Avoid the need to hard-reset the Dreamcast to exit the sample

samples/blend_test/main.c

@@ -4,6 +4,10 @@
  * output and incorrect depth testing
  */
 
+#ifdef __DREAMCAST__
+#include <kos.h>
+#endif
+
 #include "GL/gl.h"
 #include "GL/glu.h"
 #include "GL/glkos.h"
@@ -42,6 +46,23 @@ void ReSizeGLScene(int Width, int Height)
     glMatrixMode(GL_MODELVIEW);
 }
 
+int check_start() {
+#ifdef __DREAMCAST__
+    maple_device_t *cont;
+    cont_state_t *state;
+
+    cont = maple_enum_type(0, MAPLE_FUNC_CONTROLLER);
+
+    if(cont) {
+        state = (cont_state_t *)maple_dev_status(cont);
+
+        if(state)
+            return state->buttons & CONT_START;
+    }
+#endif
+
+    return 0;
+}
 
 void DrawQuad(const float* colour) {
     glBegin(GL_QUADS);
@@ -98,6 +119,9 @@ int main(int argc, char **argv)
     ReSizeGLScene(640, 480);
 
     while(1) {
+        if(check_start())
+            break;
+
         DrawGLScene();
     }