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https://github.com/ZDoom/Raze.git
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316 lines
9.3 KiB
C++
316 lines
9.3 KiB
C++
/*
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** gl_palmanager.cpp
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** Palette management
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**
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**---------------------------------------------------------------------------
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** Copyright 2019 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 <memory>
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#include "m_crc32.h"
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#include "glad/glad.h"
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#include "glbackend.h"
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#include "gl_samplers.h"
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#include "gl_shader.h"
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#include "baselayer.h"
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#include "resourcefile.h"
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//===========================================================================
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//
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// The palette manager will contain all palettes being used for texture
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// creation. It is also responsible for creating palette textures for indexed
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// rendering.
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//
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//===========================================================================
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PaletteManager::~PaletteManager()
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{
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DeleteAll();
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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 PaletteManager::DeleteAll()
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{
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for (auto& pal : palettes)
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{
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if (pal.paltexture) delete pal.paltexture;
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}
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if (transientpalette.paltexture) delete transientpalette.paltexture;
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if (palswapTexture) delete palswapTexture;
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palswapTexture = nullptr;
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transientpalette.paltexture = nullptr;
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transientpalette.crc32 = -1;
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palettes.Reset();
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palswaps.Reset();
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lastindex = -1;
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memset(palettemap, 0, sizeof(palettemap));
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memset(palswapmap, 0, sizeof(palswapmap));
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memset(addshade, 0, sizeof(addshade));
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memset(mulshade, 0, sizeof(mulshade));
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numshades = 1;
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}
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//===========================================================================
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//
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// Adds a new palette while looking for duplicates.
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//
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//===========================================================================
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unsigned PaletteManager::FindPalette(const uint8_t *paldata)
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{
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auto crc32 = CalcCRC32(paldata, 1024);
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for (unsigned int i = 0; i< palettes.Size(); i++)
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{
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if (crc32 == palettes[i].crc32)
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{
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if (!memcmp(paldata, palettes[i].colors, 1024))
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{
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return i;
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}
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}
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}
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PaletteData pd;
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memcpy(pd.colors, paldata, 1024);
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pd.crc32 = crc32;
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pd.paltexture = nullptr;
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pd.shadesdone = false;
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return palettes.Push(pd);
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}
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//===========================================================================
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//
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// Adds a new palette while looking for duplicates.
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//
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//===========================================================================
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unsigned PaletteManager::FindPalswap(const uint8_t* paldata)
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{
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auto crc32 = CalcCRC32(paldata, 256 * numshades);
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for (unsigned int i = 0; i < palswaps.Size(); i++)
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{
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if (crc32 == palswaps[i].crc32)
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{
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if (!memcmp(paldata, palswaps[i].lookup, 256 * numshades))
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{
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return i;
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}
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}
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}
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PalswapData pd;
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pd.lookup = paldata;
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pd.crc32 = crc32;
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return palswaps.Push(pd);
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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 PaletteManager::SetPalette(int index, const uint8_t* data, bool transient)
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{
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// New palettes may only be added if declared transient or on startup.
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// Otherwise this would require a renderer reset to flush out the textures affected by the change.
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if (index < 0 || index > 255) return; // invalid index - ignore.
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if (transient)
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{
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// Transient palettes do not get stored in the list because it is assumed that they won't be needed for long.
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// Only clear the texture if the palette is different.
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if (memcmp(data, transientpalette.colors, 1024))
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{
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memcpy(transientpalette.colors, data, 1024);
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if (transientpalette.paltexture) delete transientpalette.paltexture;
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transientpalette.paltexture = nullptr;
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}
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transientpalette.crc32 = index;
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palettemap[index] = 0;
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return;
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}
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palettemap[index] = FindPalette(data);
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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 PaletteManager::BindPalette(int index)
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{
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if (index == transientpalette.crc32)
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{
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if (transientpalette.paltexture == nullptr)
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{
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auto p = GLInterface.NewTexture();
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p->CreateTexture(256, 1, false, false);
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p->LoadTexture((uint8_t*)transientpalette.colors);
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p->SetSampler(Sampler2DNoFilter);
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transientpalette.paltexture = p;
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}
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inst->BindTexture(2, transientpalette.paltexture);
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}
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else if (palettemap[index] < palettes.Size())
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{
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auto uindex = palettemap[index];
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if (uindex != lastindex)
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{
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lastindex = uindex;
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if (palettes[uindex].paltexture == nullptr)
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{
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auto p = GLInterface.NewTexture();
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p->CreateTexture(256, 1, false, false);
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p->LoadTexture((uint8_t*)palettes[uindex].colors);
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p->SetSampler(Sampler2DNoFilter);
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palettes[uindex].paltexture = p;
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}
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inst->BindTexture(2, palettes[uindex].paltexture);
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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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//
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//===========================================================================
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void PaletteManager::SetPalswapData(int index, const uint8_t* data, int numshades_)
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{
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// New palettes may only be added if declared transient or on startup.
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// Otherwise this would require a renderer reset to flush out the textures affected by the change.
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if (index < 0 || index > 255) return; // invalid index - ignore.
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numshades = numshades_;
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palswapmap[index] = FindPalswap(data);
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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 PaletteManager::UpdatePalswaps(int width, int height)
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{
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if (palswapTexture) delete palswapTexture;
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for (auto& pal : palettes)
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{
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pal.shadesdone = false;
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}
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// recreate it
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vec2f_t polymost1PalswapSize = { width * (1.f / PALSWAP_TEXTURE_SIZE),
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height * (1.f / PALSWAP_TEXTURE_SIZE) };
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vec2f_t polymost1PalswapInnerSize = { (width - 1) * (1.f / PALSWAP_TEXTURE_SIZE),
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(height - 1) * (1.f / PALSWAP_TEXTURE_SIZE) };
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inst->SetPalswapSize(&polymost1PalswapInnerSize.x);
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}
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void GLInstance::SetPalswap(int index)
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{
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float v1 = index * renderState.PalswapSize[0];
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float v2 = floorf(v1);
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renderState.PalswapPos[0] = v1 - v2 + (0.5f / PALSWAP_TEXTURE_SIZE);
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renderState.PalswapPos[1] = v2 * renderState.PalswapSize[1] + (0.5f / PALSWAP_TEXTURE_SIZE);
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}
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#if 0
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static void polymost_setPalswapSize(uint32_t width, uint32_t height)
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{
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if (currentShaderProgramID != polymost1CurrentShaderProgramID)
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return;
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}
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#endif
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// No point porting this, it's too much work for a short lived solution.
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#if 0
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char allocateTexture = !palswapTextureID;
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if (allocateTexture)
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{
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G etTextureHandle(&palswapTextureID);
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}
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g lBindTexture(GL _TEXTURE_2D, palswapTextureID);
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if (allocateTexture)
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{
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g lTexParameteri(GL _TEXTURE_2D, GL _TEXTURE_BASE_LEVEL, 0);
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g lTexParameteri(GL _TEXTURE_2D, GL _TEXTURE_MAX_LEVEL, 0);
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g lTexParameteri(GL _TEXTURE_2D, GL _TEXTURE_MAG_FILTER, GL _NEAREST);
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g lTexParameteri(GL _TEXTURE_2D, GL _TEXTURE_MIN_FILTER, GL _NEAREST);
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g lTexParameteri(GL _TEXTURE_2D, GL _TEXTURE_MAX_ANISOTROPY_EXT, 1);
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g lTexParameteri(GL _TEXTURE_2D, GL _TEXTURE_WRAP_S, GL _CLAMP_TO_EDGE);
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g lTexParameteri(GL _TEXTURE_2D, GL _TEXTURE_WRAP_T, GL _CLAMP_TO_EDGE);
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g lTexImage2D(GL _TEXTURE_2D, 0, GL _RED, PALSWAP_TEXTURE_SIZE, PALSWAP_TEXTURE_SIZE, 0, GL _RED, GL _UNSIGNED_BYTE, NULL);
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}
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int32_t column = palookupnum % (PALSWAP_TEXTURE_SIZE / 256);
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int32_t row = palookupnum / (PALSWAP_TEXTURE_SIZE / 256);
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int32_t rowOffset = (numshades + 1) * row;
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if (rowOffset > PALSWAP_TEXTURE_SIZE)
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{
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OSD_Printf("Polymost: palswaps are too large for palswap tilesheet!\n");
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return;
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}
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g lTexSubImage2D(GL _TEXTURE_2D, 0, 256 * column, rowOffset, 256, numshades + 1, GL _RED, GL _UNSIGNED_BYTE, palookup[palookupnum]);
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polymost_setPalswapSize(256, numshades + 1);
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static void polymost_updatePalette()
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{
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if (videoGetRenderMode() != REND_POLYMOST)
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{
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return;
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}
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polymost_setPalswap(globalpal);
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polymost_setShade(globalshade);
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}
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#endif
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