xref: /trunk/main/canvas/source/directx/dx_9rm.cxx (revision cdf0e10c)
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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_canvas.hxx"
30 
31 #if DIRECTX_VERSION == 0x0900
32 
33 #define MAX_TEXTURE_SIZE (2048)
34 #define MIN_TEXTURE_SIZE (32)
35 //#define FAKE_MAX_NUMBER_TEXTURES (2)
36 //#define FAKE_MAX_TEXTURE_SIZE (4096)
37 
38 #define VERTEX_BUFFER_SIZE (341*3) // 1023, the size of the internal
39                                    // vertex buffer (must be divisable
40                                    // by 3, as each triangle primitive
41                                    // has 3 vertices)
42 
43 
44 //////////////////////////////////////////////////////////////////////////////////
45 // includes
46 //////////////////////////////////////////////////////////////////////////////////
47 #include <vcl/syschild.hxx>
48 #include <vcl/window.hxx>
49 
50 #include <canvas/debug.hxx>
51 #include <canvas/verbosetrace.hxx>
52 #include <tools/diagnose_ex.h>
53 
54 #include <canvas/elapsedtime.hxx>
55 #include <canvas/canvastools.hxx>
56 #include <canvas/rendering/icolorbuffer.hxx>
57 #include <canvas/rendering/isurface.hxx>
58 #include <canvas/rendering/irendermodule.hxx>
59 #include <basegfx/numeric/ftools.hxx>
60 #include <basegfx/vector/b2dsize.hxx>
61 #include <basegfx/vector/b2isize.hxx>
62 #include <basegfx/point/b2ipoint.hxx>
63 #include <basegfx/range/b2irectangle.hxx>
64 #include <boost/scoped_ptr.hpp>
65 #include <com/sun/star/lang/NoSupportException.hpp>
66 
67 #include "dx_rendermodule.hxx"
68 #include "dx_config.hxx"
69 
70 #undef WB_LEFT
71 #undef WB_RIGHT
72 
73 #include "dx_impltools.hxx"
74 #include <vcl/sysdata.hxx>
75 
76 #if defined(DX_DEBUG_IMAGES)
77 # if OSL_DEBUG_LEVEL > 0
78 #  include <imdebug.h>
79 #  undef min
80 #  undef max
81 # endif
82 #endif
83 
84 using namespace ::com::sun::star;
85 
86 //////////////////////////////////////////////////////////////////////////////////
87 // 'dxcanvas' namespace
88 //////////////////////////////////////////////////////////////////////////////////
89 
90 namespace dxcanvas
91 {
92 	namespace
93 	{
94         //////////////////////////////////////////////////////////////////////////////////
95         // monitorSupport
96         //////////////////////////////////////////////////////////////////////////////////
97 
98         class monitorSupport
99         {
100         public:
101 
102             monitorSupport() :
103                 mhLibrary(LoadLibrary("user32.dll")),
104                 mpMonitorFromWindow(NULL)
105             {
106                 if(mhLibrary)
107                     mpMonitorFromWindow = reinterpret_cast<fMonitorFromWindow>(
108                         GetProcAddress(
109                             mhLibrary,"MonitorFromWindow"));
110             }
111 
112             ~monitorSupport()
113             {
114                 if(mhLibrary)
115                     FreeLibrary(mhLibrary);
116                 mhLibrary=0;
117             }
118 
119             HMONITOR MonitorFromWindow( HWND hwnd )
120             {
121                 // return adapter_default in case something went wrong...
122                 if(!(mpMonitorFromWindow))
123                     return HMONITOR(0);
124                 // MONITOR_DEFAULTTONEAREST
125                 const DWORD dwFlags(0x00000002);
126                 return mpMonitorFromWindow(hwnd,dwFlags);
127             }
128         private:
129 
130             HINSTANCE mhLibrary;
131             typedef HMONITOR (WINAPI *fMonitorFromWindow )( HWND hwnd, DWORD dwFlags );
132             fMonitorFromWindow mpMonitorFromWindow;
133         };
134 
135         monitorSupport aMonitorSupport;
136 
137 
138 		class DXRenderModule;
139 
140 		//////////////////////////////////////////////////////////////////////////////////
141 		// DXSurface
142 		//////////////////////////////////////////////////////////////////////////////////
143 
144 		/** ISurface implemenation.
145 
146 			@attention holds the DXRenderModule via non-refcounted
147 			reference! This is safe with current state of affairs, since
148 			the canvas::PageManager holds surface and render module via
149 			shared_ptr (and makes sure all surfaces are deleted before its
150 			render module member goes out of scope).
151 		*/
152 		class DXSurface : public canvas::ISurface
153 		{
154 		public:
155 			DXSurface( DXRenderModule&           rRenderModule,
156                        const ::basegfx::B2ISize& rSize );
157 			~DXSurface();
158 
159 			virtual bool selectTexture();
160 			virtual bool isValid();
161 			virtual bool update( const ::basegfx::B2IPoint& rDestPos,
162 								const ::basegfx::B2IRange& rSourceRect,
163 								::canvas::IColorBuffer&    rSource );
164 			virtual ::basegfx::B2IVector getSize();
165 			COMReference<IDirect3DTexture9> getTexture() const;
166 
167 		private:
168 			/// Guard local methods against concurrent acces to RenderModule
169 			class ImplRenderModuleGuard : private ::boost::noncopyable
170 			{
171 			public:
172 				explicit inline ImplRenderModuleGuard( DXRenderModule& rRenderModule );
173 				inline ~ImplRenderModuleGuard();
174 
175 			private:
176 				DXRenderModule& mrRenderModule;
177 			};
178 
179 			DXRenderModule&                  mrRenderModule;
180 			COMReference<IDirect3DTexture9>  mpTexture;
181 
182 			::basegfx::B2IVector             maSize;
183 		};
184 
185 
186 		//////////////////////////////////////////////////////////////////////////////////
187 		// DXRenderModule
188 		//////////////////////////////////////////////////////////////////////////////////
189 
190 		/// Default implementation of IDXRenderModule
191 		class DXRenderModule : public IDXRenderModule
192 		{
193         public:
194             explicit DXRenderModule( const ::Window& rWindow );
195 			~DXRenderModule();
196 
197             virtual void lock() const { maMutex.acquire(); }
198             virtual void unlock() const { maMutex.release(); }
199 
200             virtual COMReference<IDirect3DSurface9>
201                 createSystemMemorySurface( const ::basegfx::B2IVector& rSize );
202 			virtual void disposing();
203 			virtual HWND getHWND() const { return mhWnd; }
204 			virtual void screenShot();
205 
206             virtual bool flip( const ::basegfx::B2IRectangle& rUpdateArea,
207                                const ::basegfx::B2IRectangle& rCurrWindowArea );
208 
209             virtual void resize( const ::basegfx::B2IRange& rect );
210             virtual ::basegfx::B2IVector getPageSize();
211             virtual ::canvas::ISurfaceSharedPtr createSurface( const ::basegfx::B2IVector& surfaceSize );
212             virtual void beginPrimitive( PrimitiveType eType );
213             virtual void endPrimitive();
214             virtual void pushVertex( const ::canvas::Vertex& vertex );
215             virtual bool isError();
216 
217             COMReference<IDirect3DDevice9> getDevice() { return mpDevice; }
218 
219             void flushVertexCache();
220 			void commitVertexCache();
221 
222         private:
223 
224             bool create( const ::Window& rWindow );
225 			bool createDevice();
226             bool verifyDevice( const UINT nAdapter );
227 			UINT getAdapterFromWindow();
228 
229             /** This object represents the DirectX state machine.  In order
230                 to serialize access to DirectX's global state, a global
231                 mutex is required.
232             */
233             static ::osl::Mutex                         maMutex;
234 
235             HWND                                        mhWnd;
236             COMReference<IDirect3DDevice9>              mpDevice;
237             COMReference<IDirect3D9>                    mpDirect3D9;
238             COMReference<IDirect3DSwapChain9>           mpSwapChain;
239             COMReference<IDirect3DVertexBuffer9>        mpVertexBuffer;
240             ::canvas::ISurfaceSharedPtr                 mpTexture;
241             ::boost::scoped_ptr<SystemChildWindow>      mpWindow;
242             ::basegfx::B2IVector                        maSize;
243             typedef std::vector<canvas::Vertex>         vertexCache_t;
244             vertexCache_t                               maVertexCache;
245             std::size_t                                 mnCount;
246             int                                         mnBeginSceneCount;
247             bool                                        mbCanUseDynamicTextures;
248             bool                                        mbError;
249             PrimitiveType                               meType;
250             ::basegfx::B2IVector                        maPageSize;
251             D3DPRESENT_PARAMETERS                       mad3dpp;
252 
253 			inline bool isDisposed() const { return (mhWnd==NULL); }
254 
255 			struct dxvertex
256 			{
257 				float x,y,z,rhw;
258 				DWORD diffuse;
259 				float u,v;
260 			};
261 
262 			std::size_t									maNumVertices;
263 			std::size_t                                 maWriteIndex;
264 			std::size_t                                 maReadIndex;
265 		};
266 
267 		::osl::Mutex DXRenderModule::maMutex;
268 
269 		//////////////////////////////////////////////////////////////////////////////////
270 		// DXSurface::ImplRenderModuleGuard
271 		//////////////////////////////////////////////////////////////////////////////////
272 
273 		inline DXSurface::ImplRenderModuleGuard::ImplRenderModuleGuard(
274 			DXRenderModule& rRenderModule ) :
275 			mrRenderModule( rRenderModule )
276 		{
277 			mrRenderModule.lock();
278 		}
279 
280 		inline DXSurface::ImplRenderModuleGuard::~ImplRenderModuleGuard()
281 		{
282 			mrRenderModule.unlock();
283 		}
284 
285 #ifdef FAKE_MAX_NUMBER_TEXTURES
286 		static sal_uInt32 gNumSurfaces = 0;
287 #endif
288 
289         void fillRect( sal_uInt32 *pDest,
290                        sal_uInt32 dwWidth,
291                        sal_uInt32 dwHeight,
292                        sal_uInt32 dwPitch,
293                        sal_uInt32 dwColor )
294         {
295             for(sal_uInt32 i=0; i<dwWidth; ++i)
296             {
297                 pDest[i]=dwColor;
298                 pDest[((dwHeight-1)*dwPitch)+i]=dwColor;
299             }
300 
301             for(sal_uInt32 j=0; j<dwHeight; ++j)
302             {
303                 pDest[0]=dwColor;
304                 pDest[dwWidth-1]=dwColor;
305                 pDest += dwPitch;
306             }
307         }
308 
309 		//////////////////////////////////////////////////////////////////////////////////
310 		// DXSurface::DXSurface
311 		//////////////////////////////////////////////////////////////////////////////////
312 
313 		DXSurface::DXSurface( DXRenderModule&           rRenderModule,
314 							  const ::basegfx::B2ISize& rSize ) :
315             mrRenderModule(rRenderModule),
316             mpTexture(NULL),
317 			maSize()
318 		{
319 			ImplRenderModuleGuard aGuard( mrRenderModule );
320 
321 #ifdef FAKE_MAX_NUMBER_TEXTURES
322 			++gNumSurfaces;
323 			if(gNumSurfaces >= FAKE_MAX_NUMBER_TEXTURES)
324 				return;
325 #endif
326 
327 #ifdef FAKE_MAX_TEXTURE_SIZE
328 			if(rSize.getX() > FAKE_MAX_TEXTURE_SIZE)
329 				return;
330 			if(rSize.getY() > FAKE_MAX_TEXTURE_SIZE)
331 				return;
332 #endif
333 
334 			ENSURE_ARG_OR_THROW(rSize.getX() > 0 && rSize.getY() > 0,
335 							"DXSurface::DXSurface(): request for zero-sized surface");
336 
337 			COMReference<IDirect3DDevice9> pDevice(rRenderModule.getDevice());
338 
339 			IDirect3DTexture9 *pTexture(NULL);
340 			if(FAILED(pDevice->CreateTexture(
341 				rSize.getX(),
342 				rSize.getY(),
343 				1,0,D3DFMT_A8R8G8B8,
344 				D3DPOOL_MANAGED,
345 				&pTexture,NULL)))
346 				return;
347 
348 			mpTexture=COMReference<IDirect3DTexture9>(pTexture);
349             maSize = rSize;
350 		}
351 
352 		//////////////////////////////////////////////////////////////////////////////////
353 		// DXSurface::~DXSurface
354 		//////////////////////////////////////////////////////////////////////////////////
355 
356 		DXSurface::~DXSurface()
357 		{
358 			ImplRenderModuleGuard aGuard( mrRenderModule );
359 
360 #ifdef FAKE_MAX_NUMBER_TEXTURES
361 			gNumSurfaces--;
362 #endif
363 		}
364 
365 		//////////////////////////////////////////////////////////////////////////////////
366 		// DXSurface::selectTexture
367 		//////////////////////////////////////////////////////////////////////////////////
368 
369 		bool DXSurface::selectTexture()
370 		{
371 			ImplRenderModuleGuard aGuard( mrRenderModule );
372 			mrRenderModule.flushVertexCache();
373 			COMReference<IDirect3DDevice9> pDevice(mrRenderModule.getDevice());
374 
375 			if( FAILED(pDevice->SetTexture(0,mpTexture.get())) )
376                 return false;
377 
378 			return true;
379 		}
380 
381 		//////////////////////////////////////////////////////////////////////////////////
382 		// DXSurface::isValid
383 		//////////////////////////////////////////////////////////////////////////////////
384 
385 		bool DXSurface::isValid()
386 		{
387 			ImplRenderModuleGuard aGuard( mrRenderModule );
388 
389 			if(!(mpTexture.is()))
390 				return false;
391 			return true;
392 		}
393 
394 		//////////////////////////////////////////////////////////////////////////////////
395 		// DXSurface::update
396 		//////////////////////////////////////////////////////////////////////////////////
397 
398 		bool DXSurface::update( const ::basegfx::B2IPoint& rDestPos,
399 								const ::basegfx::B2IRange& rSourceRect,
400 								::canvas::IColorBuffer&    rSource )
401 		{
402 			ImplRenderModuleGuard aGuard( mrRenderModule );
403 
404 			// can't update if surface is not valid, that means
405 			// either not existent nor restored...
406 			if(!(isValid()))
407 				return false;
408 
409 			D3DLOCKED_RECT aLockedRect;
410 			RECT rect;
411 			rect.left = std::max(sal_Int32(0),rDestPos.getX());
412 			rect.top =  std::max(sal_Int32(0),rDestPos.getY());
413             // to avoid interpolation artifacts from other textures,
414             // the surface manager allocates one pixel gap between
415             // them. Clear that to transparent.
416 			rect.right = std::min(maSize.getX(),
417                                   rect.left + sal_Int32(rSourceRect.getWidth()+1));
418             rect.bottom = std::min(maSize.getY(),
419                                    rect.top + sal_Int32(rSourceRect.getHeight()+1));
420             const bool bClearRightColumn( rect.right < maSize.getX() );
421             const bool bClearBottomRow( rect.bottom < maSize.getY() );
422 
423 			if(SUCCEEDED(mpTexture->LockRect(0,&aLockedRect,&rect,D3DLOCK_NOSYSLOCK)))
424 			{
425 				if(sal_uInt8* pImage = rSource.lock())
426 				{
427 					switch( rSource.getFormat() )
428 					{
429 						case ::canvas::IColorBuffer::FMT_A8R8G8B8:
430 						{
431 							const std::size_t nSourceBytesPerPixel(4);
432 							const std::size_t nSourcePitchInBytes(rSource.getStride());
433 							pImage += rSourceRect.getMinY()*nSourcePitchInBytes;
434 							pImage += rSourceRect.getMinX()*nSourceBytesPerPixel;
435 
436 							// calculate the destination memory address
437 							sal_uInt8 *pDst = (sal_uInt8*)aLockedRect.pBits;
438 
439 							const sal_uInt32 nNumBytesToCopy(
440 								static_cast<sal_uInt32>(
441 									rSourceRect.getWidth())*
442 								nSourceBytesPerPixel);
443 							const sal_uInt64 nNumLines(rSourceRect.getHeight());
444 
445 							for(sal_uInt32 i=0; i<nNumLines; ++i)
446 							{
447                                 rtl_copyMemory(pDst,pImage,nNumBytesToCopy);
448 
449                                 if( bClearRightColumn )
450                                 {
451                                     // to avoid interpolation artifacts
452                                     // from other textures, the surface
453                                     // manager allocates one pixel gap
454                                     // between them. Clear that to
455                                     // transparent.
456                                     pDst[nNumBytesToCopy] =
457                                         pDst[nNumBytesToCopy+1] =
458                                         pDst[nNumBytesToCopy+2] =
459                                         pDst[nNumBytesToCopy+3] = 0x00;
460                                 }
461                                 pDst += aLockedRect.Pitch;
462 								pImage += nSourcePitchInBytes;
463 							}
464 
465                             if( bClearBottomRow )
466                                 rtl_zeroMemory(pDst,nNumBytesToCopy+4);
467 						}
468 						break;
469 
470 						case ::canvas::IColorBuffer::FMT_R8G8B8:
471 						{
472 							const std::size_t nSourceBytesPerPixel(3);
473 							const std::size_t nSourcePitchInBytes(rSource.getStride());
474 							pImage += rSourceRect.getMinY()*nSourcePitchInBytes;
475 							pImage += rSourceRect.getMinX()*nSourceBytesPerPixel;
476 
477 							// calculate the destination memory address
478 							sal_uInt8 *pDst = (sal_uInt8*)aLockedRect.pBits;
479 
480 							const sal_Int32 nNumColumns(
481                                 sal::static_int_cast<sal_Int32>(rSourceRect.getWidth()));
482 							const sal_Int32 nNumLines(
483                                 sal::static_int_cast<sal_Int32>(rSourceRect.getHeight()));
484 							for(sal_Int32 i=0; i<nNumLines; ++i)
485 							{
486 								sal_uInt32 *pDstScanline = reinterpret_cast<sal_uInt32 *>(pDst);
487 								sal_uInt8 *pSrcScanline = reinterpret_cast<sal_uInt8 *>(pImage);
488 
489                                 for(sal_Int32 x=0; x<nNumColumns; ++x)
490                                 {
491                                     sal_uInt32 color(0xFF000000);
492                                     color |= pSrcScanline[2]<<16;
493                                     color |= pSrcScanline[1]<<8;
494                                     color |= pSrcScanline[0];
495                                     pSrcScanline += 3;
496                                     *pDstScanline++ = color;
497                                 }
498                                 if( bClearRightColumn )
499                                     *pDstScanline++ = 0xFF000000;
500 
501 								pDst += aLockedRect.Pitch;
502 								pImage += nSourcePitchInBytes;
503 							}
504 
505                             if( bClearBottomRow )
506                                 rtl_zeroMemory(pDst,4*(nNumColumns+1));
507 						}
508 						break;
509 
510 						case ::canvas::IColorBuffer::FMT_X8R8G8B8:
511 						{
512 							const std::size_t nSourceBytesPerPixel(4);
513 							const std::size_t nSourcePitchInBytes(rSource.getStride());
514 							pImage += rSourceRect.getMinY()*nSourcePitchInBytes;
515 							pImage += rSourceRect.getMinX()*nSourceBytesPerPixel;
516 
517 							// calculate the destination memory address
518 							sal_uInt8 *pDst = (sal_uInt8*)aLockedRect.pBits;
519 
520 							const sal_Int32 nNumLines(
521                                 sal::static_int_cast<sal_Int32>(rSourceRect.getHeight()));
522 							const sal_Int32 nNumColumns(
523                                 sal::static_int_cast<sal_Int32>(rSourceRect.getWidth()));
524 							for(sal_Int32 i=0; i<nNumLines; ++i)
525 							{
526 								sal_uInt32 *pSrc32 = reinterpret_cast<sal_uInt32 *>(pImage);
527 								sal_uInt32 *pDst32 = reinterpret_cast<sal_uInt32 *>(pDst);
528 								for(sal_Int32 j=0; j<nNumColumns; ++j)
529 									pDst32[j] = 0xFF000000 | pSrc32[j];
530 
531                                 if( bClearRightColumn )
532                                     pDst32[nNumColumns] = 0xFF000000;
533 
534 								pDst += aLockedRect.Pitch;
535 								pImage += nSourcePitchInBytes;
536 							}
537 
538                             if( bClearBottomRow )
539                                 rtl_zeroMemory(pDst,4*(nNumColumns+1));
540 						}
541 						break;
542 
543 						default:
544 							ENSURE_OR_RETURN_FALSE(false,
545 											"DXSurface::update(): Unknown/unimplemented buffer format" );
546 							break;
547 					}
548 
549 					rSource.unlock();
550 				}
551 
552 				return SUCCEEDED(mpTexture->UnlockRect(0));
553 			}
554 
555 			return true;
556 		}
557 
558 		//////////////////////////////////////////////////////////////////////////////////
559 		// DXSurface::getSize
560 		//////////////////////////////////////////////////////////////////////////////////
561 
562 		::basegfx::B2IVector DXSurface::getSize()
563 		{
564 			return maSize;
565 		}
566 
567         COMReference<IDirect3DTexture9> DXSurface::getTexture() const
568         {
569             return mpTexture;
570         }
571 
572 		//////////////////////////////////////////////////////////////////////////////////
573 		// DXRenderModule::DXRenderModule
574 		//////////////////////////////////////////////////////////////////////////////////
575 
576         DXRenderModule::DXRenderModule( const ::Window& rWindow ) :
577 	        mhWnd(0),
578 			mpDevice(),
579 			mpDirect3D9(),
580 			mpSwapChain(),
581             mpVertexBuffer(),
582 			mpTexture(),
583 			maSize(),
584             maVertexCache(),
585 			mnCount(0),
586 			mnBeginSceneCount(0),
587 			mbCanUseDynamicTextures(false),
588 			mbError( false ),
589 			meType( PRIMITIVE_TYPE_UNKNOWN ),
590 			maPageSize(),
591             mad3dpp(),
592 			maNumVertices( VERTEX_BUFFER_SIZE ),
593 			maWriteIndex(0),
594 			maReadIndex(0)
595 		{
596             // TODO(P2): get rid of those fine-grained locking
597 			::osl::MutexGuard aGuard( maMutex );
598 
599 			if(!(create(rWindow)))
600 			{
601 				throw lang::NoSupportException(
602 					::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
603                                          "Could not create DirectX device!") ),NULL);
604 			}
605 
606 			// allocate a single texture surface which can be used later.
607 			// we also use this to calibrate the page size.
608 			::basegfx::B2IVector aPageSize(maPageSize);
609 			while(true)
610 			{
611                 mpTexture = ::canvas::ISurfaceSharedPtr(
612                     new DXSurface(*this,aPageSize));
613                 if(mpTexture->isValid())
614 					break;
615 
616 				aPageSize.setX(aPageSize.getX()>>1);
617 				aPageSize.setY(aPageSize.getY()>>1);
618 				if((aPageSize.getX() < MIN_TEXTURE_SIZE) ||
619 				   (aPageSize.getY() < MIN_TEXTURE_SIZE))
620 				{
621 					throw lang::NoSupportException(
622 						::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
623 											"Could not create DirectX device - "
624                                             "insufficient texture space!") ),NULL);
625 				}
626 			}
627 			maPageSize=aPageSize;
628 
629 			IDirect3DVertexBuffer9 *pVB(NULL);
630 			DWORD aFVF(D3DFVF_XYZRHW|D3DFVF_DIFFUSE|D3DFVF_TEX1);
631             if( FAILED(mpDevice->CreateVertexBuffer(sizeof(dxvertex)*maNumVertices,
632                                                     D3DUSAGE_DYNAMIC|D3DUSAGE_WRITEONLY,
633                                                     aFVF,
634                                                     D3DPOOL_DEFAULT,
635                                                     &pVB,
636                                                     NULL)) )
637             {
638                 throw lang::NoSupportException(
639                     ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
640                                          "Could not create DirectX device - out of memory!")),NULL);
641             }
642 
643 			mpVertexBuffer=COMReference<IDirect3DVertexBuffer9>(pVB);
644 		}
645 
646 		//////////////////////////////////////////////////////////////////////////////////
647 		// DXRenderModule::~DXRenderModule
648 		//////////////////////////////////////////////////////////////////////////////////
649 
650 		DXRenderModule::~DXRenderModule()
651 		{
652 			disposing();
653 		}
654 
655 		//////////////////////////////////////////////////////////////////////////////////
656 		// DXRenderModule::disposing
657 		//////////////////////////////////////////////////////////////////////////////////
658 
659 		void DXRenderModule::disposing()
660 		{
661 			if(!(mhWnd))
662 				return;
663 
664 			mpTexture.reset();
665 			mpWindow.reset();
666 			mhWnd=NULL;
667 
668             // refrain from releasing the DX9 objects. We're the only
669             // ones holding references to them, and it might be
670             // dangerous to destroy the DX9 device, before all other
671             // objects are dead.
672 		}
673 
674 		//////////////////////////////////////////////////////////////////////////////////
675 		// DXRenderModule::create
676 		//////////////////////////////////////////////////////////////////////////////////
677 
678 		bool DXRenderModule::create( const ::Window& rWindow )
679 		{
680             // TODO(P2): get rid of those fine-grained locking
681 			::osl::MutexGuard aGuard( maMutex );
682 
683 			maVertexCache.reserve(1024);
684 
685 			mpWindow.reset(
686 				new SystemChildWindow(
687 				const_cast<Window *>(&rWindow), 0) );
688 
689 			// system child window must not receive mouse events
690 			mpWindow->SetMouseTransparent( TRUE );
691 
692 			// parent should receive paint messages as well
693 			// [PARENTCLIPMODE_NOCLIP], the argument is here
694 			// passed as plain numeric value since the stupid
695 			// define utilizes a USHORT cast.
696 			mpWindow->SetParentClipMode(0x0002);
697 
698 			// the system child window must not clear its background
699 			mpWindow->EnableEraseBackground( sal_False );
700 
701 			mpWindow->SetControlForeground();
702 			mpWindow->SetControlBackground();
703 			mpWindow->EnablePaint(sal_False);
704 
705 			const SystemEnvData *pData = mpWindow->GetSystemData();
706 			const HWND hwnd(reinterpret_cast<HWND>(pData->hWnd));
707 			mhWnd = const_cast<HWND>(hwnd);
708 
709 			ENSURE_OR_THROW( IsWindow( reinterpret_cast<HWND>(mhWnd) ),
710 							"DXRenderModule::create() No valid HWND given." );
711 
712 			// retrieve position and size of the parent window
713 			const ::Size &rSizePixel(rWindow.GetSizePixel());
714 
715 			// remember the size of the parent window, since we
716 			// need to use this for our child window.
717 			maSize.setX(static_cast<sal_Int32>(rSizePixel.Width()));
718 			maSize.setY(static_cast<sal_Int32>(rSizePixel.Height()));
719 
720 			// let the child window cover the same size as the parent window.
721 			mpWindow->SetPosSizePixel(0,0,maSize.getX(),maSize.getY());
722 
723 			// TODO(F2): since we would like to share precious hardware
724 			// resources, the direct3d9 object should be global. each new
725 			// request for a canvas should only create a new swapchain.
726 			mpDirect3D9 = COMReference<IDirect3D9>(
727 				Direct3DCreate9(D3D_SDK_VERSION));
728 			if(!mpDirect3D9.is())
729 				return false;
730 
731 			// create a device from the direct3d9 object.
732 			if(!(createDevice()))
733 				return false;
734 
735 			mpWindow->Show();
736 
737 			return true;
738 		}
739 
740 		//////////////////////////////////////////////////////////////////////////////////
741 		// DXRenderModule::verifyDevice
742 		//////////////////////////////////////////////////////////////////////////////////
743 
744 		bool DXRenderModule::verifyDevice( const UINT nAdapter )
745 		{
746 			ENSURE_OR_THROW( mpDirect3D9.is(),
747                               "DXRenderModule::verifyDevice() No valid device." );
748 
749 			// ask direct3d9 about the capabilities of hardware devices on a specific adapter.
750 			// here we decide if the underlying hardware of the machine 'is good enough'.
751 			// since we only need a tiny little fraction of what could be used, this
752 			// is basically a no-op.
753 			D3DCAPS9 aCaps;
754 			if(FAILED(mpDirect3D9->GetDeviceCaps(nAdapter,D3DDEVTYPE_HAL,&aCaps)))
755 				return false;
756 			if(!(aCaps.MaxTextureWidth))
757 				return false;
758 			if(!(aCaps.MaxTextureHeight))
759 				return false;
760 			maPageSize = ::basegfx::B2IVector(aCaps.MaxTextureWidth,aCaps.MaxTextureHeight);
761 
762             // check device against white & blacklist entries
763             D3DADAPTER_IDENTIFIER9 aIdent;
764 			if(FAILED(mpDirect3D9->GetAdapterIdentifier(nAdapter,0,&aIdent)))
765 				return false;
766 
767             DXCanvasItem aConfigItem;
768             DXCanvasItem::DeviceInfo aInfo;
769             aInfo.nVendorId = aIdent.VendorId;
770             aInfo.nDeviceId = aIdent.DeviceId;
771             aInfo.nDeviceSubSysId = aIdent.SubSysId;
772             aInfo.nDeviceRevision = aIdent.Revision;
773 
774             aInfo.nDriverId = HIWORD(aIdent.DriverVersion.HighPart);
775             aInfo.nDriverVersion = LOWORD(aIdent.DriverVersion.HighPart);
776             aInfo.nDriverSubVersion = HIWORD(aIdent.DriverVersion.LowPart);
777             aInfo.nDriverBuildId = LOWORD(aIdent.DriverVersion.LowPart);
778 
779             if( !aConfigItem.isDeviceUsable(aInfo) )
780                 return false;
781 
782             if( aConfigItem.isBlacklistCurrentDevice() )
783             {
784                 aConfigItem.blacklistDevice(aInfo);
785                 return false;
786             }
787 
788             aConfigItem.adaptMaxTextureSize(maPageSize);
789 
790 			mbCanUseDynamicTextures = (aCaps.Caps2 & D3DCAPS2_DYNAMICTEXTURES) != 0;
791 
792             return true;
793         }
794 
795 
796 		//////////////////////////////////////////////////////////////////////////////////
797 		// DXRenderModule::createDevice
798 		//////////////////////////////////////////////////////////////////////////////////
799 
800 		bool DXRenderModule::createDevice()
801 		{
802 			// we expect that the caller provides us with a valid HWND
803 			ENSURE_OR_THROW( IsWindow(mhWnd),
804                               "DXRenderModule::createDevice() No valid HWND given." );
805 
806 			// we expect that the caller already created the direct3d9 object.
807 			ENSURE_OR_THROW( mpDirect3D9.is(),
808                               "DXRenderModule::createDevice() no direct3d?." );
809 
810 			// find the adapter identifier from the window.
811 			const UINT aAdapter(getAdapterFromWindow());
812 			if(aAdapter == static_cast<UINT>(-1))
813 				return false;
814 
815             // verify that device possibly works
816             if( !verifyDevice(aAdapter) )
817                 return false;
818 
819 			// query the display mode from the selected adapter.
820 			// we'll later request the backbuffer format to be same
821 			// same as the display format.
822 			D3DDISPLAYMODE d3ddm;
823 			mpDirect3D9->GetAdapterDisplayMode(aAdapter,&d3ddm);
824 
825 			// we need to use D3DSWAPEFFECT_COPY here since the canvas-api has
826 			// basically nothing to do with efficient resource handling. it tries
827 			// to avoid drawing whenevery possible, which is simply not the most
828 			// efficient way we could leverage the hardware in this case. it would
829 			// be far better to redraw the backbuffer each time we would like to
830 			// display the content of the backbuffer, but we need to face reality
831 			// here and follow how the canvas was designed.
832 
833 			// Strictly speaking, we don't need a full screen worth of
834 			// backbuffer here. We could also scale dynamically with
835 			// the current window size, but this will make it
836 			// necessary to temporarily have two buffers while copying
837 			// from the old to the new one. What's more, at the time
838 			// we need a larger buffer, DX might not have sufficient
839 			// resources available, and we're then left with too small
840 			// a back buffer, and no way of falling back to a
841 			// different canvas implementation.
842 			ZeroMemory( &mad3dpp, sizeof(mad3dpp) );
843             mad3dpp.BackBufferWidth = std::max(sal_Int32(maSize.getX()),
844                                                sal_Int32(d3ddm.Width));
845             mad3dpp.BackBufferHeight = std::max(sal_Int32(maSize.getY()),
846                                                 sal_Int32(d3ddm.Height));
847             mad3dpp.BackBufferCount = 1;
848 			mad3dpp.Windowed = TRUE;
849 			mad3dpp.SwapEffect = D3DSWAPEFFECT_COPY;
850 			mad3dpp.BackBufferFormat = d3ddm.Format;
851 			mad3dpp.EnableAutoDepthStencil = FALSE;
852 			mad3dpp.hDeviceWindow = mhWnd;
853 			mad3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE;
854 
855 			// now create the device, first try hardware vertex processing,
856 			// then software vertex processing. if both queries fail, we give up
857 			// and indicate failure.
858 			IDirect3DDevice9 *pDevice(NULL);
859 			if(FAILED(mpDirect3D9->CreateDevice(aAdapter,
860 												D3DDEVTYPE_HAL,
861 												mhWnd,
862 												D3DCREATE_HARDWARE_VERTEXPROCESSING|
863                                                 D3DCREATE_MULTITHREADED|D3DCREATE_FPU_PRESERVE,
864 												&mad3dpp,
865 												&pDevice)))
866 				if(FAILED(mpDirect3D9->CreateDevice(aAdapter,
867 													D3DDEVTYPE_HAL,
868 													mhWnd,
869 													D3DCREATE_SOFTWARE_VERTEXPROCESSING|
870                                                     D3DCREATE_MULTITHREADED|D3DCREATE_FPU_PRESERVE,
871 													&mad3dpp,
872 													&pDevice)))
873 					return false;
874 
875 			// got it, store it in a safe place...
876 			mpDevice=COMReference<IDirect3DDevice9>(pDevice);
877 
878 			// After CreateDevice, the first swap chain already exists, so just get it...
879 			IDirect3DSwapChain9 *pSwapChain(NULL);
880 			pDevice->GetSwapChain(0,&pSwapChain);
881 			mpSwapChain=COMReference<IDirect3DSwapChain9>(pSwapChain);
882             if( !mpSwapChain.is() )
883                 return false;
884 
885 			// clear the render target [which is the backbuffer in this case].
886 			// we are forced to do this once, and furthermore right now.
887 			// please note that this is only possible since we created the
888 			// backbuffer with copy semantics [the content is preserved after
889 			// calls to Present()], which is an unnecessarily expensive operation.
890 			LPDIRECT3DSURFACE9 pBackBuffer = NULL;
891 			mpSwapChain->GetBackBuffer(0,D3DBACKBUFFER_TYPE_MONO,&pBackBuffer);
892 			mpDevice->SetRenderTarget( 0, pBackBuffer );
893 			mpDevice->Clear(0,NULL,D3DCLEAR_TARGET,0,1.0f,0L);
894 			pBackBuffer->Release();
895 
896 			return true;
897 		}
898 
899 		//////////////////////////////////////////////////////////////////////////////////
900 		// DXRenderModule::createSystemMemorySurface
901 		//////////////////////////////////////////////////////////////////////////////////
902 
903 		COMReference<IDirect3DSurface9> DXRenderModule::createSystemMemorySurface( const ::basegfx::B2IVector& rSize )
904 		{
905 			if(isDisposed())
906 				return COMReference<IDirect3DSurface9>(NULL);
907 
908 			// please note that D3DFMT_X8R8G8B8 is the only format we're
909 			// able to choose here, since GetDC() doesn't support any
910 			// other 32bit-format.
911 			IDirect3DSurface9 *pSurface(NULL);
912 			if( FAILED(mpDevice->CreateOffscreenPlainSurface(
913                            rSize.getX(),
914                            rSize.getY(),
915                            D3DFMT_X8R8G8B8,
916                            D3DPOOL_SYSTEMMEM,
917                            &pSurface,
918                            NULL)) )
919             {
920 				throw lang::NoSupportException(
921 					::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
922                                          "Could not create offscreen surface - out of mem!") ),NULL);
923             }
924 
925 			return COMReference<IDirect3DSurface9>(pSurface);
926 		}
927 
928 		//////////////////////////////////////////////////////////////////////////////////
929 		// DXRenderModule::flip
930 		//////////////////////////////////////////////////////////////////////////////////
931 
932 		bool DXRenderModule::flip( const ::basegfx::B2IRectangle& rUpdateArea,
933 								   const ::basegfx::B2IRectangle& /*rCurrWindowArea*/ )
934 		{
935             // TODO(P2): get rid of those fine-grained locking
936 			::osl::MutexGuard aGuard( maMutex );
937 
938 			if(isDisposed() || !mpSwapChain.is())
939 				return false;
940 
941 			flushVertexCache();
942 
943             // TODO(P2): Might be faster to actually pass update area here
944             RECT aRect =
945                 {
946                     rUpdateArea.getMinX(),
947                     rUpdateArea.getMinY(),
948                     rUpdateArea.getMaxX(),
949                     rUpdateArea.getMaxY()
950                 };
951 			HRESULT hr(mpSwapChain->Present(&aRect,&aRect,NULL,NULL,0));
952 			if(FAILED(hr))
953 			{
954 				if(hr != D3DERR_DEVICELOST)
955 					return false;
956 
957                 // interestingly enough, sometimes the Reset() below
958                 // *still* causes DeviceLost errors. So, cycle until
959                 // DX was kind enough to really reset the device...
960                 do
961                 {
962                     mpVertexBuffer.reset();
963                     hr = mpDevice->Reset(&mad3dpp);
964                     if(SUCCEEDED(hr))
965                     {
966                         IDirect3DVertexBuffer9 *pVB(NULL);
967                         DWORD aFVF(D3DFVF_XYZRHW|D3DFVF_DIFFUSE|D3DFVF_TEX1);
968                         if( FAILED(mpDevice->CreateVertexBuffer(sizeof(dxvertex)*maNumVertices,
969                                                                 D3DUSAGE_DYNAMIC|D3DUSAGE_WRITEONLY,
970                                                                 aFVF,
971                                                                 D3DPOOL_DEFAULT,
972                                                                 &pVB,
973                                                                 NULL)) )
974                         {
975                             throw lang::NoSupportException(
976                                 ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
977                                                      "Could not create DirectX device - out of memory!")),NULL);
978                         }
979                         mpVertexBuffer=COMReference<IDirect3DVertexBuffer9>(pVB);
980 
981                         // retry after the restore
982                         if(SUCCEEDED(mpSwapChain->Present(&aRect,&aRect,NULL,NULL,0)))
983                             return true;
984                     }
985 
986                     TimeValue aTimeout;
987                     aTimeout.Seconds=1;
988                     aTimeout.Nanosec=0;
989                     osl_waitThread(&aTimeout);
990                 }
991                 while(hr == D3DERR_DEVICELOST);
992 
993 				return false;
994 			}
995 
996 			return true;
997 		}
998 
999 		//////////////////////////////////////////////////////////////////////////////////
1000 		// DXRenderModule::screenShot
1001 		//////////////////////////////////////////////////////////////////////////////////
1002 
1003 		void DXRenderModule::screenShot()
1004 		{
1005 		}
1006 
1007 		//////////////////////////////////////////////////////////////////////////////////
1008 		// DXRenderModule::resize
1009 		//////////////////////////////////////////////////////////////////////////////////
1010 
1011 		void DXRenderModule::resize( const ::basegfx::B2IRange& rect )
1012 		{
1013             // TODO(P2): get rid of those fine-grained locking
1014 			::osl::MutexGuard aGuard( maMutex );
1015 
1016 			if(isDisposed())
1017 				return;
1018 
1019 			// don't do anything if the size didn't change.
1020 			if(maSize.getX() == static_cast<sal_Int32>(rect.getWidth()) &&
1021 			   maSize.getY() == static_cast<sal_Int32>(rect.getHeight()))
1022 			   return;
1023 
1024 			// TODO(Q2): use numeric cast to prevent overflow
1025 			maSize.setX(static_cast<sal_Int32>(rect.getWidth()));
1026 			maSize.setY(static_cast<sal_Int32>(rect.getHeight()));
1027 
1028 			mpWindow->SetPosSizePixel(0,0,maSize.getX(),maSize.getY());
1029 
1030             // resize back buffer, if necessary
1031             // -------------------------------------------------------------
1032 
1033 			// don't attempt to create anything if the
1034 			// requested size is NULL.
1035 			if(!(maSize.getX()))
1036 				return;
1037 			if(!(maSize.getY()))
1038 				return;
1039 
1040             // backbuffer too small (might happen, if window is
1041             // maximized across multiple monitors)
1042             if( sal_Int32(mad3dpp.BackBufferWidth) < maSize.getX() ||
1043                 sal_Int32(mad3dpp.BackBufferHeight) < maSize.getY() )
1044             {
1045                 mad3dpp.BackBufferWidth = maSize.getX();
1046                 mad3dpp.BackBufferHeight = maSize.getY();
1047 
1048                 // clear before, save resources
1049                 mpSwapChain.reset();
1050 
1051                 IDirect3DSwapChain9 *pSwapChain(NULL);
1052                 if(FAILED(mpDevice->CreateAdditionalSwapChain(&mad3dpp,&pSwapChain)))
1053                     return;
1054                 mpSwapChain=COMReference<IDirect3DSwapChain9>(pSwapChain);
1055 
1056                 // clear the render target [which is the backbuffer in this case].
1057                 // we are forced to do this once, and furthermore right now.
1058                 // please note that this is only possible since we created the
1059                 // backbuffer with copy semantics [the content is preserved after
1060                 // calls to Present()], which is an unnecessarily expensive operation.
1061                 LPDIRECT3DSURFACE9 pBackBuffer = NULL;
1062                 mpSwapChain->GetBackBuffer(0,D3DBACKBUFFER_TYPE_MONO,&pBackBuffer);
1063                 mpDevice->SetRenderTarget( 0, pBackBuffer );
1064                 mpDevice->Clear(0,NULL,D3DCLEAR_TARGET,0,1.0f,0L);
1065                 pBackBuffer->Release();
1066             }
1067 		}
1068 
1069 		//////////////////////////////////////////////////////////////////////////////////
1070 		// DXRenderModule::getPageSize
1071 		//////////////////////////////////////////////////////////////////////////////////
1072 
1073 		::basegfx::B2IVector DXRenderModule::getPageSize()
1074 		{
1075             // TODO(P2): get rid of those fine-grained locking
1076 			::osl::MutexGuard aGuard( maMutex );
1077 			return maPageSize;
1078 		}
1079 
1080 		//////////////////////////////////////////////////////////////////////////////////
1081 		// DXRenderModule::createSurface
1082 		//////////////////////////////////////////////////////////////////////////////////
1083 
1084 		::canvas::ISurfaceSharedPtr DXRenderModule::createSurface( const ::basegfx::B2IVector& surfaceSize )
1085 		{
1086             // TODO(P2): get rid of those fine-grained locking
1087 			::osl::MutexGuard aGuard( maMutex );
1088 
1089 			if(isDisposed())
1090 				return ::canvas::ISurfaceSharedPtr();
1091 
1092 			const ::basegfx::B2IVector& rPageSize( getPageSize() );
1093 			::basegfx::B2ISize aSize(surfaceSize);
1094 			if(!(aSize.getX()))
1095 				aSize.setX(rPageSize.getX());
1096 			if(!(aSize.getY()))
1097 				aSize.setY(rPageSize.getY());
1098 
1099 			if(mpTexture.use_count() == 1)
1100 				return mpTexture;
1101 
1102 			return ::canvas::ISurfaceSharedPtr( new DXSurface(*this,aSize) );
1103 		}
1104 
1105 		//////////////////////////////////////////////////////////////////////////////////
1106 		// DXRenderModule::beginPrimitive
1107 		//////////////////////////////////////////////////////////////////////////////////
1108 
1109 		void DXRenderModule::beginPrimitive( PrimitiveType eType )
1110 		{
1111             // TODO(P2): get rid of those fine-grained locking
1112 			::osl::MutexGuard aGuard( maMutex );
1113 
1114 			if(isDisposed())
1115 				return;
1116 
1117 			ENSURE_OR_THROW( !mnBeginSceneCount,
1118                               "DXRenderModule::beginPrimitive(): nested call" );
1119 
1120 			++mnBeginSceneCount;
1121 			meType=eType;
1122 			mnCount=0;
1123 		}
1124 
1125 		//////////////////////////////////////////////////////////////////////////////////
1126 		// DXRenderModule::endPrimitive
1127 		//////////////////////////////////////////////////////////////////////////////////
1128 
1129 		void DXRenderModule::endPrimitive()
1130 		{
1131             // TODO(P2): get rid of those fine-grained locking
1132 			::osl::MutexGuard aGuard( maMutex );
1133 
1134 			if(isDisposed())
1135 				return;
1136 
1137 			--mnBeginSceneCount;
1138 			meType=PRIMITIVE_TYPE_UNKNOWN;
1139 			mnCount=0;
1140 		}
1141 
1142 		//////////////////////////////////////////////////////////////////////////////////
1143 		// DXRenderModule::pushVertex
1144 		//////////////////////////////////////////////////////////////////////////////////
1145 
1146 		void DXRenderModule::pushVertex( const ::canvas::Vertex& vertex )
1147 		{
1148             // TODO(P2): get rid of those fine-grained locking
1149 			::osl::MutexGuard aGuard( maMutex );
1150 
1151 			if(isDisposed())
1152 				return;
1153 
1154 			switch(meType)
1155 			{
1156 				case PRIMITIVE_TYPE_TRIANGLE:
1157                 {
1158 					maVertexCache.push_back(vertex);
1159 					++mnCount;
1160 					mnCount &= 3;
1161 					break;
1162                 }
1163 
1164 				case PRIMITIVE_TYPE_QUAD:
1165                 {
1166 					if(mnCount == 3)
1167 					{
1168 						const std::size_t size(maVertexCache.size());
1169 						::canvas::Vertex v0(maVertexCache[size-1]);
1170 						::canvas::Vertex v2(maVertexCache[size-3]);
1171 						maVertexCache.push_back(v0);
1172 						maVertexCache.push_back(vertex);
1173 						maVertexCache.push_back(v2);
1174 						mnCount=0;
1175 					}
1176 					else
1177 					{
1178 						maVertexCache.push_back(vertex);
1179 						++mnCount;
1180 					}
1181 					break;
1182                 }
1183 
1184                 default:
1185                     OSL_ENSURE(false,
1186                                "DXRenderModule::pushVertex(): unexpected primitive type");
1187                     break;
1188 			}
1189 		}
1190 
1191 		//////////////////////////////////////////////////////////////////////////////////
1192 		// DXRenderModule::isError
1193 		//////////////////////////////////////////////////////////////////////////////////
1194 
1195 		bool DXRenderModule::isError()
1196 		{
1197             // TODO(P2): get rid of those fine-grained locking
1198 			::osl::MutexGuard aGuard( maMutex );
1199 
1200 			return mbError;
1201 		}
1202 
1203 		//////////////////////////////////////////////////////////////////////////////////
1204 		// DXRenderModule::getAdapterFromWindow
1205 		//////////////////////////////////////////////////////////////////////////////////
1206 
1207 		UINT DXRenderModule::getAdapterFromWindow()
1208 		{
1209 			HMONITOR hMonitor(aMonitorSupport.MonitorFromWindow(mhWnd));
1210 			UINT aAdapterCount(mpDirect3D9->GetAdapterCount());
1211 			for(UINT i=0; i<aAdapterCount; ++i)
1212 				if(hMonitor == mpDirect3D9->GetAdapterMonitor(i))
1213 					return i;
1214 			return static_cast<UINT>(-1);
1215 		}
1216 
1217 		//////////////////////////////////////////////////////////////////////////////////
1218 		// DXRenderModule::commitVertexCache
1219 		//////////////////////////////////////////////////////////////////////////////////
1220 
1221 		void DXRenderModule::commitVertexCache()
1222 		{
1223 			if(maReadIndex != maWriteIndex)
1224 			{
1225 				const std::size_t nVertexStride = sizeof(dxvertex);
1226 				const unsigned int nNumVertices = maWriteIndex-maReadIndex;
1227 				const unsigned int nNumPrimitives = nNumVertices / 3;
1228 
1229 				if(FAILED(mpDevice->SetStreamSource(0,mpVertexBuffer.get(),0,nVertexStride)))
1230 					return;
1231 
1232 				if(FAILED(mpDevice->SetFVF(D3DFVF_XYZRHW|D3DFVF_DIFFUSE|D3DFVF_TEX1)))
1233 					return;
1234 
1235 				if(FAILED(mpDevice->BeginScene()))
1236 					return;
1237 
1238 				mbError |= FAILED(mpDevice->DrawPrimitive(D3DPT_TRIANGLELIST,maReadIndex,nNumPrimitives));
1239 				mbError |= FAILED(mpDevice->EndScene());
1240 
1241 				maReadIndex += nNumVertices;
1242 			}
1243 		}
1244 
1245 		//////////////////////////////////////////////////////////////////////////////////
1246 		// DXRenderModule::flushVertexCache
1247 		//////////////////////////////////////////////////////////////////////////////////
1248 
1249 		void DXRenderModule::flushVertexCache()
1250 		{
1251 			if(!(maVertexCache.size()))
1252 				return;
1253 
1254 			mbError=true;
1255 
1256 			if( FAILED(mpDevice->SetRenderState(D3DRS_LIGHTING,FALSE)))
1257 				return;
1258 
1259 			// enable texture alpha blending
1260 			if( FAILED(mpDevice->SetRenderState(D3DRS_ALPHABLENDENABLE,TRUE)))
1261 				return;
1262 
1263 			mpDevice->SetSamplerState(0,D3DSAMP_MAGFILTER,D3DTEXF_LINEAR);
1264 			mpDevice->SetSamplerState(0,D3DSAMP_MINFILTER,D3DTEXF_LINEAR);
1265 			mpDevice->SetSamplerState(0,D3DSAMP_ADDRESSU ,D3DTADDRESS_CLAMP );
1266 			mpDevice->SetSamplerState(0,D3DSAMP_ADDRESSV ,D3DTADDRESS_CLAMP );
1267 
1268 			// configure the fixed-function pipeline.
1269 			// the only 'feature' we need here is to modulate the alpha-channels
1270 			// from the texture and the interpolated diffuse color. the result
1271 			// will then be blended with the backbuffer.
1272 			// fragment color = texture color * diffuse.alpha.
1273 			mpDevice->SetTextureStageState(0,D3DTSS_ALPHAOP,D3DTOP_MODULATE);
1274 			mpDevice->SetTextureStageState(0,D3DTSS_ALPHAARG1,D3DTA_TEXTURE);
1275 			mpDevice->SetTextureStageState(0,D3DTSS_ALPHAARG2,D3DTA_DIFFUSE);
1276 
1277 			// normal combination of object...
1278 			if( FAILED(mpDevice->SetRenderState(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA)) )
1279 				return;
1280 
1281 			// ..and background color
1282 			if( FAILED(mpDevice->SetRenderState(D3DRS_DESTBLEND,D3DBLEND_INVSRCALPHA)) )
1283 				return;
1284 
1285 			// disable backface culling; this enables us to mirror sprites
1286 			// by simply reverting the triangles, which, with enabled
1287 			// culling, would be invisible otherwise
1288 			if( FAILED(mpDevice->SetRenderState(D3DRS_CULLMODE,D3DCULL_NONE)) )
1289 				return;
1290 
1291 			mbError=false;
1292 
1293 			std::size_t nSize(maVertexCache.size());
1294 			const std::size_t nVertexStride = sizeof(dxvertex);
1295 
1296 			const ::basegfx::B2IVector aPageSize(getPageSize());
1297 			const float nHalfPixelSizeX(0.5f/aPageSize.getX());
1298 			const float nHalfPixelSizeY(0.5f/aPageSize.getY());
1299             vertexCache_t::const_iterator it(maVertexCache.begin());
1300 
1301             while( nSize )
1302             {
1303                 DWORD dwLockFlags(D3DLOCK_NOOVERWRITE);
1304 
1305                 // Check to see if there's space for the current set of
1306                 // vertices in the buffer.
1307                 if( maNumVertices - maWriteIndex < nSize )
1308                 {
1309                     commitVertexCache();
1310                     dwLockFlags = D3DLOCK_DISCARD;
1311                     maWriteIndex = 0;
1312                     maReadIndex = 0;
1313                 }
1314 
1315                 dxvertex *vertices(NULL);
1316                 const std::size_t nNumVertices(
1317                     std::min(maNumVertices - maWriteIndex,
1318                              nSize));
1319                 if(FAILED(mpVertexBuffer->Lock(maWriteIndex*nVertexStride,
1320                                                nNumVertices*nVertexStride,
1321                                                (void **)&vertices,
1322                                                dwLockFlags)))
1323                     return;
1324 
1325                 std::size_t nIndex(0);
1326                 while( nIndex < nNumVertices )
1327                 {
1328                     dxvertex &dest = vertices[nIndex++];
1329                     dest.x=it->x;
1330                     dest.y=it->y;
1331                     dest.z=it->z;
1332                     dest.rhw=1;
1333                     const sal_uInt32 alpha(static_cast<sal_uInt32>(it->a*255.0f));
1334                     dest.diffuse=D3DCOLOR_ARGB(alpha,255,255,255);
1335                     dest.u=static_cast<float>(it->u + nHalfPixelSizeX);
1336                     dest.v=static_cast<float>(it->v + nHalfPixelSizeY);
1337                     ++it;
1338                 }
1339 
1340                 mpVertexBuffer->Unlock();
1341 
1342                 // Advance to the next position in the vertex buffer.
1343                 maWriteIndex += nNumVertices;
1344                 nSize -= nNumVertices;
1345 
1346                 commitVertexCache();
1347             }
1348 
1349             maVertexCache.clear();
1350 		}
1351 	}
1352 
1353 	//////////////////////////////////////////////////////////////////////////////////
1354 	// createRenderModule
1355 	//////////////////////////////////////////////////////////////////////////////////
1356 
1357 	IDXRenderModuleSharedPtr createRenderModule( const ::Window& rParent )
1358 	{
1359 		return IDXRenderModuleSharedPtr( new DXRenderModule(rParent) );
1360 	}
1361 }
1362 
1363 #endif
1364