility with OpenGL ES 2.0 | |
1058 | Standard_Boolean arbSampleShading; //!< GL_ARB_sample_shading | |
1059 | Standard_Boolean extFragDepth; //!< GL_EXT_frag_depth on OpenGL ES 2.0 (gl_FragDepthEXT built-in variable, before OpenGL ES 3.0) | |
1060 | Standard_Boolean extDrawBuffers; //!< GL_EXT_draw_buffers | |
1061 | OpenGl_ExtGS* extGS; //!< GL_EXT_geometry_shader4 | |
1062 | Standard_Boolean extBgra; //!< GL_EXT_bgra or GL_EXT_texture_format_BGRA8888 on OpenGL ES | |
1063 | Standard_Boolean extAnis; //!< GL_EXT_texture_filter_anisotropic | |
1064 | Standard_Boolean extPDS; //!< GL_EXT_packed_depth_stencil | |
1065 | Standard_Boolean atiMem; //!< GL_ATI_meminfo | |
1066 | Standard_Boolean nvxMem; //!< GL_NVX_gpu_memory_info | |
1067 | Standard_Boolean oesSampleVariables; //!< GL_OES_sample_variables | |
8c3237d4 | 1068 | Standard_Boolean oesStdDerivatives; //!< GL_OES_standard_derivatives |
5f8b738e | 1069 | |
8613985b | 1070 | public: //! @name public properties tracking current state |
1071 | ||
1072 | OpenGl_MatrixState<Standard_ShortReal> ModelWorldState; //!< state of orientation matrix | |
1073 | OpenGl_MatrixState<Standard_ShortReal> WorldViewState; //!< state of orientation matrix | |
1074 | OpenGl_MatrixState<Standard_ShortReal> ProjectionState; //!< state of projection matrix | |
1075 | ||
5e27df78 | 1076 | private: // system-dependent fields |
2166f0fa | 1077 | |
da8bb41d | 1078 | #if defined(HAVE_EGL) |
1079 | Aspect_Drawable myWindow; //!< EGL surface : EGLSurface | |
1080 | Aspect_Display myDisplay; //!< EGL connection to the Display : EGLDisplay | |
1081 | Aspect_RenderingContext myGContext; //!< EGL rendering context : EGLContext | |
1082 | #elif defined(_WIN32) | |
2bd4c032 | 1083 | Aspect_Handle myWindow; //!< window handle (owner of GL context) : HWND |
1084 | Aspect_Handle myWindowDC; //!< Device Descriptor handle : HDC | |
1085 | Aspect_RenderingContext myGContext; //!< Rendering Context handle : HGLRC | |
4fe56619 | 1086 | #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX) |
a2e4f780 | 1087 | #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE |
1088 | EAGLContext* myGContext; //!< Rendering Context handle | |
1089 | #else | |
1090 | NSOpenGLContext* myGContext; //!< Rendering Context handle | |
1091 | #endif | |
2bd4c032 | 1092 | #else |
1093 | Aspect_Drawable myWindow; //!< window handle (owner of GL context) : GLXDrawable | |
1094 | Aspect_Display myDisplay; //!< connection to the X-server : Display* | |
1095 | Aspect_RenderingContext myGContext; //!< X-GLX rendering context : GLXContext | |
1096 | #endif | |
1097 | ||
5e27df78 | 1098 | private: // context info |
1099 | ||
c04c30b3 | 1100 | typedef NCollection_Shared< NCollection_DataMap<TCollection_AsciiString, Standard_Integer> > OpenGl_DelayReleaseMap; |
c04c30b3 | 1101 | typedef NCollection_Shared< NCollection_List<Handle(OpenGl_Resource)> > OpenGl_ResourcesStack; |
5e27df78 | 1102 | |
a174a3c5 | 1103 | Handle(OpenGl_ResourcesMap) mySharedResources; //!< shared resources with unique identification key |
1104 | Handle(OpenGl_DelayReleaseMap) myDelayed; //!< shared resources for delayed release | |
3125ebb6 | 1105 | Handle(OpenGl_ResourcesStack) myUnusedResources; //!< stack of resources for delayed clean up |
5e27df78 | 1106 | |
30f0ad28 | 1107 | OpenGl_Clipping myClippingState; //!< state of clip planes |
4269bd1b | 1108 | |
7d9e854b | 1109 | void* myGlLibHandle; //!< optional handle to GL library |
01ca42b2 | 1110 | NCollection_Handle<OpenGl_GlFunctions> |
7d9e854b | 1111 | myFuncs; //!< mega structure for all GL functions |
1112 | Standard_Integer myAnisoMax; //!< maximum level of anisotropy texture filter | |
1113 | Standard_Integer myTexClamp; //!< either GL_CLAMP_TO_EDGE (1.2+) or GL_CLAMP (1.1) | |
1114 | Standard_Integer myMaxTexDim; //!< value for GL_MAX_TEXTURE_SIZE | |
cc8cbabe | 1115 | Standard_Integer myMaxTexCombined; //!< value for GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS |
5c225e8e | 1116 | Standard_Integer myMaxTexUnitsFFP; //!< value for GL_MAX_TEXTURE_UNITS (fixed-function pipeline only) |
6997ff1c | 1117 | Standard_Integer myMaxDumpSizeX; //!< maximum FBO width for image dump |
1118 | Standard_Integer myMaxDumpSizeY; //!< maximum FBO height for image dump | |
7d9e854b | 1119 | Standard_Integer myMaxClipPlanes; //!< value for GL_MAX_CLIP_PLANES |
3c4b62a4 | 1120 | Standard_Integer myMaxMsaaSamples; //!< value for GL_MAX_SAMPLES |
a1073ae2 | 1121 | Standard_Integer myMaxDrawBuffers; //!< value for GL_MAX_DRAW_BUFFERS |
1122 | Standard_Integer myMaxColorAttachments; //!< value for GL_MAX_COLOR_ATTACHMENTS | |
7d9e854b | 1123 | Standard_Integer myGlVerMajor; //!< cached GL version major number |
1124 | Standard_Integer myGlVerMinor; //!< cached GL version minor number | |
1125 | Standard_Boolean myIsInitialized; //!< flag indicates initialization state | |
1126 | Standard_Boolean myIsStereoBuffers; //!< context supports stereo buffering | |
1127 | Standard_Boolean myIsGlNormalizeEnabled; //!< GL_NORMALIZE flag | |
1128 | //!< Used to tell OpenGl that normals should be normalized | |
72f6dc61 | 1129 | Graphic3d_TextureUnit mySpriteTexUnit; //!< sampler2D occSamplerPointSprite, texture unit for point sprite texture |
2166f0fa | 1130 | |
e084dbbc | 1131 | Standard_Boolean myHasRayTracing; //! indicates whether ray tracing mode is supported |
1132 | Standard_Boolean myHasRayTracingTextures; //! indicates whether textures in ray tracing mode are supported | |
1133 | Standard_Boolean myHasRayTracingAdaptiveSampling; //! indicates whether adaptive screen sampling in ray tracing mode is supported | |
1134 | Standard_Boolean myHasRayTracingAdaptiveSamplingAtomic; //! indicates whether atomic adaptive screen sampling in ray tracing mode is supported | |
3a9b5dc8 | 1135 | |
67312b79 | 1136 | Standard_Boolean myHasPBR; //!< indicates whether PBR shading model is supported |
72f6dc61 | 1137 | Graphic3d_TextureUnit myPBREnvLUTTexUnit; //!< sampler2D occEnvLUT, texture unit where environment lookup table is expected to be binded (0 if PBR is not supported) |
1138 | Graphic3d_TextureUnit myPBRDiffIBLMapSHTexUnit; //!< sampler2D occDiffIBLMapSHCoeffs, texture unit where diffuse (irradiance) IBL map's spherical harmonics coefficients is expected to be binded | |
67312b79 | 1139 | //! (0 if PBR is not supported) |
72f6dc61 | 1140 | Graphic3d_TextureUnit myPBRSpecIBLMapTexUnit; //!< samplerCube occSpecIBLMap, texture unit where specular IBL map is expected to be binded (0 if PBR is not supported) |
67312b79 | 1141 | |
30f0ad28 | 1142 | Handle(OpenGl_ShaderManager) myShaderManager; //! support object for managing shader programs |
1143 | ||
7d3e64ef | 1144 | private: //! @name fields tracking current state |
1145 | ||
15669413 | 1146 | Handle(OpenGl_FrameStats) myFrameStats; //!< structure accumulating frame statistics |
6d0e6be5 | 1147 | Handle(OpenGl_ShaderProgram) myActiveProgram; //!< currently active GLSL program |
cc8cbabe | 1148 | Handle(OpenGl_TextureSet) myActiveTextures; //!< currently bound textures |
1149 | //!< currently active sampler objects | |
72f6dc61 | 1150 | Standard_Integer myActiveMockTextures; //!< currently active mock sampler objects |
6d0e6be5 | 1151 | Handle(OpenGl_FrameBuffer) myDefaultFbo; //!< default Frame Buffer Object |
1152 | Handle(OpenGl_LineAttributes) myHatchStyles; //!< resource holding predefined hatch styles patterns | |
72f6dc61 | 1153 | Handle(OpenGl_Texture) myTextureRgbaBlack;//!< mock black texture returning (0, 0, 0, 0) |
1154 | Handle(OpenGl_Texture) myTextureRgbaWhite;//!< mock white texture returning (1, 1, 1, 1) | |
3bffef55 | 1155 | Standard_Integer myViewport[4]; //!< current viewport |
56689b27 | 1156 | Standard_Integer myViewportVirt[4]; //!< virtual viewport |
6d0e6be5 | 1157 | Standard_Integer myPointSpriteOrig; //!< GL_POINT_SPRITE_COORD_ORIGIN state (GL_UPPER_LEFT by default) |
1158 | Standard_Integer myRenderMode; //!< value for active rendering mode | |
08669adf | 1159 | Standard_Integer myShadeModel; //!< currently used shade model (glShadeModel) |
6d0e6be5 | 1160 | Standard_Integer myPolygonMode; //!< currently used polygon rasterization mode (glPolygonMode) |
8d1a539c | 1161 | Graphic3d_PolygonOffset myPolygonOffset; //!< currently applied polygon offset |
6d0e6be5 | 1162 | bool myToCullBackFaces; //!< back face culling mode enabled state (glIsEnabled (GL_CULL_FACE)) |
1163 | Standard_Integer myReadBuffer; //!< current read buffer | |
c3487460 | 1164 | NCollection_Array1<Standard_Integer> |
1165 | myDrawBuffers; //!< current draw buffers | |
6d0e6be5 | 1166 | unsigned int myDefaultVao; //!< default Vertex Array Object |
f88457e6 | 1167 | Standard_Boolean myColorMask; //!< flag indicating writing into color buffer is enabled or disabled (glColorMask) |
2a332745 | 1168 | Standard_Boolean myAllowAlphaToCov; //!< flag allowing GL_SAMPLE_ALPHA_TO_COVERAGE usage |
c40eb6b9 | 1169 | Standard_Boolean myAlphaToCoverage; //!< flag indicating GL_SAMPLE_ALPHA_TO_COVERAGE state |
6d0e6be5 | 1170 | Standard_Boolean myIsGlDebugCtx; //!< debug context initialization state |
ba00aab7 | 1171 | Standard_Boolean myIsSRgbWindow; //!< indicates that window buffer is sRGB-ready |
1172 | Standard_Boolean myIsSRgbActive; //!< flag indicating GL_FRAMEBUFFER_SRGB state | |
6d0e6be5 | 1173 | TCollection_AsciiString myVendor; //!< Graphics Driver's vendor |
1174 | TColStd_PackedMapOfInteger myFilters[6]; //!< messages suppressing filter (for sources from GL_DEBUG_SOURCE_API_ARB to GL_DEBUG_SOURCE_OTHER_ARB) | |
56689b27 | 1175 | unsigned int myResolution; //!< Pixels density (PPI), defines scaling factor for parameters like text size |
6d0e6be5 | 1176 | Standard_ShortReal myResolutionRatio; //!< scaling factor for parameters like text size |
56689b27 | 1177 | //! to be properly displayed on device (screen / printer) |
1178 | Standard_ShortReal myLineWidthScale; //!< scaling factor for line width | |
2a332745 | 1179 | Standard_ShortReal myLineFeather; //!< line feater width in pixels |
56689b27 | 1180 | Standard_ShortReal myRenderScale; //!< scaling factor for rendering resolution |
1181 | Standard_ShortReal myRenderScaleInv; //!< scaling factor for rendering resolution (inverted value) | |
8613985b | 1182 | OpenGl_Material myMatFront; //!< current front material state (cached to reduce GL context updates) |
1183 | OpenGl_Material myMatBack; //!< current back material state | |
c827ea3a | 1184 | |
5e27df78 | 1185 | private: |
1186 | ||
1187 | //! Copying allowed only within Handles | |
1188 | OpenGl_Context (const OpenGl_Context& ); | |
1189 | OpenGl_Context& operator= (const OpenGl_Context& ); | |
1190 | ||
2166f0fa SK |
1191 | }; |
1192 | ||
1193 | #endif // _OpenGl_Context_H__ |