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0026025: Visualization, TKOpenGl - stereoscopic output does not work

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OpenGl_View::Render() - pass target FBO as parameter.
OpenGl_Context - revise Read/Write buffers management logic, taking into account FBOs.

Graphic3d_Camera::UpdateProjection() - setup LProjection and RProjection
the same as MProjection in case of Projection_MonoLeftEye/Projection_MonoRightEye
for API consistency.
This commit is contained in:
kgv 2015-04-15 16:25:38 +03:00 committed by bugmaster
parent b85b0b0731
commit 38a0206f60
17 changed files with 702 additions and 395 deletions
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2
src/Graphic3d/Graphic3d_Camera.cxx
View File

@ -734,6 +734,7 @@ Graphic3d_Camera::TransformMatrices<Elem_t>&
StereoEyeProj (aLeft, aRight, aBot, aTop,
aZNear, aZFar, aIOD, aFocus,
Standard_True, *theMatrices.MProjection);
*theMatrices.LProjection = *theMatrices.MProjection;
break;
}
@ -742,6 +743,7 @@ Graphic3d_Camera::TransformMatrices<Elem_t>&
StereoEyeProj (aLeft, aRight, aBot, aTop,
aZNear, aZFar, aIOD, aFocus,
Standard_False, *theMatrices.MProjection);
*theMatrices.RProjection = *theMatrices.MProjection;
break;
}

2
src/Graphic3d/Graphic3d_Camera.hxx
View File

@ -90,7 +90,7 @@ public:
//! Enumerates supported monographic projections.
//! - Projection_Orthographic : orthographic projection.
//! - Projection_Perspective : perspective projection.
//! - Projection_Stere : stereographic projection.
//! - Projection_Stereo : stereographic projection.
//! - Projection_MonoLeftEye : mono projection for stereo left eye.
//! - Projection_MonoRightEye : mono projection for stereo right eye.
enum Projection

111
src/OpenGl/OpenGl_Context.cxx
View File

@ -123,6 +123,7 @@ OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps)
#else
myRenderMode (0),
#endif
myReadBuffer (0),
myDrawBuffer (0),
myDefaultVao (0),
myIsGlDebugCtx (Standard_False)
@ -288,93 +289,58 @@ Standard_Integer OpenGl_Context::MaxClipPlanes() const
return myMaxClipPlanes;
}
#if !defined(GL_ES_VERSION_2_0)
inline Standard_Integer stereoToMonoBuffer (const Standard_Integer theBuffer)
{
switch (theBuffer)
{
case GL_BACK_LEFT:
case GL_BACK_RIGHT:
return GL_BACK;
case GL_FRONT_LEFT:
case GL_FRONT_RIGHT:
return GL_FRONT;
default:
return theBuffer;
}
}
#endif
// =======================================================================
// function : SetDrawBufferLeft
// function : SetReadBuffer
// purpose :
// =======================================================================
void OpenGl_Context::SetDrawBufferLeft()
void OpenGl_Context::SetReadBuffer (const Standard_Integer theReadBuffer)
{
#if !defined(GL_ES_VERSION_2_0)
switch (myDrawBuffer)
myReadBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theReadBuffer) : theReadBuffer;
if (myReadBuffer < GL_COLOR_ATTACHMENT0
&& arbFBO != NULL)
{
case GL_BACK_RIGHT :
case GL_BACK :
glDrawBuffer (GL_BACK_LEFT);
myDrawBuffer = GL_BACK_LEFT;
break;
case GL_FRONT_RIGHT :
case GL_FRONT :
glDrawBuffer (GL_FRONT_LEFT);
myDrawBuffer = GL_FRONT_LEFT;
break;
case GL_FRONT_AND_BACK :
case GL_RIGHT :
glDrawBuffer (GL_LEFT);
myDrawBuffer = GL_LEFT;
break;
arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
::glReadBuffer (myReadBuffer);
#else
(void )theReadBuffer;
#endif
}
// =======================================================================
// function : SetDrawBufferRight
// function : SetDrawBuffer
// purpose :
// =======================================================================
void OpenGl_Context::SetDrawBufferRight()
void OpenGl_Context::SetDrawBuffer (const Standard_Integer theDrawBuffer)
{
#if !defined(GL_ES_VERSION_2_0)
switch (myDrawBuffer)
myDrawBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theDrawBuffer) : theDrawBuffer;
if (myDrawBuffer < GL_COLOR_ATTACHMENT0
&& arbFBO != NULL)
{
case GL_BACK_LEFT :
case GL_BACK :
glDrawBuffer (GL_BACK_RIGHT);
myDrawBuffer = GL_BACK_RIGHT;
break;
case GL_FRONT_LEFT :
case GL_FRONT :
glDrawBuffer (GL_FRONT_RIGHT);
myDrawBuffer = GL_FRONT_RIGHT;
break;
case GL_FRONT_AND_BACK :
case GL_LEFT :
glDrawBuffer (GL_RIGHT);
myDrawBuffer = GL_RIGHT;
break;
}
#endif
}
// =======================================================================
// function : SetDrawBufferMono
// purpose :
// =======================================================================
void OpenGl_Context::SetDrawBufferMono()
{
#if !defined(GL_ES_VERSION_2_0)
switch (myDrawBuffer)
{
case GL_BACK_LEFT :
case GL_BACK_RIGHT :
glDrawBuffer (GL_BACK);
myDrawBuffer = GL_BACK;
break;
case GL_FRONT_LEFT :
case GL_FRONT_RIGHT :
glDrawBuffer (GL_FRONT);
myDrawBuffer = GL_FRONT;
break;
case GL_LEFT :
case GL_RIGHT :
glDrawBuffer (GL_FRONT_AND_BACK);
myDrawBuffer = GL_FRONT_AND_BACK;
break;
arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
::glDrawBuffer (myDrawBuffer);
#else
(void )theDrawBuffer;
#endif
}
@ -391,8 +357,9 @@ void OpenGl_Context::FetchState()
::glGetIntegerv (GL_RENDER_MODE, &myRenderMode);
}
// cache draw buffer state
glGetIntegerv (GL_DRAW_BUFFER, &myDrawBuffer);
// cache buffers state
::glGetIntegerv (GL_READ_BUFFER, &myReadBuffer);
::glGetIntegerv (GL_DRAW_BUFFER, &myDrawBuffer);
#endif
}

29
src/OpenGl/OpenGl_Context.hxx
View File

@ -487,20 +487,24 @@ public:
public: //! @name methods to alter or retrieve current state
//! Switch to left stereographic rendering buffer.
//! This method can be used to keep unchanged choise
//! of front/back/both buffer rendering.
Standard_EXPORT void SetDrawBufferLeft();
//! Return active read buffer.
Standard_Integer ReadBuffer() { return myReadBuffer; }
//! Switch to right stereographic rendering buffer.
//! This method can be used to keep unchanged choise
//! of front/back/both buffer rendering.
Standard_EXPORT void SetDrawBufferRight();
//! Switch read buffer, wrapper for ::glReadBuffer().
Standard_EXPORT void SetReadBuffer (const Standard_Integer theReadBuffer);
//! Switch to non-stereographic rendering buffer.
//! This method can be used to keep unchanged choise
//! of front/back/both buffer rendering.
Standard_EXPORT void SetDrawBufferMono();
//! Return active draw buffer.
Standard_Integer DrawBuffer() { return myDrawBuffer; }
//! Switch draw buffer, wrapper for ::glDrawBuffer().
Standard_EXPORT void SetDrawBuffer (const Standard_Integer theDrawBuffer);
//! Switch read/draw buffers.
void SetReadDrawBuffer (const Standard_Integer theBuffer)
{
SetReadBuffer (theBuffer);
SetDrawBuffer (theBuffer);
}
//! Fetch OpenGl context state. This class tracks value of several OpenGl
//! state variables. Consulting the cached values is quicker than
@ -667,6 +671,7 @@ private: //! @name fields tracking current state
Handle(OpenGl_Sampler) myTexSampler; //!< currently active sampler object
Handle(OpenGl_FrameBuffer) myDefaultFbo; //!< default Frame Buffer Object
Standard_Integer myRenderMode; //!< value for active rendering mode
Standard_Integer myReadBuffer; //!< current read buffer
Standard_Integer myDrawBuffer; //!< current draw buffer
unsigned int myDefaultVao; //!< default Vertex Array Object
Standard_Boolean myIsGlDebugCtx; //!< debug context initialization state

17
src/OpenGl/OpenGl_FrameBuffer.cxx
View File

@ -99,6 +99,23 @@ Standard_Boolean OpenGl_FrameBuffer::Init (const Handle(OpenGl_Context)& theGlCo
return Standard_True;
}
// =======================================================================
// function : Init
// purpose :
// =======================================================================
Standard_Boolean OpenGl_FrameBuffer::InitLazy (const Handle(OpenGl_Context)& theGlContext,
const GLsizei theViewportSizeX,
const GLsizei theViewportSizeY)
{
if (myVPSizeX == theViewportSizeX
&& myVPSizeY == theViewportSizeY)
{
return IsValid();
}
return Init (theGlContext, theViewportSizeX, theViewportSizeY);
}
// =======================================================================
// function : InitWithRB
// purpose :

5
src/OpenGl/OpenGl_FrameBuffer.hxx
View File

@ -88,6 +88,11 @@ public:
const GLsizei theViewportSizeX,
const GLsizei theViewportSizeY);
//! (Re-)initialize FBO with specified dimensions.
Standard_EXPORT Standard_Boolean InitLazy (const Handle(OpenGl_Context)& theGlCtx,
const GLsizei theViewportSizeX,
const GLsizei theViewportSizeY);
//! (Re-)initialize FBO with specified dimensions.
//! The Render Buffer Objects will be used for Color, Depth and Stencil attachments (as opposite to textures).
//! @param theGlCtx currently bound OpenGL context

55
src/OpenGl/OpenGl_ShaderManager.cxx
View File

@ -235,6 +235,7 @@ void OpenGl_ShaderManager::clear()
myMapOfLightPrograms.Clear();
myFontProgram.Nullify();
myBlitProgram.Nullify();
myAnaglyphProgram.Nullify();
switchLightPrograms();
}
@ -1578,6 +1579,60 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramPhong (Handle(OpenGl_Sha
return Standard_True;
}
// =======================================================================
// function : prepareStdProgramAnaglyph
// purpose :
// =======================================================================
Standard_Boolean OpenGl_ShaderManager::prepareStdProgramAnaglyph()
{
Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
TCollection_AsciiString aSrcVert =
EOL"THE_SHADER_OUT vec2 TexCoord;"
EOL"void main()"
EOL"{"
EOL" TexCoord = occVertex.zw;"
EOL" gl_Position = vec4(occVertex.x, occVertex.y, 0.0, 1.0);"
EOL"}";
TCollection_AsciiString aSrcFrag =
EOL"uniform sampler2D uLeftSampler;"
EOL"uniform sampler2D uRightSampler;"
EOL
EOL"THE_SHADER_IN vec2 TexCoord;"
EOL
EOL"void main()"
EOL"{"
EOL" vec4 aColorL = occTexture2D (uLeftSampler, TexCoord);"
EOL" vec4 aColorR = occTexture2D (uRightSampler, TexCoord);"
EOL" aColorL.b = 0.0;"
EOL" aColorL.g = 0.0;"
EOL" aColorR.r = 0.0;"
EOL" occFragColor = aColorL + aColorR;"
EOL"}";
#if !defined(GL_ES_VERSION_2_0)
if (myContext->core32 != NULL)
{
aProgramSrc->SetHeader ("#version 150");
}
#endif
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_FRAGMENT, aSrcFrag));
TCollection_AsciiString aKey;
if (!Create (aProgramSrc, aKey, myAnaglyphProgram))
{
myAnaglyphProgram = new OpenGl_ShaderProgram(); // just mark as invalid
return Standard_False;
}
myContext->BindProgram (myAnaglyphProgram);
myAnaglyphProgram->SetSampler (myContext, "uLeftSampler", 0);
myAnaglyphProgram->SetSampler (myContext, "uRightSampler", 1);
myContext->BindProgram (NULL);
return Standard_True;
}
// =======================================================================
// function : bindProgramWithState
// purpose :

16
src/OpenGl/OpenGl_ShaderManager.hxx
View File

@ -156,6 +156,17 @@ public:
&& myContext->BindProgram (myBlitProgram);
}
//! Bind program for rendering Anaglyph image.
Standard_Boolean BindAnaglyphProgram()
{
if (myAnaglyphProgram.IsNull())
{
prepareStdProgramAnaglyph();
}
return !myAnaglyphProgram.IsNull()
&& myContext->BindProgram (myAnaglyphProgram);
}
public:
//! Returns current state of OCCT light sources.
@ -354,6 +365,9 @@ protected:
//! Set pointer myLightPrograms to active lighting programs set from myMapOfLightPrograms
Standard_EXPORT void switchLightPrograms();
//! Prepare standard GLSL program for Anaglyph image.
Standard_EXPORT Standard_Boolean prepareStdProgramAnaglyph();
protected:
Visual3d_TypeOfModel myShadingModel; //!< lighting shading model
@ -364,6 +378,8 @@ protected:
Handle(OpenGl_ShaderProgram) myBlitProgram; //!< standard program for FBO blit emulation
OpenGl_MapOfShaderPrograms myMapOfLightPrograms; //!< map of lighting programs depending on shading model and lights configuration
Handle(OpenGl_ShaderProgram) myAnaglyphProgram; //!< standard program for Anaglyph image
OpenGl_Context* myContext; //!< OpenGL context
protected:

10
src/OpenGl/OpenGl_View.cxx
View File

@ -500,13 +500,3 @@ const TEL_TRANSFORM_PERSISTENCE* OpenGl_View::BeginTransformPersistence (const H
theCtx->ApplyProjectionMatrix();
return aTransPersPrev;
}
/*----------------------------------------------------------------------*/
void OpenGl_View::GetMatrices (OpenGl_Mat4& theOrientation,
OpenGl_Mat4& theViewMapping) const
{
theViewMapping = myCamera->ProjectionMatrixF();
theOrientation = myCamera->OrientationMatrixF();
}
/*----------------------------------------------------------------------*/

12
src/OpenGl/OpenGl_View.hxx
View File

@ -170,6 +170,8 @@ class OpenGl_View : public MMgt_TShared
void Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
const Handle(OpenGl_Workspace)& theWorkspace,
OpenGl_FrameBuffer* theReadDrawFbo,
Graphic3d_Camera::Projection theProjection,
const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer,
@ -198,10 +200,6 @@ class OpenGl_View : public MMgt_TShared
//! marks primitive set for rebuild.
void InvalidateBVHData (const Standard_Integer theLayerId);
//! Returns view-mapping and orientation matrices.
void GetMatrices (OpenGl_Mat4& theOrientation,
OpenGl_Mat4& theViewMapping) const;
//! Returns list of immediate structures rendered on top of main presentation
const OpenGl_SequenceOfStructure& ImmediateStructures() const
{
@ -218,6 +216,7 @@ class OpenGl_View : public MMgt_TShared
protected:
void RenderStructs (const Handle(OpenGl_Workspace)& theWorkspace,
OpenGl_FrameBuffer* theReadDrawFbo,
const Graphic3d_CView& theCView,
const Standard_Boolean theToDrawImmediate);
@ -234,6 +233,7 @@ protected:
//! matrices supplied by 3d view.
void RedrawScene (const Handle(OpenGl_PrinterContext)& thePrintContext,
const Handle(OpenGl_Workspace)& theWorkspace,
OpenGl_FrameBuffer* theReadDrawFbo,
const Graphic3d_CView& theCView,
const Standard_Boolean theToDrawImmediate);
@ -587,14 +587,14 @@ protected: //! @name methods related to ray-tracing
const OpenGl_Vec3* theOrigins,
const OpenGl_Vec3* theDirects,
const OpenGl_Mat4& theUnviewMat,
OpenGl_FrameBuffer* theOutputFBO,
OpenGl_FrameBuffer* theReadDrawFbo,
const Handle(OpenGl_Context)& theGlContext);
//! Redraws the window using OpenGL/GLSL ray-tracing.
Standard_Boolean raytrace (const Graphic3d_CView& theCView,
const Standard_Integer theSizeX,
const Standard_Integer theSizeY,
OpenGl_FrameBuffer* theOutputFBO,
OpenGl_FrameBuffer* theReadDrawFbo,
const Handle(OpenGl_Context)& theGlContext);
protected: //! @name fields related to ray-tracing

80
src/OpenGl/OpenGl_View_2.cxx
View File

@ -245,6 +245,8 @@ void OpenGl_View::DrawBackground (const Handle(OpenGl_Workspace)& theWorkspace)
//call_func_redraw_all_structs_proc
void OpenGl_View::Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
const Handle(OpenGl_Workspace)& theWorkspace,
OpenGl_FrameBuffer* theOutputFBO,
Graphic3d_Camera::Projection theProjection,
const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer,
@ -433,42 +435,17 @@ void OpenGl_View::Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
}
// Redraw 3d scene
if (!myCamera->IsStereo() || !aContext->HasStereoBuffers())
if (theProjection == Graphic3d_Camera::Projection_MonoLeftEye)
{
// single-pass monographic rendering
// redraw scene with normal orientation and projection
RedrawScene (thePrintContext, theWorkspace, theCView, theToDrawImmediate);
}
else
{
// two stereographic passes
// safely switch to left Eye buffer
aContext->SetDrawBufferLeft();
aContext->ProjectionState.SetCurrent (myCamera->ProjectionStereoLeftF());
aContext->ApplyProjectionMatrix();
// redraw left Eye
RedrawScene (thePrintContext, theWorkspace, theCView, theToDrawImmediate);
// reset depth buffer of first rendering pass
if (theWorkspace->UseDepthTest())
{
glClear (GL_DEPTH_BUFFER_BIT);
}
// safely switch to right Eye buffer
aContext->SetDrawBufferRight();
}
else if (theProjection == Graphic3d_Camera::Projection_MonoRightEye)
{
aContext->ProjectionState.SetCurrent (myCamera->ProjectionStereoRightF());
aContext->ApplyProjectionMatrix();
// redraw right Eye
RedrawScene (thePrintContext, theWorkspace, theCView, theToDrawImmediate);
// switch back to monographic rendering
aContext->SetDrawBufferMono();
}
RedrawScene (thePrintContext, theWorkspace, theOutputFBO, theCView, theToDrawImmediate);
// ===============================
// Step 5: Trihedron
@ -547,6 +524,7 @@ void OpenGl_View::InvalidateBVHData (const Graphic3d_ZLayerId theLayerId)
//ExecuteViewDisplay
void OpenGl_View::RenderStructs (const Handle(OpenGl_Workspace)& theWorkspace,
OpenGl_FrameBuffer* theReadDrawFbo,
const Graphic3d_CView& theCView,
const Standard_Boolean theToDrawImmediate)
{
@ -601,21 +579,10 @@ void OpenGl_View::RenderStructs (const Handle(OpenGl_Workspace)& theWorkspace,
if (!toRenderGL)
{
OpenGl_FrameBuffer* anOutputFBO = NULL;
if (theWorkspace->ResultFBO()->IsValid())
{
anOutputFBO = theWorkspace->ResultFBO().operator->();
}
else if (theCView.ptrFBO != NULL)
{
anOutputFBO = (OpenGl_FrameBuffer* )theCView.ptrFBO;
}
const Standard_Integer aSizeX = anOutputFBO != NULL ?
anOutputFBO->GetVPSizeX() : theWorkspace->Width();
const Standard_Integer aSizeY = anOutputFBO != NULL ?
anOutputFBO->GetVPSizeY() : theWorkspace->Height();
const Standard_Integer aSizeX = theReadDrawFbo != NULL ?
theReadDrawFbo->GetVPSizeX() : theWorkspace->Width();
const Standard_Integer aSizeY = theReadDrawFbo != NULL ?
theReadDrawFbo->GetVPSizeY() : theWorkspace->Height();
if (myOpenGlFBO.IsNull())
myOpenGlFBO = new OpenGl_FrameBuffer;
@ -631,8 +598,8 @@ void OpenGl_View::RenderStructs (const Handle(OpenGl_Workspace)& theWorkspace,
myRaytraceFilter->SetPrevRenderFilter (theWorkspace->GetRenderFilter());
if (anOutputFBO != NULL)
anOutputFBO->UnbindBuffer (aCtx);
if (theReadDrawFbo != NULL)
theReadDrawFbo->UnbindBuffer (aCtx);
// Prepare preliminary OpenGL output
if (aCtx->arbFBOBlit != NULL)
@ -642,9 +609,9 @@ void OpenGl_View::RenderStructs (const Handle(OpenGl_Workspace)& theWorkspace,
theWorkspace->SetRenderFilter (myRaytraceFilter);
{
if (anOutputFBO != NULL)
if (theReadDrawFbo != NULL)
{
anOutputFBO->BindReadBuffer (aCtx);
theReadDrawFbo->BindReadBuffer (aCtx);
}
else
{
@ -664,9 +631,9 @@ void OpenGl_View::RenderStructs (const Handle(OpenGl_Workspace)& theWorkspace,
theWorkspace->SetRenderFilter (myRaytraceFilter->PrevRenderFilter());
}
if (anOutputFBO != NULL)
if (theReadDrawFbo != NULL)
{
anOutputFBO->BindBuffer (aCtx);
theReadDrawFbo->BindBuffer (aCtx);
}
else
{
@ -674,7 +641,7 @@ void OpenGl_View::RenderStructs (const Handle(OpenGl_Workspace)& theWorkspace,
}
// Ray-tracing polygonal primitive arrays
raytrace (theCView, aSizeX, aSizeY, anOutputFBO, aCtx);
raytrace (theCView, aSizeX, aSizeY, theReadDrawFbo, aCtx);
// Render upper (top and topmost) OpenGL layers
myZLayers.Render (theWorkspace, theToDrawImmediate, OpenGl_LF_Upper);
@ -1032,6 +999,7 @@ void OpenGl_View::ChangePriority (const OpenGl_Structure *theStructure,
void OpenGl_View::RedrawScene (const Handle(OpenGl_PrinterContext)& thePrintContext,
const Handle(OpenGl_Workspace)& theWorkspace,
OpenGl_FrameBuffer* theReadDrawFbo,
const Graphic3d_CView& theCView,
const Standard_Boolean theToDrawImmediate)
{
@ -1165,14 +1133,14 @@ void OpenGl_View::RedrawScene (const Handle(OpenGl_PrinterContext)& thePrintCont
theWorkspace->NamedStatus |= OPENGL_NS_FORBIDSETTEX;
theWorkspace->DisableTexture();
// Render the view
RenderStructs (theWorkspace, theCView, theToDrawImmediate);
RenderStructs (theWorkspace, theReadDrawFbo, theCView, theToDrawImmediate);
break;
case Visual3d_TOD_ENVIRONMENT:
theWorkspace->NamedStatus |= OPENGL_NS_FORBIDSETTEX;
theWorkspace->EnableTexture (myTextureEnv);
// Render the view
RenderStructs (theWorkspace, theCView, theToDrawImmediate);
RenderStructs (theWorkspace, theReadDrawFbo, theCView, theToDrawImmediate);
theWorkspace->DisableTexture();
break;
@ -1180,7 +1148,7 @@ void OpenGl_View::RedrawScene (const Handle(OpenGl_PrinterContext)& thePrintCont
// First pass
theWorkspace->NamedStatus &= ~OPENGL_NS_FORBIDSETTEX;
// Render the view
RenderStructs (theWorkspace, theCView, theToDrawImmediate);
RenderStructs (theWorkspace, theReadDrawFbo, theCView, theToDrawImmediate);
theWorkspace->DisableTexture();
// Second pass
@ -1213,7 +1181,7 @@ void OpenGl_View::RedrawScene (const Handle(OpenGl_PrinterContext)& thePrintCont
theWorkspace->NamedStatus |= OPENGL_NS_FORBIDSETTEX;
// Render the view
RenderStructs (theWorkspace, theCView, theToDrawImmediate);
RenderStructs (theWorkspace, theReadDrawFbo, theCView, theToDrawImmediate);
theWorkspace->DisableTexture();
// Restore properties back

24
src/OpenGl/OpenGl_View_Raytrace.cxx
View File

@ -2208,7 +2208,7 @@ Standard_Boolean OpenGl_View::runRaytraceShaders (const Graphic3d_CView&
const OpenGl_Vec3* theOrigins,
const OpenGl_Vec3* theDirects,
const OpenGl_Mat4& theUnviewMat,
OpenGl_FrameBuffer* theOutputFBO,
OpenGl_FrameBuffer* theReadDrawFbo,
const Handle(OpenGl_Context)& theGlContext)
{
bindRaytraceTextures (theGlContext);
@ -2296,8 +2296,8 @@ Standard_Boolean OpenGl_View::runRaytraceShaders (const Graphic3d_CView&
{
glEnable (GL_BLEND);
if (theOutputFBO != NULL)
theOutputFBO->BindBuffer (theGlContext);
if (theReadDrawFbo != NULL)
theReadDrawFbo->BindBuffer (theGlContext);
}
else
{
@ -2328,7 +2328,7 @@ Standard_Boolean OpenGl_View::runRaytraceShaders (const Graphic3d_CView&
Standard_Boolean OpenGl_View::raytrace (const Graphic3d_CView& theCView,
const Standard_Integer theSizeX,
const Standard_Integer theSizeY,
OpenGl_FrameBuffer* theOutputFBO,
OpenGl_FrameBuffer* theReadDrawFbo,
const Handle(OpenGl_Context)& theGlContext)
{
if (!initRaytraceResources (theCView, theGlContext))
@ -2347,15 +2347,11 @@ Standard_Boolean OpenGl_View::raytrace (const Graphic3d_CView& theCView,
}
// Get model-view and projection matrices
OpenGl_Mat4 aOrientationMatrix;
OpenGl_Mat4 aViewMappingMatrix;
OpenGl_Mat4 aOrientationMatrix = myCamera->OrientationMatrixF();
OpenGl_Mat4 aViewMappingMatrix = theGlContext->ProjectionState.Current();
OpenGl_Mat4 aInverOrientMatrix;
GetMatrices (aOrientationMatrix,
aViewMappingMatrix);
aOrientationMatrix.Inverted (aInverOrientMatrix);
if (!updateRaytraceLightSources (aInverOrientMatrix, theGlContext))
{
return Standard_False;
@ -2375,9 +2371,9 @@ Standard_Boolean OpenGl_View::raytrace (const Graphic3d_CView& theCView,
glDisable (GL_DEPTH_TEST);
glBlendFunc (GL_ONE, GL_SRC_ALPHA);
if (theOutputFBO != NULL)
if (theReadDrawFbo != NULL)
{
theOutputFBO->BindBuffer (theGlContext);
theReadDrawFbo->BindBuffer (theGlContext);
}
// Generate ray-traced image
@ -2397,7 +2393,7 @@ Standard_Boolean OpenGl_View::raytrace (const Graphic3d_CView& theCView,
aOrigins,
aDirects,
anUnviewMat,
theOutputFBO,
theReadDrawFbo,
theGlContext);
if (!aResult)

22
src/OpenGl/OpenGl_Window.cxx
View File

@ -896,25 +896,3 @@ void OpenGl_Window::DisableFeatures() const
}
#endif
}
// =======================================================================
// function : MakeFrontBufCurrent
// purpose : TelMakeFrontBufCurrent
// =======================================================================
void OpenGl_Window::MakeFrontBufCurrent() const
{
#if !defined(GL_ES_VERSION_2_0)
glDrawBuffer (GL_FRONT);
#endif
}
// =======================================================================
// function : MakeBackBufCurrent
// purpose : TelMakeBackBufCurrent
// =======================================================================
void OpenGl_Window::MakeBackBufCurrent() const
{
#if !defined(GL_ES_VERSION_2_0)
glDrawBuffer (GL_BACK);
#endif
}

6
src/OpenGl/OpenGl_Window.hxx
View File

@ -83,12 +83,6 @@ protected:
void EnableFeatures() const;
void DisableFeatures() const;
//! Draw directly to the FRONT buffer. Can cause artifacts on the screen.
void MakeFrontBufCurrent() const;
//! Draw to BACK buffer. Normal and default state.
void MakeBackBufCurrent() const;
protected:
Handle(OpenGl_Context) myGlContext;

651
src/OpenGl/OpenGl_Workspace.cxx
View File

@ -176,7 +176,10 @@ OpenGl_Workspace::OpenGl_Workspace (const Handle(OpenGl_GraphicDriver)& theDrive
PolygonOffset_applied (THE_DEFAULT_POFFSET)
{
myGlContext->core11fwd->glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
myResultFBO = new OpenGl_FrameBuffer();
myMainSceneFbos[0] = new OpenGl_FrameBuffer();
myMainSceneFbos[1] = new OpenGl_FrameBuffer();
myImmediateSceneFbos[0] = new OpenGl_FrameBuffer();
myImmediateSceneFbos[1] = new OpenGl_FrameBuffer();
if (!myGlContext->GetResource ("OpenGl_LineAttributes", myLineAttribs))
{
@ -224,6 +227,16 @@ Standard_Boolean OpenGl_Workspace::SetImmediateModeDrawToFront (const Standard_B
return aPrevMode;
}
inline void nullifyGlResource (Handle(OpenGl_Resource)& theResource,
const Handle(OpenGl_Context)& theCtx)
{
if (!theResource.IsNull())
{
theResource->Release (theCtx.operator->());
theResource.Nullify();
}
}
// =======================================================================
// function : ~OpenGl_Workspace
// purpose :
@ -236,15 +249,12 @@ OpenGl_Workspace::~OpenGl_Workspace()
myGlContext->ReleaseResource ("OpenGl_LineAttributes", Standard_True);
}
if (!myResultFBO.IsNull())
{
myResultFBO->Release (myGlContext.operator->());
myResultFBO.Nullify();
}
if (myFullScreenQuad.IsValid())
{
myFullScreenQuad.Release (myGlContext.operator->());
}
nullifyGlResource (myMainSceneFbos[0], myGlContext);
nullifyGlResource (myMainSceneFbos[1], myGlContext);
nullifyGlResource (myImmediateSceneFbos[0], myGlContext);
nullifyGlResource (myImmediateSceneFbos[1], myGlContext);
myFullScreenQuad.Release (myGlContext.operator->());
}
// =======================================================================
@ -652,6 +662,211 @@ Handle(OpenGl_Texture) OpenGl_Workspace::EnableTexture (const Handle(OpenGl_Text
return aPrevTexture;
}
// =======================================================================
// function : bindDefaultFbo
// purpose :
// =======================================================================
void OpenGl_Workspace::bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo)
{
OpenGl_FrameBuffer* anFbo = (theCustomFbo != NULL && theCustomFbo->IsValid())
? theCustomFbo
: (!myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid()
? myGlContext->DefaultFrameBuffer().operator->()
: NULL);
if (anFbo != NULL)
{
anFbo->BindBuffer (myGlContext);
}
else
{
#if !defined(GL_ES_VERSION_2_0)
myGlContext->SetReadDrawBuffer (GL_BACK);
#else
if (myGlContext->arbFBO != NULL)
{
myGlContext->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
#endif
}
myGlContext->core11fwd->glViewport (0, 0, myWidth, myHeight);
}
// =======================================================================
// function : blitBuffers
// purpose :
// =======================================================================
bool OpenGl_Workspace::blitBuffers (OpenGl_FrameBuffer* theReadFbo,
OpenGl_FrameBuffer* theDrawFbo)
{
if (theReadFbo == NULL)
{
return false;
}
// clear destination before blitting
if (theDrawFbo != NULL
&& theDrawFbo->IsValid())
{
theDrawFbo->BindBuffer (myGlContext);
}
else
{
myGlContext->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
#if !defined(GL_ES_VERSION_2_0)
myGlContext->core20fwd->glClearDepth (1.0);
#else
myGlContext->core20fwd->glClearDepthf (1.0f);
#endif
myGlContext->core20fwd->glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
/*#if !defined(GL_ES_VERSION_2_0)
if (myGlContext->arbFBOBlit != NULL)
{
theReadFbo->BindReadBuffer (myGlContext);
if (theDrawFbo != NULL
&& theDrawFbo->IsValid())
{
theDrawFbo->BindDrawBuffer (myGlContext);
}
else
{
myGlContext->arbFBO->glBindFramebuffer (GL_DRAW_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
// we don't copy stencil buffer here... does it matter for performance?
myGlContext->arbFBOBlit->glBlitFramebuffer (0, 0, theReadFbo->GetVPSizeX(), theReadFbo->GetVPSizeY(),
0, 0, theReadFbo->GetVPSizeX(), theReadFbo->GetVPSizeY(),
GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, GL_NEAREST);
if (theDrawFbo != NULL
&& theDrawFbo->IsValid())
{
theDrawFbo->BindBuffer (myGlContext);
}
else
{
myGlContext->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
}
else
#endif*/
{
myGlContext->core20fwd->glDepthFunc (GL_ALWAYS);
myGlContext->core20fwd->glDepthMask (GL_TRUE);
myGlContext->core20fwd->glEnable (GL_DEPTH_TEST);
DisableTexture();
if (!myFullScreenQuad.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)
};
myFullScreenQuad.Init (myGlContext, 4, 4, aQuad[0].GetData());
}
const Handle(OpenGl_ShaderManager)& aManager = myGlContext->ShaderManager();
if (myFullScreenQuad.IsValid()
&& aManager->BindFboBlitProgram())
{
theReadFbo->ColorTexture() ->Bind (myGlContext, GL_TEXTURE0 + 0);
theReadFbo->DepthStencilTexture()->Bind (myGlContext, GL_TEXTURE0 + 1);
myFullScreenQuad.BindVertexAttrib (myGlContext, 0);
myGlContext->core20fwd->glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
myFullScreenQuad.UnbindVertexAttrib (myGlContext, 0);
theReadFbo->DepthStencilTexture()->Unbind (myGlContext, GL_TEXTURE0 + 1);
theReadFbo->ColorTexture() ->Unbind (myGlContext, GL_TEXTURE0 + 0);
}
else
{
TCollection_ExtendedString aMsg = TCollection_ExtendedString()
+ "Error! FBO blitting has failed";
myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
GL_DEBUG_TYPE_ERROR_ARB,
0,
GL_DEBUG_SEVERITY_HIGH_ARB,
aMsg);
myHasFboBlit = Standard_False;
theReadFbo->Release (myGlContext.operator->());
return true;
}
}
return true;
}
// =======================================================================
// function : drawStereoPair
// purpose :
// =======================================================================
void OpenGl_Workspace::drawStereoPair()
{
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)
{
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;
}
myGlContext->core20fwd->glDepthFunc (GL_ALWAYS);
myGlContext->core20fwd->glDepthMask (GL_TRUE);
myGlContext->core20fwd->glEnable (GL_DEPTH_TEST);
DisableTexture();
if (!myFullScreenQuad.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)
};
myFullScreenQuad.Init (myGlContext, 4, 4, aQuad[0].GetData());
}
const Handle(OpenGl_ShaderManager)& aManager = myGlContext->ShaderManager();
if (myFullScreenQuad.IsValid()
&& aManager->BindAnaglyphProgram())
{
aPair[0]->ColorTexture()->Bind (myGlContext, GL_TEXTURE0 + 0);
aPair[1]->ColorTexture()->Bind (myGlContext, GL_TEXTURE0 + 1);
myFullScreenQuad.BindVertexAttrib (myGlContext, 0);
myGlContext->core20fwd->glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
myFullScreenQuad.UnbindVertexAttrib (myGlContext, 0);
aPair[1]->ColorTexture()->Unbind (myGlContext, GL_TEXTURE0 + 1);
aPair[0]->ColorTexture()->Unbind (myGlContext, GL_TEXTURE0 + 0);
}
else
{
TCollection_ExtendedString aMsg = TCollection_ExtendedString()
+ "Error! Anaglyph has failed";
myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
GL_DEBUG_TYPE_ERROR_ARB,
0,
GL_DEBUG_SEVERITY_HIGH_ARB,
aMsg);
}
}
// =======================================================================
// function : Redraw
// purpose :
@ -675,14 +890,6 @@ void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
myGlContext->FetchState();
OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
if (aFrameBuffer != NULL)
{
aFrameBuffer->SetupViewport (myGlContext);
}
else
{
myGlContext->core11fwd->glViewport (0, 0, myWidth, myHeight);
}
bool toSwap = myGlContext->IsRender()
&& !myGlContext->caps->buffersNoSwap
&& aFrameBuffer == NULL;
@ -690,60 +897,135 @@ void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
Standard_Integer aSizeX = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeX() : myWidth;
Standard_Integer aSizeY = aFrameBuffer != NULL ? aFrameBuffer->GetVPSizeY() : myHeight;
if (!myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid())
if ( aFrameBuffer == NULL
&& !myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid())
{
myGlContext->DefaultFrameBuffer()->BindBuffer (myGlContext);
aFrameBuffer = myGlContext->DefaultFrameBuffer().operator->();
}
if (myHasFboBlit
&& myTransientDrawToFront)
{
if (myResultFBO->GetVPSizeX() != aSizeX
|| myResultFBO->GetVPSizeY() != aSizeY)
if (myMainSceneFbos[0]->GetVPSizeX() != aSizeX
|| myMainSceneFbos[0]->GetVPSizeY() != aSizeY)
{
// prepare FBOs containing main scene
// for further blitting and rendering immediate presentations on top
if (myGlContext->core20fwd != NULL)
{
myResultFBO->Init (myGlContext, aSizeX, aSizeY);
myMainSceneFbos[0]->Init (myGlContext, aSizeX, aSizeY);
}
}
if (myResultFBO->IsValid())
{
myResultFBO->SetupViewport (myGlContext);
}
}
else
{
myResultFBO->Release (myGlContext.operator->());
myResultFBO->ChangeViewport (0, 0);
myMainSceneFbos [0]->Release (myGlContext.operator->());
myMainSceneFbos [1]->Release (myGlContext.operator->());
myImmediateSceneFbos[0]->Release (myGlContext.operator->());
myImmediateSceneFbos[1]->Release (myGlContext.operator->());
myMainSceneFbos [0]->ChangeViewport (0, 0);
myMainSceneFbos [1]->ChangeViewport (0, 0);
myImmediateSceneFbos[0]->ChangeViewport (0, 0);
myImmediateSceneFbos[1]->ChangeViewport (0, 0);
}
// draw entire frame using normal OpenGL pipeline
if (myResultFBO->IsValid())
const Handle(Graphic3d_Camera)& aCamera = myView->Camera();
Graphic3d_Camera::Projection aProjectType = aCamera->ProjectionType();
if (aProjectType == Graphic3d_Camera::Projection_Stereo)
{
myResultFBO->BindBuffer (myGlContext);
}
else if (aFrameBuffer != NULL)
{
aFrameBuffer->BindBuffer (myGlContext);
if (aFrameBuffer != NULL
|| !myGlContext->IsRender())
{
// implicitly switch to mono camera for image dump
aProjectType = Graphic3d_Camera::Projection_Perspective;
}
else if (myMainSceneFbos[0]->IsValid())
{
myMainSceneFbos[1]->InitLazy (myGlContext, aSizeX, aSizeY);
if (!myMainSceneFbos[1]->IsValid())
{
// no enough memory?
aProjectType = Graphic3d_Camera::Projection_Perspective;
}
else if (!myGlContext->HasStereoBuffers())
{
myImmediateSceneFbos[0]->InitLazy (myGlContext, aSizeX, aSizeY);
myImmediateSceneFbos[1]->InitLazy (myGlContext, aSizeX, aSizeY);
if (!myImmediateSceneFbos[0]->IsValid()
|| !myImmediateSceneFbos[1]->IsValid())
{
aProjectType = Graphic3d_Camera::Projection_Perspective;
}
}
}
}
redraw1 (theCView, theCUnderLayer, theCOverLayer);
myBackBufferRestored = Standard_True;
myIsImmediateDrawn = Standard_False;
if (!redrawImmediate (theCView, theCOverLayer, theCUnderLayer, aFrameBuffer))
if (aProjectType == Graphic3d_Camera::Projection_Stereo)
{
toSwap = false;
}
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
};
if (aFrameBuffer != NULL)
#if !defined(GL_ES_VERSION_2_0)
myGlContext->SetReadDrawBuffer (GL_BACK_LEFT);
#endif
redraw1 (theCView, theCUnderLayer, theCOverLayer,
aMainFbos[0], Graphic3d_Camera::Projection_MonoLeftEye);
myBackBufferRestored = Standard_True;
myIsImmediateDrawn = Standard_False;
#if !defined(GL_ES_VERSION_2_0)
myGlContext->SetReadDrawBuffer (GL_BACK_LEFT);
#endif
if (!redrawImmediate (theCView, theCOverLayer, theCUnderLayer, aMainFbos[0], aProjectType, anImmFbos[0]))
{
toSwap = false;
}
#if !defined(GL_ES_VERSION_2_0)
myGlContext->SetReadDrawBuffer (GL_BACK_RIGHT);
#endif
redraw1 (theCView, theCUnderLayer, theCOverLayer,
aMainFbos[1], Graphic3d_Camera::Projection_MonoRightEye);
myBackBufferRestored = Standard_True;
myIsImmediateDrawn = Standard_False;
if (!redrawImmediate (theCView, theCOverLayer, theCUnderLayer, aMainFbos[1], aProjectType, anImmFbos[1]))
{
toSwap = false;
}
if (anImmFbos[0] != NULL)
{
bindDefaultFbo (aFrameBuffer);
drawStereoPair();
}
}
else
{
aFrameBuffer->UnbindBuffer (myGlContext);
// move back original viewport
myGlContext->core11fwd->glViewport (0, 0, myWidth, myHeight);
OpenGl_FrameBuffer* aMainFbo = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL;
#if !defined(GL_ES_VERSION_2_0)
if (aMainFbo == NULL
&& aFrameBuffer == NULL)
{
myGlContext->SetReadDrawBuffer (GL_BACK);
}
#endif
redraw1 (theCView, theCUnderLayer, theCOverLayer,
aMainFbo != NULL ? aMainFbo : aFrameBuffer, aProjectType);
myBackBufferRestored = Standard_True;
myIsImmediateDrawn = Standard_False;
if (!redrawImmediate (theCView, theCOverLayer, theCUnderLayer, aMainFbo, aProjectType, aFrameBuffer))
{
toSwap = false;
}
}
#if defined(_WIN32) && defined(HAVE_VIDEOCAPTURE)
@ -764,11 +1046,14 @@ void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
}
#endif
// bind default FBO
bindDefaultFbo();
// Swap the buffers
if (toSwap)
{
GetGlContext()->SwapBuffers();
if (!myResultFBO->IsValid())
if (!myMainSceneFbos[0]->IsValid())
{
myBackBufferRestored = Standard_False;
}
@ -786,15 +1071,27 @@ void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
// function : redraw1
// purpose :
// =======================================================================
void OpenGl_Workspace::redraw1 (const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer)
void OpenGl_Workspace::redraw1 (const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer,
OpenGl_FrameBuffer* theReadDrawFbo,
const Graphic3d_Camera::Projection theProjection)
{
if (myView.IsNull())
{
return;
}
if (theReadDrawFbo != NULL)
{
theReadDrawFbo->BindBuffer (myGlContext);
theReadDrawFbo->SetupViewport (myGlContext);
}
else
{
myGlContext->core11fwd->glViewport (0, 0, myWidth, myHeight);
}
// request reset of material
NamedStatus |= OPENGL_NS_RESMAT;
@ -838,7 +1135,7 @@ void OpenGl_Workspace::redraw1 (const Graphic3d_CView& theCView,
glClear (toClear);
Handle(OpenGl_Workspace) aWS (this);
myView->Render (myPrintContext, aWS, theCView, theCUnderLayer, theCOverLayer, Standard_False);
myView->Render (myPrintContext, aWS, theReadDrawFbo, theProjection, theCView, theCUnderLayer, theCOverLayer, Standard_False);
}
// =======================================================================
@ -864,8 +1161,27 @@ void OpenGl_Workspace::copyBackToFront()
DisableFeatures();
glDrawBuffer (GL_FRONT);
glReadBuffer (GL_BACK);
switch (myGlContext->DrawBuffer())
{
case GL_BACK_LEFT:
{
myGlContext->SetReadBuffer (GL_BACK_LEFT);
myGlContext->SetDrawBuffer (GL_FRONT_LEFT);
break;
}
case GL_BACK_RIGHT:
{
myGlContext->SetReadBuffer (GL_BACK_RIGHT);
myGlContext->SetDrawBuffer (GL_FRONT_RIGHT);
break;
}
default:
{
myGlContext->SetReadBuffer (GL_BACK);
myGlContext->SetDrawBuffer (GL_FRONT);
break;
}
}
glRasterPos2i (0, 0);
glCopyPixels (0, 0, myWidth + 1, myHeight + 1, GL_COLOR);
@ -876,8 +1192,9 @@ void OpenGl_Workspace::copyBackToFront()
myGlContext->WorldViewState.Pop();
myGlContext->ProjectionState.Pop();
myGlContext->ApplyProjectionMatrix();
glDrawBuffer (GL_BACK);
// read/write from front buffer now
myGlContext->SetReadBuffer (myGlContext->DrawBuffer());
#endif
myIsImmediateDrawn = Standard_False;
}
@ -911,9 +1228,33 @@ void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer)
{
const Handle(Graphic3d_Camera)& aCamera = myView->Camera();
Graphic3d_Camera::Projection aProjectType = aCamera->ProjectionType();
OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
if ( aFrameBuffer == NULL
&& !myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid())
{
aFrameBuffer = myGlContext->DefaultFrameBuffer().operator->();
}
if (aProjectType == Graphic3d_Camera::Projection_Stereo)
{
if (aFrameBuffer != NULL)
{
// implicitly switch to mono camera for image dump
aProjectType = Graphic3d_Camera::Projection_Perspective;
}
else if (myMainSceneFbos[0]->IsValid()
&& !myMainSceneFbos[1]->IsValid())
{
aProjectType = Graphic3d_Camera::Projection_Perspective;
}
}
if (!myTransientDrawToFront
|| !myBackBufferRestored
|| (myGlContext->caps->buffersNoSwap && !myResultFBO->IsValid()))
|| (myGlContext->caps->buffersNoSwap && !myMainSceneFbos[0]->IsValid()))
{
Redraw (theCView, theCUnderLayer, theCOverLayer);
return;
@ -923,13 +1264,77 @@ void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
return;
}
if (!myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid())
bool toSwap = false;
if (aProjectType == Graphic3d_Camera::Projection_Stereo)
{
myGlContext->DefaultFrameBuffer()->BindBuffer (myGlContext);
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
};
if (myGlContext->arbFBO != NULL)
{
myGlContext->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
#if !defined(GL_ES_VERSION_2_0)
if (anImmFbos[0] == NULL)
{
myGlContext->SetReadDrawBuffer (GL_BACK_LEFT);
}
#endif
toSwap = redrawImmediate (theCView, theCUnderLayer, theCOverLayer,
aMainFbos[0],
Graphic3d_Camera::Projection_MonoLeftEye,
anImmFbos[0],
Standard_True) || toSwap;
if (myGlContext->arbFBO != NULL)
{
myGlContext->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
#if !defined(GL_ES_VERSION_2_0)
if (anImmFbos[1] == NULL)
{
myGlContext->SetReadDrawBuffer (GL_BACK_RIGHT);
}
#endif
toSwap = redrawImmediate (theCView, theCUnderLayer, theCOverLayer,
aMainFbos[1],
Graphic3d_Camera::Projection_MonoRightEye,
anImmFbos[1],
Standard_True) || toSwap;
if (anImmFbos[0] != NULL)
{
bindDefaultFbo (aFrameBuffer);
drawStereoPair();
}
}
else
{
OpenGl_FrameBuffer* aMainFbo = myMainSceneFbos[0]->IsValid() ? myMainSceneFbos[0].operator->() : NULL;
#if !defined(GL_ES_VERSION_2_0)
if (aMainFbo == NULL)
{
myGlContext->SetReadDrawBuffer (GL_BACK);
}
#endif
toSwap = redrawImmediate (theCView, theCUnderLayer, theCOverLayer,
aMainFbo,
aProjectType,
aFrameBuffer,
Standard_True) || toSwap;
}
if (redrawImmediate (theCView, theCUnderLayer, theCOverLayer, NULL, Standard_True)
// bind default FBO
bindDefaultFbo();
if (toSwap
&& !myGlContext->caps->buffersNoSwap)
{
myGlContext->SwapBuffers();
@ -937,7 +1342,6 @@ void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
else
{
myGlContext->core11fwd->glFlush();
MakeBackBufCurrent();
}
}
@ -948,7 +1352,9 @@ void OpenGl_Workspace::RedrawImmediate (const Graphic3d_CView& theCView,
bool OpenGl_Workspace::redrawImmediate (const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer,
OpenGl_FrameBuffer* theTargetFBO,
OpenGl_FrameBuffer* theReadFbo,
const Graphic3d_Camera::Projection theProjection,
OpenGl_FrameBuffer* theDrawFbo,
const Standard_Boolean theIsPartialUpdate)
{
GLboolean toCopyBackToFront = GL_FALSE;
@ -956,116 +1362,16 @@ bool OpenGl_Workspace::redrawImmediate (const Graphic3d_CView& theCView,
{
myBackBufferRestored = Standard_False;
}
else if (myResultFBO->IsValid()
else if (theReadFbo != NULL
&& theReadFbo->IsValid()
&& myGlContext->IsRender())
{
// clear destination before blitting
if (theTargetFBO != NULL)
if (!blitBuffers (theReadFbo, theDrawFbo))
{
theTargetFBO->BindBuffer (myGlContext);
}
else if (!myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid())
{
myGlContext->DefaultFrameBuffer()->BindBuffer (myGlContext);
}
else
{
myGlContext->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
#if !defined(GL_ES_VERSION_2_0)
myGlContext->core20fwd->glClearDepth (1.0);
#else
myGlContext->core20fwd->glClearDepthf (1.0f);
#endif
myGlContext->core20fwd->glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
/*#if !defined(GL_ES_VERSION_2_0)
if (myGlContext->arbFBOBlit != NULL)
{
myResultFBO->BindReadBuffer (myGlContext);
if (theTargetFBO != NULL)
{
theTargetFBO->BindDrawBuffer (myGlContext);
}
else if (!myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid())
{
myGlContext->DefaultFrameBuffer()->BindDrawBuffer (myGlContext);
}
else
{
myGlContext->arbFBO->glBindFramebuffer (GL_DRAW_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
// we don't copy stencil buffer here... does it matter for performance?
myGlContext->arbFBOBlit->glBlitFramebuffer (0, 0, myResultFBO->GetVPSizeX(), myResultFBO->GetVPSizeY(),
0, 0, myResultFBO->GetVPSizeX(), myResultFBO->GetVPSizeY(),
GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, GL_NEAREST);
if (theTargetFBO != NULL)
{
theTargetFBO->BindBuffer (myGlContext);
}
else if (!myGlContext->DefaultFrameBuffer().IsNull()
&& myGlContext->DefaultFrameBuffer()->IsValid())
{
myGlContext->DefaultFrameBuffer()->BindBuffer (myGlContext);
}
else
{
myGlContext->arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
}
else
#endif*/
{
myGlContext->core20fwd->glDepthFunc (GL_ALWAYS);
myGlContext->core20fwd->glDepthMask (GL_TRUE);
myGlContext->core20fwd->glEnable (GL_DEPTH_TEST);
DisableTexture();
if (!myFullScreenQuad.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)
};
myFullScreenQuad.Init (myGlContext, 4, 4, aQuad[0].GetData());
}
const Handle(OpenGl_ShaderManager)& aManager = myGlContext->ShaderManager();
if (myFullScreenQuad.IsValid()
&& aManager->BindFboBlitProgram())
{
myResultFBO->ColorTexture() ->Bind (myGlContext, GL_TEXTURE0 + 0);
myResultFBO->DepthStencilTexture()->Bind (myGlContext, GL_TEXTURE0 + 1);
myFullScreenQuad.BindVertexAttrib (myGlContext, 0);
myGlContext->core20fwd->glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
myFullScreenQuad.UnbindVertexAttrib (myGlContext, 0);
myResultFBO->DepthStencilTexture()->Unbind (myGlContext, GL_TEXTURE0 + 1);
myResultFBO->ColorTexture() ->Unbind (myGlContext, GL_TEXTURE0 + 0);
}
else
{
TCollection_ExtendedString aMsg = TCollection_ExtendedString()
+ "Error! FBO blitting has failed";
myGlContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION_ARB,
GL_DEBUG_TYPE_ERROR_ARB,
0,
GL_DEBUG_SEVERITY_HIGH_ARB,
aMsg);
myHasFboBlit = Standard_False;
myResultFBO->Release (myGlContext.operator->());
return true;
}
return true;
}
}
else if (theTargetFBO == NULL)
else if (theDrawFbo == NULL)
{
#if !defined(GL_ES_VERSION_2_0)
myGlContext->core11fwd->glGetBooleanv (GL_DOUBLEBUFFER, &toCopyBackToFront);
@ -1079,7 +1385,6 @@ bool OpenGl_Workspace::redrawImmediate (const Graphic3d_CView& theCView,
return true;
}
copyBackToFront();
MakeFrontBufCurrent();
}
else
{
@ -1118,7 +1423,8 @@ bool OpenGl_Workspace::redrawImmediate (const Graphic3d_CView& theCView,
glDisable (GL_DEPTH_TEST);
}
myView->Render (myPrintContext, aWS, theCView, theCUnderLayer, theCOverLayer, Standard_True);
myView->Render (myPrintContext, aWS, theDrawFbo, theProjection,
theCView, theCUnderLayer, theCOverLayer, Standard_True);
if (!myView->ImmediateStructures().IsEmpty())
{
glDisable (GL_DEPTH_TEST);
@ -1135,12 +1441,7 @@ bool OpenGl_Workspace::redrawImmediate (const Graphic3d_CView& theCView,
aStructure->Render (aWS);
}
if (toCopyBackToFront)
{
MakeBackBufCurrent();
return false;
}
return true;
return !toCopyBackToFront;
}
IMPLEMENT_STANDARD_HANDLE (OpenGl_RaytraceFilter, OpenGl_RenderFilter)

38
src/OpenGl/OpenGl_Workspace.hxx
View File

@ -265,22 +265,31 @@ public:
//! @return true if clipping algorithm enabled
inline Standard_Boolean IsCullingEnabled() const { return myIsCullingEnabled; }
//! Returns framebuffer storing cached main presentation of the view.
const Handle(OpenGl_FrameBuffer)& ResultFBO() const { return myResultFBO; }
protected:
//! Copy content of Back buffer to the Front buffer
void copyBackToFront();
//! Blit image from/to specified buffers.
bool blitBuffers (OpenGl_FrameBuffer* theReadFbo,
OpenGl_FrameBuffer* theDrawFbo);
virtual Standard_Boolean Activate();
void redraw1 (const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer);
void redraw1 (const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer,
OpenGl_FrameBuffer* theReadDrawFbo,
const Graphic3d_Camera::Projection theProjection);
//! Blit snapshot containing main scene (myResultFBO or BackBuffer)
//! into presentation buffer (myResultFBO->offscreen FBO or myResultFBO->BackBuffer or BackBuffer->FrontBuffer),
//! Setup default FBO.
void bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo = NULL);
//! Blend together views pair into stereo image.
void drawStereoPair();
//! Blit snapshot containing main scene (myMainSceneFbos or BackBuffer)
//! into presentation buffer (myMainSceneFbos -> offscreen FBO or myMainSceneFbos -> BackBuffer or BackBuffer -> FrontBuffer),
//! and redraw immediate structures on top.
//!
//! When scene caching is disabled (myTransientDrawToFront, no double buffer in window, etc.),
@ -290,7 +299,9 @@ protected:
bool redrawImmediate (const Graphic3d_CView& theCView,
const Aspect_CLayer2d& theCUnderLayer,
const Aspect_CLayer2d& theCOverLayer,
OpenGl_FrameBuffer* theTargetFBO,
OpenGl_FrameBuffer* theReadFbo,
const Graphic3d_Camera::Projection theProjection,
OpenGl_FrameBuffer* theDrawFbo,
const Standard_Boolean theIsPartialUpdate = Standard_False);
void updateMaterial (const int theFlag);
@ -300,9 +311,12 @@ protected:
protected: //! @name protected fields
//! Framebuffer stores cached main presentation of the view (without presentation of immediate layers).
Handle(OpenGl_FrameBuffer) myResultFBO;
//! Special flag which is invalidated when myResultFBO can not be blitted for some reason (e.g. driver bugs).
//! Two framebuffers (left and right views) store cached main presentation
//! of the view (without presentation of immediate layers).
Handle(OpenGl_FrameBuffer) myMainSceneFbos[2];
//! Additional buffers for immediate layer in stereo mode.
Handle(OpenGl_FrameBuffer) myImmediateSceneFbos[2];
//! Special flag which is invalidated when myMainSceneFbos can not be blitted for some reason (e.g. driver bugs).
Standard_Boolean myHasFboBlit;
//! Vertices for full-screen quad rendering.

17
src/OpenGl/OpenGl_Workspace_2.cxx
View File

@ -550,9 +550,6 @@ Standard_Boolean OpenGl_Workspace::Print
}
}
// activate the offscreen buffer
aFrameBuffer->BindBuffer (GetGlContext());
// calculate offset for centered printing
int aDevOffx = (int)(devWidth - width) /2;
int aDevOffy = (int)(devHeight - height)/2;
@ -564,18 +561,21 @@ Standard_Boolean OpenGl_Workspace::Print
if (!showBackground)
NamedStatus |= OPENGL_NS_WHITEBACK;
// switch to mono camera for image dump
const Graphic3d_Camera::Projection aProjectType = myView->Camera()->ProjectionType() != Graphic3d_Camera::Projection_Stereo
? myView->Camera()->ProjectionType()
: Graphic3d_Camera::Projection_Perspective;
if (!IsTiling)
{
myPrintContext->SetScale ((GLfloat )aFrameWidth /viewWidth,
(GLfloat )aFrameHeight/viewHeight);
aFrameBuffer->SetupViewport (GetGlContext());
redraw1 (ACView, ACUnderLayer, ACOverLayer);
redraw1 (ACView, ACUnderLayer, ACOverLayer, aFrameBuffer, aProjectType);
if (!myTransientDrawToFront)
{
// render to FBO only if allowed to render to back buffer
myBackBufferRestored = Standard_True;
myIsImmediateDrawn = Standard_False;
redrawImmediate (ACView, ACUnderLayer, ACOverLayer, aFrameBuffer);
redrawImmediate (ACView, ACUnderLayer, ACOverLayer, NULL, aProjectType, aFrameBuffer);
myBackBufferRestored = Standard_False;
myIsImmediateDrawn = Standard_False;
}
@ -683,14 +683,13 @@ Standard_Boolean OpenGl_Workspace::Print
aFrameHeight;
// draw to the offscreen buffer and capture the result
aFrameBuffer->SetupViewport (GetGlContext());
redraw1 (ACView, ACUnderLayer, ACOverLayer);
redraw1 (ACView, ACUnderLayer, ACOverLayer, aFrameBuffer, aProjectType);
if (!myTransientDrawToFront)
{
// render to FBO only if forces to render to back buffer
myBackBufferRestored = Standard_True;
myIsImmediateDrawn = Standard_False;
redrawImmediate (ACView, ACUnderLayer, ACOverLayer, aFrameBuffer);
redrawImmediate (ACView, ACUnderLayer, ACOverLayer, NULL, aProjectType, aFrameBuffer);
myBackBufferRestored = Standard_False;
myIsImmediateDrawn = Standard_False;
}