mirror of
https://github.com/ZDoom/raze-gles.git
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847fa48724
In particular this means to remove the option to disable widescreen aspect ratios. The way this was handled makes no sense with the current render backend. The aspect ratio code will have to be redone entirely to properly obey the backend's settings.
508 lines
16 KiB
C++
508 lines
16 KiB
C++
/*
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** palette.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright 2019-2020 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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#include "build.h"
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#include "imagehelpers.h"
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#include "palette.h"
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#include "superfasthash.h"
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#include "common.h"
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#include "memarena.h"
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#include "palettecontainer.h"
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#include "palutil.h"
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#include "colormatcher.h"
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#include "m_swap.h"
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#include "v_colortables.h"
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#include "v_font.h"
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#include "printf.h"
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#include "../../glbackend/glbackend.h"
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LookupTableInfo lookups;
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//==========================================================================
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//
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// Adds a palette to the global list of base palettes
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//
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//==========================================================================
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void paletteSetColorTable(int32_t id, uint8_t const* table, bool notransparency, bool twodonly)
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{
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if (id == 0)
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{
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GPalette.SetPalette(table, 255);
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GPalette.BaseColors[255] = 0;
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BuildTransTable(GPalette.BaseColors);
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}
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FRemapTable remap;
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remap.AddColors(0, 256, table, -1);
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if (!notransparency)
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{
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remap.Palette[255] = 0;
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remap.Remap[255] = 255;
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}
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remap.TwodOnly = twodonly; //
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remap.NoTransparency = notransparency;
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GPalette.UpdateTranslation(TRANSLATION(Translation_BasePalettes, id), &remap);
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}
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//==========================================================================
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//
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// loads the main palette file.
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//
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//==========================================================================
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void paletteLoadFromDisk(void)
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{
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for (auto & x : glblend)
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x = defaultglblend;
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auto fil = fileSystem.OpenFileReader("palette.dat");
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if (!fil.isOpen())
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return;
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// Base palette
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uint8_t palette[768];
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if (768 != fil.Read(palette, 768))
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return;
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for (auto & pe : palette)
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pe <<= 2;
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paletteSetColorTable(0, palette, false, false);
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paletteloaded |= PALETTE_MAIN;
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// LameDuke and Witchaven use an older variant.
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if (fil.GetLength() == 41600)
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{
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numshades = 32;
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}
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else
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{
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// Shade tables
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numshades = fil.ReadInt16();
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if (numshades <= 1)
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{
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Printf("Warning: Invalid number of shades in \"palette.dat\"!\n");
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numshades = 0;
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return;
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}
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}
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// Read base shade table (lookuptables 0).
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int length = numshades * 256;
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auto buffer = fil.Read(length);
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if (buffer.Size() != length) return;
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lookups.setTable(0, buffer.Data());
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paletteloaded |= PALETTE_SHADE | PALETTE_TRANSLUC;
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}
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//==========================================================================
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//
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// postprocess the palette data after everything has been loaded
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//
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//==========================================================================
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void LookupTableInfo::postLoadTables(void)
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{
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globalpal = 0;
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GPalette.GenerateGlobalBrightmapFromColormap(getTable(0), numshades);
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// Try to detect fullbright translations. Unfortunately this cannot be used to detect fade strength because of loss of color precision in the palette map.
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for (int j = 0; j < MAXPALOOKUPS; j++)
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{
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auto lookup = tables[j].Shades;
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if (lookup.Len() > 0)
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{
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auto basetable = (uint8_t*)lookup.GetChars();
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auto midtable = basetable + ((numshades / 2) - 1) * 256;
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int lumibase = 0, lumimid = 0;
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for (int i = 1; i < 255; i++) // intentionally leave out 0 and 255, because the table here is not translucency adjusted to the palette.
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{
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lumibase += GPalette.BaseColors[basetable[i]].Amplitude();
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lumimid += GPalette.BaseColors[midtable[i]].Amplitude();
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}
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float divider = float(lumimid) / float(lumibase);
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bool isbright = false;
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if (divider > 0.9)
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{
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tables[j].ShadeFactor = 1 / 10000.f; // this translation is fullbright.
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}
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else
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{
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if (tables[j].ShadeFactor == 0) tables[j].ShadeFactor = 1.f;
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// Fullbright lookups do not need brightmaps.
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auto fog = tables[j].FadeColor;
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if (GPalette.HasGlobalBrightmap && fog.r == 0 && fog.g == 0 && fog.b == 0)
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{
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isbright = true;
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// A translation is fullbright only if all fullbright colors in the base table are mapped to another fullbright color.
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auto brightmap = GPalette.GlobalBrightmap.Remap;
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for (int i = 1; i < 255; i++) // This also ignores entries 0 and 255 for the same reason as above.
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{
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int map = basetable[i];
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if (brightmap[i] == GPalette.WhiteIndex && brightmap[map] != GPalette.WhiteIndex)
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{
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isbright = false;
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break;
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}
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}
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}
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}
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tables[j].hasBrightmap = isbright;
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DPrintf(DMSG_NOTIFY, "Lookup %d is %sbright\n", j, isbright ? "" : "not ");
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}
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}
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}
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//==========================================================================
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//
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// load the lookup tables from lookup.dat
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//
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//==========================================================================
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int32_t LookupTableInfo::loadTable(FileReader &fp)
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{
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uint8_t buffer[256];
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int numlookups = fp.ReadUInt8();
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if (numlookups < 1)
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return -1;
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for (int j=0; j<numlookups; j++)
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{
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int palnum = fp.ReadUInt8();
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if (256 != fp.Read(buffer, 256))
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return -1;
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if (palnum < 0 || palnum >= 256 - RESERVEDPALS)
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{
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Printf("ERROR: attempt to load lookup at invalid index %d\n", palnum);
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}
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else
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makeTable(palnum, buffer, 0, 0, 0, 0);
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}
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return 0;
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}
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//==========================================================================
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//
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// Find a gap of four consecutive unused pal numbers to generate fog shade tables.
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//
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//==========================================================================
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void LookupTableInfo::setupDefaultFog(void)
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{
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for (int j = 1; j <= 255 - 3; j++)
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{
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if (tables[j].Shades.IsEmpty() && tables[j+1].Shades.IsEmpty() && tables[j + 2].Shades.IsEmpty() && tables[j + 3].Shades.IsEmpty())
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{
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makeTable(j, NULL, 60, 60, 60, 1);
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makeTable(j + 1, NULL, 60, 0, 0, 1);
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makeTable(j + 2, NULL, 0, 60, 0, 1);
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makeTable(j + 3, NULL, 0, 0, 60, 1);
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break;
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}
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}
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}
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//==========================================================================
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//
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// post process the lookup tables once everything has been loaded
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//
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//==========================================================================
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void LookupTableInfo::postLoadLookups()
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{
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int numpalettes = GPalette.NumTranslations(Translation_BasePalettes);
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if (numpalettes == 0) return;
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auto basepalette = GPalette.GetTranslation(Translation_BasePalettes, 0);
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for (int i = 0; i < numpalettes; i++)
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{
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auto palette = GPalette.GetTranslation(Translation_BasePalettes, i);
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if (!palette) continue;
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if (palette->TwodOnly)
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{
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GPalette.CopyTranslation(TRANSLATION(Translation_Remap + i, 0), TRANSLATION(Translation_BasePalettes, i));
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}
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else
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{
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for (int l = 0; l < MAXPALOOKUPS; l++)
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{
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if (!tables[l].Shades.IsEmpty())
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{
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const uint8_t* lookup = (uint8_t*)tables[l].Shades.GetChars();
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FRemapTable remap;
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if (i == 0 || (palette != basepalette && !palette->TwodOnly))
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{
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memcpy(remap.Remap, lookup, 256);
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for (int j = 0; j < 256; j++)
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{
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remap.Palette[j] = palette->Palette[remap.Remap[j]];
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}
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remap.NumEntries = 256;
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GPalette.UpdateTranslation(TRANSLATION(i + Translation_Remap, l), &remap);
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}
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}
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}
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}
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}
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// Swap colors 0 and 255. Note that color 255 may not be translucent!
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auto colorswap = [](FRemapTable* remap)
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{
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std::swap(remap->Palette[255], remap->Palette[0]);
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std::swap(remap->Remap[255], remap->Remap[0]);
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for (auto& c : remap->Remap)
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{
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if (c == 0) c = 255;
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else if (c == 255) c = 0;
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}
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if (!remap->NoTransparency)
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{
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remap->Remap[0] = 0;
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remap->Palette[0] = 0;
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}
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};
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for (auto remap : GPalette.uniqueRemaps)
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{
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if (!remap->ForFont) colorswap(remap);
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}
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colorswap(&GPalette.GlobalBrightmap);
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std::swap(GPalette.BaseColors[0], GPalette.BaseColors[255]);
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}
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//==========================================================================
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//
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// set a lookup table from external data
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//
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//==========================================================================
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int32_t LookupTableInfo::setTable(int palnum, const uint8_t *shtab)
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{
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if (shtab != NULL)
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{
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int length = numshades * 256;
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tables[palnum].Shades = FString((const char*)shtab, length);
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}
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return 0;
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}
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//==========================================================================
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//
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// creates a lookup table from scratch
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//
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//==========================================================================
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void LookupTableInfo::makeTable(int palnum, const uint8_t *remapbuf, int r, int g, int b, bool noFloorPal)
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{
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uint8_t idmap[256];
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// NOTE: palnum==0 is allowed
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if (paletteloaded == 0 || (unsigned)palnum >= MAXPALOOKUPS)
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return;
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tables[palnum].noFloorPal = noFloorPal;
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if (remapbuf == nullptr)
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{
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if (r == 0 && g == 0 && b == 0)
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{
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clearTable(palnum);
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return;
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}
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for (int i = 0; i < 256; i++) idmap[i] = i;
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remapbuf = idmap;
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}
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int length = numshades * 256;
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auto p = tables[palnum].Shades.LockNewBuffer(length);
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if (r == 0 && g == 0 && b == 0)
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{
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// "black fog"/visibility case -- only remap color indices
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auto src = getTable(0);
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for (int j = 0; j < numshades; j++)
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for (int i = 0; i < 256; i++)
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{
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p[256 * j + i] = src[256 * j + remapbuf[i]];
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}
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}
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else
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{
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// colored fog case
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for (int i = 0; i < numshades; i++)
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{
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int colfac = (numshades - i);
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for (int j = 0; j < 256; j++)
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{
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PalEntry pe = GPalette.BaseColors[remapbuf[j]];
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p[256 * i + j] = ColorMatcher.Pick(
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(pe.r * colfac + r * i) / numshades,
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(pe.g * colfac + g * i) / numshades,
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(pe.b * colfac + b * i) / numshades);
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}
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}
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}
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tables[palnum].FadeColor.r = r;
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tables[palnum].FadeColor.g = g;
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tables[palnum].FadeColor.b = b;
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tables[palnum].FadeColor.a = 1;
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}
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//==========================================================================
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//
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// hicsetpalettetint(pal,r,g,b,sr,sg,sb,effect)
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// The tinting values represent a mechanism for emulating the effect of global sector
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// palette shifts on true-colour textures and only true-colour textures.
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// effect bitset: 1 = greyscale, 2 = invert
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//
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//==========================================================================
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void LookupTableInfo::setPaletteTint(int palnum, int r, int g, int b, int sr, int sg, int sb, int flags)
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{
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if ((unsigned)palnum >= MAXPALOOKUPS) return;
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auto &lookup = tables[palnum];
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lookup.tintColor = PalEntry(r, g, b);
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lookup.tintShade = PalEntry(sr, sg, sb);
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lookup.tintFlags = flags | TINTF_ENABLE;
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}
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//==========================================================================
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//
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// todo: everything below belongs elsewhere. Move it out
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//
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//==========================================================================
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#include "v_2ddrawer.h"
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uint8_t curbasepal;
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PalEntry palfadergb;
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static int32_t tint_blood_r = 0, tint_blood_g = 0, tint_blood_b = 0;
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glblend_t glblend[MAXBLENDTABS];
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void videoSetPalette(int palid)
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{
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curbasepal = (GPalette.GetTranslation(Translation_BasePalettes, palid) == nullptr)? 0 : palid;
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}
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//==========================================================================
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//
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// map Build blend definitions to actual render style / alpha combos.
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//
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//==========================================================================
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glblend_t const nullglblend =
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{
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{
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{ 1.f, STYLEALPHA_One, STYLEALPHA_Zero, 0 },
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{ 1.f, STYLEALPHA_One, STYLEALPHA_Zero, 0 },
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},
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};
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glblend_t const defaultglblend =
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{
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{
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{ 2.f / 3.f, STYLEALPHA_Src, STYLEALPHA_InvSrc, 0 },
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{ 1.f / 3.f, STYLEALPHA_Src, STYLEALPHA_InvSrc, 0 },
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},
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};
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FRenderStyle GetRenderStyle(int blend, int def)
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{
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FRenderStyle rs;
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rs.BlendOp = STYLEOP_Add;
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auto glbdef = &glblend[blend].def[def];
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rs.SrcAlpha = glbdef->src;
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rs.DestAlpha = glbdef->dst;
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rs.Flags = 0;
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return rs;
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}
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void SetRenderStyleFromBlend(uint8_t enable, uint8_t blend, uint8_t def)
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{
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if (!enable)
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{
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GLInterface.SetRenderStyle(LegacyRenderStyles[STYLE_Translucent]);
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return;
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}
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auto rs = GetRenderStyle(blend, def);
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GLInterface.SetRenderStyle(rs);
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}
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float GetAlphaFromBlend(uint32_t method, uint32_t blend)
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{
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return method == DAMETH_TRANS1 || method == DAMETH_TRANS2 ? glblend[blend].def[method - DAMETH_TRANS1].alpha : 1.f;
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}
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//==========================================================================
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//
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// Fullscreen blend effects
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//
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//==========================================================================
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void DrawFullscreenBlends()
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{
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// These get prepended to the 2D drawer so they must be submitted in reverse order of drawing.
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if (tint_blood_r | tint_blood_g | tint_blood_b)
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{
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PalEntry color2(255, std::max(-tint_blood_r, 0), std::max(-tint_blood_g, 0), std::max(-tint_blood_b, 0));
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twod->AddColorOnlyQuad(0, 0, twod->GetWidth(), twod->GetHeight(), color2, &LegacyRenderStyles[STYLE_Subtract], true);
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PalEntry color(255, std::max(tint_blood_r, 0), std::max(tint_blood_g, 0), std::max(tint_blood_b, 0));
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twod->AddColorOnlyQuad(0, 0, twod->GetWidth(), twod->GetHeight(), color, &LegacyRenderStyles[STYLE_Add], true);
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}
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if (palfadergb.a > 0)
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{
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twod->AddColorOnlyQuad(0, 0, twod->GetWidth(), twod->GetHeight(), palfadergb, &LegacyRenderStyles[STYLE_Translucent], true);
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}
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}
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void videoTintBlood(int32_t r, int32_t g, int32_t b)
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{
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tint_blood_r = r;
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tint_blood_g = g;
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tint_blood_b = b;
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}
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