7030d8b2b6
- Add separate ImmutablePalette and MutablePalette classes since the distinction is extremely important to HardwarePalette. - Keep a cache of palettes in HardwarePalette to avoid reallocation them every time ApplyModifiers is called. - Palettes that are not allowed to be modified are copied to the buffer once when added, rather than every time ApplyModifiers is called. - The AdjustPalette method now takes a read-only dictionary to prevent the dictionary being messed with. - Added a constant for the palette size to remove its usage as a magic number in several areas. - The ColorPreviewManagerWidget is annoying in that it needs to actually permanently update a palette after it has been added. To allow this, HardwarePalette now allows a palette to be replaced after initialization. The WorldRenderer therefore now also updates the PaletteReference it created earlier with the new palette to prevent stale data being used elsewhere.
118 lines
3.6 KiB
C#
118 lines
3.6 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using OpenRA.Traits;
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namespace OpenRA.Graphics
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{
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public class HardwarePalette
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{
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public const int MaxPalettes = 256;
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public ITexture Texture { get; private set; }
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readonly Dictionary<string, ImmutablePalette> palettes = new Dictionary<string, ImmutablePalette>();
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readonly Dictionary<string, MutablePalette> modifiablePalettes = new Dictionary<string, MutablePalette>();
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readonly IReadOnlyDictionary<string, MutablePalette> readOnlyModifiablePalettes;
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readonly Dictionary<string, int> indices = new Dictionary<string, int>();
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readonly uint[,] buffer = new uint[Palette.Size, MaxPalettes];
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public HardwarePalette()
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{
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Texture = Game.Renderer.Device.CreateTexture();
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readOnlyModifiablePalettes = modifiablePalettes.AsReadOnly();
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}
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public IPalette GetPalette(string name)
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{
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MutablePalette mutable;
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if (modifiablePalettes.TryGetValue(name, out mutable))
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return mutable.AsReadOnly();
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ImmutablePalette immutable;
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if (palettes.TryGetValue(name, out immutable))
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return immutable;
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throw new InvalidOperationException("Palette `{0}` does not exist".F(name));
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}
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public int GetPaletteIndex(string name)
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{
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int ret;
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if (!indices.TryGetValue(name, out ret))
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throw new InvalidOperationException("Palette `{0}` does not exist".F(name));
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return ret;
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}
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public void AddPalette(string name, ImmutablePalette p, bool allowModifiers)
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{
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if (palettes.Count >= MaxPalettes)
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throw new InvalidOperationException("Limit of {0} palettes reached. Cannot add {1}.".F(MaxPalettes, name));
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if (palettes.ContainsKey(name))
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throw new InvalidOperationException("Palette {0} has already been defined".F(name));
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int index = palettes.Count;
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indices.Add(name, index);
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palettes.Add(name, p);
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if (allowModifiers)
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modifiablePalettes.Add(name, new MutablePalette(p));
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else
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CopyPaletteToBuffer(index, p);
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}
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public void ReplacePalette(string name, IPalette p)
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{
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if (modifiablePalettes.ContainsKey(name))
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CopyPaletteToBuffer(indices[name], modifiablePalettes[name] = new MutablePalette(p));
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else if (palettes.ContainsKey(name))
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CopyPaletteToBuffer(indices[name], palettes[name] = new ImmutablePalette(p));
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else
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throw new InvalidOperationException("Palette `{0}` does not exist".F(name));
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Texture.SetData(buffer);
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}
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public void Initialize()
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{
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CopyModifiablePalettesToBuffer();
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Texture.SetData(buffer);
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}
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void CopyPaletteToBuffer(int index, IPalette p)
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{
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for (var i = 0; i < Palette.Size; i++)
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buffer[i, index] = p[i];
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}
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void CopyModifiablePalettesToBuffer()
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{
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foreach (var kvp in modifiablePalettes)
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CopyPaletteToBuffer(indices[kvp.Key], kvp.Value);
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}
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public void ApplyModifiers(IEnumerable<IPaletteModifier> paletteMods)
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{
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foreach (var mod in paletteMods)
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mod.AdjustPalette(readOnlyModifiablePalettes);
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// Update our texture with the changes.
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CopyModifiablePalettesToBuffer();
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Texture.SetData(buffer);
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// Reset modified palettes back to their original colors, ready for next time.
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foreach (var kvp in modifiablePalettes)
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{
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var originalPalette = palettes[kvp.Key];
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var modifiedPalette = kvp.Value;
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for (var i = 0; i < Palette.Size; i++)
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modifiedPalette[i] = originalPalette[i];
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}
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}
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}
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}
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