c357e426 |
1 | // Created on: 2011-09-20 |
2 | // Created by: Sergey ZERCHANINOV |
3 | // Copyright (c) 2011-2014 OPEN CASCADE SAS |
4 | // |
5 | // This file is part of Open CASCADE Technology software library. |
6 | // |
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 |
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. |
12 | // |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
15 | |
16 | #include <stdio.h> |
17 | #include <stdlib.h> |
18 | |
19 | #include <OpenGl_GlCore11.hxx> |
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20 | |
21 | #include <Graphic3d_GraphicDriver.hxx> |
851dacdb |
22 | #include <Graphic3d_StructureManager.hxx> |
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23 | #include <Graphic3d_TextureParams.hxx> |
24 | #include <Graphic3d_Texture2Dmanual.hxx> |
25 | #include <Graphic3d_TransformUtils.hxx> |
26 | #include <Image_AlienPixMap.hxx> |
27 | |
28 | #include <NCollection_Mat4.hxx> |
29 | |
30 | #include <OpenGl_AspectLine.hxx> |
31 | #include <OpenGl_Context.hxx> |
32 | #include <OpenGl_Matrix.hxx> |
33 | #include <OpenGl_Workspace.hxx> |
34 | #include <OpenGl_View.hxx> |
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35 | #include <OpenGl_GraduatedTrihedron.hxx> |
36 | #include <OpenGl_PrimitiveArray.hxx> |
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37 | #include <OpenGl_ShaderManager.hxx> |
38 | #include <OpenGl_ShaderProgram.hxx> |
39 | #include <OpenGl_Structure.hxx> |
40 | #include <OpenGl_ArbFBO.hxx> |
41 | |
a0b49de4 |
42 | namespace |
43 | { |
44 | //! Format Frame Buffer format for logging messages. |
45 | static TCollection_AsciiString printFboFormat (const Handle(OpenGl_FrameBuffer)& theFbo) |
46 | { |
47 | return TCollection_AsciiString() + theFbo->GetInitVPSizeX() + "x" + theFbo->GetInitVPSizeY() + "@" + theFbo->NbSamples(); |
48 | } |
49 | |
50 | //! Return TRUE if Frame Buffer initialized has failed with the same parameters. |
51 | static bool checkWasFailedFbo (const Handle(OpenGl_FrameBuffer)& theFboToCheck, |
52 | Standard_Integer theSizeX, |
53 | Standard_Integer theSizeY, |
54 | Standard_Integer theNbSamples) |
55 | { |
56 | return !theFboToCheck->IsValid() |
57 | && theFboToCheck->GetInitVPSizeX() == theSizeX |
58 | && theFboToCheck->GetInitVPSizeY() == theSizeY |
59 | && theFboToCheck->NbSamples() == theNbSamples; |
60 | } |
61 | |
62 | //! Return TRUE if Frame Buffer initialized has failed with the same parameters. |
63 | static bool checkWasFailedFbo (const Handle(OpenGl_FrameBuffer)& theFboToCheck, |
64 | const Handle(OpenGl_FrameBuffer)& theFboRef) |
65 | { |
66 | return checkWasFailedFbo (theFboToCheck, theFboRef->GetVPSizeX(), theFboRef->GetVPSizeY(), theFboRef->NbSamples()); |
67 | } |
68 | } |
69 | |
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70 | //======================================================================= |
a521d90d |
71 | //function : drawBackground |
c357e426 |
72 | //purpose : |
73 | //======================================================================= |
a521d90d |
74 | void OpenGl_View::drawBackground (const Handle(OpenGl_Workspace)& theWorkspace) |
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75 | { |
76 | const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext(); |
77 | |
8613985b |
78 | if (!myBgTextureArray->IsDefined() // no texture |
79 | && !myBgGradientArray->IsDefined()) // no gradient |
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80 | { |
81 | return; |
82 | } |
83 | |
84 | const Standard_Boolean wasUsedZBuffer = theWorkspace->SetUseZBuffer (Standard_False); |
85 | if (wasUsedZBuffer) |
86 | { |
87 | aCtx->core11fwd->glDisable (GL_DEPTH_TEST); |
88 | } |
89 | |
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90 | // Drawing background gradient if: |
91 | // - gradient fill type is not Aspect_GFM_NONE and |
92 | // - either background texture is no specified or it is drawn in Aspect_FM_CENTERED mode |
93 | if (myBgGradientArray->IsDefined() |
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94 | && (!myTextureParams->Aspect()->ToMapTexture() |
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95 | || myBgTextureArray->TextureFillMethod() == Aspect_FM_CENTERED |
96 | || myBgTextureArray->TextureFillMethod() == Aspect_FM_NONE)) |
97 | { |
98 | #if !defined(GL_ES_VERSION_2_0) |
99 | GLint aShadingModelOld = GL_SMOOTH; |
100 | if (aCtx->core11 != NULL) |
101 | { |
102 | aCtx->core11fwd->glDisable (GL_LIGHTING); |
103 | aCtx->core11fwd->glGetIntegerv (GL_SHADE_MODEL, &aShadingModelOld); |
104 | aCtx->core11->glShadeModel (GL_SMOOTH); |
105 | } |
106 | #endif |
107 | |
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108 | myBgGradientArray->Render (theWorkspace); |
109 | |
110 | #if !defined(GL_ES_VERSION_2_0) |
111 | if (aCtx->core11 != NULL) |
112 | { |
113 | aCtx->core11->glShadeModel (aShadingModelOld); |
114 | } |
115 | #endif |
116 | } |
117 | |
118 | // Drawing background image if it is defined |
119 | // (texture is defined and fill type is not Aspect_FM_NONE) |
120 | if (myBgTextureArray->IsDefined() |
b6472664 |
121 | && myTextureParams->Aspect()->ToMapTexture()) |
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122 | { |
123 | aCtx->core11fwd->glDisable (GL_BLEND); |
124 | |
125 | const OpenGl_AspectFace* anOldAspectFace = theWorkspace->SetAspectFace (myTextureParams); |
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126 | myBgTextureArray->Render (theWorkspace); |
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127 | theWorkspace->SetAspectFace (anOldAspectFace); |
128 | } |
129 | |
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130 | if (wasUsedZBuffer) |
131 | { |
132 | theWorkspace->SetUseZBuffer (Standard_True); |
133 | aCtx->core11fwd->glEnable (GL_DEPTH_TEST); |
134 | } |
135 | } |
136 | |
137 | //======================================================================= |
138 | //function : Redraw |
139 | //purpose : |
140 | //======================================================================= |
141 | void OpenGl_View::Redraw() |
142 | { |
7ccf8676 |
143 | const Standard_Boolean wasDisabledMSAA = myToDisableMSAA; |
144 | const Standard_Boolean hadFboBlit = myHasFboBlit; |
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145 | if (myRenderParams.Method == Graphic3d_RM_RAYTRACING |
146 | && !myCaps->vboDisable |
147 | && !myCaps->keepArrayData) |
148 | { |
851dacdb |
149 | // caps are shared across all views, thus we need to invalidate all of them |
150 | // if (myWasRedrawnGL) { myStructureManager->SetDeviceLost(); } |
151 | myDriver->setDeviceLost(); |
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152 | myCaps->keepArrayData = Standard_True; |
153 | } |
154 | |
155 | if (!myWorkspace->Activate()) |
156 | { |
157 | return; |
158 | } |
159 | |
160 | myWindow->SetSwapInterval(); |
161 | |
162 | ++myFrameCounter; |
7c3ef2f7 |
163 | const Graphic3d_StereoMode aStereoMode = myRenderParams.StereoMode; |
164 | Graphic3d_Camera::Projection aProjectType = myCamera->ProjectionType(); |
165 | Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext(); |
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166 | |
167 | // release pending GL resources |
168 | aCtx->ReleaseDelayed(); |
169 | |
170 | // fetch OpenGl context state |
171 | aCtx->FetchState(); |
172 | |
b128c892 |
173 | OpenGl_FrameBuffer* aFrameBuffer = myFBO.operator->(); |
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174 | bool toSwap = aCtx->IsRender() |
175 | && !aCtx->caps->buffersNoSwap |
176 | && aFrameBuffer == NULL; |
177 | |
178 | Standard_Integer aSizeX = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeX() : myWindow->Width(); |
179 | Standard_Integer aSizeY = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeY() : myWindow->Height(); |
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180 | Standard_Integer aRendSizeX = Standard_Integer(myRenderParams.RenderResolutionScale * aSizeX + 0.5f); |
181 | Standard_Integer aRendSizeY = Standard_Integer(myRenderParams.RenderResolutionScale * aSizeY + 0.5f); |
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182 | |
3c4b62a4 |
183 | // determine multisampling parameters |
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184 | Standard_Integer aNbSamples = !myToDisableMSAA && aSizeX == aRendSizeX |
7ccf8676 |
185 | ? Max (Min (myRenderParams.NbMsaaSamples, aCtx->MaxMsaaSamples()), 0) |
186 | : 0; |
3c4b62a4 |
187 | if (aNbSamples != 0) |
188 | { |
189 | aNbSamples = OpenGl_Context::GetPowerOfTwo (aNbSamples, aCtx->MaxMsaaSamples()); |
190 | } |
191 | |
a1073ae2 |
192 | bool toUseOit = myRenderParams.TransparencyMethod == Graphic3d_RTM_BLEND_OIT |
193 | && checkOitCompatibility (aCtx, aNbSamples > 0); |
194 | |
195 | const bool toInitImmediateFbo = myTransientDrawToFront |
196 | && (!aCtx->caps->useSystemBuffer || (toUseOit && HasImmediateStructures())); |
197 | |
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198 | if ( aFrameBuffer == NULL |
199 | && !aCtx->DefaultFrameBuffer().IsNull() |
200 | && aCtx->DefaultFrameBuffer()->IsValid()) |
201 | { |
202 | aFrameBuffer = aCtx->DefaultFrameBuffer().operator->(); |
203 | } |
204 | |
205 | if (myHasFboBlit |
3c4b62a4 |
206 | && (myTransientDrawToFront |
207 | || aProjectType == Graphic3d_Camera::Projection_Stereo |
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208 | || aNbSamples != 0 |
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209 | || toUseOit |
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210 | || aSizeX != aRendSizeX)) |
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211 | { |
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212 | if (myMainSceneFbos[0]->GetVPSizeX() != aRendSizeX |
213 | || myMainSceneFbos[0]->GetVPSizeY() != aRendSizeY |
3c4b62a4 |
214 | || myMainSceneFbos[0]->NbSamples() != aNbSamples) |
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215 | { |
521b0d7f |
216 | if (!myTransientDrawToFront) |
217 | { |
218 | myImmediateSceneFbos[0]->Release (aCtx.operator->()); |
219 | myImmediateSceneFbos[1]->Release (aCtx.operator->()); |
220 | myImmediateSceneFbos[0]->ChangeViewport (0, 0); |
221 | myImmediateSceneFbos[1]->ChangeViewport (0, 0); |
222 | } |
223 | |
c357e426 |
224 | // prepare FBOs containing main scene |
225 | // for further blitting and rendering immediate presentations on top |
226 | if (aCtx->core20fwd != NULL) |
227 | { |
a0b49de4 |
228 | const bool wasFailedMain0 = checkWasFailedFbo (myMainSceneFbos[0], aRendSizeX, aRendSizeY, aNbSamples); |
229 | if (!myMainSceneFbos[0]->Init (aCtx, aRendSizeX, aRendSizeY, myFboColorFormat, myFboDepthFormat, aNbSamples) |
230 | && !wasFailedMain0) |
231 | { |
232 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Main FBO " |
233 | + printFboFormat (myMainSceneFbos[0]) + " initialization has failed"; |
234 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
235 | } |
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236 | } |
a1073ae2 |
237 | } |
238 | if (myMainSceneFbos[0]->IsValid() && (toInitImmediateFbo || myImmediateSceneFbos[0]->IsValid())) |
239 | { |
a0b49de4 |
240 | const bool wasFailedImm0 = checkWasFailedFbo (myImmediateSceneFbos[0], myMainSceneFbos[0]); |
241 | if (!myImmediateSceneFbos[0]->InitLazy (aCtx, *myMainSceneFbos[0]) |
242 | && !wasFailedImm0) |
243 | { |
244 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Immediate FBO " |
245 | + printFboFormat (myImmediateSceneFbos[0]) + " initialization has failed"; |
246 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
247 | } |
c357e426 |
248 | } |
249 | } |
250 | else |
251 | { |
252 | myMainSceneFbos [0]->Release (aCtx.operator->()); |
253 | myMainSceneFbos [1]->Release (aCtx.operator->()); |
254 | myImmediateSceneFbos[0]->Release (aCtx.operator->()); |
255 | myImmediateSceneFbos[1]->Release (aCtx.operator->()); |
256 | myMainSceneFbos [0]->ChangeViewport (0, 0); |
257 | myMainSceneFbos [1]->ChangeViewport (0, 0); |
258 | myImmediateSceneFbos[0]->ChangeViewport (0, 0); |
259 | myImmediateSceneFbos[1]->ChangeViewport (0, 0); |
260 | } |
261 | |
262 | if (aProjectType == Graphic3d_Camera::Projection_Stereo |
263 | && myMainSceneFbos[0]->IsValid()) |
264 | { |
a0b49de4 |
265 | const bool wasFailedMain1 = checkWasFailedFbo (myMainSceneFbos[1], myMainSceneFbos[0]); |
266 | if (!myMainSceneFbos[1]->InitLazy (aCtx, *myMainSceneFbos[0]) |
267 | && !wasFailedMain1) |
268 | { |
269 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Main FBO (second) " |
270 | + printFboFormat (myMainSceneFbos[1]) + " initialization has failed"; |
271 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
272 | } |
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273 | if (!myMainSceneFbos[1]->IsValid()) |
274 | { |
275 | // no enough memory? |
276 | aProjectType = Graphic3d_Camera::Projection_Perspective; |
277 | } |
278 | else if (!myTransientDrawToFront) |
279 | { |
280 | // |
281 | } |
282 | else if (!aCtx->HasStereoBuffers() || aStereoMode != Graphic3d_StereoMode_QuadBuffer) |
283 | { |
a0b49de4 |
284 | const bool wasFailedImm0 = checkWasFailedFbo (myImmediateSceneFbos[0], myMainSceneFbos[0]); |
285 | const bool wasFailedImm1 = checkWasFailedFbo (myImmediateSceneFbos[1], myMainSceneFbos[0]); |
286 | if (!myImmediateSceneFbos[0]->InitLazy (aCtx, *myMainSceneFbos[0]) |
287 | && !wasFailedImm0) |
288 | { |
289 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Immediate FBO (first) " |
290 | + printFboFormat (myImmediateSceneFbos[0]) + " initialization has failed"; |
291 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
292 | } |
293 | if (!myImmediateSceneFbos[1]->InitLazy (aCtx, *myMainSceneFbos[0]) |
294 | && !wasFailedImm1) |
295 | { |
296 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Immediate FBO (first) " |
297 | + printFboFormat (myImmediateSceneFbos[1]) + " initialization has failed"; |
298 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
299 | } |
c357e426 |
300 | if (!myImmediateSceneFbos[0]->IsValid() |
301 | || !myImmediateSceneFbos[1]->IsValid()) |
302 | { |
303 | aProjectType = Graphic3d_Camera::Projection_Perspective; |
304 | } |
305 | } |
306 | } |
307 | |
a1073ae2 |
308 | // create color and coverage accumulation buffers required for OIT algorithm |
309 | if (toUseOit) |
310 | { |
311 | Standard_Integer anFboIt = 0; |
312 | for (; anFboIt < 2; ++anFboIt) |
313 | { |
314 | Handle(OpenGl_FrameBuffer)& aMainSceneFbo = myMainSceneFbos [anFboIt]; |
315 | Handle(OpenGl_FrameBuffer)& aMainSceneFboOit = myMainSceneFbosOit [anFboIt]; |
316 | Handle(OpenGl_FrameBuffer)& anImmediateSceneFbo = myImmediateSceneFbos [anFboIt]; |
317 | Handle(OpenGl_FrameBuffer)& anImmediateSceneFboOit = myImmediateSceneFbosOit[anFboIt]; |
318 | if (aMainSceneFbo->IsValid() |
319 | && (aMainSceneFboOit->GetVPSizeX() != aRendSizeX |
320 | || aMainSceneFboOit->GetVPSizeY() != aRendSizeY |
321 | || aMainSceneFboOit->NbSamples() != aNbSamples)) |
322 | { |
323 | Standard_Integer aColorConfig = 0; |
324 | for (;;) // seemly responding to driver limitation (GL_FRAMEBUFFER_UNSUPPORTED) |
325 | { |
326 | if (myFboOitColorConfig.IsEmpty()) |
327 | { |
328 | if (!chooseOitColorConfiguration (aCtx, aColorConfig++, myFboOitColorConfig)) |
329 | { |
330 | break; |
331 | } |
332 | } |
333 | if (aMainSceneFboOit->Init (aCtx, aRendSizeX, aRendSizeY, myFboOitColorConfig, aMainSceneFbo->DepthStencilTexture(), aNbSamples)) |
334 | { |
335 | break; |
336 | } |
337 | myFboOitColorConfig.Clear(); |
338 | } |
339 | if (!aMainSceneFboOit->IsValid()) |
340 | { |
341 | break; |
342 | } |
343 | } |
344 | else if (!aMainSceneFbo->IsValid()) |
345 | { |
346 | aMainSceneFboOit->Release (aCtx.operator->()); |
347 | aMainSceneFboOit->ChangeViewport (0, 0); |
348 | } |
349 | |
350 | if (anImmediateSceneFbo->IsValid() |
351 | && (anImmediateSceneFboOit->GetVPSizeX() != aRendSizeX |
352 | || anImmediateSceneFboOit->GetVPSizeY() != aRendSizeY |
353 | || anImmediateSceneFboOit->NbSamples() != aNbSamples)) |
354 | { |
355 | if (!anImmediateSceneFboOit->Init (aCtx, aRendSizeX, aRendSizeY, myFboOitColorConfig, |
356 | anImmediateSceneFbo->DepthStencilTexture(), aNbSamples)) |
357 | { |
358 | break; |
359 | } |
360 | } |
361 | else if (!anImmediateSceneFbo->IsValid()) |
362 | { |
363 | anImmediateSceneFboOit->Release (aCtx.operator->()); |
364 | anImmediateSceneFboOit->ChangeViewport (0, 0); |
365 | } |
366 | } |
367 | if (anFboIt == 0) // only the first OIT framebuffer is mandatory |
368 | { |
369 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
370 | "Initialization of float texture framebuffer for use with\n" |
371 | " blended order-independent transparency rendering algorithm has failed.\n" |
372 | " Blended order-independent transparency will not be available.\n"); |
373 | if (aNbSamples > 0) |
374 | { |
375 | myToDisableOITMSAA = Standard_True; |
376 | } |
377 | else |
378 | { |
379 | myToDisableOIT = Standard_True; |
380 | } |
381 | toUseOit = false; |
382 | } |
383 | } |
384 | if (!toUseOit && myMainSceneFbosOit[0]->IsValid()) |
385 | { |
386 | myMainSceneFbosOit [0]->Release (aCtx.operator->()); |
387 | myMainSceneFbosOit [1]->Release (aCtx.operator->()); |
388 | myImmediateSceneFbosOit[0]->Release (aCtx.operator->()); |
389 | myImmediateSceneFbosOit[1]->Release (aCtx.operator->()); |
390 | myMainSceneFbosOit [0]->ChangeViewport (0, 0); |
391 | myMainSceneFbosOit [1]->ChangeViewport (0, 0); |
392 | myImmediateSceneFbosOit[0]->ChangeViewport (0, 0); |
393 | myImmediateSceneFbosOit[1]->ChangeViewport (0, 0); |
394 | } |
395 | |
c357e426 |
396 | if (aProjectType == Graphic3d_Camera::Projection_Stereo) |
397 | { |
398 | OpenGl_FrameBuffer* aMainFbos[2] = |
399 | { |
400 | myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL, |
401 | myMainSceneFbos[1]->IsValid() ? myMainSceneFbos[1].operator->() : NULL |
402 | }; |
a1073ae2 |
403 | OpenGl_FrameBuffer* aMainFbosOit[2] = |
404 | { |
405 | myMainSceneFbosOit[0]->IsValid() ? myMainSceneFbosOit[0].operator->() : NULL, |
406 | myMainSceneFbosOit[1]->IsValid() ? myMainSceneFbosOit[1].operator->() : |
407 | myMainSceneFbosOit[0]->IsValid() ? myMainSceneFbosOit[0].operator->() : NULL |
408 | }; |
409 | |
c357e426 |
410 | OpenGl_FrameBuffer* anImmFbos[2] = |
411 | { |
412 | myImmediateSceneFbos[0]->IsValid() ? myImmediateSceneFbos[0].operator->() : NULL, |
413 | myImmediateSceneFbos[1]->IsValid() ? myImmediateSceneFbos[1].operator->() : NULL |
414 | }; |
a1073ae2 |
415 | OpenGl_FrameBuffer* anImmFbosOit[2] = |
416 | { |
417 | myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL, |
418 | myImmediateSceneFbosOit[1]->IsValid() ? myImmediateSceneFbosOit[1].operator->() : |
419 | myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL |
420 | }; |
c357e426 |
421 | |
422 | if (!myTransientDrawToFront) |
423 | { |
a1073ae2 |
424 | anImmFbos [0] = aMainFbos [0]; |
425 | anImmFbos [1] = aMainFbos [1]; |
426 | anImmFbosOit[0] = aMainFbosOit[0]; |
427 | anImmFbosOit[1] = aMainFbosOit[1]; |
c357e426 |
428 | } |
429 | else if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip |
430 | || aStereoMode == Graphic3d_StereoMode_QuadBuffer) |
431 | { |
a1073ae2 |
432 | anImmFbos [0] = NULL; |
433 | anImmFbos [1] = NULL; |
434 | anImmFbosOit[0] = NULL; |
435 | anImmFbosOit[1] = NULL; |
c357e426 |
436 | } |
437 | |
438 | #if !defined(GL_ES_VERSION_2_0) |
439 | aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_LEFT : GL_BACK); |
440 | #endif |
56689b27 |
441 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
442 | aMainFbos[0] != NULL ? myRenderParams.RenderResolutionScale : 1.0f); |
443 | |
a1073ae2 |
444 | redraw (Graphic3d_Camera::Projection_MonoLeftEye, aMainFbos[0], aMainFbosOit[0]); |
c357e426 |
445 | myBackBufferRestored = Standard_True; |
446 | myIsImmediateDrawn = Standard_False; |
447 | #if !defined(GL_ES_VERSION_2_0) |
448 | aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_LEFT : GL_BACK); |
449 | #endif |
56689b27 |
450 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
451 | anImmFbos[0] != NULL ? myRenderParams.RenderResolutionScale : 1.0f); |
a1073ae2 |
452 | if (!redrawImmediate (Graphic3d_Camera::Projection_MonoLeftEye, aMainFbos[0], anImmFbos[0], anImmFbosOit[0])) |
c357e426 |
453 | { |
454 | toSwap = false; |
455 | } |
456 | else if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip && toSwap) |
457 | { |
458 | aCtx->SwapBuffers(); |
459 | } |
460 | |
461 | #if !defined(GL_ES_VERSION_2_0) |
462 | aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_RIGHT : GL_BACK); |
463 | #endif |
56689b27 |
464 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
465 | aMainFbos[1] != NULL ? myRenderParams.RenderResolutionScale : 1.0f); |
466 | |
a1073ae2 |
467 | redraw (Graphic3d_Camera::Projection_MonoRightEye, aMainFbos[1], aMainFbosOit[1]); |
c357e426 |
468 | myBackBufferRestored = Standard_True; |
469 | myIsImmediateDrawn = Standard_False; |
56689b27 |
470 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
471 | anImmFbos[1] != NULL ? myRenderParams.RenderResolutionScale : 1.0f); |
a1073ae2 |
472 | if (!redrawImmediate (Graphic3d_Camera::Projection_MonoRightEye, aMainFbos[1], anImmFbos[1], anImmFbosOit[1])) |
c357e426 |
473 | { |
474 | toSwap = false; |
475 | } |
476 | |
477 | if (anImmFbos[0] != NULL) |
478 | { |
56689b27 |
479 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), 1.0f); |
3c4b62a4 |
480 | drawStereoPair (aFrameBuffer); |
c357e426 |
481 | } |
482 | } |
483 | else |
484 | { |
a1073ae2 |
485 | OpenGl_FrameBuffer* aMainFbo = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : aFrameBuffer; |
486 | OpenGl_FrameBuffer* aMainFboOit = myMainSceneFbosOit[0]->IsValid() ? myMainSceneFbosOit[0].operator->() : NULL; |
487 | OpenGl_FrameBuffer* anImmFbo = aFrameBuffer; |
488 | OpenGl_FrameBuffer* anImmFboOit = NULL; |
489 | if (!myTransientDrawToFront) |
c357e426 |
490 | { |
a1073ae2 |
491 | anImmFbo = aMainFbo; |
492 | anImmFboOit = aMainFboOit; |
c357e426 |
493 | } |
a1073ae2 |
494 | else if (myImmediateSceneFbos[0]->IsValid()) |
521b0d7f |
495 | { |
a1073ae2 |
496 | anImmFbo = myImmediateSceneFbos[0].operator->(); |
497 | anImmFboOit = myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL; |
521b0d7f |
498 | } |
c357e426 |
499 | |
500 | #if !defined(GL_ES_VERSION_2_0) |
3bffef55 |
501 | if (aMainFbo == NULL) |
c357e426 |
502 | { |
503 | aCtx->SetReadDrawBuffer (GL_BACK); |
504 | } |
505 | #endif |
56689b27 |
506 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
507 | aMainFbo != aFrameBuffer ? myRenderParams.RenderResolutionScale : 1.0f); |
a1073ae2 |
508 | |
509 | redraw (aProjectType, aMainFbo, aMainFboOit); |
c357e426 |
510 | myBackBufferRestored = Standard_True; |
511 | myIsImmediateDrawn = Standard_False; |
56689b27 |
512 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
513 | anImmFbo != aFrameBuffer ? myRenderParams.RenderResolutionScale : 1.0f); |
a1073ae2 |
514 | if (!redrawImmediate (aProjectType, aMainFbo, anImmFbo, anImmFboOit)) |
c357e426 |
515 | { |
516 | toSwap = false; |
517 | } |
518 | |
519 | if (anImmFbo != NULL |
520 | && anImmFbo != aFrameBuffer) |
521 | { |
522 | blitBuffers (anImmFbo, aFrameBuffer, myToFlipOutput); |
523 | } |
524 | } |
525 | |
bf02aa7d |
526 | if (myRenderParams.Method == Graphic3d_RM_RAYTRACING |
527 | && myRenderParams.IsGlobalIlluminationEnabled) |
528 | { |
529 | myAccumFrames++; |
530 | } |
531 | |
c357e426 |
532 | // bind default FBO |
533 | bindDefaultFbo(); |
534 | |
7ccf8676 |
535 | if (wasDisabledMSAA != myToDisableMSAA |
536 | || hadFboBlit != myHasFboBlit) |
537 | { |
538 | // retry on error |
539 | Redraw(); |
540 | } |
541 | |
8613985b |
542 | // reset state for safety |
543 | aCtx->BindProgram (Handle(OpenGl_ShaderProgram)()); |
544 | aCtx->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)()); |
545 | |
c357e426 |
546 | // Swap the buffers |
547 | if (toSwap) |
548 | { |
549 | aCtx->SwapBuffers(); |
550 | if (!myMainSceneFbos[0]->IsValid()) |
551 | { |
552 | myBackBufferRestored = Standard_False; |
553 | } |
554 | } |
555 | else |
556 | { |
557 | aCtx->core11fwd->glFlush(); |
558 | } |
559 | |
560 | // reset render mode state |
561 | aCtx->FetchState(); |
562 | |
563 | myWasRedrawnGL = Standard_True; |
564 | } |
565 | |
566 | // ======================================================================= |
567 | // function : RedrawImmediate |
568 | // purpose : |
569 | // ======================================================================= |
570 | void OpenGl_View::RedrawImmediate() |
571 | { |
572 | if (!myWorkspace->Activate()) |
573 | return; |
574 | |
575 | Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext(); |
576 | if (!myTransientDrawToFront |
577 | || !myBackBufferRestored |
578 | || (aCtx->caps->buffersNoSwap && !myMainSceneFbos[0]->IsValid())) |
579 | { |
580 | Redraw(); |
581 | return; |
582 | } |
583 | |
584 | const Graphic3d_StereoMode aStereoMode = myRenderParams.StereoMode; |
585 | Graphic3d_Camera::Projection aProjectType = myCamera->ProjectionType(); |
b128c892 |
586 | OpenGl_FrameBuffer* aFrameBuffer = myFBO.operator->(); |
c357e426 |
587 | |
588 | if ( aFrameBuffer == NULL |
589 | && !aCtx->DefaultFrameBuffer().IsNull() |
590 | && aCtx->DefaultFrameBuffer()->IsValid()) |
591 | { |
592 | aFrameBuffer = aCtx->DefaultFrameBuffer().operator->(); |
593 | } |
594 | |
595 | if (aProjectType == Graphic3d_Camera::Projection_Stereo) |
596 | { |
597 | if (myMainSceneFbos[0]->IsValid() |
598 | && !myMainSceneFbos[1]->IsValid()) |
599 | { |
600 | aProjectType = Graphic3d_Camera::Projection_Perspective; |
601 | } |
602 | } |
603 | |
604 | bool toSwap = false; |
605 | if (aProjectType == Graphic3d_Camera::Projection_Stereo) |
606 | { |
607 | OpenGl_FrameBuffer* aMainFbos[2] = |
608 | { |
609 | myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL, |
610 | myMainSceneFbos[1]->IsValid() ? myMainSceneFbos[1].operator->() : NULL |
611 | }; |
612 | OpenGl_FrameBuffer* anImmFbos[2] = |
613 | { |
614 | myImmediateSceneFbos[0]->IsValid() ? myImmediateSceneFbos[0].operator->() : NULL, |
615 | myImmediateSceneFbos[1]->IsValid() ? myImmediateSceneFbos[1].operator->() : NULL |
616 | }; |
a1073ae2 |
617 | OpenGl_FrameBuffer* anImmFbosOit[2] = |
618 | { |
619 | myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL, |
620 | myImmediateSceneFbosOit[1]->IsValid() ? myImmediateSceneFbosOit[1].operator->() : |
621 | myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL |
622 | }; |
c357e426 |
623 | if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip |
624 | || aStereoMode == Graphic3d_StereoMode_QuadBuffer) |
625 | { |
a1073ae2 |
626 | anImmFbos[0] = NULL; |
627 | anImmFbos[1] = NULL; |
628 | anImmFbosOit[0] = NULL; |
629 | anImmFbosOit[1] = NULL; |
c357e426 |
630 | } |
631 | |
632 | if (aCtx->arbFBO != NULL) |
633 | { |
634 | aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER); |
635 | } |
636 | #if !defined(GL_ES_VERSION_2_0) |
637 | if (anImmFbos[0] == NULL) |
638 | { |
639 | aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_LEFT : GL_BACK); |
640 | } |
641 | #endif |
56689b27 |
642 | |
643 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
644 | anImmFbos[0] != NULL ? myRenderParams.RenderResolutionScale : 1.0f); |
c357e426 |
645 | toSwap = redrawImmediate (Graphic3d_Camera::Projection_MonoLeftEye, |
646 | aMainFbos[0], |
647 | anImmFbos[0], |
a1073ae2 |
648 | anImmFbosOit[0], |
c357e426 |
649 | Standard_True) || toSwap; |
650 | if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip |
651 | && toSwap |
652 | && !aCtx->caps->buffersNoSwap) |
653 | { |
654 | aCtx->SwapBuffers(); |
655 | } |
656 | |
657 | if (aCtx->arbFBO != NULL) |
658 | { |
659 | aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER); |
660 | } |
661 | #if !defined(GL_ES_VERSION_2_0) |
662 | if (anImmFbos[1] == NULL) |
663 | { |
664 | aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_RIGHT : GL_BACK); |
665 | } |
666 | #endif |
56689b27 |
667 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
668 | anImmFbos[1] != NULL ? myRenderParams.RenderResolutionScale : 1.0f); |
c357e426 |
669 | toSwap = redrawImmediate (Graphic3d_Camera::Projection_MonoRightEye, |
670 | aMainFbos[1], |
671 | anImmFbos[1], |
a1073ae2 |
672 | anImmFbosOit[1], |
c357e426 |
673 | Standard_True) || toSwap; |
674 | if (anImmFbos[0] != NULL) |
675 | { |
3c4b62a4 |
676 | drawStereoPair (aFrameBuffer); |
c357e426 |
677 | } |
678 | } |
679 | else |
680 | { |
681 | OpenGl_FrameBuffer* aMainFbo = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL; |
682 | OpenGl_FrameBuffer* anImmFbo = aFrameBuffer; |
a1073ae2 |
683 | OpenGl_FrameBuffer* anImmFboOit = NULL; |
684 | if (myImmediateSceneFbos[0]->IsValid()) |
c357e426 |
685 | { |
a1073ae2 |
686 | anImmFbo = myImmediateSceneFbos[0].operator->(); |
687 | anImmFboOit = myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL; |
c357e426 |
688 | } |
689 | #if !defined(GL_ES_VERSION_2_0) |
690 | if (aMainFbo == NULL) |
691 | { |
692 | aCtx->SetReadDrawBuffer (GL_BACK); |
693 | } |
694 | #endif |
56689b27 |
695 | aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), |
696 | anImmFbo != aFrameBuffer ? myRenderParams.RenderResolutionScale : 1.0f); |
c357e426 |
697 | toSwap = redrawImmediate (aProjectType, |
698 | aMainFbo, |
699 | anImmFbo, |
a1073ae2 |
700 | anImmFboOit, |
c357e426 |
701 | Standard_True) || toSwap; |
702 | if (anImmFbo != NULL |
703 | && anImmFbo != aFrameBuffer) |
704 | { |
705 | blitBuffers (anImmFbo, aFrameBuffer, myToFlipOutput); |
706 | } |
707 | } |
708 | |
709 | // bind default FBO |
710 | bindDefaultFbo(); |
711 | |
8613985b |
712 | // reset state for safety |
713 | aCtx->BindProgram (Handle(OpenGl_ShaderProgram)()); |
714 | aCtx->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)()); |
715 | |
c357e426 |
716 | if (toSwap && !aCtx->caps->buffersNoSwap) |
717 | { |
718 | aCtx->SwapBuffers(); |
719 | } |
720 | else |
721 | { |
722 | aCtx->core11fwd->glFlush(); |
723 | } |
724 | |
725 | myWasRedrawnGL = Standard_True; |
726 | } |
727 | |
728 | // ======================================================================= |
729 | // function : redraw |
730 | // purpose : |
731 | // ======================================================================= |
a1073ae2 |
732 | void OpenGl_View::redraw (const Graphic3d_Camera::Projection theProjection, |
733 | OpenGl_FrameBuffer* theReadDrawFbo, |
734 | OpenGl_FrameBuffer* theOitAccumFbo) |
c357e426 |
735 | { |
736 | Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext(); |
737 | if (theReadDrawFbo != NULL) |
738 | { |
739 | theReadDrawFbo->BindBuffer (aCtx); |
740 | theReadDrawFbo->SetupViewport (aCtx); |
741 | } |
742 | else |
743 | { |
3bffef55 |
744 | const Standard_Integer aViewport[4] = { 0, 0, myWindow->Width(), myWindow->Height() }; |
745 | aCtx->ResizeViewport (aViewport); |
c357e426 |
746 | } |
747 | |
748 | // request reset of material |
8613985b |
749 | aCtx->ShaderManager()->UpdateMaterialState(); |
750 | |
c357e426 |
751 | myWorkspace->UseZBuffer() = Standard_True; |
752 | myWorkspace->UseDepthWrite() = Standard_True; |
753 | GLbitfield toClear = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT; |
754 | glDepthFunc (GL_LEQUAL); |
755 | glDepthMask (GL_TRUE); |
756 | glEnable (GL_DEPTH_TEST); |
757 | |
758 | #if !defined(GL_ES_VERSION_2_0) |
759 | glClearDepth (1.0); |
760 | #else |
761 | glClearDepthf (1.0f); |
762 | #endif |
763 | |
8613985b |
764 | const OpenGl_Vec4& aBgColor = myBgColor; |
765 | glClearColor (aBgColor.r(), aBgColor.g(), aBgColor.b(), 0.0f); |
c357e426 |
766 | |
767 | glClear (toClear); |
768 | |
a1073ae2 |
769 | render (theProjection, theReadDrawFbo, theOitAccumFbo, Standard_False); |
c357e426 |
770 | } |
771 | |
772 | // ======================================================================= |
773 | // function : redrawMonoImmediate |
774 | // purpose : |
775 | // ======================================================================= |
776 | bool OpenGl_View::redrawImmediate (const Graphic3d_Camera::Projection theProjection, |
a1073ae2 |
777 | OpenGl_FrameBuffer* theReadFbo, |
778 | OpenGl_FrameBuffer* theDrawFbo, |
779 | OpenGl_FrameBuffer* theOitAccumFbo, |
780 | const Standard_Boolean theIsPartialUpdate) |
c357e426 |
781 | { |
782 | Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext(); |
783 | GLboolean toCopyBackToFront = GL_FALSE; |
521b0d7f |
784 | if (theDrawFbo == theReadFbo |
785 | && theDrawFbo != NULL) |
c357e426 |
786 | { |
787 | myBackBufferRestored = Standard_False; |
788 | } |
789 | else if (theReadFbo != NULL |
790 | && theReadFbo->IsValid() |
791 | && aCtx->IsRender()) |
792 | { |
793 | if (!blitBuffers (theReadFbo, theDrawFbo)) |
794 | { |
795 | return true; |
796 | } |
797 | } |
798 | else if (theDrawFbo == NULL) |
799 | { |
800 | #if !defined(GL_ES_VERSION_2_0) |
801 | aCtx->core11fwd->glGetBooleanv (GL_DOUBLEBUFFER, &toCopyBackToFront); |
802 | #endif |
6cde53c4 |
803 | if (toCopyBackToFront |
804 | && myTransientDrawToFront) |
c357e426 |
805 | { |
806 | if (!HasImmediateStructures() |
807 | && !theIsPartialUpdate) |
808 | { |
809 | // prefer Swap Buffers within Redraw in compatibility mode (without FBO) |
810 | return true; |
811 | } |
a0b49de4 |
812 | if (!copyBackToFront()) |
813 | { |
814 | toCopyBackToFront = GL_FALSE; |
815 | myBackBufferRestored = Standard_False; |
816 | } |
c357e426 |
817 | } |
818 | else |
819 | { |
820 | myBackBufferRestored = Standard_False; |
821 | } |
822 | } |
823 | else |
824 | { |
825 | myBackBufferRestored = Standard_False; |
826 | } |
827 | myIsImmediateDrawn = Standard_True; |
828 | |
829 | myWorkspace->UseZBuffer() = Standard_True; |
830 | myWorkspace->UseDepthWrite() = Standard_True; |
831 | glDepthFunc (GL_LEQUAL); |
832 | glDepthMask (GL_TRUE); |
833 | glEnable (GL_DEPTH_TEST); |
834 | #if !defined(GL_ES_VERSION_2_0) |
835 | glClearDepth (1.0); |
836 | #else |
837 | glClearDepthf (1.0f); |
838 | #endif |
839 | |
a1073ae2 |
840 | render (theProjection, theDrawFbo, theOitAccumFbo, Standard_True); |
c357e426 |
841 | |
842 | return !toCopyBackToFront; |
843 | } |
844 | |
845 | //======================================================================= |
846 | //function : Render |
847 | //purpose : |
848 | //======================================================================= |
849 | void OpenGl_View::render (Graphic3d_Camera::Projection theProjection, |
850 | OpenGl_FrameBuffer* theOutputFBO, |
a1073ae2 |
851 | OpenGl_FrameBuffer* theOitAccumFbo, |
c357e426 |
852 | const Standard_Boolean theToDrawImmediate) |
853 | { |
854 | // ================================== |
855 | // Step 1: Prepare for render |
856 | // ================================== |
857 | |
858 | const Handle(OpenGl_Context)& aContext = myWorkspace->GetGlContext(); |
859 | |
860 | #if !defined(GL_ES_VERSION_2_0) |
861 | // Disable current clipping planes |
862 | if (aContext->core11 != NULL) |
863 | { |
864 | const Standard_Integer aMaxPlanes = aContext->MaxClipPlanes(); |
865 | for (Standard_Integer aClipPlaneId = GL_CLIP_PLANE0; aClipPlaneId < GL_CLIP_PLANE0 + aMaxPlanes; ++aClipPlaneId) |
866 | { |
867 | aContext->core11fwd->glDisable (aClipPlaneId); |
868 | } |
869 | } |
870 | #endif |
871 | |
872 | // Update states of OpenGl_BVHTreeSelector (frustum culling algorithm). |
873 | myBVHSelector.SetViewVolume (myCamera); |
91d96372 |
874 | myBVHSelector.SetViewportSize (myWindow->Width(), myWindow->Height()); |
c357e426 |
875 | |
876 | const Handle(OpenGl_ShaderManager)& aManager = aContext->ShaderManager(); |
877 | if (StateInfo (myCurrLightSourceState, aManager->LightSourceState().Index()) != myLastLightSourceState) |
878 | { |
016e5959 |
879 | aManager->UpdateLightSourceStateTo (myShadingModel == Graphic3d_TOSM_NONE ? &myNoShadingLight : &myLights); |
c357e426 |
880 | myLastLightSourceState = StateInfo (myCurrLightSourceState, aManager->LightSourceState().Index()); |
881 | } |
882 | |
883 | // Update matrices if camera has changed. |
884 | Graphic3d_WorldViewProjState aWVPState = myCamera->WorldViewProjState(); |
7c3ef2f7 |
885 | if (myWorldViewProjState != aWVPState) |
c357e426 |
886 | { |
bf02aa7d |
887 | myAccumFrames = 0; |
7c3ef2f7 |
888 | myWorldViewProjState = aWVPState; |
c357e426 |
889 | } |
890 | |
7c3ef2f7 |
891 | myLocalOrigin.SetCoord (0.0, 0.0, 0.0); |
892 | aContext->ProjectionState.SetCurrent (myCamera->ProjectionMatrixF()); |
893 | aContext->WorldViewState .SetCurrent (myCamera->OrientationMatrixF()); |
894 | aContext->ApplyProjectionMatrix(); |
895 | aContext->ApplyWorldViewMatrix(); |
c357e426 |
896 | if (aManager->ModelWorldState().Index() == 0) |
897 | { |
898 | aContext->ShaderManager()->UpdateModelWorldStateTo (OpenGl_Mat4()); |
899 | } |
900 | |
c357e426 |
901 | // ==================================== |
902 | // Step 2: Redraw background |
903 | // ==================================== |
904 | |
905 | // Render background |
906 | if (!theToDrawImmediate) |
907 | { |
a521d90d |
908 | drawBackground (myWorkspace); |
c357e426 |
909 | } |
910 | |
911 | #if !defined(GL_ES_VERSION_2_0) |
912 | // Switch off lighting by default |
913 | if (aContext->core11 != NULL) |
914 | { |
915 | glDisable(GL_LIGHTING); |
916 | } |
917 | #endif |
918 | |
919 | // ================================= |
920 | // Step 3: Redraw main plane |
921 | // ================================= |
922 | |
923 | // Setup face culling |
924 | GLboolean isCullFace = GL_FALSE; |
925 | if (myBackfacing != Graphic3d_TOBM_AUTOMATIC) |
926 | { |
927 | isCullFace = glIsEnabled (GL_CULL_FACE); |
928 | if (myBackfacing == Graphic3d_TOBM_DISABLE) |
929 | { |
930 | glEnable (GL_CULL_FACE); |
931 | glCullFace (GL_BACK); |
932 | } |
933 | else |
934 | glDisable (GL_CULL_FACE); |
935 | } |
936 | |
937 | #if !defined(GL_ES_VERSION_2_0) |
938 | // if the view is scaled normal vectors are scaled to unit |
939 | // length for correct displaying of shaded objects |
940 | const gp_Pnt anAxialScale = myCamera->AxialScale(); |
941 | if (anAxialScale.X() != 1.F || |
942 | anAxialScale.Y() != 1.F || |
943 | anAxialScale.Z() != 1.F) |
944 | { |
945 | aContext->SetGlNormalizeEnabled (Standard_True); |
946 | } |
947 | else |
948 | { |
949 | aContext->SetGlNormalizeEnabled (Standard_False); |
950 | } |
951 | |
c357e426 |
952 | // Apply InteriorShadingMethod |
953 | if (aContext->core11 != NULL) |
954 | { |
955 | aContext->core11->glShadeModel (myShadingModel == Graphic3d_TOSM_FACET |
956 | || myShadingModel == Graphic3d_TOSM_NONE ? GL_FLAT : GL_SMOOTH); |
957 | } |
958 | #endif |
959 | |
960 | aManager->SetShadingModel (myShadingModel); |
c357e426 |
961 | |
962 | // Redraw 3d scene |
963 | if (theProjection == Graphic3d_Camera::Projection_MonoLeftEye) |
964 | { |
965 | aContext->ProjectionState.SetCurrent (myCamera->ProjectionStereoLeftF()); |
966 | aContext->ApplyProjectionMatrix(); |
967 | } |
968 | else if (theProjection == Graphic3d_Camera::Projection_MonoRightEye) |
969 | { |
970 | aContext->ProjectionState.SetCurrent (myCamera->ProjectionStereoRightF()); |
971 | aContext->ApplyProjectionMatrix(); |
972 | } |
83da37b1 |
973 | |
974 | myWorkspace->SetEnvironmentTexture (myTextureEnv); |
975 | |
a1073ae2 |
976 | renderScene (theProjection, theOutputFBO, theOitAccumFbo, theToDrawImmediate); |
c357e426 |
977 | |
cc8cbabe |
978 | myWorkspace->SetEnvironmentTexture (Handle(OpenGl_TextureSet)()); |
83da37b1 |
979 | |
c357e426 |
980 | // =============================== |
981 | // Step 4: Trihedron |
982 | // =============================== |
983 | |
984 | // Resetting GL parameters according to the default aspects |
985 | // in order to synchronize GL state with the graphic driver state |
986 | // before drawing auxiliary stuff (trihedrons, overlayer) |
c357e426 |
987 | myWorkspace->ResetAppliedAspect(); |
988 | |
c357e426 |
989 | // Render trihedron |
990 | if (!theToDrawImmediate) |
991 | { |
992 | renderTrihedron (myWorkspace); |
993 | |
994 | // Restore face culling |
995 | if (myBackfacing != Graphic3d_TOBM_AUTOMATIC) |
996 | { |
997 | if (isCullFace) |
998 | { |
999 | glEnable (GL_CULL_FACE); |
1000 | glCullFace (GL_BACK); |
1001 | } |
1002 | else |
1003 | glDisable (GL_CULL_FACE); |
1004 | } |
1005 | } |
1006 | |
8613985b |
1007 | // reset FFP state for safety |
1008 | aContext->BindProgram (Handle(OpenGl_ShaderProgram)()); |
1009 | aContext->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)()); |
1010 | |
c357e426 |
1011 | // ============================================================== |
1012 | // Step 6: Keep shader manager informed about last View |
1013 | // ============================================================== |
1014 | |
1015 | if (!aManager.IsNull()) |
1016 | { |
1017 | aManager->SetLastView (this); |
1018 | } |
1019 | } |
1020 | |
1021 | // ======================================================================= |
1022 | // function : InvalidateBVHData |
1023 | // purpose : |
1024 | // ======================================================================= |
1025 | void OpenGl_View::InvalidateBVHData (const Graphic3d_ZLayerId theLayerId) |
1026 | { |
1027 | myZLayers.InvalidateBVHData (theLayerId); |
1028 | } |
1029 | |
1030 | //======================================================================= |
1031 | //function : renderStructs |
1032 | //purpose : |
1033 | //======================================================================= |
bf02aa7d |
1034 | void OpenGl_View::renderStructs (Graphic3d_Camera::Projection theProjection, |
1035 | OpenGl_FrameBuffer* theReadDrawFbo, |
a1073ae2 |
1036 | OpenGl_FrameBuffer* theOitAccumFbo, |
bf02aa7d |
1037 | const Standard_Boolean theToDrawImmediate) |
c357e426 |
1038 | { |
1039 | if ( myZLayers.NbStructures() <= 0 ) |
1040 | return; |
1041 | |
1042 | Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext(); |
c357e426 |
1043 | Standard_Boolean toRenderGL = theToDrawImmediate || |
1044 | myRenderParams.Method != Graphic3d_RM_RAYTRACING || |
1045 | myRaytraceInitStatus == OpenGl_RT_FAIL || |
1046 | aCtx->IsFeedback(); |
1047 | |
1048 | if (!toRenderGL) |
1049 | { |
1050 | toRenderGL = !initRaytraceResources (aCtx) || |
1051 | !updateRaytraceGeometry (OpenGl_GUM_CHECK, myId, aCtx); |
1052 | |
1053 | toRenderGL |= !myIsRaytraceDataValid; // if no ray-trace data use OpenGL |
1054 | |
1055 | if (!toRenderGL) |
1056 | { |
1057 | const Standard_Integer aSizeX = theReadDrawFbo != NULL ? theReadDrawFbo->GetVPSizeX() : myWindow->Width(); |
1058 | const Standard_Integer aSizeY = theReadDrawFbo != NULL ? theReadDrawFbo->GetVPSizeY() : myWindow->Height(); |
3c4b62a4 |
1059 | myOpenGlFBO ->InitLazy (aCtx, aSizeX, aSizeY, myFboColorFormat, myFboDepthFormat, 0); |
c357e426 |
1060 | |
1061 | if (myRaytraceFilter.IsNull()) |
1062 | myRaytraceFilter = new OpenGl_RaytraceFilter; |
1063 | |
1064 | myRaytraceFilter->SetPrevRenderFilter (myWorkspace->GetRenderFilter()); |
1065 | |
1066 | if (theReadDrawFbo != NULL) |
1067 | theReadDrawFbo->UnbindBuffer (aCtx); |
1068 | |
1069 | // Prepare preliminary OpenGL output |
1070 | if (aCtx->arbFBOBlit != NULL) |
1071 | { |
1072 | // Render bottom OSD layer |
a1073ae2 |
1073 | myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_Bottom, theReadDrawFbo, theOitAccumFbo); |
c357e426 |
1074 | |
1075 | myWorkspace->SetRenderFilter (myRaytraceFilter); |
1076 | { |
1077 | if (theReadDrawFbo != NULL) |
1078 | { |
3a9b5dc8 |
1079 | theReadDrawFbo->BindDrawBuffer (aCtx); |
c357e426 |
1080 | } |
1081 | else |
1082 | { |
3a9b5dc8 |
1083 | aCtx->arbFBO->glBindFramebuffer (GL_DRAW_FRAMEBUFFER, 0); |
c357e426 |
1084 | } |
1085 | |
c357e426 |
1086 | // Render non-polygonal elements in default layer |
a1073ae2 |
1087 | myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_Default, theReadDrawFbo, theOitAccumFbo); |
c357e426 |
1088 | } |
1089 | myWorkspace->SetRenderFilter (myRaytraceFilter->PrevRenderFilter()); |
1090 | } |
1091 | |
1092 | if (theReadDrawFbo != NULL) |
1093 | { |
1094 | theReadDrawFbo->BindBuffer (aCtx); |
1095 | } |
1096 | else |
1097 | { |
1098 | aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, 0); |
1099 | } |
1100 | |
f55ba97f |
1101 | // Reset OpenGl aspects state to default to avoid enabling of |
1102 | // backface culling which is not supported in ray-tracing. |
1103 | myWorkspace->ResetAppliedAspect(); |
1104 | |
c357e426 |
1105 | // Ray-tracing polygonal primitive arrays |
bf02aa7d |
1106 | raytrace (aSizeX, aSizeY, theProjection, theReadDrawFbo, aCtx); |
c357e426 |
1107 | |
1108 | // Render upper (top and topmost) OpenGL layers |
a1073ae2 |
1109 | myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_Upper, theReadDrawFbo, theOitAccumFbo); |
c357e426 |
1110 | } |
1111 | } |
1112 | |
1113 | // Redraw 3D scene using OpenGL in standard |
1114 | // mode or in case of ray-tracing failure |
1115 | if (toRenderGL) |
1116 | { |
a1073ae2 |
1117 | myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_All, theReadDrawFbo, theOitAccumFbo); |
c357e426 |
1118 | |
1119 | // Set flag that scene was redrawn by standard pipeline |
1120 | myWasRedrawnGL = Standard_True; |
1121 | } |
1122 | } |
1123 | |
1124 | //======================================================================= |
1125 | //function : renderTrihedron |
1126 | //purpose : |
1127 | //======================================================================= |
1128 | void OpenGl_View::renderTrihedron (const Handle(OpenGl_Workspace) &theWorkspace) |
1129 | { |
c357e426 |
1130 | if (myToShowGradTrihedron) |
1131 | { |
1132 | myGraduatedTrihedron.Render (theWorkspace); |
1133 | } |
1134 | } |
1135 | |
1136 | // ======================================================================= |
1137 | // function : Invalidate |
1138 | // purpose : |
1139 | // ======================================================================= |
1140 | void OpenGl_View::Invalidate() |
1141 | { |
1142 | myBackBufferRestored = Standard_False; |
1143 | } |
1144 | |
1145 | //======================================================================= |
1146 | //function : renderScene |
1147 | //purpose : |
1148 | //======================================================================= |
bf02aa7d |
1149 | void OpenGl_View::renderScene (Graphic3d_Camera::Projection theProjection, |
1150 | OpenGl_FrameBuffer* theReadDrawFbo, |
a1073ae2 |
1151 | OpenGl_FrameBuffer* theOitAccumFbo, |
bf02aa7d |
1152 | const Standard_Boolean theToDrawImmediate) |
c357e426 |
1153 | { |
1154 | const Handle(OpenGl_Context)& aContext = myWorkspace->GetGlContext(); |
1155 | |
c357e426 |
1156 | // Specify clipping planes in view transformation space |
3202bf1e |
1157 | aContext->ChangeClipping().Reset (aContext, myClipPlanes); |
1158 | if (!myClipPlanes.IsNull() |
1159 | && !myClipPlanes->IsEmpty()) |
c357e426 |
1160 | { |
deb02f86 |
1161 | aContext->ShaderManager()->UpdateClippingState(); |
c357e426 |
1162 | } |
1163 | |
a1073ae2 |
1164 | renderStructs (theProjection, theReadDrawFbo, theOitAccumFbo, theToDrawImmediate); |
cc8cbabe |
1165 | aContext->BindTextures (Handle(OpenGl_TextureSet)()); |
c357e426 |
1166 | |
c357e426 |
1167 | // Apply restored view matrix. |
1168 | aContext->ApplyWorldViewMatrix(); |
1169 | |
3202bf1e |
1170 | aContext->ChangeClipping().Reset (aContext, Handle(Graphic3d_SequenceOfHClipPlane)()); |
1171 | if (!myClipPlanes.IsNull() |
1172 | && !myClipPlanes->IsEmpty()) |
deb02f86 |
1173 | { |
1174 | aContext->ShaderManager()->RevertClippingState(); |
deb02f86 |
1175 | } |
c357e426 |
1176 | } |
1177 | |
1178 | // ======================================================================= |
1179 | // function : bindDefaultFbo |
1180 | // purpose : |
1181 | // ======================================================================= |
1182 | void OpenGl_View::bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo) |
1183 | { |
1184 | Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext(); |
1185 | OpenGl_FrameBuffer* anFbo = (theCustomFbo != NULL && theCustomFbo->IsValid()) |
1186 | ? theCustomFbo |
1187 | : (!aCtx->DefaultFrameBuffer().IsNull() |
1188 | && aCtx->DefaultFrameBuffer()->IsValid() |
1189 | ? aCtx->DefaultFrameBuffer().operator->() |
1190 | : NULL); |
1191 | if (anFbo != NULL) |
1192 | { |
1193 | anFbo->BindBuffer (aCtx); |
521b0d7f |
1194 | anFbo->SetupViewport (aCtx); |
c357e426 |
1195 | } |
1196 | else |
1197 | { |
1198 | #if !defined(GL_ES_VERSION_2_0) |
1199 | aCtx->SetReadDrawBuffer (GL_BACK); |
1200 | #else |
1201 | if (aCtx->arbFBO != NULL) |
1202 | { |
1203 | aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER); |
1204 | } |
1205 | #endif |
3bffef55 |
1206 | const Standard_Integer aViewport[4] = { 0, 0, myWindow->Width(), myWindow->Height() }; |
1207 | aCtx->ResizeViewport (aViewport); |
c357e426 |
1208 | } |
c357e426 |
1209 | } |
1210 | |
1211 | // ======================================================================= |
1212 | // function : initBlitQuad |
1213 | // purpose : |
1214 | // ======================================================================= |
1215 | OpenGl_VertexBuffer* OpenGl_View::initBlitQuad (const Standard_Boolean theToFlip) |
1216 | { |
1217 | OpenGl_VertexBuffer* aVerts = NULL; |
1218 | if (!theToFlip) |
1219 | { |
1220 | aVerts = &myFullScreenQuad; |
1221 | if (!aVerts->IsValid()) |
1222 | { |
1223 | OpenGl_Vec4 aQuad[4] = |
1224 | { |
1225 | OpenGl_Vec4( 1.0f, -1.0f, 1.0f, 0.0f), |
1226 | OpenGl_Vec4( 1.0f, 1.0f, 1.0f, 1.0f), |
1227 | OpenGl_Vec4(-1.0f, -1.0f, 0.0f, 0.0f), |
1228 | OpenGl_Vec4(-1.0f, 1.0f, 0.0f, 1.0f) |
1229 | }; |
1230 | aVerts->Init (myWorkspace->GetGlContext(), 4, 4, aQuad[0].GetData()); |
1231 | } |
1232 | } |
1233 | else |
1234 | { |
1235 | aVerts = &myFullScreenQuadFlip; |
1236 | if (!aVerts->IsValid()) |
1237 | { |
1238 | OpenGl_Vec4 aQuad[4] = |
1239 | { |
1240 | OpenGl_Vec4( 1.0f, -1.0f, 1.0f, 1.0f), |
1241 | OpenGl_Vec4( 1.0f, 1.0f, 1.0f, 0.0f), |
1242 | OpenGl_Vec4(-1.0f, -1.0f, 0.0f, 1.0f), |
1243 | OpenGl_Vec4(-1.0f, 1.0f, 0.0f, 0.0f) |
1244 | }; |
1245 | aVerts->Init (myWorkspace->GetGlContext(), 4, 4, aQuad[0].GetData()); |
1246 | } |
1247 | } |
1248 | return aVerts; |
1249 | } |
1250 | |
1251 | // ======================================================================= |
1252 | // function : blitBuffers |
1253 | // purpose : |
1254 | // ======================================================================= |
1255 | bool OpenGl_View::blitBuffers (OpenGl_FrameBuffer* theReadFbo, |
1256 | OpenGl_FrameBuffer* theDrawFbo, |
1257 | const Standard_Boolean theToFlip) |
1258 | { |
1259 | Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext(); |
56689b27 |
1260 | const Standard_Integer aReadSizeX = theReadFbo != NULL ? theReadFbo->GetVPSizeX() : myWindow->Width(); |
1261 | const Standard_Integer aReadSizeY = theReadFbo != NULL ? theReadFbo->GetVPSizeY() : myWindow->Height(); |
1262 | const Standard_Integer aDrawSizeX = theDrawFbo != NULL ? theDrawFbo->GetVPSizeX() : myWindow->Width(); |
1263 | const Standard_Integer aDrawSizeY = theDrawFbo != NULL ? theDrawFbo->GetVPSizeY() : myWindow->Height(); |
c357e426 |
1264 | if (theReadFbo == NULL || aCtx->IsFeedback()) |
1265 | { |
1266 | return false; |
1267 | } |
1268 | else if (theReadFbo == theDrawFbo) |
1269 | { |
1270 | return true; |
1271 | } |
1272 | |
1273 | // clear destination before blitting |
1274 | if (theDrawFbo != NULL |
1275 | && theDrawFbo->IsValid()) |
1276 | { |
1277 | theDrawFbo->BindBuffer (aCtx); |
1278 | } |
1279 | else |
1280 | { |
1281 | aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER); |
1282 | } |
56689b27 |
1283 | const Standard_Integer aViewport[4] = { 0, 0, aDrawSizeX, aDrawSizeY }; |
1284 | aCtx->ResizeViewport (aViewport); |
1285 | |
c357e426 |
1286 | #if !defined(GL_ES_VERSION_2_0) |
1287 | aCtx->core20fwd->glClearDepth (1.0); |
1288 | #else |
1289 | aCtx->core20fwd->glClearDepthf (1.0f); |
1290 | #endif |
1291 | aCtx->core20fwd->glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); |
1292 | |
3c4b62a4 |
1293 | if (aCtx->arbFBOBlit != NULL |
1294 | && theReadFbo->NbSamples() != 0) |
c357e426 |
1295 | { |
3c4b62a4 |
1296 | GLbitfield aCopyMask = 0; |
c357e426 |
1297 | theReadFbo->BindReadBuffer (aCtx); |
1298 | if (theDrawFbo != NULL |
1299 | && theDrawFbo->IsValid()) |
1300 | { |
1301 | theDrawFbo->BindDrawBuffer (aCtx); |
3c4b62a4 |
1302 | if (theDrawFbo->HasColor() |
1303 | && theReadFbo->HasColor()) |
1304 | { |
1305 | aCopyMask |= GL_COLOR_BUFFER_BIT; |
1306 | } |
1307 | if (theDrawFbo->HasDepth() |
1308 | && theReadFbo->HasDepth()) |
1309 | { |
1310 | aCopyMask |= GL_DEPTH_BUFFER_BIT; |
1311 | } |
c357e426 |
1312 | } |
1313 | else |
1314 | { |
3c4b62a4 |
1315 | if (theReadFbo->HasColor()) |
1316 | { |
1317 | aCopyMask |= GL_COLOR_BUFFER_BIT; |
1318 | } |
1319 | if (theReadFbo->HasDepth()) |
1320 | { |
1321 | aCopyMask |= GL_DEPTH_BUFFER_BIT; |
1322 | } |
c357e426 |
1323 | aCtx->arbFBO->glBindFramebuffer (GL_DRAW_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER); |
1324 | } |
3c4b62a4 |
1325 | |
c357e426 |
1326 | // we don't copy stencil buffer here... does it matter for performance? |
56689b27 |
1327 | aCtx->arbFBOBlit->glBlitFramebuffer (0, 0, aReadSizeX, aReadSizeY, |
1328 | 0, 0, aDrawSizeX, aDrawSizeY, |
3c4b62a4 |
1329 | aCopyMask, GL_NEAREST); |
7ccf8676 |
1330 | const int anErr = ::glGetError(); |
1331 | if (anErr != GL_NO_ERROR) |
1332 | { |
1333 | // glBlitFramebuffer() might fail in several cases: |
1334 | // - Both FBOs have MSAA and they are samples number does not match. |
1335 | // OCCT checks that this does not happen, |
1336 | // however some graphics drivers provide an option for overriding MSAA. |
1337 | // In this case window MSAA might be non-zero (and application can not check it) |
1338 | // and might not match MSAA of our offscreen FBOs. |
1339 | // - Pixel formats of FBOs do not match. |
1340 | // This also might happen with window has pixel format, |
1341 | // e.g. Mesa fails blitting RGBA8 -> RGB8 while other drivers support this conversion. |
1342 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "FBO blitting has failed [Error #" + anErr + "]\n" |
1343 | + " Please check your graphics driver settings or try updating driver."; |
1344 | if (theReadFbo->NbSamples() != 0) |
1345 | { |
1346 | myToDisableMSAA = true; |
1347 | aMsg += "\n MSAA settings should not be overridden by driver!"; |
1348 | } |
1349 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1350 | GL_DEBUG_TYPE_ERROR, |
1351 | 0, |
1352 | GL_DEBUG_SEVERITY_HIGH, |
1353 | aMsg); |
1354 | } |
1355 | |
c357e426 |
1356 | if (theDrawFbo != NULL |
3c4b62a4 |
1357 | && theDrawFbo->IsValid()) |
c357e426 |
1358 | { |
1359 | theDrawFbo->BindBuffer (aCtx); |
1360 | } |
1361 | else |
1362 | { |
1363 | aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER); |
1364 | } |
1365 | } |
1366 | else |
c357e426 |
1367 | { |
1368 | aCtx->core20fwd->glDepthFunc (GL_ALWAYS); |
1369 | aCtx->core20fwd->glDepthMask (GL_TRUE); |
1370 | aCtx->core20fwd->glEnable (GL_DEPTH_TEST); |
1ce0716b |
1371 | #if defined(GL_ES_VERSION_2_0) |
1372 | if (!aCtx->IsGlGreaterEqual (3, 0) |
1373 | && !aCtx->extFragDepth) |
1374 | { |
1375 | aCtx->core20fwd->glDisable (GL_DEPTH_TEST); |
1376 | } |
1377 | #endif |
c357e426 |
1378 | |
cc8cbabe |
1379 | aCtx->BindTextures (Handle(OpenGl_TextureSet)()); |
c357e426 |
1380 | |
56689b27 |
1381 | const Graphic3d_TypeOfTextureFilter aFilter = (aDrawSizeX == aReadSizeX && aDrawSizeY == aReadSizeY) ? Graphic3d_TOTF_NEAREST : Graphic3d_TOTF_BILINEAR; |
1382 | const GLint aFilterGl = aFilter == Graphic3d_TOTF_NEAREST ? GL_NEAREST : GL_LINEAR; |
1383 | |
c357e426 |
1384 | OpenGl_VertexBuffer* aVerts = initBlitQuad (theToFlip); |
1385 | const Handle(OpenGl_ShaderManager)& aManager = aCtx->ShaderManager(); |
1386 | if (aVerts->IsValid() |
1387 | && aManager->BindFboBlitProgram()) |
1388 | { |
cc8cbabe |
1389 | theReadFbo->ColorTexture()->Bind (aCtx, Graphic3d_TextureUnit_0); |
1390 | if (theReadFbo->ColorTexture()->Sampler()->Parameters()->Filter() != aFilter) |
56689b27 |
1391 | { |
cc8cbabe |
1392 | theReadFbo->ColorTexture()->Sampler()->Parameters()->SetFilter (aFilter); |
56689b27 |
1393 | aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterGl); |
1394 | aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilterGl); |
1395 | } |
1396 | |
cc8cbabe |
1397 | theReadFbo->DepthStencilTexture()->Bind (aCtx, Graphic3d_TextureUnit_1); |
1398 | if (theReadFbo->DepthStencilTexture()->Sampler()->Parameters()->Filter() != aFilter) |
56689b27 |
1399 | { |
cc8cbabe |
1400 | theReadFbo->DepthStencilTexture()->Sampler()->Parameters()->SetFilter (aFilter); |
56689b27 |
1401 | aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterGl); |
1402 | aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilterGl); |
1403 | } |
1404 | |
c357e426 |
1405 | aVerts->BindVertexAttrib (aCtx, Graphic3d_TOA_POS); |
1406 | |
1407 | aCtx->core20fwd->glDrawArrays (GL_TRIANGLE_STRIP, 0, 4); |
1408 | |
1409 | aVerts->UnbindVertexAttrib (aCtx, Graphic3d_TOA_POS); |
cc8cbabe |
1410 | theReadFbo->DepthStencilTexture()->Unbind (aCtx, Graphic3d_TextureUnit_1); |
1411 | theReadFbo->ColorTexture() ->Unbind (aCtx, Graphic3d_TextureUnit_0); |
a521d90d |
1412 | aCtx->BindProgram (NULL); |
c357e426 |
1413 | } |
1414 | else |
1415 | { |
1416 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() |
1417 | + "Error! FBO blitting has failed"; |
3b523c4c |
1418 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1419 | GL_DEBUG_TYPE_ERROR, |
c357e426 |
1420 | 0, |
3b523c4c |
1421 | GL_DEBUG_SEVERITY_HIGH, |
c357e426 |
1422 | aMsg); |
1423 | myHasFboBlit = Standard_False; |
1424 | theReadFbo->Release (aCtx.operator->()); |
1425 | return true; |
1426 | } |
1427 | } |
1428 | return true; |
1429 | } |
1430 | |
1431 | // ======================================================================= |
1432 | // function : drawStereoPair |
1433 | // purpose : |
1434 | // ======================================================================= |
3c4b62a4 |
1435 | void OpenGl_View::drawStereoPair (OpenGl_FrameBuffer* theDrawFbo) |
c357e426 |
1436 | { |
3c4b62a4 |
1437 | const Handle(OpenGl_Context)& aCtx = myWorkspace->GetGlContext(); |
1438 | bindDefaultFbo (theDrawFbo); |
c357e426 |
1439 | OpenGl_FrameBuffer* aPair[2] = |
1440 | { |
1441 | myImmediateSceneFbos[0]->IsValid() ? myImmediateSceneFbos[0].operator->() : NULL, |
1442 | myImmediateSceneFbos[1]->IsValid() ? myImmediateSceneFbos[1].operator->() : NULL |
1443 | }; |
1444 | if (aPair[0] == NULL |
1445 | || aPair[1] == NULL |
1446 | || !myTransientDrawToFront) |
1447 | { |
1448 | aPair[0] = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL; |
1449 | aPair[1] = myMainSceneFbos[1]->IsValid() ? myMainSceneFbos[1].operator->() : NULL; |
1450 | } |
1451 | |
1452 | if (aPair[0] == NULL |
1453 | || aPair[1] == NULL) |
1454 | { |
1455 | return; |
1456 | } |
1457 | |
3c4b62a4 |
1458 | if (aPair[0]->NbSamples() != 0) |
1459 | { |
1460 | // resolve MSAA buffers before drawing |
1461 | if (!myOpenGlFBO ->InitLazy (aCtx, aPair[0]->GetVPSizeX(), aPair[0]->GetVPSizeY(), myFboColorFormat, myFboDepthFormat, 0) |
1462 | || !myOpenGlFBO2->InitLazy (aCtx, aPair[0]->GetVPSizeX(), aPair[0]->GetVPSizeY(), myFboColorFormat, 0, 0)) |
1463 | { |
82f443b6 |
1464 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1465 | GL_DEBUG_TYPE_ERROR, |
3c4b62a4 |
1466 | 0, |
82f443b6 |
1467 | GL_DEBUG_SEVERITY_HIGH, |
3c4b62a4 |
1468 | "Error! Unable to allocate FBO for blitting stereo pair"); |
1469 | bindDefaultFbo (theDrawFbo); |
1470 | return; |
1471 | } |
1472 | |
1473 | if (!blitBuffers (aPair[0], myOpenGlFBO .operator->(), Standard_False) |
1474 | || !blitBuffers (aPair[1], myOpenGlFBO2.operator->(), Standard_False)) |
1475 | { |
1476 | bindDefaultFbo (theDrawFbo); |
1477 | return; |
1478 | } |
1479 | |
1480 | aPair[0] = myOpenGlFBO .operator->(); |
1481 | aPair[1] = myOpenGlFBO2.operator->(); |
1482 | bindDefaultFbo (theDrawFbo); |
1483 | } |
1484 | |
c357e426 |
1485 | struct |
1486 | { |
1487 | Standard_Integer left; |
1488 | Standard_Integer top; |
1489 | Standard_Integer right; |
1490 | Standard_Integer bottom; |
1491 | Standard_Integer dx() { return right - left; } |
1492 | Standard_Integer dy() { return bottom - top; } |
1493 | } aGeom; |
1494 | |
1495 | myWindow->PlatformWindow()->Position (aGeom.left, aGeom.top, aGeom.right, aGeom.bottom); |
1496 | |
1497 | Standard_Boolean toReverse = myRenderParams.ToReverseStereo; |
1498 | const Standard_Boolean isOddY = (aGeom.top + aGeom.dy()) % 2 == 1; |
1499 | const Standard_Boolean isOddX = aGeom.left % 2 == 1; |
1500 | if (isOddY |
1501 | && (myRenderParams.StereoMode == Graphic3d_StereoMode_RowInterlaced |
1502 | || myRenderParams.StereoMode == Graphic3d_StereoMode_ChessBoard)) |
1503 | { |
1504 | toReverse = !toReverse; |
1505 | } |
1506 | if (isOddX |
1507 | && (myRenderParams.StereoMode == Graphic3d_StereoMode_ColumnInterlaced |
1508 | || myRenderParams.StereoMode == Graphic3d_StereoMode_ChessBoard)) |
1509 | { |
1510 | toReverse = !toReverse; |
1511 | } |
1512 | |
1513 | if (toReverse) |
1514 | { |
1515 | std::swap (aPair[0], aPair[1]); |
1516 | } |
1517 | |
c357e426 |
1518 | aCtx->core20fwd->glDepthFunc (GL_ALWAYS); |
1519 | aCtx->core20fwd->glDepthMask (GL_TRUE); |
1520 | aCtx->core20fwd->glEnable (GL_DEPTH_TEST); |
1521 | |
cc8cbabe |
1522 | aCtx->BindTextures (Handle(OpenGl_TextureSet)()); |
c357e426 |
1523 | OpenGl_VertexBuffer* aVerts = initBlitQuad (myToFlipOutput); |
1524 | |
1525 | const Handle(OpenGl_ShaderManager)& aManager = aCtx->ShaderManager(); |
1526 | if (aVerts->IsValid() |
1527 | && aManager->BindStereoProgram (myRenderParams.StereoMode)) |
1528 | { |
1529 | if (myRenderParams.StereoMode == Graphic3d_StereoMode_Anaglyph) |
1530 | { |
1531 | OpenGl_Mat4 aFilterL, aFilterR; |
1532 | aFilterL.SetDiagonal (Graphic3d_Vec4 (0.0f, 0.0f, 0.0f, 0.0f)); |
1533 | aFilterR.SetDiagonal (Graphic3d_Vec4 (0.0f, 0.0f, 0.0f, 0.0f)); |
1534 | switch (myRenderParams.AnaglyphFilter) |
1535 | { |
1536 | case Graphic3d_RenderingParams::Anaglyph_RedCyan_Simple: |
1537 | { |
1538 | aFilterL.SetRow (0, Graphic3d_Vec4 (1.0f, 0.0f, 0.0f, 0.0f)); |
1539 | aFilterR.SetRow (1, Graphic3d_Vec4 (0.0f, 1.0f, 0.0f, 0.0f)); |
1540 | aFilterR.SetRow (2, Graphic3d_Vec4 (0.0f, 0.0f, 1.0f, 0.0f)); |
1541 | break; |
1542 | } |
1543 | case Graphic3d_RenderingParams::Anaglyph_RedCyan_Optimized: |
1544 | { |
1545 | aFilterL.SetRow (0, Graphic3d_Vec4 ( 0.4154f, 0.4710f, 0.16666667f, 0.0f)); |
1546 | aFilterL.SetRow (1, Graphic3d_Vec4 (-0.0458f, -0.0484f, -0.0257f, 0.0f)); |
1547 | aFilterL.SetRow (2, Graphic3d_Vec4 (-0.0547f, -0.0615f, 0.0128f, 0.0f)); |
1548 | aFilterL.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f)); |
1549 | aFilterR.SetRow (0, Graphic3d_Vec4 (-0.01090909f, -0.03636364f, -0.00606061f, 0.0f)); |
1550 | aFilterR.SetRow (1, Graphic3d_Vec4 ( 0.37560000f, 0.73333333f, 0.01111111f, 0.0f)); |
1551 | aFilterR.SetRow (2, Graphic3d_Vec4 (-0.06510000f, -0.12870000f, 1.29710000f, 0.0f)); |
1552 | aFilterR.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f)); |
1553 | break; |
1554 | } |
1555 | case Graphic3d_RenderingParams::Anaglyph_YellowBlue_Simple: |
1556 | { |
1557 | aFilterL.SetRow (0, Graphic3d_Vec4 (1.0f, 0.0f, 0.0f, 0.0f)); |
1558 | aFilterL.SetRow (1, Graphic3d_Vec4 (0.0f, 1.0f, 0.0f, 0.0f)); |
1559 | aFilterR.SetRow (2, Graphic3d_Vec4 (0.0f, 0.0f, 1.0f, 0.0f)); |
1560 | break; |
1561 | } |
1562 | case Graphic3d_RenderingParams::Anaglyph_YellowBlue_Optimized: |
1563 | { |
1564 | aFilterL.SetRow (0, Graphic3d_Vec4 ( 1.062f, -0.205f, 0.299f, 0.0f)); |
1565 | aFilterL.SetRow (1, Graphic3d_Vec4 (-0.026f, 0.908f, 0.068f, 0.0f)); |
1566 | aFilterL.SetRow (2, Graphic3d_Vec4 (-0.038f, -0.173f, 0.022f, 0.0f)); |
1567 | aFilterL.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f)); |
1568 | aFilterR.SetRow (0, Graphic3d_Vec4 (-0.016f, -0.123f, -0.017f, 0.0f)); |
1569 | aFilterR.SetRow (1, Graphic3d_Vec4 ( 0.006f, 0.062f, -0.017f, 0.0f)); |
1570 | aFilterR.SetRow (2, Graphic3d_Vec4 ( 0.094f, 0.185f, 0.911f, 0.0f)); |
1571 | aFilterR.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f)); |
1572 | break; |
1573 | } |
1574 | case Graphic3d_RenderingParams::Anaglyph_GreenMagenta_Simple: |
1575 | { |
1576 | aFilterR.SetRow (0, Graphic3d_Vec4 (1.0f, 0.0f, 0.0f, 0.0f)); |
1577 | aFilterL.SetRow (1, Graphic3d_Vec4 (0.0f, 1.0f, 0.0f, 0.0f)); |
1578 | aFilterR.SetRow (2, Graphic3d_Vec4 (0.0f, 0.0f, 1.0f, 0.0f)); |
1579 | break; |
1580 | } |
1581 | case Graphic3d_RenderingParams::Anaglyph_UserDefined: |
1582 | { |
1583 | aFilterL = myRenderParams.AnaglyphLeft; |
1584 | aFilterR = myRenderParams.AnaglyphRight; |
1585 | break; |
1586 | } |
1587 | } |
1588 | aCtx->ActiveProgram()->SetUniform (aCtx, "uMultL", aFilterL); |
1589 | aCtx->ActiveProgram()->SetUniform (aCtx, "uMultR", aFilterR); |
1590 | } |
1591 | |
cc8cbabe |
1592 | aPair[0]->ColorTexture()->Bind (aCtx, Graphic3d_TextureUnit_0); |
1593 | aPair[1]->ColorTexture()->Bind (aCtx, Graphic3d_TextureUnit_1); |
c357e426 |
1594 | aVerts->BindVertexAttrib (aCtx, 0); |
1595 | |
1596 | aCtx->core20fwd->glDrawArrays (GL_TRIANGLE_STRIP, 0, 4); |
1597 | |
1598 | aVerts->UnbindVertexAttrib (aCtx, 0); |
cc8cbabe |
1599 | aPair[1]->ColorTexture()->Unbind (aCtx, Graphic3d_TextureUnit_1); |
1600 | aPair[0]->ColorTexture()->Unbind (aCtx, Graphic3d_TextureUnit_0); |
c357e426 |
1601 | } |
1602 | else |
1603 | { |
1604 | TCollection_ExtendedString aMsg = TCollection_ExtendedString() |
1605 | + "Error! Anaglyph has failed"; |
3b523c4c |
1606 | aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1607 | GL_DEBUG_TYPE_ERROR, |
c357e426 |
1608 | 0, |
3b523c4c |
1609 | GL_DEBUG_SEVERITY_HIGH, |
c357e426 |
1610 | aMsg); |
1611 | } |
1612 | } |
1613 | |
1614 | // ======================================================================= |
1615 | // function : copyBackToFront |
1616 | // purpose : |
1617 | // ======================================================================= |
a0b49de4 |
1618 | bool OpenGl_View::copyBackToFront() |
c357e426 |
1619 | { |
a0b49de4 |
1620 | myIsImmediateDrawn = Standard_False; |
c357e426 |
1621 | #if !defined(GL_ES_VERSION_2_0) |
a0b49de4 |
1622 | const Handle(OpenGl_Context)& aCtx = myWorkspace->GetGlContext(); |
1623 | if (aCtx->core11 == NULL) |
1624 | { |
1625 | return false; |
1626 | } |
c357e426 |
1627 | |
1628 | OpenGl_Mat4 aProjectMat; |
1629 | Graphic3d_TransformUtils::Ortho2D (aProjectMat, |
8613985b |
1630 | 0.0f, static_cast<GLfloat> (myWindow->Width()), |
1631 | 0.0f, static_cast<GLfloat> (myWindow->Height())); |
1632 | |
c357e426 |
1633 | aCtx->WorldViewState.Push(); |
1634 | aCtx->ProjectionState.Push(); |
1635 | |
1636 | aCtx->WorldViewState.SetIdentity(); |
1637 | aCtx->ProjectionState.SetCurrent (aProjectMat); |
1638 | |
1639 | aCtx->ApplyProjectionMatrix(); |
1640 | aCtx->ApplyWorldViewMatrix(); |
1641 | |
8613985b |
1642 | // synchronize FFP state before copying pixels |
1643 | aCtx->BindProgram (Handle(OpenGl_ShaderProgram)()); |
1644 | aCtx->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)()); |
c357e426 |
1645 | aCtx->DisableFeatures(); |
1646 | |
1647 | switch (aCtx->DrawBuffer()) |
1648 | { |
1649 | case GL_BACK_LEFT: |
1650 | { |
1651 | aCtx->SetReadBuffer (GL_BACK_LEFT); |
1652 | aCtx->SetDrawBuffer (GL_FRONT_LEFT); |
1653 | break; |
1654 | } |
1655 | case GL_BACK_RIGHT: |
1656 | { |
1657 | aCtx->SetReadBuffer (GL_BACK_RIGHT); |
1658 | aCtx->SetDrawBuffer (GL_FRONT_RIGHT); |
1659 | break; |
1660 | } |
1661 | default: |
1662 | { |
1663 | aCtx->SetReadBuffer (GL_BACK); |
1664 | aCtx->SetDrawBuffer (GL_FRONT); |
1665 | break; |
1666 | } |
1667 | } |
1668 | |
a0b49de4 |
1669 | aCtx->core11->glRasterPos2i (0, 0); |
1670 | aCtx->core11->glCopyPixels (0, 0, myWindow->Width() + 1, myWindow->Height() + 1, GL_COLOR); |
1671 | //aCtx->core11->glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_DEPTH); |
c357e426 |
1672 | |
1673 | aCtx->EnableFeatures(); |
1674 | |
1675 | aCtx->WorldViewState.Pop(); |
1676 | aCtx->ProjectionState.Pop(); |
1677 | aCtx->ApplyProjectionMatrix(); |
1678 | |
1679 | // read/write from front buffer now |
1680 | aCtx->SetReadBuffer (aCtx->DrawBuffer()); |
a0b49de4 |
1681 | return true; |
1682 | #else |
1683 | return false; |
c357e426 |
1684 | #endif |
c357e426 |
1685 | } |
a1073ae2 |
1686 | |
1687 | // ======================================================================= |
1688 | // function : checkOitCompatibility |
1689 | // purpose : |
1690 | // ======================================================================= |
1691 | Standard_Boolean OpenGl_View::checkOitCompatibility (const Handle(OpenGl_Context)& theGlContext, |
1692 | const Standard_Boolean theMSAA) |
1693 | { |
1694 | // determine if OIT is supported by current OpenGl context |
1695 | Standard_Boolean& aToDisableOIT = theMSAA ? myToDisableMSAA : myToDisableOIT; |
1696 | if (aToDisableOIT) |
1697 | { |
1698 | return Standard_False; |
1699 | } |
1700 | |
1701 | TCollection_ExtendedString aCompatibilityMsg; |
177781da |
1702 | if (theGlContext->hasFloatBuffer == OpenGl_FeatureNotAvailable |
1703 | && theGlContext->hasHalfFloatBuffer == OpenGl_FeatureNotAvailable) |
a1073ae2 |
1704 | { |
1705 | aCompatibilityMsg += "OpenGL context does not support floating-point RGBA color buffer format.\n"; |
1706 | } |
177781da |
1707 | if (theMSAA && theGlContext->hasSampleVariables == OpenGl_FeatureNotAvailable) |
a1073ae2 |
1708 | { |
1709 | aCompatibilityMsg += "Current version of GLSL does not support built-in sample variables.\n"; |
1710 | } |
177781da |
1711 | if (theGlContext->hasDrawBuffers == OpenGl_FeatureNotAvailable) |
a1073ae2 |
1712 | { |
1713 | aCompatibilityMsg += "OpenGL context does not support multiple draw buffers.\n"; |
1714 | } |
1715 | if (aCompatibilityMsg.IsEmpty()) |
1716 | { |
1717 | return Standard_True; |
1718 | } |
1719 | |
1720 | aCompatibilityMsg += " Blended order-independent transparency will not be available.\n"; |
1721 | theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION, |
1722 | GL_DEBUG_TYPE_ERROR, |
1723 | 0, |
1724 | GL_DEBUG_SEVERITY_HIGH, |
1725 | aCompatibilityMsg); |
1726 | |
1727 | aToDisableOIT = Standard_True; |
1728 | return Standard_False; |
1729 | } |
1730 | |
1731 | // ======================================================================= |
1732 | // function : chooseOitColorConfiguration |
1733 | // purpose : |
1734 | // ======================================================================= |
1735 | bool OpenGl_View::chooseOitColorConfiguration (const Handle(OpenGl_Context)& theGlContext, |
1736 | const Standard_Integer theConfigIndex, |
1737 | OpenGl_ColorFormats& theFormats) |
1738 | { |
1739 | theFormats.Clear(); |
1740 | switch (theConfigIndex) |
1741 | { |
1742 | case 0: // choose best applicable color format combination |
1743 | { |
177781da |
1744 | theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_RGBA16F : GL_RGBA32F); |
1745 | theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_R16F : GL_R32F); |
a1073ae2 |
1746 | return true; |
1747 | } |
1748 | case 1: // choose non-optimal applicable color format combination |
1749 | { |
177781da |
1750 | theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_RGBA16F : GL_RGBA32F); |
1751 | theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_RGBA16F : GL_RGBA32F); |
a1073ae2 |
1752 | return true; |
1753 | } |
1754 | } |
1755 | return false; // color combination does not exist |
1756 | } |