Change native mode size only if 2 back to back frames have same width and height.

diff --git a/custom.cpp b/custom.cpp
index a308ac8817ab580b4759fb87823a08add7feaa4d..7eac62e8674e3f52d56fc49a11ffc9fd22daa686 100644 (file)
--- a/custom.cpp
+++ b/custom.cpp
@@ -446,6 +446,8 @@ int linear_vpos, linear_hpos, linear_vpos_prev[3], linear_hpos_prev[3];
 static int linear_vpos_vsync;
 static int linear_display_vpos;
 int current_linear_vpos, current_linear_hpos;
+static int current_linear_vpos_temp, current_linear_hpos_temp;
+static int current_linear_temp_change;
 static int display_hstart_cyclewait, display_hstart_cyclewait_cnt, display_hstart_cyclewait_end;
 static int display_hstart_cyclewait_skip, display_hstart_cyclewait_skip2;
 static bool display_hstart_cyclewait_start;
@@ -2164,6 +2166,9 @@ static void init_hz_reset(void)
        linear_hpos_prev[2] = linear_hpos;
        current_linear_vpos = linear_vpos + vsync_startline - lof_store;
        current_linear_hpos = linear_hpos;
+       current_linear_hpos_temp = current_linear_hpos;
+       current_linear_vpos_temp = current_linear_vpos;
+       current_linear_temp_change = 0;
        init_hz();
 }
 
@@ -5077,18 +5082,30 @@ static void vsync_check_vsyncmode(void)
                                if (linear_hpos_prev[2] == linear_hpos_prev[0] || linear_hpos_prev[1] == linear_hpos_prev[0]) {
                                        int hp = linear_hpos_prev[0] > linear_hpos_prev[2] ? linear_hpos_prev[0] : linear_hpos_prev[2];
                                        int vp = linear_vpos_prev[0] > linear_vpos_prev[2] ? linear_vpos_prev[0] : linear_vpos_prev[2];
-                                       if (abs(hp - current_linear_hpos) > 1 || abs(vp - current_linear_vpos) > 1) {
-                                               current_linear_hpos = hp;
-                                               current_linear_vpos = vp;
-                                               init_beamcon0();
-                                               compute_framesync();
-                                               devices_syncchange();
+                                       if (abs(hp - current_linear_hpos_temp) > 1 || abs(vp - current_linear_vpos_temp) > 1) {
+                                               current_linear_hpos_temp = hp;
+                                               current_linear_vpos_temp = vp;
+                                               current_linear_temp_change = 2;
                                        }
                                }
                        }
                }
        }
 
+       if (current_linear_temp_change > 0) {
+               current_linear_temp_change--;
+               if (current_linear_temp_change == 0) {
+                       if (current_linear_hpos != current_linear_hpos_temp ||
+                               current_linear_vpos != current_linear_vpos_temp) {
+                               current_linear_hpos = current_linear_hpos_temp;
+                               current_linear_vpos = current_linear_vpos_temp;
+                               init_beamcon0();
+                               compute_framesync();
+                               devices_syncchange();
+                       }
+               }
+       }
+
        if (varsync_changed > 0) {
                varsync_changed--;
                if (varsync_changed == 0) {