2e7bcf9e41
This will mostly ensure that each patch used for composition is only loaded once and automatically unloaded once no longer needed. So far only for paletted rendering, but the same logic can be used for true color as well.
309 lines
9.7 KiB
C++
309 lines
9.7 KiB
C++
/*
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** texture.cpp
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** The base texture class
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**
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**---------------------------------------------------------------------------
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** Copyright 2004-2007 Randy Heit
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** Copyright 2006-2018 Christoph Oelckers
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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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*/
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#include "v_video.h"
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#include "bitmap.h"
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#include "image.h"
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#include "w_wad.h"
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#include "files.h"
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FMemArena FImageSource::ImageArena(32768);
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TArray<FImageSource *>FImageSource::ImageForLump;
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int FImageSource::NextID;
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static PrecacheInfo precacheInfo;
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struct PrecacheDataPaletted
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{
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TArray<uint8_t> Pixels;
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int RefCount;
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int ImageID;
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};
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struct PrecacheDataRgba
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{
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FBitmap Pixels;
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int ImageID;
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};
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// TMap doesn't handle this kind of data well. std::map neither. The linear search is still faster, even for a few 100 entries because it doesn't have to access the heap as often..
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TArray<PrecacheDataPaletted> precacheDataPaletted;
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TArray<PrecacheDataRgba> precacheDataRgba;
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//===========================================================================
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//
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// the default just returns an empty texture.
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//
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//===========================================================================
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TArray<uint8_t> FImageSource::CreatePalettedPixels(int conversion)
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{
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TArray<uint8_t> Pixels(Width * Height, true);
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memset(Pixels.Data(), 0, Width * Height);
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return Pixels;
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}
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PalettedPixels FImageSource::GetCachedPalettedPixels(int conversion)
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{
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PalettedPixels ret;
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FString name;
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Wads.GetLumpName(name, SourceLump);
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if (name.CompareNoCase("W_136") == 0)
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{
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int a = 0;
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}
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std::pair<int, int> *info = nullptr;
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auto imageID = ImageID;
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// Do we have this image in the cache?
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unsigned index = precacheDataPaletted.FindEx([=](PrecacheDataPaletted &entry) { return entry.ImageID == imageID; });
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if (index < precacheDataPaletted.Size())
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{
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auto cache = &precacheDataPaletted[index];
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if (cache->RefCount > 1)
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{
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Printf("returning reference to %s, refcount = %d\n", name.GetChars(), cache->RefCount);
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ret.Pixels.Set(cache->Pixels.Data(), cache->Pixels.Size());
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cache->RefCount--;
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}
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else if (cache->Pixels.Size() > 0)
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{
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Printf("returning contents of %s, refcount = %d\n", name.GetChars(), cache->RefCount);
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ret.PixelStore = std::move(cache->Pixels);
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ret.Pixels.Set(ret.PixelStore.Data(), ret.PixelStore.Size());
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precacheDataPaletted.Delete(index);
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}
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else
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{
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Printf("something bad happened for %s, refcount = %d\n", name.GetChars(), cache->RefCount);
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}
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}
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else
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{
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// The image wasn't cached. Now there's two possibilities:
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auto info = precacheInfo.CheckKey(ImageID);
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if (!info || info->second <= 1 || conversion != normal)
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{
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// This is either the only copy needed or some access outside the caching block. In these cases create a new one and directly return it.
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Printf("returning fresh copy of %s\n", name.GetChars());
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ret.PixelStore = CreatePalettedPixels(conversion);
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ret.Pixels.Set(ret.PixelStore.Data(), ret.PixelStore.Size());
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}
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else
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{
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Printf("creating cached entry for %s, refcount = %d\n", name.GetChars(), info->second);
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// This is the first time it gets accessed and needs to be placed in the cache.
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PrecacheDataPaletted *pdp = &precacheDataPaletted[precacheDataPaletted.Reserve(1)];
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pdp->ImageID = imageID;
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pdp->RefCount = info->second - 1;
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info->second = 0;
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pdp->Pixels = CreatePalettedPixels(normal);
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ret.Pixels.Set(pdp->Pixels.Data(), pdp->Pixels.Size());
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}
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}
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return ret;
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}
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TArray<uint8_t> FImageSource::GetPalettedPixels(int conversion)
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{
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auto pix = GetCachedPalettedPixels(conversion);
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if (pix.ownsPixels())
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{
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// return the pixel store of the returned data directly if this was the last reference.
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auto array = std::move(pix.PixelStore);
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return array;
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}
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else
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{
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// If there are pending references, make a copy.
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TArray<uint8_t> array(pix.Pixels.Size(), true);
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memcpy(array.Data(), pix.Pixels.Data(), array.Size());
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return array;
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}
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}
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//===========================================================================
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//
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// FImageSource::CopyPixels
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//
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// this is the generic case that can handle
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// any properly implemented texture for software rendering.
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// Its drawback is that it is limited to the base palette which is
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// why all classes that handle different palettes should subclass this
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// method
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//
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//===========================================================================
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int FImageSource::CopyPixels(FBitmap *bmp, int conversion)
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{
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if (conversion == luminance) conversion = normal; // luminance images have no use as an RGB source.
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PalEntry *palette = screen->GetPalette();
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for(int i=1;i<256;i++) palette[i].a = 255; // set proper alpha values
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auto ppix = CreatePalettedPixels(conversion);
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bmp->CopyPixelData(0, 0, ppix.Data(), Width, Height, Height, 1, 0, palette, nullptr);
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for(int i=1;i<256;i++) palette[i].a = 0;
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return 0;
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}
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int FImageSource::CopyTranslatedPixels(FBitmap *bmp, PalEntry *remap)
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{
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auto ppix = CreatePalettedPixels(false);
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bmp->CopyPixelData(0, 0, ppix.Data(), Width, Height, Height, 1, 0, remap, nullptr);
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return 0;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void FImageSource::CollectForPrecache(PrecacheInfo &info, bool requiretruecolor)
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{
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auto val = info.CheckKey(ImageID);
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bool tc = requiretruecolor || V_IsTrueColor();
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if (val)
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{
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val->first += tc;
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val->second += !tc;
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}
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else
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{
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auto pair = std::make_pair(tc, !tc);
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info.Insert(ImageID, pair);
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}
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}
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void FImageSource::BeginPrecaching()
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{
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precacheInfo.Clear();
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}
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void FImageSource::EndPrecaching()
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{
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precacheDataPaletted.Clear();
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precacheDataRgba.Clear();
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}
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void FImageSource::RegisterForPrecache(FImageSource *img)
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{
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img->CollectForPrecache(precacheInfo);
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}
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FBitmap FImageSource::GetPixelsWithCache(int conversion)
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{
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return FBitmap();
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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typedef FImageSource * (*CreateFunc)(FileReader & file, int lumpnum);
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struct TexCreateInfo
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{
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CreateFunc TryCreate;
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ETextureType usetype;
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};
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FImageSource *IMGZImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *PNGImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *JPEGImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *DDSImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *PCXImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *TGAImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *RawPageImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *FlatImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *PatchImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *EmptyImage_TryCreate(FileReader &, int lumpnum);
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FImageSource *AutomapImage_TryCreate(FileReader &, int lumpnum);
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// Examines the lump contents to decide what type of texture to create,
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// and creates the texture.
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FImageSource * FImageSource::GetImage(int lumpnum, ETextureType usetype)
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{
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static TexCreateInfo CreateInfo[] = {
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{ IMGZImage_TryCreate, ETextureType::Any },
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{ PNGImage_TryCreate, ETextureType::Any },
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{ JPEGImage_TryCreate, ETextureType::Any },
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{ DDSImage_TryCreate, ETextureType::Any },
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{ PCXImage_TryCreate, ETextureType::Any },
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{ TGAImage_TryCreate, ETextureType::Any },
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{ RawPageImage_TryCreate, ETextureType::MiscPatch },
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{ FlatImage_TryCreate, ETextureType::Flat },
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{ PatchImage_TryCreate, ETextureType::Any },
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{ EmptyImage_TryCreate, ETextureType::Any },
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{ AutomapImage_TryCreate, ETextureType::MiscPatch },
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};
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if (lumpnum == -1) return nullptr;
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unsigned size = ImageForLump.Size();
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if (size <= (unsigned)lumpnum)
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{
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// Hires textures can be added dynamically to the end of the lump array, so this must be checked each time.
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ImageForLump.Resize(lumpnum + 1);
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for (; size < ImageForLump.Size(); size++) ImageForLump[size] = nullptr;
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}
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// An image for this lump already exists. We do not need another one.
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if (ImageForLump[lumpnum] != nullptr) return ImageForLump[lumpnum];
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auto data = Wads.OpenLumpReader(lumpnum);
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for (size_t i = 0; i < countof(CreateInfo); i++)
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{
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if ((CreateInfo[i].usetype == usetype || CreateInfo[i].usetype == ETextureType::Any))
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{
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auto image = CreateInfo[i].TryCreate(data, lumpnum);
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if (image != nullptr)
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{
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ImageForLump[lumpnum] = image;
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return image;
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}
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}
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}
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return nullptr;
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}
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