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occt/src/OpenGl/OpenGl_Workspace.cxx

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// Created on: 2011-09-20
// Created by: Sergey ZERCHANINOV
// Copyright (c) 2011-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <OpenGl_Workspace.hxx>
#include <OpenGl_ArbFBO.hxx>
#include <OpenGl_AspectLine.hxx>
#include <OpenGl_AspectFace.hxx>
#include <OpenGl_AspectMarker.hxx>
#include <OpenGl_AspectText.hxx>
#include <OpenGl_Context.hxx>
#include <OpenGl_Element.hxx>
#include <OpenGl_FrameBuffer.hxx>
#include <OpenGl_GlCore15.hxx>
#include <OpenGl_SceneGeometry.hxx>
#include <OpenGl_Structure.hxx>
#include <OpenGl_Sampler.hxx>
#include <OpenGl_ShaderManager.hxx>
#include <OpenGl_Texture.hxx>
#include <OpenGl_View.hxx>
#include <OpenGl_Window.hxx>
#include <Graphic3d_TextureParams.hxx>
#include <Graphic3d_TransformUtils.hxx>
#include <NCollection_AlignedAllocator.hxx>
IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Workspace,Standard_Transient)
IMPLEMENT_STANDARD_RTTIEXT(OpenGl_RaytraceFilter,OpenGl_RenderFilter)
#ifdef HAVE_GL2PS
#include <gl2ps.h>
/* OCC22216 NOTE: linker dependency can be switched off by undefining macro.
Pragma comment for gl2ps.lib is defined only here. */
#ifdef _MSC_VER
#pragma comment( lib, "gl2ps.lib" )
#endif
#endif
namespace
{
static const OpenGl_Vec4 THE_WHITE_COLOR (1.0f, 1.0f, 1.0f, 1.0f);
static const OpenGl_Vec4 THE_BLACK_COLOR (0.0f, 0.0f, 0.0f, 1.0f);
static const OpenGl_AspectLine myDefaultAspectLine;
static const OpenGl_AspectFace myDefaultAspectFace;
static const OpenGl_AspectMarker myDefaultAspectMarker;
static const OpenGl_AspectText myDefaultAspectText;
static const OpenGl_Matrix myDefaultMatrix =
{
{{ 1.0F, 0.0F, 0.0F, 0.0F },
{ 0.0F, 1.0F, 0.0F, 0.0F },
{ 0.0F, 0.0F, 1.0F, 0.0F },
{ 0.0F, 0.0F, 0.0F, 1.0F }}
};
}
// =======================================================================
// function : Init
// purpose :
// =======================================================================
void OpenGl_Material::Init (const Graphic3d_MaterialAspect& theMat,
const Quantity_Color& theInteriorColor)
{
const bool isPhysic = theMat.MaterialType (Graphic3d_MATERIAL_PHYSIC);
ChangeShine() = 128.0f * theMat.Shininess();
ChangeTransparency() = theMat.Alpha();
// ambient component
if (theMat.ReflectionMode (Graphic3d_TOR_AMBIENT))
{
const OpenGl_Vec3& aSrcAmb = isPhysic ? theMat.AmbientColor() : theInteriorColor;
Ambient = OpenGl_Vec4 (aSrcAmb * theMat.Ambient(), 1.0f);
}
else
{
Ambient = THE_BLACK_COLOR;
}
// diffusion component
if (theMat.ReflectionMode (Graphic3d_TOR_DIFFUSE))
{
const OpenGl_Vec3& aSrcDif = isPhysic ? theMat.DiffuseColor() : theInteriorColor;
Diffuse = OpenGl_Vec4 (aSrcDif * theMat.Diffuse(), 1.0f);
}
else
{
Diffuse = THE_BLACK_COLOR;
}
// specular component
if (theMat.ReflectionMode (Graphic3d_TOR_SPECULAR))
{
const OpenGl_Vec3& aSrcSpe = isPhysic ? (const OpenGl_Vec3& )theMat.SpecularColor() : THE_WHITE_COLOR.rgb();
Specular = OpenGl_Vec4 (aSrcSpe * theMat.Specular(), 1.0f);
}
else
{
Specular = THE_BLACK_COLOR;
}
// emission component
if (theMat.ReflectionMode (Graphic3d_TOR_EMISSION))
{
const OpenGl_Vec3& aSrcEms = isPhysic ? theMat.EmissiveColor() : theInteriorColor;
Emission = OpenGl_Vec4 (aSrcEms * theMat.Emissive(), 1.0f);
}
else
{
Emission = THE_BLACK_COLOR;
}
}
// =======================================================================
// function : OpenGl_Workspace
// purpose :
// =======================================================================
OpenGl_Workspace::OpenGl_Workspace (OpenGl_View* theView, const Handle(OpenGl_Window)& theWindow)
: myView (theView),
myWindow (theWindow),
myGlContext (!theWindow.IsNull() ? theWindow->GetGlContext() : NULL),
myUseZBuffer (Standard_True),
myUseDepthWrite (Standard_True),
//
myAspectLineSet (&myDefaultAspectLine),
myAspectFaceSet (&myDefaultAspectFace),
myAspectMarkerSet (&myDefaultAspectMarker),
myAspectTextSet (&myDefaultAspectText),
//
ViewMatrix_applied (&myDefaultMatrix),
StructureMatrix_applied (&myDefaultMatrix),
myToAllowFaceCulling (false),
myModelViewMatrix (myDefaultMatrix)
{
if (!myGlContext.IsNull() && myGlContext->MakeCurrent())
{
myGlContext->core11fwd->glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
// General initialization of the context
#if !defined(GL_ES_VERSION_2_0)
if (myGlContext->core11 != NULL)
{
// Eviter d'avoir les faces mal orientees en noir.
// Pourrait etre utiliser pour detecter les problemes d'orientation
glLightModeli ((GLenum )GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
// Optimisation pour le Fog et l'antialiasing
glHint (GL_FOG_HINT, GL_FASTEST);
glHint (GL_POINT_SMOOTH_HINT, GL_FASTEST);
}
glHint (GL_LINE_SMOOTH_HINT, GL_FASTEST);
glHint (GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
#endif
}
myDefaultCappingAlgoFilter = new OpenGl_CappingAlgoFilter();
myNoneCulling .Aspect()->SetSuppressBackFaces (false);
myNoneCulling .Aspect()->SetDrawEdges (false);
myFrontCulling.Aspect()->SetSuppressBackFaces (true);
myFrontCulling.Aspect()->SetDrawEdges (false);
}
// =======================================================================
// function : Activate
// purpose :
// =======================================================================
Standard_Boolean OpenGl_Workspace::Activate()
{
if (myWindow.IsNull() || !myWindow->Activate())
{
return Standard_False;
}
ViewMatrix_applied = &myDefaultMatrix;
StructureMatrix_applied = &myDefaultMatrix;
ResetAppliedAspect();
// reset state for safety
myGlContext->BindProgram (Handle(OpenGl_ShaderProgram)());
if (myGlContext->core20fwd != NULL)
{
myGlContext->core20fwd->glUseProgram (OpenGl_ShaderProgram::NO_PROGRAM);
}
myGlContext->ShaderManager()->PushState (Handle(OpenGl_ShaderProgram)());
return Standard_True;
}
//=======================================================================
//function : ResetAppliedAspect
//purpose : Sets default values of GL parameters in accordance with default aspects
//=======================================================================
void OpenGl_Workspace::ResetAppliedAspect()
{
myGlContext->BindDefaultVao();
myHighlightStyle.Nullify();
myToAllowFaceCulling = false;
myAspectLineSet = &myDefaultAspectLine;
myAspectFaceSet = &myDefaultAspectFace;
myAspectFaceApplied.Nullify();
myAspectMarkerSet = &myDefaultAspectMarker;
myAspectMarkerApplied.Nullify();
myAspectTextSet = &myDefaultAspectText;
myPolygonOffsetApplied= Graphic3d_PolygonOffset();
ApplyAspectLine();
ApplyAspectFace();
ApplyAspectMarker();
ApplyAspectText();
myGlContext->SetLineStipple(myDefaultAspectLine.Aspect()->LinePattern());
myGlContext->SetLineWidth (myDefaultAspectLine.Aspect()->Width());
}
// =======================================================================
// function : SetAspectLine
// purpose :
// =======================================================================
const OpenGl_AspectLine* OpenGl_Workspace::SetAspectLine (const OpenGl_AspectLine* theAspect)
{
const OpenGl_AspectLine* aPrevAspectLine = myAspectLineSet;
myAspectLineSet = theAspect;
return aPrevAspectLine;
}
// =======================================================================
// function : SetAspectFace
// purpose :
// =======================================================================
const OpenGl_AspectFace * OpenGl_Workspace::SetAspectFace (const OpenGl_AspectFace* theAspect)
{
const OpenGl_AspectFace* aPrevAspectFace = myAspectFaceSet;
myAspectFaceSet = theAspect;
return aPrevAspectFace;
}
// =======================================================================
// function : SetAspectMarker
// purpose :
// =======================================================================
const OpenGl_AspectMarker* OpenGl_Workspace::SetAspectMarker (const OpenGl_AspectMarker* theAspect)
{
const OpenGl_AspectMarker* aPrevAspectMarker = myAspectMarkerSet;
myAspectMarkerSet = theAspect;
return aPrevAspectMarker;
}
// =======================================================================
// function : SetAspectText
// purpose :
// =======================================================================
const OpenGl_AspectText * OpenGl_Workspace::SetAspectText (const OpenGl_AspectText* theAspect)
{
const OpenGl_AspectText* aPrevAspectText = myAspectTextSet;
myAspectTextSet = theAspect;
return aPrevAspectText;
}
// =======================================================================
// function : ApplyAspectFace
// purpose :
// =======================================================================
const OpenGl_AspectFace* OpenGl_Workspace::ApplyAspectFace()
{
if (myView->BackfacingModel() == Graphic3d_TOBM_AUTOMATIC)
{
// manage back face culling mode, disable culling when clipping is enabled
bool toSuppressBackFaces = myToAllowFaceCulling
&& myAspectFaceSet->Aspect()->ToSuppressBackFaces();
if (toSuppressBackFaces)
{
if (myGlContext->Clipping().IsClippingOrCappingOn()
|| myAspectFaceSet->Aspect()->InteriorStyle() == Aspect_IS_HATCH)
{
toSuppressBackFaces = false;
}
}
if (toSuppressBackFaces)
{
if ((float )myAspectFaceSet->Aspect()->FrontMaterial().Transparency() != 0.0f)
{
// disable culling in case of translucent shading aspect
toSuppressBackFaces = false;
}
}
myGlContext->SetCullBackFaces (toSuppressBackFaces);
}
if (myAspectFaceSet->Aspect() == myAspectFaceApplied
&& myHighlightStyle == myAspectFaceAppliedWithHL)
{
return myAspectFaceSet;
}
myAspectFaceAppliedWithHL = myHighlightStyle;
#if !defined(GL_ES_VERSION_2_0)
const Aspect_InteriorStyle anIntstyle = myAspectFaceSet->Aspect()->InteriorStyle();
if (myAspectFaceApplied.IsNull()
|| myAspectFaceApplied->InteriorStyle() != anIntstyle)
{
switch (anIntstyle)
{
case Aspect_IS_EMPTY:
case Aspect_IS_HOLLOW:
{
myGlContext->SetPolygonMode (GL_LINE);
break;
}
case Aspect_IS_HATCH:
{
myGlContext->SetPolygonMode (GL_FILL);
myGlContext->SetPolygonHatchEnabled (true);
break;
}
case Aspect_IS_SOLID:
case Aspect_IS_HIDDENLINE:
{
myGlContext->SetPolygonMode (GL_FILL);
myGlContext->SetPolygonHatchEnabled (false);
break;
}
case Aspect_IS_POINT:
{
myGlContext->SetPolygonMode (GL_POINT);
break;
}
}
}
if (anIntstyle == Aspect_IS_HATCH)
{
myGlContext->SetPolygonHatchStyle (myAspectFaceSet->Aspect()->HatchStyle());
}
#endif
// Aspect_POM_None means: do not change current settings
if ((myAspectFaceSet->Aspect()->PolygonOffset().Mode & Aspect_POM_None) != Aspect_POM_None)
{
if (myPolygonOffsetApplied.Mode != myAspectFaceSet->Aspect()->PolygonOffset().Mode
|| myPolygonOffsetApplied.Factor != myAspectFaceSet->Aspect()->PolygonOffset().Factor
|| myPolygonOffsetApplied.Units != myAspectFaceSet->Aspect()->PolygonOffset().Units)
{
SetPolygonOffset (myAspectFaceSet->Aspect()->PolygonOffset());
}
}
// Case of hidden line
if (myAspectFaceSet->Aspect()->InteriorStyle() == Aspect_IS_HIDDENLINE)
{
// copy all values including line edge aspect
*myAspectFaceHl.Aspect().operator->() = *myAspectFaceSet->Aspect();
myAspectFaceHl.SetAspectEdge (myAspectFaceSet->AspectEdge());
myAspectFaceHl.Aspect()->SetInteriorColor (myView->BackgroundColor().GetRGB());
myAspectFaceHl.SetNoLighting (true);
myAspectFaceSet = &myAspectFaceHl;
}
else
{
myGlContext->SetShadingMaterial (myAspectFaceSet, myHighlightStyle);
}
if (myAspectFaceSet->Aspect()->ToMapTexture())
{
myGlContext->BindTextures (myAspectFaceSet->TextureSet (myGlContext));
}
else
{
myGlContext->BindTextures (myEnvironmentTexture);
}
myAspectFaceApplied = myAspectFaceSet->Aspect();
return myAspectFaceSet;
}
//=======================================================================
//function : SetPolygonOffset
//purpose :
//=======================================================================
void OpenGl_Workspace::SetPolygonOffset (const Graphic3d_PolygonOffset& theParams)
{
myPolygonOffsetApplied = theParams;
if ((theParams.Mode & Aspect_POM_Fill) == Aspect_POM_Fill)
{
glEnable (GL_POLYGON_OFFSET_FILL);
}
else
{
glDisable (GL_POLYGON_OFFSET_FILL);
}
#if !defined(GL_ES_VERSION_2_0)
if ((theParams.Mode & Aspect_POM_Line) == Aspect_POM_Line)
{
glEnable (GL_POLYGON_OFFSET_LINE);
}
else
{
glDisable (GL_POLYGON_OFFSET_LINE);
}
if ((theParams.Mode & Aspect_POM_Point) == Aspect_POM_Point)
{
glEnable (GL_POLYGON_OFFSET_POINT);
}
else
{
glDisable (GL_POLYGON_OFFSET_POINT);
}
#endif
glPolygonOffset (theParams.Factor, theParams.Units);
}
// =======================================================================
// function : ApplyAspectMarker
// purpose :
// =======================================================================
const OpenGl_AspectMarker* OpenGl_Workspace::ApplyAspectMarker()
{
if (myAspectMarkerSet->Aspect() != myAspectMarkerApplied)
{
if (myAspectMarkerApplied.IsNull()
|| (myAspectMarkerSet->Aspect()->Scale() != myAspectMarkerApplied->Scale()))
{
#if !defined(GL_ES_VERSION_2_0)
glPointSize (myAspectMarkerSet->Aspect()->Scale());
#ifdef HAVE_GL2PS
gl2psPointSize (myAspectMarkerSet->Aspect()->Scale());
#endif
#endif
}
myAspectMarkerApplied = myAspectMarkerSet->Aspect();
}
return myAspectMarkerSet;
}
// =======================================================================
// function : Width
// purpose :
// =======================================================================
Standard_Integer OpenGl_Workspace::Width() const
{
return !myView->GlWindow().IsNull() ? myView->GlWindow()->Width() : 0;
}
// =======================================================================
// function : Height
// purpose :
// =======================================================================
Standard_Integer OpenGl_Workspace::Height() const
{
return !myView->GlWindow().IsNull() ? myView->GlWindow()->Height() : 0;
}
// =======================================================================
// function : IsCullingEnabled
// purpose :
// =======================================================================
Standard_Boolean OpenGl_Workspace::IsCullingEnabled() const
{
return myView->IsCullingEnabled();
}
// =======================================================================
// function : FBOCreate
// purpose :
// =======================================================================
Handle(OpenGl_FrameBuffer) OpenGl_Workspace::FBOCreate (const Standard_Integer theWidth,
const Standard_Integer theHeight)
{
// activate OpenGL context
if (!Activate())
return Handle(OpenGl_FrameBuffer)();
// create the FBO
const Handle(OpenGl_Context)& aCtx = GetGlContext();
aCtx->BindTextures (Handle(OpenGl_TextureSet)());
Handle(OpenGl_FrameBuffer) aFrameBuffer = new OpenGl_FrameBuffer();
if (!aFrameBuffer->Init (aCtx, theWidth, theHeight, GL_RGBA8, GL_DEPTH24_STENCIL8, 0))
{
aFrameBuffer->Release (aCtx.operator->());
return Handle(OpenGl_FrameBuffer)();
}
return aFrameBuffer;
}
// =======================================================================
// function : FBORelease
// purpose :
// =======================================================================
void OpenGl_Workspace::FBORelease (Handle(OpenGl_FrameBuffer)& theFbo)
{
// activate OpenGL context
if (!Activate()
|| theFbo.IsNull())
{
return;
}
theFbo->Release (GetGlContext().operator->());
theFbo.Nullify();
}
// =======================================================================
// function : getAligned
// purpose :
// =======================================================================
inline Standard_Size getAligned (const Standard_Size theNumber,
const Standard_Size theAlignment)
{
return theNumber + theAlignment - 1 - (theNumber - 1) % theAlignment;
}
template<typename T>
inline void convertRowFromRgba (T* theRgbRow,
const Image_ColorRGBA* theRgbaRow,
const Standard_Size theWidth)
{
for (Standard_Size aCol = 0; aCol < theWidth; ++aCol)
{
const Image_ColorRGBA& anRgba = theRgbaRow[aCol];
T& anRgb = theRgbRow[aCol];
anRgb.r() = anRgba.r();
anRgb.g() = anRgba.g();
anRgb.b() = anRgba.b();
}
}
// =======================================================================
// function : BufferDump
// purpose :
// =======================================================================
Standard_Boolean OpenGl_Workspace::BufferDump (const Handle(OpenGl_FrameBuffer)& theFbo,
Image_PixMap& theImage,
const Graphic3d_BufferType& theBufferType)
{
if (theImage.IsEmpty()
|| !Activate())
{
return Standard_False;
}
GLenum aFormat = 0;
GLenum aType = 0;
bool toSwapRgbaBgra = false;
bool toConvRgba2Rgb = false;
switch (theImage.Format())
{
#if !defined(GL_ES_VERSION_2_0)
case Image_Format_Gray:
aFormat = GL_DEPTH_COMPONENT;
aType = GL_UNSIGNED_BYTE;
break;
case Image_Format_GrayF:
aFormat = GL_DEPTH_COMPONENT;
aType = GL_FLOAT;
break;
case Image_Format_RGB:
aFormat = GL_RGB;
aType = GL_UNSIGNED_BYTE;
break;
case Image_Format_BGR:
aFormat = GL_BGR;
aType = GL_UNSIGNED_BYTE;
break;
case Image_Format_BGRA:
case Image_Format_BGR32:
aFormat = GL_BGRA;
aType = GL_UNSIGNED_BYTE;
break;
case Image_Format_BGRF:
aFormat = GL_BGR;
aType = GL_FLOAT;
break;
case Image_Format_BGRAF:
aFormat = GL_BGRA;
aType = GL_FLOAT;
break;
#else
case Image_Format_Gray:
case Image_Format_GrayF:
case Image_Format_BGRF:
case Image_Format_BGRAF:
return Standard_False;
case Image_Format_BGRA:
case Image_Format_BGR32:
aFormat = GL_RGBA;
aType = GL_UNSIGNED_BYTE;
toSwapRgbaBgra = true;
break;
case Image_Format_BGR:
case Image_Format_RGB:
aFormat = GL_RGBA;
aType = GL_UNSIGNED_BYTE;
toConvRgba2Rgb = true;
break;
#endif
case Image_Format_RGBA:
case Image_Format_RGB32:
aFormat = GL_RGBA;
aType = GL_UNSIGNED_BYTE;
break;
case Image_Format_RGBF:
aFormat = GL_RGB;
aType = GL_FLOAT;
break;
case Image_Format_RGBAF:
aFormat = GL_RGBA;
aType = GL_FLOAT;
break;
case Image_Format_Alpha:
case Image_Format_AlphaF:
return Standard_False; // GL_ALPHA is no more supported in core context
case Image_Format_UNKNOWN:
return Standard_False;
}
if (aFormat == 0)
{
return Standard_False;
}
#if !defined(GL_ES_VERSION_2_0)
GLint aReadBufferPrev = GL_BACK;
if (theBufferType == Graphic3d_BT_Depth
&& aFormat != GL_DEPTH_COMPONENT)
{
return Standard_False;
}
#else
(void )theBufferType;
#endif
// bind FBO if used
if (!theFbo.IsNull() && theFbo->IsValid())
{
theFbo->BindBuffer (GetGlContext());
}
else
{
#if !defined(GL_ES_VERSION_2_0)
glGetIntegerv (GL_READ_BUFFER, &aReadBufferPrev);
GLint aDrawBufferPrev = GL_BACK;
glGetIntegerv (GL_DRAW_BUFFER, &aDrawBufferPrev);
glReadBuffer (aDrawBufferPrev);
#endif
}
// setup alignment
const GLint anAligment = Min (GLint(theImage.MaxRowAligmentBytes()), 8); // limit to 8 bytes for OpenGL
glPixelStorei (GL_PACK_ALIGNMENT, anAligment);
bool isBatchCopy = !theImage.IsTopDown();
const GLint anExtraBytes = GLint(theImage.RowExtraBytes());
GLint aPixelsWidth = GLint(theImage.SizeRowBytes() / theImage.SizePixelBytes());
Standard_Size aSizeRowBytesEstim = getAligned (theImage.SizePixelBytes() * aPixelsWidth, anAligment);
if (anExtraBytes < anAligment)
{
aPixelsWidth = 0;
}
else if (aSizeRowBytesEstim != theImage.SizeRowBytes())
{
aPixelsWidth = 0;
isBatchCopy = false;
}
#if !defined(GL_ES_VERSION_2_0)
glPixelStorei (GL_PACK_ROW_LENGTH, aPixelsWidth);
#else
if (aPixelsWidth != 0)
{
isBatchCopy = false;
}
#endif
if (toConvRgba2Rgb)
{
Handle(NCollection_BaseAllocator) anAlloc = new NCollection_AlignedAllocator (16);
const Standard_Size aRowSize = theImage.SizeX() * 4;
NCollection_Buffer aRowBuffer (anAlloc);
if (!aRowBuffer.Allocate (aRowSize))
{
return Standard_False;
}
for (Standard_Size aRow = 0; aRow < theImage.SizeY(); ++aRow)
{
// Image_PixMap rows indexation always starts from the upper corner
// while order in memory depends on the flag and processed by ChangeRow() method
glReadPixels (0, GLint(theImage.SizeY() - aRow - 1), GLsizei (theImage.SizeX()), 1, aFormat, aType, aRowBuffer.ChangeData());
const Image_ColorRGBA* aRowDataRgba = (const Image_ColorRGBA* )aRowBuffer.Data();
if (theImage.Format() == Image_Format_BGR)
{
convertRowFromRgba ((Image_ColorBGR* )theImage.ChangeRow (aRow), aRowDataRgba, theImage.SizeX());
}
else
{
convertRowFromRgba ((Image_ColorRGB* )theImage.ChangeRow (aRow), aRowDataRgba, theImage.SizeX());
}
}
}
else if (!isBatchCopy)
{
// copy row by row
for (Standard_Size aRow = 0; aRow < theImage.SizeY(); ++aRow)
{
// Image_PixMap rows indexation always starts from the upper corner
// while order in memory depends on the flag and processed by ChangeRow() method
glReadPixels (0, GLint(theImage.SizeY() - aRow - 1), GLsizei (theImage.SizeX()), 1, aFormat, aType, theImage.ChangeRow (aRow));
}
}
else
{
glReadPixels (0, 0, GLsizei (theImage.SizeX()), GLsizei (theImage.SizeY()), aFormat, aType, theImage.ChangeData());
}
const bool hasErrors = myGlContext->ResetErrors (true);
glPixelStorei (GL_PACK_ALIGNMENT, 1);
#if !defined(GL_ES_VERSION_2_0)
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
#endif
if (!theFbo.IsNull() && theFbo->IsValid())
{
theFbo->UnbindBuffer (GetGlContext());
}
else
{
#if !defined(GL_ES_VERSION_2_0)
glReadBuffer (aReadBufferPrev);
#endif
}
if (toSwapRgbaBgra)
{
Image_PixMap::SwapRgbaBgra (theImage);
}
return !hasErrors;
}
// =======================================================================
// function : ShouldRender
// purpose :
// =======================================================================
Standard_Boolean OpenGl_RaytraceFilter::ShouldRender (const Handle(OpenGl_Workspace)& theWorkspace,
const OpenGl_Element* theElement)
{
Standard_Boolean aPrevFilterResult = Standard_True;
if (!myPrevRenderFilter.IsNull())
{
aPrevFilterResult = myPrevRenderFilter->ShouldRender (theWorkspace, theElement);
}
return aPrevFilterResult &&
!OpenGl_Raytrace::IsRaytracedElement (theElement);
}
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