diff options
Diffstat (limited to 'render_sdl.c')
| -rwxr-xr-x | render_sdl.c | 51 |
1 files changed, 33 insertions, 18 deletions
diff --git a/render_sdl.c b/render_sdl.c index 607a83e..caca0bd 100755 --- a/render_sdl.c +++ b/render_sdl.c @@ -276,6 +276,28 @@ static void render_quit() } } +static float config_aspect() +{ + static float aspect = 0.0f; + if (aspect == 0.0f) { + char *config_aspect = tern_find_path_default(config, "video\0aspect\0", (tern_val){.ptrval = "4:3"}, TVAL_PTR).ptrval; + if (strcmp("stretch", config_aspect)) { + aspect = 4.0f/3.0f; + char *end; + float aspect_numerator = strtof(config_aspect, &end); + if (aspect_numerator > 0.0f && *end == ':') { + float aspect_denominator = strtof(end+1, &end); + if (aspect_denominator > 0.0f && !*end) { + aspect = aspect_numerator / aspect_denominator; + } + } + } else { + aspect = -1.0f; + } + } + return aspect; +} + static void update_aspect() { //reset default values @@ -283,20 +305,9 @@ static void update_aspect() main_clip.w = main_width; main_clip.h = main_height; main_clip.x = main_clip.y = 0; - //calculate configured aspect ratio - char *config_aspect = tern_find_path_default(config, "video\0aspect\0", (tern_val){.ptrval = "4:3"}, TVAL_PTR).ptrval; - if (strcmp("stretch", config_aspect)) { - float src_aspect = 4.0f/3.0f; - char *end; - float aspect_numerator = strtof(config_aspect, &end); - if (aspect_numerator > 0.0f && *end == ':') { - float aspect_denominator = strtof(end+1, &end); - if (aspect_denominator > 0.0f && !*end) { - src_aspect = aspect_numerator / aspect_denominator; - } - } + if (config_aspect() > 0.0f) { float aspect = (float)main_width / main_height; - if (fabs(aspect - src_aspect) < 0.01f) { + if (fabs(aspect - config_aspect()) < 0.01f) { //close enough for government work return; } @@ -304,16 +315,16 @@ static void update_aspect() if (render_gl) { for (int i = 0; i < 4; i++) { - if (aspect > src_aspect) { - vertex_data[i*2] *= src_aspect/aspect; + if (aspect > config_aspect()) { + vertex_data[i*2] *= config_aspect()/aspect; } else { - vertex_data[i*2+1] *= aspect/src_aspect; + vertex_data[i*2+1] *= aspect/config_aspect(); } } } else { #endif - main_clip.w = aspect > src_aspect ? src_aspect * (float)main_height : main_width; - main_clip.h = aspect > src_aspect ? main_height : main_width / src_aspect; + main_clip.w = aspect > config_aspect() ? config_aspect() * (float)main_height : main_width; + main_clip.h = aspect > config_aspect() ? main_height : main_width / config_aspect(); main_clip.x = (main_width - main_clip.w) / 2; main_clip.y = (main_height - main_clip.h) / 2; #ifndef DISABLE_OPENGL @@ -334,6 +345,10 @@ void render_init(int width, int height, char * title, uint8_t fullscreen) fatal_error("Unable to init SDL: %s\n", SDL_GetError()); } atexit(SDL_Quit); + if (height <= 0) { + float aspect = config_aspect() > 0.0f ? config_aspect() : 4.0f/3.0f; + height = ((float)width / aspect) + 0.5f; + } printf("width: %d, height: %d\n", width, height); windowed_width = width; windowed_height = height; |