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source: OGRE/trunk/ogrenew/RenderSystems/Direct3D7/src/OgreD3D7RenderSystem.cpp @ 657

Revision 657, 114.1 KB checked in by mattausch, 18 years ago (diff)
added ogre dependencies and patched ogre sources

Line
1	/*
2	-----------------------------------------------------------------------------
3	This source file is part of OGRE
4	(Object-oriented Graphics Rendering Engine)
5	For the latest info, see http://ogre.sourceforge.net/
6
7	Copyright (c) 2000-2005 The OGRE Team
8	Also see acknowledgements in Readme.html
9
10	This program is free software; you can redistribute it and/or modify it under
11	the terms of the GNU Lesser General Public License as published by the Free Software
12	Foundation; either version 2 of the License, or (at your option) any later
13	version.
14
15	This program is distributed in the hope that it will be useful, but WITHOUT
16	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19	You should have received a copy of the GNU Lesser General Public License along with
20	this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21	Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22	http://www.gnu.org/copyleft/lesser.txt.
23	-----------------------------------------------------------------------------
24	*/
25	#include <malloc.h>
26	#include "OgreD3D7RenderSystem.h"
27	#include "OgreDDDriver.h"
28	#include "OgreD3D7Device.h"
29	#include "OgreD3D7DeviceList.h"
30	#include "OgreDDDriverList.h"
31	#include "OgreDDVideoModeList.h"
32	#include "OgreDDVideoMode.h"
33	#include "OgreRenderWindow.h"
34	#include "OgreLogManager.h"
35	#include "OgreRenderSystem.h"
36	#include "OgreException.h"
37	#include "OgreSceneManager.h"
38	#include "OgreD3D7TextureManager.h"
39	#include "OgreViewport.h"
40	#include "OgreLight.h"
41	#include "OgreMatrix4.h"
42	#include "OgreMath.h"
43	#include "OgreD3D7RenderWindow.h"
44	#include "OgreFrustum.h"
45	#include "OgreD3D7GpuProgramManager.h"
46	#include "OgreStringConverter.h"
47
48	namespace Ogre {
49	const Matrix4 PROJECTIONCLIPSPACE2DTOIMAGESPACE_PERSPECTIVE(
50	0.5, 0, 0, -0.5,
51	0, -0.5, 0, -0.5,
52	0, 0, 0, -1,
53	0, 0, 0, 1);
54
55	const Matrix4 PROJECTIONCLIPSPACE2DTOIMAGESPACE_ORTHO(
56	-0.5, 0, 0, -0.5,
57	0, 0.5, 0, -0.5,
58	0, 0, 0, -1,
59	0, 0, 0, 1);
60
61	//-----------------------------------------------------------------------
62	D3DRenderSystem::D3DRenderSystem(HINSTANCE hInstance)
63	{
64	OgreGuard( "D3DRenderSystem::D3DRenderSystem" );
65
66	LogManager::getSingleton().logMessage(getName() + " created.");
67
68	mlpD3DDevice = NULL;
69	// Reset driver list
70	mDriverList = NULL;
71	mActiveDDDriver = NULL;
72	mhInstance = hInstance;
73	mHardwareBufferManager = NULL;
74	mGpuProgramManager = NULL;
75	mDeviceLost = false;
76
77	initConfigOptions();
78
79	// Initialise D3DX library
80	D3DXInitialize();
81
82	// set stages desc. to defaults
83	for (int n = 0; n < OGRE_MAX_TEXTURE_LAYERS; n++)
84	{
85	mTexStageDesc[n].autoTexCoordType = TEXCALC_NONE;
86	mTexStageDesc[n].coordIndex = 0;
87	mTexStageDesc[n].texType = D3D_TEX_TYPE_NORMAL;
88	mTexStageDesc[n].pTex = NULL;
89	}
90
91	mCurrentLights = 0;
92
93	mEventNames.push_back("DeviceLost");
94	mEventNames.push_back("DeviceRestored");
95
96	OgreUnguard();
97	}
98
99	//-----------------------------------------------------------------------
100	D3DRenderSystem::~D3DRenderSystem()
101	{
102	OgreGuard( "D3DRenderSystem::~D3DRenderSystem" );
103	shutdown();
104
105	SAFE_DELETE(mTextureManager);
106	SAFE_DELETE(mDriverList);
107	SAFE_DELETE(mHardwareBufferManager);
108	SAFE_DELETE(mGpuProgramManager);
109
110	D3DXUninitialize();
111	LogManager::getSingleton().logMessage(getName() + " destroyed.");
112
113	OgreUnguard();
114	}
115
116	//-----------------------------------------------------------------------
117	const String& D3DRenderSystem::getName(void) const
118	{
119	static String strName("Direct3D7 Rendering Subsystem");
120	return strName;
121	}
122
123	//-----------------------------------------------------------------------
124	void D3DRenderSystem::initConfigOptions(void)
125	{
126	OgreGuard( "D3DRenderSystem::initConfigOptions" );
127
128	DDDriverList* ddList;
129	DDDriver* dd;
130
131	ConfigOption optDevice;
132	ConfigOption optVideoMode;
133	ConfigOption optFullScreen;
134	ConfigOption optVSync;
135
136	ddList = this->getDirectDrawDrivers();
137
138	// Create option for devices
139	optDevice.name = "Rendering Device";
140	optDevice.currentValue = "";
141	optDevice.possibleValues.clear();
142	optDevice.immutable = false;
143
144	// Option for video modes
145	optVideoMode.name = "Video Mode";
146	optVideoMode.currentValue = "";
147	optVideoMode.immutable = false;
148
149	// Option for full screen
150	optFullScreen.name = "Full Screen";
151	optFullScreen.possibleValues.push_back("Yes");
152	optFullScreen.possibleValues.push_back("No");
153	optFullScreen.currentValue = "Yes";
154
155
156	unsigned k = ddList->count();
157	// First, get DirectDraw driver options
158	for( unsigned j = 0; j < ddList->count(); j++ )
159	{
160	dd = ddList->item(j);
161	// Add to device option list
162	optDevice.possibleValues.push_back( dd->DriverDescription() );
163
164	// Make first one default
165	if( j==0 )
166	{
167	optDevice.currentValue = dd->DriverDescription();
168
169	}
170
171
172	}
173
174	// VSync option
175	optVSync.name = "VSync";
176	optVSync.immutable = false;
177	optVSync.possibleValues.push_back("Yes");
178	optVSync.possibleValues.push_back("No");
179	optVSync.currentValue = "Yes";
180
181
182	mOptions[optDevice.name] = optDevice;
183	mOptions[optVideoMode.name] = optVideoMode;
184	mOptions[optFullScreen.name] = optFullScreen;
185	mOptions[optVSync.name] = optVSync;
186
187	// Set default-based settings
188	refreshDDSettings();
189
190	OgreUnguard();
191	}
192
193	//-----------------------------------------------------------------------
194	void D3DRenderSystem::refreshDDSettings(void)
195	{
196	OgreGuard( "D3DRenderSystem::refreshDDSettings" );
197
198	DDVideoMode* vid;
199	ConfigOption* optVideoMode;
200	ConfigOption* optFullScreen;
201	DDDriver* dd;
202
203	// Stuffs DD-Driver specific settings
204
205	// Find DD Driver selected in options
206	ConfigOptionMap::iterator opt = mOptions.find("Rendering Device");
207
208	if( opt != mOptions.end() )
209	{
210	for( unsigned j = 0; j < getDirectDrawDrivers()->count(); j++ )
211	{
212	dd = getDirectDrawDrivers()->item(j);
213	if( dd->DriverDescription() == opt->second.currentValue )
214	break;
215	}
216
217	// Get fullScreen and Video mode options
218	opt = mOptions.find("Video Mode");
219	optVideoMode = &opt->second;
220	opt = mOptions.find("Full Screen");
221	optFullScreen = &opt->second;
222
223	// Full screen forced?
224	if (!(dd->CanRenderWindowed()))
225	{
226	setConfigOption("Full Screen", "Yes");
227	optFullScreen->immutable = true;
228	}
229	else
230	optFullScreen->immutable = false;
231
232	// Get video modes for this device
233	optVideoMode->possibleValues.clear();
234
235	for( unsigned k = 0; k<dd->getVideoModeList()->count(); k++ )
236	{
237	vid = dd->getVideoModeList()->item(k);
238	optVideoMode->possibleValues.push_back(vid->Description());
239	}
240	}
241
242	OgreUnguard();
243	}
244
245
246	//-----------------------------------------------------------------------
247	ConfigOptionMap& D3DRenderSystem::getConfigOptions(void)
248	{
249	// Return a COPY of the current config options
250	return mOptions;
251
252	}
253
254	//-----------------------------------------------------------------------
255	void D3DRenderSystem::setConfigOption(const String &name, const String &value)
256	{
257	OgreGuard( "D3DRenderSystem::setConfigOption" );
258
259	StringUtil::StrStreamType str;
260	str << "RenderSystem Option: " << name << " = " << value;
261	LogManager::getSingleton().logMessage(str.str());
262
263	// Find option
264	ConfigOptionMap::iterator it = mOptions.find(name);
265
266	// Update
267	if( it != mOptions.end())
268	it->second.currentValue = value;
269	else
270	{
271	str.clear();
272	str << "Option named " << name << " does not exist.";
273	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
274	str.str(), "D3DRenderSystem::setConfigOption");
275	}
276
277	// Refresh other options if DD Driver changed
278	if (name == "Rendering Device")
279	refreshDDSettings();
280
281	if (name == "Full Screen")
282	{
283	if (value == "No")
284	{
285	// Video mode is not applicable
286	it = mOptions.find("Video Mode");
287	it->second.currentValue = "N/A";
288	it->second.immutable = true;
289	}
290	else
291	{
292	// Video mode is applicable
293	it = mOptions.find("Video Mode");
294	// default to 640 x 480 x 16
295	it->second.currentValue = "640 x 480 @ 16-bit colour";
296	it->second.immutable = false;
297	}
298	}
299	if( name == "VSync" )
300	{
301	if (value == "Yes")
302	mVSync = true;
303	else
304	mVSync = false;
305	}
306
307	OgreUnguard();
308	}
309	//-----------------------------------------------------------------------
310	String D3DRenderSystem::validateConfigOptions(void)
311	{
312	// Check video mode specified in full screen mode
313	ConfigOptionMap::iterator o = mOptions.find("Full Screen");
314	if (o->second.currentValue == "Yes")
315	{
316	// Check video mode
317	o = mOptions.find("Video Mode");
318	if (o->second.currentValue == "")
319	{
320	return "A video mode must be selected for running in full-screen mode.";
321	}
322	}
323
324	o = mOptions.find( "Rendering Device" );
325	bool foundDriver = false;
326	DDDriverList* driverList = getDirectDrawDrivers();
327	for( ushort j=0; j < driverList->count(); j++ )
328	{
329	if( driverList->item(j)->DriverDescription() == o->second.currentValue )
330	{
331	foundDriver = true;
332	break;
333	}
334	}
335	if (!foundDriver)
336	{
337	// Just pick the first driver
338	setConfigOption("Rendering Device", driverList->item(0)->DriverDescription());
339	return "Your DirectX driver name has changed since the last time you ran OGRE; "
340	"the 'Rendering Device' has been changed.";
341	}
342	return "";
343
344	}
345	//-----------------------------------------------------------------------
346	RenderWindow* D3DRenderSystem::initialise(bool autoCreateWindow, const String& windowTitle)
347	{
348	RenderWindow* autoWindow = 0;
349
350
351	LogManager::getSingleton().logMessage(
352	"***************************************\n"
353	"* Direct3D Subsystem Initialising *\n"
354	"***************************************" );
355
356	// ---------------------------
357	// Init using current settings
358	// ---------------------------
359
360	// DirectDraw driver
361	mActiveDDDriver = 0;
362	ConfigOptionMap::iterator opt = mOptions.find("Rendering Device");
363	for( unsigned j = 0; j<getDirectDrawDrivers()->count(); j++ )
364	{
365	if (getDirectDrawDrivers()->item(j)->DriverDescription() == opt->second.currentValue)
366	{
367	mActiveDDDriver = getDirectDrawDrivers()->item(j);
368	break;
369	}
370	}
371
372	if (!mActiveDDDriver)
373	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Problems finding requested DirectDraw driver!",
374	"D3DRenderSystem::initialise");
375
376
377	// Sort out the creation of a new window if required
378	if (autoCreateWindow)
379	{
380	// Full screen?
381	bool fullScreen;
382	opt = mOptions.find("Full Screen");
383	if( opt == mOptions.end() )
384	OGRE_EXCEPT(999, "Can't find full screen option!",
385	"D3DRenderSystem::initialise");
386	if (opt->second.currentValue == "Yes")
387	fullScreen = true;
388	else
389	fullScreen = false;
390
391	// Get video mode
392	DDVideoMode* vid;
393	unsigned int height, width, colourDepth;
394
395	vid = 0;
396	String temp;
397	if (fullScreen)
398	{
399	opt = mOptions.find("Video Mode");
400
401	for( unsigned j=0; j<mActiveDDDriver->getVideoModeList()->count(); j++ )
402	{
403	temp = mActiveDDDriver->getVideoModeList()->item(j)->Description();
404	if (temp == opt->second.currentValue)
405	{
406	vid = mActiveDDDriver->getVideoModeList()->item(j);
407	break;
408	}
409	}
410
411	if (!vid)
412	OGRE_EXCEPT(9999, "Can't find requested video mode.",
413	"D3DRenderSystem::initilise");
414	width = vid->mWidth;
415	height = vid->mHeight;
416	colourDepth = vid->mColourDepth;
417
418	}
419	else
420	{
421	// Notional height / width
422	width = 800;
423	height = 600;
424	colourDepth = 0; // colour depth based on desktop
425	}
426
427	// Create myself a window
428	NameValuePairList params;
429	params["colourDepth"] = StringConverter::toString(colourDepth);
430	params["vsync"] = StringConverter::toString(mVSync);
431	autoWindow = this->createRenderWindow(windowTitle, width, height, fullScreen, &params);
432
433	// If we have 16bit depth buffer enable w-buffering.
434	assert( autoWindow );
435	if ( autoWindow->getColourDepth() == 16 )
436	{
437	mWBuffer = true;
438	}
439	else
440	{
441	mWBuffer = false;
442	}
443
444	}
445
446	opt = mOptions.find("VSync");
447	if (opt!=mOptions.end())
448	{
449	if (opt->second.currentValue == "Yes")
450	{
451	setWaitForVerticalBlank(true);
452	}
453	else
454	{
455	setWaitForVerticalBlank(false);
456	}
457	}
458
459
460	LogManager::getSingleton().logMessage("*****************************************");
461	LogManager::getSingleton().logMessage("* Direct3D Subsystem Initialised Ok *");
462	LogManager::getSingleton().logMessage("*****************************************");
463
464	// call superclass method
465	RenderSystem::initialise(autoCreateWindow);
466
467	// Create buffer manager
468	mHardwareBufferManager = new D3D7HardwareBufferManager();
469	// Create dummy gpu manager
470	mGpuProgramManager = new D3D7GpuProgramManager();
471
472
473	return autoWindow;
474
475	}
476
477	//-----------------------------------------------------------------------
478	void D3DRenderSystem::reinitialise(void)
479	{
480	this->shutdown();
481	this->initialise(true);
482	}
483
484
485	//-----------------------------------------------------------------------
486	void D3DRenderSystem::shutdown(void)
487	{
488	RenderSystem::shutdown();
489
490	// Cleanup
491	// Release all DirectX resources
492	//D3DTextr_InvalidateAllTextures();
493	if (mActiveDDDriver)
494	{
495	mActiveDDDriver->Cleanup();
496	}
497
498	// Delete system objects
499	SAFE_DELETE(mDriverList);
500
501	mActiveDDDriver = NULL;
502
503
504
505	// Write termination message
506	LogManager::getSingleton().logMessage("--* Direct3D Subsystem shutting down cleanly.");
507
508
509	}
510
511	//-----------------------------------------------------------------------
512	void D3DRenderSystem::setAmbientLight(float r, float g, float b)
513	{
514	// Call D3D
515	D3DCOLOR col = D3DRGB(r,g,b);
516
517	HRESULT hr = __SetRenderState(D3DRENDERSTATE_AMBIENT, col);
518	if (FAILED(hr))
519	OGRE_EXCEPT(hr, "Error setting ambient light.", "D3DRenderSystem::setAmbientLight");
520	}
521
522	//-----------------------------------------------------------------------
523	void D3DRenderSystem::setShadingType(ShadeOptions so)
524	{
525	D3DSHADEMODE d3dMode;
526	switch(so)
527	{
528	case SO_FLAT:
529	d3dMode = D3DSHADE_FLAT;
530	break;
531	case SO_GOURAUD:
532	d3dMode = D3DSHADE_GOURAUD;
533	break;
534	case SO_PHONG:
535	d3dMode = D3DSHADE_PHONG;
536	break;
537
538	}
539
540	HRESULT hr = __SetRenderState(D3DRENDERSTATE_SHADEMODE, d3dMode);
541	if (FAILED(hr))
542	OGRE_EXCEPT(hr, "Error setting shading mode.", "D3DRenderSystem::setShadingType");
543
544	}
545
546
547	//-----------------------------------------------------------------------
548	RenderWindow* D3DRenderSystem::createRenderWindow(const String &name,
549	unsigned int width, unsigned int height, bool fullScreen,
550	const NameValuePairList *miscParams)
551	{
552	static bool firstWindow = true;
553	OgreGuard( "D3DRenderSystem::createRenderWindow" );
554
555	String msg;
556
557	// Make sure we don't already have a render target of the
558	// same name as the one supplied
559	if( mRenderTargets.find( name ) != mRenderTargets.end() )
560	{
561	msg = msg + "A render target of the same name (" + name + ") already "
562	"exists. You cannot create a new window with this name.";
563	OGRE_EXCEPT(999,msg,"D3DRenderSystem::createRenderWindow");
564	}
565
566	RenderWindow* win = new D3D7RenderWindow(mhInstance, mActiveDDDriver);
567	// Create window, supplying DD interface & hInstance
568	win->create(name, width, height, fullScreen, miscParams);
569
570	attachRenderTarget( *win );
571
572	// If this is the first window, get the D3D device
573	// and create the texture manager, setup caps
574	if (firstWindow)
575	{
576	win->getCustomAttribute("D3DDEVICE", &mlpD3DDevice);
577	// Get caps
578	mlpD3DDevice->GetCaps(&mD3DDeviceDesc);
579	// Create my texture manager for use by others
580	// Note this is a Singleton; pointer is held static by superclass
581	mTextureManager = new D3DTextureManager(mlpD3DDevice);
582
583	// Check for hardware stencil support
584	// Get render target, then depth buffer and check format
585	LPDIRECTDRAWSURFACE7 lpTarget;
586	win->getCustomAttribute("DDBACKBUFFER", &lpTarget);
587	DDSCAPS2 ddscaps;
588	ZeroMemory(&ddscaps, sizeof(DDSCAPS2));
589	ddscaps.dwCaps = DDSCAPS_ZBUFFER;
590	lpTarget->GetAttachedSurface(&ddscaps, &lpTarget);
591	lpTarget->Release();
592	DDSURFACEDESC2 ddsd;
593	ddsd.dwSize = sizeof(DDSURFACEDESC2);
594	lpTarget->GetSurfaceDesc(&ddsd);
595	DWORD stencil = ddsd.ddpfPixelFormat.dwStencilBitDepth;
596	if(stencil > 0)
597	{
598	mCapabilities->setCapability(RSC_HWSTENCIL);
599	mCapabilities->setStencilBufferBitDepth(stencil);
600	if ((mD3DDeviceDesc.dwStencilCaps & D3DSTENCILCAPS_INCR) &&
601	(mD3DDeviceDesc.dwStencilCaps & D3DSTENCILCAPS_DECR))
602	mCapabilities->setCapability(RSC_STENCIL_WRAP);
603	}
604
605	// Anisotropy?
606	if (mD3DDeviceDesc.dwMaxAnisotropy > 1)
607	mCapabilities->setCapability(RSC_ANISOTROPY);
608	// Blending between stages supported
609	mCapabilities->setCapability(RSC_BLENDING);
610	// Cubemapping
611	if (mD3DDeviceDesc.dpcTriCaps.dwTextureCaps & D3DPTEXTURECAPS_CUBEMAP)
612	mCapabilities->setCapability(RSC_CUBEMAPPING);
613
614	// DOT3
615	if (mD3DDeviceDesc.dwTextureOpCaps & D3DTEXOPCAPS_DOTPRODUCT3)
616	mCapabilities->setCapability(RSC_DOT3);
617
618	// Set the number of texture units based on details from current device
619	mCapabilities->setNumTextureUnits(mD3DDeviceDesc.wMaxSimultaneousTextures);
620
621	Log* defaultLog = LogManager::getSingleton().getDefaultLog();
622	if (defaultLog)
623	{
624	mCapabilities->log(defaultLog);
625	}
626
627	firstWindow = false;
628	}
629
630	OgreUnguardRet( win );
631	}
632
633	RenderTexture * D3DRenderSystem::createRenderTexture( const String & name, unsigned int width, unsigned int height,
634	TextureType texType, PixelFormat internalFormat, const NameValuePairList *miscParams )
635	{
636	RenderTexture * rt = new D3D7RenderTexture( name, width, height, texType, internalFormat, miscParams );
637	attachRenderTarget( *rt );
638	return rt;
639	}
640
641	//-----------------------------------------------------------------------
642	// Low-level overridden members
643	//-----------------------------------------------------------------------
644	//---------------------------------------------------------------------
645	void D3DRenderSystem::_useLights(const LightList& lights, unsigned short limit)
646	{
647	LightList::const_iterator i, iend;
648	iend = lights.end();
649	unsigned short num = 0;
650	for (i = lights.begin(); i != iend && num < limit; ++i, ++num)
651	{
652	setD3DLight(num, *i);
653	}
654	// Disable extra lights
655	for (; num < mCurrentLights; ++num)
656	{
657	setD3DLight(num, NULL);
658	}
659	mCurrentLights = std::min(limit, static_cast<unsigned short>(lights.size()));
660
661	}
662	//-----------------------------------------------------------------------
663	void D3DRenderSystem::setD3DLight(size_t index, Light* lt)
664	{
665	// Add to D3D
666	HRESULT hr;
667	D3DLIGHT7 d3dLight;
668
669	if (!lt)
670	{
671	hr = mlpD3DDevice->LightEnable(index, FALSE);
672	if (FAILED(hr))
673	OGRE_EXCEPT(hr, "Unable to disable light.", "D3DRenderSystem::setD3DLight");
674	}
675	else
676	{
677	switch (lt->getType())
678	{
679	case Light::LT_POINT:
680	d3dLight.dltType = D3DLIGHT_POINT;
681	break;
682	case Light::LT_DIRECTIONAL:
683	d3dLight.dltType = D3DLIGHT_DIRECTIONAL;
684	break;
685	case Light::LT_SPOTLIGHT:
686	d3dLight.dltType = D3DLIGHT_SPOT;
687	d3dLight.dvFalloff = lt->getSpotlightFalloff();
688	d3dLight.dvTheta = lt->getSpotlightInnerAngle().valueRadians();
689	d3dLight.dvPhi = lt->getSpotlightOuterAngle().valueRadians();
690	break;
691	}
692
693	// Colours
694	ColourValue col;
695	col = lt->getDiffuseColour();
696	d3dLight.dcvDiffuse.r = col.r;
697	d3dLight.dcvDiffuse.g = col.g;
698	d3dLight.dcvDiffuse.b = col.b;
699	d3dLight.dcvDiffuse.a = col.a;
700
701	col = lt->getSpecularColour();
702	d3dLight.dcvSpecular.r = col.r;
703	d3dLight.dcvSpecular.g = col.g;
704	d3dLight.dcvSpecular.b = col.b;
705	d3dLight.dcvSpecular.a = col.a;
706
707	// Never use ambient for a movable light
708	d3dLight.dcvAmbient.r = 0.0;
709	d3dLight.dcvAmbient.g = 0.0;
710	d3dLight.dcvAmbient.b = 0.0;
711	d3dLight.dcvAmbient.a = 0.0;
712
713	// Position (Irrelevant for directional)
714	Vector3 vec;
715	if (lt->getType() != Light::LT_DIRECTIONAL)
716	{
717	vec = lt->getDerivedPosition();
718
719	d3dLight.dvPosition.x = vec.x;
720	d3dLight.dvPosition.y = vec.y;
721	d3dLight.dvPosition.z = vec.z;
722	}
723	// Direction (Irrelevant for point lights)
724	if (lt->getType() != Light::LT_POINT)
725	{
726	vec = lt->getDerivedDirection();
727	d3dLight.dvDirection.x = vec.x;
728	d3dLight.dvDirection.y = vec.y;
729	d3dLight.dvDirection.z = vec.z;
730	}
731	// Attenuation parameters
732	d3dLight.dvRange = lt->getAttenuationRange();
733	d3dLight.dvAttenuation0 = lt->getAttenuationConstant();
734	d3dLight.dvAttenuation1 = lt->getAttenuationLinear();
735	d3dLight.dvAttenuation2 = lt->getAttenuationQuadric();
736
737
738
739	// Set light state
740	hr = mlpD3DDevice->SetLight(index, &d3dLight);
741
742	if (FAILED(hr))
743	OGRE_EXCEPT(hr, "Unable to set light details", "D3DRenderSystem::setD3DLight");
744
745	hr = mlpD3DDevice->LightEnable(index, TRUE);
746	if (FAILED(hr))
747	OGRE_EXCEPT(hr, "Unable to enable light.", "D3DRenderSystem::setD3DLight");
748	}
749
750
751	}
752	//-----------------------------------------------------------------------
753	D3DMATRIX D3DRenderSystem::makeD3DMatrix(const Matrix4& mat)
754	{
755	// Transpose matrix
756	// D3D uses row vectors i.e. V*M
757	// Ogre, OpenGL and everything else uses coloumn vectors i.e. M*V
758	D3DMATRIX d3dMat;
759
760	d3dMat.m[0][0] = mat[0][0];
761	d3dMat.m[0][1] = mat[1][0];
762	d3dMat.m[0][2] = mat[2][0];
763	d3dMat.m[0][3] = mat[3][0];
764
765	d3dMat.m[1][0] = mat[0][1];
766	d3dMat.m[1][1] = mat[1][1];
767	d3dMat.m[1][2] = mat[2][1];
768	d3dMat.m[1][3] = mat[3][1];
769
770	d3dMat.m[2][0] = mat[0][2];
771	d3dMat.m[2][1] = mat[1][2];
772	d3dMat.m[2][2] = mat[2][2];
773	d3dMat.m[2][3] = mat[3][2];
774
775	d3dMat.m[3][0] = mat[0][3];
776	d3dMat.m[3][1] = mat[1][3];
777	d3dMat.m[3][2] = mat[2][3];
778	d3dMat.m[3][3] = mat[3][3];
779
780	return d3dMat;
781	}
782
783	Matrix4 D3DRenderSystem::convertD3DMatrix(const D3DMATRIX& d3dmat)
784	{
785	// The reverse of makeD3DMatrix
786	// Transpose matrix
787	// D3D uses row vectors i.e. V*M
788	// Ogre, OpenGL and everything else uses coloumn vectors i.e. M*V
789	Matrix4 mat;
790	for (unsigned row = 0; row < 4; ++row)
791	for (unsigned col = 0; col < 4; ++col)
792	mat[col][row] = d3dmat.m[row][col];
793
794	return mat;
795
796
797	}
798	//-----------------------------------------------------------------------
799	void D3DRenderSystem::_setWorldMatrix(const Matrix4 &m)
800	{
801	D3DMATRIX d3dmat;
802
803	d3dmat = makeD3DMatrix(m);
804
805	HRESULT hr = mlpD3DDevice->SetTransform(D3DTRANSFORMSTATE_WORLD, &d3dmat);
806
807	if (FAILED(hr))
808	OGRE_EXCEPT(hr, "Cannot set D3D world matrix",
809	"D3DRenderSystem::_setWorldMatrix");
810	}
811
812	//-----------------------------------------------------------------------
813	void D3DRenderSystem::_setViewMatrix(const Matrix4 &m)
814	{
815	// save latest view matrix
816	mViewMatrix = m;
817	mViewMatrix[2][0] = -mViewMatrix[2][0];
818	mViewMatrix[2][1] = -mViewMatrix[2][1];
819	mViewMatrix[2][2] = -mViewMatrix[2][2];
820	mViewMatrix[2][3] = -mViewMatrix[2][3];
821
822	D3DMATRIX d3dmat = makeD3DMatrix(mViewMatrix);
823
824	HRESULT hr = mlpD3DDevice->SetTransform(D3DTRANSFORMSTATE_VIEW, &d3dmat);
825
826	if (FAILED(hr))
827	OGRE_EXCEPT(hr, "Cannot set D3D view matrix",
828	"D3DRenderSystem::_setViewMatrix");
829
830	}
831	//-----------------------------------------------------------------------
832	void D3DRenderSystem::_setProjectionMatrix(const Matrix4 &m)
833	{
834	D3DMATRIX d3dmat = makeD3DMatrix(m);
835
836	if( mActiveRenderTarget->requiresTextureFlipping() )
837	{
838	d3dmat._22 = - d3dmat._22;
839	}
840
841	HRESULT hr = mlpD3DDevice->SetTransform(D3DTRANSFORMSTATE_PROJECTION, &d3dmat);
842
843	if (FAILED(hr))
844	OGRE_EXCEPT(hr, "Cannot set D3D projection matrix",
845	"D3DRenderSystem::_setProjectionMatrix");
846	}
847
848
849	//-----------------------------------------------------------------------
850	void D3DRenderSystem::_setSurfaceParams(const ColourValue &ambient,
851	const ColourValue &diffuse, const ColourValue &specular,
852	const ColourValue &emissive, const Real shininess,
853	TrackVertexColourType tracking)
854	{
855	// Remember last call
856	static ColourValue lastAmbient = ColourValue::Black;
857	static ColourValue lastDiffuse = ColourValue::Black;
858	static ColourValue lastSpecular = ColourValue::Black;
859	static ColourValue lastEmissive = ColourValue::Black;
860	static Real lastShininess = 0.0;
861	static TrackVertexColourType lastTracking = -1;
862
863	// Only update if changed
864	if (ambient != lastAmbient \|\| diffuse != lastDiffuse \|\|
865	specular != lastSpecular \|\| emissive != lastEmissive \|\|
866	shininess != lastShininess)
867	{
868	// Convert to D3D
869	D3DMATERIAL7 d3dMat;
870
871	d3dMat.dcvDiffuse.r = diffuse.r;
872	d3dMat.dcvDiffuse.g = diffuse.g;
873	d3dMat.dcvDiffuse.b = diffuse.b;
874	d3dMat.dcvDiffuse.a = diffuse.a;
875
876	d3dMat.dcvAmbient.r = ambient.r;
877	d3dMat.dcvAmbient.g = ambient.g;
878	d3dMat.dcvAmbient.b = ambient.b;
879	d3dMat.dcvAmbient.a = ambient.a;
880
881	d3dMat.dcvSpecular.r = specular.r;
882	d3dMat.dcvSpecular.g = specular.g;
883	d3dMat.dcvSpecular.b = specular.b;
884	d3dMat.dcvSpecular.a = specular.a;
885
886	d3dMat.dcvEmissive.r = emissive.r;
887	d3dMat.dcvEmissive.g = emissive.g;
888	d3dMat.dcvEmissive.b = emissive.b;
889	d3dMat.dcvEmissive.a = emissive.a;
890
891	d3dMat.dvPower = shininess;
892
893	HRESULT hr = mlpD3DDevice->SetMaterial(&d3dMat);
894	if (FAILED(hr))
895	OGRE_EXCEPT(hr, "Error setting D3D material.", "D3DRenderSystem::_setSurfaceParams");
896
897	// Remember the details
898	lastAmbient = ambient;
899	lastDiffuse = diffuse;
900	lastSpecular = specular;
901	lastEmissive = emissive;
902	lastShininess = shininess;
903	}
904	if(tracking != lastTracking)
905	{
906	if(tracking != TVC_NONE)
907	{
908	mlpD3DDevice->SetRenderState(D3DRENDERSTATE_COLORVERTEX, TRUE);
909	mlpD3DDevice->SetRenderState(D3DRENDERSTATE_AMBIENTMATERIALSOURCE, (tracking&TVC_AMBIENT)?D3DMCS_COLOR1:D3DMCS_MATERIAL);
910	mlpD3DDevice->SetRenderState(D3DRENDERSTATE_DIFFUSEMATERIALSOURCE, (tracking&TVC_DIFFUSE)?D3DMCS_COLOR1:D3DMCS_MATERIAL);
911	mlpD3DDevice->SetRenderState(D3DRENDERSTATE_SPECULARMATERIALSOURCE, (tracking&TVC_SPECULAR)?D3DMCS_COLOR1:D3DMCS_MATERIAL);
912	mlpD3DDevice->SetRenderState(D3DRENDERSTATE_EMISSIVEMATERIALSOURCE, (tracking&TVC_EMISSIVE)?D3DMCS_COLOR1:D3DMCS_MATERIAL);
913	}
914	else
915	{
916	mlpD3DDevice->SetRenderState(D3DRENDERSTATE_COLORVERTEX, FALSE);
917	}
918	lastTracking = tracking;
919	}
920	}
921	//-----------------------------------------------------------------------
922	void D3DRenderSystem::_setTexture(size_t stage, bool enabled, const String &texname)
923	{
924	HRESULT hr;
925	D3DTexturePtr dt = TextureManager::getSingleton().getByName(texname);
926	if (enabled && !dt.isNull())
927	{
928	// note used
929	dt->touch();
930
931	LPDIRECTDRAWSURFACE7 pTex = dt->getDDSurface();
932	if (pTex != mTexStageDesc[stage].pTex)
933	{
934	hr = mlpD3DDevice->SetTexture(stage, pTex );
935	if (FAILED(hr))
936	OGRE_EXCEPT(hr, "Unable to set texture in D3D.", "D3DRenderSystem::_setTexture");
937
938	// set stage desc.
939	mTexStageDesc[stage].texType = _ogreTexTypeToD3DTexType(dt->getTextureType());
940	mTexStageDesc[stage].pTex = pTex;
941	}
942	}
943	else
944	{
945	hr = mlpD3DDevice->SetTexture(stage, 0);
946	if (FAILED(hr))
947	OGRE_EXCEPT(hr, "Unable to disable texture in D3D.", "D3DRenderSystem::_setTexture");
948	hr = __SetTextureStageState( stage, D3DTSS_COLOROP, D3DTOP_DISABLE );
949	if (FAILED(hr))
950	OGRE_EXCEPT(hr, "Unable to disable texture in D3D.", "D3DRenderSystem::_setTexture");
951
952	// set stage desc. to defaults
953	mTexStageDesc[stage].autoTexCoordType = TEXCALC_NONE;
954	mTexStageDesc[stage].coordIndex = 0;
955	mTexStageDesc[stage].texType = D3D_TEX_TYPE_NORMAL;
956	mTexStageDesc[stage].pTex = NULL;
957	}
958	}
959	//---------------------------------------------------------------------
960	DWORD getD3DTexCalc(TexCoordCalcMethod tcc)
961	{
962	switch (tcc)
963	{
964	case TEXCALC_NONE:
965	return 0;
966	case TEXCALC_ENVIRONMENT_MAP:
967	// D3D7 does not support spherical reflection
968	return D3DTSS_TCI_CAMERASPACENORMAL;
969	case TEXCALC_ENVIRONMENT_MAP_REFLECTION:
970	return D3DTSS_TCI_CAMERASPACEREFLECTIONVECTOR;
971	case TEXCALC_ENVIRONMENT_MAP_PLANAR:
972	case TEXCALC_PROJECTIVE_TEXTURE:
973	return D3DTSS_TCI_CAMERASPACEPOSITION;
974	case TEXCALC_ENVIRONMENT_MAP_NORMAL:
975	return D3DTSS_TCI_CAMERASPACENORMAL;
976	}
977	}
978	//-----------------------------------------------------------------------
979	void D3DRenderSystem::_setTextureCoordCalculation(size_t stage, TexCoordCalcMethod m,
980	const Frustum* frustum)
981	{
982	HRESULT hr = S_OK;
983	// record the stage state
984	mTexStageDesc[stage].autoTexCoordType = m;
985	mTexStageDesc[stage].frustum = frustum;
986
987	hr = __SetTextureStageState(stage, D3DTSS_TEXCOORDINDEX,
988	getD3DTexCalc(m) \| mTexStageDesc[stage].coordIndex);
989	if( FAILED( hr ) )
990	OGRE_EXCEPT( hr, "Error setting texture coord calculation", "D3DRenderSystem::_setTextureCoordCalculation" );
991
992	}
993	//-----------------------------------------------------------------------
994	void D3DRenderSystem::_setTextureMatrix(size_t stage, const Matrix4& xForm)
995	{
996	HRESULT hr;
997	D3DMATRIX d3dMat; // the matrix we'll maybe apply
998	Matrix4 newMat = xForm; // the matrix we'll apply after conv. to D3D format
999
1000
1001	/* If envmap is applied, since D3D7 doesn't support spheremap,
1002	then we have to use texture transform to make the camera space normal
1003	reference the envmap properly. This isn't exactly the same as spheremap
1004	(it looks nasty on flat areas because the camera space normals are the same)
1005	but it's the best approximation we have in the absence of a proper spheremap */
1006	if (mTexStageDesc[stage].autoTexCoordType == TEXCALC_ENVIRONMENT_MAP)
1007	{
1008	// concatenate with the xForm
1009	newMat = newMat.concatenate(Matrix4::CLIPSPACE2DTOIMAGESPACE);
1010	}
1011
1012	// If this is a cubic reflection, we need to modify using the view matrix
1013	if (mTexStageDesc[stage].autoTexCoordType == TEXCALC_ENVIRONMENT_MAP_REFLECTION)
1014	{
1015	D3DMATRIX viewMatrix;
1016
1017	// Get view matrix
1018	mlpD3DDevice->GetTransform(D3DTRANSFORMSTATE_VIEW, &viewMatrix);
1019	// Get transposed 3x3, ie since D3D is transposed just copy
1020	// We want to transpose since that will invert an orthonormal matrix ie rotation
1021	Matrix4 ogreViewTransposed;
1022	ogreViewTransposed[0][0] = viewMatrix.m[0][0];
1023	ogreViewTransposed[0][1] = viewMatrix.m[0][1];
1024	ogreViewTransposed[0][2] = viewMatrix.m[0][2];
1025	ogreViewTransposed[0][3] = 0.0f;
1026
1027	ogreViewTransposed[1][0] = viewMatrix.m[1][0];
1028	ogreViewTransposed[1][1] = viewMatrix.m[1][1];
1029	ogreViewTransposed[1][2] = viewMatrix.m[1][2];
1030	ogreViewTransposed[1][3] = 0.0f;
1031
1032	ogreViewTransposed[2][0] = viewMatrix.m[2][0];
1033	ogreViewTransposed[2][1] = viewMatrix.m[2][1];
1034	ogreViewTransposed[2][2] = viewMatrix.m[2][2];
1035	ogreViewTransposed[2][3] = 0.0f;
1036
1037	ogreViewTransposed[3][0] = 0.0f;
1038	ogreViewTransposed[3][1] = 0.0f;
1039	ogreViewTransposed[3][2] = 0.0f;
1040	ogreViewTransposed[3][3] = 1.0f;
1041
1042	newMat = newMat.concatenate(ogreViewTransposed);
1043	}
1044
1045	if (mTexStageDesc[stage].autoTexCoordType == TEXCALC_PROJECTIVE_TEXTURE)
1046	{
1047	// Derive camera space to projector space transform
1048	// To do this, we need to undo the camera view matrix, then
1049	// apply the projector view & projection matrices
1050	newMat = mViewMatrix.inverse();
1051	newMat = mTexStageDesc[stage].frustum->getViewMatrix() * newMat;
1052	newMat = mTexStageDesc[stage].frustum->getProjectionMatrix() * newMat;
1053	if (mTexStageDesc[stage].frustum->getProjectionType() == PT_PERSPECTIVE)
1054	{
1055	newMat = PROJECTIONCLIPSPACE2DTOIMAGESPACE_PERSPECTIVE * newMat;
1056	}
1057	else
1058	{
1059	newMat = PROJECTIONCLIPSPACE2DTOIMAGESPACE_ORTHO * newMat;
1060	}
1061	newMat = xForm * newMat;
1062
1063	}
1064
1065	// convert our matrix to D3D format
1066	d3dMat = makeD3DMatrix(newMat);
1067
1068	// need this if texture is a cube map, to invert D3D's z coord
1069	if (mTexStageDesc[stage].autoTexCoordType != TEXCALC_NONE &&
1070	mTexStageDesc[stage].autoTexCoordType != TEXCALC_PROJECTIVE_TEXTURE)
1071	{
1072	d3dMat._13 = -d3dMat._13;
1073	d3dMat._23 = -d3dMat._23;
1074	d3dMat._33 = -d3dMat._33;
1075	d3dMat._43 = -d3dMat._43;
1076	}
1077
1078	// set the matrix if it's not the identity
1079	if (!(newMat == Matrix4::IDENTITY))
1080	{
1081	// tell D3D the dimension of tex. coord.
1082	int texCoordDim;
1083	if (mTexStageDesc[stage].autoTexCoordType == TEXCALC_PROJECTIVE_TEXTURE)
1084	{
1085	texCoordDim = D3DTTFF_PROJECTED \| D3DTTFF_COUNT3;
1086	}
1087	else
1088	{
1089	switch (mTexStageDesc[stage].texType)
1090	{
1091	case D3D_TEX_TYPE_NORMAL:
1092	texCoordDim = D3DTTFF_COUNT2;
1093	break;
1094	case D3D_TEX_TYPE_CUBE:
1095	case D3D_TEX_TYPE_VOLUME:
1096	texCoordDim = D3DTTFF_COUNT3;
1097	}
1098	}
1099
1100	hr = __SetTextureStageState( stage, D3DTSS_TEXTURETRANSFORMFLAGS, texCoordDim );
1101	if (FAILED(hr))
1102	OGRE_EXCEPT( hr, "Unable to set texture coord. dimension", "D3D9RenderSystem::_setTextureMatrix" );
1103
1104	hr = mlpD3DDevice->SetTransform(
1105	(D3DTRANSFORMSTATETYPE)(D3DTRANSFORMSTATE_TEXTURE0 + stage), &d3dMat );
1106	if (FAILED(hr))
1107	OGRE_EXCEPT( hr, "Unable to set texture matrix", "D3D9RenderSystem::_setTextureMatrix" );
1108	}
1109	else
1110	{
1111	// disable all of this
1112	hr = __SetTextureStageState( stage, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE );
1113	if( FAILED( hr ) )
1114	OGRE_EXCEPT( hr, "Error setting texture matrix", "D3D9RenderSystem::_setTextureMatrix" );
1115
1116	// set the identity matrix
1117	D3DUtil_SetIdentityMatrix( d3dMat );
1118	hr = mlpD3DDevice->SetTransform(
1119	(D3DTRANSFORMSTATETYPE)(D3DTRANSFORMSTATE_TEXTURE0 + stage), &d3dMat );
1120	if( FAILED( hr ) )
1121	OGRE_EXCEPT( hr, "Error setting texture matrix", "D3D9RenderSystem::_setTextureMatrix" );
1122	}
1123	}
1124	//---------------------------------------------------------------------
1125	void D3DRenderSystem::_setTextureCoordSet( size_t stage, size_t index )
1126	{
1127	HRESULT hr;
1128	hr = __SetTextureStageState( stage, D3DTSS_TEXCOORDINDEX,
1129	getD3DTexCalc(mTexStageDesc[stage].autoTexCoordType) \| index );
1130	if( FAILED( hr ) )
1131	OGRE_EXCEPT( hr, "Unable to set texture coord. set index", "D3DRenderSystem::_setTextureCoordSet" );
1132	// Record settings
1133	mTexStageDesc[stage].coordIndex = index;
1134	}
1135	//-----------------------------------------------------------------------
1136	void D3DRenderSystem::_setTextureBlendMode(size_t stage, const LayerBlendModeEx& bm)
1137	{
1138	HRESULT hr;
1139	D3DTEXTURESTAGESTATETYPE tss;
1140	DWORD value;
1141
1142	if (bm.blendType == LBT_COLOUR)
1143	{
1144	tss = D3DTSS_COLOROP;
1145	}
1146	else if (bm.blendType == LBT_ALPHA)
1147	{
1148	tss= D3DTSS_ALPHAOP;
1149	}
1150
1151	switch (bm.operation)
1152	{
1153	case LBX_SOURCE1:
1154	value = D3DTOP_SELECTARG1;
1155	break;
1156	case LBX_SOURCE2:
1157	value = D3DTOP_SELECTARG2;
1158	break;
1159	case LBX_MODULATE:
1160	value = D3DTOP_MODULATE;
1161	break;
1162	case LBX_MODULATE_X2:
1163	value = D3DTOP_MODULATE2X;
1164	break;
1165	case LBX_MODULATE_X4:
1166	value = D3DTOP_MODULATE4X;
1167	break;
1168	case LBX_ADD:
1169	value = D3DTOP_ADD;
1170	break;
1171	case LBX_ADD_SIGNED:
1172	value = D3DTOP_ADDSIGNED;
1173	break;
1174	case LBX_ADD_SMOOTH:
1175	value = D3DTOP_ADDSMOOTH;
1176	break;
1177	case LBX_SUBTRACT:
1178	value = D3DTOP_SUBTRACT;
1179	break;
1180	case LBX_BLEND_DIFFUSE_ALPHA:
1181	value = D3DTOP_BLENDDIFFUSEALPHA;
1182	break;
1183	case LBX_BLEND_TEXTURE_ALPHA:
1184	value = D3DTOP_BLENDTEXTUREALPHA;
1185	break;
1186	case LBX_BLEND_CURRENT_ALPHA:
1187	value = D3DTOP_BLENDCURRENTALPHA;
1188	break;
1189	case LBX_BLEND_MANUAL:
1190	value = D3DTOP_BLENDFACTORALPHA;
1191	// Set factor in render state
1192	hr = __SetRenderState(D3DRENDERSTATE_TEXTUREFACTOR,
1193	D3DRGBA(0,0,0,bm.factor));
1194	break;
1195	case LBX_DOTPRODUCT:
1196	if (mD3DDeviceDesc.dwTextureOpCaps & D3DTEXOPCAPS_DOTPRODUCT3)
1197	value = D3DTOP_DOTPRODUCT3;
1198	else
1199	value = D3DTOP_MODULATE;
1200	break;
1201	}
1202
1203	// Make call to set operation
1204	hr = __SetTextureStageState(stage, tss, value);
1205
1206	// Now set up sources
1207	D3DCOLOR manualD3D;
1208	if (bm.blendType == LBT_COLOUR)
1209	{
1210	tss = D3DTSS_COLORARG1;
1211	manualD3D = D3DRGBA(bm.colourArg1.r,bm.colourArg1.g,bm.colourArg1.b,1.0);
1212	mManualBlendColours[stage][0] = bm.colourArg1;
1213	}
1214	else if (bm.blendType == LBT_ALPHA)
1215	{
1216	tss = D3DTSS_ALPHAARG1;
1217	manualD3D = D3DRGBA(mManualBlendColours[stage][0].r,
1218	mManualBlendColours[stage][0].g,
1219	mManualBlendColours[stage][0].b,
1220	bm.alphaArg1);
1221	}
1222	LayerBlendSource bs = bm.source1;
1223	for (int i = 0; i < 2; ++i)
1224	{
1225	switch (bs)
1226	{
1227	case LBS_CURRENT:
1228	value = D3DTA_CURRENT;
1229	break;
1230	case LBS_TEXTURE:
1231	value = D3DTA_TEXTURE;
1232	break;
1233	case LBS_DIFFUSE:
1234	value = D3DTA_DIFFUSE;
1235	break;
1236	case LBS_SPECULAR:
1237	value = D3DTA_SPECULAR;
1238	break;
1239	case LBS_MANUAL:
1240	value = D3DTA_TFACTOR;
1241	// Set factor in render state
1242	hr = __SetRenderState(D3DRENDERSTATE_TEXTUREFACTOR, manualD3D);
1243	break;
1244	}
1245
1246	// Set source
1247	hr = __SetTextureStageState(stage, tss, value);
1248
1249	// Source2
1250	bs = bm.source2;
1251	if (bm.blendType == LBT_COLOUR)
1252	{
1253	tss = D3DTSS_COLORARG2;
1254	manualD3D = D3DRGBA(bm.colourArg2.r,bm.colourArg2.g,bm.colourArg2.b,1.0);
1255	mManualBlendColours[stage][1] = bm.colourArg2;
1256	}
1257	else if (bm.blendType == LBT_ALPHA)
1258	{
1259	tss = D3DTSS_ALPHAARG2;
1260	manualD3D = D3DRGBA(mManualBlendColours[stage][1].r,
1261	mManualBlendColours[stage][1].g,
1262	mManualBlendColours[stage][1].b
1263	,bm.alphaArg2);
1264	}
1265	}
1266	}
1267	//-----------------------------------------------------------------------
1268	void D3DRenderSystem::_setTextureAddressingMode(size_t stage, TextureUnitState::TextureAddressingMode tam)
1269	{
1270	HRESULT hr;
1271	D3DTEXTUREADDRESS d3dType;
1272
1273	switch(tam)
1274	{
1275	case TextureUnitState::TAM_WRAP:
1276	d3dType = D3DTADDRESS_WRAP;
1277	break;
1278	case TextureUnitState::TAM_MIRROR:
1279	d3dType = D3DTADDRESS_MIRROR;
1280	break;
1281	case TextureUnitState::TAM_CLAMP:
1282	d3dType = D3DTADDRESS_CLAMP;
1283	break;
1284	}
1285
1286
1287	hr = __SetTextureStageState(stage, D3DTSS_ADDRESS, d3dType);
1288	}
1289	//-----------------------------------------------------------------------
1290	void D3DRenderSystem::_setSceneBlending(SceneBlendFactor sourceFactor, SceneBlendFactor destFactor)
1291	{
1292	HRESULT hr;
1293	D3DBLEND d3dSrcBlend, d3dDestBlend;
1294
1295	D3DBLEND* pBlend = &d3dSrcBlend;
1296	SceneBlendFactor ogreBlend = sourceFactor;
1297
1298	for (int i = 0 ; i < 2; ++i)
1299	{
1300	switch(ogreBlend)
1301	{
1302	case SBF_ONE:
1303	*pBlend = D3DBLEND_ONE;
1304	break;
1305	case SBF_ZERO:
1306	*pBlend = D3DBLEND_ZERO;
1307	break;
1308	case SBF_DEST_COLOUR:
1309	*pBlend = D3DBLEND_DESTCOLOR;
1310	break;
1311	case SBF_SOURCE_COLOUR:
1312	*pBlend = D3DBLEND_SRCCOLOR;
1313	break;
1314	case SBF_ONE_MINUS_DEST_COLOUR:
1315	*pBlend = D3DBLEND_INVDESTCOLOR;
1316	break;
1317	case SBF_ONE_MINUS_SOURCE_COLOUR:
1318	*pBlend = D3DBLEND_INVSRCCOLOR;
1319	break;
1320	case SBF_DEST_ALPHA:
1321	*pBlend = D3DBLEND_DESTALPHA;
1322	break;
1323	case SBF_SOURCE_ALPHA:
1324	*pBlend = D3DBLEND_SRCALPHA;
1325	break;
1326	case SBF_ONE_MINUS_DEST_ALPHA:
1327	*pBlend = D3DBLEND_INVDESTALPHA;
1328	break;
1329	case SBF_ONE_MINUS_SOURCE_ALPHA:
1330	*pBlend = D3DBLEND_INVSRCALPHA;
1331	break;
1332	}
1333	ogreBlend = destFactor;
1334	pBlend = &d3dDestBlend;
1335
1336	}
1337
1338	hr = __SetRenderState(D3DRENDERSTATE_SRCBLEND, d3dSrcBlend);
1339
1340	hr = __SetRenderState(D3DRENDERSTATE_DESTBLEND, d3dDestBlend);
1341
1342	// Save last scene blend, because colour write off is simulated
1343	// through scene blend
1344	mSavedDestFactor = destFactor;
1345	mSavedSrcFactor = sourceFactor;
1346
1347
1348	}
1349	//-----------------------------------------------------------------------
1350	void D3DRenderSystem::_setAlphaRejectSettings(CompareFunction func, unsigned char value)
1351	{
1352	HRESULT hr;
1353	if (func != CMPF_ALWAYS_PASS)
1354	{
1355	if( FAILED( hr = __SetRenderState( D3DRENDERSTATE_ALPHATESTENABLE, TRUE ) ) )
1356	OGRE_EXCEPT( hr, "Failed to enable alpha testing",
1357	"D3DRenderSystem::_setAlphaRejectSettings" );
1358	}
1359	else
1360	{
1361	if( FAILED( hr = __SetRenderState( D3DRENDERSTATE_ALPHATESTENABLE, FALSE ) ) )
1362	OGRE_EXCEPT( hr, "Failed to disable alpha testing",
1363	"D3DRenderSystem::_setAlphaRejectSettings" );
1364	}
1365
1366	// Set always just be sure
1367	hr = __SetRenderState(D3DRENDERSTATE_ALPHAFUNC,
1368	convertCompareFunction(func));
1369
1370	hr = __SetRenderState(D3DRENDERSTATE_ALPHAREF, value);
1371	}
1372	//-----------------------------------------------------------------------
1373	void D3DRenderSystem::_setViewport(Viewport *vp)
1374	{
1375	if (mDeviceLost)
1376	return;
1377
1378	// Check if viewport is different
1379	if (vp != mActiveViewport \|\| vp->_isUpdated())
1380	{
1381	mActiveViewport = vp;
1382	mActiveRenderTarget = vp->getTarget();
1383	// Ok, it's different. Time to set render target (maybe)
1384	// and viewport params.
1385	D3DVIEWPORT7 d3dvp;
1386	HRESULT hr;
1387
1388	// Set render target
1389	// TODO - maybe only set when required?
1390	RenderTarget* target;
1391	target = vp->getTarget();
1392	// Get DD Back buffer
1393	LPDIRECTDRAWSURFACE7 pBack;
1394	target->getCustomAttribute("DDBACKBUFFER", &pBack);
1395	if (pBack->IsLost())
1396	{
1397	_notifyDeviceLost();
1398	return;
1399	}
1400
1401	hr = mlpD3DDevice->SetRenderTarget( pBack, 0 );
1402
1403	_setCullingMode( mCullingMode );
1404
1405	// Set viewport dimensions
1406	d3dvp.dwX = vp->getActualLeft();
1407	d3dvp.dwY = vp->getActualTop();
1408	d3dvp.dwWidth = vp->getActualWidth();
1409	d3dvp.dwHeight = vp->getActualHeight();
1410
1411	// Z-values from 0.0 to 1.0 (TODO - standardise with OpenGL?)
1412	d3dvp.dvMinZ = 0.0f;
1413	d3dvp.dvMaxZ = 1.0f;
1414
1415	hr = mlpD3DDevice->SetViewport(&d3dvp);
1416
1417	if (FAILED(hr))
1418	OGRE_EXCEPT(hr, "Error setting D3D viewport.",
1419	"D3DRenderSystem::_setViewport");
1420
1421	vp->_clearUpdatedFlag();
1422
1423	}
1424	}
1425
1426	//-----------------------------------------------------------------------
1427	void D3DRenderSystem::_beginFrame(void)
1428	{
1429	OgreGuard( "D3DRenderSystem::_beginFrame" );
1430
1431	HRESULT hr;
1432
1433	// Device lost from somewhere outside?
1434	if (mDeviceLost)
1435	{
1436	_restoreLostDevice();
1437	if (mDeviceLost)
1438	return; // try later
1439	}
1440
1441	if (!mActiveViewport)
1442	OGRE_EXCEPT(999, "Cannot begin frame - no viewport selected.",
1443	"D3DRenderSystem::_beginFrame");
1444
1445	// Clear the viewport if required
1446	if (mActiveViewport->getClearEveryFrame())
1447	{
1448	clearFrameBuffer(FBT_COLOUR \| FBT_DEPTH,
1449	mActiveViewport->getBackgroundColour());
1450	}
1451
1452	hr = mlpD3DDevice->BeginScene();
1453	if (FAILED(hr))
1454	{
1455	if (hr == DDERR_SURFACELOST \|\| hr == DDERR_SURFACEBUSY)
1456	{
1457	_notifyDeviceLost();
1458	_restoreLostDevice();
1459	if (mDeviceLost)
1460	return; // try later
1461
1462	if (FAILED(hr = mlpD3DDevice->BeginScene()))
1463	OGRE_EXCEPT(hr, "Error beginning frame after device restore: "
1464	+ getErrorDescription(hr),
1465	"D3DRenderSystem::_beginFrame");
1466	}
1467	else
1468	{
1469	OGRE_EXCEPT(hr, "Error beginning frame: " + getErrorDescription(hr),
1470	"D3DRenderSystem::_beginFrame");
1471	}
1472	}
1473
1474	// Moved here from _render, no point checking every rendering call
1475	static bool firstTime = true;
1476	if (firstTime)
1477	{
1478	// First-time setup
1479	// Set up some defaults
1480
1481	// Allow alpha blending
1482	hr = __SetRenderState(D3DRENDERSTATE_ALPHABLENDENABLE, TRUE);
1483	if (FAILED(hr))
1484	OGRE_EXCEPT(hr, "Error enabling alpha blending option.",
1485	"D3DRenderSystem::_beginFrame");
1486
1487	// Allow specular effects
1488	hr = __SetRenderState(D3DRENDERSTATE_SPECULARENABLE, TRUE);
1489	if (FAILED(hr))
1490	OGRE_EXCEPT(hr, "Error enabling specular option.",
1491	"D3DRenderSystem::_beginFrame");
1492
1493	firstTime = false;
1494	}
1495
1496	OgreUnguard();
1497	}
1498
1499	//-----------------------------------------------------------------------
1500	void D3DRenderSystem::_render(const RenderOperation& op)
1501	{
1502	OgreGuard( "D3DRenderSystem::_render" );
1503	HRESULT hr;
1504
1505	if (mDeviceLost)
1506	return;
1507
1508	// Exit immediately if there is nothing to render
1509	// Passing 0 arguments causes problems for Direct3D
1510	if (op.vertexData->vertexCount == 0 \|\|
1511	(op.useIndexes && op.indexData->indexCount == 0))
1512	return;
1513
1514	// call superclass
1515	RenderSystem::_render(op);
1516	// Set up vertex flags
1517	DWORD d3dVertexFormat = 0;
1518	unsigned int numTexCoords = 0;
1519
1520	// Assume no more than 10 buffers!
1521	static unsigned char* pBufPtrs[10];
1522
1523	// Lock all the buffers first
1524	// They're system memory buffers anyway
1525	const VertexBufferBinding::VertexBufferBindingMap binds =
1526	op.vertexData->vertexBufferBinding->getBindings();
1527	VertexBufferBinding::VertexBufferBindingMap::const_iterator bindi, bindend;
1528	bindend = binds.end();
1529	for (bindi = binds.begin(); bindi != bindend; ++bindi)
1530	{
1531	// lock from vertex start only
1532	pBufPtrs[bindi->first] = static_cast<unsigned char*>(
1533	bindi->second->lock(
1534	op.vertexData->vertexStart * bindi->second->getVertexSize(),
1535	op.vertexData->vertexCount * bindi->second->getVertexSize(),
1536	HardwareBuffer::HBL_READ_ONLY)
1537	);
1538
1539	}
1540
1541	// Determine vertex format
1542
1543	// Struct for data pointers
1544	D3DDRAWPRIMITIVESTRIDEDDATA strideData;
1545
1546	// Iterate over elements
1547	VertexDeclaration::VertexElementList::const_iterator elemi, elemend;
1548	const VertexDeclaration::VertexElementList elems =
1549	op.vertexData->vertexDeclaration->getElements();
1550	elemend = elems.end();
1551	for (elemi = elems.begin(); elemi != elemend; ++elemi)
1552	{
1553	// Get a few basic details
1554	const VertexElement& elem = *elemi;
1555	unsigned short source = elem.getSource();
1556	size_t vertexSize = op.vertexData->vertexDeclaration->getVertexSize(source);
1557	size_t offset = elem.getOffset();
1558	// semantic-specific stuff
1559	switch (elem.getSemantic())
1560	{
1561	case VES_POSITION:
1562	d3dVertexFormat \|= D3DFVF_XYZ; // Untransformed
1563	strideData.position.lpvData = pBufPtrs[source] + offset;
1564	strideData.position.dwStride = static_cast<DWORD>(vertexSize);
1565	// Set up pointer
1566	break;
1567	case VES_NORMAL:
1568	d3dVertexFormat \|= D3DFVF_NORMAL;
1569	strideData.normal.lpvData = pBufPtrs[source] + offset;
1570	strideData.normal.dwStride = static_cast<DWORD>(vertexSize);
1571	break;
1572	case VES_DIFFUSE:
1573	d3dVertexFormat \|= D3DFVF_DIFFUSE;
1574	strideData.diffuse.lpvData = pBufPtrs[source] + offset;
1575	strideData.diffuse.dwStride = static_cast<DWORD>(vertexSize);
1576	break;
1577	case VES_SPECULAR:
1578	d3dVertexFormat \|= D3DFVF_SPECULAR;
1579	strideData.specular.lpvData = pBufPtrs[source] + offset;
1580	strideData.specular.dwStride = static_cast<DWORD>(vertexSize);
1581	break;
1582	case VES_TEXTURE_COORDINATES:
1583	// texcoords must go in order
1584	if (elem.getIndex() != numTexCoords)
1585	{
1586	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Invalid vertex format, texture coordinates"
1587	" must be in order wih no gaps.", "D3DRenderSystem::_render");
1588	}
1589	// Don't add D3DFVF_TEXn flag here, wait until we know how many total
1590	// However, specify size
1591	switch (elem.getType())
1592	{
1593	case VET_FLOAT1:
1594	d3dVertexFormat \|= D3DFVF_TEXCOORDSIZE1(numTexCoords);
1595	break;
1596	case VET_FLOAT2:
1597	d3dVertexFormat \|= D3DFVF_TEXCOORDSIZE2(numTexCoords);
1598	break;
1599	case VET_FLOAT3:
1600	d3dVertexFormat \|= D3DFVF_TEXCOORDSIZE3(numTexCoords);
1601	break;
1602	case VET_FLOAT4:
1603	d3dVertexFormat \|= D3DFVF_TEXCOORDSIZE4(numTexCoords);
1604	break;
1605	}
1606
1607	strideData.textureCoords[numTexCoords].lpvData = pBufPtrs[source] + offset;
1608	strideData.textureCoords[numTexCoords].dwStride = static_cast<DWORD>(vertexSize);
1609
1610	// Increment number of coords
1611	++numTexCoords;
1612	}
1613
1614	}
1615	// Add combined texture flag
1616	switch(numTexCoords)
1617	{
1618	case 0:
1619	// do nothing
1620	break;
1621	case 1:
1622	d3dVertexFormat \|= D3DFVF_TEX1;
1623	break;
1624	case 2:
1625	d3dVertexFormat \|= D3DFVF_TEX2;
1626	break;
1627	case 3:
1628	d3dVertexFormat \|= D3DFVF_TEX3;
1629	break;
1630	case 4:
1631	d3dVertexFormat \|= D3DFVF_TEX4;
1632	break;
1633	case 5:
1634	d3dVertexFormat \|= D3DFVF_TEX5;
1635	break;
1636	case 6:
1637	d3dVertexFormat \|= D3DFVF_TEX6;
1638	break;
1639	case 7:
1640	d3dVertexFormat \|= D3DFVF_TEX7;
1641	break;
1642	case 8:
1643	d3dVertexFormat \|= D3DFVF_TEX8;
1644	break;
1645	}
1646
1647	// Determine rendering operation
1648	D3DPRIMITIVETYPE primType;
1649	switch (op.operationType)
1650	{
1651	case RenderOperation::OT_POINT_LIST:
1652	primType = D3DPT_POINTLIST;
1653	break;
1654	case RenderOperation::OT_LINE_LIST:
1655	primType = D3DPT_LINELIST;
1656	break;
1657	case RenderOperation::OT_LINE_STRIP:
1658	primType = D3DPT_LINESTRIP;
1659	break;
1660	case RenderOperation::OT_TRIANGLE_LIST:
1661	primType = D3DPT_TRIANGLELIST;
1662	break;
1663	case RenderOperation::OT_TRIANGLE_STRIP:
1664	primType = D3DPT_TRIANGLESTRIP;
1665	break;
1666	case RenderOperation::OT_TRIANGLE_FAN:
1667	primType = D3DPT_TRIANGLEFAN;
1668	break;
1669	}
1670
1671
1672	if (op.useIndexes)
1673	{
1674	// Get pointer to index buffer
1675	// D3D7 only allows 16-bit indexes, this is enforced in buffer manager
1676	unsigned short* pIdx = static_cast<unsigned short*>(
1677	op.indexData->indexBuffer->lock(
1678	op.indexData->indexStart,
1679	op.indexData->indexCount * sizeof(unsigned short),
1680	HardwareBuffer::HBL_READ_ONLY) );
1681
1682	hr = mlpD3DDevice->DrawIndexedPrimitiveStrided(primType,
1683	d3dVertexFormat,
1684	&strideData,
1685	static_cast<DWORD>(op.vertexData->vertexCount),
1686	pIdx,
1687	static_cast<DWORD>(op.indexData->indexCount)
1688	, 0);
1689	}
1690	else
1691	{
1692	hr = mlpD3DDevice->DrawPrimitiveStrided(primType,
1693	d3dVertexFormat,
1694	&strideData,
1695	static_cast<DWORD>(op.vertexData->vertexCount),
1696	0);
1697	}
1698
1699	// unlock buffers
1700	for (bindi = binds.begin(); bindi != bindend; ++bindi)
1701	{
1702	bindi->second->unlock();
1703	}
1704
1705	// Ignore errors - lost device issues can occur late in RTTs
1706
1707
1708
1709	OgreUnguard();
1710	}
1711
1712	//-----------------------------------------------------------------------
1713	void D3DRenderSystem::_endFrame(void)
1714	{
1715	OgreGuard( "D3DRenderSystem::_endFrame" );
1716
1717	if (mDeviceLost)
1718	{
1719	// Don't allow until next begin that restores
1720	return;
1721	}
1722
1723	HRESULT hr;
1724	hr = mlpD3DDevice->EndScene();
1725
1726	if (FAILED(hr))
1727	{
1728	if (hr == DDERR_SURFACELOST)
1729	{
1730	// Device lost
1731	_notifyDeviceLost();
1732	}
1733	else
1734	{
1735	// ignore other errors, may not find out about device lost
1736	// early enough in RTT situation
1737	}
1738	}
1739
1740	OgreUnguard();
1741	}
1742	//-----------------------------------------------------------------------
1743	void D3DRenderSystem::_notifyDeviceLost(void)
1744	{
1745	LogManager::getSingleton().logMessage("!!! Direct3D Device Lost!");
1746	mDeviceLost = true;
1747
1748	fireEvent("DeviceLost");
1749	}
1750	//-----------------------------------------------------------------------
1751	void D3DRenderSystem::_restoreLostDevice(void)
1752	{
1753	HRESULT hr = mActiveDDDriver->directDraw()->TestCooperativeLevel();
1754	if (SUCCEEDED(hr))
1755	{
1756	_restoreSurfaces();
1757	}
1758	else if (hr == DDERR_WRONGMODE)
1759	{
1760	// display mode change
1761	_recreateContext();
1762	}
1763	else if (hr == DDERR_EXCLUSIVEMODEALREADYSET)
1764	{
1765	// This means that some app took exclusive mode access
1766	// we need to sit in a loop till we get back to the right mode.
1767	do
1768	{
1769	Sleep(1000);
1770	}
1771	while (DDERR_EXCLUSIVEMODEALREADYSET == (hr = mActiveDDDriver->directDraw()->TestCooperativeLevel()));
1772	if (SUCCEEDED(hr))
1773	{
1774	// This means that the exclusive mode app relinquished its
1775	// control and we are back to the safe mode, so simply restore.
1776	_restoreSurfaces();
1777	}
1778	else if (hr == DDERR_WRONGMODE)
1779	{
1780	// This means that the exclusive mode app relinquished its
1781	// control BUT we are back to some strange mode, so destroy
1782	// and recreate.
1783	_recreateContext();
1784	}
1785	else
1786	{
1787	OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR,
1788	getErrorDescription(hr),
1789	"D3DRenderSystem::_restoreLostDevice");
1790	}
1791	}
1792	else if (hr == DDERR_NOEXCLUSIVEMODE)
1793	{
1794	// Not sure what to do here, it tends to fix itself after a few tries.
1795	return;
1796	}
1797	else
1798	{
1799	// Some other error has occurred which we haven't handled.
1800	OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR,
1801	getErrorDescription(hr),
1802	"D3DRenderSystem::_restoreLostDevice");
1803	}
1804
1805	LogManager::getSingleton().logMessage("!!! Direct3D Device successfully restored.");
1806	mDeviceLost = false;
1807	fireEvent("DeviceRestored");
1808	}
1809	//-----------------------------------------------------------------------------
1810	void D3DRenderSystem::_restoreSurfaces(void)
1811	{
1812	HRESULT hr = mActiveDDDriver->directDraw()->RestoreAllSurfaces();
1813	if (FAILED(hr))
1814	{
1815	OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR,
1816	getErrorDescription(hr),
1817	"D3DRenderSystem::_restoreLostDevice");
1818	}
1819
1820	// Need to reload all textures since surfaces are now blank
1821	static_cast<D3DTextureManager*>(mTextureManager)
1822	->reloadAfterLostDevice();
1823
1824	}
1825	//-----------------------------------------------------------------------------
1826	void D3DRenderSystem::_recreateContext(void)
1827	{
1828	// restore primary render window if fullscreen
1829	for (RenderTargetMap::iterator i = mRenderTargets.begin(); i != mRenderTargets.end(); ++i)
1830	{
1831	RenderTarget* rt = i->second;
1832	if (rt->isPrimary())
1833	{
1834	D3D7RenderWindow* d3dwin = static_cast<D3D7RenderWindow*>(rt);
1835	d3dwin->releaseDDSurfaces();
1836	d3dwin->createDDSurfaces();
1837	d3dwin->createDepthBuffer();
1838	break;
1839	}
1840	}
1841	}
1842	//-----------------------------------------------------------------------
1843	void D3DRenderSystem::_setCullingMode(CullingMode mode)
1844	{
1845	HRESULT hr;
1846	DWORD d3dMode;
1847
1848	mCullingMode = mode;
1849
1850	if (mode == CULL_NONE)
1851	{
1852	d3dMode = D3DCULL_NONE;
1853	}
1854	else if( mode == CULL_CLOCKWISE )
1855	{
1856	if( (mActiveRenderTarget->requiresTextureFlipping() && !mInvertVertexWinding) \|\|
1857	(!mActiveRenderTarget->requiresTextureFlipping() && mInvertVertexWinding))
1858	d3dMode = D3DCULL_CCW;
1859	else
1860	d3dMode = D3DCULL_CW;
1861	}
1862	else if (mode == CULL_ANTICLOCKWISE)
1863	{
1864	if( (mActiveRenderTarget->requiresTextureFlipping() && !mInvertVertexWinding) \|\|
1865	(!mActiveRenderTarget->requiresTextureFlipping() && mInvertVertexWinding))
1866	d3dMode = D3DCULL_CW;
1867	else
1868	d3dMode = D3DCULL_CCW;
1869	}
1870
1871	hr = __SetRenderState(D3DRENDERSTATE_CULLMODE, d3dMode);
1872	if (FAILED(hr))
1873	OGRE_EXCEPT(hr, "Unable to set D3D culling mode.",
1874	"D3DRenderSystem::_setCullingMode");
1875
1876	}
1877
1878	//-----------------------------------------------------------------------
1879	void D3DRenderSystem::_setDepthBufferParams(bool depthTest, bool depthWrite, CompareFunction depthFunction)
1880	{
1881	_setDepthBufferCheckEnabled(depthTest);
1882	_setDepthBufferWriteEnabled(depthWrite);
1883	_setDepthBufferFunction(depthFunction);
1884
1885	}
1886	//-----------------------------------------------------------------------
1887	void D3DRenderSystem::_setDepthBufferCheckEnabled(bool enabled)
1888	{
1889	HRESULT hr;
1890
1891	if (enabled)
1892	{
1893	// Use w-buffer if available and enabled
1894	if (mWBuffer && mD3DDeviceDesc.dpcTriCaps.dwRasterCaps & D3DPRASTERCAPS_WBUFFER)
1895	hr = __SetRenderState(D3DRENDERSTATE_ZENABLE, D3DZB_USEW);
1896	else
1897	hr = __SetRenderState(D3DRENDERSTATE_ZENABLE, D3DZB_TRUE);
1898	if (FAILED(hr))
1899	OGRE_EXCEPT(hr, "Error setting depth buffer test state.",
1900	"D3DRenderSystem::_setDepthBufferCheckEnabled");
1901	}
1902	else
1903	{
1904	hr = __SetRenderState(D3DRENDERSTATE_ZENABLE, D3DZB_FALSE);
1905	if (FAILED(hr))
1906	OGRE_EXCEPT(hr, "Error setting depth buffer test state.",
1907	"D3DRenderSystem::_setDepthBufferCheckEnabled");
1908	}
1909	}
1910	//-----------------------------------------------------------------------
1911	void D3DRenderSystem::_setDepthBufferWriteEnabled(bool enabled)
1912	{
1913	HRESULT hr;
1914
1915	hr = __SetRenderState(D3DRENDERSTATE_ZWRITEENABLE, enabled);
1916	if (FAILED(hr))
1917	OGRE_EXCEPT(hr, "Error setting depth buffer write state.",
1918	"D3DRenderSystem::_setDepthBufferWriteEnabled");
1919	}
1920	//-----------------------------------------------------------------------
1921	void D3DRenderSystem::_setDepthBufferFunction(CompareFunction func)
1922	{
1923	HRESULT hr = __SetRenderState(D3DRENDERSTATE_ZFUNC,
1924	convertCompareFunction(func));
1925	if (FAILED(hr))
1926	OGRE_EXCEPT(hr, "Error setting depth buffer test function.",
1927	"D3DRenderSystem::_setDepthBufferFunction");
1928	}
1929	//-----------------------------------------------------------------------
1930	void D3DRenderSystem::_setDepthBias(ushort bias)
1931	{
1932	HRESULT hr = __SetRenderState(D3DRENDERSTATE_ZBIAS,
1933	bias);
1934	if (FAILED(hr))
1935	OGRE_EXCEPT(hr, "Error setting depth bias.",
1936	"D3DRenderSystem::_setDepthBias");
1937	}
1938	//-----------------------------------------------------------------------
1939	String D3DRenderSystem::getErrorDescription(long errCode) const
1940	{
1941	char* errDesc;
1942	DWORD i;
1943
1944	errDesc = new char[255];
1945	// Try windows errors first
1946	i = FormatMessage(
1947	FORMAT_MESSAGE_FROM_HMODULE \|
1948	FORMAT_MESSAGE_FROM_SYSTEM \|
1949	FORMAT_MESSAGE_IGNORE_INSERTS,
1950	NULL,
1951	DDERR_SURFACELOST,
1952	MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
1953	(LPTSTR) errDesc,
1954	255,
1955	NULL
1956	);
1957
1958
1959	if (i == 0)
1960	{
1961	// Not found in windows message descriptions
1962	switch (errCode)
1963	{
1964	case DD_OK:
1965	strcpy(errDesc, "DD_OK: The request completed successfully.");
1966	break;
1967	case DDERR_ALREADYINITIALIZED:
1968	strcpy(errDesc, "DDERR_ALREADYINITIALIZED: The object has already been initialized.");
1969	break;
1970	case DDERR_BLTFASTCANTCLIP :
1971	strcpy(errDesc, "DDERR_BLTFASTCANTCLIP: A DirectDrawClipper object is attached to a source surface that has passed into a call to the IDirectDrawSurface7::BltFast method.");
1972	break;
1973	case DDERR_CANNOTATTACHSURFACE:
1974	strcpy(errDesc, "DDERR_CANNOTATTACHSURFACE: A surface cannot be attached to another requested surface.");
1975	break;
1976	case DDERR_CANNOTDETACHSURFACE:
1977	strcpy(errDesc, "DDERR_CANNOTATTACHSURFACE: A surface cannot be detached from another requested surface.");
1978	break;
1979	case DDERR_CANTCREATEDC:
1980	strcpy(errDesc, "DDERR_CANTCREATEDC: Windows can not create any more device contexts (DCs), or a DC was requested for a palette-indexed surface when the surface had no palette and the display mode was not palette-indexed.");
1981	break;
1982	case DDERR_CANTDUPLICATE:
1983	strcpy(errDesc, "DDERR_CANTDUPLICATE: Primary and 3-D surfaces, or surfaces that are implicitly created, cannot be duplicated.");
1984	break;
1985	case DDERR_CANTLOCKSURFACE:
1986	strcpy(errDesc, "DDERR_CANTLOCKSURFACE: Access to this surface is refused because an attempt was made to lock the primary surface without DCI support.");
1987	break;
1988	case DDERR_CANTPAGELOCK:
1989	strcpy(errDesc, "DDERR_CANTPAGELOCK: An attempt to page lock a surface failed. Page lock will not work on a display-memory surface or an emulated primary surface.");
1990	break;
1991	case DDERR_CANTPAGEUNLOCK:
1992	strcpy(errDesc, "DDERR_CANTPAGEUNLOCK: An attempt to page unlock a surface failed. Page unlock will not work on a display-memory surface or an emulated primary surface.");
1993	break;
1994	case DDERR_CLIPPERISUSINGHWND:
1995	strcpy(errDesc, "DDERR_CLIPPERISUSINGHWND: An attempt was made to set a clip list for a DirectDrawClipper object that is already monitoring a window handle.");
1996	break;
1997	case DDERR_COLORKEYNOTSET:
1998	strcpy(errDesc, "DDERR_COLORKEYNOTSET: No source color key is specified for this operation.");
1999	break;
2000	case DDERR_CURRENTLYNOTAVAIL:
2001	strcpy(errDesc, "DDERR_CURRENTLYNOTAVAIL: No support is currently available.");
2002	break;
2003	case DDERR_DCALREADYCREATED:
2004	strcpy(errDesc, "DDERR_DCALREADYCREATED: A device context (DC) has already been returned for this surface. Only one DC can be retrieved for each surface.");
2005	break;
2006	case DDERR_DEVICEDOESNTOWNSURFACE:
2007	strcpy(errDesc, "DDERR_DEVICEDOESNTOWNSURFACE: Surfaces created by one DirectDraw device cannot be used directly by another DirectDraw device.");
2008	break;
2009	case DDERR_DIRECTDRAWALREADYCREATED:
2010	strcpy(errDesc, "DDERR_DIRECTDRAWALREADYCREATED: A DirectDraw object representing this driver has already been created for this process.");
2011	break;
2012	case DDERR_EXCEPTION:
2013	strcpy(errDesc, "DDERR_EXCEPTION: An exception was encountered while performing the requested operation.");
2014	break;
2015	case DDERR_EXCLUSIVEMODEALREADYSET:
2016	strcpy(errDesc, "DDERR_EXCLUSIVEMODEALREADYSET: An attempt was made to set the cooperative level when it was already set to exclusive.");
2017	break;
2018	case DDERR_EXPIRED:
2019	strcpy(errDesc, "DDERR_EXPIRED: The data has expired and is therefore no longer valid.");
2020	break;
2021	case DDERR_GENERIC:
2022	strcpy(errDesc, "DDERR_GENERIC: There is an undefined error condition.");
2023	break;
2024	case DDERR_HEIGHTALIGN:
2025	strcpy(errDesc, "DDERR_HEIGHTALIGN: The height of the provided rectangle is not a multiple of the required alignment.");
2026	break;
2027	case DDERR_HWNDALREADYSET:
2028	strcpy(errDesc, "DDERR_HWNDALREADYSET: The DirectDraw cooperative level window handle has already been set. It cannot be reset while the process has surfaces or palettes created.");
2029	break;
2030	case DDERR_HWNDSUBCLASSED:
2031	strcpy(errDesc, "DDERR_HWNDSUBCLASSED: DirectDraw is prevented from restoring state because the DirectDraw cooperative level window handle has been subclassed.");
2032	break;
2033	case DDERR_IMPLICITLYCREATED:
2034	strcpy(errDesc, "DDERR_IMPLICITLYCREATED: The surface cannot be restored because it is an implicitly created surface.");
2035	break;
2036	case DDERR_INCOMPATIBLEPRIMARY:
2037	strcpy(errDesc, "DDERR_INCOMPATIBLEPRIMARY: The primary surface creation request does not match with the existing primary surface.");
2038	break;
2039	case DDERR_INVALIDCAPS:
2040	strcpy(errDesc, "DDERR_INVALIDCAPS: One or more of the capability bits passed to the callback function are incorrect.");
2041	break;
2042	case DDERR_INVALIDCLIPLIST:
2043	strcpy(errDesc, "DDERR_INVALIDCLIPLIST: DirectDraw does not support the provided clip list.");
2044	break;
2045	case DDERR_INVALIDDIRECTDRAWGUID:
2046	strcpy(errDesc, "DDERR_INVALIDDIRECTDRAWGUID: The globally unique identifier (GUID) passed to the DirectDrawCreate function is not a valid DirectDraw driver identifier.");
2047	break;
2048	case DDERR_INVALIDMODE:
2049	strcpy(errDesc, "DDERR_INVALIDMODE: DirectDraw does not support the requested mode.");
2050	break;
2051	case DDERR_INVALIDOBJECT:
2052	strcpy(errDesc, "DDERR_INVALIDOBJECT: DirectDraw received a pointer that was an invalid DirectDraw object.");
2053	break;
2054	case DDERR_INVALIDPARAMS:
2055	strcpy(errDesc, "DDERR_INVALIDPARAMS: One or more of the parameters passed to the method are incorrect.");
2056	break;
2057	case DDERR_INVALIDPIXELFORMAT:
2058	strcpy(errDesc, "DDERR_INVALIDPIXELFORMAT: The pixel format was invalid as specified.");
2059	break;
2060	case DDERR_INVALIDPOSITION:
2061	strcpy(errDesc, "DDERR_INVALIDPOSITION: The position of the overlay on the destination is no longer legal.");
2062	break;
2063	case DDERR_INVALIDRECT:
2064	strcpy(errDesc, "DDERR_INVALIDRECT: The provided rectangle was invalid.");
2065	break;
2066	case DDERR_INVALIDSTREAM:
2067	strcpy(errDesc, "DDERR_INVALIDSTREAM: The specified stream contains invalid data.");
2068	break;
2069	case DDERR_INVALIDSURFACETYPE:
2070	strcpy(errDesc, "DDERR_INVALIDSURFACETYPE: The requested operation could not be performed because the surface was of the wrong type.");
2071	break;
2072	case DDERR_LOCKEDSURFACES:
2073	strcpy(errDesc, "DDERR_LOCKEDSURFACES: One or more surfaces are locked, causing the failure of the requested operation.");
2074	break;
2075	case DDERR_MOREDATA:
2076	strcpy(errDesc, "DDERR_MOREDATA: There is more data available than the specified buffer size can hold.");
2077	break;
2078	case DDERR_NO3D:
2079	strcpy(errDesc, "DDERR_NO3D: No 3-D hardware or emulation is present.");
2080	break;
2081	case DDERR_NOALPHAHW:
2082	strcpy(errDesc, "DDERR_NOALPHAHW: No alpha acceleration hardware is present or available, causing the failure of the requested operation.");
2083	break;
2084	case DDERR_NOBLTHW:
2085	strcpy(errDesc, "DDERR_NOBLTHW: No blitter hardware is present.");
2086	break;
2087	case DDERR_NOCLIPLIST:
2088	strcpy(errDesc, "DDERR_NOCLIPLIST: No clip list is available.");
2089	break;
2090	case DDERR_NOCLIPPERATTACHED:
2091	strcpy(errDesc, "DDERR_NOCLIPPERATTACHED: No DirectDrawClipper object is attached to the surface object.");
2092	break;
2093	case DDERR_NOCOLORCONVHW:
2094	strcpy(errDesc, "DDERR_NOCOLORCONVHW: The operation cannot be carried out because no color-conversion hardware is present or available.");
2095	break;
2096	case DDERR_NOCOLORKEY:
2097	strcpy(errDesc, "DDERR_NOCOLORKEY: The surface does not currently have a color key.");
2098	break;
2099	case DDERR_NOCOLORKEYHW:
2100	strcpy(errDesc, "DDERR_NOCOLORKEYHW: The operation cannot be carried out because there is no hardware support for the destination color key.");
2101	break;
2102	case DDERR_NOCOOPERATIVELEVELSET:
2103	strcpy(errDesc, "DDERR_NOCOOPERATIVELEVELSET: A create function is called without the IDirectDraw7::SetCooperativeLevel method being called.");
2104	break;
2105	case DDERR_NODC:
2106	strcpy(errDesc, "DDERR_NODC: No DC has ever been created for this surface.");
2107	break;
2108	case DDERR_NODDROPSHW:
2109	strcpy(errDesc, "DDERR_NODDROPSHW: No DirectDraw raster operation (ROP) hardware is available.");
2110	break;
2111	case DDERR_NODIRECTDRAWHW:
2112	strcpy(errDesc, "DDERR_NODIRECTDRAWHW: Hardware-only DirectDraw object creation is not possible; the driver does not support any hardware.");
2113	break;
2114	case DDERR_NODIRECTDRAWSUPPORT:
2115	strcpy(errDesc, "DDERR_NODIRECTDRAWSUPPORT: DirectDraw support is not possible with the current display driver.");
2116	break;
2117	case DDERR_NOEMULATION:
2118	strcpy(errDesc, "DDERR_NOEMULATION: Software emulation is not available.");
2119	break;
2120	case DDERR_NOEXCLUSIVEMODE:
2121	strcpy(errDesc, "DDERR_NOEXCLUSIVEMODE: The operation requires the application to have exclusive mode, but the application does not have exclusive mode.");
2122	break;
2123	case DDERR_NOFLIPHW:
2124	strcpy(errDesc, "DDERR_NOFLIPHW: Flipping visible surfaces is not supported.");
2125	break;
2126	case DDERR_NOFOCUSWINDOW:
2127	strcpy(errDesc, "DDERR_NOFOCUSWINDOW: An attempt was made to create or set a device window without first setting the focus window.");
2128	break;
2129	case DDERR_NOGDI:
2130	strcpy(errDesc, "DDERR_NOGDI: No GDI is present.");
2131	break;
2132	case DDERR_NOHWND:
2133	strcpy(errDesc, "DDERR_NOHWND: Clipper notification requires a window handle, or no window handle has been previously set as the cooperative level window handle.");
2134	break;
2135	case DDERR_NOMIPMAPHW:
2136	strcpy(errDesc, "DDERR_NOMIPMAPHW: The operation cannot be carried out because no mipmap capable texture mapping hardware is present or available.");
2137	break;
2138	case DDERR_NOMIRRORHW:
2139	strcpy(errDesc, "DDERR_NOMIRRORHW: The operation cannot be carried out because no mirroring hardware is present or available.");
2140	break;
2141	case DDERR_NONONLOCALVIDMEM:
2142	strcpy(errDesc, "DDERR_NONONLOCALVIDMEM: An attempt was made to allocate non-local video memory from a device that does not support non-local video memory.");
2143	break;
2144	case DDERR_NOOPTIMIZEHW:
2145	strcpy(errDesc, "DDERR_NOOPTIMIZEHW: The device does not support optimized surfaces.");
2146	break;
2147	case DDERR_NOOVERLAYDEST:
2148	strcpy(errDesc, "DDERR_NOOVERLAYDEST: The IDirectDrawSurface4::GetOverlayPosition method is called on an overlay that the IDirectDrawSurface7::UpdateOverlay method has not been called on to establish a destination.");
2149	break;
2150	case DDERR_NOOVERLAYHW:
2151	strcpy(errDesc, "DDERR_NOOVERLAYHW: The operation cannot be carried out because no overlay hardware is present or available.");
2152	break;
2153	case DDERR_NOPALETTEATTACHED:
2154	strcpy(errDesc, "DDERR_NOPALETTEATTACHED: No palette object is attached to this surface.");
2155	break;
2156	case DDERR_NOPALETTEHW:
2157	strcpy(errDesc, "DDERR_NOPALETTEHW: There is no hardware support for 16- or 256-color palettes.");
2158	break;
2159	case DDERR_NORASTEROPHW:
2160	strcpy(errDesc, "DDERR_NORASTEROPHW: The operation cannot be carried out because no appropriate raster operation hardware is present or available.");
2161	break;
2162	case DDERR_NOROTATIONHW:
2163	strcpy(errDesc, "DDERR_NOROTATIONHW: The operation cannot be carried out because no rotation hardware is present or available.");
2164	break;
2165	case DDERR_NOSTRETCHHW:
2166	strcpy(errDesc, "DDERR_NOSTRETCHHW: The operation cannot be carried out because there is no hardware support for stretching.");
2167	break;
2168	case DDERR_NOT4BITCOLOR:
2169	strcpy(errDesc, "DDERR_NOT4BITCOLOR: The DirectDrawSurface object is not using a 4-bit color palette and the requested operation requires a 4-bit color palette.");
2170	break;
2171	case DDERR_NOT4BITCOLORINDEX:
2172	strcpy(errDesc, "DDERR_NOT4BITCOLORINDEX: The DirectDrawSurface object is not using a 4-bit color index palette and the requested operation requires a 4-bit color index palette.");
2173	break;
2174	case DDERR_NOT8BITCOLOR:
2175	strcpy(errDesc, "DDERR_NOT8BITCOLOR: The DirectDrawSurface object is not using an 8-bit color palette and the requested operation requires an 8-bit color palette.");
2176	break;
2177	case DDERR_NOTAOVERLAYSURFACE:
2178	strcpy(errDesc, "DDERR_NOTAOVERLAYSURFACE: An overlay component is called for a non-overlay surface.");
2179	break;
2180	case DDERR_NOTEXTUREHW:
2181	strcpy(errDesc, "DDERR_NOTEXTUREHW: The operation cannot be carried out because no texture-mapping hardware is present or available.");
2182	break;
2183	case DDERR_NOTFLIPPABLE:
2184	strcpy(errDesc, "DDERR_NOTFLIPPABLE: An attempt has been made to flip a surface that cannot be flipped.");
2185	break;
2186	case DDERR_NOTFOUND:
2187	strcpy(errDesc, "DDERR_NOTFOUND: The requested item was not found.");
2188	break;
2189	case DDERR_NOTINITIALIZED:
2190	strcpy(errDesc, "DDERR_NOTINITIALIZED: An attempt was made to call an interface method of a DirectDraw object created by CoCreateInstance before the object was initialized.");
2191	break;
2192	case DDERR_NOTLOADED:
2193	strcpy(errDesc, "DDERR_NOTLOADED: The surface is an optimized surface, but it has not yet been allocated any memory.");
2194	break;
2195	case DDERR_NOTLOCKED:
2196	strcpy(errDesc, "DDERR_NOTLOCKED: An attempt is made to unlock a surface that was not locked.");
2197	break;
2198	case DDERR_NOTPAGELOCKED:
2199	strcpy(errDesc, "DDERR_NOTPAGELOCKED: An attempt is made to page unlock a surface with no outstanding page locks.");
2200	break;
2201	case DDERR_NOTPALETTIZED:
2202	strcpy(errDesc, "DDERR_NOTPALETTIZED: The surface being used is not a palette-based surface.");
2203	break;
2204	case DDERR_NOVSYNCHW:
2205	strcpy(errDesc, "DDERR_NOVSYNCHW: The operation cannot be carried out because there is no hardware support for vertical blank synchronized operations.");
2206	break;
2207	case DDERR_NOZBUFFERHW:
2208	strcpy(errDesc, "DDERR_NOZBUFFERHW: The operation to create a z-buffer in display memory or to perform a blit using a z-buffer cannot be carried out because there is no hardware support for z-buffers.");
2209	break;
2210	case DDERR_NOZOVERLAYHW:
2211	strcpy(errDesc, "DDERR_NOZOVERLAYHW: The overlay surfaces cannot be z-layered based on the z-order because the hardware does not support z-ordering of overlays.");
2212	break;
2213	case DDERR_OUTOFCAPS:
2214	strcpy(errDesc, "DDERR_OUTOFCAPS: The hardware needed for the requested operation has already been allocated.");
2215	break;
2216	case DDERR_OUTOFMEMORY:
2217	strcpy(errDesc, "DDERR_OUTOFMEMORY: DirectDraw does not have enough memory to perform the operation.");
2218	break;
2219	case DDERR_OUTOFVIDEOMEMORY:
2220	strcpy(errDesc, "DDERR_OUTOFVIDEOMEMORY: DirectDraw does not have enough display memory to perform the operation.");
2221	break;
2222	case DDERR_OVERLAPPINGRECTS:
2223	strcpy(errDesc, "DDERR_OVERLAPPINGRECTS: Operation could not be carried out because the source and destination rectangles are on the same surface and overlap each other.");
2224	break;
2225	case DDERR_OVERLAYCANTCLIP:
2226	strcpy(errDesc, "DDERR_OVERLAYCANTCLIP: The hardware does not support clipped overlays.");
2227	break;
2228	case DDERR_OVERLAYCOLORKEYONLYONEACTIVE:
2229	strcpy(errDesc, "DDERR_OVERLAYCOLORKEYONLYONEACTIVE: An attempt was made to have more than one color key active on an overlay.");
2230	break;
2231	case DDERR_OVERLAYNOTVISIBLE:
2232	strcpy(errDesc, "DDERR_OVERLAYNOTVISIBLE: The IDirectDrawSurface7::GetOverlayPosition method is called on a hidden overlay.");
2233	break;
2234	case DDERR_PALETTEBUSY:
2235	strcpy(errDesc, "DDERR_PALETTEBUSY: Access to this palette is refused because the palette is locked by another thread.");
2236	break;
2237	case DDERR_PRIMARYSURFACEALREADYEXISTS:
2238	strcpy(errDesc, "DDERR_PRIMARYSURFACEALREADYEXISTS: This process has already created a primary surface.");
2239	break;
2240	case DDERR_REGIONTOOSMALL:
2241	strcpy(errDesc, "DDERR_REGIONTOOSMALL: The region passed to the IDirectDrawClipper::GetClipList method is too small.");
2242	break;
2243	case DDERR_SURFACEALREADYATTACHED:
2244	strcpy(errDesc, "DDERR_SURFACEALREADYATTACHED: An attempt was made to attach a surface to another surface to which it is already attached.");
2245	break;
2246	case DDERR_SURFACEALREADYDEPENDENT:
2247	strcpy(errDesc, "DDERR_SURFACEALREADYDEPENDENT: An attempt was made to make a surface a dependency of another surface to which it is already dependent.");
2248	break;
2249	case DDERR_SURFACEBUSY:
2250	strcpy(errDesc, "DDERR_SURFACEBUSY: Access to the surface is refused because the surface is locked by another thread.");
2251	break;
2252	case DDERR_SURFACEISOBSCURED:
2253	strcpy(errDesc, "DDERR_SURFACEISOBSCURED: Access to the surface is refused because the surface is obscured.");
2254	break;
2255	case DDERR_SURFACELOST:
2256	strcpy(errDesc, "DDERR_SURFACELOST: Access to the surface is refused because the surface memory is gone. Call the IDirectDrawSurface7::Restore method on this surface to restore the memory associated with it.");
2257	break;
2258	case DDERR_SURFACENOTATTACHED:
2259	strcpy(errDesc, "DDERR_SURFACENOTATTACHED: The requested surface is not attached.");
2260	break;
2261	case DDERR_TOOBIGHEIGHT:
2262	strcpy(errDesc, "DDERR_TOOBIGHEIGHT: The height requested by DirectDraw is too large.");
2263	break;
2264	case DDERR_TOOBIGSIZE:
2265	strcpy(errDesc, "DDERR_TOOBIGSIZE: The size requested by DirectDraw is too large. However, the individual height and width are valid sizes.");
2266	break;
2267	case DDERR_TOOBIGWIDTH:
2268	strcpy(errDesc, "DDERR_TOOBIGWIDTH: The width requested by DirectDraw is too large.");
2269	break;
2270	case DDERR_UNSUPPORTED:
2271	strcpy(errDesc, "DDERR_UNSUPPORTED: The operation is not supported.");
2272	break;
2273	case DDERR_UNSUPPORTEDFORMAT:
2274	strcpy(errDesc, "DDERR_UNSUPPORTEDFORMAT: The FourCC format requested is not supported by DirectDraw.");
2275	break;
2276	case DDERR_UNSUPPORTEDMASK:
2277	strcpy(errDesc, "DDERR_UNSUPPORTEDMASK: The bitmask in the pixel format requested is not supported by DirectDraw.");
2278	break;
2279	case DDERR_UNSUPPORTEDMODE:
2280	strcpy(errDesc, "DDERR_UNSUPPORTEDMODE: The display is currently in an unsupported mode.");
2281	break;
2282	case DDERR_VERTICALBLANKINPROGRESS:
2283	strcpy(errDesc, "DDERR_VERTICALBLANKINPROGRESS: A vertical blank is in progress.");
2284	break;
2285	case DDERR_VIDEONOTACTIVE:
2286	strcpy(errDesc, "DDERR_VIDEONOTACTIVE: The video port is not active.");
2287	break;
2288	case DDERR_WASSTILLDRAWING:
2289	strcpy(errDesc, "DDERR_WASSTILLDRAWING: The previous blit operation that is transferring information to or from this surface is incomplete.");
2290	break;
2291	case DDERR_WRONGMODE:
2292	strcpy(errDesc, "DDERR_WRONGMODE: This surface cannot be restored because it was created in a different mode.");
2293	break;
2294	case DDERR_XALIGN:
2295	strcpy(errDesc, "DDERR_XALIGN: The provided rectangle was not horizontally aligned on a required boundary.");
2296	break;
2297	default:
2298	strcpy(errDesc, "Unknown error code.");
2299	}
2300	}
2301	return errDesc;
2302	}
2303
2304	/*
2305	D3D_OK
2306	D3DERR_BADMAJORVERSION
2307	D3DERR_BADMINORVERSION
2308	D3DERR_COLORKEYATTACHED
2309	D3DERR_CONFLICTINGTEXTUREFILTER
2310	D3DERR_CONFLICTINGTEXTUREPALETTE
2311	D3DERR_CONFLICTINGRENDERSTATE
2312	D3DERR_DEVICEAGGREGATED (new for DirectX 5.0)
2313	D3DERR_EXECUTE_CLIPPED_FAILED
2314	D3DERR_EXECUTE_CREATE_FAILED
2315	D3DERR_EXECUTE_DESTROY_FAILED
2316	D3DERR_EXECUTE_FAILED
2317	D3DERR_EXECUTE_LOCK_FAILED
2318	D3DERR_EXECUTE_LOCKED
2319	D3DERR_EXECUTE_NOT_LOCKED
2320	D3DERR_EXECUTE_UNLOCK_FAILED
2321	D3DERR_INITFAILED (new for DirectX 5.0)
2322	D3DERR_INBEGIN (new for DirectX 5.0)
2323	D3DERR_INVALID_DEVICE (new for DirectX 5.0)
2324	D3DERR_INVALIDCURRENTVIEWPORT (new for DirectX 5.0)
2325	D3DERR_INVALIDMATRIX
2326	D3DERR_INVALIDPALETTE(new for DirectX 5.0)
2327	D3DERR_INVALIDPRIMITIVETYPE (new for DirectX 5.0)
2328	D3DERR_INVALIDRAMPTEXTURE (new for DirectX 5.0)
2329	D3DERR_INVALIDVERTEXFORMAT (new for DirectX 6.0)
2330	D3DERR_INVALIDVERTEXTYPE (new for DirectX 5.0)
2331	D3DERR_LIGHT_SET_FAILED
2332	D3DERR_LIGHTHASVIEWPORT (new for DirectX 5.0)
2333	D3DERR_LIGHTNOTINTHISVIEWPORT (new for DirectX 5.0)
2334	D3DERR_MATERIAL_CREATE_FAILED
2335	D3DERR_MATERIAL_DESTROY_FAILED
2336	D3DERR_MATERIAL_GETDATA_FAILED
2337	D3DERR_MATERIAL_SETDATA_FAILED
2338	D3DERR_MATRIX_CREATE_FAILED
2339	D3DERR_MATRIX_DESTROY_FAILED
2340	D3DERR_MATRIX_GETDATA_FAILED
2341	D3DERR_MATRIX_SETDATA_FAILED
2342	D3DERR_NOCURRENTVIEWPORT (new for DirectX 5.0)
2343	D3DERR_NOTINBEGIN (new for DirectX 5.0)
2344	D3DERR_NOVIEWPORTS (new for DirectX 5.0)
2345	D3DERR_SCENE_BEGIN_FAILED
2346	D3DERR_SCENE_END_FAILED
2347	D3DERR_SCENE_IN_SCENE
2348	D3DERR_SCENE_NOT_IN_SCENE
2349	D3DERR_SETVIEWPORTDATA_FAILED
2350	D3DERR_STENCILBUFFER_NOTPRESENT
2351	D3DERR_SURFACENOTINVIDMEM (new for DirectX 5.0)
2352	D3DERR_TEXTURE_BADSIZE (new for DirectX 5.0)
2353	D3DERR_TEXTURE_CREATE_FAILED
2354	D3DERR_TEXTURE_DESTROY_FAILED
2355	D3DERR_TEXTURE_GETSURF_FAILED
2356	D3DERR_TEXTURE_LOAD_FAILED
2357	D3DERR_TEXTURE_LOCK_FAILED
2358	D3DERR_TEXTURE_LOCKED
2359	D3DERR_TEXTURE_NO_SUPPORT
2360	D3DERR_TEXTURE_NOT_LOCKED
2361	D3DERR_TEXTURE_SWAP_FAILED
2362	D3DERR_TEXTURE_UNLOCK_FAILED
2363	D3DERR_TOOMANYOPERATIONS
2364	D3DERR_TOOMANYPRIMITIVES
2365	D3DERR_UNSUPPORTEDALPHAARG
2366	D3DERR_UNSUPPORTEDALPHAOPERATION
2367	D3DERR_UNSUPPORTEDCOLORARG
2368	D3DERR_UNSUPPORTEDCOLOROPERATION
2369	D3DERR_UNSUPPORTEDFACTORVALUE
2370	D3DERR_UNSUPPORTEDTEXTUREFILTER
2371	D3DERR_VBUF_CREATE_FAILED
2372	D3DERR_VERTEXBUFFERLOCKED
2373	D3DERR_VERTEXBUFFEROPTIMIZED
2374	D3DERR_VIEWPORTDATANOTSET (new for DirectX 5.0)
2375	D3DERR_VIEWPORTHASNODEVICE (new for DirectX 5.0)
2376	D3DERR_WRONGTEXTUREFORMAT
2377	D3DERR_ZBUFF_NEEDS_SYSTEMMEMORY (new for DirectX 5.0)
2378	D3DERR_ZBUFF_NEEDS_VIDEOMEMORY (new for DirectX 5.0)
2379	D3DERR_ZBUFFER_NOTPRESENT
2380	*/
2381
2382	//-----------------------------------------------------------------------
2383	DDDriverList* D3DRenderSystem::getDirectDrawDrivers(void)
2384	{
2385	if (!mDriverList)
2386	{
2387	mDriverList = new DDDriverList;
2388	}
2389
2390	return mDriverList;
2391	}
2392	//-----------------------------------------------------------------------
2393	void D3DRenderSystem::setLightingEnabled(bool enabled)
2394	{
2395	// Call D3D
2396	HRESULT hr = __SetRenderState(D3DRENDERSTATE_LIGHTING, enabled);
2397	if (FAILED(hr))
2398	OGRE_EXCEPT(hr, "Error lighting status.", "D3DRenderSystem::setLightingEnabled");
2399	}
2400	//-----------------------------------------------------------------------
2401	void D3DRenderSystem::_setFog(FogMode mode, const ColourValue& colour, Real density, Real start, Real end)
2402	{
2403	HRESULT hr;
2404
2405	D3DRENDERSTATETYPE fogType, fogTypeNot;
2406
2407	if (mD3DDeviceDesc.dpcTriCaps.dwRasterCaps & D3DPRASTERCAPS_FOGTABLE)
2408	{
2409	fogType = D3DRENDERSTATE_FOGTABLEMODE;
2410	fogTypeNot = D3DRENDERSTATE_FOGVERTEXMODE;
2411	}
2412	else
2413	{
2414	fogType = D3DRENDERSTATE_FOGVERTEXMODE;
2415	fogTypeNot = D3DRENDERSTATE_FOGTABLEMODE;
2416	}
2417
2418	if( mode == FOG_NONE)
2419	{
2420	// just disable
2421	hr = __SetRenderState(fogType, D3DFOG_NONE );
2422	hr = __SetRenderState(D3DRENDERSTATE_FOGENABLE, FALSE);
2423	}
2424	else
2425	{
2426	// Allow fog
2427	hr = __SetRenderState( D3DRENDERSTATE_FOGENABLE, TRUE );
2428	hr = __SetRenderState( fogTypeNot, D3DFOG_NONE );
2429	switch(mode)
2430	{
2431	case FOG_EXP:
2432	hr = __SetRenderState( fogType, D3DFOG_EXP);
2433	break;
2434	case FOG_EXP2:
2435	hr = __SetRenderState( fogType, D3DFOG_EXP2);
2436	break;
2437	case FOG_LINEAR:
2438	hr = __SetRenderState( fogType, D3DFOG_LINEAR);
2439	break;
2440
2441	}
2442
2443	hr = __SetRenderState( D3DRENDERSTATE_FOGCOLOR, colour.getAsARGB() );
2444	hr = __SetRenderState( D3DRENDERSTATE_FOGSTART, *((LPDWORD)(&start)) );
2445	hr = __SetRenderState( D3DRENDERSTATE_FOGEND, *((LPDWORD)(&end)) );
2446	hr = __SetRenderState( D3DRENDERSTATE_FOGDENSITY, *((LPDWORD)(&density)) );
2447	}
2448
2449
2450	}
2451
2452	//---------------------------------------------------------------------
2453	void D3DRenderSystem::convertColourValue(const ColourValue& colour, uint32* pDest)
2454	{
2455	*pDest = colour.getAsARGB();
2456	}
2457	//---------------------------------------------------------------------
2458	void D3DRenderSystem::_makeProjectionMatrix(const Radian& fovy, Real aspect,
2459	Real nearPlane, Real farPlane, Matrix4& dest, bool forGpuProgram)
2460	{
2461	Radian theta(fovy * 0.5);
2462	Real h = 1 / Math::Tan(theta);
2463	Real w = h / aspect;
2464	Real q, qn;
2465	if (farPlane == 0)
2466	{
2467	q = 1 - Frustum::INFINITE_FAR_PLANE_ADJUST;
2468	qn = nearPlane * (Frustum::INFINITE_FAR_PLANE_ADJUST - 1);
2469	}
2470	else
2471	{
2472	q = farPlane / ( farPlane - nearPlane );
2473	qn = -q * nearPlane;
2474	}
2475
2476	dest = Matrix4::ZERO;
2477	dest[0][0] = w;
2478	dest[1][1] = h;
2479
2480	if (forGpuProgram)
2481	{
2482	dest[2][2] = -q;
2483	dest[3][2] = -1.0f;
2484	}
2485	else
2486	{
2487	dest[2][2] = q;
2488	dest[3][2] = 1.0f;
2489	}
2490
2491	dest[2][3] = qn;
2492
2493	}
2494	//---------------------------------------------------------------------
2495	void D3DRenderSystem::_makeOrthoMatrix(const Radian& fovy, Real aspect, Real nearPlane, Real farPlane,
2496	Matrix4& dest, bool forGpuProgram )
2497	{
2498	Radian thetaY (fovy / 2.0f);
2499	Real tanThetaY = Math::Tan(thetaY);
2500
2501	//Real thetaX = thetaY * aspect;
2502	Real tanThetaX = tanThetaY * aspect; //Math::Tan(thetaX);
2503	Real half_w = tanThetaX * nearPlane;
2504	Real half_h = tanThetaY * nearPlane;
2505	Real iw = 1.0 / half_w;
2506	Real ih = 1.0 / half_h;
2507	Real q;
2508	if (farPlane == 0)
2509	{
2510	q = 0;
2511	}
2512	else
2513	{
2514	q = 1.0 / (farPlane - nearPlane);
2515	}
2516
2517	dest = Matrix4::ZERO;
2518	dest[0][0] = iw;
2519	dest[1][1] = ih;
2520	dest[2][2] = q;
2521	dest[2][3] = -nearPlane / (farPlane - nearPlane);
2522	dest[3][3] = 1;
2523
2524	if (forGpuProgram)
2525	{
2526	dest[2][2] = -dest[2][2];
2527	}
2528	}
2529	//---------------------------------------------------------------------
2530	void D3DRenderSystem::_setRasterisationMode(SceneDetailLevel level)
2531	{
2532	D3DFILLMODE d3dmode;
2533
2534	switch(level)
2535	{
2536	case SDL_POINTS:
2537	d3dmode = D3DFILL_POINT;
2538	break;
2539	case SDL_WIREFRAME:
2540	d3dmode = D3DFILL_WIREFRAME;
2541	break;
2542	case SDL_SOLID:
2543	d3dmode = D3DFILL_SOLID;
2544	break;
2545
2546	}
2547
2548	HRESULT hr = __SetRenderState(D3DRENDERSTATE_FILLMODE, d3dmode);
2549	if (FAILED(hr))
2550	{
2551	OGRE_EXCEPT(hr, "Error setting rasterisation mode.",
2552	"D3DRenderSystem::setRasterisationMode");
2553	}
2554
2555
2556	}
2557	//---------------------------------------------------------------------
2558	void D3DRenderSystem::setStencilCheckEnabled(bool enabled)
2559	{
2560	// Allow stencilling
2561	HRESULT hr = __SetRenderState(D3DRENDERSTATE_STENCILENABLE, enabled);
2562	if (FAILED(hr))
2563	OGRE_EXCEPT(hr, "Error enabling / disabling stencilling.",
2564	"D3DRenderSystem::setStencilCheckEnabled");
2565
2566	}
2567	//---------------------------------------------------------------------
2568	void D3DRenderSystem::setStencilBufferParams(CompareFunction func,
2569	uint32 refValue, uint32 mask, StencilOperation stencilFailOp,
2570	StencilOperation depthFailOp, StencilOperation passOp,
2571	bool twoSidedOperation)
2572	{
2573	HRESULT hr;
2574
2575	// D3D7 does not support 2-sided stencil operations
2576	if (twoSidedOperation)
2577	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Direct3D7 does not support 2-sided stencil ops",
2578	"D3DRenderSystem::setStencilBufferParams");
2579
2580	// Function
2581	hr = __SetRenderState(D3DRENDERSTATE_STENCILFUNC,
2582	convertCompareFunction(func));
2583
2584	if (FAILED(hr))
2585	OGRE_EXCEPT(hr, "Error setting stencil buffer test function.",
2586	"D3DRenderSystem::setStencilBufferParams");
2587
2588	// reference value
2589	hr = __SetRenderState(D3DRENDERSTATE_STENCILREF, refValue);
2590	if (FAILED(hr))
2591	OGRE_EXCEPT(hr, "Error setting stencil buffer reference value.",
2592	"D3DRenderSystem::setStencilBufferParams");
2593
2594	// mask
2595	hr = __SetRenderState(D3DRENDERSTATE_STENCILMASK, mask);
2596	if (FAILED(hr))
2597	OGRE_EXCEPT(hr, "Error setting stencil buffer mask.",
2598	"D3DRenderSystem::setStencilBufferParams");
2599
2600	// fail op
2601	hr = __SetRenderState(D3DRENDERSTATE_STENCILFAIL,
2602	convertStencilOp(stencilFailOp));
2603	if (FAILED(hr))
2604	OGRE_EXCEPT(hr, "Error setting stencil fail operation.",
2605	"D3DRenderSystem::setStencilBufferParams");
2606
2607	// depth fail op
2608	hr = __SetRenderState(D3DRENDERSTATE_STENCILZFAIL,
2609	convertStencilOp(depthFailOp));
2610	if (FAILED(hr))
2611	OGRE_EXCEPT(hr, "Error setting stencil depth fail operation.",
2612	"D3DRenderSystem::setStencilBufferParams");
2613
2614	// pass op
2615	hr = __SetRenderState(D3DRENDERSTATE_STENCILPASS,
2616	convertStencilOp(passOp));
2617	if (FAILED(hr))
2618	OGRE_EXCEPT(hr, "Error setting stencil pass operation.",
2619	"D3DRenderSystem::setStencilBufferParams");
2620	}
2621	//---------------------------------------------------------------------
2622	D3DCMPFUNC D3DRenderSystem::convertCompareFunction(CompareFunction func)
2623	{
2624	switch(func)
2625	{
2626	case CMPF_ALWAYS_FAIL:
2627	return D3DCMP_NEVER;
2628	case CMPF_ALWAYS_PASS:
2629	return D3DCMP_ALWAYS;
2630	case CMPF_LESS:
2631	return D3DCMP_LESS;
2632	case CMPF_LESS_EQUAL:
2633	return D3DCMP_LESSEQUAL;
2634	case CMPF_EQUAL:
2635	return D3DCMP_EQUAL;
2636	case CMPF_NOT_EQUAL:
2637	return D3DCMP_NOTEQUAL;
2638	case CMPF_GREATER_EQUAL:
2639	return D3DCMP_GREATEREQUAL;
2640	case CMPF_GREATER:
2641	return D3DCMP_GREATER;
2642	};
2643	// to shut the compiler up
2644	return D3DCMP_ALWAYS;
2645	}
2646	//---------------------------------------------------------------------
2647	D3DSTENCILOP D3DRenderSystem::convertStencilOp(StencilOperation op)
2648	{
2649	switch(op)
2650	{
2651	case SOP_KEEP:
2652	return D3DSTENCILOP_KEEP;
2653	case SOP_ZERO:
2654	return D3DSTENCILOP_ZERO;
2655	case SOP_REPLACE:
2656	return D3DSTENCILOP_REPLACE;
2657	case SOP_INCREMENT:
2658	return D3DSTENCILOP_INCRSAT;
2659	case SOP_DECREMENT:
2660	return D3DSTENCILOP_DECRSAT;
2661	case SOP_INCREMENT_WRAP:
2662	return D3DSTENCILOP_INCR;
2663	case SOP_DECREMENT_WRAP:
2664	return D3DSTENCILOP_DECR;
2665	case SOP_INVERT:
2666	return D3DSTENCILOP_INVERT;
2667	};
2668	// To shut the compiler up
2669	return D3DSTENCILOP_KEEP;
2670	}
2671
2672	DWORD D3DRenderSystem::_getCurrentAnisotropy(size_t unit)
2673	{
2674	DWORD oldVal;
2675	mlpD3DDevice->GetTextureStageState(unit, D3DTSS_MAXANISOTROPY, &oldVal);
2676	return oldVal;
2677	}
2678
2679
2680	void D3DRenderSystem::_setTextureUnitFiltering(size_t unit,
2681	FilterType ftype, FilterOptions filter)
2682	{
2683	__SetTextureStageState(unit, _getFilterCode(ftype), _getFilter(ftype, filter));
2684	}
2685
2686	void D3DRenderSystem::_setTextureLayerAnisotropy(size_t unit, unsigned int maxAnisotropy)
2687	{
2688	if ((DWORD)maxAnisotropy > mD3DDeviceDesc.dwMaxAnisotropy)
2689	maxAnisotropy = mD3DDeviceDesc.dwMaxAnisotropy;
2690
2691	if (_getCurrentAnisotropy(unit) != maxAnisotropy)
2692	__SetTextureStageState( unit, D3DTSS_MAXANISOTROPY, maxAnisotropy );
2693	}
2694
2695	void D3DRenderSystem::setVertexDeclaration(VertexDeclaration* decl)
2696	{
2697	// TODO
2698	}
2699
2700	void D3DRenderSystem::setVertexBufferBinding(VertexBufferBinding* binding)
2701	{
2702	// TODO
2703	}
2704	//-----------------------------------------------------------------------
2705	D3DTEXTURESTAGESTATETYPE D3DRenderSystem::_getFilterCode(FilterType ft) const
2706	{
2707	switch (ft)
2708	{
2709	case FT_MIN:
2710	return D3DTSS_MINFILTER;
2711	break;
2712	case FT_MAG:
2713	return D3DTSS_MAGFILTER;
2714	break;
2715	case FT_MIP:
2716	return D3DTSS_MIPFILTER;
2717	break;
2718	}
2719
2720	// to keep compiler happy
2721	return D3DTSS_MINFILTER;
2722	}
2723	//-----------------------------------------------------------------------
2724	DWORD D3DRenderSystem::_getFilter(FilterType ft, FilterOptions fo) const
2725	{
2726	switch (ft)
2727	{
2728	case FT_MIN:
2729	switch( fo )
2730	{
2731	// NOTE: Fall through if device doesn't support requested type
2732	case FO_ANISOTROPIC:
2733	if( mD3DDeviceDesc.dpcTriCaps.dwTextureFilterCaps & D3DPTFILTERCAPS_MINFANISOTROPIC )
2734	{
2735	return D3DTFN_ANISOTROPIC;
2736	break;
2737	}
2738	case FO_LINEAR:
2739	if( mD3DDeviceDesc.dpcTriCaps.dwTextureFilterCaps & D3DPTFILTERCAPS_MINFLINEAR )
2740	{
2741	return D3DTFN_LINEAR;
2742	break;
2743	}
2744	case FO_POINT:
2745	case FO_NONE:
2746	return D3DTFN_POINT;
2747	break;
2748	}
2749	break;
2750	case FT_MAG:
2751	switch( fo )
2752	{
2753	// NOTE: Fall through if device doesn't support requested type
2754	case FO_ANISOTROPIC:
2755	if( mD3DDeviceDesc.dpcTriCaps.dwTextureFilterCaps & D3DPTFILTERCAPS_MAGFANISOTROPIC )
2756	{
2757	return D3DTFG_ANISOTROPIC;
2758	break;
2759	}
2760	case FO_LINEAR:
2761	if( mD3DDeviceDesc.dpcTriCaps.dwTextureFilterCaps & D3DPTFILTERCAPS_MAGFLINEAR )
2762	{
2763	return D3DTFG_LINEAR;
2764	break;
2765	}
2766	case FO_POINT:
2767	case FO_NONE:
2768	return D3DTFG_POINT;
2769	break;
2770	}
2771	break;
2772	case FT_MIP:
2773	switch( fo )
2774	{
2775	case FO_ANISOTROPIC:
2776	case FO_LINEAR:
2777	if( mD3DDeviceDesc.dpcTriCaps.dwTextureFilterCaps & D3DPTFILTERCAPS_LINEARMIPLINEAR )
2778	{
2779	return D3DTFP_LINEAR;
2780	break;
2781	}
2782	case FO_POINT:
2783	if( mD3DDeviceDesc.dpcTriCaps.dwTextureFilterCaps & D3DPTFILTERCAPS_LINEAR )
2784	{
2785	return D3DTFP_POINT;
2786	break;
2787	}
2788	case FO_NONE:
2789	return D3DTFP_NONE;
2790	break;
2791	}
2792	break;
2793	}
2794
2795	// should never get here
2796	return 0;
2797	}
2798	//---------------------------------------------------------------------
2799	void D3DRenderSystem::setNormaliseNormals(bool normalise)
2800	{
2801	__SetRenderState(D3DRENDERSTATE_NORMALIZENORMALS,
2802	normalise ? TRUE : FALSE);
2803	}
2804	//---------------------------------------------------------------------
2805	HRESULT D3DRenderSystem::__SetRenderState(D3DRENDERSTATETYPE state, DWORD value)
2806	{
2807	HRESULT hr;
2808	DWORD oldVal;
2809
2810	if ( FAILED( hr = mlpD3DDevice->GetRenderState(state, &oldVal) ) )
2811	return hr;
2812	if ( oldVal == value )
2813	return D3D_OK;
2814	else
2815	return mlpD3DDevice->SetRenderState(state, value);
2816	}
2817	//---------------------------------------------------------------------
2818	HRESULT D3DRenderSystem::__SetTextureStageState(DWORD stage, D3DTEXTURESTAGESTATETYPE type, DWORD value)
2819	{
2820	HRESULT hr;
2821	DWORD oldVal;
2822
2823	if ( FAILED( hr = mlpD3DDevice->GetTextureStageState(stage, type, &oldVal) ) )
2824	return hr;
2825	if ( oldVal == value )
2826	return D3D_OK;
2827	else
2828	return mlpD3DDevice->SetTextureStageState(stage, type, value);
2829	}
2830
2831	//---------------------------------------------------------------------
2832	void D3DRenderSystem::clearFrameBuffer(unsigned int buffers,
2833	const ColourValue& colour, Real depth, unsigned short stencil)
2834	{
2835	if (mDeviceLost)
2836	return;
2837
2838	DWORD flags = 0;
2839	if (buffers & FBT_COLOUR)
2840	{
2841	flags \|= D3DCLEAR_TARGET;
2842	}
2843	if (buffers & FBT_DEPTH)
2844	{
2845	flags \|= D3DCLEAR_ZBUFFER;
2846	}
2847	// Only try to clear the stencil if supported, otherwise it will fail
2848	if (buffers & FBT_STENCIL && mCapabilities->hasCapability(RSC_HWSTENCIL))
2849	{
2850	flags \|= D3DCLEAR_STENCIL;
2851	}
2852	HRESULT hr;
2853	if( FAILED( hr = mlpD3DDevice->Clear(
2854	0,
2855	NULL,
2856	flags,
2857	colour.getAsARGB(),
2858	depth,
2859	stencil ) ) )
2860	{
2861	String msg = getErrorDescription(hr);
2862	OGRE_EXCEPT( hr, "Error clearing frame buffer : "
2863	+ msg, "D3DRenderSystem::clearFrameBuffer" );
2864	}
2865	}
2866	//---------------------------------------------------------------------
2867	void D3DRenderSystem::_makeProjectionMatrix(Real left, Real right,
2868	Real bottom, Real top, Real nearPlane, Real farPlane, Matrix4& dest,
2869	bool forGpuProgram)
2870	{
2871	Real width = right - left;
2872	Real height = top - bottom;
2873	Real q, qn;
2874	if (farPlane == 0)
2875	{
2876	q = 1 - Frustum::INFINITE_FAR_PLANE_ADJUST;
2877	qn = nearPlane * (Frustum::INFINITE_FAR_PLANE_ADJUST - 1);
2878	}
2879	else
2880	{
2881	q = farPlane / ( farPlane - nearPlane );
2882	qn = -q * nearPlane;
2883	}
2884	dest = Matrix4::ZERO;
2885	dest[0][0] = 2 * nearPlane / width;
2886	dest[0][2] = (right+left) / width;
2887	dest[1][1] = 2 * nearPlane / height;
2888	dest[1][2] = (top+bottom) / height;
2889	if (forGpuProgram)
2890	{
2891	dest[2][2] = -q;
2892	dest[3][2] = -1.0f;
2893	}
2894	else
2895	{
2896	dest[2][2] = q;
2897	dest[3][2] = 1.0f;
2898	}
2899	dest[2][3] = qn;
2900	}
2901
2902	//---------------------------------------------------------------------
2903	void D3DRenderSystem::setClipPlanes(const PlaneList& clipPlanes)
2904	{
2905	size_t i;
2906	size_t numClipPlanes;
2907	D3DVALUE dx7ClipPlane[4];
2908	DWORD mask = 0;
2909	HRESULT hr;
2910	numClipPlanes = clipPlanes.size();
2911
2912	for (i = 0; i < numClipPlanes; ++i)
2913	{
2914	const Plane& plane = clipPlanes[i];
2915
2916	dx7ClipPlane[0] = plane.normal.x;
2917	dx7ClipPlane[1] = plane.normal.y;
2918	dx7ClipPlane[2] = plane.normal.z;
2919	dx7ClipPlane[3] = plane.d;
2920
2921	hr = mlpD3DDevice->SetClipPlane(i, dx7ClipPlane);
2922	if (FAILED(hr))
2923	{
2924	OGRE_EXCEPT(hr, "Unable to set clip plane",
2925	"D3D7RenderSystem::setClipPlanes");
2926	}
2927
2928	mask \|= (1 << i);
2929	}
2930
2931	hr = mlpD3DDevice->SetRenderState(D3DRENDERSTATE_CLIPPLANEENABLE, mask);
2932	if (FAILED(hr))
2933	{
2934	OGRE_EXCEPT(hr, "Unable to set render state for clip planes",
2935	"D3D7RenderSystem::setClipPlanes");
2936	}
2937	}
2938
2939	// ------------------------------------------------------------------
2940	void D3DRenderSystem::setClipPlane (ushort index, Real A, Real B, Real C, Real D)
2941	{
2942	float plane[4] = { A, B, C, D };
2943	mlpD3DDevice->SetClipPlane (index, plane);
2944	}
2945
2946	// ------------------------------------------------------------------
2947	void D3DRenderSystem::enableClipPlane (ushort index, bool enable)
2948	{
2949	DWORD prev;
2950	mlpD3DDevice->GetRenderState(D3DRENDERSTATE_CLIPPLANEENABLE, &prev);
2951	__SetRenderState(D3DRENDERSTATE_CLIPPLANEENABLE, prev \| (1 << index));
2952	}
2953	//---------------------------------------------------------------------
2954	HardwareOcclusionQuery* D3DRenderSystem::createHardwareOcclusionQuery(void)
2955	{
2956	return (HardwareOcclusionQuery*) 0; // Hardware occlusion is not supported when DirectX7 is used
2957	}
2958	//-----------------------------------------------------------------------
2959	void D3DRenderSystem::_setColourBufferWriteEnabled(bool red, bool green, bool blue, bool alpha)
2960	{
2961	// D3D7 does not have a colour write mask setting, so emulate it using
2962	// scene blending, on the assumption that setSceneBlend will be called
2963	// before this
2964	if (red \|\| green \|\| blue \|\| alpha)
2965	{
2966	// restore saved scene blend
2967	_setSceneBlending(mSavedSrcFactor, mSavedDestFactor);
2968	}
2969	else
2970	{
2971	_setSceneBlending(SBF_ZERO, SBF_ONE);
2972	}
2973	}
2974	//---------------------------------------------------------------------
2975	Real D3DRenderSystem::getHorizontalTexelOffset(void)
2976	{
2977	// D3D considers the origin to be in the center of a pixel
2978	return -0.5f;
2979	}
2980	//---------------------------------------------------------------------
2981	Real D3DRenderSystem::getVerticalTexelOffset(void)
2982	{
2983	// D3D considers the origin to be in the center of a pixel
2984	return -0.5f;
2985	}
2986	//---------------------------------------------------------------------
2987	void D3DRenderSystem::_applyObliqueDepthProjection(Matrix4& matrix,
2988	const Plane& plane, bool forGpuProgram)
2989	{
2990	// Thanks to Eric Lenyel for posting this calculation at www.terathon.com
2991
2992	// Calculate the clip-space corner point opposite the clipping plane
2993	// as (sgn(clipPlane.x), sgn(clipPlane.y), 1, 1) and
2994	// transform it into camera space by multiplying it
2995	// by the inverse of the projection matrix
2996
2997	/* generalised version
2998	Vector4 q = matrix.inverse() *
2999	Vector4(Math::Sign(plane.normal.x), Math::Sign(plane.normal.y), 1.0f, 1.0f);
3000	*/
3001	Vector4 q;
3002	q.x = Math::Sign(plane.normal.x) / matrix[0][0];
3003	q.y = Math::Sign(plane.normal.y) / matrix[1][1];
3004	q.z = 1.0F;
3005	// flip the next bit from Lengyel since we're right-handed
3006	if (forGpuProgram)
3007	{
3008	q.w = (1.0F - matrix[2][2]) / matrix[2][3];
3009	}
3010	else
3011	{
3012	q.w = (1.0F + matrix[2][2]) / matrix[2][3];
3013	}
3014
3015	// Calculate the scaled plane vector
3016	Vector4 clipPlane4d(plane.normal.x, plane.normal.y, plane.normal.z, plane.d);
3017	Vector4 c = clipPlane4d * (1.0F / (clipPlane4d.dotProduct(q)));
3018
3019	// Replace the third row of the projection matrix
3020	matrix[2][0] = c.x;
3021	matrix[2][1] = c.y;
3022	// flip the next bit from Lengyel since we're right-handed
3023	if (forGpuProgram)
3024	{
3025	matrix[2][2] = c.z;
3026	}
3027	else
3028	{
3029	matrix[2][2] = -c.z;
3030	}
3031	matrix[2][3] = c.w;
3032
3033	}
3034	//---------------------------------------------------------------------
3035	Real D3DRenderSystem::getMinimumDepthInputValue(void)
3036	{
3037	// Range [0.0f, 1.0f]
3038	return 0.0f;
3039	}
3040	//---------------------------------------------------------------------
3041	Real D3DRenderSystem::getMaximumDepthInputValue(void)
3042	{
3043	// Range [0.0f, 1.0f]
3044	// D3D inverts even identity view matrices, so maximum INPUT is -1.0
3045	return -1.0f;
3046	}
3047
3048
3049	}

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