ignore antiflicker when framerate is below 50

skyfloogle · Jun 16, 2024 · 8fc1ae5 · 8fc1ae5
1 parent b2889ae
commit 8fc1ae5
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Showing 4 changed files with 16 additions and 6 deletions.
diff --git a/include/vb_dsp.h b/include/vb_dsp.h
@@ -74,7 +74,7 @@ typedef struct {
 HWORD V810_RControll(bool reset);
 
 void video_init(void);
-void video_render(int alt_buf);
+void video_render(int alt_buf, bool on_time);
 void video_flush(bool left_for_both);
 void video_quit(void);
 

diff --git a/source/3ds/main.c b/source/3ds/main.c
@@ -35,6 +35,7 @@ int main(void) {
     int qwe;
     int frame = 0;
     int err = 0;
+    bool on_time = false;
     PrintConsole main_console;
 #if DEBUGLEVEL == 0
     PrintConsole debug_console;
@@ -135,9 +136,15 @@ int main(void) {
                 guiUpdate(osTickCounterRead(&frameTickCounter), osTickCounterRead(&drcTickCounter));
 
                 if (tVIPREG.DPCTRL & 0x0002) {
-                    video_render(alt_buf);
+                    video_render(alt_buf, on_time);
+                    on_time = true;
+                } else if (on_time) {
+                    if (tVBOpt.ANTIFLICKER) video_flush(false);
+                    on_time = false;
                 }
                 C3D_FrameEnd(0);
+            } else {
+                on_time = false;
             }
             if (tVIPREG.XPCTRL & 0x0002) {
                 if (tDSPCACHE.DDSPDataState[alt_buf] != GPU_CLEAR) {
@@ -149,9 +156,12 @@ int main(void) {
         } else {
             // no game graphics, draw menu if possible
             if (C3D_FrameBegin(C3D_FRAME_NONBLOCK)) {
+                // refresh top screen for antiflicker
+                if (tVBOpt.ANTIFLICKER && on_time) video_flush(false);
                 guiUpdate(osTickCounterRead(&frameTickCounter), osTickCounterRead(&drcTickCounter));
                 C3D_FrameEnd(0);
             }
+            on_time = false;
         }
 
         // if hold, turn off fast forward, as it'll be turned back on while reading input

diff --git a/source/3ds/video.c b/source/3ds/video.c
@@ -225,8 +225,8 @@ void video_init(void) {
 
 static int g_alt_buf = 0;
 
-void video_render(int alt_buf) {
-	if (tVBOpt.ANTIFLICKER) video_flush(false);
+void video_render(int alt_buf, bool on_time) {
+	if (tVBOpt.ANTIFLICKER && on_time) video_flush(false);
 	g_alt_buf = alt_buf;
 	if (tDSPCACHE.ColumnTableInvalid)
 		processColumnTable();
@@ -276,7 +276,7 @@ void video_render(int alt_buf) {
 	}
 
 	C3D_BlendingColor(0x80808080);
-	if (tVBOpt.ANTIFLICKER) C3D_AlphaBlend(GPU_BLEND_ADD, 0, GPU_CONSTANT_ALPHA, GPU_ONE_MINUS_CONSTANT_ALPHA, 0, 0);
+	if (tVBOpt.ANTIFLICKER && on_time) C3D_AlphaBlend(GPU_BLEND_ADD, 0, GPU_CONSTANT_ALPHA, GPU_ONE_MINUS_CONSTANT_ALPHA, 0, 0);
 	video_flush(false);
 	C3D_ColorLogicOp(GPU_LOGICOP_COPY);
 }

diff --git a/source/common/vb_gui.c b/source/common/vb_gui.c
@@ -318,7 +318,7 @@ int emulation_lstate(int state) {
 
     clearCache();
     C3D_FrameBegin(0);
-    video_render((tVIPREG.tFrameBuffer) % 2);
+    video_render((tVIPREG.tFrameBuffer) % 2, false);
     C3D_FrameEnd(0);
 
     guiop = AKILL;