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source: code/trunk/src/external/ogreceguirenderer/OgreCEGUIRenderer.cpp @ 5738

Last change on this file since 5738 was 5738, checked in by landauf, 15 years ago
merged libraries2 back to trunk
Property svn:eol-style set to `native`
File size: 27.3 KB

Line
1	/************************************************************************
2	filename: OgreCEGUIRenderer.cpp
3	created: 11/5/2004
4	author: Paul D Turner
5
6	purpose: Implementation of Renderer class for Ogre engine
7	*************************************************************************/
8	/*************************************************************************
9	Crazy Eddie's GUI System (http://www.cegui.org.uk)
10	Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)
11
12	This library is free software; you can redistribute it and/or
13	modify it under the terms of the GNU Lesser General Public
14	License as published by the Free Software Foundation; either
15	version 2.1 of the License, or (at your option) any later version.
16
17	This library is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	Lesser General Public License for more details.
21
22	You should have received a copy of the GNU Lesser General Public
23	License along with this library; if not, write to the Free Software
24	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25	*************************************************************************/
26
27	#include <CEGUIImagesetManager.h>
28	#include <CEGUIImageset.h>
29	#include <CEGUIImage.h>
30	#include <CEGUIExceptions.h>
31	#include <CEGUISystem.h>
32
33	#include "OgreCEGUIRenderer.h"
34	#include "OgreCEGUITexture.h"
35	#include "OgreCEGUIResourceProvider.h"
36
37	#include <OgreRenderSystem.h>
38	#include <OgreRoot.h>
39	#include <OgreHardwareBufferManager.h>
40	#include <OgreRenderWindow.h>
41
42	// Start of CEGUI namespace section
43	namespace CEGUI
44	{
45	/*************************************************************************
46	Constants definitions
47	*************************************************************************/
48	const size_t OgreCEGUIRenderer::VERTEX_PER_QUAD = 6;
49	const size_t OgreCEGUIRenderer::VERTEX_PER_TRIANGLE = 3;
50	const size_t OgreCEGUIRenderer::VERTEXBUFFER_INITIAL_CAPACITY = 256;
51	const size_t OgreCEGUIRenderer::UNDERUSED_FRAME_THRESHOLD = 50000; // halfs buffer every 8 minutes on 100fps
52
53	/*************************************************************************
54	Utility function to create a render operation and vertex buffer to render quads
55	*************************************************************************/
56	static void createQuadRenderOp(Ogre::RenderOperation &d_render_op,
57	Ogre::HardwareVertexBufferSharedPtr &d_buffer, size_t nquads)
58	{
59	using namespace Ogre;
60	// Create and initialise the Ogre specific parts required for use in rendering later.
61	d_render_op.vertexData = new VertexData;
62	d_render_op.vertexData->vertexStart = 0;
63
64	// setup vertex declaration for the vertex format we use
65	VertexDeclaration* vd = d_render_op.vertexData->vertexDeclaration;
66	size_t vd_offset = 0;
67	vd->addElement(0, vd_offset, VET_FLOAT3, VES_POSITION);
68	vd_offset += VertexElement::getTypeSize(VET_FLOAT3);
69	vd->addElement(0, vd_offset, VET_COLOUR, VES_DIFFUSE);
70	vd_offset += VertexElement::getTypeSize(VET_COLOUR);
71	vd->addElement(0, vd_offset, VET_FLOAT2, VES_TEXTURE_COORDINATES);
72
73	// create hardware vertex buffer
74	d_buffer = HardwareBufferManager::getSingleton().createVertexBuffer(vd->getVertexSize(0), nquads,
75	HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE, false);
76
77	// bind vertex buffer
78	d_render_op.vertexData->vertexBufferBinding->setBinding(0, d_buffer);
79
80	// complete render operation basic initialisation
81	d_render_op.operationType = RenderOperation::OT_TRIANGLE_LIST;
82	d_render_op.useIndexes = false;
83	}
84
85	static void destroyQuadRenderOp(Ogre::RenderOperation &d_render_op,
86	Ogre::HardwareVertexBufferSharedPtr &d_buffer)
87	{
88	delete d_render_op.vertexData;
89	d_render_op.vertexData = 0;
90	d_buffer.setNull();
91	}
92
93	/*************************************************************************
94	Constructor
95	*************************************************************************/
96	OgreCEGUIRenderer::OgreCEGUIRenderer(Ogre::RenderWindow* window, Ogre::uint8 queue_id, bool post_queue, uint max_quads)
97	{
98	constructor_impl(window, queue_id, post_queue, max_quads);
99	}
100
101
102	/*************************************************************************
103	Constructor (specifying scene manager)
104	*************************************************************************/
105	OgreCEGUIRenderer::OgreCEGUIRenderer(Ogre::RenderWindow* window, Ogre::uint8 queue_id, bool post_queue, uint max_quads, Ogre::SceneManager* scene_manager)
106	{
107	constructor_impl(window, queue_id, post_queue, max_quads);
108
109	// hook into ogre rendering system
110	setTargetSceneManager(scene_manager);
111	}
112
113
114	/*************************************************************************
115	Destructor
116	*************************************************************************/
117	OgreCEGUIRenderer::~OgreCEGUIRenderer(void)
118	{
119	setTargetSceneManager(NULL);
120
121	if (d_ourlistener)
122	{
123	delete d_ourlistener;
124	}
125
126	// cleanup vertex data we allocated in constructor
127	destroyQuadRenderOp(d_render_op, d_buffer);
128	destroyQuadRenderOp(d_direct_render_op, d_direct_buffer);
129
130	destroyAllTextures();
131	}
132
133
134	/*************************************************************************
135	add's a quad to the list to be rendered
136	*************************************************************************/
137	void OgreCEGUIRenderer::addQuad(const Rect& dest_rect, float z, const Texture* tex, const Rect& texture_rect, const ColourRect& colours, QuadSplitMode quad_split_mode)
138	{
139	// if not queueing, render directly (as in, right now!). This is used for the mouse cursor.
140	if (!d_queueing)
141	{
142	renderQuadDirect(dest_rect, z, tex, texture_rect, colours, quad_split_mode);
143	}
144	else
145	{
146	d_sorted = false;
147	QuadInfo quad;
148
149	// set quad position, flipping y co-ordinates, and applying appropriate texel origin offset
150	quad.position.d_left = dest_rect.d_left;
151	quad.position.d_right = dest_rect.d_right;
152	quad.position.d_top = d_display_area.getHeight() - dest_rect.d_top;
153	quad.position.d_bottom = d_display_area.getHeight() - dest_rect.d_bottom;
154	quad.position.offset(d_texelOffset);
155
156	// convert quad co-ordinates for a -1 to 1 co-ordinate system.
157	quad.position.d_left /= (d_display_area.getWidth() * 0.5f);
158	quad.position.d_right /= (d_display_area.getWidth() * 0.5f);
159	quad.position.d_top /= (d_display_area.getHeight() * 0.5f);
160	quad.position.d_bottom /= (d_display_area.getHeight() * 0.5f);
161	quad.position.offset(Point(-1.0f, -1.0f));
162
163	quad.z = -1 + z;
164	quad.texture = ((OgreCEGUITexture*)tex)->getOgreTexture();
165	quad.texPosition = texture_rect;
166
167	// covert colours for ogre, note that top / bottom are switched.
168	quad.topLeftCol = colourToOgre(colours.d_bottom_left);
169	quad.topRightCol = colourToOgre(colours.d_bottom_right);
170	quad.bottomLeftCol = colourToOgre(colours.d_top_left);
171	quad.bottomRightCol = colourToOgre(colours.d_top_right);
172
173	// set quad split mode
174	quad.splitMode = quad_split_mode;
175
176	d_quadlist.insert(quad);
177	}
178	}
179
180
181
182	/*************************************************************************
183	perform final rendering for all queued renderable quads.
184	*************************************************************************/
185	void OgreCEGUIRenderer::doRender(void)
186	{
187	// Render if overlays enabled and the quad list is not empty
188	if (d_render_sys->_getViewport()->getOverlaysEnabled() && !d_quadlist.empty())
189	{
190	/// Quad list needs to be sorted and thus the vertex buffer rebuilt. If not, we can
191	/// reuse the vertex buffer resulting in a nice speed gain.
192	if(!d_sorted)
193	{
194	sortQuads();
195	/// Resize vertex buffer if it is too small
196	size_t size = d_buffer->getNumVertices();
197	size_t requestedSize = d_quadlist.size()*VERTEX_PER_QUAD;
198	if(size < requestedSize)
199	{
200	/// Double buffer size until smaller than requested size
201	while(size < requestedSize)
202	size = size * 2;
203	/// Reallocate the buffer
204	destroyQuadRenderOp(d_render_op, d_buffer);
205	createQuadRenderOp(d_render_op, d_buffer, size);
206	}
207	else if(requestedSize < size/2 && d_underused_framecount >= UNDERUSED_FRAME_THRESHOLD)
208	{
209	/// Resize vertex buffer if it has been to big for too long
210	size = size / 2;
211	destroyQuadRenderOp(d_render_op, d_buffer);
212	createQuadRenderOp(d_render_op, d_buffer, size);
213	/// Reset underused framecount so it takes another UNDERUSED_FRAME_THRESHOLD to half again
214	d_underused_framecount = 0;
215	}
216	/// Fill the buffer
217	QuadVertex* buffmem;
218	buffmem = (QuadVertex*)d_buffer->lock(Ogre::HardwareVertexBuffer::HBL_DISCARD);
219	// iterate over each quad in the list
220	for (QuadList::iterator i = d_quadlist.begin(); i != d_quadlist.end(); ++i)
221	{
222	const QuadInfo& quad = (*i);
223	// setup Vertex 1...
224	buffmem->x = quad.position.d_left;
225	buffmem->y = quad.position.d_bottom;
226	buffmem->z = quad.z;
227	buffmem->diffuse = quad.topLeftCol;
228	buffmem->tu1 = quad.texPosition.d_left;
229	buffmem->tv1 = quad.texPosition.d_bottom;
230	++buffmem;
231
232	// setup Vertex 2...
233
234	// top-left to bottom-right diagonal
235	if (quad.splitMode == TopLeftToBottomRight)
236	{
237	buffmem->x = quad.position.d_right;
238	buffmem->y = quad.position.d_bottom;
239	buffmem->z = quad.z;
240	buffmem->diffuse = quad.topRightCol;
241	buffmem->tu1 = quad.texPosition.d_right;
242	buffmem->tv1 = quad.texPosition.d_bottom;
243	}
244	// bottom-left to top-right diagonal
245	else
246	{
247	buffmem->x = quad.position.d_right;
248	buffmem->y = quad.position.d_top;
249	buffmem->z = quad.z;
250	buffmem->diffuse = quad.bottomRightCol;
251	buffmem->tu1 = quad.texPosition.d_right;
252	buffmem->tv1 = quad.texPosition.d_top;
253	}
254	++buffmem;
255
256	// setup Vertex 3...
257	buffmem->x = quad.position.d_left;
258	buffmem->y = quad.position.d_top;
259	buffmem->z = quad.z;
260	buffmem->diffuse = quad.bottomLeftCol;
261	buffmem->tu1 = quad.texPosition.d_left;
262	buffmem->tv1 = quad.texPosition.d_top;
263	++buffmem;
264
265	// setup Vertex 4...
266	buffmem->x = quad.position.d_right;
267	buffmem->y = quad.position.d_bottom;
268	buffmem->z = quad.z;
269	buffmem->diffuse = quad.topRightCol;
270	buffmem->tu1 = quad.texPosition.d_right;
271	buffmem->tv1 = quad.texPosition.d_bottom;
272	++buffmem;
273
274	// setup Vertex 5...
275	buffmem->x = quad.position.d_right;
276	buffmem->y = quad.position.d_top;
277	buffmem->z = quad.z;
278	buffmem->diffuse = quad.bottomRightCol;
279	buffmem->tu1 = quad.texPosition.d_right;
280	buffmem->tv1 = quad.texPosition.d_top;
281	++buffmem;
282
283	// setup Vertex 6...
284
285	// top-left to bottom-right diagonal
286	if (quad.splitMode == TopLeftToBottomRight)
287	{
288	buffmem->x = quad.position.d_left;
289	buffmem->y = quad.position.d_top;
290	buffmem->z = quad.z;
291	buffmem->diffuse = quad.bottomLeftCol;
292	buffmem->tu1 = quad.texPosition.d_left;
293	buffmem->tv1 = quad.texPosition.d_top;
294	}
295	// bottom-left to top-right diagonal
296	else
297	{
298	buffmem->x = quad.position.d_left;
299	buffmem->y = quad.position.d_bottom;
300	buffmem->z = quad.z;
301	buffmem->diffuse = quad.topLeftCol;
302	buffmem->tu1 = quad.texPosition.d_left;
303	buffmem->tv1 = quad.texPosition.d_bottom;
304	}
305	++buffmem;
306	}
307
308	// ensure we leave the buffer in the unlocked state
309	d_buffer->unlock();
310	}
311
312	/// Render the buffer
313	d_bufferPos = 0;
314	bool first = true;
315
316	// Iterate over each quad in the list and render it
317	QuadList::iterator i = d_quadlist.begin();
318	while(i != d_quadlist.end())
319	{
320
321	d_currTexture = i->texture;
322	d_render_op.vertexData->vertexStart = d_bufferPos;
323	for (; i != d_quadlist.end(); ++i)
324	{
325	const QuadInfo& quad = (*i);
326	if (d_currTexture != quad.texture)
327	{
328	/// If it has a different texture, render this quad in next operation
329	/// also need to reset render states
330	first = true;
331	break;
332	}
333	d_bufferPos += VERTEX_PER_QUAD;
334	}
335	d_render_op.vertexData->vertexCount = d_bufferPos - d_render_op.vertexData->vertexStart;
336	/// Set texture, and do the render
337	d_render_sys->_setTexture(0, true, d_currTexture);
338	if (first)
339	{
340	initRenderStates();
341	first = false;
342	}
343	d_render_sys->_render(d_render_op);
344	}
345
346	}
347	/// Count frames to check if utilization of vertex buffer was below half the capacity for 500,000 frames
348	if(d_bufferPos < d_buffer->getNumVertices()/2)
349	d_underused_framecount++;
350	else
351	d_underused_framecount = 0;
352	}
353
354
355	/*************************************************************************
356	clear the queue
357	*************************************************************************/
358	void OgreCEGUIRenderer::clearRenderList(void)
359	{
360	d_sorted = true;
361	d_quadlist.clear();
362	}
363
364
365	/*************************************************************************
366	create an empty texture
367	*************************************************************************/
368	Texture* OgreCEGUIRenderer::createTexture(void)
369	{
370	OgreCEGUITexture* tex = new OgreCEGUITexture(this);
371	d_texturelist.push_back(tex);
372	return tex;
373	}
374
375
376	/*************************************************************************
377	create a texture and load it with the specified file.
378	*************************************************************************/
379	Texture* OgreCEGUIRenderer::createTexture(const String& filename, const String& resourceGroup)
380	{
381	OgreCEGUITexture* tex = (OgreCEGUITexture*)createTexture();
382	tex->loadFromFile(filename, resourceGroup);
383
384	return tex;
385	}
386
387
388	/*************************************************************************
389	create a texture and set it to the specified size
390	*************************************************************************/
391	Texture* OgreCEGUIRenderer::createTexture(float size)
392	{
393	OgreCEGUITexture* tex = (OgreCEGUITexture*)createTexture();
394	tex->setOgreTextureSize((uint)size);
395
396	return tex;
397	}
398
399
400	/*************************************************************************
401	destroy the given texture
402	*************************************************************************/
403	void OgreCEGUIRenderer::destroyTexture(Texture* texture)
404	{
405	if (texture != NULL)
406	{
407	OgreCEGUITexture* tex = (OgreCEGUITexture*)texture;
408
409	d_texturelist.remove(tex);
410	delete tex;
411	}
412	}
413
414
415	/*************************************************************************
416	destroy all textures still active
417	*************************************************************************/
418	void OgreCEGUIRenderer::destroyAllTextures(void)
419	{
420	while (!d_texturelist.empty())
421	{
422	destroyTexture(*(d_texturelist.begin()));
423	}
424	}
425
426
427	/*************************************************************************
428	setup states etc
429	*************************************************************************/
430	void OgreCEGUIRenderer::initRenderStates(void)
431	{
432	using namespace Ogre;
433
434	// set-up matrices
435	d_render_sys->_setWorldMatrix(Matrix4::IDENTITY);
436	d_render_sys->_setViewMatrix(Matrix4::IDENTITY);
437	d_render_sys->_setProjectionMatrix(Matrix4::IDENTITY);
438
439	// initialise render settings
440	d_render_sys->setLightingEnabled(false);
441	d_render_sys->_setDepthBufferParams(false, false);
442	d_render_sys->_setDepthBias(0, 0);
443	d_render_sys->_setCullingMode(CULL_NONE);
444	d_render_sys->_setFog(FOG_NONE);
445	d_render_sys->_setColourBufferWriteEnabled(true, true, true, true);
446	d_render_sys->unbindGpuProgram(GPT_FRAGMENT_PROGRAM);
447	d_render_sys->unbindGpuProgram(GPT_VERTEX_PROGRAM);
448	d_render_sys->setShadingType(SO_GOURAUD);
449	d_render_sys->_setPolygonMode(PM_SOLID);
450
451	// initialise texture settings
452	d_render_sys->_setTextureCoordCalculation(0, TEXCALC_NONE);
453	d_render_sys->_setTextureCoordSet(0, 0);
454	d_render_sys->_setTextureUnitFiltering(0, FO_LINEAR, FO_LINEAR, FO_POINT);
455	d_render_sys->_setTextureAddressingMode(0, d_uvwAddressMode);
456	d_render_sys->_setTextureMatrix(0, Matrix4::IDENTITY);
457	#if OGRE_VERSION >= 0x010600
458	d_render_sys->_setAlphaRejectSettings(CMPF_ALWAYS_PASS, 0, false);
459	#else
460	d_render_sys->_setAlphaRejectSettings(CMPF_ALWAYS_PASS, 0);
461	#endif
462	d_render_sys->_setTextureBlendMode(0, d_colourBlendMode);
463	d_render_sys->_setTextureBlendMode(0, d_alphaBlendMode);
464	d_render_sys->_disableTextureUnitsFrom(1);
465
466	// enable alpha blending
467	d_render_sys->_setSceneBlending(SBF_SOURCE_ALPHA, SBF_ONE_MINUS_SOURCE_ALPHA);
468	}
469
470
471
472	/*************************************************************************
473	sort quads list according to texture
474	*************************************************************************/
475	void OgreCEGUIRenderer::sortQuads(void)
476	{
477	if (!d_sorted)
478	{
479	d_sorted = true;
480	}
481
482	}
483
484	/*************************************************************************
485	render a quad directly to the display
486	*************************************************************************/
487	void OgreCEGUIRenderer::renderQuadDirect(const Rect& dest_rect, float z, const Texture* tex, const Rect& texture_rect, const ColourRect& colours, QuadSplitMode quad_split_mode)
488	{
489	if (d_render_sys->_getViewport()->getOverlaysEnabled())
490	{
491	z = -1 + z;
492
493	Rect final_rect;
494
495	// set quad position, flipping y co-ordinates, and applying appropriate texel origin offset
496	final_rect.d_left = dest_rect.d_left;
497	final_rect.d_right = dest_rect.d_right;
498	final_rect.d_top = d_display_area.getHeight() - dest_rect.d_top;
499	final_rect.d_bottom = d_display_area.getHeight() - dest_rect.d_bottom;
500	final_rect.offset(d_texelOffset);
501
502	// convert quad co-ordinates for a -1 to 1 co-ordinate system.
503	final_rect.d_left /= (d_display_area.getWidth() * 0.5f);
504	final_rect.d_right /= (d_display_area.getWidth() * 0.5f);
505	final_rect.d_top /= (d_display_area.getHeight() * 0.5f);
506	final_rect.d_bottom /= (d_display_area.getHeight() * 0.5f);
507	final_rect.offset(Point(-1.0f, -1.0f));
508
509	// convert colours for ogre, note that top / bottom are switched.
510	uint32 topLeftCol = colourToOgre(colours.d_bottom_left);
511	uint32 topRightCol = colourToOgre(colours.d_bottom_right);
512	uint32 bottomLeftCol = colourToOgre(colours.d_top_left);
513	uint32 bottomRightCol= colourToOgre(colours.d_top_right);
514
515	QuadVertex* buffmem = (QuadVertex*)d_direct_buffer->lock(Ogre::HardwareVertexBuffer::HBL_DISCARD);
516
517	// setup Vertex 1...
518	buffmem->x = final_rect.d_left;
519	buffmem->y = final_rect. d_bottom;
520	buffmem->z = z;
521	buffmem->diffuse = topLeftCol;
522	buffmem->tu1 = texture_rect.d_left;
523	buffmem->tv1 = texture_rect.d_bottom;
524	++buffmem;
525
526	// setup Vertex 2...
527
528	// top-left to bottom-right diagonal
529	if (quad_split_mode == TopLeftToBottomRight)
530	{
531	buffmem->x = final_rect.d_right;
532	buffmem->y = final_rect.d_bottom;
533	buffmem->z = z;
534	buffmem->diffuse = topRightCol;
535	buffmem->tu1 = texture_rect.d_right;
536	buffmem->tv1 = texture_rect.d_bottom;
537	++buffmem;
538	}
539	// bottom-left to top-right diagonal
540	else
541	{
542	buffmem->x = final_rect.d_right;
543	buffmem->y = final_rect.d_top;
544	buffmem->z = z;
545	buffmem->diffuse = bottomRightCol;
546	buffmem->tu1 = texture_rect.d_right;
547	buffmem->tv1 = texture_rect.d_top;
548	++buffmem;
549	}
550
551	// setup Vertex 3...
552	buffmem->x = final_rect.d_left;
553	buffmem->y = final_rect.d_top;
554	buffmem->z = z;
555	buffmem->diffuse = bottomLeftCol;
556	buffmem->tu1 = texture_rect.d_left;
557	buffmem->tv1 = texture_rect.d_top;
558	++buffmem;
559
560	// setup Vertex 4...
561	buffmem->x = final_rect.d_right;
562	buffmem->y = final_rect.d_bottom;
563	buffmem->z = z;
564	buffmem->diffuse = topRightCol;
565	buffmem->tu1 = texture_rect.d_right;
566	buffmem->tv1 = texture_rect.d_bottom;
567	++buffmem;
568
569	// setup Vertex 5...
570	buffmem->x = final_rect.d_right;
571	buffmem->y = final_rect.d_top;
572	buffmem->z = z;
573	buffmem->diffuse = bottomRightCol;
574	buffmem->tu1 = texture_rect.d_right;
575	buffmem->tv1 = texture_rect.d_top;
576	++buffmem;
577
578	// setup Vertex 6...
579
580	// top-left to bottom-right diagonal
581	if (quad_split_mode == TopLeftToBottomRight)
582	{
583	buffmem->x = final_rect.d_left;
584	buffmem->y = final_rect.d_top;
585	buffmem->z = z;
586	buffmem->diffuse = bottomLeftCol;
587	buffmem->tu1 = texture_rect.d_left;
588	buffmem->tv1 = texture_rect.d_top;
589	}
590	// bottom-left to top-right diagonal
591	else
592	{
593	buffmem->x = final_rect.d_left;
594	buffmem->y = final_rect.d_bottom;
595	buffmem->z = z;
596	buffmem->diffuse = topLeftCol;
597	buffmem->tu1 = texture_rect.d_left;
598	buffmem->tv1 = texture_rect.d_bottom;
599	}
600
601	d_direct_buffer->unlock();
602
603	//
604	// perform rendering...
605	//
606	d_render_sys->_setTexture(0, true, ((OgreCEGUITexture*)tex)->getOgreTexture()->getName());
607	initRenderStates();
608	d_direct_render_op.vertexData->vertexCount = VERTEX_PER_QUAD;
609	d_render_sys->_render(d_direct_render_op);
610	}
611
612	}
613
614	/*************************************************************************
615	convert ARGB colour value to whatever the Ogre render system is
616	expecting.
617	*************************************************************************/
618	uint32 OgreCEGUIRenderer::colourToOgre(const colour& col) const
619	{
620	Ogre::ColourValue cv(col.getRed(), col.getGreen(), col.getBlue(), col.getAlpha());
621
622	uint32 final;
623	d_render_sys->convertColourValue(cv, &final);
624
625	return final;
626	}
627
628
629	/*************************************************************************
630	Set the scene manager to be used for rendering the GUI.
631	*************************************************************************/
632	void OgreCEGUIRenderer::setTargetSceneManager(Ogre::SceneManager* scene_manager)
633	{
634	// unhook from current scene manager.
635	if (d_sceneMngr != NULL)
636	{
637	d_sceneMngr->removeRenderQueueListener(d_ourlistener);
638	d_sceneMngr = NULL;
639	}
640
641	// hook new scene manager if that is not NULL
642	if (scene_manager != NULL)
643	{
644	d_sceneMngr = scene_manager;
645	d_sceneMngr->addRenderQueueListener(d_ourlistener);
646	}
647
648	}
649
650
651	/*************************************************************************
652	Set the target render queue for GUI rendering.
653	*************************************************************************/
654	void OgreCEGUIRenderer::setTargetRenderQueue(Ogre::uint8 queue_id, bool post_queue)
655	{
656	d_queue_id = queue_id;
657	d_post_queue = post_queue;
658
659	if (d_ourlistener != NULL)
660	{
661	d_ourlistener->setTargetRenderQueue(queue_id);
662	d_ourlistener->setPostRenderQueue(post_queue);
663	}
664
665	}
666
667
668	/*************************************************************************
669	perform main work of the constructor
670	*************************************************************************/
671	void OgreCEGUIRenderer::constructor_impl(Ogre::RenderWindow* window, Ogre::uint8 queue_id, bool post_queue, uint max_quads)
672	{
673	using namespace Ogre;
674
675	// initialise the renderer fields
676	d_queueing = true;
677	d_queue_id = queue_id;
678	d_currTexture.isNull();
679	d_post_queue = post_queue;
680	d_sceneMngr = NULL;
681	d_bufferPos = 0;
682	d_sorted = true;
683	d_ogre_root = Root::getSingletonPtr();
684	d_render_sys = d_ogre_root->getRenderSystem();
685	// set ID string
686	d_identifierString = "CEGUI::OgreRenderer - Official Ogre based renderer module for CEGUI";
687
688	// Create and initialise the Ogre specific parts required for use in rendering later.
689	// Main GUI
690	createQuadRenderOp(d_render_op, d_buffer, VERTEXBUFFER_INITIAL_CAPACITY);
691	d_underused_framecount = 0;
692
693	// Mouse cursor
694	createQuadRenderOp(d_direct_render_op, d_direct_buffer, VERTEX_PER_QUAD);
695
696	// Discover display settings and setup d_display_area
697	d_display_area.d_left = 0;
698	d_display_area.d_top = 0;
699	d_display_area.d_right = window->getWidth();
700	d_display_area.d_bottom = window->getHeight();
701
702	// initialise required texel offset
703	d_texelOffset = Point((float)d_render_sys->getHorizontalTexelOffset(), -(float)d_render_sys->getVerticalTexelOffset());
704
705	// create listener which will handler the rendering side of things for us.
706	d_ourlistener = new CEGUIRQListener(this, queue_id, post_queue);
707
708	// Initialise blending modes to be used.
709	d_colourBlendMode.blendType = Ogre::LBT_COLOUR;
710	d_colourBlendMode.source1 = Ogre::LBS_TEXTURE;
711	d_colourBlendMode.source2 = Ogre::LBS_DIFFUSE;
712	d_colourBlendMode.operation = Ogre::LBX_MODULATE;
713
714	d_alphaBlendMode.blendType = Ogre::LBT_ALPHA;
715	d_alphaBlendMode.source1 = Ogre::LBS_TEXTURE;
716	d_alphaBlendMode.source2 = Ogre::LBS_DIFFUSE;
717	d_alphaBlendMode.operation = Ogre::LBX_MODULATE;
718
719	d_uvwAddressMode.u = Ogre::TextureUnitState::TAM_CLAMP;
720	d_uvwAddressMode.v = Ogre::TextureUnitState::TAM_CLAMP;
721	d_uvwAddressMode.w = Ogre::TextureUnitState::TAM_CLAMP;
722	}
723
724
725	/*************************************************************************
726	Create a texture from an existing Ogre::TexturePtr object
727	*************************************************************************/
728	Texture* OgreCEGUIRenderer::createTexture(Ogre::TexturePtr& texture)
729	{
730	OgreCEGUITexture* t = (OgreCEGUITexture*)createTexture();
731
732	if (!texture.isNull())
733	{
734	t->setOgreTexture(texture);
735	}
736
737	return t;
738
739	}
740
741	/*************************************************************************
742	Create a resource provider object
743	*************************************************************************/
744	ResourceProvider* OgreCEGUIRenderer::createResourceProvider(void)
745	{
746	d_resourceProvider = new OgreCEGUIResourceProvider();
747	return d_resourceProvider;
748	}
749
750	/*************************************************************************
751	Set the size of the display in pixels.
752	*************************************************************************/
753	void OgreCEGUIRenderer::setDisplaySize(const Size& sz)
754	{
755	if (d_display_area.getSize() != sz)
756	{
757	d_display_area.setSize(sz);
758
759	EventArgs args;
760	fireEvent(EventDisplaySizeChanged, args, EventNamespace);
761	}
762
763	}
764
765	/*************************************************************************
766	Callback from Ogre invoked before other stuff in our target queue
767	is rendered
768	*************************************************************************/
769	void CEGUIRQListener::renderQueueStarted(Ogre::uint8 id, const Ogre::String& invocation,
770	bool& skipThisQueue)
771	{
772	if ((!d_post_queue) && (d_queue_id == id))
773	{
774	CEGUI::System::getSingleton().renderGUI();
775	}
776
777	}
778
779
780	/*************************************************************************
781	Callback from Ogre invoked after other stuff in our target queue
782	is rendered
783	*************************************************************************/
784	void CEGUIRQListener::renderQueueEnded(Ogre::uint8 id, const Ogre::String& invocation, bool& repeatThisQueue)
785	{
786	if ((d_post_queue) && (d_queue_id == id))
787	{
788	CEGUI::System::getSingleton().renderGUI();
789	}
790
791	}
792
793	} // End of CEGUI namespace section

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