diff options
Diffstat (limited to 'glslwrite.c')
| -rw-r--r-- | glslwrite.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/glslwrite.c b/glslwrite.c index 6673146..5b09c86 100644 --- a/glslwrite.c +++ b/glslwrite.c @@ -91,17 +91,27 @@ static void savePNG(int width, int height, const char *output_dir) { } static void usage(void) { - fprintf(stderr, "Usage: glslwrite [-s <step>] [-f <frames>] [-0 <param0>] [-1 <param1>] [-2 <param2>] <shader>\n"); + fprintf(stderr, "Usage: glslwrite [-w <width>] [-h <height>] [-s <step>] [-f <frames>] [-0 <param0>] [-1 <param1>] [-2 <param2>] <shader>\n"); exit(1); } int main(int argc, char *argv[]) { + int width = 800, height = 800; + while (true) { - int c = getopt(argc, argv, "s:f:0:1:2:"); + int c = getopt(argc, argv, "w:h:s:f:0:1:2:"); if (c == -1) break; switch (c) { + case 'w': + width = atoi(optarg); + break; + + case 'h': + height = atoi(optarg); + break; + case 's': step = atof(optarg); break; @@ -138,7 +148,7 @@ int main(int argc, char *argv[]) { SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8); SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8); - SDL_Window *window = SDL_CreateWindow("glslwrite", 0, 0, 800, 800, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE); + SDL_Window *window = SDL_CreateWindow("glslwrite", 0, 0, width, height, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE); SDL_GLContext ctx = SDL_GL_CreateContext(window); filename = argv[optind]; |