mirror of
https://github.com/jmarshall23/CnC_Remastered_Collection.git
synced 2026-08-11 23:50:51 +02:00
Justin Marshall
556 lines
27 KiB
C++
556 lines
27 KiB
C++
//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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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 A S S O C I A T E S **
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***************************************************************************
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* *
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* Project Name : Westwood 32 bit Library *
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* *
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* File Name : GBUFFER.CPP *
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* *
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* Programmer : Phil W. Gorrow *
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* *
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* Start Date : May 3, 1994 *
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* *
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* Last Update : October 9, 1995 [] *
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* *
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*-------------------------------------------------------------------------*
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* Functions: *
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* VVPC::VirtualViewPort -- Default constructor for a virtual viewport *
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* VVPC:~VirtualViewPortClass -- Destructor for a virtual viewport *
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* VVPC::Clear -- Clears a graphic page to correct color *
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* VBC::VideoBufferClass -- Lowlevel constructor for video buffer class *
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* GVPC::Change -- Changes position and size of a Graphic View Port *
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* VVPC::Change -- Changes position and size of a Video View Port *
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* Set_Logic_Page -- Sets LogicPage to new buffer *
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* GBC::DD_Init -- Inits a direct draw surface for a GBC *
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* GBC::Init -- Core function responsible for initing a GBC *
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* GBC::Lock -- Locks a Direct Draw Surface *
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* GBC::Unlock -- Unlocks a direct draw surface *
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* GBC::GraphicBufferClass -- Default constructor (requires explicit init)*
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef GBUFFER_H
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#include "gbuffer.h"
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#include "misc.h"
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#endif
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//#pragma inline
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int TotalLocks;
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BOOL AllowHardwareBlitFills = TRUE;
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//int CacheAllowed;
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/*=========================================================================*/
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/* The following PRIVATE functions are in this file: */
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/*=========================================================================*/
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/*= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =*/
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/***************************************************************************
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* GVPC::GRAPHICVIEWPORTCLASS -- Constructor for basic view port class *
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* m *
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* INPUT: GraphicBufferClass * gbuffer - buffer to attach to *
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* int x - x offset into buffer *
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* int y - y offset into buffer *
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* int w - view port width in pixels *
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* int h - view port height in pixels *
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* *
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* OUTPUT: Constructors may not have a return value *
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* *
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* HISTORY: *
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* 05/09/1994 PWG : Created. *
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*=========================================================================*/
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GraphicViewPortClass::GraphicViewPortClass(GraphicBufferClass *gbuffer, int x, int y, int w, int h) :
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LockCount(0),
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GraphicBuff(NULL)
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{
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Attach(gbuffer, x, y, w, h);
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}
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/***************************************************************************
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* GVPC::GRAPHICVIEWPORTCLASS -- Default constructor for view port class *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 05/09/1994 PWG : Created. *
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*=========================================================================*/
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GraphicViewPortClass::GraphicViewPortClass(void)
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{
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}
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/***************************************************************************
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* GVPC::~GRAPHICVIEWPORTCLASS -- Destructor for GraphicViewPortClass *
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* *
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* INPUT: none *
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* *
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* OUTPUT: A destructor may not return a value. *
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* *
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* HISTORY: *
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* 05/10/1994 PWG : Created. *
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*=========================================================================*/
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GraphicViewPortClass::~GraphicViewPortClass(void)
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{
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Offset = 0;
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Width = 0; // Record width of Buffer
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Height = 0; // Record height of Buffer
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XAdd = 0; // Record XAdd of Buffer
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XPos = 0; // Record XPos of Buffer
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YPos = 0; // Record YPos of Buffer
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Pitch = 0; // Record width of Buffer
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IsDirectDraw = FALSE;
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LockCount = 0;
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GraphicBuff = NULL;
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}
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/***************************************************************************
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* GVPC::ATTACH -- Attaches a viewport to a buffer class *
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* *
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* INPUT: GraphicBufferClass *g_buff - pointer to gbuff to attach to *
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* int x - x position to attach to *
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* int y - y position to attach to *
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* int w - width of the view port *
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* int h - height of the view port *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 05/10/1994 PWG : Created. *
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*=========================================================================*/
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void GraphicViewPortClass::Attach(GraphicBufferClass *gbuffer, int x, int y, int w, int h)
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{
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/*======================================================================*/
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/* Can not attach a Graphic View Port if it is actually the physical */
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/* representation of a Graphic Buffer. */
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/*======================================================================*/
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if (this == Get_Graphic_Buffer()) {
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return;
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}
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/*======================================================================*/
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/* Verify that the x and y coordinates are valid and placed within the */
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/* physical buffer. */
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/*======================================================================*/
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if (x < 0) // you cannot place view port off
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x = 0; // the left edge of physical buf
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if (x >= gbuffer->Get_Width()) // you cannot place left edge off
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x = gbuffer->Get_Width() - 1; // the right edge of physical buf
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if (y < 0) // you cannot place view port off
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y = 0; // the top edge of physical buf
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if (y >= gbuffer->Get_Height()) // you cannot place view port off
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y = gbuffer->Get_Height() - 1; // bottom edge of physical buf
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/*======================================================================*/
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/* Adjust the width and height of necessary */
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/*======================================================================*/
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if (x + w > gbuffer->Get_Width()) // if the x plus width is larger
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w = gbuffer->Get_Width() - x; // than physical, fix width
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if (y + h > gbuffer->Get_Height()) // if the y plus height is larger
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h = gbuffer->Get_Height() - y; // than physical, fix height
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/*======================================================================*/
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/* Get a pointer to the top left edge of the buffer. */
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/*======================================================================*/
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Offset = gbuffer->Get_Offset() + ((gbuffer->Get_Width()+gbuffer->Get_Pitch()) * y * 4) + (x * 4);
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/*======================================================================*/
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/* Copy over all of the variables that we need to store. */
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/*======================================================================*/
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XPos = x;
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YPos = y;
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XAdd = gbuffer->Get_Width() - w;
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Width = w;
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Height = h;
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Pitch = gbuffer->Get_Pitch();
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GraphicBuff = gbuffer;
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IsDirectDraw= gbuffer->IsDirectDraw;
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}
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/***************************************************************************
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* GVPC::CHANGE -- Changes position and size of a Graphic View Port *
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* *
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* INPUT: int the new x pixel position of the graphic view port *
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* int the new y pixel position of the graphic view port *
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* int the new width of the viewport in pixels *
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* int the new height of the viewport in pixels *
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* *
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* OUTPUT: BOOL whether the Graphic View Port could be sucessfully *
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* resized. *
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* *
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* WARNINGS: You may not resize a Graphic View Port which is derived *
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* from a Graphic View Port Buffer, *
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* *
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* HISTORY: *
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* 09/14/1994 SKB : Created. *
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*=========================================================================*/
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BOOL GraphicViewPortClass::Change(int x, int y, int w, int h)
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{
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/*======================================================================*/
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/* Can not change a Graphic View Port if it is actually the physical */
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/* representation of a Graphic Buffer. */
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/*======================================================================*/
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if (this == Get_Graphic_Buffer()) {
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return(FALSE);
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}
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/*======================================================================*/
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/* Since there is no allocated information, just re-attach it to the */
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/* existing graphic buffer as if we were creating the */
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/* GraphicViewPort. */
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/*======================================================================*/
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Attach(Get_Graphic_Buffer(), x, y, w, h);
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return(TRUE);
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}
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/***************************************************************************
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* GBC::DD_INIT -- Inits a direct draw surface for a GBC *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 10/09/1995 : Created. *
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*=========================================================================*/
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void GraphicBufferClass::DD_Init(GBC_Enum flags)
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{
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rawCpuBuffer = new unsigned char[Width * Height * 4];
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Allocated = FALSE; // even if system alloced, dont flag it cuz
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// we dont want it freed.
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IsDirectDraw = TRUE; // flag it as a video surface
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Offset = NOT_LOCKED; // flag it as unavailable for reading or writing
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LockCount = 0; // surface is not locked
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}
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/***************************************************************************
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* GBC::INIT -- Core function responsible for initing a GBC *
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* *
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* INPUT: int - the width in pixels of the GraphicBufferClass *
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* int - the heigh in pixels of the GraphicBufferClass *
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* void * - pointer to user supplied buffer (system will *
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* allocate space if buffer is NULL) *
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* long - size of the user provided buffer *
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* GBC_Enum - flags if this is defined as a direct draw *
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* surface *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 10/09/1995 : Created. *
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*=========================================================================*/
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void GraphicBufferClass::Init(int w, int h, void *buffer, long size, GBC_Enum flags)
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{
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Size = size; // find size of physical buffer
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Width = w; // Record width of Buffer
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Height = h; // Record height of Buffer
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rawCpuBuffer = nullptr;
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//
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// If the surface we are creating is a direct draw object then
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// we need to do a direct draw init. Otherwise we will do
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// a normal alloc.
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//
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if (flags & (GBC_VIDEOMEM | GBC_VISIBLE)) {
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DD_Init(flags);
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} else {
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if (buffer) { // if buffer is specified
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Buffer= (BYTE *)buffer; // point to it and mark
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Allocated = FALSE; // it as user allocated
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} else {
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if (!Size) Size = w*h*4;
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Buffer = new BYTE[Size]; // otherwise allocate it and
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Allocated = TRUE; // mark it system alloced
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}
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Offset = (INT_PTR)Buffer; // Get offset to the buffer
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IsDirectDraw = FALSE;
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}
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Pitch = 0; // Record width of Buffer
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XAdd = 0; // Record XAdd of Buffer
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XPos = 0; // Record XPos of Buffer
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YPos = 0; // Record YPos of Buffer
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GraphicBuff = this; // Get a pointer to our self
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}
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/***********************************************************************************************
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* GBC::Un_Init -- releases the video surface belonging to this gbuffer *
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* *
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* *
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* *
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* INPUT: Nothing *
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* *
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* OUTPUT: Nothing *
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* *
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* WARNINGS: None *
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* *
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* HISTORY: *
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* 6/6/96 12:44PM ST : Created *
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*=============================================================================================*/
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void GraphicBufferClass::Un_Init (void)
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{
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if ( IsDirectDraw ){
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delete rawCpuBuffer;
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rawCpuBuffer = nullptr;
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}
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}
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/***************************************************************************
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* GBC::GRAPHICBUFFERCLASS -- Default constructor (requires explicit init) *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 10/09/1995 : Created. *
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*=========================================================================*/
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GraphicBufferClass::GraphicBufferClass(void)
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{
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GraphicBuff = this; // Get a pointer to our self
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rawCpuBuffer = NULL;
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}
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/***************************************************************************
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* GBC::GRAPHICBUFFERCLASS -- Constructor for fixed size buffers *
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* *
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* INPUT: long size - size of the buffer to create *
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* int w - width of buffer in pixels (default = 320) *
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* int h - height of buffer in pixels (default = 200) *
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* void *buffer - a pointer to the buffer if any (optional) *
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* *
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* OUTPUT: *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 05/13/1994 PWG : Created. *
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*=========================================================================*/
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GraphicBufferClass::GraphicBufferClass(int w, int h, void *buffer, long size)
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{
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Init(w, h, buffer, size, GBC_NONE);
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}
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/*=========================================================================*
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* GBC::GRAPHICBUFFERCLASS -- inline constructor for GraphicBufferClass *
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* *
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* INPUT: int w - width of buffer in pixels (default = 320) *
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* int h - height of buffer in pixels (default = 200) *
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* void *buffer - a pointer to the buffer if any (optional) *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 05/03/1994 PWG : Created. *
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*=========================================================================*/
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GraphicBufferClass::GraphicBufferClass(int w, int h, void *buffer)
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{
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Init(w, h, buffer, w * h, GBC_NONE);
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}
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/*====================================================================================*
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* GBC::GRAPHICBUFFERCLASS -- contructor for GraphicsBufferClass with special flags *
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* *
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* INPUT: int w - width of buffer in pixels (default = 320) *
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* int h - height of buffer in pixels (default = 200) *
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* void *buffer - unused *
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* unsigned flags - flags for creation of special buffer types *
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* GBC_VISIBLE - buffer is a visible screen surface *
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* GBC_VIDEOMEM - buffer resides in video memory *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 09-21-95 04:19pm ST : Created *
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*====================================================================================*/
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GraphicBufferClass::GraphicBufferClass(int w, int h, GBC_Enum flags)
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{
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Init(w, h, NULL, w * h, flags);
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}
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/*=========================================================================*
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* GBC::~GRAPHICBUFFERCLASS -- Destructor for the graphic buffer class *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 05/03/1994 PWG : Created. *
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*=========================================================================*/
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GraphicBufferClass::~GraphicBufferClass()
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{
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//
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// Release the direct draw surface if it exists
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//
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Un_Init();
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}
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/***************************************************************************
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* SET_LOGIC_PAGE -- Sets LogicPage to new buffer *
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* *
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* INPUT: GraphicBufferClass * the buffer we are going to set *
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* *
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* OUTPUT: GraphicBufferClass * the previous buffer type *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 02/23/1995 PWG : Created. *
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*=========================================================================*/
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GraphicViewPortClass *Set_Logic_Page(GraphicViewPortClass *ptr)
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{
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GraphicViewPortClass *old = LogicPage;
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LogicPage = ptr;
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return(old);
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}
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/***************************************************************************
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* SET_LOGIC_PAGE -- Sets LogicPage to new buffer *
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* *
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* INPUT: GraphicBufferClass & the buffer we are going to set *
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* *
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* OUTPUT: GraphicBufferClass * the previous buffer type *
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* *
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* WARNINGS: *
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* *
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* HISTORY: *
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* 02/23/1995 PWG : Created. *
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*=========================================================================*/
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GraphicViewPortClass *Set_Logic_Page(GraphicViewPortClass &ptr)
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{
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GraphicViewPortClass *old = LogicPage;
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LogicPage = &ptr;
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return(old);
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}
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/***************************************************************************
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* GBC::LOCK -- Locks a Direct Draw Surface *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 10/09/1995 : Created. *
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* 10/09/1995 : Code stolen from Steve Tall *
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*=========================================================================*/
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extern void Colour_Debug (int call_number);
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extern bool GameInFocus;
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extern void Block_Mouse(GraphicBufferClass *buffer);
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extern void Unblock_Mouse(GraphicBufferClass *buffer);
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BOOL GraphicBufferClass::Lock(void)
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{
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HRESULT result;
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int restore_attempts=0;
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//
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// If its not a direct draw surface then the lock is always sucessful.
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//
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if (!IsDirectDraw) return(TRUE);
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/*
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** If the video surface pointer is null then return
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*/
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if (!rawCpuBuffer) return (FALSE);
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/*
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** If we dont have focus then return failure
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*/
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if (!GameInFocus) return (FALSE);
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Block_Mouse(this);
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//
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// If surface is already locked then inc the lock count and return true
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//
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if (LockCount){
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LockCount++;
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Unblock_Mouse(this);
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return(TRUE);
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}
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Offset = (INT_PTR)backbuffer_data_raw;
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//Pitch = Width;
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LockCount++; // increment count so we can track if
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TotalLocks++; // Total number of times we have locked (for debugging)
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//Colour_Debug(1);
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Unblock_Mouse(this);
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return (TRUE); //Return false because we couldnt lock or restore the surface
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}
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/***************************************************************************
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* GBC::UNLOCK -- Unlocks a direct draw surface *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* HISTORY: *
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* 10/09/1995 : Created. *
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* 10/09/1995 : Code stolen from Steve Tall *
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*=========================================================================*/
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BOOL GraphicBufferClass::Unlock(void)
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{
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//Video_Set_Data((unsigned char *)Get_Graphic_Buffer()->GetMemoryBuffer(), Width, Height);
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//
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// If there is no lock count or this is not a direct draw surface
|
|
// then just return true as there is no harm done.
|
|
//
|
|
if (!(LockCount && IsDirectDraw)) {
|
|
return(TRUE);
|
|
}
|
|
|
|
//
|
|
// If lock count is directly equal to one then we actually need to
|
|
// unlock so just give it a shot.
|
|
//
|
|
if (LockCount == 1) {
|
|
Block_Mouse(this);
|
|
Offset = NOT_LOCKED;
|
|
LockCount--;
|
|
Unblock_Mouse(this);
|
|
return(TRUE);
|
|
}
|
|
//Colour_Debug (0);
|
|
LockCount--;
|
|
return(TRUE);
|
|
}
|