95 lines
4.4 KiB
C
95 lines
4.4 KiB
C
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/*
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** Command & Conquer Renegade(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* $Archive:: /Commando/Code/wwlib/blitter.h $*
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* *
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* $Author:: Jani_p $*
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* *
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* $Modtime:: 5/04/01 7:48p $*
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* *
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* $Revision:: 3 $*
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#if _MSC_VER >= 1000
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#pragma once
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#endif // _MSC_VER >= 1000
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#ifndef BLITTER_H
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#define BLITTER_H
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/*
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** This is the interface class to the blitter object. The blitter object handles moving
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** pixels. That's all it does. For every type of pixel translation, there should be a
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** blitter object created that supports this interface. The blit blitting routines will
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** call the appropriate method as the pixel are being processed.
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*/
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class Blitter {
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public:
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/*
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** Blits from source to dest (starts at first pixel). This is the preferred
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** method of pixel blitting and this routine will be called 99% of the time under
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** normal circumstances.
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*/
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virtual void BlitForward(void * dest, void const * source, int length) const = 0;
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/*
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** Copies the pixel in reverse order. This only required if the source and dest
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** pixel regions overlap in a certain way. This routine will rarely be called.
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*/
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virtual void BlitBackward(void * dest, void const * source, int length) const = 0;
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/*
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** This routine calls the appropriate blit routine. A proper overlap check cannot
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** be performed by this routine because the pixel size information is not present.
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** as such, you should call the appropriate blit routine rather than letting this
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** routine perform the check and call.
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*/
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void Blit(void * dest, void const * source, int length) const {if (dest < source) BlitBackward(dest, source, length); else BlitForward(dest, source, length);}
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};
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/*
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** This is the blitter object interface for dealing with RLE compressed pixel data. For
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** every type of RLE compressed blitter operation desired, there would be an object created
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** that supports this interface.
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*/
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class RLEBlitter {
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public:
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/*
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** Blits from the RLE compressed source to the destination buffer. An optional
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** leading pixel skip value can be supplied when a sub-section of an RLE
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** compressed pixel sequence is desired. This is necessary because RLE decompression
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** must begin at the start of the compressed data sequence.
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*/
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virtual void Blit(void * dest, void const * source, int length, int leadskip=0) const = 0;
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};
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#endif
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