Make it render regularly while idling

3 files changed, 18 insertions, 4 deletions

diff --git a/emulator.cpp b/emulator.cpp
index 0fb50dd..7dab3af 100644
--- a/emulator.cpp
+++ b/emulator.cpp
@@ -532,8 +532,10 @@ static int emulator(M68KDebuggingControl& m68k_debug, Graphics& graphics, CharDe
                 } else {
                     struct pollfd fds[1] = {
                         {/*.fd = */socket_fd, /*.events = */POLLIN, /*.revents = */0}};
-                    const int timeout_msecs = 30;
-                    poll(fds, 1, timeout_msecs);
+                    const int timeout_msecs = 200;
+                    if (0 == poll(fds, 1, timeout_msecs)) {
+                        graphics.ReRender();
+                    }
                 }
                 continue;
             }
@@ -578,8 +580,10 @@ static int emulator(M68KDebuggingControl& m68k_debug, Graphics& graphics, CharDe
             } else if (err == EWOULDBLOCK) {
                 struct pollfd fds[1] = {
                     {/*.fd = */conn_fd, /*.events = */POLLIN, /*.revents = */0}};
-                const int timeout_msecs = 30;
-                poll(fds, 1, timeout_msecs);
+                const int timeout_msecs = 200;
+                if (0 == poll(fds, 1, timeout_msecs)) {
+                    graphics.ReRender();
+                }
             }
         }
         close(conn_fd);
diff --git a/graphics.cpp b/graphics.cpp
index d193b50..1473f65 100644
--- a/graphics.cpp
+++ b/graphics.cpp
@@ -96,3 +96,12 @@ void Graphics::Render(const VDP& vdp)
     (void) buffer;
 #endif
 }
+
+void Graphics::ReRender()
+{
+#if HAS_GRAPHICS == 1
+    SDL_RenderClear(_renderer);
+    SDL_RenderCopy(_renderer, _render_texture, NULL, NULL);
+    SDL_RenderPresent(_renderer);
+#endif
+}
diff --git a/graphics.hpp b/graphics.hpp
index a88cd61..98ad848 100644
--- a/graphics.hpp
+++ b/graphics.hpp
@@ -15,6 +15,7 @@ public:
     ~Graphics();
     bool IsOk() const { return _initialized_ok; }
     void Render(const VDP&);
+    void ReRender();
 
 private:
     bool _initialized_ok{};