mirror of
https://github.com/fadden/6502bench.git
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30cb96f737
Picked some names to fill the gaps in the language card I/O location list. Tweaked the hi-res sprite sheet slightly.
627 lines
31 KiB
C#
627 lines
31 KiB
C#
/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Collections.ObjectModel;
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using PluginCommon;
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namespace RuntimeData.Apple {
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/// <summary>
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/// Visualizer for Apple II hi-res bitmaps.
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/// </summary>
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public class VisHiRes : MarshalByRefObject, IPlugin, IPlugin_Visualizer {
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// IPlugin
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public string Identifier {
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get { return "Apple II Hi-Res Graphic Visualizer"; }
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}
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private IApplication mAppRef;
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private byte[] mFileData;
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private AddressTranslate mAddrTrans;
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// Visualization identifiers; DO NOT change or projects that use them will break.
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private const string VIS_GEN_BITMAP = "apple2-hi-res-bitmap";
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private const string VIS_GEN_BITMAP_GRID = "apple2-hi-res-bitmap-grid";
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private const string VIS_GEN_BITMAP_FONT = "apple2-hi-res-bitmap-font";
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private const string VIS_GEN_HR_SCREEN = "apple2-hi-res-screen";
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private const string P_OFFSET = "offset";
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private const string P_BYTE_WIDTH = "byteWidth";
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private const string P_HEIGHT = "height";
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private const string P_COL_STRIDE = "colStride";
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private const string P_ROW_STRIDE = "rowStride";
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private const string P_CELL_STRIDE = "cellStride";
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private const string P_IS_COLOR = "isColor";
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private const string P_IS_FIRST_ODD = "isFirstOdd";
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private const string P_IS_HIGH_BIT_FLIPPED = "isHighBitFlipped";
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private const string P_COLOR_CONV_MODE = "colorConvMode";
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private const string P_ITEM_BYTE_WIDTH = "itemByteWidth";
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private const string P_ITEM_HEIGHT = "itemHeight";
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private const string P_COUNT = "count";
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private const int MAX_DIM = 4096;
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// Visualization descriptors.
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private VisDescr[] mDescriptors = new VisDescr[] {
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new VisDescr(VIS_GEN_BITMAP, "Apple II Hi-Res Bitmap", VisDescr.VisType.Bitmap,
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new VisParamDescr[] {
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new VisParamDescr("File offset (hex)",
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P_OFFSET, typeof(int), 0, 0x00ffffff, VisParamDescr.SpecialMode.Offset, 0),
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new VisParamDescr("Width (in bytes)",
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P_BYTE_WIDTH, typeof(int), 1, 256, 0, 1),
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new VisParamDescr("Height",
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P_HEIGHT, typeof(int), 1, 1024, 0, 1),
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new VisParamDescr("Column stride (bytes)",
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P_COL_STRIDE, typeof(int), 0, 1024, 0, 0),
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new VisParamDescr("Row stride (bytes)",
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P_ROW_STRIDE, typeof(int), 0, 1024, 0, 0),
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new VisParamDescr("Color",
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P_IS_COLOR, typeof(bool), 0, 0, 0, true),
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new VisParamDescr("First col odd",
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P_IS_FIRST_ODD, typeof(bool), 0, 0, 0, false),
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new VisParamDescr("High bit flipped",
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P_IS_HIGH_BIT_FLIPPED, typeof(bool), 0, 0, 0, false),
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//new VisParamDescr("Color conv mode",
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// P_COLOR_CONV_MODE, typeof(int), (int)ColorMode.SimpleColor,
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// (int)ColorMode.IIgsRGB, 0, (int)ColorMode.SimpleColor),
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//new VisParamDescr("Test Float",
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// "floaty", typeof(float), -5.0f, 5.0f, 0, 0.1f),
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}),
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new VisDescr(VIS_GEN_BITMAP_GRID, "Apple II Hi-Res Sprite Sheet", VisDescr.VisType.Bitmap,
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new VisParamDescr[] {
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new VisParamDescr("File offset (hex)",
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P_OFFSET, typeof(int), 0, 0x00ffffff, VisParamDescr.SpecialMode.Offset, 0),
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new VisParamDescr("Cell width (in bytes)",
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P_ITEM_BYTE_WIDTH, typeof(int), 1, 40, 0, 1),
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new VisParamDescr("Cell height",
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P_ITEM_HEIGHT, typeof(int), 1, 192, 0, 1),
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new VisParamDescr("Column stride (bytes)",
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P_COL_STRIDE, typeof(int), 0, 1024, 0, 0),
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new VisParamDescr("Row stride (bytes)",
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P_ROW_STRIDE, typeof(int), 0, 1024, 0, 0),
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new VisParamDescr("Cell stride (bytes)",
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P_CELL_STRIDE, typeof(int), 0, 4096, 0, 0),
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new VisParamDescr("Number of items",
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P_COUNT, typeof(int), 1, 1024, 0, 64),
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new VisParamDescr("Color",
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P_IS_COLOR, typeof(bool), 0, 0, 0, true),
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new VisParamDescr("First col odd",
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P_IS_FIRST_ODD, typeof(bool), 0, 0, 0, false),
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new VisParamDescr("High bit flipped",
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P_IS_HIGH_BIT_FLIPPED, typeof(bool), 0, 0, 0, false),
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}),
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new VisDescr(VIS_GEN_BITMAP_FONT, "Apple II Hi-Res Bitmap Font", VisDescr.VisType.Bitmap,
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new VisParamDescr[] {
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new VisParamDescr("File offset (hex)",
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P_OFFSET, typeof(int), 0, 0x00ffffff, VisParamDescr.SpecialMode.Offset, 0),
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new VisParamDescr("Item width (in bytes)",
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P_ITEM_BYTE_WIDTH, typeof(int), 1, 40, 0, 1),
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new VisParamDescr("Item height",
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P_ITEM_HEIGHT, typeof(int), 1, 192, 0, 8),
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new VisParamDescr("Number of items",
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P_COUNT, typeof(int), 1, 256, 0, 96),
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}),
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new VisDescr(VIS_GEN_HR_SCREEN, "Apple II Hi-Res Screen Image", VisDescr.VisType.Bitmap,
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new VisParamDescr[] {
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new VisParamDescr("File offset (hex)",
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P_OFFSET, typeof(int), 0, 0x00ffffff, VisParamDescr.SpecialMode.Offset, 0),
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new VisParamDescr("Color",
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P_IS_COLOR, typeof(bool), 0, 0, 0, true),
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}),
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};
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// IPlugin
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public void Prepare(IApplication appRef, byte[] fileData, AddressTranslate addrTrans) {
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mAppRef = appRef;
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mFileData = fileData;
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mAddrTrans = addrTrans;
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}
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// IPlugin
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public void Unprepare() {
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mAppRef = null;
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mFileData = null;
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mAddrTrans = null;
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}
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// IPlugin_Visualizer
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public VisDescr[] GetVisGenDescrs() {
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// We're using a static set, but it could be generated based on file contents.
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// Confirm that we're prepared.
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if (mFileData == null) {
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return null;
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}
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return mDescriptors;
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}
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// IPlugin_Visualizer
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public IVisualization2d Generate2d(VisDescr descr,
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ReadOnlyDictionary<string, object> parms) {
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switch (descr.Ident) {
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case VIS_GEN_BITMAP:
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return GenerateBitmap(parms);
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case VIS_GEN_BITMAP_GRID:
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return GenerateBitmapGrid(parms);
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case VIS_GEN_BITMAP_FONT:
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return GenerateBitmapFont(parms);
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case VIS_GEN_HR_SCREEN:
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return GenerateScreen(parms);
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default:
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mAppRef.ReportError("Unknown ident " + descr.Ident);
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return null;
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}
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}
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private IVisualization2d GenerateBitmap(ReadOnlyDictionary<string, object> parms) {
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int offset = Util.GetFromObjDict(parms, P_OFFSET, 0);
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int byteWidth = Util.GetFromObjDict(parms, P_BYTE_WIDTH, 1); // width ignoring colStride
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int height = Util.GetFromObjDict(parms, P_HEIGHT, 1);
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int colStride = Util.GetFromObjDict(parms, P_COL_STRIDE, 0);
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int rowStride = Util.GetFromObjDict(parms, P_ROW_STRIDE, 0);
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bool isColor = Util.GetFromObjDict(parms, P_IS_COLOR, true);
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bool isFirstOdd = Util.GetFromObjDict(parms, P_IS_FIRST_ODD, false);
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bool isHighBitFlipped = Util.GetFromObjDict(parms, P_IS_HIGH_BIT_FLIPPED, false);
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int colorConvMode = !isColor ? (int)ColorMode.Mono :
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Util.GetFromObjDict(parms, P_COLOR_CONV_MODE, (int)ColorMode.SimpleColor);
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// We allow the stride entries to be zero to indicate a "dense" bitmap.
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if (colStride == 0) {
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colStride = 1;
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}
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if (rowStride == 0) {
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rowStride = byteWidth * colStride;
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}
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if (offset < 0 || offset >= mFileData.Length ||
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byteWidth <= 0 || byteWidth > MAX_DIM ||
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height <= 0 || height > MAX_DIM) {
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// the UI should flag these based on range (and ideally wouldn't have called us)
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mAppRef.ReportError("Invalid parameter");
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return null;
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}
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if (colStride <= 0 || colStride > MAX_DIM) {
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mAppRef.ReportError("Invalid column stride");
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return null;
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}
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// This used to be limited to rowStride >= byteWidth * colStride - (colStride - 1),
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// but that doesn't allow for a 2x8 bitmap in column-major order. In that case
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// you want a row stride of 1 (because each row starts 1 byte farther on) and a
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// column stride of 8 (because each column is separated by 8 bytes).
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if (rowStride < 1 || rowStride > MAX_DIM) {
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mAppRef.ReportError("Invalid row stride");
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return null;
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}
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int lastOffset = offset + rowStride * height - (colStride - 1) - 1;
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if (lastOffset >= mFileData.Length) {
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mAppRef.ReportError("Bitmap runs off end of file (last offset +" +
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lastOffset.ToString("x6") + ")");
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return null;
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}
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VisBitmap8 vb = new VisBitmap8(byteWidth * 7, height);
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SetHiResPalette(vb);
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RenderBitmap(mFileData, offset, byteWidth, height, colStride, rowStride,
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(ColorMode)colorConvMode, isFirstOdd, isHighBitFlipped, vb, 0, 0);
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return vb;
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}
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private IVisualization2d GenerateBitmapGrid(ReadOnlyDictionary<string, object> parms) {
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int offset = Util.GetFromObjDict(parms, P_OFFSET, 0);
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int itemByteWidth = Util.GetFromObjDict(parms, P_ITEM_BYTE_WIDTH, 1);
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int itemHeight = Util.GetFromObjDict(parms, P_ITEM_HEIGHT, 8);
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int colStride = Util.GetFromObjDict(parms, P_COL_STRIDE, 0);
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int rowStride = Util.GetFromObjDict(parms, P_ROW_STRIDE, 0);
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int cellStride = Util.GetFromObjDict(parms, P_CELL_STRIDE, 0);
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int count = Util.GetFromObjDict(parms, P_COUNT, 96);
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bool isColor = Util.GetFromObjDict(parms, P_IS_COLOR, true);
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bool isFirstOdd = Util.GetFromObjDict(parms, P_IS_FIRST_ODD, false);
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bool isHighBitFlipped = Util.GetFromObjDict(parms, P_IS_HIGH_BIT_FLIPPED, false);
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ColorMode colorConvMode = !isColor ? ColorMode.Mono :
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(ColorMode)Util.GetFromObjDict(parms, P_COLOR_CONV_MODE, (int)ColorMode.SimpleColor);
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return GenerateGrid(offset, itemByteWidth, itemHeight, colStride, rowStride,
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cellStride, count, colorConvMode, isFirstOdd, isHighBitFlipped);
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}
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private IVisualization2d GenerateBitmapFont(ReadOnlyDictionary<string, object> parms) {
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int offset = Util.GetFromObjDict(parms, P_OFFSET, 0);
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int itemByteWidth = Util.GetFromObjDict(parms, P_ITEM_BYTE_WIDTH, 1);
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int itemHeight = Util.GetFromObjDict(parms, P_ITEM_HEIGHT, 8);
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int count = Util.GetFromObjDict(parms, P_COUNT, 96);
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return GenerateGrid(offset, itemByteWidth, itemHeight, 0, 0, 0, count,
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ColorMode.Mono, false, false);
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}
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private IVisualization2d GenerateGrid(int offset, int itemByteWidth, int itemHeight,
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int colStride, int rowStride, int cellStride, int count,
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ColorMode colorConvMode, bool isFirstOdd, bool isHighBitFlipped) {
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// We allow the stride entries to be zero to indicate a "dense" bitmap.
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if (colStride == 0) {
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colStride = 1;
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}
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if (rowStride == 0) {
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rowStride = itemByteWidth * colStride;
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}
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if (cellStride == 0) {
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cellStride = rowStride * itemHeight;
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}
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if (offset < 0 || offset >= mFileData.Length ||
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itemByteWidth <= 0 || itemByteWidth > MAX_DIM ||
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itemHeight <= 0 || itemHeight > MAX_DIM ||
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count <= 0 || count > MAX_DIM) {
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// should be caught by editor
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mAppRef.ReportError("Invalid parameter");
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return null;
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}
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if (colStride <= 0 || colStride > MAX_DIM) {
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mAppRef.ReportError("Invalid column stride");
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return null;
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}
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if (rowStride < itemByteWidth * colStride - (colStride - 1) || rowStride > MAX_DIM) {
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mAppRef.ReportError("Invalid row stride");
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return null;
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}
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int lastOffset = offset + (cellStride * (count - 1)) +
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rowStride * itemHeight - (colStride - 1) - 1;
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if (lastOffset >= mFileData.Length) {
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mAppRef.ReportError("Bitmap runs off end of file (last offset +" +
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lastOffset.ToString("x6") + ")");
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return null;
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}
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// Set the number of horizontal cells. For small counts we try to make it square,
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// for larger counts we use a reasonable power of 2.
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int hcells;
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if (count > 128) {
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hcells = 32;
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} else if (count > 64) {
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hcells = 16;
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} else if (count >= 32) {
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hcells = 8;
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} else {
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hcells = (int)Math.Sqrt(count + 1);
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}
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int vcells = (count + hcells - 1) / hcells;
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// Create a bitmap with room for each cell, plus a 1-pixel transparent boundary
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// between them and around the edges.
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VisBitmap8 vb = new VisBitmap8(1 + hcells * itemByteWidth * 7 + hcells,
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1 + vcells * itemHeight + vcells);
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SetHiResPalette(vb);
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int cellx = 1;
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int celly = 1;
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for (int idx = 0; idx < count; idx++) {
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RenderBitmap(mFileData, offset + idx * cellStride,
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itemByteWidth, itemHeight, colStride, rowStride,
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colorConvMode, isFirstOdd, isHighBitFlipped,
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vb, cellx, celly);
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cellx += itemByteWidth * 7 + 1;
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if (cellx == vb.Width) {
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cellx = 1;
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celly += itemHeight + 1;
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}
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}
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return vb;
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}
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private IVisualization2d GenerateScreen(ReadOnlyDictionary<string, object> parms) {
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//const int RAW_IMAGE_SIZE = 0x1ff8;
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const int HR_WIDTH = 280;
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const int HR_BYTE_WIDTH = HR_WIDTH / 7;
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const int HR_HEIGHT = 192;
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int offset = Util.GetFromObjDict(parms, P_OFFSET, 0);
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bool isColor = Util.GetFromObjDict(parms, P_IS_COLOR, true);
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if (offset < 0 || offset >= mFileData.Length) {
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// should be caught by editor
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mAppRef.ReportError("Invalid parameter");
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return null;
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}
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//int lastOffset = offset + RAW_IMAGE_SIZE - 1;
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//if (lastOffset >= mFileData.Length) {
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// mAppRef.ReportError("Bitmap runs off end of file (last offset +" +
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// lastOffset.ToString("x6") + ")");
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// return null;
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//}
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// Linearize the data. To handle programs that move themselves around before
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// executing we use the address translator (e.g. the title screen in Space Eggs
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// is contiguous in memory but split in half in the file). This is slower, but
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// mAddrTrans is a local (not proxy) object, so it's not too bad.
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byte[] buf = new byte[HR_BYTE_WIDTH * HR_HEIGHT];
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int outIdx = 0;
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int baseAddr = mAddrTrans.OffsetToAddress(offset);
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for (int row = 0; row < HR_HEIGHT; row++) {
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// If row is ABCDEFGH, we want pppFGHCD EABAB000 (where p would be $20/$40).
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int low = ((row & 0xc0) >> 1) | ((row & 0xc0) >> 3) | ((row & 0x08) << 4);
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int high = ((row & 0x07) << 2) | ((row & 0x30) >> 4);
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int rowAddr = baseAddr + ((high << 8) | low);
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// Not expecting the data to wrap around, but it's possible.
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rowAddr = (baseAddr & 0xff0000) | (rowAddr & 0xffff);
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for (int col = 0; col < HR_BYTE_WIDTH; col++) {
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int srcOffset = mAddrTrans.AddressToOffset(offset, rowAddr + col);
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if (srcOffset < 0) {
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mAppRef.ReportError("Address $" + (rowAddr + col).ToString("x4") +
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" is outside of file");
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return null;
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}
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buf[outIdx++] = mFileData[srcOffset];
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}
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}
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VisBitmap8 vb = new VisBitmap8(HR_WIDTH, HR_HEIGHT);
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SetHiResPalette(vb);
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RenderBitmap(buf, 0, HR_BYTE_WIDTH, HR_HEIGHT, 1, HR_BYTE_WIDTH,
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isColor ? ColorMode.SimpleColor : ColorMode.Mono, false, false,
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vb, 0, 0);
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return vb;
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}
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private enum ColorMode { Mono, SimpleColor, IIgsRGB };
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/// <summary>
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/// Renders bitmap data.
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/// </summary>
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/// <param name="data">Data source, typically the file data.</param>
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/// <param name="offset">Offset into data of the first byte.</param>
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/// <param name="byteWidth">Width, in bytes, of the data to render. Each byte
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/// represents 7 pixels in the output (more or less).</param>
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/// <param name="height">Height, in lines, of the data to render.</param>
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/// <param name="colStride">Column stride. The number of bytes used to hold each
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/// byte of data. Must be >= 1.</param>
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/// <param name="rowStride">Row stride. The number of bytes used to hold each row
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/// of data. Must be >= (colStride * byteWidth - (colStride - 1)).</param>
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/// <param name="colorMode">Color conversion mode.</param>
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/// <param name="isFirstOdd">If true, render as if we're starting on an odd column.
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/// This affects the colors.</param>
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/// <param name="isHighBitFlipped">If true, render as if the high bit has the
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/// opposite value. This affects the colors.</param>
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/// <param name="vb">Output bitmap object.</param>
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/// <param name="xstart">Initial X position in the output.</param>
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/// <param name="ystart">Initial Y position in the output.</param>
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private void RenderBitmap(byte[] data, int offset, int byteWidth, int height,
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int colStride, int rowStride, ColorMode colorMode, bool isFirstOdd,
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bool isHighBitFlipped, VisBitmap8 vb, int xstart, int ystart) {
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int bx = xstart;
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int by = ystart;
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switch (colorMode) {
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case ColorMode.Mono: {
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// Since we're not displaying this we don't need to worry about
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// half-pixel shifts, and can just convert 7 bits to pixels.
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for (int row = 0; row < height; row++) {
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int colIdx = 0;
|
|
for (int col = 0; col < byteWidth; col++) {
|
|
byte val = data[offset + colIdx];
|
|
for (int bit = 0; bit < 7; bit++) {
|
|
if ((val & 0x01) == 0) {
|
|
vb.SetPixelIndex(bx, by, (int)HiResColors.Black0);
|
|
} else {
|
|
vb.SetPixelIndex(bx, by, (int)HiResColors.White0);
|
|
}
|
|
val >>= 1;
|
|
bx++;
|
|
}
|
|
colIdx += colStride;
|
|
}
|
|
bx = xstart;
|
|
by++;
|
|
offset += rowStride;
|
|
}
|
|
}
|
|
break;
|
|
case ColorMode.SimpleColor: {
|
|
// Straightforward conversion, with no funky border effects. This
|
|
// represents an idealized version of the hardware.
|
|
|
|
// Bits for every byte, plus a couple of "fake" bits on the ends so
|
|
// we don't have to throw range-checks everywhere.
|
|
const int OVER = 2;
|
|
bool[] lineBits = new bool[OVER + byteWidth * 7 + OVER];
|
|
bool[] hiFlags = new bool[OVER + byteWidth * 7 + OVER];
|
|
for (int row = 0; row < height; row++) {
|
|
// Unravel the bits. Note we do each byte "backwards", i.e. the
|
|
// low bit (which is generally considered to be on the right) is
|
|
// the leftmost pixel.
|
|
int idx = OVER; // start past "fake" bits
|
|
int colIdx = 0;
|
|
for (int col = 0; col < byteWidth; col++) {
|
|
byte val = data[offset + colIdx];
|
|
bool hiBitSet = (val & 0x80) != 0;
|
|
|
|
for (int bit = 0; bit < 7; bit++) {
|
|
hiFlags[idx] = hiBitSet ^ isHighBitFlipped;
|
|
lineBits[idx] = (val & 0x01) != 0;
|
|
idx++;
|
|
val >>= 1;
|
|
}
|
|
colIdx += colStride;
|
|
}
|
|
|
|
// Convert to color.
|
|
int lastBit = byteWidth * 7;
|
|
for (idx = OVER; idx < lastBit + OVER; idx++) {
|
|
int colorShift = hiFlags[idx] ? 2 : 0;
|
|
if (lineBits[idx] && (lineBits[idx - 1] || lineBits[idx + 1])) {
|
|
// [X]11 or [1]1X; two 1s in a row is always white
|
|
vb.SetPixelIndex(bx++, by, (byte)HiResColors.White0);
|
|
} else if (lineBits[idx]) {
|
|
// [0]10, color pixel
|
|
bool isOdd = ((idx & 0x01) != 0) ^ isFirstOdd;
|
|
if (isOdd) {
|
|
vb.SetPixelIndex(bx++, by,
|
|
(byte)((int)HiResColors.Green + colorShift));
|
|
} else {
|
|
vb.SetPixelIndex(bx++, by,
|
|
(byte)((int)HiResColors.Purple + colorShift));
|
|
}
|
|
} else if (lineBits[idx - 1] && lineBits[idx + 1]) {
|
|
// [1]01, keep color going
|
|
bool isOdd = ((idx & 0x01) != 0) ^ isFirstOdd;
|
|
if (isOdd) {
|
|
vb.SetPixelIndex(bx++, by,
|
|
(byte)((int)HiResColors.Purple + colorShift));
|
|
} else {
|
|
vb.SetPixelIndex(bx++, by,
|
|
(byte)((int)HiResColors.Green + colorShift));
|
|
}
|
|
} else {
|
|
// [0]0X or [X]01
|
|
vb.SetPixelIndex(bx++, by, (byte)HiResColors.Black0);
|
|
}
|
|
}
|
|
|
|
// move to next row
|
|
bx = xstart;
|
|
by++;
|
|
offset += rowStride;
|
|
}
|
|
}
|
|
break;
|
|
case ColorMode.IIgsRGB: {
|
|
// Color conversion similar to what CiderPress does, but without the
|
|
// half-pixel shift (we're trying to create a 1:1 bitmap, not 1:2).
|
|
//
|
|
// This replicates some of the oddness in Apple IIgs RGB monitor output,
|
|
// but it's not quite right though. For example:
|
|
//
|
|
// observed generated
|
|
// d5 2a: blue [dk blue] purple ... black ...
|
|
// aa 55: orange [yellow] green ... white ...
|
|
// 55 aa: purple [lt blue] blue ... black ...
|
|
// 2a d5: green [brown] orange ... black ...
|
|
//
|
|
// KEGS doesn't seem to try to model this; it shows solid colors with no
|
|
// wackiness. AppleWin in "Color TV" mode shows similar effects, but is
|
|
// much blurrier (by design).
|
|
bool[] lineBits = new bool[byteWidth * 7];
|
|
bool[] hiFlags = new bool[byteWidth * 7]; // overkill, but simpler
|
|
int[] colorBuf = new int[byteWidth * 7];
|
|
for (int row = 0; row < height; row++) {
|
|
// Unravel the bits.
|
|
int idx = 0;
|
|
int colIdx = 0;
|
|
for (int col = 0; col < byteWidth; col++) {
|
|
byte val = data[offset + colIdx];
|
|
bool hiBitSet = (val & 0x80) != 0;
|
|
|
|
for (int bit = 0; bit < 7; bit++) {
|
|
hiFlags[idx] = hiBitSet ^ isHighBitFlipped;
|
|
lineBits[idx] = (val & 0x01) != 0;
|
|
idx++;
|
|
val >>= 1;
|
|
}
|
|
colIdx += colStride;
|
|
}
|
|
|
|
// Convert to color.
|
|
int lastBit = byteWidth * 7;
|
|
for (idx = 0; idx < lastBit; idx++) {
|
|
int colorShift = hiFlags[idx] ? 2 : 0;
|
|
if (!lineBits[idx]) {
|
|
// Bit not set, set pixel to black.
|
|
colorBuf[idx] = (int)HiResColors.Black0;
|
|
} else {
|
|
// Bit set, set pixel to white or color.
|
|
if (idx > 0 && colorBuf[idx - 1] != (int)HiResColors.Black0) {
|
|
// previous bit was also set, this is white
|
|
colorBuf[idx] = (int)HiResColors.White0;
|
|
|
|
// the previous pixel is part of a run of white
|
|
colorBuf[idx - 1] = (int)HiResColors.White0;
|
|
} else {
|
|
// previous bit not set *or* was first pixel in line;
|
|
// set color based on whether this is even or odd pixel col
|
|
bool isOdd = ((idx & 0x01) != 0) ^ isFirstOdd;
|
|
if (isOdd) {
|
|
colorBuf[idx] = (int)HiResColors.Green + colorShift;
|
|
} else {
|
|
colorBuf[idx] = (int)HiResColors.Purple + colorShift;
|
|
}
|
|
}
|
|
|
|
// Do we have a run of the same color? If so, smooth the
|
|
// color out. Note that white blends smoothly with everything.
|
|
if (idx > 1 && (colorBuf[idx - 2] == colorBuf[idx] ||
|
|
colorBuf[idx - 2] == (int)HiResColors.White0)) {
|
|
colorBuf[idx - 1] = colorBuf[idx];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Write to bitmap.
|
|
for (idx = 0; idx < lastBit; idx++) {
|
|
vb.SetPixelIndex(bx++, by, (byte)colorBuf[idx]);
|
|
}
|
|
|
|
// move to next row
|
|
bx = xstart;
|
|
by++;
|
|
offset += rowStride;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
// just leave the bitmap empty
|
|
mAppRef.ReportError("Unknown ColorMode " + colorMode);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Map hi-res colors to palette entries.
|
|
/// </summary>
|
|
private enum HiResColors : byte {
|
|
Black0 = 1,
|
|
Green = 3,
|
|
Purple = 4,
|
|
White0 = 2,
|
|
Black1 = 1,
|
|
Orange = 5,
|
|
Blue = 6,
|
|
White1 = 2
|
|
}
|
|
|
|
private void SetHiResPalette(VisBitmap8 vb) {
|
|
// These don't match directly to hi-res color numbers because we want to
|
|
// avoid adding black/white twice. The colors correspond to Apple IIgs RGB
|
|
// monitor output.
|
|
vb.AddColor(0, 0, 0, 0); // 0=transparent
|
|
vb.AddColor(0xff, 0x00, 0x00, 0x00); // 1=black0/black1
|
|
vb.AddColor(0xff, 0xff, 0xff, 0xff); // 2=white0/white1
|
|
vb.AddColor(0xff, 0x11, 0xdd, 0x00); // 3=green
|
|
vb.AddColor(0xff, 0xdd, 0x22, 0xdd); // 4=purple
|
|
vb.AddColor(0xff, 0xff, 0x66, 0x00); // 5=orange
|
|
vb.AddColor(0xff, 0x22, 0x22, 0xff); // 6=blue
|
|
}
|
|
}
|
|
}
|