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08669adf1b
OpenGl_ShaderManager::PushState() now sets GL_SHADE_MODEL within FFP. OpenGl_Context::SetShadeModel(), added property holding cached GL_SHADE_MODEL state.
1947 lines
69 KiB
C++
1947 lines
69 KiB
C++
// Created on: 2011-09-20
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// Created by: Sergey ZERCHANINOV
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// Copyright (c) 2011-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <stdio.h>
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#include <stdlib.h>
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#include <OpenGl_GlCore11.hxx>
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#include <Graphic3d_GraphicDriver.hxx>
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#include <Graphic3d_StructureManager.hxx>
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#include <Graphic3d_TextureParams.hxx>
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#include <Graphic3d_Texture2Dmanual.hxx>
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#include <Graphic3d_TransformUtils.hxx>
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#include <Image_AlienPixMap.hxx>
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#include <NCollection_Mat4.hxx>
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#include <OpenGl_Context.hxx>
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#include <OpenGl_FrameStats.hxx>
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#include <OpenGl_Matrix.hxx>
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#include <OpenGl_Workspace.hxx>
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#include <OpenGl_View.hxx>
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#include <OpenGl_GraduatedTrihedron.hxx>
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#include <OpenGl_PrimitiveArray.hxx>
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#include <OpenGl_ShaderManager.hxx>
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#include <OpenGl_ShaderProgram.hxx>
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#include <OpenGl_Structure.hxx>
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#include <OpenGl_ArbFBO.hxx>
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#include "../Textures/Textures_EnvLUT.pxx"
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namespace
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{
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//! Format Frame Buffer format for logging messages.
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static TCollection_AsciiString printFboFormat (const Handle(OpenGl_FrameBuffer)& theFbo)
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{
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return TCollection_AsciiString() + theFbo->GetInitVPSizeX() + "x" + theFbo->GetInitVPSizeY() + "@" + theFbo->NbSamples();
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}
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//! Return TRUE if Frame Buffer initialized has failed with the same parameters.
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static bool checkWasFailedFbo (const Handle(OpenGl_FrameBuffer)& theFboToCheck,
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Standard_Integer theSizeX,
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Standard_Integer theSizeY,
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Standard_Integer theNbSamples)
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{
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return !theFboToCheck->IsValid()
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&& theFboToCheck->GetInitVPSizeX() == theSizeX
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&& theFboToCheck->GetInitVPSizeY() == theSizeY
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&& theFboToCheck->NbSamples() == theNbSamples;
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}
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//! Return TRUE if Frame Buffer initialized has failed with the same parameters.
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static bool checkWasFailedFbo (const Handle(OpenGl_FrameBuffer)& theFboToCheck,
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const Handle(OpenGl_FrameBuffer)& theFboRef)
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{
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return checkWasFailedFbo (theFboToCheck, theFboRef->GetVPSizeX(), theFboRef->GetVPSizeY(), theFboRef->NbSamples());
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}
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}
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//=======================================================================
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//function : drawBackground
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//purpose :
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//=======================================================================
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void OpenGl_View::drawBackground (const Handle(OpenGl_Workspace)& theWorkspace)
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{
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const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext();
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const Standard_Boolean wasUsedZBuffer = theWorkspace->SetUseZBuffer (Standard_False);
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if (wasUsedZBuffer)
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{
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aCtx->core11fwd->glDisable (GL_DEPTH_TEST);
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}
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if (myBackgroundType == Graphic3d_TOB_CUBEMAP)
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{
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Graphic3d_Camera aCamera (theWorkspace->View()->Camera());
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aCamera.SetZRange (0.01, 1.0); // is needed to avoid perspective camera exception
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aCamera.SetProjectionType (Graphic3d_Camera::Projection_Perspective);
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aCtx->ProjectionState.Push();
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aCtx->ProjectionState.SetCurrent (aCamera.ProjectionMatrixF());
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myCubeMapParams->Aspect()->ShaderProgram()->PushVariableInt ("uZCoeff", myBackgroundCubeMap->ZIsInverted() ? -1 : 1);
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myCubeMapParams->Aspect()->ShaderProgram()->PushVariableInt ("uYCoeff", myBackgroundCubeMap->IsTopDown() ? 1 : -1);
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const OpenGl_Aspects* anOldAspectFace = theWorkspace->SetAspects (myCubeMapParams);
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myBackgrounds[Graphic3d_TOB_CUBEMAP]->Render (theWorkspace);
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aCtx->ProjectionState.Pop();
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aCtx->ApplyProjectionMatrix();
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theWorkspace->SetAspects (anOldAspectFace);
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}
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else if (myBackgroundType == Graphic3d_TOB_GRADIENT
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|| myBackgroundType == Graphic3d_TOB_TEXTURE)
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{
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// Drawing background gradient if:
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// - gradient fill type is not Aspect_GFM_NONE and
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// - either background texture is no specified or it is drawn in Aspect_FM_CENTERED mode
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if (myBackgrounds[Graphic3d_TOB_GRADIENT]->IsDefined()
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&& (!myTextureParams->Aspect()->ToMapTexture()
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|| myBackgrounds[Graphic3d_TOB_TEXTURE]->TextureFillMethod() == Aspect_FM_CENTERED
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|| myBackgrounds[Graphic3d_TOB_TEXTURE]->TextureFillMethod() == Aspect_FM_NONE))
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{
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myBackgrounds[Graphic3d_TOB_GRADIENT]->Render(theWorkspace);
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}
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// Drawing background image if it is defined
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// (texture is defined and fill type is not Aspect_FM_NONE)
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if (myBackgrounds[Graphic3d_TOB_TEXTURE]->IsDefined()
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&& myTextureParams->Aspect()->ToMapTexture())
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{
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aCtx->core11fwd->glDisable (GL_BLEND);
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const OpenGl_Aspects* anOldAspectFace = theWorkspace->SetAspects (myTextureParams);
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myBackgrounds[Graphic3d_TOB_TEXTURE]->Render (theWorkspace);
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theWorkspace->SetAspects (anOldAspectFace);
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}
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}
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if (wasUsedZBuffer)
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{
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theWorkspace->SetUseZBuffer (Standard_True);
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aCtx->core11fwd->glEnable (GL_DEPTH_TEST);
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}
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}
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//=======================================================================
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//function : Redraw
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//purpose :
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//=======================================================================
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void OpenGl_View::Redraw()
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{
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const Standard_Boolean wasDisabledMSAA = myToDisableMSAA;
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const Standard_Boolean hadFboBlit = myHasFboBlit;
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if (myRenderParams.Method == Graphic3d_RM_RAYTRACING
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&& !myCaps->vboDisable
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&& !myCaps->keepArrayData)
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{
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// caps are shared across all views, thus we need to invalidate all of them
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// if (myWasRedrawnGL) { myStructureManager->SetDeviceLost(); }
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myDriver->setDeviceLost();
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myCaps->keepArrayData = Standard_True;
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}
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if (!myWorkspace->Activate())
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{
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return;
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}
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myWindow->SetSwapInterval();
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++myFrameCounter;
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const Graphic3d_StereoMode aStereoMode = myRenderParams.StereoMode;
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Graphic3d_Camera::Projection aProjectType = myCamera->ProjectionType();
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const Handle(OpenGl_Context)& aCtx = myWorkspace->GetGlContext();
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aCtx->FrameStats()->FrameStart (myWorkspace->View(), false);
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aCtx->SetLineFeather (myRenderParams.LineFeather);
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const Standard_Integer anSRgbState = aCtx->ToRenderSRGB() ? 1 : 0;
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if (mySRgbState != -1
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&& mySRgbState != anSRgbState)
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{
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releaseSrgbResources (aCtx);
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initTextureEnv (aCtx);
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}
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mySRgbState = anSRgbState;
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aCtx->ShaderManager()->UpdateSRgbState();
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// release pending GL resources
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aCtx->ReleaseDelayed();
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// fetch OpenGl context state
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aCtx->FetchState();
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OpenGl_FrameBuffer* aFrameBuffer = myFBO.get();
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bool toSwap = aCtx->IsRender()
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&& !aCtx->caps->buffersNoSwap
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&& aFrameBuffer == NULL;
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const Standard_Integer aSizeX = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeX() : myWindow->Width();
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const Standard_Integer aSizeY = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeY() : myWindow->Height();
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const Standard_Integer aRendSizeX = Standard_Integer(myRenderParams.RenderResolutionScale * aSizeX + 0.5f);
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const Standard_Integer aRendSizeY = Standard_Integer(myRenderParams.RenderResolutionScale * aSizeY + 0.5f);
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if (aSizeX < 1
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|| aSizeY < 1
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|| aRendSizeX < 1
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|| aRendSizeY < 1)
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{
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myBackBufferRestored = Standard_False;
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myIsImmediateDrawn = Standard_False;
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return;
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}
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// determine multisampling parameters
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Standard_Integer aNbSamples = !myToDisableMSAA && aSizeX == aRendSizeX
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? Max (Min (myRenderParams.NbMsaaSamples, aCtx->MaxMsaaSamples()), 0)
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: 0;
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if (aNbSamples != 0)
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{
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aNbSamples = OpenGl_Context::GetPowerOfTwo (aNbSamples, aCtx->MaxMsaaSamples());
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}
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bool toUseOit = myRenderParams.TransparencyMethod == Graphic3d_RTM_BLEND_OIT
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&& checkOitCompatibility (aCtx, aNbSamples > 0);
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const bool toInitImmediateFbo = myTransientDrawToFront
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&& (!aCtx->caps->useSystemBuffer || (toUseOit && HasImmediateStructures()));
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if ( aFrameBuffer == NULL
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&& !aCtx->DefaultFrameBuffer().IsNull()
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&& aCtx->DefaultFrameBuffer()->IsValid())
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{
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aFrameBuffer = aCtx->DefaultFrameBuffer().operator->();
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}
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if (myHasFboBlit
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&& (myTransientDrawToFront
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|| aProjectType == Graphic3d_Camera::Projection_Stereo
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|| aNbSamples != 0
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|| toUseOit
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|| aSizeX != aRendSizeX))
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{
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if (myMainSceneFbos[0]->GetVPSizeX() != aRendSizeX
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|| myMainSceneFbos[0]->GetVPSizeY() != aRendSizeY
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|| myMainSceneFbos[0]->NbSamples() != aNbSamples)
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{
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if (!myTransientDrawToFront)
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{
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myImmediateSceneFbos[0]->Release (aCtx.operator->());
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myImmediateSceneFbos[1]->Release (aCtx.operator->());
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myImmediateSceneFbos[0]->ChangeViewport (0, 0);
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myImmediateSceneFbos[1]->ChangeViewport (0, 0);
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}
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// prepare FBOs containing main scene
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// for further blitting and rendering immediate presentations on top
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if (aCtx->core20fwd != NULL)
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{
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const bool wasFailedMain0 = checkWasFailedFbo (myMainSceneFbos[0], aRendSizeX, aRendSizeY, aNbSamples);
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if (!myMainSceneFbos[0]->Init (aCtx, aRendSizeX, aRendSizeY, myFboColorFormat, myFboDepthFormat, aNbSamples)
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&& !wasFailedMain0)
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{
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TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Main FBO "
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+ printFboFormat (myMainSceneFbos[0]) + " initialization has failed";
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aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
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}
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}
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}
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if (myMainSceneFbos[0]->IsValid() && (toInitImmediateFbo || myImmediateSceneFbos[0]->IsValid()))
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{
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const bool wasFailedImm0 = checkWasFailedFbo (myImmediateSceneFbos[0], myMainSceneFbos[0]);
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if (!myImmediateSceneFbos[0]->InitLazy (aCtx, *myMainSceneFbos[0])
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&& !wasFailedImm0)
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{
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TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Immediate FBO "
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+ printFboFormat (myImmediateSceneFbos[0]) + " initialization has failed";
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aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
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}
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}
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}
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else
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{
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myMainSceneFbos [0]->Release (aCtx.operator->());
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myMainSceneFbos [1]->Release (aCtx.operator->());
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myImmediateSceneFbos[0]->Release (aCtx.operator->());
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myImmediateSceneFbos[1]->Release (aCtx.operator->());
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myMainSceneFbos [0]->ChangeViewport (0, 0);
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myMainSceneFbos [1]->ChangeViewport (0, 0);
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myImmediateSceneFbos[0]->ChangeViewport (0, 0);
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myImmediateSceneFbos[1]->ChangeViewport (0, 0);
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}
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if (aProjectType == Graphic3d_Camera::Projection_Stereo
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&& myMainSceneFbos[0]->IsValid())
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{
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const bool wasFailedMain1 = checkWasFailedFbo (myMainSceneFbos[1], myMainSceneFbos[0]);
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if (!myMainSceneFbos[1]->InitLazy (aCtx, *myMainSceneFbos[0])
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&& !wasFailedMain1)
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{
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TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Main FBO (second) "
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+ printFboFormat (myMainSceneFbos[1]) + " initialization has failed";
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aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
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}
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if (!myMainSceneFbos[1]->IsValid())
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{
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// no enough memory?
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aProjectType = Graphic3d_Camera::Projection_Perspective;
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}
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else if (!myTransientDrawToFront)
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{
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//
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}
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else if (!aCtx->HasStereoBuffers() || aStereoMode != Graphic3d_StereoMode_QuadBuffer)
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{
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const bool wasFailedImm0 = checkWasFailedFbo (myImmediateSceneFbos[0], myMainSceneFbos[0]);
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const bool wasFailedImm1 = checkWasFailedFbo (myImmediateSceneFbos[1], myMainSceneFbos[0]);
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if (!myImmediateSceneFbos[0]->InitLazy (aCtx, *myMainSceneFbos[0])
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&& !wasFailedImm0)
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{
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TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Immediate FBO (first) "
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+ printFboFormat (myImmediateSceneFbos[0]) + " initialization has failed";
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aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
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}
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if (!myImmediateSceneFbos[1]->InitLazy (aCtx, *myMainSceneFbos[0])
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&& !wasFailedImm1)
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{
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TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "Error! Immediate FBO (first) "
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+ printFboFormat (myImmediateSceneFbos[1]) + " initialization has failed";
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aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
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}
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if (!myImmediateSceneFbos[0]->IsValid()
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|| !myImmediateSceneFbos[1]->IsValid())
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{
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aProjectType = Graphic3d_Camera::Projection_Perspective;
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}
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}
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}
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// process PBR environment
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if (myShadingModel == Graphic3d_TOSM_PBR
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|| myShadingModel == Graphic3d_TOSM_PBR_FACET)
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{
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if (!myPBREnvironment.IsNull()
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&& myPBREnvironment->SizesAreDifferent (myRenderParams.PbrEnvPow2Size,
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myRenderParams.PbrEnvSpecMapNbLevels))
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{
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myPBREnvironment->Release (aCtx.get());
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myPBREnvironment.Nullify();
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myPBREnvState = OpenGl_PBREnvState_NONEXISTENT;
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myPBREnvRequest = OpenGl_PBREnvRequest_BAKE;
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++myLightsRevision;
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}
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if (myPBREnvState == OpenGl_PBREnvState_NONEXISTENT
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&& aCtx->HasPBR())
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{
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myPBREnvironment = OpenGl_PBREnvironment::Create (aCtx, myRenderParams.PbrEnvPow2Size, myRenderParams.PbrEnvSpecMapNbLevels);
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myPBREnvState = myPBREnvironment.IsNull() ? OpenGl_PBREnvState_UNAVAILABLE : OpenGl_PBREnvState_CREATED;
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if (myPBREnvState == OpenGl_PBREnvState_CREATED)
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{
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Handle(OpenGl_Texture) anEnvLUT;
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static const TCollection_AsciiString THE_SHARED_ENV_LUT_KEY("EnvLUT");
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if (!aCtx->GetResource (THE_SHARED_ENV_LUT_KEY, anEnvLUT))
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{
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Handle(Graphic3d_TextureParams) aParams = new Graphic3d_TextureParams();
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aParams->SetFilter (Graphic3d_TOTF_BILINEAR);
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aParams->SetRepeat (Standard_False);
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aParams->SetTextureUnit (aCtx->PBREnvLUTTexUnit());
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anEnvLUT = new OpenGl_Texture(THE_SHARED_ENV_LUT_KEY, aParams);
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Handle(Image_PixMap) aPixMap = new Image_PixMap();
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aPixMap->InitWrapper (Image_Format_RGF, (Standard_Byte*)Textures_EnvLUT, Textures_EnvLUTSize, Textures_EnvLUTSize);
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OpenGl_TextureFormat aTexFormat = OpenGl_TextureFormat::FindFormat (aCtx, aPixMap->Format(), false);
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#if defined(GL_ES_VERSION_2_0)
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// GL_RG32F is not texture-filterable format on OpenGL ES without OES_texture_float_linear extension.
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// GL_RG16F is texture-filterable since OpenGL ES 3.0 and can be initialized from 32-bit floats.
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// Note that it is expected that GL_RG16F has enough precision for this table, so that it can be used also on desktop OpenGL.
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//if (!aCtx->hasTexFloatLinear)
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aTexFormat.SetInternalFormat (GL_RG16F);
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#endif
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if (!aTexFormat.IsValid()
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|| !anEnvLUT->Init (aCtx, aTexFormat, Graphic3d_Vec2i((Standard_Integer)Textures_EnvLUTSize), Graphic3d_TOT_2D, aPixMap.get()))
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{
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aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, "Failed allocation of LUT for PBR");
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anEnvLUT.Nullify();
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}
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aCtx->ShareResource (THE_SHARED_ENV_LUT_KEY, anEnvLUT);
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}
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if (!anEnvLUT.IsNull())
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{
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anEnvLUT->Bind (aCtx);
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}
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myWorkspace->ApplyAspects();
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}
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}
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processPBREnvRequest (aCtx);
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}
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// create color and coverage accumulation buffers required for OIT algorithm
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if (toUseOit)
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{
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Standard_Integer anFboIt = 0;
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for (; anFboIt < 2; ++anFboIt)
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{
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Handle(OpenGl_FrameBuffer)& aMainSceneFbo = myMainSceneFbos [anFboIt];
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Handle(OpenGl_FrameBuffer)& aMainSceneFboOit = myMainSceneFbosOit [anFboIt];
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Handle(OpenGl_FrameBuffer)& anImmediateSceneFbo = myImmediateSceneFbos [anFboIt];
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Handle(OpenGl_FrameBuffer)& anImmediateSceneFboOit = myImmediateSceneFbosOit[anFboIt];
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if (aMainSceneFbo->IsValid()
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&& (aMainSceneFboOit->GetVPSizeX() != aRendSizeX
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|| aMainSceneFboOit->GetVPSizeY() != aRendSizeY
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|| aMainSceneFboOit->NbSamples() != aNbSamples))
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{
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Standard_Integer aColorConfig = 0;
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for (;;) // seemly responding to driver limitation (GL_FRAMEBUFFER_UNSUPPORTED)
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{
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if (myFboOitColorConfig.IsEmpty())
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{
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if (!chooseOitColorConfiguration (aCtx, aColorConfig++, myFboOitColorConfig))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
if (aMainSceneFboOit->Init (aCtx, aRendSizeX, aRendSizeY, myFboOitColorConfig, aMainSceneFbo->DepthStencilTexture(), aNbSamples))
|
|
{
|
|
break;
|
|
}
|
|
myFboOitColorConfig.Clear();
|
|
}
|
|
if (!aMainSceneFboOit->IsValid())
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else if (!aMainSceneFbo->IsValid())
|
|
{
|
|
aMainSceneFboOit->Release (aCtx.operator->());
|
|
aMainSceneFboOit->ChangeViewport (0, 0);
|
|
}
|
|
|
|
if (anImmediateSceneFbo->IsValid()
|
|
&& (anImmediateSceneFboOit->GetVPSizeX() != aRendSizeX
|
|
|| anImmediateSceneFboOit->GetVPSizeY() != aRendSizeY
|
|
|| anImmediateSceneFboOit->NbSamples() != aNbSamples))
|
|
{
|
|
if (!anImmediateSceneFboOit->Init (aCtx, aRendSizeX, aRendSizeY, myFboOitColorConfig,
|
|
anImmediateSceneFbo->DepthStencilTexture(), aNbSamples))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else if (!anImmediateSceneFbo->IsValid())
|
|
{
|
|
anImmediateSceneFboOit->Release (aCtx.operator->());
|
|
anImmediateSceneFboOit->ChangeViewport (0, 0);
|
|
}
|
|
}
|
|
if (anFboIt == 0) // only the first OIT framebuffer is mandatory
|
|
{
|
|
aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
|
|
"Initialization of float texture framebuffer for use with\n"
|
|
" blended order-independent transparency rendering algorithm has failed.\n"
|
|
" Blended order-independent transparency will not be available.\n");
|
|
if (aNbSamples > 0)
|
|
{
|
|
myToDisableOITMSAA = Standard_True;
|
|
}
|
|
else
|
|
{
|
|
myToDisableOIT = Standard_True;
|
|
}
|
|
toUseOit = false;
|
|
}
|
|
}
|
|
if (!toUseOit && myMainSceneFbosOit[0]->IsValid())
|
|
{
|
|
myMainSceneFbosOit [0]->Release (aCtx.operator->());
|
|
myMainSceneFbosOit [1]->Release (aCtx.operator->());
|
|
myImmediateSceneFbosOit[0]->Release (aCtx.operator->());
|
|
myImmediateSceneFbosOit[1]->Release (aCtx.operator->());
|
|
myMainSceneFbosOit [0]->ChangeViewport (0, 0);
|
|
myMainSceneFbosOit [1]->ChangeViewport (0, 0);
|
|
myImmediateSceneFbosOit[0]->ChangeViewport (0, 0);
|
|
myImmediateSceneFbosOit[1]->ChangeViewport (0, 0);
|
|
}
|
|
|
|
if (aProjectType == Graphic3d_Camera::Projection_Stereo)
|
|
{
|
|
OpenGl_FrameBuffer* aMainFbos[2] =
|
|
{
|
|
myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL,
|
|
myMainSceneFbos[1]->IsValid() ? myMainSceneFbos[1].operator->() : NULL
|
|
};
|
|
OpenGl_FrameBuffer* aMainFbosOit[2] =
|
|
{
|
|
myMainSceneFbosOit[0]->IsValid() ? myMainSceneFbosOit[0].operator->() : NULL,
|
|
myMainSceneFbosOit[1]->IsValid() ? myMainSceneFbosOit[1].operator->() :
|
|
myMainSceneFbosOit[0]->IsValid() ? myMainSceneFbosOit[0].operator->() : NULL
|
|
};
|
|
|
|
OpenGl_FrameBuffer* anImmFbos[2] =
|
|
{
|
|
myImmediateSceneFbos[0]->IsValid() ? myImmediateSceneFbos[0].operator->() : NULL,
|
|
myImmediateSceneFbos[1]->IsValid() ? myImmediateSceneFbos[1].operator->() : NULL
|
|
};
|
|
OpenGl_FrameBuffer* anImmFbosOit[2] =
|
|
{
|
|
myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL,
|
|
myImmediateSceneFbosOit[1]->IsValid() ? myImmediateSceneFbosOit[1].operator->() :
|
|
myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL
|
|
};
|
|
|
|
if (!myTransientDrawToFront)
|
|
{
|
|
anImmFbos [0] = aMainFbos [0];
|
|
anImmFbos [1] = aMainFbos [1];
|
|
anImmFbosOit[0] = aMainFbosOit[0];
|
|
anImmFbosOit[1] = aMainFbosOit[1];
|
|
}
|
|
else if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip
|
|
|| aStereoMode == Graphic3d_StereoMode_QuadBuffer)
|
|
{
|
|
anImmFbos [0] = NULL;
|
|
anImmFbos [1] = NULL;
|
|
anImmFbosOit[0] = NULL;
|
|
anImmFbosOit[1] = NULL;
|
|
}
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_LEFT : GL_BACK);
|
|
#endif
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
aMainFbos[0] != NULL ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
|
|
redraw (Graphic3d_Camera::Projection_MonoLeftEye, aMainFbos[0], aMainFbosOit[0]);
|
|
myBackBufferRestored = Standard_True;
|
|
myIsImmediateDrawn = Standard_False;
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_LEFT : GL_BACK);
|
|
#endif
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
anImmFbos[0] != NULL ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
if (!redrawImmediate (Graphic3d_Camera::Projection_MonoLeftEye, aMainFbos[0], anImmFbos[0], anImmFbosOit[0]))
|
|
{
|
|
toSwap = false;
|
|
}
|
|
else if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip && toSwap)
|
|
{
|
|
aCtx->SwapBuffers();
|
|
}
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_RIGHT : GL_BACK);
|
|
#endif
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
aMainFbos[1] != NULL ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
|
|
redraw (Graphic3d_Camera::Projection_MonoRightEye, aMainFbos[1], aMainFbosOit[1]);
|
|
myBackBufferRestored = Standard_True;
|
|
myIsImmediateDrawn = Standard_False;
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
anImmFbos[1] != NULL ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
if (!redrawImmediate (Graphic3d_Camera::Projection_MonoRightEye, aMainFbos[1], anImmFbos[1], anImmFbosOit[1]))
|
|
{
|
|
toSwap = false;
|
|
}
|
|
|
|
if (anImmFbos[0] != NULL)
|
|
{
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(), 1.0f);
|
|
drawStereoPair (aFrameBuffer);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
OpenGl_FrameBuffer* aMainFbo = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : aFrameBuffer;
|
|
OpenGl_FrameBuffer* aMainFboOit = myMainSceneFbosOit[0]->IsValid() ? myMainSceneFbosOit[0].operator->() : NULL;
|
|
OpenGl_FrameBuffer* anImmFbo = aFrameBuffer;
|
|
OpenGl_FrameBuffer* anImmFboOit = NULL;
|
|
if (!myTransientDrawToFront)
|
|
{
|
|
anImmFbo = aMainFbo;
|
|
anImmFboOit = aMainFboOit;
|
|
}
|
|
else if (myImmediateSceneFbos[0]->IsValid())
|
|
{
|
|
anImmFbo = myImmediateSceneFbos[0].operator->();
|
|
anImmFboOit = myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL;
|
|
}
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
if (aMainFbo == NULL)
|
|
{
|
|
aCtx->SetReadDrawBuffer (GL_BACK);
|
|
}
|
|
#endif
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
aMainFbo != aFrameBuffer ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
|
|
redraw (aProjectType, aMainFbo, aMainFboOit);
|
|
myBackBufferRestored = Standard_True;
|
|
myIsImmediateDrawn = Standard_False;
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
anImmFbo != aFrameBuffer ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
if (!redrawImmediate (aProjectType, aMainFbo, anImmFbo, anImmFboOit))
|
|
{
|
|
toSwap = false;
|
|
}
|
|
|
|
if (anImmFbo != NULL
|
|
&& anImmFbo != aFrameBuffer)
|
|
{
|
|
blitBuffers (anImmFbo, aFrameBuffer, myToFlipOutput);
|
|
}
|
|
}
|
|
|
|
if (myRenderParams.Method == Graphic3d_RM_RAYTRACING
|
|
&& myRenderParams.IsGlobalIlluminationEnabled)
|
|
{
|
|
myAccumFrames++;
|
|
}
|
|
|
|
// bind default FBO
|
|
bindDefaultFbo();
|
|
|
|
if (wasDisabledMSAA != myToDisableMSAA
|
|
|| hadFboBlit != myHasFboBlit)
|
|
{
|
|
// retry on error
|
|
Redraw();
|
|
}
|
|
|
|
// reset state for safety
|
|
aCtx->BindProgram (Handle(OpenGl_ShaderProgram)());
|
|
if (aCtx->caps->ffpEnable)
|
|
{
|
|
aCtx->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)());
|
|
}
|
|
|
|
// Swap the buffers
|
|
if (toSwap)
|
|
{
|
|
aCtx->SwapBuffers();
|
|
if (!myMainSceneFbos[0]->IsValid())
|
|
{
|
|
myBackBufferRestored = Standard_False;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
aCtx->core11fwd->glFlush();
|
|
}
|
|
|
|
// reset render mode state
|
|
aCtx->FetchState();
|
|
aCtx->FrameStats()->FrameEnd (myWorkspace->View(), false);
|
|
|
|
myWasRedrawnGL = Standard_True;
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : RedrawImmediate
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::RedrawImmediate()
|
|
{
|
|
if (!myWorkspace->Activate())
|
|
return;
|
|
|
|
Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext();
|
|
if (!myTransientDrawToFront
|
|
|| !myBackBufferRestored
|
|
|| (aCtx->caps->buffersNoSwap && !myMainSceneFbos[0]->IsValid()))
|
|
{
|
|
Redraw();
|
|
return;
|
|
}
|
|
|
|
const Graphic3d_StereoMode aStereoMode = myRenderParams.StereoMode;
|
|
Graphic3d_Camera::Projection aProjectType = myCamera->ProjectionType();
|
|
OpenGl_FrameBuffer* aFrameBuffer = myFBO.get();
|
|
aCtx->FrameStats()->FrameStart (myWorkspace->View(), true);
|
|
|
|
if ( aFrameBuffer == NULL
|
|
&& !aCtx->DefaultFrameBuffer().IsNull()
|
|
&& aCtx->DefaultFrameBuffer()->IsValid())
|
|
{
|
|
aFrameBuffer = aCtx->DefaultFrameBuffer().operator->();
|
|
}
|
|
|
|
if (aProjectType == Graphic3d_Camera::Projection_Stereo)
|
|
{
|
|
if (myMainSceneFbos[0]->IsValid()
|
|
&& !myMainSceneFbos[1]->IsValid())
|
|
{
|
|
aProjectType = Graphic3d_Camera::Projection_Perspective;
|
|
}
|
|
}
|
|
|
|
bool toSwap = false;
|
|
if (aProjectType == Graphic3d_Camera::Projection_Stereo)
|
|
{
|
|
OpenGl_FrameBuffer* aMainFbos[2] =
|
|
{
|
|
myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL,
|
|
myMainSceneFbos[1]->IsValid() ? myMainSceneFbos[1].operator->() : NULL
|
|
};
|
|
OpenGl_FrameBuffer* anImmFbos[2] =
|
|
{
|
|
myImmediateSceneFbos[0]->IsValid() ? myImmediateSceneFbos[0].operator->() : NULL,
|
|
myImmediateSceneFbos[1]->IsValid() ? myImmediateSceneFbos[1].operator->() : NULL
|
|
};
|
|
OpenGl_FrameBuffer* anImmFbosOit[2] =
|
|
{
|
|
myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL,
|
|
myImmediateSceneFbosOit[1]->IsValid() ? myImmediateSceneFbosOit[1].operator->() :
|
|
myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL
|
|
};
|
|
if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip
|
|
|| aStereoMode == Graphic3d_StereoMode_QuadBuffer)
|
|
{
|
|
anImmFbos[0] = NULL;
|
|
anImmFbos[1] = NULL;
|
|
anImmFbosOit[0] = NULL;
|
|
anImmFbosOit[1] = NULL;
|
|
}
|
|
|
|
if (aCtx->arbFBO != NULL)
|
|
{
|
|
aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
|
|
}
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
if (anImmFbos[0] == NULL)
|
|
{
|
|
aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_LEFT : GL_BACK);
|
|
}
|
|
#endif
|
|
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
anImmFbos[0] != NULL ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
toSwap = redrawImmediate (Graphic3d_Camera::Projection_MonoLeftEye,
|
|
aMainFbos[0],
|
|
anImmFbos[0],
|
|
anImmFbosOit[0],
|
|
Standard_True) || toSwap;
|
|
if (aStereoMode == Graphic3d_StereoMode_SoftPageFlip
|
|
&& toSwap
|
|
&& !aCtx->caps->buffersNoSwap)
|
|
{
|
|
aCtx->SwapBuffers();
|
|
}
|
|
|
|
if (aCtx->arbFBO != NULL)
|
|
{
|
|
aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
|
|
}
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
if (anImmFbos[1] == NULL)
|
|
{
|
|
aCtx->SetReadDrawBuffer (aStereoMode == Graphic3d_StereoMode_QuadBuffer ? GL_BACK_RIGHT : GL_BACK);
|
|
}
|
|
#endif
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
anImmFbos[1] != NULL ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
toSwap = redrawImmediate (Graphic3d_Camera::Projection_MonoRightEye,
|
|
aMainFbos[1],
|
|
anImmFbos[1],
|
|
anImmFbosOit[1],
|
|
Standard_True) || toSwap;
|
|
if (anImmFbos[0] != NULL)
|
|
{
|
|
drawStereoPair (aFrameBuffer);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
OpenGl_FrameBuffer* aMainFbo = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL;
|
|
OpenGl_FrameBuffer* anImmFbo = aFrameBuffer;
|
|
OpenGl_FrameBuffer* anImmFboOit = NULL;
|
|
if (myImmediateSceneFbos[0]->IsValid())
|
|
{
|
|
anImmFbo = myImmediateSceneFbos[0].operator->();
|
|
anImmFboOit = myImmediateSceneFbosOit[0]->IsValid() ? myImmediateSceneFbosOit[0].operator->() : NULL;
|
|
}
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
if (aMainFbo == NULL)
|
|
{
|
|
aCtx->SetReadDrawBuffer (GL_BACK);
|
|
}
|
|
#endif
|
|
aCtx->SetResolution (myRenderParams.Resolution, myRenderParams.ResolutionRatio(),
|
|
anImmFbo != aFrameBuffer ? myRenderParams.RenderResolutionScale : 1.0f);
|
|
toSwap = redrawImmediate (aProjectType,
|
|
aMainFbo,
|
|
anImmFbo,
|
|
anImmFboOit,
|
|
Standard_True) || toSwap;
|
|
if (anImmFbo != NULL
|
|
&& anImmFbo != aFrameBuffer)
|
|
{
|
|
blitBuffers (anImmFbo, aFrameBuffer, myToFlipOutput);
|
|
}
|
|
}
|
|
|
|
// bind default FBO
|
|
bindDefaultFbo();
|
|
|
|
// reset state for safety
|
|
aCtx->BindProgram (Handle(OpenGl_ShaderProgram)());
|
|
if (aCtx->caps->ffpEnable)
|
|
{
|
|
aCtx->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)());
|
|
}
|
|
|
|
if (toSwap && !aCtx->caps->buffersNoSwap)
|
|
{
|
|
aCtx->SwapBuffers();
|
|
}
|
|
else
|
|
{
|
|
aCtx->core11fwd->glFlush();
|
|
}
|
|
aCtx->FrameStats()->FrameEnd (myWorkspace->View(), true);
|
|
|
|
myWasRedrawnGL = Standard_True;
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : redraw
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::redraw (const Graphic3d_Camera::Projection theProjection,
|
|
OpenGl_FrameBuffer* theReadDrawFbo,
|
|
OpenGl_FrameBuffer* theOitAccumFbo)
|
|
{
|
|
Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext();
|
|
if (theReadDrawFbo != NULL)
|
|
{
|
|
theReadDrawFbo->BindBuffer (aCtx);
|
|
theReadDrawFbo->SetupViewport (aCtx);
|
|
}
|
|
else
|
|
{
|
|
const Standard_Integer aViewport[4] = { 0, 0, myWindow->Width(), myWindow->Height() };
|
|
aCtx->ResizeViewport (aViewport);
|
|
}
|
|
|
|
// request reset of material
|
|
aCtx->ShaderManager()->UpdateMaterialState();
|
|
|
|
myWorkspace->UseZBuffer() = Standard_True;
|
|
myWorkspace->UseDepthWrite() = Standard_True;
|
|
GLbitfield toClear = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT;
|
|
glDepthFunc (GL_LEQUAL);
|
|
glDepthMask (GL_TRUE);
|
|
glEnable (GL_DEPTH_TEST);
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
glClearDepth (1.0);
|
|
#else
|
|
glClearDepthf (1.0f);
|
|
#endif
|
|
|
|
const OpenGl_Vec4 aBgColor = aCtx->Vec4FromQuantityColor (myBgColor);
|
|
glClearColor (aBgColor.r(), aBgColor.g(), aBgColor.b(), 0.0f);
|
|
|
|
glClear (toClear);
|
|
|
|
render (theProjection, theReadDrawFbo, theOitAccumFbo, Standard_False);
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : redrawMonoImmediate
|
|
// purpose :
|
|
// =======================================================================
|
|
bool OpenGl_View::redrawImmediate (const Graphic3d_Camera::Projection theProjection,
|
|
OpenGl_FrameBuffer* theReadFbo,
|
|
OpenGl_FrameBuffer* theDrawFbo,
|
|
OpenGl_FrameBuffer* theOitAccumFbo,
|
|
const Standard_Boolean theIsPartialUpdate)
|
|
{
|
|
const Handle(OpenGl_Context)& aCtx = myWorkspace->GetGlContext();
|
|
GLboolean toCopyBackToFront = GL_FALSE;
|
|
if (theDrawFbo == theReadFbo
|
|
&& theDrawFbo != NULL)
|
|
{
|
|
myBackBufferRestored = Standard_False;
|
|
}
|
|
else if (theReadFbo != NULL
|
|
&& theReadFbo->IsValid()
|
|
&& aCtx->IsRender())
|
|
{
|
|
if (!blitBuffers (theReadFbo, theDrawFbo))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
else if (theDrawFbo == NULL)
|
|
{
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
aCtx->core11fwd->glGetBooleanv (GL_DOUBLEBUFFER, &toCopyBackToFront);
|
|
#endif
|
|
if (toCopyBackToFront
|
|
&& myTransientDrawToFront)
|
|
{
|
|
if (!HasImmediateStructures()
|
|
&& !theIsPartialUpdate)
|
|
{
|
|
// prefer Swap Buffers within Redraw in compatibility mode (without FBO)
|
|
return true;
|
|
}
|
|
if (!copyBackToFront())
|
|
{
|
|
toCopyBackToFront = GL_FALSE;
|
|
myBackBufferRestored = Standard_False;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
toCopyBackToFront = GL_FALSE;
|
|
myBackBufferRestored = Standard_False;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
myBackBufferRestored = Standard_False;
|
|
}
|
|
myIsImmediateDrawn = Standard_True;
|
|
|
|
myWorkspace->UseZBuffer() = Standard_True;
|
|
myWorkspace->UseDepthWrite() = Standard_True;
|
|
glDepthFunc (GL_LEQUAL);
|
|
glDepthMask (GL_TRUE);
|
|
glEnable (GL_DEPTH_TEST);
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
glClearDepth (1.0);
|
|
#else
|
|
glClearDepthf (1.0f);
|
|
#endif
|
|
|
|
render (theProjection, theDrawFbo, theOitAccumFbo, Standard_True);
|
|
|
|
return !toCopyBackToFront;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : Render
|
|
//purpose :
|
|
//=======================================================================
|
|
void OpenGl_View::render (Graphic3d_Camera::Projection theProjection,
|
|
OpenGl_FrameBuffer* theOutputFBO,
|
|
OpenGl_FrameBuffer* theOitAccumFbo,
|
|
const Standard_Boolean theToDrawImmediate)
|
|
{
|
|
// ==================================
|
|
// Step 1: Prepare for render
|
|
// ==================================
|
|
|
|
const Handle(OpenGl_Context)& aContext = myWorkspace->GetGlContext();
|
|
aContext->SetAllowSampleAlphaToCoverage (myRenderParams.ToEnableAlphaToCoverage
|
|
&& theOutputFBO != NULL
|
|
&& theOutputFBO->NbSamples() != 0);
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
// Disable current clipping planes
|
|
if (aContext->core11 != NULL)
|
|
{
|
|
const Standard_Integer aMaxPlanes = aContext->MaxClipPlanes();
|
|
for (Standard_Integer aClipPlaneId = GL_CLIP_PLANE0; aClipPlaneId < GL_CLIP_PLANE0 + aMaxPlanes; ++aClipPlaneId)
|
|
{
|
|
aContext->core11fwd->glDisable (aClipPlaneId);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// update states of OpenGl_BVHTreeSelector (frustum culling algorithm);
|
|
// note that we pass here window dimensions ignoring Graphic3d_RenderingParams::RenderResolutionScale
|
|
myBVHSelector.SetViewVolume (myCamera);
|
|
myBVHSelector.SetViewportSize (myWindow->Width(), myWindow->Height(), myRenderParams.ResolutionRatio());
|
|
myBVHSelector.CacheClipPtsProjections();
|
|
|
|
const Handle(OpenGl_ShaderManager)& aManager = aContext->ShaderManager();
|
|
const Handle(Graphic3d_LightSet)& aLights = myShadingModel == Graphic3d_TOSM_UNLIT ? myNoShadingLight : myLights;
|
|
Standard_Size aLightsRevision = 0;
|
|
if (!aLights.IsNull())
|
|
{
|
|
aLightsRevision = aLights->UpdateRevision();
|
|
}
|
|
if (StateInfo (myCurrLightSourceState, aManager->LightSourceState().Index()) != myLastLightSourceState
|
|
|| aLightsRevision != myLightsRevision)
|
|
{
|
|
myLightsRevision = aLightsRevision;
|
|
aManager->UpdateLightSourceStateTo (aLights, SpecIBLMapLevels());
|
|
myLastLightSourceState = StateInfo (myCurrLightSourceState, aManager->LightSourceState().Index());
|
|
}
|
|
|
|
// Update matrices if camera has changed.
|
|
Graphic3d_WorldViewProjState aWVPState = myCamera->WorldViewProjState();
|
|
if (myWorldViewProjState != aWVPState)
|
|
{
|
|
myAccumFrames = 0;
|
|
myWorldViewProjState = aWVPState;
|
|
}
|
|
|
|
myLocalOrigin.SetCoord (0.0, 0.0, 0.0);
|
|
aContext->ProjectionState.SetCurrent (myCamera->ProjectionMatrixF());
|
|
aContext->WorldViewState .SetCurrent (myCamera->OrientationMatrixF());
|
|
aContext->ApplyProjectionMatrix();
|
|
aContext->ApplyWorldViewMatrix();
|
|
if (aManager->ModelWorldState().Index() == 0)
|
|
{
|
|
aContext->ShaderManager()->UpdateModelWorldStateTo (OpenGl_Mat4());
|
|
}
|
|
|
|
// ====================================
|
|
// Step 2: Redraw background
|
|
// ====================================
|
|
|
|
// Render background
|
|
if (!theToDrawImmediate)
|
|
{
|
|
drawBackground (myWorkspace);
|
|
}
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
// Switch off lighting by default
|
|
if (aContext->core11 != NULL
|
|
&& aContext->caps->ffpEnable)
|
|
{
|
|
glDisable(GL_LIGHTING);
|
|
}
|
|
#endif
|
|
|
|
// =================================
|
|
// Step 3: Redraw main plane
|
|
// =================================
|
|
|
|
// Setup face culling
|
|
GLboolean isCullFace = GL_FALSE;
|
|
if (myBackfacing != Graphic3d_TOBM_AUTOMATIC)
|
|
{
|
|
isCullFace = glIsEnabled (GL_CULL_FACE);
|
|
if (myBackfacing == Graphic3d_TOBM_DISABLE)
|
|
{
|
|
glEnable (GL_CULL_FACE);
|
|
glCullFace (GL_BACK);
|
|
}
|
|
else
|
|
glDisable (GL_CULL_FACE);
|
|
}
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
// if the view is scaled normal vectors are scaled to unit
|
|
// length for correct displaying of shaded objects
|
|
const gp_Pnt anAxialScale = myCamera->AxialScale();
|
|
if (anAxialScale.X() != 1.F ||
|
|
anAxialScale.Y() != 1.F ||
|
|
anAxialScale.Z() != 1.F)
|
|
{
|
|
aContext->SetGlNormalizeEnabled (Standard_True);
|
|
}
|
|
else
|
|
{
|
|
aContext->SetGlNormalizeEnabled (Standard_False);
|
|
}
|
|
#endif
|
|
|
|
aManager->SetShadingModel (OpenGl_ShaderManager::PBRShadingModelFallback (myShadingModel, checkPBRAvailability()));
|
|
|
|
// Redraw 3d scene
|
|
if (theProjection == Graphic3d_Camera::Projection_MonoLeftEye)
|
|
{
|
|
aContext->ProjectionState.SetCurrent (myCamera->ProjectionStereoLeftF());
|
|
aContext->ApplyProjectionMatrix();
|
|
}
|
|
else if (theProjection == Graphic3d_Camera::Projection_MonoRightEye)
|
|
{
|
|
aContext->ProjectionState.SetCurrent (myCamera->ProjectionStereoRightF());
|
|
aContext->ApplyProjectionMatrix();
|
|
}
|
|
|
|
myWorkspace->SetEnvironmentTexture (myTextureEnv);
|
|
|
|
renderScene (theProjection, theOutputFBO, theOitAccumFbo, theToDrawImmediate);
|
|
|
|
myWorkspace->SetEnvironmentTexture (Handle(OpenGl_TextureSet)());
|
|
|
|
// ===============================
|
|
// Step 4: Trihedron
|
|
// ===============================
|
|
|
|
// Resetting GL parameters according to the default aspects
|
|
// in order to synchronize GL state with the graphic driver state
|
|
// before drawing auxiliary stuff (trihedrons, overlayer)
|
|
myWorkspace->ResetAppliedAspect();
|
|
|
|
// Render trihedron
|
|
if (!theToDrawImmediate)
|
|
{
|
|
renderTrihedron (myWorkspace);
|
|
|
|
// Restore face culling
|
|
if (myBackfacing != Graphic3d_TOBM_AUTOMATIC)
|
|
{
|
|
if (isCullFace)
|
|
{
|
|
glEnable (GL_CULL_FACE);
|
|
glCullFace (GL_BACK);
|
|
}
|
|
else
|
|
glDisable (GL_CULL_FACE);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
renderFrameStats();
|
|
}
|
|
|
|
myWorkspace->ResetAppliedAspect();
|
|
aContext->SetAllowSampleAlphaToCoverage (false);
|
|
aContext->SetSampleAlphaToCoverage (false);
|
|
|
|
// reset FFP state for safety
|
|
aContext->BindProgram (Handle(OpenGl_ShaderProgram)());
|
|
if (aContext->caps->ffpEnable)
|
|
{
|
|
aContext->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)());
|
|
}
|
|
|
|
// ==============================================================
|
|
// Step 6: Keep shader manager informed about last View
|
|
// ==============================================================
|
|
|
|
if (!aManager.IsNull())
|
|
{
|
|
aManager->SetLastView (this);
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : InvalidateBVHData
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::InvalidateBVHData (const Graphic3d_ZLayerId theLayerId)
|
|
{
|
|
myZLayers.InvalidateBVHData (theLayerId);
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : renderStructs
|
|
//purpose :
|
|
//=======================================================================
|
|
void OpenGl_View::renderStructs (Graphic3d_Camera::Projection theProjection,
|
|
OpenGl_FrameBuffer* theReadDrawFbo,
|
|
OpenGl_FrameBuffer* theOitAccumFbo,
|
|
const Standard_Boolean theToDrawImmediate)
|
|
{
|
|
myZLayers.UpdateCulling (myWorkspace, theToDrawImmediate);
|
|
if ( myZLayers.NbStructures() <= 0 )
|
|
return;
|
|
|
|
Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext();
|
|
Standard_Boolean toRenderGL = theToDrawImmediate ||
|
|
myRenderParams.Method != Graphic3d_RM_RAYTRACING ||
|
|
myRaytraceInitStatus == OpenGl_RT_FAIL ||
|
|
aCtx->IsFeedback();
|
|
|
|
if (!toRenderGL)
|
|
{
|
|
const Standard_Integer aSizeX = theReadDrawFbo != NULL ? theReadDrawFbo->GetVPSizeX() : myWindow->Width();
|
|
const Standard_Integer aSizeY = theReadDrawFbo != NULL ? theReadDrawFbo->GetVPSizeY() : myWindow->Height();
|
|
|
|
toRenderGL = !initRaytraceResources (aSizeX, aSizeY, aCtx)
|
|
|| !updateRaytraceGeometry (OpenGl_GUM_CHECK, myId, aCtx);
|
|
|
|
toRenderGL |= !myIsRaytraceDataValid; // if no ray-trace data use OpenGL
|
|
|
|
if (!toRenderGL)
|
|
{
|
|
myOpenGlFBO ->InitLazy (aCtx, aSizeX, aSizeY, myFboColorFormat, myFboDepthFormat, 0);
|
|
|
|
if (theReadDrawFbo != NULL)
|
|
theReadDrawFbo->UnbindBuffer (aCtx);
|
|
|
|
// Prepare preliminary OpenGL output
|
|
if (aCtx->arbFBOBlit != NULL)
|
|
{
|
|
// Render bottom OSD layer
|
|
myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_Bottom, theReadDrawFbo, theOitAccumFbo);
|
|
|
|
const Standard_Integer aPrevFilter = myWorkspace->RenderFilter() & ~(Standard_Integer )(OpenGl_RenderFilter_NonRaytraceableOnly);
|
|
myWorkspace->SetRenderFilter (aPrevFilter | OpenGl_RenderFilter_NonRaytraceableOnly);
|
|
{
|
|
if (theReadDrawFbo != NULL)
|
|
{
|
|
theReadDrawFbo->BindDrawBuffer (aCtx);
|
|
}
|
|
else
|
|
{
|
|
aCtx->arbFBO->glBindFramebuffer (GL_DRAW_FRAMEBUFFER, 0);
|
|
aCtx->SetFrameBufferSRGB (false);
|
|
}
|
|
|
|
// Render non-polygonal elements in default layer
|
|
myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_RayTracable, theReadDrawFbo, theOitAccumFbo);
|
|
}
|
|
myWorkspace->SetRenderFilter (aPrevFilter);
|
|
}
|
|
|
|
if (theReadDrawFbo != NULL)
|
|
{
|
|
theReadDrawFbo->BindBuffer (aCtx);
|
|
}
|
|
else
|
|
{
|
|
aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, 0);
|
|
aCtx->SetFrameBufferSRGB (false);
|
|
}
|
|
|
|
// Reset OpenGl aspects state to default to avoid enabling of
|
|
// backface culling which is not supported in ray-tracing.
|
|
myWorkspace->ResetAppliedAspect();
|
|
|
|
// Ray-tracing polygonal primitive arrays
|
|
raytrace (aSizeX, aSizeY, theProjection, theReadDrawFbo, aCtx);
|
|
|
|
// Render upper (top and topmost) OpenGL layers
|
|
myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_Upper, theReadDrawFbo, theOitAccumFbo);
|
|
}
|
|
}
|
|
|
|
// Redraw 3D scene using OpenGL in standard
|
|
// mode or in case of ray-tracing failure
|
|
if (toRenderGL)
|
|
{
|
|
myZLayers.Render (myWorkspace, theToDrawImmediate, OpenGl_LF_All, theReadDrawFbo, theOitAccumFbo);
|
|
|
|
// Set flag that scene was redrawn by standard pipeline
|
|
myWasRedrawnGL = Standard_True;
|
|
}
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : renderTrihedron
|
|
//purpose :
|
|
//=======================================================================
|
|
void OpenGl_View::renderTrihedron (const Handle(OpenGl_Workspace) &theWorkspace)
|
|
{
|
|
if (myToShowGradTrihedron)
|
|
{
|
|
myGraduatedTrihedron.Render (theWorkspace);
|
|
}
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : renderFrameStats
|
|
//purpose :
|
|
//=======================================================================
|
|
void OpenGl_View::renderFrameStats()
|
|
{
|
|
if (myRenderParams.ToShowStats
|
|
&& myRenderParams.CollectedStats != Graphic3d_RenderingParams::PerfCounters_NONE)
|
|
{
|
|
myFrameStatsPrs.Update (myWorkspace);
|
|
myFrameStatsPrs.Render (myWorkspace);
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : Invalidate
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::Invalidate()
|
|
{
|
|
myBackBufferRestored = Standard_False;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : renderScene
|
|
//purpose :
|
|
//=======================================================================
|
|
void OpenGl_View::renderScene (Graphic3d_Camera::Projection theProjection,
|
|
OpenGl_FrameBuffer* theReadDrawFbo,
|
|
OpenGl_FrameBuffer* theOitAccumFbo,
|
|
const Standard_Boolean theToDrawImmediate)
|
|
{
|
|
const Handle(OpenGl_Context)& aContext = myWorkspace->GetGlContext();
|
|
|
|
// Specify clipping planes in view transformation space
|
|
aContext->ChangeClipping().Reset (myClipPlanes);
|
|
if (!myClipPlanes.IsNull()
|
|
&& !myClipPlanes->IsEmpty())
|
|
{
|
|
aContext->ShaderManager()->UpdateClippingState();
|
|
}
|
|
|
|
renderStructs (theProjection, theReadDrawFbo, theOitAccumFbo, theToDrawImmediate);
|
|
aContext->BindTextures (Handle(OpenGl_TextureSet)(), Handle(OpenGl_ShaderProgram)());
|
|
|
|
// Apply restored view matrix.
|
|
aContext->ApplyWorldViewMatrix();
|
|
|
|
aContext->ChangeClipping().Reset (Handle(Graphic3d_SequenceOfHClipPlane)());
|
|
if (!myClipPlanes.IsNull()
|
|
&& !myClipPlanes->IsEmpty())
|
|
{
|
|
aContext->ShaderManager()->RevertClippingState();
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : bindDefaultFbo
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo)
|
|
{
|
|
Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext();
|
|
OpenGl_FrameBuffer* anFbo = (theCustomFbo != NULL && theCustomFbo->IsValid())
|
|
? theCustomFbo
|
|
: (!aCtx->DefaultFrameBuffer().IsNull()
|
|
&& aCtx->DefaultFrameBuffer()->IsValid()
|
|
? aCtx->DefaultFrameBuffer().operator->()
|
|
: NULL);
|
|
if (anFbo != NULL)
|
|
{
|
|
anFbo->BindBuffer (aCtx);
|
|
anFbo->SetupViewport (aCtx);
|
|
}
|
|
else
|
|
{
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
aCtx->SetReadDrawBuffer (GL_BACK);
|
|
#else
|
|
if (aCtx->arbFBO != NULL)
|
|
{
|
|
aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
|
|
}
|
|
#endif
|
|
const Standard_Integer aViewport[4] = { 0, 0, myWindow->Width(), myWindow->Height() };
|
|
aCtx->ResizeViewport (aViewport);
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : initBlitQuad
|
|
// purpose :
|
|
// =======================================================================
|
|
OpenGl_VertexBuffer* OpenGl_View::initBlitQuad (const Standard_Boolean theToFlip)
|
|
{
|
|
OpenGl_VertexBuffer* aVerts = NULL;
|
|
if (!theToFlip)
|
|
{
|
|
aVerts = &myFullScreenQuad;
|
|
if (!aVerts->IsValid())
|
|
{
|
|
OpenGl_Vec4 aQuad[4] =
|
|
{
|
|
OpenGl_Vec4( 1.0f, -1.0f, 1.0f, 0.0f),
|
|
OpenGl_Vec4( 1.0f, 1.0f, 1.0f, 1.0f),
|
|
OpenGl_Vec4(-1.0f, -1.0f, 0.0f, 0.0f),
|
|
OpenGl_Vec4(-1.0f, 1.0f, 0.0f, 1.0f)
|
|
};
|
|
aVerts->Init (myWorkspace->GetGlContext(), 4, 4, aQuad[0].GetData());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
aVerts = &myFullScreenQuadFlip;
|
|
if (!aVerts->IsValid())
|
|
{
|
|
OpenGl_Vec4 aQuad[4] =
|
|
{
|
|
OpenGl_Vec4( 1.0f, -1.0f, 1.0f, 1.0f),
|
|
OpenGl_Vec4( 1.0f, 1.0f, 1.0f, 0.0f),
|
|
OpenGl_Vec4(-1.0f, -1.0f, 0.0f, 1.0f),
|
|
OpenGl_Vec4(-1.0f, 1.0f, 0.0f, 0.0f)
|
|
};
|
|
aVerts->Init (myWorkspace->GetGlContext(), 4, 4, aQuad[0].GetData());
|
|
}
|
|
}
|
|
return aVerts;
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : blitBuffers
|
|
// purpose :
|
|
// =======================================================================
|
|
bool OpenGl_View::blitBuffers (OpenGl_FrameBuffer* theReadFbo,
|
|
OpenGl_FrameBuffer* theDrawFbo,
|
|
const Standard_Boolean theToFlip)
|
|
{
|
|
Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext();
|
|
const Standard_Integer aReadSizeX = theReadFbo != NULL ? theReadFbo->GetVPSizeX() : myWindow->Width();
|
|
const Standard_Integer aReadSizeY = theReadFbo != NULL ? theReadFbo->GetVPSizeY() : myWindow->Height();
|
|
const Standard_Integer aDrawSizeX = theDrawFbo != NULL ? theDrawFbo->GetVPSizeX() : myWindow->Width();
|
|
const Standard_Integer aDrawSizeY = theDrawFbo != NULL ? theDrawFbo->GetVPSizeY() : myWindow->Height();
|
|
if (theReadFbo == NULL || aCtx->IsFeedback())
|
|
{
|
|
return false;
|
|
}
|
|
else if (theReadFbo == theDrawFbo)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
// clear destination before blitting
|
|
if (theDrawFbo != NULL
|
|
&& theDrawFbo->IsValid())
|
|
{
|
|
theDrawFbo->BindBuffer (aCtx);
|
|
}
|
|
else
|
|
{
|
|
aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
|
|
aCtx->SetFrameBufferSRGB (false);
|
|
}
|
|
const Standard_Integer aViewport[4] = { 0, 0, aDrawSizeX, aDrawSizeY };
|
|
aCtx->ResizeViewport (aViewport);
|
|
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
aCtx->core20fwd->glClearDepth (1.0);
|
|
#else
|
|
aCtx->core20fwd->glClearDepthf (1.0f);
|
|
#endif
|
|
aCtx->core20fwd->glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
|
|
|
const bool toApplyGamma = aCtx->ToRenderSRGB() != aCtx->IsFrameBufferSRGB();
|
|
if (aCtx->arbFBOBlit != NULL
|
|
&& !toApplyGamma
|
|
&& theReadFbo->NbSamples() != 0)
|
|
{
|
|
GLbitfield aCopyMask = 0;
|
|
theReadFbo->BindReadBuffer (aCtx);
|
|
if (theDrawFbo != NULL
|
|
&& theDrawFbo->IsValid())
|
|
{
|
|
theDrawFbo->BindDrawBuffer (aCtx);
|
|
if (theDrawFbo->HasColor()
|
|
&& theReadFbo->HasColor())
|
|
{
|
|
aCopyMask |= GL_COLOR_BUFFER_BIT;
|
|
}
|
|
if (theDrawFbo->HasDepth()
|
|
&& theReadFbo->HasDepth())
|
|
{
|
|
aCopyMask |= GL_DEPTH_BUFFER_BIT;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (theReadFbo->HasColor())
|
|
{
|
|
aCopyMask |= GL_COLOR_BUFFER_BIT;
|
|
}
|
|
if (theReadFbo->HasDepth())
|
|
{
|
|
aCopyMask |= GL_DEPTH_BUFFER_BIT;
|
|
}
|
|
aCtx->arbFBO->glBindFramebuffer (GL_DRAW_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
|
|
aCtx->SetFrameBufferSRGB (false);
|
|
}
|
|
|
|
// we don't copy stencil buffer here... does it matter for performance?
|
|
aCtx->arbFBOBlit->glBlitFramebuffer (0, 0, aReadSizeX, aReadSizeY,
|
|
0, 0, aDrawSizeX, aDrawSizeY,
|
|
aCopyMask, GL_NEAREST);
|
|
const int anErr = ::glGetError();
|
|
if (anErr != GL_NO_ERROR)
|
|
{
|
|
// glBlitFramebuffer() might fail in several cases:
|
|
// - Both FBOs have MSAA and they are samples number does not match.
|
|
// OCCT checks that this does not happen,
|
|
// however some graphics drivers provide an option for overriding MSAA.
|
|
// In this case window MSAA might be non-zero (and application can not check it)
|
|
// and might not match MSAA of our offscreen FBOs.
|
|
// - Pixel formats of FBOs do not match.
|
|
// This also might happen with window has pixel format,
|
|
// e.g. Mesa fails blitting RGBA8 -> RGB8 while other drivers support this conversion.
|
|
TCollection_ExtendedString aMsg = TCollection_ExtendedString() + "FBO blitting has failed [Error #" + anErr + "]\n"
|
|
+ " Please check your graphics driver settings or try updating driver.";
|
|
if (theReadFbo->NbSamples() != 0)
|
|
{
|
|
myToDisableMSAA = true;
|
|
aMsg += "\n MSAA settings should not be overridden by driver!";
|
|
}
|
|
aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
|
|
GL_DEBUG_TYPE_ERROR,
|
|
0,
|
|
GL_DEBUG_SEVERITY_HIGH,
|
|
aMsg);
|
|
}
|
|
|
|
if (theDrawFbo != NULL
|
|
&& theDrawFbo->IsValid())
|
|
{
|
|
theDrawFbo->BindBuffer (aCtx);
|
|
}
|
|
else
|
|
{
|
|
aCtx->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
|
|
aCtx->SetFrameBufferSRGB (false);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
aCtx->core20fwd->glDepthFunc (GL_ALWAYS);
|
|
aCtx->core20fwd->glDepthMask (GL_TRUE);
|
|
aCtx->core20fwd->glEnable (GL_DEPTH_TEST);
|
|
#if defined(GL_ES_VERSION_2_0)
|
|
if (!aCtx->IsGlGreaterEqual (3, 0)
|
|
&& !aCtx->extFragDepth)
|
|
{
|
|
aCtx->core20fwd->glDisable (GL_DEPTH_TEST);
|
|
}
|
|
#endif
|
|
|
|
aCtx->BindTextures (Handle(OpenGl_TextureSet)(), Handle(OpenGl_ShaderProgram)());
|
|
|
|
const Graphic3d_TypeOfTextureFilter aFilter = (aDrawSizeX == aReadSizeX && aDrawSizeY == aReadSizeY) ? Graphic3d_TOTF_NEAREST : Graphic3d_TOTF_BILINEAR;
|
|
const GLint aFilterGl = aFilter == Graphic3d_TOTF_NEAREST ? GL_NEAREST : GL_LINEAR;
|
|
|
|
OpenGl_VertexBuffer* aVerts = initBlitQuad (theToFlip);
|
|
const Handle(OpenGl_ShaderManager)& aManager = aCtx->ShaderManager();
|
|
if (aVerts->IsValid()
|
|
&& aManager->BindFboBlitProgram (theReadFbo != NULL ? theReadFbo->NbSamples() : 0, toApplyGamma))
|
|
{
|
|
aCtx->SetSampleAlphaToCoverage (false);
|
|
theReadFbo->ColorTexture()->Bind (aCtx, Graphic3d_TextureUnit_0);
|
|
if (theReadFbo->ColorTexture()->Sampler()->Parameters()->Filter() != aFilter)
|
|
{
|
|
theReadFbo->ColorTexture()->Sampler()->Parameters()->SetFilter (aFilter);
|
|
aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterGl);
|
|
aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilterGl);
|
|
}
|
|
|
|
theReadFbo->DepthStencilTexture()->Bind (aCtx, Graphic3d_TextureUnit_1);
|
|
if (theReadFbo->DepthStencilTexture()->Sampler()->Parameters()->Filter() != aFilter)
|
|
{
|
|
theReadFbo->DepthStencilTexture()->Sampler()->Parameters()->SetFilter (aFilter);
|
|
aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, aFilterGl);
|
|
aCtx->core20fwd->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, aFilterGl);
|
|
}
|
|
|
|
aVerts->BindVertexAttrib (aCtx, Graphic3d_TOA_POS);
|
|
|
|
aCtx->core20fwd->glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
|
|
|
|
aVerts->UnbindVertexAttrib (aCtx, Graphic3d_TOA_POS);
|
|
theReadFbo->DepthStencilTexture()->Unbind (aCtx, Graphic3d_TextureUnit_1);
|
|
theReadFbo->ColorTexture() ->Unbind (aCtx, Graphic3d_TextureUnit_0);
|
|
aCtx->BindProgram (NULL);
|
|
}
|
|
else
|
|
{
|
|
TCollection_ExtendedString aMsg = TCollection_ExtendedString()
|
|
+ "Error! FBO blitting has failed";
|
|
aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
|
|
GL_DEBUG_TYPE_ERROR,
|
|
0,
|
|
GL_DEBUG_SEVERITY_HIGH,
|
|
aMsg);
|
|
myHasFboBlit = Standard_False;
|
|
theReadFbo->Release (aCtx.operator->());
|
|
return true;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : drawStereoPair
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::drawStereoPair (OpenGl_FrameBuffer* theDrawFbo)
|
|
{
|
|
const Handle(OpenGl_Context)& aCtx = myWorkspace->GetGlContext();
|
|
bindDefaultFbo (theDrawFbo);
|
|
OpenGl_FrameBuffer* aPair[2] =
|
|
{
|
|
myImmediateSceneFbos[0]->IsValid() ? myImmediateSceneFbos[0].operator->() : NULL,
|
|
myImmediateSceneFbos[1]->IsValid() ? myImmediateSceneFbos[1].operator->() : NULL
|
|
};
|
|
if (aPair[0] == NULL
|
|
|| aPair[1] == NULL
|
|
|| !myTransientDrawToFront)
|
|
{
|
|
aPair[0] = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL;
|
|
aPair[1] = myMainSceneFbos[1]->IsValid() ? myMainSceneFbos[1].operator->() : NULL;
|
|
}
|
|
|
|
if (aPair[0] == NULL
|
|
|| aPair[1] == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (aPair[0]->NbSamples() != 0)
|
|
{
|
|
// resolve MSAA buffers before drawing
|
|
if (!myOpenGlFBO ->InitLazy (aCtx, aPair[0]->GetVPSizeX(), aPair[0]->GetVPSizeY(), myFboColorFormat, myFboDepthFormat, 0)
|
|
|| !myOpenGlFBO2->InitLazy (aCtx, aPair[0]->GetVPSizeX(), aPair[0]->GetVPSizeY(), myFboColorFormat, 0, 0))
|
|
{
|
|
aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
|
|
GL_DEBUG_TYPE_ERROR,
|
|
0,
|
|
GL_DEBUG_SEVERITY_HIGH,
|
|
"Error! Unable to allocate FBO for blitting stereo pair");
|
|
bindDefaultFbo (theDrawFbo);
|
|
return;
|
|
}
|
|
|
|
if (!blitBuffers (aPair[0], myOpenGlFBO .operator->(), Standard_False)
|
|
|| !blitBuffers (aPair[1], myOpenGlFBO2.operator->(), Standard_False))
|
|
{
|
|
bindDefaultFbo (theDrawFbo);
|
|
return;
|
|
}
|
|
|
|
aPair[0] = myOpenGlFBO .operator->();
|
|
aPair[1] = myOpenGlFBO2.operator->();
|
|
bindDefaultFbo (theDrawFbo);
|
|
}
|
|
|
|
struct
|
|
{
|
|
Standard_Integer left;
|
|
Standard_Integer top;
|
|
Standard_Integer right;
|
|
Standard_Integer bottom;
|
|
Standard_Integer dx() { return right - left; }
|
|
Standard_Integer dy() { return bottom - top; }
|
|
} aGeom;
|
|
|
|
myWindow->PlatformWindow()->Position (aGeom.left, aGeom.top, aGeom.right, aGeom.bottom);
|
|
|
|
Standard_Boolean toReverse = myRenderParams.ToReverseStereo;
|
|
const Standard_Boolean isOddY = (aGeom.top + aGeom.dy()) % 2 == 1;
|
|
const Standard_Boolean isOddX = aGeom.left % 2 == 1;
|
|
if (isOddY
|
|
&& (myRenderParams.StereoMode == Graphic3d_StereoMode_RowInterlaced
|
|
|| myRenderParams.StereoMode == Graphic3d_StereoMode_ChessBoard))
|
|
{
|
|
toReverse = !toReverse;
|
|
}
|
|
if (isOddX
|
|
&& (myRenderParams.StereoMode == Graphic3d_StereoMode_ColumnInterlaced
|
|
|| myRenderParams.StereoMode == Graphic3d_StereoMode_ChessBoard))
|
|
{
|
|
toReverse = !toReverse;
|
|
}
|
|
|
|
if (toReverse)
|
|
{
|
|
std::swap (aPair[0], aPair[1]);
|
|
}
|
|
|
|
aCtx->core20fwd->glDepthFunc (GL_ALWAYS);
|
|
aCtx->core20fwd->glDepthMask (GL_TRUE);
|
|
aCtx->core20fwd->glEnable (GL_DEPTH_TEST);
|
|
|
|
aCtx->BindTextures (Handle(OpenGl_TextureSet)(), Handle(OpenGl_ShaderProgram)());
|
|
OpenGl_VertexBuffer* aVerts = initBlitQuad (myToFlipOutput);
|
|
|
|
const Handle(OpenGl_ShaderManager)& aManager = aCtx->ShaderManager();
|
|
if (aVerts->IsValid()
|
|
&& aManager->BindStereoProgram (myRenderParams.StereoMode))
|
|
{
|
|
if (myRenderParams.StereoMode == Graphic3d_StereoMode_Anaglyph)
|
|
{
|
|
OpenGl_Mat4 aFilterL, aFilterR;
|
|
aFilterL.SetDiagonal (Graphic3d_Vec4 (0.0f, 0.0f, 0.0f, 0.0f));
|
|
aFilterR.SetDiagonal (Graphic3d_Vec4 (0.0f, 0.0f, 0.0f, 0.0f));
|
|
switch (myRenderParams.AnaglyphFilter)
|
|
{
|
|
case Graphic3d_RenderingParams::Anaglyph_RedCyan_Simple:
|
|
{
|
|
aFilterL.SetRow (0, Graphic3d_Vec4 (1.0f, 0.0f, 0.0f, 0.0f));
|
|
aFilterR.SetRow (1, Graphic3d_Vec4 (0.0f, 1.0f, 0.0f, 0.0f));
|
|
aFilterR.SetRow (2, Graphic3d_Vec4 (0.0f, 0.0f, 1.0f, 0.0f));
|
|
break;
|
|
}
|
|
case Graphic3d_RenderingParams::Anaglyph_RedCyan_Optimized:
|
|
{
|
|
aFilterL.SetRow (0, Graphic3d_Vec4 ( 0.4154f, 0.4710f, 0.16666667f, 0.0f));
|
|
aFilterL.SetRow (1, Graphic3d_Vec4 (-0.0458f, -0.0484f, -0.0257f, 0.0f));
|
|
aFilterL.SetRow (2, Graphic3d_Vec4 (-0.0547f, -0.0615f, 0.0128f, 0.0f));
|
|
aFilterL.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f));
|
|
aFilterR.SetRow (0, Graphic3d_Vec4 (-0.01090909f, -0.03636364f, -0.00606061f, 0.0f));
|
|
aFilterR.SetRow (1, Graphic3d_Vec4 ( 0.37560000f, 0.73333333f, 0.01111111f, 0.0f));
|
|
aFilterR.SetRow (2, Graphic3d_Vec4 (-0.06510000f, -0.12870000f, 1.29710000f, 0.0f));
|
|
aFilterR.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f));
|
|
break;
|
|
}
|
|
case Graphic3d_RenderingParams::Anaglyph_YellowBlue_Simple:
|
|
{
|
|
aFilterL.SetRow (0, Graphic3d_Vec4 (1.0f, 0.0f, 0.0f, 0.0f));
|
|
aFilterL.SetRow (1, Graphic3d_Vec4 (0.0f, 1.0f, 0.0f, 0.0f));
|
|
aFilterR.SetRow (2, Graphic3d_Vec4 (0.0f, 0.0f, 1.0f, 0.0f));
|
|
break;
|
|
}
|
|
case Graphic3d_RenderingParams::Anaglyph_YellowBlue_Optimized:
|
|
{
|
|
aFilterL.SetRow (0, Graphic3d_Vec4 ( 1.062f, -0.205f, 0.299f, 0.0f));
|
|
aFilterL.SetRow (1, Graphic3d_Vec4 (-0.026f, 0.908f, 0.068f, 0.0f));
|
|
aFilterL.SetRow (2, Graphic3d_Vec4 (-0.038f, -0.173f, 0.022f, 0.0f));
|
|
aFilterL.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f));
|
|
aFilterR.SetRow (0, Graphic3d_Vec4 (-0.016f, -0.123f, -0.017f, 0.0f));
|
|
aFilterR.SetRow (1, Graphic3d_Vec4 ( 0.006f, 0.062f, -0.017f, 0.0f));
|
|
aFilterR.SetRow (2, Graphic3d_Vec4 ( 0.094f, 0.185f, 0.911f, 0.0f));
|
|
aFilterR.SetRow (3, Graphic3d_Vec4 ( 0.0f, 0.0f, 0.0f, 0.0f));
|
|
break;
|
|
}
|
|
case Graphic3d_RenderingParams::Anaglyph_GreenMagenta_Simple:
|
|
{
|
|
aFilterR.SetRow (0, Graphic3d_Vec4 (1.0f, 0.0f, 0.0f, 0.0f));
|
|
aFilterL.SetRow (1, Graphic3d_Vec4 (0.0f, 1.0f, 0.0f, 0.0f));
|
|
aFilterR.SetRow (2, Graphic3d_Vec4 (0.0f, 0.0f, 1.0f, 0.0f));
|
|
break;
|
|
}
|
|
case Graphic3d_RenderingParams::Anaglyph_UserDefined:
|
|
{
|
|
aFilterL = myRenderParams.AnaglyphLeft;
|
|
aFilterR = myRenderParams.AnaglyphRight;
|
|
break;
|
|
}
|
|
}
|
|
aCtx->ActiveProgram()->SetUniform (aCtx, "uMultL", aFilterL);
|
|
aCtx->ActiveProgram()->SetUniform (aCtx, "uMultR", aFilterR);
|
|
}
|
|
|
|
aPair[0]->ColorTexture()->Bind (aCtx, Graphic3d_TextureUnit_0);
|
|
aPair[1]->ColorTexture()->Bind (aCtx, Graphic3d_TextureUnit_1);
|
|
aVerts->BindVertexAttrib (aCtx, 0);
|
|
|
|
aCtx->core20fwd->glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
|
|
|
|
aVerts->UnbindVertexAttrib (aCtx, 0);
|
|
aPair[1]->ColorTexture()->Unbind (aCtx, Graphic3d_TextureUnit_1);
|
|
aPair[0]->ColorTexture()->Unbind (aCtx, Graphic3d_TextureUnit_0);
|
|
}
|
|
else
|
|
{
|
|
TCollection_ExtendedString aMsg = TCollection_ExtendedString()
|
|
+ "Error! Anaglyph has failed";
|
|
aCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
|
|
GL_DEBUG_TYPE_ERROR,
|
|
0,
|
|
GL_DEBUG_SEVERITY_HIGH,
|
|
aMsg);
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : copyBackToFront
|
|
// purpose :
|
|
// =======================================================================
|
|
bool OpenGl_View::copyBackToFront()
|
|
{
|
|
myIsImmediateDrawn = Standard_False;
|
|
#if !defined(GL_ES_VERSION_2_0)
|
|
const Handle(OpenGl_Context)& aCtx = myWorkspace->GetGlContext();
|
|
if (aCtx->core11 == NULL)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
OpenGl_Mat4 aProjectMat;
|
|
Graphic3d_TransformUtils::Ortho2D (aProjectMat,
|
|
0.0f, static_cast<GLfloat> (myWindow->Width()),
|
|
0.0f, static_cast<GLfloat> (myWindow->Height()));
|
|
|
|
aCtx->WorldViewState.Push();
|
|
aCtx->ProjectionState.Push();
|
|
|
|
aCtx->WorldViewState.SetIdentity();
|
|
aCtx->ProjectionState.SetCurrent (aProjectMat);
|
|
|
|
aCtx->ApplyProjectionMatrix();
|
|
aCtx->ApplyWorldViewMatrix();
|
|
|
|
// synchronize FFP state before copying pixels
|
|
aCtx->BindProgram (Handle(OpenGl_ShaderProgram)());
|
|
aCtx->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)());
|
|
aCtx->DisableFeatures();
|
|
|
|
switch (aCtx->DrawBuffer())
|
|
{
|
|
case GL_BACK_LEFT:
|
|
{
|
|
aCtx->SetReadBuffer (GL_BACK_LEFT);
|
|
aCtx->SetDrawBuffer (GL_FRONT_LEFT);
|
|
break;
|
|
}
|
|
case GL_BACK_RIGHT:
|
|
{
|
|
aCtx->SetReadBuffer (GL_BACK_RIGHT);
|
|
aCtx->SetDrawBuffer (GL_FRONT_RIGHT);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
aCtx->SetReadBuffer (GL_BACK);
|
|
aCtx->SetDrawBuffer (GL_FRONT);
|
|
break;
|
|
}
|
|
}
|
|
|
|
aCtx->core11->glRasterPos2i (0, 0);
|
|
aCtx->core11->glCopyPixels (0, 0, myWindow->Width() + 1, myWindow->Height() + 1, GL_COLOR);
|
|
//aCtx->core11->glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_DEPTH);
|
|
|
|
aCtx->EnableFeatures();
|
|
|
|
aCtx->WorldViewState.Pop();
|
|
aCtx->ProjectionState.Pop();
|
|
aCtx->ApplyProjectionMatrix();
|
|
|
|
// read/write from front buffer now
|
|
aCtx->SetReadBuffer (aCtx->DrawBuffer());
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : checkOitCompatibility
|
|
// purpose :
|
|
// =======================================================================
|
|
Standard_Boolean OpenGl_View::checkOitCompatibility (const Handle(OpenGl_Context)& theGlContext,
|
|
const Standard_Boolean theMSAA)
|
|
{
|
|
// determine if OIT is supported by current OpenGl context
|
|
Standard_Boolean& aToDisableOIT = theMSAA ? myToDisableMSAA : myToDisableOIT;
|
|
if (aToDisableOIT)
|
|
{
|
|
return Standard_False;
|
|
}
|
|
|
|
TCollection_ExtendedString aCompatibilityMsg;
|
|
if (theGlContext->hasFloatBuffer == OpenGl_FeatureNotAvailable
|
|
&& theGlContext->hasHalfFloatBuffer == OpenGl_FeatureNotAvailable)
|
|
{
|
|
aCompatibilityMsg += "OpenGL context does not support floating-point RGBA color buffer format.\n";
|
|
}
|
|
if (theMSAA && theGlContext->hasSampleVariables == OpenGl_FeatureNotAvailable)
|
|
{
|
|
aCompatibilityMsg += "Current version of GLSL does not support built-in sample variables.\n";
|
|
}
|
|
if (theGlContext->hasDrawBuffers == OpenGl_FeatureNotAvailable)
|
|
{
|
|
aCompatibilityMsg += "OpenGL context does not support multiple draw buffers.\n";
|
|
}
|
|
if (aCompatibilityMsg.IsEmpty())
|
|
{
|
|
return Standard_True;
|
|
}
|
|
|
|
aCompatibilityMsg += " Blended order-independent transparency will not be available.\n";
|
|
theGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
|
|
GL_DEBUG_TYPE_ERROR,
|
|
0,
|
|
GL_DEBUG_SEVERITY_HIGH,
|
|
aCompatibilityMsg);
|
|
|
|
aToDisableOIT = Standard_True;
|
|
return Standard_False;
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : chooseOitColorConfiguration
|
|
// purpose :
|
|
// =======================================================================
|
|
bool OpenGl_View::chooseOitColorConfiguration (const Handle(OpenGl_Context)& theGlContext,
|
|
const Standard_Integer theConfigIndex,
|
|
OpenGl_ColorFormats& theFormats)
|
|
{
|
|
theFormats.Clear();
|
|
switch (theConfigIndex)
|
|
{
|
|
case 0: // choose best applicable color format combination
|
|
{
|
|
theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_RGBA16F : GL_RGBA32F);
|
|
theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_R16F : GL_R32F);
|
|
return true;
|
|
}
|
|
case 1: // choose non-optimal applicable color format combination
|
|
{
|
|
theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_RGBA16F : GL_RGBA32F);
|
|
theFormats.Append (theGlContext->hasHalfFloatBuffer != OpenGl_FeatureNotAvailable ? GL_RGBA16F : GL_RGBA32F);
|
|
return true;
|
|
}
|
|
}
|
|
return false; // color combination does not exist
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : checkPBRAvailability
|
|
// purpose :
|
|
// =======================================================================
|
|
Standard_Boolean OpenGl_View::checkPBRAvailability() const
|
|
{
|
|
return myWorkspace->GetGlContext()->HasPBR()
|
|
&& !myPBREnvironment.IsNull();
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : bakePBREnvironment
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::bakePBREnvironment (const Handle(OpenGl_Context)& theCtx)
|
|
{
|
|
const Handle(OpenGl_TextureSet)& aTextureSet = myCubeMapParams->TextureSet (theCtx);
|
|
if (!aTextureSet.IsNull()
|
|
&& !aTextureSet->IsEmpty())
|
|
{
|
|
myPBREnvironment->Bake (theCtx,
|
|
aTextureSet->First(),
|
|
myBackgroundCubeMap->ZIsInverted(),
|
|
myBackgroundCubeMap->IsTopDown(),
|
|
myRenderParams.PbrEnvBakingDiffNbSamples,
|
|
myRenderParams.PbrEnvBakingSpecNbSamples,
|
|
myRenderParams.PbrEnvBakingProbability);
|
|
}
|
|
else
|
|
{
|
|
myPBREnvironment->Clear (theCtx);
|
|
}
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : clearPBREnvironment
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::clearPBREnvironment (const Handle(OpenGl_Context)& theCtx)
|
|
{
|
|
myPBREnvironment->Clear (theCtx);
|
|
}
|
|
|
|
// =======================================================================
|
|
// function : clearPBREnvironment
|
|
// purpose :
|
|
// =======================================================================
|
|
void OpenGl_View::processPBREnvRequest (const Handle(OpenGl_Context)& theCtx)
|
|
{
|
|
if (myPBREnvState == OpenGl_PBREnvState_CREATED)
|
|
{
|
|
switch (myPBREnvRequest)
|
|
{
|
|
case OpenGl_PBREnvRequest_NONE: return;
|
|
case OpenGl_PBREnvRequest_BAKE: bakePBREnvironment (theCtx); break;
|
|
case OpenGl_PBREnvRequest_CLEAR: clearPBREnvironment (theCtx); break;
|
|
}
|
|
}
|
|
myPBREnvRequest = OpenGl_PBREnvRequest_NONE;
|
|
}
|