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1 /* | |
2 * $Id$ | |
3 * ***** BEGIN GPL LICENSE BLOCK ***** | |
4 * | |
5 * This program is free software; you can redistribute it and/or | |
6 * modify it under the terms of the GNU General Public License | |
7 * as published by the Free Software Foundation; either version 2 | |
8 * of the License, or (at your option) any later version. | |
9 * | |
10 * This program is distributed in the hope that it will be useful, | |
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 * GNU General Public License for more details. | |
14 * | |
15 * You should have received a copy of the GNU General Public License | |
16 * along with this program; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
18 * | |
19 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. | |
20 * All rights reserved. | |
21 * | |
22 * The Original Code is: all of this file. | |
23 * | |
24 * Contributor(s): none yet. | |
25 * | |
26 * ***** END GPL LICENSE BLOCK ***** | |
27 */ | |
28 | |
29 /** \file gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_VAOpenGLRasterizer.cpp | |
30 * \ingroup bgerastogl | |
31 */ | |
32 | |
33 #include "RAS_VAOpenGLRasterizer.h" | |
34 #include <stdlib.h> | |
35 | |
36 #include "GL/glew.h" | |
37 #include "GPU_extensions.h" | |
38 | |
39 #include "STR_String.h" | |
40 #include "RAS_TexVert.h" | |
41 #include "MT_CmMatrix4x4.h" | |
42 #include "RAS_IRenderTools.h" // rendering text | |
43 ········ | |
44 RAS_VAOpenGLRasterizer::RAS_VAOpenGLRasterizer(RAS_ICanvas* canvas, bool lock) | |
45 : RAS_OpenGLRasterizer(canvas), | |
46 m_Lock(lock && GLEW_EXT_compiled_vertex_array), | |
47 m_last_texco_num(0), | |
48 m_last_attrib_num(0) | |
49 { | |
50 } | |
51 | |
52 RAS_VAOpenGLRasterizer::~RAS_VAOpenGLRasterizer() | |
53 { | |
54 } | |
55 | |
56 bool RAS_VAOpenGLRasterizer::Init(void) | |
57 { | |
58 ········ | |
59 bool result = RAS_OpenGLRasterizer::Init(); | |
60 ········ | |
61 if (result) | |
62 { | |
63 glEnableClientState(GL_VERTEX_ARRAY); | |
64 glEnableClientState(GL_NORMAL_ARRAY); | |
65 glDisableClientState(GL_COLOR_ARRAY); | |
66 glDisableClientState(GL_TEXTURE_COORD_ARRAY); | |
67 | |
68 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | |
69 } | |
70 | |
71 return result; | |
72 } | |
73 | |
74 void RAS_VAOpenGLRasterizer::SetDrawingMode(int drawingmode) | |
75 { | |
76 m_drawingmode = drawingmode; | |
77 | |
78 switch (m_drawingmode) | |
79 { | |
80 case KX_BOUNDINGBOX: | |
81 case KX_WIREFRAME: | |
82 //glDisableClientState(GL_COLOR_ARRAY); | |
83 //glDisable(GL_CULL_FACE); | |
84 break; | |
85 case KX_SOLID: | |
86 //glDisableClientState(GL_COLOR_ARRAY); | |
87 break; | |
88 case KX_TEXTURED: | |
89 case KX_SHADED: | |
90 case KX_SHADOW: | |
91 //glEnableClientState(GL_COLOR_ARRAY); | |
92 default: | |
93 break; | |
94 } | |
95 } | |
96 | |
97 void RAS_VAOpenGLRasterizer::Exit() | |
98 { | |
99 glDisableClientState(GL_VERTEX_ARRAY); | |
100 glDisableClientState(GL_NORMAL_ARRAY); | |
101 glDisableClientState(GL_TEXTURE_COORD_ARRAY); | |
102 glDisableClientState(GL_COLOR_ARRAY); | |
103 | |
104 RAS_OpenGLRasterizer::Exit(); | |
105 } | |
106 | |
107 void RAS_VAOpenGLRasterizer::IndexPrimitives(RAS_MeshSlot& ms) | |
108 { | |
109 static const GLsizei stride = sizeof(RAS_TexVert); | |
110 bool wireframe = m_drawingmode <= KX_WIREFRAME; | |
111 RAS_MeshSlot::iterator it; | |
112 GLenum drawmode; | |
113 | |
114 if (ms.m_pDerivedMesh) { | |
115 // cannot be handled here, pass to RAS_OpenGLRasterizer | |
116 RAS_OpenGLRasterizer::IndexPrimitivesInternal(ms, false); | |
117 return; | |
118 } | |
119 | |
120 if(!wireframe) | |
121 glEnableClientState(GL_TEXTURE_COORD_ARRAY); | |
122 | |
123 // use glDrawElements to draw each vertexarray | |
124 for(ms.begin(it); !ms.end(it); ms.next(it)) { | |
125 if(it.totindex == 0) | |
126 continue; | |
127 | |
128 // drawing mode | |
129 if(it.array->m_type == RAS_DisplayArray::TRIANGLE) | |
130 drawmode = GL_TRIANGLES; | |
131 else if(it.array->m_type == RAS_DisplayArray::QUAD) | |
132 drawmode = GL_QUADS; | |
133 else | |
134 drawmode = GL_LINES; | |
135 | |
136 // colors | |
137 if (drawmode != GL_LINES && !wireframe) { | |
138 if (ms.m_bObjectColor) { | |
139 const MT_Vector4& rgba = ms.m_RGBAcolor; | |
140 | |
141 glDisableClientState(GL_COLOR_ARRAY); | |
142 glColor4d(rgba[0], rgba[1], rgba[2], rgba[3]); | |
143 } | |
144 else { | |
145 glColor4f(0.0f, 0.0f, 0.0f, 1.0f); | |
146 glEnableClientState(GL_COLOR_ARRAY); | |
147 } | |
148 } | |
149 else | |
150 glColor4f(0.0f, 0.0f, 0.0f, 1.0f); | |
151 | |
152 glVertexPointer(3, GL_FLOAT, stride, it.vertex->getXYZ()); | |
153 glNormalPointer(GL_FLOAT, stride, it.vertex->getNormal()); | |
154 if(!wireframe) { | |
155 glTexCoordPointer(2, GL_FLOAT, stride, it.vertex->getUV1
()); | |
156 if(glIsEnabled(GL_COLOR_ARRAY)) | |
157 glColorPointer(4, GL_UNSIGNED_BYTE, stride, it.v
ertex->getRGBA()); | |
158 } | |
159 | |
160 // here the actual drawing takes places | |
161 glDrawElements(drawmode, it.totindex, GL_UNSIGNED_SHORT, it.inde
x); | |
162 } | |
163 | |
164 if(!wireframe) { | |
165 glDisableClientState(GL_TEXTURE_COORD_ARRAY); | |
166 glDisableClientState(GL_COLOR_ARRAY); | |
167 } | |
168 } | |
169 | |
170 void RAS_VAOpenGLRasterizer::IndexPrimitivesMulti(RAS_MeshSlot& ms) | |
171 { | |
172 static const GLsizei stride = sizeof(RAS_TexVert); | |
173 bool wireframe = m_drawingmode <= KX_WIREFRAME; | |
174 RAS_MeshSlot::iterator it; | |
175 GLenum drawmode; | |
176 | |
177 if (ms.m_pDerivedMesh) { | |
178 // cannot be handled here, pass to RAS_OpenGLRasterizer | |
179 RAS_OpenGLRasterizer::IndexPrimitivesInternal(ms, true); | |
180 return; | |
181 } | |
182 | |
183 if(!wireframe) | |
184 EnableTextures(true); | |
185 | |
186 // use glDrawElements to draw each vertexarray | |
187 for(ms.begin(it); !ms.end(it); ms.next(it)) { | |
188 if(it.totindex == 0) | |
189 continue; | |
190 | |
191 // drawing mode | |
192 if(it.array->m_type == RAS_DisplayArray::TRIANGLE) | |
193 drawmode = GL_TRIANGLES; | |
194 else if(it.array->m_type == RAS_DisplayArray::QUAD) | |
195 drawmode = GL_QUADS; | |
196 else | |
197 drawmode = GL_LINES; | |
198 | |
199 // colors | |
200 if (drawmode != GL_LINES && !wireframe) { | |
201 if (ms.m_bObjectColor) { | |
202 const MT_Vector4& rgba = ms.m_RGBAcolor; | |
203 | |
204 glDisableClientState(GL_COLOR_ARRAY); | |
205 glColor4d(rgba[0], rgba[1], rgba[2], rgba[3]); | |
206 } | |
207 else { | |
208 glColor4f(0.0f, 0.0f, 0.0f, 1.0f); | |
209 glEnableClientState(GL_COLOR_ARRAY); | |
210 } | |
211 } | |
212 else | |
213 glColor4f(0.0f, 0.0f, 0.0f, 1.0f); | |
214 | |
215 glVertexPointer(3, GL_FLOAT, stride, it.vertex->getXYZ()); | |
216 glNormalPointer(GL_FLOAT, stride, it.vertex->getNormal()); | |
217 if(!wireframe) { | |
218 TexCoordPtr(it.vertex); | |
219 if(glIsEnabled(GL_COLOR_ARRAY)) | |
220 glColorPointer(4, GL_UNSIGNED_BYTE, stride, it.v
ertex->getRGBA()); | |
221 } | |
222 | |
223 // here the actual drawing takes places | |
224 glDrawElements(drawmode, it.totindex, GL_UNSIGNED_SHORT, it.inde
x); | |
225 } | |
226 | |
227 if(!wireframe) { | |
228 glDisableClientState(GL_COLOR_ARRAY); | |
229 EnableTextures(false); | |
230 } | |
231 } | |
232 | |
233 void RAS_VAOpenGLRasterizer::TexCoordPtr(const RAS_TexVert *tv) | |
234 { | |
235 /* note: this function must closely match EnableTextures to enable/disab
le | |
236 * the right arrays, otherwise coordinate and attribute pointers from ot
her | |
237 * materials can still be used and cause crashes */ | |
238 int unit; | |
239 | |
240 if(GLEW_ARB_multitexture) | |
241 { | |
242 for(unit=0; unit<m_texco_num; unit++) | |
243 { | |
244 glClientActiveTextureARB(GL_TEXTURE0_ARB+unit); | |
245 if(tv->getFlag() & RAS_TexVert::SECOND_UV && (int)tv->ge
tUnit() == unit) { | |
246 glEnableClientState(GL_TEXTURE_COORD_ARRAY); | |
247 glTexCoordPointer(2, GL_FLOAT, sizeof(RAS_TexVer
t), tv->getUV2()); | |
248 continue; | |
249 } | |
250 switch(m_texco[unit]) | |
251 { | |
252 case RAS_TEXCO_ORCO: | |
253 case RAS_TEXCO_GLOB: | |
254 glTexCoordPointer(3, GL_FLOAT, sizeof(RAS_TexVer
t),tv->getXYZ()); | |
255 break; | |
256 case RAS_TEXCO_UV1: | |
257 glTexCoordPointer(2, GL_FLOAT, sizeof(RAS_TexVer
t),tv->getUV1()); | |
258 break; | |
259 case RAS_TEXCO_NORM: | |
260 glTexCoordPointer(3, GL_FLOAT, sizeof(RAS_TexVer
t),tv->getNormal()); | |
261 break; | |
262 case RAS_TEXTANGENT: | |
263 glTexCoordPointer(4, GL_FLOAT, sizeof(RAS_TexVer
t),tv->getTangent()); | |
264 break; | |
265 case RAS_TEXCO_UV2: | |
266 glTexCoordPointer(2, GL_FLOAT, sizeof(RAS_TexVer
t),tv->getUV2()); | |
267 break; | |
268 default: | |
269 break; | |
270 } | |
271 } | |
272 | |
273 glClientActiveTextureARB(GL_TEXTURE0_ARB); | |
274 } | |
275 | |
276 if(GLEW_ARB_vertex_program) { | |
277 for(unit=0; unit<m_attrib_num; unit++) { | |
278 switch(m_attrib[unit]) { | |
279 case RAS_TEXCO_ORCO: | |
280 case RAS_TEXCO_GLOB: | |
281 glVertexAttribPointerARB(unit, 3, GL_FLOAT, GL_F
ALSE, sizeof(RAS_TexVert), tv->getXYZ()); | |
282 break; | |
283 case RAS_TEXCO_UV1: | |
284 glVertexAttribPointerARB(unit, 2, GL_FLOAT, GL_F
ALSE, sizeof(RAS_TexVert), tv->getUV1()); | |
285 break; | |
286 case RAS_TEXCO_NORM: | |
287 glVertexAttribPointerARB(unit, 3, GL_FLOAT, GL_F
ALSE, sizeof(RAS_TexVert), tv->getNormal()); | |
288 break; | |
289 case RAS_TEXTANGENT: | |
290 glVertexAttribPointerARB(unit, 4, GL_FLOAT, GL_F
ALSE, sizeof(RAS_TexVert), tv->getTangent()); | |
291 break; | |
292 case RAS_TEXCO_UV2: | |
293 glVertexAttribPointerARB(unit, 2, GL_FLOAT, GL_F
ALSE, sizeof(RAS_TexVert), tv->getUV2()); | |
294 break; | |
295 case RAS_TEXCO_VCOL: | |
296 glVertexAttribPointerARB(unit, 4, GL_UNSIGNED_BY
TE, GL_FALSE, sizeof(RAS_TexVert), tv->getRGBA()); | |
297 break; | |
298 default: | |
299 break; | |
300 } | |
301 } | |
302 } | |
303 } | |
304 | |
305 void RAS_VAOpenGLRasterizer::EnableTextures(bool enable) | |
306 { | |
307 TexCoGen *texco, *attrib; | |
308 int unit, texco_num, attrib_num; | |
309 | |
310 /* we cache last texcoords and attribs to ensure we disable the ones tha
t | |
311 * were actually last set */ | |
312 if(enable) { | |
313 texco = m_texco; | |
314 texco_num = m_texco_num; | |
315 attrib = m_attrib; | |
316 attrib_num = m_attrib_num; | |
317 ················ | |
318 memcpy(m_last_texco, m_texco, sizeof(TexCoGen)*m_texco_num); | |
319 m_last_texco_num = m_texco_num; | |
320 memcpy(m_last_attrib, m_attrib, sizeof(TexCoGen)*m_attrib_num); | |
321 m_last_attrib_num = m_attrib_num; | |
322 } | |
323 else { | |
324 texco = m_last_texco; | |
325 texco_num = m_last_texco_num; | |
326 attrib = m_last_attrib; | |
327 attrib_num = m_last_attrib_num; | |
328 } | |
329 | |
330 if(GLEW_ARB_multitexture) { | |
331 for(unit=0; unit<texco_num; unit++) { | |
332 glClientActiveTextureARB(GL_TEXTURE0_ARB+unit); | |
333 | |
334 switch(texco[unit]) | |
335 { | |
336 case RAS_TEXCO_ORCO: | |
337 case RAS_TEXCO_GLOB: | |
338 case RAS_TEXCO_UV1: | |
339 case RAS_TEXCO_NORM: | |
340 case RAS_TEXTANGENT: | |
341 case RAS_TEXCO_UV2: | |
342 if(enable) glEnableClientState(GL_TEXTURE_COORD_
ARRAY); | |
343 else glDisableClientState(GL_TEXTURE_COORD_ARRAY
); | |
344 break; | |
345 default: | |
346 glDisableClientState(GL_TEXTURE_COORD_ARRAY); | |
347 break; | |
348 } | |
349 } | |
350 | |
351 glClientActiveTextureARB(GL_TEXTURE0_ARB); | |
352 } | |
353 else { | |
354 if(texco_num) { | |
355 if(enable) glEnableClientState(GL_TEXTURE_COORD_ARRAY); | |
356 else glDisableClientState(GL_TEXTURE_COORD_ARRAY); | |
357 } | |
358 } | |
359 | |
360 if(GLEW_ARB_vertex_program) { | |
361 for(unit=0; unit<attrib_num; unit++) { | |
362 switch(attrib[unit]) { | |
363 case RAS_TEXCO_ORCO: | |
364 case RAS_TEXCO_GLOB: | |
365 case RAS_TEXCO_UV1: | |
366 case RAS_TEXCO_NORM: | |
367 case RAS_TEXTANGENT: | |
368 case RAS_TEXCO_UV2: | |
369 case RAS_TEXCO_VCOL: | |
370 if(enable) glEnableVertexAttribArrayARB(unit); | |
371 else glDisableVertexAttribArrayARB(unit); | |
372 break; | |
373 default: | |
374 glDisableVertexAttribArrayARB(unit); | |
375 break; | |
376 } | |
377 } | |
378 } | |
379 | |
380 if(!enable) { | |
381 m_last_texco_num = 0; | |
382 m_last_attrib_num = 0; | |
383 } | |
384 } | |
385 | |
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