Make init_movit() return a true/false error value.

[movit] / demo.cpp

diff --git a/demo.cpp b/demo.cpp
index b401f0574f21dcb904ac61dab1d854137838c510..81bda2d60cf7de5659bcd4391e9bb1bc81e782f5 100644 (file)
--- a/demo.cpp
+++ b/demo.cpp
@@ -176,11 +176,18 @@ int main(int argc, char **argv)
        SDL_SetVideoMode(WIDTH, HEIGHT, 0, SDL_OPENGL);
        SDL_WM_SetCaption("OpenGL window", NULL);
 
-       init_movit(".", MOVIT_DEBUG_ON);
+       CHECK(init_movit(".", MOVIT_DEBUG_ON));
        printf("GPU texture subpixel precision: about %.1f bits\n",
                log2(1.0f / movit_texel_subpixel_precision));
        printf("Wrongly rounded x+0.48 or x+0.52 values: %d/510\n",
                movit_num_wrongly_rounded);
+       if (movit_num_wrongly_rounded > 0) {
+               if (movit_shader_rounding_supported) {
+                       printf("Rounding off in the shader to compensate.\n");
+               } else {
+                       printf("No shader roundoff available; cannot compensate.\n");
+               }
+       }
        
        unsigned img_w, img_h;
        unsigned char *src_img = load_image(argc > 1 ? argv[1] : "blg_wheels_woman_1.jpg", &img_w, &img_h);