173 // GLenum type = TYPE;
174 // const GLvoid *pixels = NULL;
175 // glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
176 //
177 // glDisable(TARGET);
178 // }
179
180 self->_width = width;
181 self->_height = height;
182 }
183
184 - (id)init
185 {
186 self = [super init];
187 if (self != nil)
188 {
189 self->_width = 0;
190 self->_height = 0;
191 self->_texture = 0;
192 self->_fbo = 0;
193
194 [self _assertContext];
195 if ([self _supportsFbo] == NO)
196 {
197 [super dealloc];
198 self = nil;
199 }
200 }
201 return self;
202 }
203
204 - (void)dealloc
205 {
206 [self _assertContext];
207 {
208 [self _destroyFbo];
209 }
210
211 [super dealloc];
212 }
213
214 - (GLuint)width
215 {
216 return self->_width;
217 }
218
219 - (GLuint)height
220 {
221 return self->_height;
222 }
223
224 - (void)bindForWidth:(GLuint)width andHeight:(GLuint)height
225 {
226 LOG(" GlassFrameBufferObject bindForWidth:%d andHeight:%d", width, height);
227 LOG(" context:%p", CGLGetCurrentContext());
228 [self _assertContext];
229 {
230 if ((width > 0) && (height > 0))
231 {
232 [self _createFboIfNeededForWidth:width andHeight:height];
233 }
234 }
235 LOG(" BOUND");
236 LOG(" glGetError(): %d", glGetError());
237 }
238
239 - (void)blitForWidth:(GLuint)width andHeight:(GLuint)height
240 {
241 LOG(" GlassFrameBufferObject blitForWidth:%d andHeight:%d [%p]", width, height, self);
242 if (self->_texture != 0)
243 {
244 glMatrixMode(GL_PROJECTION);
245 glLoadIdentity();
246 glOrtho(0.0f, width, height, 0.0f, -1.0f, 1.0f);
247
248 glMatrixMode(GL_MODELVIEW);
249 glLoadIdentity();
250
251 glEnable(TARGET);
252 {
253 glActiveTextureARB(GL_TEXTURE0);
254 glBindTexture(TARGET, self->_texture);
255 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
256 {
257 glBegin(GL_QUADS);
258 {
277 glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, (GLint*)&self->_fboToRestore);
278 [self _createFboIfNeededForWidth:other_fbo->_width andHeight:other_fbo->_height];
279 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, self->_fbo);
280 glBindFramebuffer(GL_READ_FRAMEBUFFER, other_fbo->_fbo);
281 glBlitFramebuffer(0,0, other_fbo->_width, other_fbo->_height,
282 0,0, self->_width, self->_height, GL_COLOR_BUFFER_BIT, GL_LINEAR);
283 glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, self->_fboToRestore);
284 }
285
286
287 - (GLuint)texture
288 {
289 return self->_texture;
290 }
291
292 - (GLuint)fbo
293 {
294 return self->_fbo;
295 }
296
297 @end
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173 // GLenum type = TYPE;
174 // const GLvoid *pixels = NULL;
175 // glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
176 //
177 // glDisable(TARGET);
178 // }
179
180 self->_width = width;
181 self->_height = height;
182 }
183
184 - (id)init
185 {
186 self = [super init];
187 if (self != nil)
188 {
189 self->_width = 0;
190 self->_height = 0;
191 self->_texture = 0;
192 self->_fbo = 0;
193 self->_isSwPipe = NO;
194
195 [self _assertContext];
196 if ([self _supportsFbo] == NO)
197 {
198 [super dealloc];
199 self = nil;
200 }
201 }
202 return self;
203 }
204
205 - (void)dealloc
206 {
207 [self _assertContext];
208 {
209 [self _destroyFbo];
210 }
211
212 [super dealloc];
213 }
214
215 - (GLuint)width
216 {
217 return self->_width;
218 }
219
220 - (GLuint)height
221 {
222 return self->_height;
223 }
224
225 - (void)bindForWidth:(GLuint)width andHeight:(GLuint)height
226 {
227 LOG(" GlassFrameBufferObject bindForWidth:%d andHeight:%d", width, height);
228 LOG(" context:%p", CGLGetCurrentContext());
229 [self _assertContext];
230 {
231 if ((width > 0) && (height > 0))
232 {
233 if(self->_isSwPipe)
234 {
235 self->_fboToRestore = 0; // default to screen
236 glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, (GLint*)&self->_fboToRestore);
237 LOG(" will need to restore to FBO: %d", self->_fboToRestore);
238 }
239
240 [self _createFboIfNeededForWidth:width andHeight:height];
241
242 if (self->_isSwPipe && (self->_fbo != 0))
243 {
244 GLuint framebufferToBind = self->_fbo; // our own FBO
245 glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebufferToBind);
246 LOG(" bounded to FBO: %d", self->_fbo);
247 }
248 }
249 }
250 LOG(" BOUND");
251 LOG(" glGetError(): %d", glGetError());
252 }
253
254 - (void)unbind
255 {
256 if (self->_isSwPipe)
257 {
258 LOG(" GlassFrameBufferObject unbind");
259 [self _assertContext];
260 {
261 GLint framebufferCurrent = 0;
262 glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &framebufferCurrent);
263
264 if ((GLuint)framebufferCurrent != self->_fbo)
265 {
266 fprintf(stderr, "ERROR: unexpected fbo is bound! Expected %d, but found %d\n", self->_fbo, framebufferCurrent);
267 }
268
269 if (![GlassApplication syncRenderingDisabled]) {
270 glFinish();
271 }
272 GLuint framebufferToRevertTo = self->_fboToRestore;
273 glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebufferToRevertTo);
274 LOG(" restored to FBO: %d", framebufferToRevertTo);
275 LOG(" glGetError(): %d", glGetError());
276 }
277 }
278 }
279
280 - (void)blitForWidth:(GLuint)width andHeight:(GLuint)height
281 {
282 LOG(" GlassFrameBufferObject blitForWidth:%d andHeight:%d [%p]", width, height, self);
283 if (self->_texture != 0)
284 {
285 glMatrixMode(GL_PROJECTION);
286 glLoadIdentity();
287 glOrtho(0.0f, width, height, 0.0f, -1.0f, 1.0f);
288
289 glMatrixMode(GL_MODELVIEW);
290 glLoadIdentity();
291
292 glEnable(TARGET);
293 {
294 glActiveTextureARB(GL_TEXTURE0);
295 glBindTexture(TARGET, self->_texture);
296 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
297 {
298 glBegin(GL_QUADS);
299 {
318 glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, (GLint*)&self->_fboToRestore);
319 [self _createFboIfNeededForWidth:other_fbo->_width andHeight:other_fbo->_height];
320 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, self->_fbo);
321 glBindFramebuffer(GL_READ_FRAMEBUFFER, other_fbo->_fbo);
322 glBlitFramebuffer(0,0, other_fbo->_width, other_fbo->_height,
323 0,0, self->_width, self->_height, GL_COLOR_BUFFER_BIT, GL_LINEAR);
324 glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, self->_fboToRestore);
325 }
326
327
328 - (GLuint)texture
329 {
330 return self->_texture;
331 }
332
333 - (GLuint)fbo
334 {
335 return self->_fbo;
336 }
337
338 - (void)setIsSwPipe:(BOOL)isSwPipe
339 {
340 self->_isSwPipe = isSwPipe;
341 }
342
343 @end
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