mirror of
https://github.com/ZDoom/qzdoom.git
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dc5a5419fc
I have no idea why they were even in there, as they intentionally circumvented all GC related features - they declared themselves fixed if prone to getting collected, they all used OF_YesReallyDelete when destroying themselves and they never used any of the object creation or RTTI features, aside from a single assert in V_Init2. Essentially they were a drag on the system and OF_YesReallyDelete was effectively added just to deal with the canvases which were DObjects but not supposed to behave like them in the first place.
1330 lines
32 KiB
C++
1330 lines
32 KiB
C++
/*
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** fb_ddraw.cpp
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** Code to let ZDoom use DirectDraw 3
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2008 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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// HEADER FILES ------------------------------------------------------------
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#define DIRECTDRAW_VERSION 0x0300
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <ddraw.h>
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#include <stdio.h>
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#include "doomtype.h"
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#include "c_dispatch.h"
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#include "templates.h"
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#include "i_system.h"
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#include "i_video.h"
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#include "v_video.h"
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#include "v_pfx.h"
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#include "stats.h"
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#include "doomerrors.h"
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#include "win32iface.h"
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#include "win32swiface.h"
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#include "v_palette.h"
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// MACROS ------------------------------------------------------------------
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// TYPES -------------------------------------------------------------------
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// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
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// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
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void DoBlending (const PalEntry *from, PalEntry *to, int count, int r, int g, int b, int a);
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// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
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// EXTERNAL DATA DECLARATIONS ----------------------------------------------
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extern HWND Window;
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extern IVideo *Video;
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extern BOOL AppActive;
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extern int SessionState;
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extern bool VidResizing;
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EXTERN_CVAR (Bool, fullscreen)
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EXTERN_CVAR (Float, Gamma)
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EXTERN_CVAR (Int, vid_refreshrate)
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extern IDirectDraw2 *DDraw;
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// PRIVATE DATA DEFINITIONS ------------------------------------------------
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// PUBLIC DATA DEFINITIONS -------------------------------------------------
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CVAR (Bool, vid_palettehack, false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
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CVAR (Bool, vid_attachedsurfaces, false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
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CVAR (Bool, vid_noblitter, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
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CVAR (Int, vid_displaybits, 8, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
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CUSTOM_CVAR (Float, rgamma, 1.f, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
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{
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if (screen != NULL)
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{
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screen->SetGamma (Gamma);
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}
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}
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CUSTOM_CVAR (Float, ggamma, 1.f, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
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{
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if (screen != NULL)
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{
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screen->SetGamma (Gamma);
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}
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}
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CUSTOM_CVAR (Float, bgamma, 1.f, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
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{
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if (screen != NULL)
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{
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screen->SetGamma (Gamma);
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}
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}
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cycle_t BlitCycles;
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// CODE --------------------------------------------------------------------
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DDrawFB::DDrawFB (int width, int height, bool fullscreen)
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: BaseWinFB (width, height, false)
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{
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int i;
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LastHR = 0;
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Palette = NULL;
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PrimarySurf = NULL;
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BackSurf = NULL;
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BackSurf2 = NULL;
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BlitSurf = NULL;
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Clipper = NULL;
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GDIPalette = NULL;
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ClipSize = 0;
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BufferCount = 1;
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Gamma = 1.0;
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BufferPitch = Pitch;
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FlipFlags = vid_vsync ? DDFLIP_WAIT : DDFLIP_WAIT|DDFLIP_NOVSYNC;
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PixelDoubling = 0;
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NeedGammaUpdate = false;
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NeedPalUpdate = false;
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NeedResRecreate = false;
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PaletteChangeExpected = false;
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MustBuffer = false;
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BufferingNow = false;
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WasBuffering = false;
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Write8bit = false;
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UpdatePending = false;
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UseBlitter = false;
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FlashAmount = 0;
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if (MemBuffer == NULL)
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{
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return;
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}
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for (i = 0; i < 256; i++)
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{
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PalEntries[i].peRed = GPalette.BaseColors[i].r;
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PalEntries[i].peGreen = GPalette.BaseColors[i].g;
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PalEntries[i].peBlue = GPalette.BaseColors[i].b;
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GammaTable[0][i] = GammaTable[1][i] = GammaTable[2][i] = (uint8_t)i;
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}
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memcpy (SourcePalette, GPalette.BaseColors, sizeof(PalEntry)*256);
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MustBuffer = false;
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Windowed = !(static_cast<Win32Video *>(Video)->GoFullscreen (fullscreen));
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if (vid_noblitter)
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{
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LOG ("Blitter forced off\n");
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}
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else
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{
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DDCAPS hwcaps = { sizeof(DDCAPS) };
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HRESULT hr = DDraw->GetCaps (&hwcaps, NULL);
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if (SUCCEEDED(hr))
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{
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LOG2 ("dwCaps = %08lx, dwSVBCaps = %08lx\n", hwcaps.dwCaps, hwcaps.dwSVBCaps);
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if (hwcaps.dwCaps & DDCAPS_BLT)
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{
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LOG ("Driver supports blits\n");
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if (hwcaps.dwSVBCaps & DDCAPS_CANBLTSYSMEM)
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{
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LOG ("Driver can blit from system memory\n");
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if (hwcaps.dwCaps & DDCAPS_BLTQUEUE)
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{
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LOG ("Driver supports asynchronous blits\n");
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UseBlitter = true;
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}
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else
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{
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LOG ("Driver does not support asynchronous blits\n");
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}
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}
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else
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{
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LOG ("Driver cannot blit from system memory\n");
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}
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}
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else
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{
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LOG ("Driver does not support blits\n");
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}
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}
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}
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if (!CreateResources ())
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{
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SAFE_RELEASE( PrimarySurf );
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}
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}
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DDrawFB::~DDrawFB ()
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{
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I_SaveWindowedPos ();
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ReleaseResources ();
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}
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bool DDrawFB::CreateResources ()
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{
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DDSURFACEDESC ddsd = { sizeof(ddsd), };
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HRESULT hr;
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int bits;
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BufferCount = 1;
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if (!Windowed)
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{
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// Remove the window border in fullscreen mode
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SetWindowLong (Window, GWL_STYLE, WS_POPUP|WS_VISIBLE|WS_SYSMENU);
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TrueHeight = Height;
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for (Win32Video::ModeInfo *mode = static_cast<Win32Video *>(Video)->m_Modes; mode != NULL; mode = mode->next)
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{
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if (mode->width == Width && mode->height == Height)
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{
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TrueHeight = mode->realheight;
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PixelDoubling = mode->doubling;
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break;
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}
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}
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hr = DDraw->SetDisplayMode (Width << PixelDoubling, TrueHeight << PixelDoubling, bits = vid_displaybits, vid_refreshrate, 0);
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if (FAILED(hr))
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{
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hr = DDraw->SetDisplayMode (Width << PixelDoubling, TrueHeight << PixelDoubling, bits = vid_displaybits, 0, 0);
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bits = 32;
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while (FAILED(hr) && bits >= 8)
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{
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hr = DDraw->SetDisplayMode (Width << PixelDoubling, Height << PixelDoubling, bits, vid_refreshrate, 0);
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if (FAILED(hr))
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{
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hr = DDraw->SetDisplayMode (Width << PixelDoubling, Height << PixelDoubling, bits, 0, 0);
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}
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bits -= 8;
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}
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if (FAILED(hr))
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{
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LastHR = hr;
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return false;
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}
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}
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LOG3 ("Mode set to %d x %d x %d\n", Width, Height, bits);
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if (vid_attachedsurfaces && OSPlatform == os_WinNT4)
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{
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if (!CreateSurfacesAttached ())
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return false;
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}
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else
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{
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if (!CreateSurfacesComplex ())
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return false;
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}
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if (UseBlitter)
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{
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UseBlitter = CreateBlitterSource ();
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}
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}
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else
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{
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MustBuffer = true;
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LOG ("Running in a window\n");
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TrueHeight = Height;
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// Create the primary surface
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ddsd.dwFlags = DDSD_CAPS;
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ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
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// PixelDoubling = 1;
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do
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{
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hr = DDraw->CreateSurface (&ddsd, &PrimarySurf, NULL);
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LOG1 ("Create primary: %08lx\n", hr);
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} while (0);
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if (FAILED(hr))
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{
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LastHR = hr;
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return false;
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}
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MaybeCreatePalette ();
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// Resize the window to match desired dimensions
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RECT rect = { 0, 0, Width << PixelDoubling, Height << PixelDoubling };
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AdjustWindowRectEx(&rect, WS_VISIBLE|WS_OVERLAPPEDWINDOW, FALSE, WS_EX_APPWINDOW);
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int sizew = rect.right - rect.left;
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int sizeh = rect.bottom - rect.top;
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LOG2 ("Resize window to %dx%d\n", sizew, sizeh);
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VidResizing = true;
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// Make sure the window has a border in windowed mode
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SetWindowLong (Window, GWL_STYLE, WS_VISIBLE|WS_OVERLAPPEDWINDOW);
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if (!SetWindowPos (Window, NULL, 0, 0, sizew, sizeh,
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SWP_DRAWFRAME | SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOZORDER))
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{
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LOG1 ("SetWindowPos failed because %08lx\n", GetLastError());
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}
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I_RestoreWindowedPos ();
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VidResizing = false;
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// Create the clipper
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hr = DDraw->CreateClipper (0, &Clipper, NULL);
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LOG1 ("Create clipper: %08lx\n", hr);
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if (FAILED(hr))
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{
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LastHR = hr;
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return false;
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}
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// Associate the clipper with the window
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Clipper->SetHWnd (0, Window);
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PrimarySurf->SetClipper (Clipper);
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LOG1 ("Clipper @ %p set\n", Clipper);
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// Create the backbuffer
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ddsd.dwFlags = DDSD_WIDTH | DDSD_HEIGHT | DDSD_CAPS;
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ddsd.dwWidth = Width << PixelDoubling;
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ddsd.dwHeight = Height << PixelDoubling;
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ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | (UseBlitter ? DDSCAPS_SYSTEMMEMORY : 0);
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hr = DDraw->CreateSurface (&ddsd, &BackSurf, NULL);
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LOG1 ("Create backbuffer: %08lx\n", hr);
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if (FAILED(hr))
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{
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LastHR = hr;
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return false;
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}
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LockingSurf = BackSurf;
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LOG1 ("LockingSurf and BackSurf @ %p\n", BackSurf);
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LOG ("Created backbuf\n");
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}
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SetGamma (Gamma);
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SetFlash (Flash, FlashAmount);
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return true;
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}
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bool DDrawFB::CreateSurfacesAttached ()
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{
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DDSURFACEDESC ddsd = { sizeof(ddsd), };
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HRESULT hr;
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LOG ("creating surfaces using AddAttachedSurface\n");
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ddsd.dwFlags = DDSD_CAPS;
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ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_VIDEOMEMORY;
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hr = DDraw->CreateSurface (&ddsd, &PrimarySurf, NULL);
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if (FAILED(hr))
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{
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LastHR = hr;
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return false;
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}
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LOG1 ("Primary surface @ %p\n", PrimarySurf);
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// Under NT 4 and with bad DDraw drivers under 9x (and maybe Win2k?)
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// if the palette is not attached to the primary surface before any
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// back buffers are added to it, colors 0 and 255 will remain black
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// and white respectively.
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MaybeCreatePalette ();
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// Try for triple buffering. Unbuffered output is only allowed if
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// we manage to get triple buffering. Even with double buffering,
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// framerate can slow significantly compared to triple buffering,
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// so we force buffering in that case, which effectively emulates
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// triple buffering (after a fashion).
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if (!AddBackBuf (&BackSurf, 1) || !AddBackBuf (&BackSurf2, 2))
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{
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// MustBuffer = true;
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}
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if (BackSurf != NULL)
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{
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DDSCAPS caps = { DDSCAPS_BACKBUFFER, };
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hr = PrimarySurf->GetAttachedSurface (&caps, &LockingSurf);
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if (FAILED (hr))
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{
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LOG1 ("Could not get attached surface: %08lx\n", hr);
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if (BackSurf2 != NULL)
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{
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PrimarySurf->DeleteAttachedSurface (0, BackSurf2);
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BackSurf2->Release ();
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BackSurf2 = NULL;
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}
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PrimarySurf->DeleteAttachedSurface (0, BackSurf);
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BackSurf->Release ();
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BackSurf = NULL;
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// MustBuffer = true;
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LockingSurf = PrimarySurf;
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}
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else
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{
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BufferCount = (BackSurf2 != NULL) ? 3 : 2;
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LOG ("Got attached surface\n");
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}
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}
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else
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{
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LOG ("No flip chain\n");
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LockingSurf = PrimarySurf;
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}
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return true;
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}
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bool DDrawFB::AddBackBuf (LPDIRECTDRAWSURFACE *surface, int num)
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{
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DDSURFACEDESC ddsd = { sizeof(ddsd), };
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HRESULT hr;
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ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT;
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ddsd.dwWidth = Width;
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ddsd.dwHeight = Height;
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ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY;
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hr = DDraw->CreateSurface (&ddsd, surface, NULL);
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if (FAILED(hr))
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{
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LOG2 ("could not create back buf %d: %08lx\n", num, hr);
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return false;
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}
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else
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{
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LOG2 ("BackBuf %d created @ %p\n", num, *surface);
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hr = PrimarySurf->AddAttachedSurface (*surface);
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if (FAILED(hr))
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{
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LOG2 ("could not add back buf %d: %08lx\n", num, hr);
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(*surface)->Release ();
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*surface = NULL;
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return false;
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}
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else
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{
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LOG1 ("Attachment of back buf %d succeeded\n", num);
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}
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}
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return true;
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}
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bool DDrawFB::CreateSurfacesComplex ()
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{
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DDSURFACEDESC ddsd = { sizeof(ddsd), };
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HRESULT hr;
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int tries = 2;
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LOG ("creating surfaces using a complex primary\n");
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// Try for triple buffering first.
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// If that fails, try for double buffering.
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// If that fails, settle for single buffering.
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// If that fails, then give up.
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//
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// However, if using the blitter, then do not triple buffer the
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// primary surface, because that is effectively like quadruple
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// buffering and player response starts feeling too sluggish.
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ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
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ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_VIDEOMEMORY
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| DDSCAPS_FLIP | DDSCAPS_COMPLEX;
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do
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{
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LOG1 ("Try #%d\n", tries);
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ddsd.dwBackBufferCount = UseBlitter ? 1 : 2;
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hr = DDraw->CreateSurface (&ddsd, &PrimarySurf, NULL);
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if (FAILED(hr))
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{
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if (hr == DDERR_NOEXCLUSIVEMODE)
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{
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LOG ("Exclusive mode was lost, so restoring it now.\n");
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hr = DDraw->SetCooperativeLevel (Window, DDSCL_ALLOWMODEX | DDSCL_ALLOWREBOOT | DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN);
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LOG1 ("SetCooperativeLevel result: %08lx\n", hr);
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hr = DDraw->SetDisplayMode (Width, Height, 8, 0, 0);
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//hr = DDraw->RestoreDisplayMode ();
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LOG1 ("SetDisplayMode result: %08lx\n", hr);
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++tries;
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hr = E_FAIL;
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continue;
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}
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LOG1 ("Could not create with 2 backbuffers: %lx\n", hr);
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ddsd.dwBackBufferCount = 1;
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hr = DDraw->CreateSurface (&ddsd, &PrimarySurf, NULL);
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if (FAILED(hr))
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{
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LOG1 ("Could not create with 1 backbuffer: %lx\n", hr);
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ddsd.ddsCaps.dwCaps &= ~DDSCAPS_FLIP | DDSCAPS_COMPLEX;
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ddsd.dwBackBufferCount = 0;
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hr = DDraw->CreateSurface (&ddsd, &PrimarySurf, NULL);
|
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if (FAILED (hr))
|
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{
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LOG1 ("Could not create with 0 backbuffers: %lx\n", hr);
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if (tries == 2)
|
|
{
|
|
LOG ("Retrying without DDSCAPS_VIDEOMEMORY\n");
|
|
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE
|
|
| DDSCAPS_FLIP | DDSCAPS_COMPLEX;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} while (FAILED(hr) && --tries);
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
LastHR = hr;
|
|
return false;
|
|
}
|
|
|
|
LOG1 ("Complex surface chain @ %p\n", PrimarySurf);
|
|
if (PrimarySurf == NULL)
|
|
{
|
|
LOG ("It's NULL but it didn't fail?!?\n");
|
|
LastHR = E_FAIL;
|
|
return false;
|
|
}
|
|
|
|
if (ddsd.dwBackBufferCount == 0)
|
|
{
|
|
LOG ("No flip chain\n");
|
|
// MustBuffer = true;
|
|
LockingSurf = PrimarySurf;
|
|
}
|
|
else
|
|
{
|
|
DDSCAPS caps = { DDSCAPS_BACKBUFFER, };
|
|
hr = PrimarySurf->GetAttachedSurface (&caps, &LockingSurf);
|
|
if (FAILED (hr))
|
|
{
|
|
LOG1 ("Could not get attached surface: %08lx\n", hr);
|
|
// MustBuffer = true;
|
|
LockingSurf = PrimarySurf;
|
|
}
|
|
else
|
|
{
|
|
BufferCount = ddsd.dwBackBufferCount + 1;
|
|
LOG1 ("Got attached surface. %d buffers\n", BufferCount);
|
|
}
|
|
}
|
|
|
|
MaybeCreatePalette ();
|
|
return true;
|
|
}
|
|
|
|
bool DDrawFB::CreateBlitterSource ()
|
|
{
|
|
DDSURFACEDESC ddsd = { sizeof(ddsd), };
|
|
HRESULT hr;
|
|
|
|
LOG ("Creating surface for blitter source\n");
|
|
ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT | DDSD_BACKBUFFERCOUNT;
|
|
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY
|
|
| DDSCAPS_FLIP | DDSCAPS_COMPLEX;
|
|
ddsd.dwBackBufferCount = 2;
|
|
ddsd.dwWidth = (Width==1024?1024+16:Width);
|
|
ddsd.dwHeight = Height;
|
|
hr = DDraw->CreateSurface (&ddsd, &BlitSurf, NULL);
|
|
if (FAILED(hr))
|
|
{
|
|
LOG1 ("Trying to create blitter source with only one surface (%08lx)\n", hr);
|
|
ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT;
|
|
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY;
|
|
hr = DDraw->CreateSurface (&ddsd, &BlitSurf, NULL);
|
|
if (FAILED(hr))
|
|
{
|
|
LOG1 ("Could not create blitter source: %08lx\n", hr);
|
|
MustBuffer = true;
|
|
return false;
|
|
}
|
|
BufferCount = MAX (BufferCount, 1);
|
|
}
|
|
else
|
|
{
|
|
BufferCount = MAX (BufferCount, 2);
|
|
}
|
|
LOG1 ("Blitter source created successfully @ %p\n", BlitSurf);
|
|
return true;
|
|
}
|
|
|
|
void DDrawFB::MaybeCreatePalette ()
|
|
{
|
|
DDPIXELFORMAT fmt = { sizeof(fmt), };
|
|
HRESULT hr;
|
|
int i;
|
|
|
|
UsePfx = false;
|
|
|
|
// If the surface needs a palette, try to create one. If the palette
|
|
// cannot be created, the result is ugly but non-fatal.
|
|
hr = PrimarySurf->GetPixelFormat (&fmt);
|
|
if (SUCCEEDED (hr) && (fmt.dwFlags & DDPF_PALETTEINDEXED8))
|
|
{
|
|
LOG ("Surface is paletted\n");
|
|
GPfx.SetFormat (fmt.dwRGBBitCount,
|
|
fmt.dwRBitMask, fmt.dwGBitMask, fmt.dwBBitMask);
|
|
|
|
if (Windowed)
|
|
{
|
|
struct { LOGPALETTE head; PALETTEENTRY filler[255]; } pal;
|
|
|
|
LOG ("Writing in a window\n");
|
|
Write8bit = true;
|
|
pal.head.palVersion = 0x300;
|
|
pal.head.palNumEntries = 256;
|
|
memcpy (pal.head.palPalEntry, PalEntries, 256*sizeof(PalEntries[0]));
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
pal.head.palPalEntry[i].peFlags = 0;
|
|
}
|
|
GDIPalette = ::CreatePalette (&pal.head);
|
|
LOG ("Created GDI palette\n");
|
|
if (GDIPalette != NULL)
|
|
{
|
|
HDC dc = GetDC (Window);
|
|
SelectPalette (dc, GDIPalette, FALSE);
|
|
RealizePalette (dc);
|
|
ReleaseDC (Window, dc);
|
|
RebuildColorTable ();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
hr = DDraw->CreatePalette (DDPCAPS_8BIT|DDPCAPS_ALLOW256, PalEntries, &Palette, NULL);
|
|
if (FAILED(hr))
|
|
{
|
|
LOG ("Could not create palette\n");
|
|
Palette = NULL; // NULL it just to be safe
|
|
}
|
|
else
|
|
{
|
|
hr = PrimarySurf->SetPalette (Palette);
|
|
if (FAILED(hr))
|
|
{
|
|
LOG ("Could not attach palette to surface\n");
|
|
Palette->Release ();
|
|
Palette = NULL;
|
|
}
|
|
else
|
|
{
|
|
// The palette was supposed to have been initialized with
|
|
// the correct colors, but some drivers don't do that.
|
|
// (On the other hand, the docs for the SetPalette method
|
|
// don't state that the surface will be set to the
|
|
// palette's colors when it gets set, so this might be
|
|
// legal behavior. Wish I knew...)
|
|
NeedPalUpdate = true;
|
|
}
|
|
}
|
|
if (PixelDoubling)
|
|
{
|
|
UsePfx = true;
|
|
GPfx.SetFormat (-8, 0, 0, 0);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
LOG ("Surface is direct color\n");
|
|
UsePfx = true;
|
|
GPfx.SetFormat (fmt.dwRGBBitCount,
|
|
fmt.dwRBitMask, fmt.dwGBitMask, fmt.dwBBitMask);
|
|
GPfx.SetPalette (GPalette.BaseColors);
|
|
}
|
|
}
|
|
|
|
void DDrawFB::ReleaseResources ()
|
|
{
|
|
if (LockCount)
|
|
{
|
|
LockCount = 1;
|
|
Unlock ();
|
|
}
|
|
|
|
SAFE_RELEASE( Clipper );
|
|
SAFE_RELEASE( PrimarySurf );
|
|
SAFE_RELEASE( BackSurf );
|
|
SAFE_RELEASE( BackSurf2 );
|
|
SAFE_RELEASE( BlitSurf );
|
|
SAFE_RELEASE( Palette );
|
|
if (GDIPalette != NULL)
|
|
{
|
|
HDC dc = GetDC (Window);
|
|
SelectPalette (dc, (HPALETTE)GetStockObject (DEFAULT_PALETTE), TRUE);
|
|
DeleteObject (GDIPalette);
|
|
ReleaseDC (Window, dc);
|
|
GDIPalette = NULL;
|
|
}
|
|
LockingSurf = NULL;
|
|
}
|
|
|
|
int DDrawFB::GetPageCount ()
|
|
{
|
|
return MustBuffer ? 1 : BufferCount+1;
|
|
}
|
|
|
|
void DDrawFB::PaletteChanged ()
|
|
{
|
|
// Somebody else changed the palette. If we are running fullscreen,
|
|
// they are obviously jerks, and we need to restore our own palette.
|
|
if (!Windowed)
|
|
{
|
|
if (!PaletteChangeExpected && Palette != NULL)
|
|
{
|
|
// It is not enough to set NeedPalUpdate to true. Some palette
|
|
// entries might now be reserved for system usage, and nothing
|
|
// we do will change them. The only way I have found to fix this
|
|
// is to recreate all our surfaces and the palette from scratch.
|
|
|
|
// IMPORTANT: Do not recreate the resources here. The screen might
|
|
// be locked for a drawing operation. Do it later the next time
|
|
// somebody tries to lock it.
|
|
NeedResRecreate = true;
|
|
}
|
|
PaletteChangeExpected = false;
|
|
}
|
|
else
|
|
{
|
|
QueryNewPalette ();
|
|
}
|
|
}
|
|
|
|
int DDrawFB::QueryNewPalette ()
|
|
{
|
|
LOG ("QueryNewPalette\n");
|
|
if (GDIPalette == NULL && Windowed)
|
|
{
|
|
if (Write8bit)
|
|
{
|
|
RebuildColorTable ();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
HDC dc = GetDC (Window);
|
|
HPALETTE oldPal = SelectPalette (dc, GDIPalette, FALSE);
|
|
int i = RealizePalette (dc);
|
|
SelectPalette (dc, oldPal, TRUE);
|
|
RealizePalette (dc);
|
|
ReleaseDC (Window, dc);
|
|
if (i != 0)
|
|
{
|
|
RebuildColorTable ();
|
|
}
|
|
return i;
|
|
}
|
|
|
|
void DDrawFB::RebuildColorTable ()
|
|
{
|
|
int i;
|
|
|
|
if (Write8bit)
|
|
{
|
|
PALETTEENTRY syspal[256];
|
|
HDC dc = GetDC (Window);
|
|
|
|
GetSystemPaletteEntries (dc, 0, 256, syspal);
|
|
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
swapvalues (syspal[i].peRed, syspal[i].peBlue);
|
|
}
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
GPfxPal.Pal8[i] = (uint8_t)BestColor ((uint32_t *)syspal, PalEntries[i].peRed,
|
|
PalEntries[i].peGreen, PalEntries[i].peBlue);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool DDrawFB::Is8BitMode()
|
|
{
|
|
if (Windowed)
|
|
{
|
|
return Write8bit;
|
|
}
|
|
DDPIXELFORMAT fmt = { sizeof(fmt), };
|
|
HRESULT hr;
|
|
|
|
hr = PrimarySurf->GetPixelFormat(&fmt);
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
return !!(fmt.dwFlags & DDPF_PALETTEINDEXED8);
|
|
}
|
|
// Can't get the primary surface's pixel format, so assume
|
|
// vid_displaybits is accurate.
|
|
return vid_displaybits == 8;
|
|
}
|
|
|
|
bool DDrawFB::IsValid ()
|
|
{
|
|
return PrimarySurf != NULL;
|
|
}
|
|
|
|
HRESULT DDrawFB::GetHR ()
|
|
{
|
|
return LastHR;
|
|
}
|
|
|
|
bool DDrawFB::Lock (bool useSimpleCanvas)
|
|
{
|
|
static int lock_num;
|
|
bool wasLost;
|
|
|
|
// LOG2 (" Lock (%d) <%d>\n", buffered, LockCount);
|
|
|
|
LOG3("Lock %5x <%d> %d\n", (AppActive << 16) | (SessionState << 12) | (MustBuffer << 8) |
|
|
(useSimpleCanvas << 4) | (int)UseBlitter, LockCount, lock_num++);
|
|
|
|
if (LockCount++ > 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
wasLost = false;
|
|
|
|
if (NeedResRecreate && LockCount == 1)
|
|
{
|
|
LOG("Recreating resources\n");
|
|
NeedResRecreate = false;
|
|
ReleaseResources ();
|
|
CreateResources ();
|
|
// ReleaseResources sets LockCount to 0.
|
|
LockCount = 1;
|
|
}
|
|
|
|
if (!AppActive || SessionState || MustBuffer || useSimpleCanvas || !UseBlitter)
|
|
{
|
|
Buffer = MemBuffer;
|
|
Pitch = BufferPitch;
|
|
BufferingNow = true;
|
|
}
|
|
else
|
|
{
|
|
HRESULT hr GCCNOWARN = BlitSurf->Flip (NULL, DDFLIP_WAIT);
|
|
hr;
|
|
LOG1 ("Blit flip = %08lx\n", hr);
|
|
LockSurfRes res = LockSurf (NULL, BlitSurf);
|
|
|
|
if (res == NoGood)
|
|
{ // We must have a surface locked before returning,
|
|
// but we could not lock the hardware surface, so buffer
|
|
// for this frame.
|
|
Buffer = MemBuffer;
|
|
Pitch = BufferPitch;
|
|
BufferingNow = true;
|
|
}
|
|
else
|
|
{
|
|
wasLost = (res == GoodWasLost);
|
|
}
|
|
}
|
|
|
|
wasLost = wasLost || (BufferingNow != WasBuffering);
|
|
WasBuffering = BufferingNow;
|
|
return wasLost;
|
|
}
|
|
|
|
void DDrawFB::Unlock ()
|
|
{
|
|
LOG1 ("Unlock <%d>\n", LockCount);
|
|
|
|
if (LockCount == 0)
|
|
{
|
|
LOG("Unlock called when already unlocked\n");
|
|
return;
|
|
}
|
|
|
|
if (UpdatePending && LockCount == 1)
|
|
{
|
|
Update ();
|
|
}
|
|
else if (--LockCount == 0)
|
|
{
|
|
if (!BufferingNow)
|
|
{
|
|
if (BlitSurf == NULL)
|
|
{
|
|
LockingSurf->Unlock (NULL);
|
|
}
|
|
else
|
|
{
|
|
BlitSurf->Unlock (NULL);
|
|
}
|
|
}
|
|
Buffer = NULL;
|
|
}
|
|
}
|
|
|
|
DDrawFB::LockSurfRes DDrawFB::LockSurf (LPRECT lockrect, LPDIRECTDRAWSURFACE toLock)
|
|
{
|
|
HRESULT hr;
|
|
DDSURFACEDESC desc = { sizeof(desc), };
|
|
bool wasLost = false;
|
|
bool lockingLocker = false;
|
|
|
|
if (toLock == NULL)
|
|
{
|
|
lockingLocker = true;
|
|
if (LockingSurf == NULL)
|
|
{
|
|
LOG("LockingSurf lost\n");
|
|
if (!CreateResources ())
|
|
{
|
|
if (LastHR != DDERR_UNSUPPORTEDMODE)
|
|
{
|
|
I_FatalError ("Could not rebuild framebuffer: %08lx", LastHR);
|
|
}
|
|
else
|
|
{
|
|
LOG ("Display is in unsupported mode right now.\n");
|
|
return NoGood;
|
|
}
|
|
}
|
|
}
|
|
toLock = LockingSurf;
|
|
}
|
|
|
|
hr = toLock->Lock (lockrect, &desc, DDLOCK_SURFACEMEMORYPTR | DDLOCK_WAIT | DDLOCK_WRITEONLY, NULL);
|
|
LOG3 ("LockSurf %p (%d): %08lx\n", toLock, lockingLocker, hr);
|
|
|
|
if (hr == DDERR_SURFACELOST)
|
|
{
|
|
wasLost = true;
|
|
if (FAILED (AttemptRestore ()))
|
|
{
|
|
return NoGood;
|
|
}
|
|
if (BlitSurf && FAILED(BlitSurf->IsLost ()))
|
|
{
|
|
LOG ("Restore blitter surface\n");
|
|
hr = BlitSurf->Restore ();
|
|
if (FAILED (hr))
|
|
{
|
|
LOG1 ("Could not restore blitter surface: %08lx", hr);
|
|
BlitSurf->Release ();
|
|
if (BlitSurf == toLock)
|
|
{
|
|
BlitSurf = NULL;
|
|
return NoGood;
|
|
}
|
|
BlitSurf = NULL;
|
|
}
|
|
}
|
|
if (lockingLocker)
|
|
{
|
|
toLock = LockingSurf;
|
|
}
|
|
LOG ("Trying to lock again\n");
|
|
hr = toLock->Lock (lockrect, &desc, DDLOCK_SURFACEMEMORYPTR | DDLOCK_WAIT | DDLOCK_WRITEONLY, NULL);
|
|
if (hr == DDERR_SURFACELOST && Windowed)
|
|
{ // If this is NT, the user probably opened the Windows NT Security dialog.
|
|
// If this is not NT, trying to recreate everything from scratch won't hurt.
|
|
ReleaseResources ();
|
|
if (!CreateResources ())
|
|
{
|
|
if (LastHR != DDERR_UNSUPPORTEDMODE)
|
|
{
|
|
I_FatalError ("Could not rebuild framebuffer: %08lx", LastHR);
|
|
}
|
|
else
|
|
{
|
|
LOG ("Display is in unsupported mode right now.\n");
|
|
return NoGood;
|
|
}
|
|
}
|
|
if (lockingLocker)
|
|
{
|
|
toLock = LockingSurf;
|
|
}
|
|
hr = toLock->Lock (lockrect, &desc, DDLOCK_SURFACEMEMORYPTR | DDLOCK_WAIT | DDLOCK_WRITEONLY, NULL);
|
|
}
|
|
}
|
|
if (FAILED (hr))
|
|
{ // Still could not restore the surface, so don't draw anything
|
|
//I_FatalError ("Could not lock framebuffer: %08lx", hr);
|
|
LOG1 ("Final result after restoration attempts: %08lx\n", hr);
|
|
return NoGood;
|
|
}
|
|
Buffer = (uint8_t *)desc.lpSurface;
|
|
Pitch = desc.lPitch;
|
|
BufferingNow = false;
|
|
return wasLost ? GoodWasLost : Good;
|
|
}
|
|
|
|
HRESULT DDrawFB::AttemptRestore ()
|
|
{
|
|
LOG ("Restore primary\n");
|
|
HRESULT hr = PrimarySurf->Restore ();
|
|
if (hr == DDERR_WRONGMODE && Windowed)
|
|
{ // The user changed the screen mode
|
|
LOG ("DDERR_WRONGMODE and windowed, so recreating all resources\n");
|
|
ReleaseResources ();
|
|
if (!CreateResources ())
|
|
{
|
|
LOG1 ("Could not recreate framebuffer: %08lx", LastHR);
|
|
return LastHR;
|
|
}
|
|
}
|
|
else if (FAILED (hr))
|
|
{
|
|
LOG1 ("Could not restore primary surface: %08lx", hr);
|
|
return hr;
|
|
}
|
|
if (BackSurf && FAILED(BackSurf->IsLost ()))
|
|
{
|
|
LOG ("Restore backbuffer\n");
|
|
hr = BackSurf->Restore ();
|
|
if (FAILED (hr))
|
|
{
|
|
I_FatalError ("Could not restore backbuffer: %08lx", hr);
|
|
}
|
|
}
|
|
if (BackSurf2 && FAILED(BackSurf2->IsLost ()))
|
|
{
|
|
LOG ("Restore backbuffer 2\n");
|
|
hr = BackSurf2->Restore ();
|
|
if (FAILED (hr))
|
|
{
|
|
I_FatalError ("Could not restore backbuffer 2: %08lx", hr);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void DDrawFB::Update ()
|
|
{
|
|
bool pchanged = false;
|
|
int i;
|
|
|
|
LOG3 ("Update <%d,%c:%d>\n", LockCount, AppActive?'Y':'N', SessionState);
|
|
|
|
if (LockCount != 1)
|
|
{
|
|
//I_FatalError ("Framebuffer must have exactly 1 lock to be updated");
|
|
if (LockCount > 0)
|
|
{
|
|
UpdatePending = true;
|
|
--LockCount;
|
|
}
|
|
return;
|
|
}
|
|
|
|
DrawRateStuff ();
|
|
|
|
if (NeedGammaUpdate)
|
|
{
|
|
NeedGammaUpdate = false;
|
|
CalcGamma (Windowed || rgamma == 0.f ? Gamma : Gamma * rgamma, GammaTable[0]);
|
|
CalcGamma (Windowed || ggamma == 0.f ? Gamma : Gamma * ggamma, GammaTable[1]);
|
|
CalcGamma (Windowed || bgamma == 0.f ? Gamma : Gamma * bgamma, GammaTable[2]);
|
|
NeedPalUpdate = true;
|
|
}
|
|
|
|
if (NeedPalUpdate || vid_palettehack)
|
|
{
|
|
NeedPalUpdate = false;
|
|
if (Palette != NULL || GDIPalette != NULL)
|
|
{
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
PalEntries[i].peRed = GammaTable[0][SourcePalette[i].r];
|
|
PalEntries[i].peGreen = GammaTable[1][SourcePalette[i].g];
|
|
PalEntries[i].peBlue = GammaTable[2][SourcePalette[i].b];
|
|
}
|
|
if (FlashAmount)
|
|
{
|
|
DoBlending ((PalEntry *)PalEntries, (PalEntry *)PalEntries,
|
|
256, GammaTable[2][Flash.b], GammaTable[1][Flash.g], GammaTable[0][Flash.r],
|
|
FlashAmount);
|
|
}
|
|
if (Palette != NULL)
|
|
{
|
|
pchanged = true;
|
|
}
|
|
else
|
|
{
|
|
/* Argh! Too slow!
|
|
SetPaletteEntries (GDIPalette, 0, 256, PalEntries);
|
|
HDC dc = GetDC (Window);
|
|
SelectPalette (dc, GDIPalette, FALSE);
|
|
RealizePalette (dc);
|
|
ReleaseDC (Window, dc);
|
|
*/
|
|
RebuildColorTable ();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
((PalEntry *)PalEntries)[i].r = GammaTable[0][SourcePalette[i].r];
|
|
((PalEntry *)PalEntries)[i].g = GammaTable[1][SourcePalette[i].g];
|
|
((PalEntry *)PalEntries)[i].b = GammaTable[2][SourcePalette[i].b];
|
|
}
|
|
if (FlashAmount)
|
|
{
|
|
DoBlending ((PalEntry *)PalEntries, (PalEntry *)PalEntries,
|
|
256, GammaTable[0][Flash.r], GammaTable[1][Flash.g], GammaTable[2][Flash.b],
|
|
FlashAmount);
|
|
}
|
|
GPfx.SetPalette ((PalEntry *)PalEntries);
|
|
}
|
|
}
|
|
|
|
BlitCycles.Reset();
|
|
BlitCycles.Clock();
|
|
|
|
if (BufferingNow)
|
|
{
|
|
LockCount = 0;
|
|
if ((Windowed || AppActive) && !SessionState && !PaintToWindow())
|
|
{
|
|
if (LockSurf (NULL, NULL) != NoGood)
|
|
{
|
|
uint8_t *writept = Buffer + (TrueHeight - Height)/2*Pitch;
|
|
LOG3 ("Copy %dx%d (%d)\n", Width, Height, BufferPitch);
|
|
if (UsePfx)
|
|
{
|
|
GPfx.Convert (MemBuffer, BufferPitch,
|
|
writept, Pitch, Width << PixelDoubling, Height << PixelDoubling,
|
|
FRACUNIT >> PixelDoubling, FRACUNIT >> PixelDoubling, 0, 0);
|
|
}
|
|
else
|
|
{
|
|
CopyFromBuff (MemBuffer, BufferPitch, Width, Height, writept);
|
|
}
|
|
if (TrueHeight != Height)
|
|
{
|
|
// Letterbox time! Draw black top and bottom borders.
|
|
int topborder = (TrueHeight - Height) / 2;
|
|
int botborder = TrueHeight - topborder - Height;
|
|
memset (Buffer, 0, Pitch*topborder);
|
|
memset (writept + Height*Pitch, 0, Pitch*botborder);
|
|
}
|
|
LockingSurf->Unlock (NULL);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (BlitSurf != NULL)
|
|
{
|
|
HRESULT hr;
|
|
BlitSurf->Unlock (NULL);
|
|
RECT srcRect = { 0, 0, Width, Height };
|
|
hr = LockingSurf->BltFast (0, 0, BlitSurf, &srcRect, DDBLTFAST_NOCOLORKEY|DDBLTFAST_WAIT);
|
|
if (FAILED (hr))
|
|
{
|
|
LOG1 ("Could not blit: %08lx\n", hr);
|
|
if (hr == DDERR_SURFACELOST)
|
|
{
|
|
if (SUCCEEDED (AttemptRestore ()))
|
|
{
|
|
hr = LockingSurf->BltFast (0, 0, BlitSurf, &srcRect, DDBLTFAST_NOCOLORKEY|DDBLTFAST_WAIT);
|
|
if (FAILED (hr))
|
|
{
|
|
LOG1 ("Blit retry also failed: %08lx\n", hr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
LOG ("Blit ok\n");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
LockingSurf->Unlock (NULL);
|
|
}
|
|
}
|
|
|
|
BlitCycles.Unclock();
|
|
LOG1 ("cycles = %.1f ms\n", BlitCycles.TimeMS());
|
|
|
|
Buffer = NULL;
|
|
LockCount = 0;
|
|
UpdatePending = false;
|
|
|
|
I_FPSLimit();
|
|
if (!Windowed && AppActive && !SessionState /*&& !UseBlitter && !MustBuffer*/)
|
|
{
|
|
HRESULT hr = PrimarySurf->Flip (NULL, FlipFlags);
|
|
LOG1 ("Flip = %08lx\n", hr);
|
|
if (hr == DDERR_INVALIDPARAMS)
|
|
{
|
|
if (FlipFlags & DDFLIP_NOVSYNC)
|
|
{
|
|
FlipFlags &= ~DDFLIP_NOVSYNC;
|
|
Printf ("Can't disable vsync\n");
|
|
PrimarySurf->Flip (NULL, FlipFlags);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pchanged && AppActive && !SessionState)
|
|
{
|
|
PaletteChangeExpected = true;
|
|
Palette->SetEntries (0, 0, 256, PalEntries);
|
|
}
|
|
}
|
|
|
|
bool DDrawFB::PaintToWindow ()
|
|
{
|
|
if (Windowed && LockCount == 0)
|
|
{
|
|
HRESULT hr;
|
|
RECT rect;
|
|
GetClientRect (Window, &rect);
|
|
if (rect.right != 0 && rect.bottom != 0)
|
|
{
|
|
// Use blit to copy/stretch to window's client rect
|
|
ClientToScreen (Window, (POINT*)&rect.left);
|
|
ClientToScreen (Window, (POINT*)&rect.right);
|
|
LOG ("Paint to window\n");
|
|
if (LockSurf (NULL, NULL) != NoGood)
|
|
{
|
|
GPfx.Convert (MemBuffer, BufferPitch,
|
|
Buffer, Pitch, Width << PixelDoubling, Height << PixelDoubling,
|
|
FRACUNIT >> PixelDoubling, FRACUNIT >> PixelDoubling, 0, 0);
|
|
LockingSurf->Unlock (NULL);
|
|
if (FAILED (hr = PrimarySurf->Blt (&rect, BackSurf, NULL, DDBLT_WAIT|DDBLT_ASYNC, NULL)))
|
|
{
|
|
if (hr == DDERR_SURFACELOST)
|
|
{
|
|
PrimarySurf->Restore ();
|
|
}
|
|
PrimarySurf->Blt (&rect, BackSurf, NULL, DDBLT_WAIT, NULL);
|
|
}
|
|
}
|
|
Buffer = NULL;
|
|
LOG ("Did paint to window\n");
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
PalEntry *DDrawFB::GetPalette ()
|
|
{
|
|
return SourcePalette;
|
|
}
|
|
|
|
void DDrawFB::UpdatePalette ()
|
|
{
|
|
NeedPalUpdate = true;
|
|
}
|
|
|
|
bool DDrawFB::SetGamma (float gamma)
|
|
{
|
|
LOG1 ("SetGamma %g\n", gamma);
|
|
Gamma = gamma;
|
|
NeedGammaUpdate = true;
|
|
return true;
|
|
}
|
|
|
|
bool DDrawFB::SetFlash (PalEntry rgb, int amount)
|
|
{
|
|
Flash = rgb;
|
|
FlashAmount = amount;
|
|
NeedPalUpdate = true;
|
|
return true;
|
|
}
|
|
|
|
void DDrawFB::GetFlash (PalEntry &rgb, int &amount)
|
|
{
|
|
rgb = Flash;
|
|
amount = FlashAmount;
|
|
}
|
|
|
|
// Q: Should I gamma adjust the returned palette?
|
|
// A: No. PNG screenshots save the gamma value, so there is no need.
|
|
void DDrawFB::GetFlashedPalette (PalEntry pal[256])
|
|
{
|
|
memcpy (pal, SourcePalette, 256*sizeof(PalEntry));
|
|
if (FlashAmount)
|
|
{
|
|
DoBlending (pal, pal, 256, Flash.r, Flash.g, Flash.b, FlashAmount);
|
|
}
|
|
}
|
|
|
|
void DDrawFB::SetVSync (bool vsync)
|
|
{
|
|
LOG1 ("vid_vsync set to %d\n", vsync);
|
|
FlipFlags = vsync ? DDFLIP_WAIT : DDFLIP_WAIT|DDFLIP_NOVSYNC;
|
|
}
|
|
|
|
void DDrawFB::NewRefreshRate()
|
|
{
|
|
if (!Windowed)
|
|
{
|
|
NeedResRecreate = true;
|
|
}
|
|
}
|
|
|
|
void DDrawFB::Blank ()
|
|
{
|
|
if (IsFullscreen ())
|
|
{
|
|
DDBLTFX blitFX = { sizeof(blitFX) };
|
|
|
|
blitFX.dwFillColor = 0;
|
|
DDraw->FlipToGDISurface ();
|
|
PrimarySurf->Blt (NULL, NULL, NULL, DDBLT_COLORFILL, &blitFX);
|
|
}
|
|
}
|
|
|
|
ADD_STAT (blit)
|
|
{
|
|
FString out;
|
|
out.Format ("blit=%04.1f ms", BlitCycles.TimeMS());
|
|
return out;
|
|
}
|