[feature] eliminate the dependency of mathlib linking

1 files changed, 35 insertions, 0 deletions

diff --git a/emu/fbgl_viewer.c b/emu/fbgl_viewer.c
new file mode 100644
index 0000000..c6e077d
--- /dev/null
+++ b/emu/fbgl_viewer.c
@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include <SDL2/SDL.h>
+
+#define SCREEN_WIDTH 800
+#define SCREEN_HEIGHT 600
+#define SCREEN_TITLE "FBGL Viewer"
+
+int main()
+{
+	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+		printf("Couldn't initialize SDL: %s\n", SDL_GetError());
+		return EXIT_FAILURE;
+	}
+
+	SDL_Window *window = SDL_CreateWindow(SCREEN_TITLE,
+					      SDL_WINDOWPOS_UNDEFINED,
+					      SDL_WINDOWPOS_UNDEFINED,
+					      SCREEN_WIDTH, SCREEN_HEIGHT, 0);
+	if (!window) {
+		printf("Failed to open %d x %d window: %s\n", SCREEN_WIDTH,
+		       SCREEN_HEIGHT, SDL_GetError());
+		return EXIT_FAILURE;
+	}
+
+	SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
+	SDL_SetRenderDrawColor(renderer, 255, 255, 255, 250);
+	SDL_RenderClear(renderer);
+	SDL_RenderPresent(renderer);
+	SDL_Delay(2000);
+	SDL_DestroyWindow(window);
+	SDL_DestroyRenderer(renderer);
+	SDL_Quit();
+
+	return 0;
+}