CWE-ou-minkata/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plSurface/plShader.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

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, either version 3 of the License, or
(at your option) any later version.

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 for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/

#ifndef plShader_inc
#define plShader_inc

#include "../pnKeyedObject/hsKeyedObject.h"
#include "hsTemplates.h"
#include "hsGeometry3.h"
#include "hsMatrix44.h"
#include "plShaderTable.h"

class hsStream;
class hsResMgr;
class hsMatrix;
struct hsColorRGBA;
class hsGDeviceRef;

class plFloat4
{
public:
	float	f[4];
};

class plFloat44
{
public:
	float	m[4][4];
};

class plFloat34
{
public:
	float	m[3][4];
};

class plShaderConst
{
public:
	union
	{
		struct {
			float		r;
			float		g;
			float		b;
			float		a;
		};
		struct {
			float		x;
			float		y;
			float		z;
			float		w;
		};
		struct {
			float		fX;
			float		fY;
			float		fZ;
			float		fW;
		};
		float			fArray[4];
	};
	
	float& operator[](int i) { return fArray[i]; }

	void Read(hsStream* s);
	void Write(hsStream* s);
};

class plShaderDecl;

class plPipeConst
{
public:
	enum Type
	{
		kLocalToNDC,			// 4x4
		kCameraToNDC,			// 4x4
		kWorldToNDC,			// 4x4
		kLocalToWorld,			// 3x4
		kWorldToLocal,			// 3x4
		kWorldToCamera,			// 3x4
		kCameraToWorld,			// 3x4
		kLocalToCamera,			// 3x4
		kCameraToLocal,			// 3x4
		kCamPosWorld,			// 1x4
		kCamPosLocal,			// 1x4
		kObjPosWorld,			// 1x4
		kTex3x4_0,				// 3x4, stage 0
		kTex3x4_1,				// 3x4, stage 1
		kTex3x4_2,				// 3x4, stage 2
		kTex3x4_3,				// 3x4, stage 3
		kTex3x4_4,				// 3x4, stage 4
		kTex3x4_5,				// 3x4, stage 5
		kTex3x4_6,				// 3x4, stage 6
		kTex3x4_7,				// 3x4, stage 7
		kTex2x4_0,				// 2x4, stage 0
		kTex2x4_1,				// 2x4, stage 1
		kTex2x4_2,				// 2x4, stage 2
		kTex2x4_3,				// 2x4, stage 3
		kTex2x4_4,				// 2x4, stage 4
		kTex2x4_5,				// 2x4, stage 5
		kTex2x4_6,				// 2x4, stage 6
		kTex2x4_7,				// 2x4, stage 7
		kTex1x4_0,				// 1x4, stage 0
		kTex1x4_1,				// 1x4, stage 1
		kTex1x4_2,				// 1x4, stage 2
		kTex1x4_3,				// 1x4, stage 3
		kTex1x4_4,				// 1x4, stage 4
		kTex1x4_5,				// 1x4, stage 5
		kTex1x4_6,				// 1x4, stage 6
		kTex1x4_7,				// 1x4, stage 7
		kDirLight1,				// 2x4, dir, then color
		kDirLight2,				// 4x4, kDirLight1 x 2
		kDirLight3,				// 6x4,	kDirLight1 x 3
		kDirLight4,				// 8x4, kDirLight1 x 4
		kPointLight1,			// 3x4, pos, dir, distAtten (spotAtten.xy dropped on end of pos.w/dir.w)
		kPointLight2,			// 6x4, kPointLight1 x 2
		kPointLight3,			// 9x4, kPointLight1 x 3
		kPointLight4,			// 12x4, kPointLight1 x4
		kLayAmbient,			// 4x4
		kLayRuntime,			// 4x4 (r,g,b,a)
		kLaySpecular,			// 4x4 (but alpha is ignored).
		kFogSet,				// 1x4 = (-FogMax, 1.f/(FogMin - FogMax), density, 1)
		kColorFilter,			// 1x4 color filter currently applied to entire scene.

		kMaxType
	};
public:

	plPipeConst() {}
	plPipeConst(Type t, UInt16 r) : fType(t), fReg(r) {}

	Type		fType;
	UInt16				fReg;
};

typedef plPipeConst::Type plPipeConstType;

class plShader : public hsKeyedObject
{
public:
	enum {
		kValidated			= 0x1,
		kInvalid			= 0x2,
		kIsPixel			= 0x4,
		kShaderNotFound		= 0x8,
		kShaderError		= 0x10,
		kShaderUnsupported	= 0x20
	};
protected:
	mutable UInt32				fFlags;

	hsTArray<plShaderConst>		fConsts;

	mutable hsGDeviceRef*		fDeviceRef;

	const plShaderDecl*			fDecl;

	UInt8						fInput;
	UInt8						fOutput;

	hsTArray<plPipeConst>		fPipeConsts;

public:
	plShader();
	virtual ~plShader();

	CLASSNAME_REGISTER( plShader );
	GETINTERFACE_ANY( plShader, hsKeyedObject );

	// Read and write
	virtual void			Read(hsStream* s, hsResMgr* mgr);
	virtual void			Write(hsStream* s, hsResMgr* mgr);

	void					SetNumConsts(int cnt) { fConsts.SetCount(cnt); }
	UInt32					GetNumConsts() const { return fConsts.GetCount(); }
	plShaderConst&			GetConst(int i) { return fConsts[i]; }
	const plShaderConst&	GetConst(int i) const { return fConsts[i]; }
	void					SetConst(int i, const plShaderConst& c) { fConsts[i] = c; }

	plFloat44				GetMatrix(int i) const; // Will untranspose
	plFloat44				GetMatrix3(int i) const; // Will untranspose
	hsMatrix44				GetMatrix44(int i) const;
	hsMatrix44				GetMatrix34(int i) const;
	hsMatrix44				GetMatrix24(int i) const;
	hsColorRGBA				GetColor(int i) const;
	hsPoint3				GetPosition(int i) const;
	hsVector3				GetVector(int i) const;
	void					GetVector(int i, hsScalar& x, hsScalar& y, hsScalar& z, hsScalar& w) const;
	hsScalar				GetFloat(int i, int chan) const;
	const float* const		GetFloat4(int i) const;

	void					SetMatrix(int i, const plFloat44& xfm); // Will transpose
	void					SetMatrix3(int i, const plFloat44& xfm); // Will transpose
	void					SetMatrix44(int i, const hsMatrix44& xfm);
	void					SetMatrix34(int i, const hsMatrix44& xfm);
	void					SetMatrix24(int i, const hsMatrix44& xfm);
	void					SetColor(int i, const hsColorRGBA& col);
	void					SetVector(int i, const hsScalarTriple& vec); /* Doesn't touch .fW */
	void					SetVectorW(int i, const hsScalarTriple& vec, hsScalar w=1.f) { SetVector(i, vec.fX, vec.fY, vec.fZ, w); }
	void					SetVector(int i, hsScalar x, hsScalar y, hsScalar z, hsScalar w);
	void					SetFloat(int i, int chan, float v);
	void					SetFloat4(int i, const float* const f);

	const plShaderDecl*		GetDecl() const { return fDecl; }

	void					SetDecl(const plShaderDecl* p); // will reference (pointer copy)
	void					SetDecl(plShaderID::ID id);

	hsBool					IsValid() const { return !(fFlags & kInvalid); }
	void					Invalidate() const { fFlags |= kInvalid; }

	hsBool					IsPixelShader() const { return 0 != (fFlags & kIsPixel); }
	hsBool					IsVertexShader() const { return !IsPixelShader(); }
	void					SetIsPixelShader(hsBool on) { if(on)fFlags |= kIsPixel; else fFlags &= ~kIsPixel; }

	// These are only for use by the pipeline.
	hsGDeviceRef*			GetDeviceRef() const { return fDeviceRef; }
	void					SetDeviceRef(hsGDeviceRef* ref) const;

	void*					GetConstBasePtr() const { return fConsts.GetCount() ? &fConsts[0] : nil; }

	void					CopyConsts(const plShader* src) { fConsts = src->fConsts; }

	void					SetInputFormat(UInt8 format) { fInput = format; }
	void					SetOutputFormat(UInt8 format) { fOutput = format; }

	UInt8					GetInputFormat() const { return fInput; }
	UInt8					GetOutputFormat() const { return fOutput; }

	UInt32					GetNumPipeConsts() const { return fPipeConsts.GetCount(); }
	const plPipeConst&		GetPipeConst(int i) const { return fPipeConsts[i]; }
	plPipeConst::Type		GetPipeConstType(int i) const { return fPipeConsts[i].fType; }
	UInt16					GetPipeConstReg(int i) const { return fPipeConsts[i].fReg; }

	void					SetNumPipeConsts(int n);
	void					SetPipeConst(int i, const plPipeConst& c) { fPipeConsts[i] = c; }
	void					SetPipeConst(int i, plPipeConstType t, UInt16 r) { fPipeConsts[i].fType = t; fPipeConsts[i].fReg = r; }
	void					SetPipeConstType(int i, plPipeConstType t) { fPipeConsts[i].fType = t; }
	void					SetPipeConstReg(int i, UInt16 r) { fPipeConsts[i].fReg = r; }
};

#endif // plShader_inc