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comparison src/video/SDL_renderer_gl.c @ 2833:c2e182a37f5f

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Whoops, can't call glOrtho() repeatedly
author Sam Lantinga <slouken@libsdl.org>
date Fri, 05 Dec 2008 07:00:58 +0000
parents 0379769e8caa
children f38257b5d936
comparison
equal deleted inserted replaced
2832:0379769e8caa 2833:c2e182a37f5f
119 }; 119 };
120 120
121 typedef struct 121 typedef struct
122 { 122 {
123 SDL_GLContext context; 123 SDL_GLContext context;
124 SDL_bool updateSize;
124 SDL_bool GL_ARB_texture_rectangle_supported; 125 SDL_bool GL_ARB_texture_rectangle_supported;
125 SDL_bool GL_EXT_paletted_texture_supported; 126 SDL_bool GL_EXT_paletted_texture_supported;
126 int blendMode; 127 int blendMode;
127 int scaleMode; 128 int scaleMode;
128 129
355 if (data->GL_ARB_texture_rectangle_supported) { 356 if (data->GL_ARB_texture_rectangle_supported) {
356 data->glEnable(GL_TEXTURE_RECTANGLE_ARB); 357 data->glEnable(GL_TEXTURE_RECTANGLE_ARB);
357 } else { 358 } else {
358 data->glEnable(GL_TEXTURE_2D); 359 data->glEnable(GL_TEXTURE_2D);
359 } 360 }
361 data->updateSize = SDL_TRUE;
362
363 return renderer;
364 }
365
366 static int
367 GL_ActivateRenderer(SDL_Renderer * renderer)
368 {
369 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
370 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
371
372 if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
373 return -1;
374 }
375 if (data->updateSize) {
376 GL_DisplayModeChanged(renderer);
377 data->updateSize = SDL_FALSE;
378 }
379 return 0;
380 }
381
382 static int
383 GL_DisplayModeChanged(SDL_Renderer * renderer)
384 {
385 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
386 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
387
360 data->glMatrixMode(GL_PROJECTION); 388 data->glMatrixMode(GL_PROJECTION);
361 data->glLoadIdentity(); 389 data->glLoadIdentity();
362 data->glMatrixMode(GL_MODELVIEW); 390 data->glMatrixMode(GL_MODELVIEW);
363 data->glLoadIdentity(); 391 data->glLoadIdentity();
364
365 return renderer;
366 }
367
368 static int
369 GL_ActivateRenderer(SDL_Renderer * renderer)
370 {
371 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
372 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
373
374 if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
375 return -1;
376 }
377 data->glViewport(0, 0, window->w, window->h); 392 data->glViewport(0, 0, window->w, window->h);
378 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0, 0.0, 393 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0, 0.0,
379 1.0); 394 1.0);
380 return 0; 395 return 0;
381 }
382
383 static int
384 GL_DisplayModeChanged(SDL_Renderer * renderer)
385 {
386 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
387 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
388
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);
392 } 396 }
393 397
394 static __inline__ int 398 static __inline__ int
395 power_of_2(int input) 399 power_of_2(int input)
396 { 400 {