CWE-ou-minkata/Sources/Plasma/PubUtilLib/plPipeline/plRenderTarget.h

/*==LICENSE==*

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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_t      fWidth, fHeight;

        union
        {
            struct 
            {
                uint16_t      fLeft, fTop, fRight, fBottom;
            } fAbsolute;
            struct 
            {
                float    fLeft, fTop, fRight, fBottom;
            } fProportional;
        } fViewport;

        bool        fApplyTexQuality;
        bool        fProportionalViewport;
        uint8_t     fZDepth, fStencilDepth;

        plCubicRenderTarget* fParent;

        virtual void SetKey(plKey k);

        virtual uint32_t  Read( hsStream *s );
        virtual uint32_t  Write( hsStream *s );
    public:

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

        plRenderTarget()
            : fWidth(0), fHeight(0), fZDepth(0), fStencilDepth(0), fApplyTexQuality(false),
              fProportionalViewport(true), fParent(nullptr)
        {
            fFlags = 0;
            fPixelSize = 0;
            SetViewport( 0, 0, 1.f, 1.f );
            plPipeResReq::Request();
        }

        plRenderTarget( uint16_t flags, uint16_t width, uint16_t height, uint8_t bitDepth, uint8_t zDepth = 0xff, uint8_t 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_t flags, float left, float top, float right, float bottom, uint8_t bitDepth, uint8_t zDepth = 0xff, uint8_t 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_t left, uint16_t top, uint16_t right, uint16_t bottom )
        {
            ASSERT_ABSOLUTE;
            fViewport.fAbsolute.fLeft = left; 
            fViewport.fAbsolute.fTop = top; 
            fViewport.fAbsolute.fRight = right; 
            fViewport.fAbsolute.fBottom = bottom;
        }

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

        uint16_t  GetWidth( void ) const { return fWidth; }
        uint16_t  GetHeight( void ) const { return fHeight; }
        uint8_t   GetZDepth( void ) { return fZDepth; }
        uint8_t   GetStencilDepth( void ) { return fStencilDepth; }

        uint16_t      GetVPLeft( void )   { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fLeft; }
        uint16_t      GetVPTop( void )    { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fTop; }
        uint16_t      GetVPRight( void )  { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fRight; }
        uint16_t      GetVPBottom( void ) { ASSERT_ABSOLUTE; return fViewport.fAbsolute.fBottom; }

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

        bool        ViewIsProportional( void ) const { return fProportionalViewport; }

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

        virtual uint32_t  GetTotalSize( void ) const { return fWidth * fHeight * ( fPixelSize >> 3 ); }

        virtual bool MsgReceive(plMessage* msg);

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


#endif // _plRenderTarget_h