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comparison engine/core/video/opengl/renderbackendopengl.cpp @ 669:46258f467c8c

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* Fixed the clear screen problems. The screen is now automatically cleared every frame by the engine if there are no maps loaded. In the process I removed the setClearBackBuffer() function from the RenderBackend.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 08 Nov 2010 21:36:38 +0000
parents e3140f01749d
children
comparison
equal deleted inserted replaced
668:e8a799239384 669:46258f467c8c
45 SDL_Surface* testsurface = SDL_CreateRGBSurface(SDL_SWSURFACE | SDL_SRCALPHA, 1, 1, 32, 45 SDL_Surface* testsurface = SDL_CreateRGBSurface(SDL_SWSURFACE | SDL_SRCALPHA, 1, 1, 32,
46 RMASK, GMASK, BMASK ,AMASK); 46 RMASK, GMASK, BMASK ,AMASK);
47 47
48 m_rgba_format = *(testsurface->format); 48 m_rgba_format = *(testsurface->format);
49 SDL_FreeSurface(testsurface); 49 SDL_FreeSurface(testsurface);
50 m_clear = false;
51 m_lightmodel = 0; 50 m_lightmodel = 0;
52 m_light_enabled = false; 51 m_light_enabled = false;
53 m_stencil_enabled = false; 52 m_stencil_enabled = false;
54 m_alpha_enabled = false; 53 m_alpha_enabled = false;
55 m_sten_ref = 0; 54 m_sten_ref = 0;
160 return m_screen; 159 return m_screen;
161 } 160 }
162 161
163 162
164 void RenderBackendOpenGL::startFrame() { 163 void RenderBackendOpenGL::startFrame() {
165 if(m_clear) {
166 clearBackBuffer();
167 }
168 } 164 }
169 165
170 void RenderBackendOpenGL::endFrame() { 166 void RenderBackendOpenGL::endFrame() {
171 SDL_GL_SwapBuffers(); 167 SDL_GL_SwapBuffers();
172 } 168 }
348 344
349 void RenderBackendOpenGL::changeBlending(int src, int dst) { 345 void RenderBackendOpenGL::changeBlending(int src, int dst) {
350 GLenum src_fact; 346 GLenum src_fact;
351 GLenum dst_fact; 347 GLenum dst_fact;
352 348
353 switch(src) { 349 switch(src) {
354 case 0 : src_fact = GL_ZERO; break; 350 case 0 : src_fact = GL_ZERO; break;
355 case 1 : src_fact = GL_ONE; break; 351 case 1 : src_fact = GL_ONE; break;
356 case 2 : src_fact = GL_DST_COLOR; break; 352 case 2 : src_fact = GL_DST_COLOR; break;
357 case 3 : src_fact = GL_ONE_MINUS_DST_COLOR; break; 353 case 3 : src_fact = GL_ONE_MINUS_DST_COLOR; break;
358 case 4 : src_fact = GL_SRC_ALPHA; break; 354 case 4 : src_fact = GL_SRC_ALPHA; break;
361 case 7 : src_fact = GL_ONE_MINUS_DST_ALPHA; break; 357 case 7 : src_fact = GL_ONE_MINUS_DST_ALPHA; break;
362 358
363 default : src_fact = GL_DST_COLOR; break; 359 default : src_fact = GL_DST_COLOR; break;
364 } 360 }
365 361
366 switch(dst) { 362 switch(dst) {
367 case 0 : dst_fact = GL_ZERO; break; 363 case 0 : dst_fact = GL_ZERO; break;
368 case 1 : dst_fact = GL_ONE; break; 364 case 1 : dst_fact = GL_ONE; break;
369 case 2 : dst_fact = GL_SRC_COLOR; break; 365 case 2 : dst_fact = GL_SRC_COLOR; break;
370 case 3 : dst_fact = GL_ONE_MINUS_SRC_COLOR; break; 366 case 3 : dst_fact = GL_ONE_MINUS_SRC_COLOR; break;
371 case 4 : dst_fact = GL_SRC_ALPHA; break; 367 case 4 : dst_fact = GL_SRC_ALPHA; break;
478 } else { 474 } else {
479 glColor4ub(0, 0, 0, 255); 475 glColor4ub(0, 0, 0, 255);
480 } 476 }
481 for(float angle=0; angle<=Mathf::twoPi(); angle+=(Mathf::twoPi()/subdivisions)){ 477 for(float angle=0; angle<=Mathf::twoPi(); angle+=(Mathf::twoPi()/subdivisions)){
482 glVertex2f( radius*Mathf::Cos(angle)*xstretch + p.x, 478 glVertex2f( radius*Mathf::Cos(angle)*xstretch + p.x,
483 radius*Mathf::Sin(angle)*ystretch + p.y); 479 radius*Mathf::Sin(angle)*ystretch + p.y);
484 } 480 }
485 glVertex2f(p.x+radius*xstretch, p.y); 481 glVertex2f(p.x+radius*xstretch, p.y);
486 glEnd(); 482 glEnd();
487 } 483 }
488 } 484 }