From c006d9e3d7b4c7f0fda6c27062e362cfc7515630 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Fri, 12 Aug 2011 02:37:23 +0300
Subject: [PATCH] gpu_unai: redo frameskip

the previous code wasn't that functional
---
 plugins/gpu_unai/gpu.cpp       | 21 +++++++++++++++------
 plugins/gpu_unai/gpu_command.h |  8 ++++----
 2 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/plugins/gpu_unai/gpu.cpp b/plugins/gpu_unai/gpu.cpp
index ea983645..fefc2773 100644
--- a/plugins/gpu_unai/gpu.cpp
+++ b/plugins/gpu_unai/gpu.cpp
@@ -29,6 +29,7 @@ int linesInterlace = 0;  /* internal lines interlace */
 int linesInterlace_user = 0; /* Lines interlace */
 
 bool isSkip = false; /* skip frame (info coming from GPU) */
+bool wasSkip = false;
 bool skipFrame = false; /* skip frame (according to frame skip) */
 bool alt_fps = false; /* Alternative FPS algorithm */
 bool show_fps = false; /* Show FPS statistics */
@@ -551,6 +552,11 @@ void  GPU_writeStatus(u32 data)
 		DisplayArea[0] = (data & 0x000003FF); //(short)(data & 0x3ff);
 		DisplayArea[1] = ((data & 0x0007FC00)>>10); //(data & 0x000FFC00) >> 10; //(short)((data>>10)&0x1ff);
 		fb_dirty = true;
+		wasSkip = isSkip;
+		if (isSkip)
+			isSkip = false;
+		else
+			isSkip = skipFrame;
 		break;
 	case 0x07:
 		DisplayArea[4] = data & 0x000003FF; //(short)(data & 0x3ff);
@@ -884,15 +890,18 @@ void GPU_updateLace(void)
 	if (!fb_dirty || (GPU_GP1&0x08800000))
 		return;
 
-	if (!isSkip) {
+	if (!wasSkip) {
 		blit();
-
 		fb_dirty = false;
-		if (cbs->fskip_advice)
-			isSkip = true;
+		skCount = 0;
 	}
-	else
-		isSkip = false;
+	else {
+		skCount++;
+		if (skCount >= 8)
+			wasSkip = isSkip = 0;
+	}
+
+	skipFrame = cbs->fskip_advice;
 }
 
 long GPUopen(unsigned long *, char *, char *)
diff --git a/plugins/gpu_unai/gpu_command.h b/plugins/gpu_unai/gpu_command.h
index 2dc7f5bf..a5b61b67 100644
--- a/plugins/gpu_unai/gpu_command.h
+++ b/plugins/gpu_unai/gpu_command.h
@@ -400,7 +400,7 @@ void gpuSendPacketFunction(const int PRIM)
 				TextureWindow[2] = TextureMask[(temp >> 0) & 0x1F];
 				TextureWindow[3] = TextureMask[(temp >> 5) & 0x1F];
 				gpuSetTexture(GPU_GP1);
-				isSkip = false;
+				//isSkip = false;
 				DO_LOG(("TextureWindow(0x%x)\n",PRIM));
 			}
 			break;
@@ -409,7 +409,7 @@ void gpuSendPacketFunction(const int PRIM)
 				const u32 temp = PacketBuffer.U4[0];
 				DrawingArea[0] = temp         & 0x3FF;
 				DrawingArea[1] = (temp >> 10) & 0x3FF;
-				isSkip = false;
+				//isSkip = false;
 				DO_LOG(("DrawingArea_Pos(0x%x)\n",PRIM));
 			}
 			break;
@@ -418,7 +418,7 @@ void gpuSendPacketFunction(const int PRIM)
 				const u32 temp = PacketBuffer.U4[0];
 				DrawingArea[2] = (temp         & 0x3FF) + 1;
 				DrawingArea[3] = ((temp >> 10) & 0x3FF) + 1;
-				isSkip = false;
+				//isSkip = false;
 				DO_LOG(("DrawingArea_Size(0x%x)\n",PRIM));
 			}
 			break;
@@ -427,7 +427,7 @@ void gpuSendPacketFunction(const int PRIM)
 				const u32 temp = PacketBuffer.U4[0];
 				DrawingOffset[0] = ((long)temp<<(32-11))>>(32-11);
 				DrawingOffset[1] = ((long)temp<<(32-22))>>(32-11);
-				isSkip = false;
+				//isSkip = false;
 				DO_LOG(("DrawingOffset(0x%x)\n",PRIM));
 			}
 			break;
-- 
2.39.5