From 287c5c61f8c1793e782c87ce5d45cd2f87959178 Mon Sep 17 00:00:00 2001
From: taotao54321 <taotao54321@gmail.com>
Date: Mon, 12 Mar 2012 06:27:34 +0000
Subject: [PATCH] PCE BG Viewer:   Added a dropdown box to select VDC1/VDC2.  
 Now it is automatically updated in 3fps. (this is just a makeshift. PCE core
 should provide callbacks)

---
 BizHawk.MultiClient/MainForm.cs               |  1 +
 .../PCEtools/PCEBGViewer.Designer.cs          | 16 +++++++-
 BizHawk.MultiClient/PCEtools/PCEBGViewer.cs   | 37 ++++++++++++++-----
 3 files changed, 42 insertions(+), 12 deletions(-)

diff --git a/BizHawk.MultiClient/MainForm.cs b/BizHawk.MultiClient/MainForm.cs
index c75d2ac22f..1ab911e8a9 100644
--- a/BizHawk.MultiClient/MainForm.cs
+++ b/BizHawk.MultiClient/MainForm.cs
@@ -1802,6 +1802,7 @@ namespace BizHawk.MultiClient
 			NESNameTableViewer1.UpdateValues();
 			NESPPU1.UpdateValues();
 			PCEBGViewer1.UpdateValues();
+			PCEBGViewer1.Generate(); // TODO: just a makeshift. PCE core should provide callbacks.
 			TAStudio1.UpdateValues();
 		}
 
diff --git a/BizHawk.MultiClient/PCEtools/PCEBGViewer.Designer.cs b/BizHawk.MultiClient/PCEtools/PCEBGViewer.Designer.cs
index a16cb4e407..af8167a953 100644
--- a/BizHawk.MultiClient/PCEtools/PCEBGViewer.Designer.cs
+++ b/BizHawk.MultiClient/PCEtools/PCEBGViewer.Designer.cs
@@ -28,12 +28,22 @@
 		/// </summary>
 		private void InitializeComponent()
 		{
+			this.vdcComboBox = new System.Windows.Forms.ComboBox();
 			this.canvas = new BizHawk.MultiClient.PCEBGCanvas();
 			this.SuspendLayout();
 			// 
+			// vdcComboBox
+			// 
+			this.vdcComboBox.FormattingEnabled = true;
+			this.vdcComboBox.Location = new System.Drawing.Point(13, 13);
+			this.vdcComboBox.Name = "vdcComboBox";
+			this.vdcComboBox.Size = new System.Drawing.Size(121, 20);
+			this.vdcComboBox.TabIndex = 1;
+			this.vdcComboBox.SelectedIndexChanged += new System.EventHandler(this.vdcComboBox_SelectedIndexChanged);
+			// 
 			// canvas
 			// 
-			this.canvas.Location = new System.Drawing.Point(12, 12);
+			this.canvas.Location = new System.Drawing.Point(12, 49);
 			this.canvas.Name = "canvas";
 			this.canvas.Size = new System.Drawing.Size(1024, 512);
 			this.canvas.TabIndex = 0;
@@ -42,7 +52,8 @@
 			// 
 			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-			this.ClientSize = new System.Drawing.Size(1056, 549);
+			this.ClientSize = new System.Drawing.Size(1056, 573);
+			this.Controls.Add(this.vdcComboBox);
 			this.Controls.Add(this.canvas);
 			this.Name = "PCEBGViewer";
 			this.ShowIcon = false;
@@ -56,5 +67,6 @@
 		#endregion
 
 		private PCEBGCanvas canvas;
+		private System.Windows.Forms.ComboBox vdcComboBox;
 	}
 }
\ No newline at end of file
diff --git a/BizHawk.MultiClient/PCEtools/PCEBGViewer.cs b/BizHawk.MultiClient/PCEtools/PCEBGViewer.cs
index b473769794..75748377ea 100644
--- a/BizHawk.MultiClient/PCEtools/PCEBGViewer.cs
+++ b/BizHawk.MultiClient/PCEtools/PCEBGViewer.cs
@@ -18,24 +18,32 @@ namespace BizHawk.MultiClient
 		public PCEBGViewer()
 		{
 			InitializeComponent();
+			vdcComboBox.Items.Add("VDC1");
+			vdcComboBox.Items.Add("VDC2");
+			vdcComboBox.DropDownStyle = ComboBoxStyle.DropDownList;
+			vdcComboBox.SelectedIndex = 0;
 			Activated += (o, e) => Generate();
 		}
 
-		private unsafe void Generate()
+		public unsafe void Generate()
 		{
 			if (!this.IsHandleCreated || this.IsDisposed) return;
 			if (pce == null) return;
 
-			int width = 8 * pce.VDC1.BatWidth;
-			int height = 8 * pce.VDC1.BatHeight;
+			if (Global.Emulator.Frame % 20 != 0) return; // TODO: just a makeshift. hard-coded 3fps
+
+			VDC vdc = vdcComboBox.SelectedIndex == 0 ? pce.VDC1 : pce.VDC2;
+
+			int width = 8 * vdc.BatWidth;
+			int height = 8 * vdc.BatHeight;
 			BitmapData buf = canvas.bat.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, canvas.bat.PixelFormat);
 			int pitch = buf.Stride / 4;
 			int* begin = (int*)buf.Scan0.ToPointer();
 			int* p = begin;
 
 			// TODO: this does not clear background, why?
-			for (int i = 0; i < pitch * buf.Height; ++i, ++p)
-				*p = canvas.BackColor.ToArgb();
+			//for (int i = 0; i < pitch * buf.Height; ++i, ++p)
+			//	*p = canvas.BackColor.ToArgb();
 
 			p = begin;
 			for (int y = 0; y < height; ++y)
@@ -46,11 +54,11 @@ namespace BizHawk.MultiClient
 				{
 					int xTile = x / 8;
 					int xOfs = x % 8;
-					int tileNo = pce.VDC1.VRAM[(ushort)(((yTile * pce.VDC1.BatWidth) + xTile))] & 0x07FF;
-					int paletteNo = pce.VDC1.VRAM[(ushort)(((yTile * pce.VDC1.BatWidth) + xTile))] >> 12;
+					int tileNo = vdc.VRAM[(ushort)(((yTile * vdc.BatWidth) + xTile))] & 0x07FF;
+					int paletteNo = vdc.VRAM[(ushort)(((yTile * vdc.BatWidth) + xTile))] >> 12;
 					int paletteBase = paletteNo * 16;
 
-					byte c = pce.VDC1.PatternBuffer[(tileNo * 64) + (yOfs * 8) + xOfs];
+					byte c = vdc.PatternBuffer[(tileNo * 64) + (yOfs * 8) + xOfs];
 					if (c == 0)
 						*p = pce.VCE.Palette[0];
 					else
@@ -67,13 +75,15 @@ namespace BizHawk.MultiClient
 
 		public void Restart()
 		{
+			if (!this.IsHandleCreated || this.IsDisposed) return;
 			if (!(Global.Emulator is PCEngine))
 			{
 				this.Close();
 				return;
 			}
-			else
-			    pce = Global.Emulator as PCEngine;
+			pce = Global.Emulator as PCEngine;
+			vdcComboBox.SelectedIndex = 0;
+			vdcComboBox.Enabled = pce.SystemId == "SGX";
 		}
 
 		public void UpdateValues()
@@ -87,11 +97,18 @@ namespace BizHawk.MultiClient
 		private void PCEBGViewer_Load(object sender, EventArgs e)
 		{
 			pce = Global.Emulator as PCEngine;
+			vdcComboBox.SelectedIndex = 0;
+			vdcComboBox.Enabled = pce.SystemId == "SGX";
 		}
 
 		private void PCEBGViewer_FormClosed(object sender, FormClosedEventArgs e)
 		{
 
 		}
+
+		private void vdcComboBox_SelectedIndexChanged(object sender, EventArgs e)
+		{
+			Generate();
+		}
 	}
 }