Adding software rendering plugin. This is aimed at accurate emulation, not fast. Its more like a debugging tool than actually useful.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4407 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoSoftware/Src/PixelEngine.h

@@ -0,0 +1,155 @@
+// Copyright (C) 2003-2009 Dolphin Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+#ifndef _PIXELENGINE_H
+#define _PIXELENGINE_H
+
+#include "Common.h"
+#include "pluginspecs_video.h"
+#include "VideoCommon.h"
+class PointerWrap;
+
+namespace PixelEngine
+{
+    // internal hardware addresses
+    enum
+    {
+	    PE_ZCONF         = 0x000, // Z Config
+	    PE_ALPHACONF     = 0x002, // Alpha Config
+	    PE_DSTALPHACONF  = 0x004, // Destination Alpha Config
+	    PE_ALPHAMODE     = 0x006, // Alpha Mode Config
+	    PE_ALPHAREAD     = 0x008, // Alpha Read
+	    PE_CTRL_REGISTER = 0x00a, // Control
+	    PE_TOKEN_REG     = 0x00e, // Token
+	    PE_BBOX_LEFT	 = 0x010, // Flip Left
+	    PE_BBOX_RIGHT	 = 0x012, // Flip Right
+	    PE_BBOX_TOP		 = 0x014, // Flip Top
+	    PE_BBOX_BOTTOM	 = 0x016, // Flip Bottom
+    };
+
+    union UPEZConfReg
+    {
+	    u16 Hex;
+	    struct 
+	    {
+		    u16 ZCompEnable	    : 1; // Z Comparator Enable
+		    u16 Function		: 3;
+		    u16 ZUpdEnable		: 1;
+		    u16				    : 11;
+	    };
+    };
+
+    union UPEAlphaConfReg
+    {
+	    u16 Hex;
+	    struct 
+	    {
+		    u16 BMMath			: 1; // GX_BM_BLEND || GX_BM_SUBSTRACT
+		    u16 BMLogic		    : 1; // GX_BM_LOGIC
+		    u16 Dither			: 1;
+		    u16 ColorUpdEnable	: 1;
+		    u16 AlphaUpdEnable	: 1;
+		    u16 DstFactor		: 3;
+		    u16 SrcFactor		: 3;
+		    u16 Substract		: 1; // Additive mode by default
+		    u16 BlendOperator	: 4;
+	    };
+    };
+
+    union UPEDstAlphaConfReg
+    {
+	    u16 Hex;
+	    struct 
+	    {
+		    u16 DstAlpha		: 8;
+		    u16 Enable			: 1;
+		    u16				    : 7;
+	    };
+    };
+
+    union UPEAlphaModeConfReg
+    {
+	    u16 Hex;
+	    struct 
+	    {
+		    u16 Threshold		: 8;
+		    u16 CompareMode	    : 8;
+	    };
+    };
+
+    union UPEAlphaReadReg
+    {
+	    u16 Hex;
+	    struct 
+	    {
+		    u16 ReadMode	: 3;
+		    u16				: 13;
+	    };
+    };
+
+     union UPECtrlReg
+    {
+	    struct 
+	    {
+		    u16 PETokenEnable	:	1;
+		    u16 PEFinishEnable	:	1;
+		    u16 PEToken		:	1; // write only
+		    u16 PEFinish		:	1; // write only
+		    u16				:	12;
+	    };
+	    u16 Hex;
+	    UPECtrlReg() {Hex = 0; }
+	    UPECtrlReg(u16 _hex) {Hex = _hex; }
+    };
+
+    struct PEReg
+    {
+        UPEZConfReg zconf;
+        UPEAlphaConfReg alphaConf;
+        UPEDstAlphaConfReg dstAlpha;
+        UPEAlphaModeConfReg alphaMode;
+        UPEAlphaReadReg alphaRead;
+        UPECtrlReg ctrl;
+        u16 unk0;
+        u16 token;
+        u16 boxLeft;
+        u16 boxRight;
+        u16 boxTop;
+        u16 boxBottom;
+    };
+
+    extern PEReg pereg;
+
+    void Init();
+    void DoState(PointerWrap &p);
+
+    // Read
+    void Read16(u16& _uReturnValue, const u32 _iAddress);
+
+    // Write
+    void Write16(const u16 _iValue, const u32 _iAddress);
+    void Write32(const u32 _iValue, const u32 _iAddress);
+
+    // gfx plugin support
+    void SetToken(const u16 _token, const int _bSetTokenAcknowledge);
+    void SetFinish(void);
+    bool AllowIdleSkipping();    
+
+} // end of namespace PixelEngine
+
+#endif
+
+