Mercurial > repos > blastem

comparison render_sdl.c @ 1004:fc000f245cc8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Set vsync state based on config file rather than just using whatever the system decides for us.
author Michael Pavone <pavone@retrodev.com>
date Sun, 01 May 2016 14:59:40 -0700
parents 534f522a1162
children 7267bc1ab547
comparison
equal deleted inserted replaced
1003:534f522a1162 1004:fc000f245cc8
266 main_width = width; 266 main_width = width;
267 main_height = height; 267 main_height = height;
268 is_fullscreen = fullscreen; 268 is_fullscreen = fullscreen;
269 269
270 render_gl = 0; 270 render_gl = 0;
271 tern_val def = {.ptrval = "off"};
272 char *vsync = tern_find_path_default(config, "video\0vsync\0", def).ptrval;
271 273
272 #ifndef DISABLE_OPENGL 274 #ifndef DISABLE_OPENGL
273 flags |= SDL_WINDOW_OPENGL; 275 flags |= SDL_WINDOW_OPENGL;
274 SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5); 276 SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
275 SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5); 277 SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
286 warning("Initialization of GLEW failed with code %d\n", res); 288 warning("Initialization of GLEW failed with code %d\n", res);
287 } 289 }
288 290
289 if (res == GLEW_OK && GLEW_VERSION_2_0) { 291 if (res == GLEW_OK && GLEW_VERSION_2_0) {
290 render_gl = 1; 292 render_gl = 1;
293 if (!strcmp("tear", vsync)) {
294 if (SDL_GL_SetSwapInterval(-1) < 0) {
295 warning("late tear is not available (%s), using normal vsync\n", SDL_GetError());
296 vsync = "on";
297 } else {
298 vsync = NULL;
299 }
300 }
301 if (vsync) {
302 if (SDL_GL_SetSwapInterval(!strcmp("on", vsync)) < 0) {
303 warning("Failed to set vsync to %s: %s\n", vsync, SDL_GetError());
304 }
305 }
291 } else { 306 } else {
292 SDL_DestroyWindow(main_window); 307 warning("OpenGL 2.0 is unavailable, falling back to SDL2 renderer\n");
293 warning("OpenGL 2.0 is unavailable, falling back to SDL2 renderer\n", stderr); 308 #endif
294 #endif 309 flags = SDL_RENDERER_ACCELERATED;
295 SDL_CreateWindowAndRenderer(width, height, flags, &main_window, &main_renderer); 310 if (!strcmp("on", vsync) || !strcmp("tear", vsync)) {
311 flags |= SDL_RENDERER_PRESENTVSYNC;
312 }
313 main_renderer = SDL_CreateRenderer(main_window, -1, flags);
296 314
297 if (!main_window || !main_renderer) { 315 if (!main_window || !main_renderer) {
298 fatal_error("unable to create SDL window: %s\n", SDL_GetError()); 316 fatal_error("unable to create SDL window: %s\n", SDL_GetError());
299 } 317 }
300 main_clip.x = main_clip.y = 0; 318 main_clip.x = main_clip.y = 0;
306 324
307 SDL_GetWindowSize(main_window, &width, &height); 325 SDL_GetWindowSize(main_window, &width, &height);
308 printf("Window created with size: %d x %d\n", width, height); 326 printf("Window created with size: %d x %d\n", width, height);
309 float src_aspect = 4.0/3.0; 327 float src_aspect = 4.0/3.0;
310 float aspect = (float)width / height; 328 float aspect = (float)width / height;
311 tern_val def = {.ptrval = "normal"}; 329 def.ptrval = "normal";
312 int stretch = fabs(aspect - src_aspect) > 0.01 && !strcmp(tern_find_path_default(config, "video\0aspect\0", def).ptrval, "stretch"); 330 int stretch = fabs(aspect - src_aspect) > 0.01 && !strcmp(tern_find_path_default(config, "video\0aspect\0", def).ptrval, "stretch");
313 331
314 if (!stretch) { 332 if (!stretch) {
315 #ifndef DISABLE_OPENGL 333 #ifndef DISABLE_OPENGL
316 if (render_gl) { 334 if (render_gl) {
333 main_clip.y = (height - main_clip.h) / 2; 351 main_clip.y = (height - main_clip.h) / 2;
334 #ifndef DISABLE_OPENGL 352 #ifndef DISABLE_OPENGL
335 } 353 }
336 #endif 354 #endif
337 } 355 }
338 def.ptrval = "false"; 356 def.ptrval = "off";
339 scanlines = !strcmp(tern_find_path_default(config, "video\0scanlines\0", def).ptrval, "true"); 357 scanlines = !strcmp(tern_find_path_default(config, "video\0scanlines\0", def).ptrval, "on");
340 358
341 caption = title; 359 caption = title;
342 min_delay = 0; 360 min_delay = 0;
343 for (int i = 0; i < 100; i++) { 361 for (int i = 0; i < 100; i++) {
344 uint32_t start = SDL_GetTicks(); 362 uint32_t start = SDL_GetTicks();