trying to fix export

nasu.c

@@ -392,6 +392,20 @@ opendoc(Document *d, char *name)
 	return 1;
 }
 
+int
+savebmp(void)
+{
+	int w, h;
+	SDL_GetRendererOutputSize(gRenderer, &w, &h);
+	w /= ZOOM;
+	h /= ZOOM;
+	SDL_Surface *sshot = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8 * 4, w * 4, 0, 0, 0, 0);
+	SDL_SaveBMP(sshot, "screenshot.bmp");
+	printf("Rendered screenshot\n");
+	SDL_FreeSurface(sshot);
+	return 1;
+}
+
 void
 lookat(int x, int y)
 {
@@ -431,23 +445,6 @@ pasteclip(Uint8 *clip, int id)
 	clearclip(clip);
 }
 
-int
-savebmp(void)
-{
-	SDL_Rect rect = {0, 0, WIDTH * ZOOM, HEIGHT * ZOOM};
-	SDL_Surface *surface = SDL_GetWindowSurface(gWindow);
-	SDL_RenderReadPixels(gRenderer,
-		&rect,
-		SDL_PIXELFORMAT_ARGB8888,
-		surface->pixels,
-		surface->pitch);
-	if(SDL_SaveBMP(surface, "nasu-render.bmp"))
-		return error("Render", "Failed");
-	puts("Render: nasu-render.bmp");
-	SDL_FreeSurface(surface);
-	return 1;
-}
-
 void
 selectoption(int option)
 {