- moved palette manager for indexed textures out of glbackend

2025-05-30 00:41:24 +00:00 · 2021-04-05 20:00:21 +02:00 · 2021-04-05 20:00:21 +02:00 · 7c4e9ea87e
commit 7c4e9ea87e
parent 9a46fa7ef0
6 changed files with 53 additions and 44 deletions
--- a/source/core/rendering/hw_palmanager.cpp
+++ b/source/core/rendering/hw_palmanager.cpp
@ -0,0 +1,163 @@
+/*
+** gl_palmanager.cpp
+** Palette management
+**
+**---------------------------------------------------------------------------
+** Copyright 2019 Christoph Oelckers
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions
+** are met:
+**
+** 1. Redistributions of source code must retain the above copyright
+**    notice, this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright
+**    notice, this list of conditions and the following disclaimer in the
+**    documentation and/or other materials provided with the distribution.
+** 3. The name of the author may not be used to endorse or promote products
+**    derived from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**---------------------------------------------------------------------------
+**
+**
+*/
+
+#include <memory>
+#include "m_crc32.h"
+#include "hw_palmanager.h"
+
+#include "resourcefile.h"
+#include "imagehelpers.h"
+#include "v_font.h"
+#include "palette.h"
+#include "build.h"
+#include "v_video.h"
+
+static PaletteManager* palmanager;
+
+//===========================================================================
+//
+// This class manages the hardware data for the indexed render mode.
+//
+//===========================================================================
+
+PaletteManager::~PaletteManager()
+{
+	DeleteAll();
+}
+
+//===========================================================================
+//
+// 
+//
+//===========================================================================
+
+void PaletteManager::DeleteAll()
+{
+	for (auto& pal : palettetextures)
+	{
+		if (pal) delete pal;
+		pal = nullptr;
+	}
+	for (auto& pal : lookuptextures)
+	{
+		if (pal) delete pal;
+		pal = nullptr;
+	}
+}
+
+//===========================================================================
+//
+// 
+//
+//===========================================================================
+
+IHardwareTexture *PaletteManager::GetPalette(int index)
+{
+	auto palettedata = GPalette.GetTranslation(Translation_BasePalettes, index);
+	if (palettedata == nullptr)
+	{
+		index = 0;
+		palettedata = GPalette.GetTranslation(Translation_BasePalettes, index);
+	};
+
+	if (palettedata)
+	{
+		if (palettetextures[index] == nullptr)
+		{
+			auto p = screen->CreateHardwareTexture(4);
+			p->CreateTexture((uint8_t*)palettedata->Palette, 256, 1, 15, false, "Palette");
+			palettetextures[index] = p;
+		}
+		return palettetextures[index];
+	}
+	I_FatalError("palette not initialized for palette emulated render mode");	// we cannot continue if this happens.
+	return nullptr;
+}
+
+//===========================================================================
+//
+// 
+//
+//===========================================================================
+
+IHardwareTexture* PaletteManager::GetLookup(int index)
+{
+	if (!lookups.checkTable(index)) index = 0;
+	if (lookups.checkTable(index))
+	{
+		if (lookuptextures[index] == nullptr)
+		{
+			auto p = screen->CreateHardwareTexture(1);
+
+			// Perform a 0<->255 index swap. The lookup tables are still the original data.
+			TArray<uint8_t> lookup(numshades * 256, true);
+			memcpy(lookup.Data(), lookups.getTable(index), lookup.Size());
+			for (int i = 0; i < numshades; i++)
+			{
+				auto p = &lookup[i * 256];
+				p[255] = p[0];
+				p[0] = 0;
+				for (int v = 1; v <= 255; v++) if (p[v] == 0) p[v] = 255;
+			}
+			p->CreateTexture(lookup.Data(), 256, numshades, 15, false, "PaletteLookup");
+			lookuptextures[index] = p;
+		}
+		return lookuptextures[index];
+	}
+	I_FatalError("palette lookups not initialized for palette emulated render mode");	// we cannot continue if this happens.
+	return nullptr;
+}
+
+//===========================================================================
+//
+// 
+//
+//===========================================================================
+
+IHardwareTexture *setpalettelayer(int layer, int translation)
+{
+	if (!palmanager) palmanager = new PaletteManager;
+	if (layer == 1)
+		return palmanager->GetPalette(GetTranslationType(translation) - Translation_Remap);
+	else if (layer == 2)
+		return palmanager->GetLookup(GetTranslationIndex(translation));
+	else return nullptr;
+}
+
+void ClearPalManager()
+{
+	if (palmanager) delete palmanager;
+	palmanager = nullptr;
+}