aw079: #i107500# changed 3D renderer to be able to render overlapping transparent parts from back to front (Z-sorted)

6 files changed, 320 insertions, 177 deletions

diff --git a/drawinglayer/inc/drawinglayer/processor3d/defaultprocessor3d.hxx b/drawinglayer/inc/drawinglayer/processor3d/defaultprocessor3d.hxx
index a91238435d..e1dde72111 100644
--- a/drawinglayer/inc/drawinglayer/processor3d/defaultprocessor3d.hxx
+++ b/drawinglayer/inc/drawinglayer/processor3d/defaultprocessor3d.hxx
@@ -41,6 +41,7 @@
 #include <basegfx/range/b2drange.hxx>
 #include <basegfx/color/bcolormodifier.hxx>
 #include <svtools/optionsdrawinglayer.hxx>
+#include <boost/shared_ptr.hpp>
 
 //////////////////////////////////////////////////////////////////////////////
 // predefines
@@ -90,14 +91,17 @@ namespace drawinglayer
             basegfx::BColorModifierStack						maBColorModifierStack;
 
             // the current active texture
-            texture::GeoTexSvx*									mpGeoTexSvx;
+            boost::shared_ptr< texture::GeoTexSvx >				mpGeoTexSvx;
 
             // the current active transparence texture
-            texture::GeoTexSvx*									mpTransparenceGeoTexSvx;
+            boost::shared_ptr< texture::GeoTexSvx >				mpTransparenceGeoTexSvx;
 
             // SvtOptionsDrawinglayer incarnation to react on diverse settings
             const SvtOptionsDrawinglayer						maDrawinglayerOpt;
 
+            // counter for entered transparence textures
+            sal_uInt32                                          mnTransparenceCounter;
+
             // bitfield
             unsigned											mbModulate : 1;
             unsigned											mbFilter : 1;
@@ -135,8 +139,9 @@ namespace drawinglayer
             
             // data read access renderer stuff
             const basegfx::BColorModifierStack& getBColorModifierStack() const { return maBColorModifierStack; }
-            const texture::GeoTexSvx* getGeoTexSvx() const { return mpGeoTexSvx; }
-            const texture::GeoTexSvx* getTransparenceGeoTexSvx() const { return mpTransparenceGeoTexSvx; }
+            const boost::shared_ptr< texture::GeoTexSvx >& getGeoTexSvx() const { return mpGeoTexSvx; }
+            const boost::shared_ptr< texture::GeoTexSvx >& getTransparenceGeoTexSvx() const { return mpTransparenceGeoTexSvx; }
+            sal_uInt32 getTransparenceCounter() const { return mnTransparenceCounter; }
             bool getModulate() const { return mbModulate; }
             bool getFilter() const { return mbFilter; }
             bool getSimpleTextureActive() const { return mbSimpleTextureActive; }
diff --git a/drawinglayer/inc/drawinglayer/processor3d/zbufferprocessor3d.hxx b/drawinglayer/inc/drawinglayer/processor3d/zbufferprocessor3d.hxx
index 0f57556549..d741dabde9 100644
--- a/drawinglayer/inc/drawinglayer/processor3d/zbufferprocessor3d.hxx
+++ b/drawinglayer/inc/drawinglayer/processor3d/zbufferprocessor3d.hxx
@@ -58,6 +58,7 @@ namespace drawinglayer {
 }
 
 class ZBufferRasterConverter3D;
+class RasterPrimitive3D;
 
 //////////////////////////////////////////////////////////////////////////////
 
@@ -81,21 +82,15 @@ namespace drawinglayer
             // will switch it off while e.g. 2 will use 2x2 pixels for each pixel to create
             sal_uInt16											mnAntiAlialize;
 
-            // bitfield
-            // a combination of bools to allow two-pass rendering to render
-            // the transparent parts in the 2nd run (if any) as needed for Z-Buffer
-            unsigned											mbProcessTransparent : 1;
-            unsigned											mbContainsTransparent : 1;
-
+            // remembered RasterPrimitive3D's which need to be painted back to front
+            // for transparent 3D parts
+            std::vector< RasterPrimitive3D >*                   mpRasterPrimitive3Ds;
 
             //////////////////////////////////////////////////////////////////////////////
             // rasterconversions for filled and non-filled polygons
             virtual void rasterconvertB3DPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolygon& rHairline) const;
             virtual void rasterconvertB3DPolyPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolyPolygon& rFill) const;
 
-            // the processing method for a single, known primitive
-            virtual void processBasePrimitive3D(const primitive3d::BasePrimitive3D& rBasePrimitive);
-
         public:
             ZBufferProcessor3D(
                 const geometry::ViewInformation3D& rViewInformation3D,
@@ -108,12 +103,7 @@ namespace drawinglayer
                 sal_uInt16 nAntiAlialize);
             virtual ~ZBufferProcessor3D();
 
-            // helpers for drawing transparent parts in 2nd run. To use this
-            // processor, call processNonTransparent and then processTransparent
-            // with the same primitives. The 2nd call will only do something,
-            // when transparent parts are contained
-            void processNonTransparent(const primitive3d::Primitive3DSequence& rSource);
-            void processTransparent(const primitive3d::Primitive3DSequence& rSource);
+            void finish();
 
             // get the result as bitmapEx
             BitmapEx getBitmapEx() const;
diff --git a/drawinglayer/source/primitive2d/sceneprimitive2d.cxx b/drawinglayer/source/primitive2d/sceneprimitive2d.cxx
index acf3307bbf..0db498b34e 100644
--- a/drawinglayer/source/primitive2d/sceneprimitive2d.cxx
+++ b/drawinglayer/source/primitive2d/sceneprimitive2d.cxx
@@ -235,8 +235,9 @@ namespace drawinglayer
                     aUnitVisibleRange,
                     nOversampleValue);
 
-                aZBufferProcessor3D.processNonTransparent(getChildren3D());
-                aZBufferProcessor3D.processTransparent(getChildren3D());
+                aZBufferProcessor3D.process(getChildren3D());
+                aZBufferProcessor3D.finish();
+
                 const_cast< ScenePrimitive2D* >(this)->maOldRenderedBitmap = aZBufferProcessor3D.getBitmapEx();
                 const Size aBitmapSizePixel(maOldRenderedBitmap.GetSizePixel());
 
diff --git a/drawinglayer/source/processor2d/vclprocessor2d.cxx b/drawinglayer/source/processor2d/vclprocessor2d.cxx
index 625a26797e..fddde4d692 100644
--- a/drawinglayer/source/processor2d/vclprocessor2d.cxx
+++ b/drawinglayer/source/processor2d/vclprocessor2d.cxx
@@ -337,17 +337,69 @@ namespace drawinglayer
             basegfx::B2DPolygon aLocalPolygon(rPolygonCandidate.getB2DPolygon());
             aLocalPolygon.transform(maCurrentTransformation);
 
-            if(bPixelBased && getOptionsDrawinglayer().IsAntiAliasing() && getOptionsDrawinglayer().IsSnapHorVerLinesToDiscrete())
+            static bool bCheckTrapezoidDecomposition(false);
+            static bool bShowOutlinesThere(false);
+            if(bCheckTrapezoidDecomposition)
             {
-                // #i98289#
-                // when a Hairline is painted and AntiAliasing is on the option SnapHorVerLinesToDiscrete
-                // allows to suppress AntiAliasing for pure horizontal or vertical lines. This is done since
-                // not-AntiAliased such lines look more pleasing to the eye (e.g. 2D chart content). This
-                // NEEDS to be done in discrete coordinates, so only useful for pixel based rendering.
-                aLocalPolygon = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aLocalPolygon);
+                // clip against discrete ViewPort
+                const basegfx::B2DRange& rDiscreteViewport = getViewInformation2D().getDiscreteViewport();
+                basegfx::B2DPolyPolygon aLocalPolyPolygon(basegfx::tools::clipPolygonOnRange(
+                    aLocalPolygon, rDiscreteViewport, true, false));
+                
+                if(aLocalPolyPolygon.count())
+                {
+                    // subdivide
+                    aLocalPolyPolygon = basegfx::tools::adaptiveSubdivideByDistance(
+                        aLocalPolyPolygon, 0.5);
+
+                    // trapezoidize
+                    static double fLineWidth(2.0);
+                    basegfx::B2DTrapezoidVector aB2DTrapezoidVector;
+                    basegfx::tools::createLineTrapezoidFromB2DPolyPolygon(aB2DTrapezoidVector, aLocalPolyPolygon, fLineWidth);
+
+                    const sal_uInt32 nCount(aB2DTrapezoidVector.size());
+
+                    if(nCount)
+                    {
+                        basegfx::BColor aInvPolygonColor(aHairlineColor);
+                        aInvPolygonColor.invert();
+
+                        for(sal_uInt32 a(0); a < nCount; a++)
+                        {
+                            const basegfx::B2DPolygon aTempPolygon(aB2DTrapezoidVector[a].getB2DPolygon());
+                            
+                            if(bShowOutlinesThere)
+                            {
+                                mpOutputDevice->SetFillColor(Color(aHairlineColor));
+                                mpOutputDevice->SetLineColor();
+                            }
+
+                            mpOutputDevice->DrawPolygon(aTempPolygon);
+
+                            if(bShowOutlinesThere)
+                            {
+                                mpOutputDevice->SetFillColor();
+                                mpOutputDevice->SetLineColor(Color(aInvPolygonColor));
+                                mpOutputDevice->DrawPolyLine(aTempPolygon, 0.0);
+                            }
+                        }
+                    }
+                }
             }
+            else
+            {
+                if(bPixelBased && getOptionsDrawinglayer().IsAntiAliasing() && getOptionsDrawinglayer().IsSnapHorVerLinesToDiscrete())
+                {
+                    // #i98289#
+                    // when a Hairline is painted and AntiAliasing is on the option SnapHorVerLinesToDiscrete
+                    // allows to suppress AntiAliasing for pure horizontal or vertical lines. This is done since
+                    // not-AntiAliased such lines look more pleasing to the eye (e.g. 2D chart content). This
+                    // NEEDS to be done in discrete coordinates, so only useful for pixel based rendering.
+                    aLocalPolygon = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aLocalPolygon);
+                }
 
-            mpOutputDevice->DrawPolyLine(aLocalPolygon, 0.0);
+                mpOutputDevice->DrawPolyLine(aLocalPolygon, 0.0);
+            }
         }
 
         // direct draw of transformed BitmapEx primitive
@@ -684,8 +736,8 @@ namespace drawinglayer
                         aLocalPolyPolygon, 0.5);
 
                     // trapezoidize
-                    const basegfx::B2DTrapezoidVector aB2DTrapezoidVector(basegfx::tools::trapezoidSubdivide(
-                        aLocalPolyPolygon));
+                    basegfx::B2DTrapezoidVector aB2DTrapezoidVector;
+                    basegfx::tools::trapezoidSubdivide(aB2DTrapezoidVector, aLocalPolyPolygon);
 
                     const sal_uInt32 nCount(aB2DTrapezoidVector.size());
 
diff --git a/drawinglayer/source/processor3d/defaultprocessor3d.cxx b/drawinglayer/source/processor3d/defaultprocessor3d.cxx
index 33a2e1639f..a6fef12176 100644
--- a/drawinglayer/source/processor3d/defaultprocessor3d.cxx
+++ b/drawinglayer/source/processor3d/defaultprocessor3d.cxx
@@ -71,8 +71,8 @@ namespace drawinglayer
                 // rescue values
                 const bool bOldModulate(getModulate()); mbModulate = rPrimitive.getModulate();
                 const bool bOldFilter(getFilter()); mbFilter = rPrimitive.getFilter();
-                const bool bOldSimpleTextureActive(mbSimpleTextureActive);
-                texture::GeoTexSvx* pOldTex = (bTransparence) ? mpTransparenceGeoTexSvx : mpGeoTexSvx;
+                const bool bOldSimpleTextureActive(getSimpleTextureActive());
+                boost::shared_ptr< texture::GeoTexSvx > pOldTex = (bTransparence) ? mpTransparenceGeoTexSvx : mpGeoTexSvx;
 
                 // create texture
                 const attribute::FillGradientAttribute& rFillGradient = rPrimitive.getGradient();
@@ -82,7 +82,7 @@ namespace drawinglayer
                 const basegfx::BColor aStart(rFillGradient.getStartColor());
                 const basegfx::BColor aEnd(rFillGradient.getEndColor());
                 const sal_uInt32 nMaxSteps(sal_uInt32((aStart.getMaximumDistance(aEnd) * 127.5) + 0.5));
-                texture::GeoTexSvx* pNewTex = 0L;
+                boost::shared_ptr< texture::GeoTexSvx > pNewTex;
 
                 if(nMaxSteps)
                 {
@@ -106,32 +106,32 @@ namespace drawinglayer
                     {
                         case attribute::GRADIENTSTYLE_LINEAR:
                         {
-                            pNewTex = new texture::GeoTexSvxGradientLinear(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), -rFillGradient.getAngle());
+                            pNewTex.reset(new texture::GeoTexSvxGradientLinear(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), -rFillGradient.getAngle()));
                             break;
                         }
                         case attribute::GRADIENTSTYLE_AXIAL:
                         {
-                            pNewTex = new texture::GeoTexSvxGradientAxial(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), -rFillGradient.getAngle());
+                            pNewTex.reset(new texture::GeoTexSvxGradientAxial(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), -rFillGradient.getAngle()));
                             break;
                         }
                         case attribute::GRADIENTSTYLE_RADIAL:
                         {
-                            pNewTex = new texture::GeoTexSvxGradientRadial(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY());
+                            pNewTex.reset(new texture::GeoTexSvxGradientRadial(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY()));
                             break;
                         }
                         case attribute::GRADIENTSTYLE_ELLIPTICAL:
                         {
-                            pNewTex = new texture::GeoTexSvxGradientElliptical(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY(), -rFillGradient.getAngle());
+                            pNewTex.reset(new texture::GeoTexSvxGradientElliptical(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY(), -rFillGradient.getAngle()));
                             break;
                         }
                         case attribute::GRADIENTSTYLE_SQUARE:
                         {
-                            pNewTex = new texture::GeoTexSvxGradientSquare(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY(), -rFillGradient.getAngle());
+                            pNewTex.reset(new texture::GeoTexSvxGradientSquare(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY(), -rFillGradient.getAngle()));
                             break;
                         }
                         case attribute::GRADIENTSTYLE_RECT:
                         {
-                            pNewTex = new texture::GeoTexSvxGradientRect(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY(), -rFillGradient.getAngle());
+                            pNewTex.reset(new texture::GeoTexSvxGradientRect(aOutlineRange, aStart, aEnd, nSteps, rFillGradient.getBorder(), rFillGradient.getOffsetX(), rFillGradient.getOffsetY(), -rFillGradient.getAngle()));
                             break;
                         }
                     }
@@ -141,7 +141,7 @@ namespace drawinglayer
                 else
                 {
                     // no color distance -> same color, use simple texture
-                    pNewTex = new texture::GeoTexSvxMono(aStart, 1.0 - aStart.luminance());
+                    pNewTex.reset(new texture::GeoTexSvxMono(aStart, 1.0 - aStart.luminance()));
                     mbSimpleTextureActive = true;
                 }
 
@@ -158,9 +158,6 @@ namespace drawinglayer
                 // process sub-list
                 process(rSubSequence);
 
-                // delete texture
-                delete pNewTex;
-
                 // restore values
                 mbModulate = bOldModulate;
                 mbFilter = bOldFilter;
@@ -186,7 +183,7 @@ namespace drawinglayer
                 // rescue values
                 const bool bOldModulate(getModulate()); mbModulate = rPrimitive.getModulate();
                 const bool bOldFilter(getFilter()); mbFilter = rPrimitive.getFilter();
-                texture::GeoTexSvx* pOldTex = mpGeoTexSvx;
+                boost::shared_ptr< texture::GeoTexSvx > pOldTex = mpGeoTexSvx;
 
                 // calculate logic pixel size in object coordinates. Create transformation view
                 // to object by inverting ObjectToView
@@ -206,15 +203,11 @@ namespace drawinglayer
                 const double fLogicTexSize(fLogicTexSizeX > fLogicTexSizeY ? fLogicTexSizeX : fLogicTexSizeY);
 
                 // create texture and set
-                texture::GeoTexSvxMultiHatch* pNewTex = new texture::GeoTexSvxMultiHatch(rPrimitive, fLogicTexSize);
-                mpGeoTexSvx = pNewTex;
+                mpGeoTexSvx.reset(new texture::GeoTexSvxMultiHatch(rPrimitive, fLogicTexSize));
 
                 // process sub-list
                 process(rSubSequence);
 
-                // delete texture
-                delete mpGeoTexSvx;
-
                 // restore values
                 mbModulate = bOldModulate;
                 mbFilter = bOldFilter;
@@ -231,32 +224,29 @@ namespace drawinglayer
                 // rescue values
                 const bool bOldModulate(getModulate()); mbModulate = rPrimitive.getModulate();
                 const bool bOldFilter(getFilter()); mbFilter = rPrimitive.getFilter();
-                texture::GeoTexSvx* pOldTex = mpGeoTexSvx;
+                boost::shared_ptr< texture::GeoTexSvx > pOldTex = mpGeoTexSvx;
 
                 // create texture
                 const attribute::FillBitmapAttribute& rFillBitmapAttribute = rPrimitive.getBitmap();
 
                 if(rFillBitmapAttribute.getTiling())
                 {
-                    mpGeoTexSvx = new texture::GeoTexSvxBitmapTiled(
+                    mpGeoTexSvx.reset(new texture::GeoTexSvxBitmapTiled(
                         rFillBitmapAttribute.getBitmap(), 
                         rFillBitmapAttribute.getTopLeft() * rPrimitive.getTextureSize(), 
-                        rFillBitmapAttribute.getSize() * rPrimitive.getTextureSize());
+                        rFillBitmapAttribute.getSize() * rPrimitive.getTextureSize()));
                 }
                 else
                 {
-                    mpGeoTexSvx = new texture::GeoTexSvxBitmap(
+                    mpGeoTexSvx.reset(new texture::GeoTexSvxBitmap(
                         rFillBitmapAttribute.getBitmap(), 
                         rFillBitmapAttribute.getTopLeft() * rPrimitive.getTextureSize(), 
-                        rFillBitmapAttribute.getSize() * rPrimitive.getTextureSize());
+                        rFillBitmapAttribute.getSize() * rPrimitive.getTextureSize()));
                 }
 
                 // process sub-list
                 process(rSubSequence);
 
-                // delete texture
-                delete mpGeoTexSvx;
-
                 // restore values
                 mbModulate = bOldModulate;
                 mbFilter = bOldFilter;
@@ -320,7 +310,7 @@ namespace drawinglayer
             if(bPaintIt)
             {
                 // get rid of texture coordinates if there is no texture
-                if(aFill.areTextureCoordinatesUsed() && !getGeoTexSvx() && !getTransparenceGeoTexSvx())
+                if(aFill.areTextureCoordinatesUsed() && !getGeoTexSvx().get() && !getTransparenceGeoTexSvx().get())
                 {
                     aFill.clearTextureCoordinates();
                 }
@@ -507,7 +497,9 @@ namespace drawinglayer
                 {
                     // AlphaTexturePrimitive3D
                     const primitive3d::AlphaTexturePrimitive3D& rPrimitive = static_cast< const primitive3d::AlphaTexturePrimitive3D& >(rBasePrimitive);
+                    mnTransparenceCounter++;
                     impRenderGradientTexturePrimitive3D(rPrimitive, true);
+                    mnTransparenceCounter--;
                     break;
                 }
                 case PRIMITIVE3D_ID_MODIFIEDCOLORPRIMITIVE3D :
@@ -556,8 +548,10 @@ namespace drawinglayer
             mrSdrLightingAttribute(rSdrLightingAttribute),
             maRasterRange(),
             maBColorModifierStack(),
-            mpGeoTexSvx(0),
-            mpTransparenceGeoTexSvx(0),
+            mpGeoTexSvx(),
+            mpTransparenceGeoTexSvx(),
+            maDrawinglayerOpt(),
+            mnTransparenceCounter(0),
             mbModulate(false),
             mbFilter(false),
             mbSimpleTextureActive(false)
diff --git a/drawinglayer/source/processor3d/zbufferprocessor3d.cxx b/drawinglayer/source/processor3d/zbufferprocessor3d.cxx
index 3fd02a4a49..90ea9ecfc9 100644
--- a/drawinglayer/source/processor3d/zbufferprocessor3d.cxx
+++ b/drawinglayer/source/processor3d/zbufferprocessor3d.cxx
@@ -50,6 +50,7 @@
 #include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
 #include <drawinglayer/geometry/viewinformation2d.hxx>
 #include <basegfx/polygon/b3dpolygontools.hxx>
+#include <basegfx/polygon/b3dpolypolygontools.hxx>
 
 //////////////////////////////////////////////////////////////////////////////
 
@@ -233,14 +234,14 @@ private:
             basegfx::B2DPoint aTexCoor(0.0, 0.0);
             getTextureCoor(aTexCoor);
 
-            if(mrProcessor.getGeoTexSvx())
+            if(mrProcessor.getGeoTexSvx().get())
             {
                 // calc color in spot. This may also set to invisible already when
                 // e.g. bitmap textures have transparent parts
                 mrProcessor.getGeoTexSvx()->modifyBColor(aTexCoor, rColor, fOpacity);
             }
             
-            if(basegfx::fTools::more(fOpacity, 0.0) && mrProcessor.getTransparenceGeoTexSvx())
+            if(basegfx::fTools::more(fOpacity, 0.0) && mrProcessor.getTransparenceGeoTexSvx().get())
             {
                 // calc opacity. Object has a 2nd texture, a transparence texture
                 mrProcessor.getTransparenceGeoTexSvx()->modifyOpacity(aTexCoor, fOpacity);
@@ -249,7 +250,7 @@ private:
 
         if(basegfx::fTools::more(fOpacity, 0.0))
         {
-            if(mrProcessor.getGeoTexSvx())
+            if(mrProcessor.getGeoTexSvx().get())
             {
                 if(mbUseNrm)
                 {
@@ -317,9 +318,9 @@ private:
         mbModifyColor = mrProcessor.getBColorModifierStack().count();
         mbHasTexCoor = SCANLINE_EMPTY_INDEX != rA.getTextureIndex() && SCANLINE_EMPTY_INDEX != rB.getTextureIndex();
         mbHasInvTexCoor = SCANLINE_EMPTY_INDEX != rA.getInverseTextureIndex() && SCANLINE_EMPTY_INDEX != rB.getInverseTextureIndex();
-        const bool bTextureActive(mrProcessor.getGeoTexSvx() || mrProcessor.getTransparenceGeoTexSvx());
+        const bool bTextureActive(mrProcessor.getGeoTexSvx().get() || mrProcessor.getTransparenceGeoTexSvx().get());
         mbUseTex = bTextureActive && (mbHasTexCoor || mbHasInvTexCoor || mrProcessor.getSimpleTextureActive());
-        const bool bUseColorTex(mbUseTex && mrProcessor.getGeoTexSvx());
+        const bool bUseColorTex(mbUseTex && mrProcessor.getGeoTexSvx().get());
         const bool bNeedNrmOrCol(!bUseColorTex || (bUseColorTex && mrProcessor.getModulate()));
         mbUseNrm = bNeedNrmOrCol && SCANLINE_EMPTY_INDEX != rA.getNormalIndex() && SCANLINE_EMPTY_INDEX != rB.getNormalIndex();
         mbUseCol = !mbUseNrm && bNeedNrmOrCol && SCANLINE_EMPTY_INDEX != rA.getColorIndex() && SCANLINE_EMPTY_INDEX != rB.getColorIndex();
@@ -434,7 +435,7 @@ void ZBufferRasterConverter3D::processLineSpan(const basegfx::RasterConversionLi
 
                             if(nOpacity >= 0x00ff)
                             {
-                                // full opacity, set z and color
+                                // full opacity (not transparent), set z and color
                                 rOldZ = nNewZ;
                                 mrBuffer.getBPixel(nScanlineIndex) = basegfx::BPixel(aNewColor, 0xff);
                             }
@@ -444,23 +445,23 @@ void ZBufferRasterConverter3D::processLineSpan(const basegfx::RasterConversionLi
 
                                 if(rDest.getOpacity())
                                 {
-                                    // both transparent, mix color based on front pixel's opacity
-                                    // (the new one)
+                                    // mix new color by using
+                                    // color' = color * (1 - opacity) + newcolor * opacity
                                     const sal_uInt16 nTransparence(0x0100 - nOpacity);
                                     rDest.setRed((sal_uInt8)(((rDest.getRed() * nTransparence) + ((sal_uInt16)(255.0 * aNewColor.getRed()) * nOpacity)) >> 8));
                                     rDest.setGreen((sal_uInt8)(((rDest.getGreen() * nTransparence) + ((sal_uInt16)(255.0 * aNewColor.getGreen()) * nOpacity)) >> 8));
                                     rDest.setBlue((sal_uInt8)(((rDest.getBlue() * nTransparence) + ((sal_uInt16)(255.0 * aNewColor.getBlue()) * nOpacity)) >> 8));
-
+                                    
                                     if(0xff != rDest.getOpacity())
                                     {
-                                        // destination is also transparent, mix opacities by weighting
-                                        // old opacity with new pixel's transparence and adding new opacity
-                                        rDest.setOpacity((sal_uInt8)(((rDest.getOpacity() * nTransparence) >> 8) + nOpacity));
+                                        // both are transparent, mix new opacity by using
+                                        // opacity = newopacity * (1 - oldopacity) + oldopacity
+                                        rDest.setOpacity(((sal_uInt8)((nOpacity * (0x0100 - rDest.getOpacity())) >> 8)) + rDest.getOpacity());
                                     }
                                 }
                                 else
                                 {
-                                    // dest is not visible. Set color.
+                                    // dest is unused, set color
                                     rDest = basegfx::BPixel(aNewColor, (sal_uInt8)nOpacity);
                                 }
                             }
@@ -478,134 +479,161 @@ void ZBufferRasterConverter3D::processLineSpan(const basegfx::RasterConversionLi
 }
 
 //////////////////////////////////////////////////////////////////////////////
+// helper class to buffer output for transparent rasterprimitives (filled areas
+// and lines) until the end of processing. To ensure correct transparent
+// visualisation, ZBuffers require to not set Z and to mix with the transparent
+// color. If transparent rasterprimitives overlap, it gets necessary to
+// paint transparent rasterprimitives from back to front to ensure that the
+// mixing happens from back to front. For that purpose, transparent
+// rasterprimitives are held in this class during the processing run, remember
+// all data and will be rendered 
+
+class RasterPrimitive3D
+{
+private:
+    boost::shared_ptr< drawinglayer::texture::GeoTexSvx >     mpGeoTexSvx;
+    boost::shared_ptr< drawinglayer::texture::GeoTexSvx >     mpTransparenceGeoTexSvx;
+    drawinglayer::attribute::MaterialAttribute3D              maMaterial;
+    basegfx::B3DPolyPolygon                                   maPolyPolygon;
+    sal_uInt32                                                mfCenterZ;
+
+    // bitfield
+    bool                                                      mbModulate : 1;
+    bool                                                      mbFilter : 1;
+    bool                                                      mbSimpleTextureActive : 1;
+    bool                                                      mbIsLine : 1;
+
+public:
+    RasterPrimitive3D(
+        const boost::shared_ptr< drawinglayer::texture::GeoTexSvx >& pGeoTexSvx,
+        const boost::shared_ptr< drawinglayer::texture::GeoTexSvx >& pTransparenceGeoTexSvx,
+        const drawinglayer::attribute::MaterialAttribute3D& rMaterial,
+        const basegfx::B3DPolyPolygon& rPolyPolygon,
+        bool bModulate,
+        bool bFilter,
+        bool bSimpleTextureActive,
+        bool bIsLine)
+    :   mpGeoTexSvx(pGeoTexSvx),
+        mpTransparenceGeoTexSvx(pTransparenceGeoTexSvx),
+        maMaterial(rMaterial),
+        maPolyPolygon(rPolyPolygon),
+        mfCenterZ(basegfx::tools::getRange(rPolyPolygon).getCenter().getZ()),
+        mbModulate(bModulate),
+        mbFilter(bFilter),
+        mbSimpleTextureActive(bSimpleTextureActive),
+        mbIsLine(bIsLine)
+    {
+    }
+
+    RasterPrimitive3D& operator=(const RasterPrimitive3D& rComp)
+    {
+        mpGeoTexSvx = rComp.mpGeoTexSvx;
+        mpTransparenceGeoTexSvx = rComp.mpTransparenceGeoTexSvx;
+        maMaterial = rComp.maMaterial;
+        maPolyPolygon = rComp.maPolyPolygon;
+        mfCenterZ = rComp.mfCenterZ;
+        mbModulate = rComp.mbModulate;
+        mbFilter = rComp.mbFilter;
+        mbSimpleTextureActive = rComp.mbSimpleTextureActive;
+        mbIsLine = rComp.mbIsLine;
+
+        return *this;
+    }
+
+    bool operator<(const RasterPrimitive3D& rComp) const
+    {
+        return mfCenterZ < rComp.mfCenterZ;
+    }
+
+    const boost::shared_ptr< drawinglayer::texture::GeoTexSvx >& getGeoTexSvx() const { return mpGeoTexSvx; }
+    const boost::shared_ptr< drawinglayer::texture::GeoTexSvx >& getTransparenceGeoTexSvx() const { return mpTransparenceGeoTexSvx; }
+    const drawinglayer::attribute::MaterialAttribute3D& getMaterial() const { return maMaterial; }
+    const basegfx::B3DPolyPolygon& getPolyPolygon() const { return maPolyPolygon; }
+    bool getModulate() const { return mbModulate; }
+    bool getFilter() const { return mbFilter; }
+    bool getSimpleTextureActive() const { return mbSimpleTextureActive; }
+    bool getIsLine() const { return mbIsLine; }
+};
+
+//////////////////////////////////////////////////////////////////////////////
 
 namespace drawinglayer
 {
     namespace processor3d
     {
-        // the processing method for a single, known primitive
-        void ZBufferProcessor3D::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rBasePrimitive)
+        void ZBufferProcessor3D::rasterconvertB3DPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolygon& rHairline) const
         {
-            // it is a BasePrimitive3D implementation, use getPrimitiveID() call for switch
-            switch(rBasePrimitive.getPrimitiveID())
+            if(mpBZPixelRaster)
             {
-                case PRIMITIVE3D_ID_ALPHATEXTUREPRIMITIVE3D :
+                if(getTransparenceCounter())
                 {
-                    // AlphaTexturePrimitive3D
-                    const primitive3d::AlphaTexturePrimitive3D& rPrimitive = static_cast< const primitive3d::AlphaTexturePrimitive3D& >(rBasePrimitive);
-
-                    if(mbProcessTransparent)
+                    // transparent output; record for later sorting and painting from
+                    // back to front
+                    if(!mpRasterPrimitive3Ds)
                     {
-                        impRenderGradientTexturePrimitive3D(rPrimitive, true);
+                        const_cast< ZBufferProcessor3D* >(this)->mpRasterPrimitive3Ds = new std::vector< RasterPrimitive3D >;
                     }
-                    else
-                    {
-                        mbContainsTransparent = true;
-                    }
-                    break;
-                }
-                case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D :
-                {
-                    // directdraw of PolygonHairlinePrimitive3D
-                    const primitive3d::PolygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::PolygonHairlinePrimitive3D& >(rBasePrimitive);
 
-                    // do something when either not transparent and no transMap, or transparent and a TransMap
-                    if((bool)mbProcessTransparent == (0 != getTransparenceGeoTexSvx()))
-                    {
-                        impRenderPolygonHairlinePrimitive3D(rPrimitive);
-                    }
-                    break;
+                    mpRasterPrimitive3Ds->push_back(RasterPrimitive3D(
+                        getGeoTexSvx(),
+                        getTransparenceGeoTexSvx(),
+                        rMaterial,
+                        basegfx::B3DPolyPolygon(rHairline),
+                        getModulate(),
+                        getFilter(),
+                        getSimpleTextureActive(),
+                        true));
                 }
-                case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
+                else
                 {
-                    // directdraw of PolyPolygonMaterialPrimitive3D
-                    const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rBasePrimitive);
+                    // do rasterconversion
+                    mpZBufferRasterConverter3D->setCurrentMaterial(rMaterial);
 
-                    // do something when either not transparent and no transMap, or transparent and a TransMap
-                    if((bool)mbProcessTransparent == (0 != getTransparenceGeoTexSvx()))
+                    if(mnAntiAlialize > 1)
                     {
-                        impRenderPolyPolygonMaterialPrimitive3D(rPrimitive);
-                    }
-                    break;
-                }
-                default:
-                {
-                    // use the DefaultProcessor3D::processBasePrimitive3D()
-                    DefaultProcessor3D::processBasePrimitive3D(rBasePrimitive);
-                    break;
-                }
-            }
-        }
-
-        void ZBufferProcessor3D::processNonTransparent(const primitive3d::Primitive3DSequence& rSource)
-        {
-            if(mpBZPixelRaster)
-            {
-                mbProcessTransparent = false;
-                mbContainsTransparent = false;
-                process(rSource);
-            }
-        }
-
-        void ZBufferProcessor3D::processTransparent(const primitive3d::Primitive3DSequence& rSource)
-        {
-            if(mpBZPixelRaster && mbContainsTransparent)
-            {
-                mbProcessTransparent = true;
-                process(rSource);
-            }
-        }
+                        const bool bForceLineSnap(getOptionsDrawinglayer().IsAntiAliasing() && getOptionsDrawinglayer().IsSnapHorVerLinesToDiscrete());
 
-        void ZBufferProcessor3D::rasterconvertB3DPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolygon& rHairline) const
-        {
-            if(mpBZPixelRaster)
-            {
-                mpZBufferRasterConverter3D->setCurrentMaterial(rMaterial);
+                        if(bForceLineSnap)
+                        {
+                            basegfx::B3DHomMatrix aTransform;
+                            basegfx::B3DPolygon aSnappedHairline(rHairline);
+                            const double fScaleDown(1.0 / mnAntiAlialize);
+                            const double fScaleUp(mnAntiAlialize);
 
-                if(mnAntiAlialize > 1)
-                {
-                    const bool bForceLineSnap(getOptionsDrawinglayer().IsAntiAliasing() && getOptionsDrawinglayer().IsSnapHorVerLinesToDiscrete());
+                            // take oversampling out
+                            aTransform.scale(fScaleDown, fScaleDown, 1.0);
+                            aSnappedHairline.transform(aTransform);
 
-                    if(bForceLineSnap)
-                    {
-                        basegfx::B3DHomMatrix aTransform;
-                        basegfx::B3DPolygon aSnappedHairline(rHairline);
-                        const double fScaleDown(1.0 / mnAntiAlialize);
-                        const double fScaleUp(mnAntiAlialize);
+                            // snap to integer
+                            aSnappedHairline = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aSnappedHairline);
 
-                        // take oversampling out
-                        aTransform.scale(fScaleDown, fScaleDown, 1.0);
-                        aSnappedHairline.transform(aTransform);
+                            // add oversampling again
+                            aTransform.identity();
+                            aTransform.scale(fScaleUp, fScaleUp, 1.0);
 
-                        // snap to integer
-                        aSnappedHairline = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aSnappedHairline);
+                            if(false)
+                            {
+                                // when really want to go to single pixel lines, move to center.
+                                // Without this translation, all hor/ver hairlines will be centered exactly
+                                // between two pixel lines (which looks best)
+                                const double fTranslateToCenter(mnAntiAlialize * 0.5);
+                                aTransform.translate(fTranslateToCenter, fTranslateToCenter, 0.0);
+                            }
 
-                        // add oversampling again
-                        aTransform.identity();
-                        aTransform.scale(fScaleUp, fScaleUp, 1.0);
+                            aSnappedHairline.transform(aTransform);
 
-                        if(false)
+                            mpZBufferRasterConverter3D->rasterconvertB3DPolygon(aSnappedHairline, 0, mpBZPixelRaster->getHeight(), mnAntiAlialize);
+                        }
+                        else
                         {
-                            // when really want to go to single pixel lines, move to center.
-                            // Without this translation, all hor/ver hairlines will be centered exactly
-                            // between two pixel lines (which looks best)
-                            const double fTranslateToCenter(mnAntiAlialize * 0.5);
-                            aTransform.translate(fTranslateToCenter, fTranslateToCenter, 0.0);
+                            mpZBufferRasterConverter3D->rasterconvertB3DPolygon(rHairline, 0, mpBZPixelRaster->getHeight(), mnAntiAlialize);
                         }
-
-                        aSnappedHairline.transform(aTransform);
-
-                        mpZBufferRasterConverter3D->rasterconvertB3DPolygon(aSnappedHairline, 0, mpBZPixelRaster->getHeight(), mnAntiAlialize);
                     }
                     else
                     {
-                        mpZBufferRasterConverter3D->rasterconvertB3DPolygon(rHairline, 0, mpBZPixelRaster->getHeight(), mnAntiAlialize);
+                        mpZBufferRasterConverter3D->rasterconvertB3DPolygon(rHairline, 0, mpBZPixelRaster->getHeight(), 1);
                     }
                 }
-                else
-                {
-                    mpZBufferRasterConverter3D->rasterconvertB3DPolygon(rHairline, 0, mpBZPixelRaster->getHeight(), 1);
-                }
             }
         }
 
@@ -613,8 +641,30 @@ namespace drawinglayer
         {
             if(mpBZPixelRaster)
             {
-                mpZBufferRasterConverter3D->setCurrentMaterial(rMaterial);
-                mpZBufferRasterConverter3D->rasterconvertB3DPolyPolygon(rFill, &maInvEyeToView, 0, mpBZPixelRaster->getHeight());
+                if(getTransparenceCounter())
+                {
+                    // transparent output; record for later sorting and painting from
+                    // back to front
+                    if(!mpRasterPrimitive3Ds)
+                    {
+                        const_cast< ZBufferProcessor3D* >(this)->mpRasterPrimitive3Ds = new std::vector< RasterPrimitive3D >;
+                    }
+
+                    mpRasterPrimitive3Ds->push_back(RasterPrimitive3D(
+                        getGeoTexSvx(),
+                        getTransparenceGeoTexSvx(),
+                        rMaterial,
+                        rFill,
+                        getModulate(),
+                        getFilter(),
+                        getSimpleTextureActive(),
+                        false));
+                }
+                else
+                {
+                    mpZBufferRasterConverter3D->setCurrentMaterial(rMaterial);
+                    mpZBufferRasterConverter3D->rasterconvertB3DPolyPolygon(rFill, &maInvEyeToView, 0, mpBZPixelRaster->getHeight());
+                }
             }
         }
         
@@ -632,8 +682,7 @@ namespace drawinglayer
             maInvEyeToView(),
             mpZBufferRasterConverter3D(0),
             mnAntiAlialize(nAntiAlialize),
-            mbProcessTransparent(false),
-            mbContainsTransparent(false)
+            mpRasterPrimitive3Ds(0)
         {
             // generate ViewSizes
             const double fFullViewSizeX((rViewInformation2D.getObjectToViewTransformation() * basegfx::B2DVector(fSizeX, 0.0)).getLength());
@@ -729,6 +778,58 @@ namespace drawinglayer
                 delete mpZBufferRasterConverter3D;
                 delete mpBZPixelRaster;
             }
+
+            if(mpRasterPrimitive3Ds)
+            {
+                OSL_ASSERT("ZBufferProcessor3D: destructed, but there are unrendered transparent geometries. Use ZBufferProcessor3D::finish() to render these (!)");
+                delete mpRasterPrimitive3Ds;
+            }
+        }
+
+        void ZBufferProcessor3D::finish()
+        {
+            if(mpRasterPrimitive3Ds)
+            {
+                // there are transparent rasterprimitives
+                const sal_uInt32 nSize(mpRasterPrimitive3Ds->size());
+
+                if(nSize > 1)
+                {
+                    // sort them from back to front
+                    std::sort(mpRasterPrimitive3Ds->begin(), mpRasterPrimitive3Ds->end());
+                }
+
+                for(sal_uInt32 a(0); a < nSize; a++)
+                {
+                    // paint each one by setting the remembered data and calling
+                    // the render method
+                    const RasterPrimitive3D& rCandidate = (*mpRasterPrimitive3Ds)[a];
+                    
+                    mpGeoTexSvx = rCandidate.getGeoTexSvx();
+                    mpTransparenceGeoTexSvx = rCandidate.getTransparenceGeoTexSvx();
+                    mbModulate = rCandidate.getModulate();
+                    mbFilter = rCandidate.getFilter();
+                    mbSimpleTextureActive = rCandidate.getSimpleTextureActive();
+
+                    if(rCandidate.getIsLine())
+                    {
+                        rasterconvertB3DPolygon(
+                            rCandidate.getMaterial(), 
+                            rCandidate.getPolyPolygon().getB3DPolygon(0));
+                    }
+                    else
+                    {
+                        rasterconvertB3DPolyPolygon(
+                            rCandidate.getMaterial(), 
+                            rCandidate.getPolyPolygon());
+                    }
+                }
+
+                // delete them to signal the destructor that all is done and
+                // to allow asserting there
+                delete mpRasterPrimitive3Ds;
+                mpRasterPrimitive3Ds = 0;
+            }
         }
 
         BitmapEx ZBufferProcessor3D::getBitmapEx() const