CWE-ou-minkata/Sources/Plasma/PubUtilLib/plPipeline/plRenderTarget.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
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 or by snail mail at:
      Cyan Worlds, Inc.
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*==LICENSE==*/
///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  plRenderTarget.h - Header file for the plRenderTarget class              //
//  Cyan, Inc.                                                               //
//                                                                           //
//// Version History //////////////////////////////////////////////////////////
//                                                                           //
//  5.21.2001 mcn - Created.                                                 //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#ifndef _plRenderTarget_h
#define _plRenderTarget_h

#include "plPipeResReq.h"

#include "plGImage/plBitmap.h"

#define ASSERT_ABSOLUTE     hsAssert( !fProportionalViewport, "Cannot perform this on a proportional RenderTarget" );
#define ASSERT_PROPORTIONAL hsAssert( fProportionalViewport, "Cannot perform this on an absolute RenderTarget" );

//// Class Definition /////////////////////////////////////////////////////////

class hsGDeviceRef;
class plCubicRenderTarget;

class plRenderTarget : public plBitmap
{
    friend class plCubicRenderTarget;

    protected:

        UInt16      fWidth, fHeight;

        union
        {
            struct 
            {
                UInt16      fLeft, fTop, fRight, fBottom;
            } fAbsolute;
            struct 
            {
                hsScalar    fLeft, fTop, fRight, fBottom;
            } fProportional;
        } fViewport;

        hsBool      fApplyTexQuality;
        hsBool      fProportionalViewport;
        UInt8       fZDepth, fStencilDepth;
    
        plCubicRenderTarget *fParent;   

        virtual void SetKey(plKey k);

        virtual UInt32  Read( hsStream *s );
        virtual UInt32  Write( hsStream *s );
    public:

        CLASSNAME_REGISTER( plRenderTarget );
        GETINTERFACE_ANY( plRenderTarget, plBitmap );

        plRenderTarget()
        {
            fWidth = 0;
            fHeight = 0;
            fPixelSize = 0;
            fZDepth = 0;
            fStencilDepth = 0;
            fApplyTexQuality = false;
            fProportionalViewport = true;
            SetViewport( 0, 0, 1.f, 1.f );
            fFlags = 0;
            fParent = nil;

            plPipeResReq::Request();
        }

        plRenderTarget( UInt16 flags, UInt16 width, UInt16 height, UInt8 bitDepth, UInt8 zDepth = 0xff, UInt8 stencilDepth = 0xff )
        {
            fWidth = width;
            fHeight = height;
            fPixelSize = bitDepth;
            fZDepth = ( zDepth != 0xff ) ? zDepth : (bitDepth > 16 ? 24 : 16);
            fStencilDepth = ( stencilDepth != 0xff ) ? stencilDepth : 0;

            fFlags = flags;
            fParent = nil;

            hsAssert( fFlags & (kIsTexture|kIsOffscreen), "Cannot perform this on an on-screen RenderTarget" );
            fApplyTexQuality = false;
            fProportionalViewport = false;
            SetViewport( 0, 0, width, height );

            plPipeResReq::Request();
        }

        // Render-to-Screen constructor
        plRenderTarget( UInt16 flags, hsScalar left, hsScalar top, hsScalar right, hsScalar bottom, UInt8 bitDepth, UInt8 zDepth = 0xff, UInt8 stencilDepth = 0xff )
        {
            fWidth = 0; // Can't really set these, at least not yet
            fHeight = 0;
            fPixelSize = bitDepth;
            fZDepth = ( zDepth != 0xff ) ? zDepth : 16;
            fStencilDepth = ( stencilDepth != 0xff ) ? stencilDepth : 0;

            fFlags = flags;
            fParent = nil;

            hsAssert( !( fFlags & (kIsTexture|kIsOffscreen) ), "Cannot perform this on an offscreen RenderTarget" );
            fApplyTexQuality = false;
            fProportionalViewport = true;
            SetViewport( left, top, right, bottom );

            plPipeResReq::Request();
        }

        virtual ~plRenderTarget() {}

        virtual void            SetViewport( UInt16 left, UInt16 top, UInt16 right, UInt16 bottom )
        {
            ASSERT_ABSOLUTE;
            fViewport.fAbsolute.fLeft = left; 
            fViewport.fAbsolute.fTop = top; 
            fViewport.fAbsolute.fRight = right; 
            fViewport.fAbsolute.fBottom = bottom;
        }

        virtual void            SetViewport( hsScalar left, hsScalar top, hsScalar right, hsScalar bottom )
        {
            ASSERT_PROPORTIONAL;
            fViewport.fProportional.fLeft = left; 
            fViewport.fProportional.fTop = top; 
            fViewport.fProportional.fRight = right; 
            fViewport.fProportional.fBottom = bottom;
        }

        UInt16  GetWidth( void ) { return fWidth; }
        UInt16  GetHeight( void ) { return fHeight; }
        UInt8   GetZDepth( void ) { return fZDepth; }
        UInt8   GetStencilDepth( void ) { return fStencilDepth; }

        UInt16      GetVPLeft( void )   { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fLeft; }
        UInt16      GetVPTop( void )    { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fTop; }
        UInt16      GetVPRight( void )  { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fRight; }
        UInt16      GetVPBottom( void ) { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fBottom; }

        hsScalar    GetVPLeftProp( void )   { ASSERT_PROPORTIONAL; return fViewport.fProportional.fLeft; }
        hsScalar    GetVPTopProp( void )    { ASSERT_PROPORTIONAL; return fViewport.fProportional.fTop; }
        hsScalar    GetVPRightProp( void )  { ASSERT_PROPORTIONAL; return fViewport.fProportional.fRight; }
        hsScalar    GetVPBottomProp( void ) { ASSERT_PROPORTIONAL; return fViewport.fProportional.fBottom; }

        hsBool      ViewIsProportional( void ) const { return fProportionalViewport; }

        plCubicRenderTarget *GetParent( void ) const { return fParent; }

        virtual UInt32  GetTotalSize( void ) const { return fWidth * fHeight * ( fPixelSize >> 3 ); }

        virtual hsBool MsgReceive(plMessage* msg);

        virtual void SetVisRegionName(char *name){} // override to set vis region names for anyone who cares
};


#endif // _plRenderTarget_h