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comparison src/video/SDL_renderer_gl.c @ 2832:0379769e8caa

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The matrices have already been set, so you don't have to re-set them. You always need to reset the viewport when activating the renderer in case the context had been set to a different window previously.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 05 Dec 2008 06:22:19 +0000
parents 49243a6e9ff1
children c2e182a37f5f
comparison
equal deleted inserted replaced
2831:7173fc5c7ef6 2832:0379769e8caa
119 }; 119 };
120 120
121 typedef struct 121 typedef struct
122 { 122 {
123 SDL_GLContext context; 123 SDL_GLContext context;
124 SDL_bool updateSize;
125 SDL_bool GL_ARB_texture_rectangle_supported; 124 SDL_bool GL_ARB_texture_rectangle_supported;
126 SDL_bool GL_EXT_paletted_texture_supported; 125 SDL_bool GL_EXT_paletted_texture_supported;
127 int blendMode; 126 int blendMode;
128 int scaleMode; 127 int scaleMode;
129 128
356 if (data->GL_ARB_texture_rectangle_supported) { 355 if (data->GL_ARB_texture_rectangle_supported) {
357 data->glEnable(GL_TEXTURE_RECTANGLE_ARB); 356 data->glEnable(GL_TEXTURE_RECTANGLE_ARB);
358 } else { 357 } else {
359 data->glEnable(GL_TEXTURE_2D); 358 data->glEnable(GL_TEXTURE_2D);
360 } 359 }
361 data->updateSize = SDL_TRUE; 360 data->glMatrixMode(GL_PROJECTION);
361 data->glLoadIdentity();
362 data->glMatrixMode(GL_MODELVIEW);
363 data->glLoadIdentity();
362 364
363 return renderer; 365 return renderer;
364 } 366 }
365 367
366 static int 368 static int
370 SDL_Window *window = SDL_GetWindowFromID(renderer->window); 372 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
371 373
372 if (SDL_GL_MakeCurrent(window->id, data->context) < 0) { 374 if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
373 return -1; 375 return -1;
374 } 376 }
375 if (data->updateSize) { 377 data->glViewport(0, 0, window->w, window->h);
376 data->glMatrixMode(GL_PROJECTION); 378 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0, 0.0,
377 data->glLoadIdentity(); 379 1.0);
378 data->glMatrixMode(GL_MODELVIEW);
379 data->glLoadIdentity();
380 data->glViewport(0, 0, window->w, window->h);
381 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0,
382 0.0, 1.0);
383 data->updateSize = SDL_FALSE;
384 }
385 return 0; 380 return 0;
386 } 381 }
387 382
388 static int 383 static int
389 GL_DisplayModeChanged(SDL_Renderer * renderer) 384 GL_DisplayModeChanged(SDL_Renderer * renderer)
390 { 385 {
391 GL_RenderData *data = (GL_RenderData *) renderer->driverdata; 386 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
392 387 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
393 data->updateSize = SDL_TRUE; 388
394 return 0; 389 data->glViewport(0, 0, window->w, window->h);
390 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0, 0.0,
391 1.0);
395 } 392 }
396 393
397 static __inline__ int 394 static __inline__ int
398 power_of_2(int input) 395 power_of_2(int input)
399 { 396 {