mirror of https://github.com/trudnai/Steve2.git
486 lines
17 KiB
Swift
486 lines
17 KiB
Swift
//
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// HiRes.swift
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// Steve ][
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//
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// Created by Tamas Rudnai on 9/19/19.
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// Copyright © 2019, 2020 Tamas Rudnai. All rights reserved.
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//
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// This file is part of Steve ][ -- The Apple ][ Emulator.
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//
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// Steve ][ is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Steve ][ is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Steve ][. If not, see <https://www.gnu.org/licenses/>.
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//
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//import Foundation
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import AppKit
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class HiRes: NSView {
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static let PageSize = 0x2000
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static let Page1Addr = 0x2000
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static let Page2Addr = 0x4000
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static let PixelWidth = 280
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static let PixelMixedHeight = 160
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static let PixelHeight = 192
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static let MixedTextHeight = 4
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static let MixedHeight = 160
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static let blockRows = 24
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static let blockCols = 40
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static let blockWidth = PixelWidth / blockCols
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static let blockHeight = PixelHeight / blockRows
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let HiResBuffer1 = UnsafeRawBufferPointer(start: MEM + Page1Addr, count: PageSize * 2)
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let HiResBuffer2 = UnsafeRawBufferPointer(start: MEM + Page2Addr, count: PageSize * 2)
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var HiResBufferPointer = UnsafeRawBufferPointer(start: MEM + Page1Addr, count: PageSize * 2)
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let HiResRawPointer = UnsafeRawPointer(RAM + Page1Addr)
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// holds the starting addresses for each lines minus the screen page starting address
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var HiResLineAddrTbl = [Int](repeating: 0, count: PixelHeight)
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func initHiResLineAddresses() {
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var i = 0
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for x in stride(from: 0, through: 0x50, by: 0x28) {
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for y in stride(from: 0, through: 0x380, by: 0x80) {
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for z in stride(from: 0, through: 0x1C00, by: 0x400) {
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HiResLineAddrTbl[i] = x + y + z
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i += 1
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}
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}
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}
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}
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var HiResSubView = [[NSView]]()
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func createHiRes() {
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for y in 0 ..< HiRes.blockRows {
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HiResSubView.append([NSView]())
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for x in 0 ..< HiRes.blockCols {
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let blockView = NSView(frame: NSRect(x: x * HiRes.blockWidth, y: y * 8, width: HiRes.blockWidth, height: 8))
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HiResSubView[y].append(blockView)
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self.addSubview(blockView)
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}
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}
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}
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func clearScreen() {
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HiRes.context?.clear( CGRect(x: 0, y: 0, width: frame.width, height: frame.height) )
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needsDisplay = true
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}
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required init?(coder aDecoder: NSCoder) {
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super.init(coder: aDecoder)
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initHiResLineAddresses()
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clearScreen()
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// currentContext?.setShouldAntialias(false)
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// currentContext?.interpolationQuality = CGInterpolationQuality.none
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// let scaleSizeW = Double((frame.size).width) / Double(HiRes.PixelWidth)
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// let scaleSizeH = Double((frame.size).height) / Double(HiRes.PixelHeight)
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// let scaleSizeW = 4
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// let scaleSizeH = 4
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// scaleUnitSquare(to: NSSize(width: scaleSizeW, height: scaleSizeH))
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// create smaller box views for draw optimization
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createHiRes()
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}
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override init(frame: CGRect) {
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super.init(frame: frame)
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}
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static func createBitmapContext(pixelsWide: Int, _ pixelsHigh: Int) -> CGContext? {
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let bytesPerPixel = 4
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let bytesPerRow = bytesPerPixel * pixelsWide
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let byteCount = (bytesPerRow * pixelsHigh)
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// guard let colorSpace = CGColorSpace(name: CGColorSpace.linearSRGB) else { return nil }
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// guard let colorSpace = CGColorSpace(name: CGColorSpace.genericRGBLinear) else { return nil }
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guard let colorSpace = CGColorSpace(name: CGColorSpace.sRGB) else { return nil }
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let pixels = UnsafeMutablePointer<CUnsignedChar>.allocate(capacity: byteCount)
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let bitmapInfo = CGImageAlphaInfo.premultipliedFirst.rawValue | CGBitmapInfo.byteOrder32Little.rawValue
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let context = CGContext(
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data: pixels,
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width: pixelsWide,
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height: pixelsHigh,
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bitsPerComponent: 8,
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bytesPerRow: bytesPerRow,
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space: colorSpace,
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bitmapInfo: bitmapInfo)
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return context
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}
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private var currentContext : CGContext? {
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get {
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if #available(OSX 10.10, *) {
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return NSGraphicsContext.current?.cgContext
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} else if let contextPointer = NSGraphicsContext.current?.graphicsPort {
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let context: CGContext = Unmanaged.fromOpaque(contextPointer).takeUnretainedValue()
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return context
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}
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return nil
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}
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}
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static let ScreenBitmapSize = (PixelWidth * PixelHeight * 4)
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static let context = createBitmapContext(pixelsWide: PixelWidth, PixelHeight)
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static let pixels = UnsafeMutableRawBufferPointer(start: context?.data, count: ScreenBitmapSize)
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static var pixelsSRGB = pixels.bindMemory(to: UInt32.self)
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let R = 2
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let G = 1
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let B = 0
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let A = 3
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var blockChanged = [Bool](repeating: false, count: HiRes.blockRows * HiRes.blockCols)
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var shadowScreen = [Int](repeating: 0, count: PageSize)
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var was = 0;
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// let color_black : UInt32 = 0x00000000;
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// let color_white : UInt32 = 0xEEEEEEEE;
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// let color_purple : UInt32 = 0xFFBB11EE;
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// let color_green : UInt32 = 0xFF0BBB11;
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// let color_blue : UInt32 = 0xFF1155FF;
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// let color_orange : UInt32 = 0xFFEE2211;
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// HiRes Colors for the SRGB color space
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let color_black : UInt32 = 0x00000000;
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let color_white : UInt32 = 0xFFEEEEEE;
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let color_purple : UInt32 = 0xFFDD55FF;
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let color_green : UInt32 = 0xFF2BD84A;
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let color_blue : UInt32 = 0xFF5599FF;
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let color_orange : UInt32 = 0xFFFF6302;
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// for debugging only:
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let color_turquis : UInt32 = 0xFF11BBBB;
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let color_yellow : UInt32 = 0xFFBBBB11;
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// default is green
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var monoColor : UInt32 = 0xFF2BD84A;
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func refreshChanged( blockSize : Int ) {
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// refresh changed block only
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let screenBlockMargin = 12 / blockSize
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let blockScreenWidth = Int(frame.width) / HiRes.blockCols * blockSize
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let blockScreenHeigth = Int(frame.height) / HiRes.blockRows
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for blockVertIdx in 0 ..< HiRes.blockRows {
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for blockHorIdx in 0 ..< HiRes.blockCols / blockSize {
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if blockChanged[ blockVertIdx * HiRes.blockCols / blockSize + blockHorIdx ] {
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// refresh the entire screen
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let boundingBox = CGRect(
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x: blockHorIdx * blockScreenWidth - screenBlockMargin,
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y: Int(frame.height) - blockVertIdx * blockScreenHeigth - blockScreenHeigth - screenBlockMargin,
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width: blockScreenWidth + screenBlockMargin * blockSize,
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height: blockScreenHeigth + screenBlockMargin * blockSize)
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self.setNeedsDisplay( boundingBox )
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}
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}
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}
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}
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func RenderMono() {
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var height = HiRes.PixelHeight
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// do not even render it...
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if videoMode.text == 1 {
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return
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}
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else {
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if videoMode.mixed == 1 {
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height = HiRes.MixedHeight
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}
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if MEMcfg.txt_page_2 == 1 {
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HiResBufferPointer = HiResBuffer2
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}
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else {
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HiResBufferPointer = HiResBuffer1
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}
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}
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var pixelAddr = 0
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var y = 0
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blockChanged = [Bool](repeating: false, count: HiRes.blockRows * HiRes.blockCols)
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for lineAddr in HiResLineAddrTbl {
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if ( height <= 0 ) {
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break
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}
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height -= 1
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let blockVertIdx = y / HiRes.blockHeight * HiRes.blockCols
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for blockHorIdx in 0..<HiRes.blockCols {
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let block = Int(HiResBufferPointer[ Int(lineAddr + blockHorIdx) ])
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let screenIdx = y * HiRes.blockCols + blockHorIdx
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// get all changed blocks
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blockChanged[ blockVertIdx + blockHorIdx ] = blockChanged[ blockVertIdx + blockHorIdx ] || shadowScreen[ screenIdx ] != block
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shadowScreen[ screenIdx ] = block
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for bit in stride(from: 0, through: 6, by: 1) {
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let bitMask = 1 << bit
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if (block & bitMask) != 0 {
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HiRes.pixelsSRGB[pixelAddr] = monoColor;
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}
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else {
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HiRes.pixelsSRGB[pixelAddr] = color_black;
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}
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pixelAddr += 1
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}
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}
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y += 1
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}
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refreshChanged(blockSize: 1)
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}
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func colorPixel ( pixelAddr : Int, pixel : Int, prev : Int ) {
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let colorAddr = pixelAddr / 4
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switch ( pixel ) {
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case 1: // purple (bits are in reverse!)
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HiRes.pixelsSRGB[colorAddr] = color_purple;
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// HiRes.pixelsSRGB[colorAddr + 1] = color_purple
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if (colorAddr >= 1) && (prev != 0x03) && (prev != 0x07) && (prev != 0x00) && (prev != 0x04) {
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HiRes.pixelsSRGB[colorAddr - 1] = color_purple
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}
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case 2: // green
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// reducing color bleeding
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if (colorAddr > 0) && (HiRes.pixelsSRGB[colorAddr - 1] != color_black) {
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HiRes.pixelsSRGB[colorAddr] = color_green
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}
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HiRes.pixelsSRGB[colorAddr + 1] = color_green
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case 3: // white 1
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// if ( colorAddr >= 2 ) && ( HiRes.pixelsSRGB[colorAddr - 2] != color_black ) {
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// HiRes.pixelsSRGB[colorAddr - 1] = HiRes.pixelsSRGB[colorAddr - 2]
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// }
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// if (colorAddr >= 1) {
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// HiRes.pixelsSRGB[colorAddr - 1] = color_yellow
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// }
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HiRes.pixelsSRGB[colorAddr] = color_white
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HiRes.pixelsSRGB[colorAddr + 1] = color_white
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case 5: // blue
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HiRes.pixelsSRGB[colorAddr] = color_blue
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if (colorAddr >= 1) && (prev != 0x00) && (prev != 0x04) {
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HiRes.pixelsSRGB[colorAddr - 1] = color_blue
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}
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case 6: // orange
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// reducing color bleeding
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if (colorAddr > 0) && (HiRes.pixelsSRGB[colorAddr - 1] != color_black) {
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HiRes.pixelsSRGB[colorAddr] = color_orange
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}
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HiRes.pixelsSRGB[colorAddr + 1] = color_orange
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case 7: // white 2
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HiRes.pixelsSRGB[colorAddr] = color_white
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HiRes.pixelsSRGB[colorAddr + 1] = color_white
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default: // 0x00 (black 1), 0x04 (black 2)
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HiRes.pixelsSRGB[colorAddr] = color_black
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HiRes.pixelsSRGB[colorAddr + 1] = color_black
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break
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}
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// white adjustment
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if ( (prev & 2) == 2 ) && ( (pixel & 1) == 1 ) {
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HiRes.pixelsSRGB[colorAddr] = color_white
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if (colorAddr >= 1) {
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HiRes.pixelsSRGB[colorAddr - 1] = color_white
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}
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// TODO: Need better check if extra green was created
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if (colorAddr >= 2) && (HiRes.pixelsSRGB[colorAddr - 2] == color_green ) {
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if (colorAddr < 3) || (HiRes.pixelsSRGB[colorAddr - 3] != color_green) {
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HiRes.pixelsSRGB[colorAddr - 2] = color_black
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}
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}
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}
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// // green adjustment -- followed by white
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// if (colorAddr >= 1) && (prev == 0x03) && (HiRes.pixelsSRGB[colorAddr - 1] = color_green) {
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// HiRes.pixelsSRGB[colorAddr - 1] = color_green
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// }
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// purple adjustment -- followed by white
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if (prev == 0x01) && (
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(pixel == 0x01) ||
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(pixel == 0x03) || (pixel == 0x07) // white
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) {
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// was the previous purple pixel promoted to white or is it still purple?
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if (colorAddr >= 2) && ( HiRes.pixelsSRGB[colorAddr - 2] == color_purple ) {
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HiRes.pixelsSRGB[colorAddr - 1] = color_purple
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}
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}
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// blue adjustment -- followed by white
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else if (prev == 0x05) && (
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(pixel == 0x05) ||
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(pixel == 0x03) || (pixel == 0x07) // white
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) {
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HiRes.pixelsSRGB[colorAddr - 1] = color_blue
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}
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}
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func RenderColor() {
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var height = HiRes.PixelHeight
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// do not even render it...
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if videoMode.text == 1 {
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return
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}
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else {
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if videoMode.mixed == 1 {
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height = HiRes.MixedHeight
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}
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if MEMcfg.txt_page_2 == 1 {
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HiResBufferPointer = HiResBuffer2
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}
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else {
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HiResBufferPointer = HiResBuffer1
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}
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}
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var pixelAddr = 0
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var y = 0
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blockChanged = [Bool](repeating: false, count: HiRes.blockRows * HiRes.blockCols / 2)
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HiRes.context?.clear( CGRect(x: 0, y: 0, width: frame.width, height: frame.height) )
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for lineAddr in HiResLineAddrTbl {
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if ( height <= 0 ) {
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break
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}
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height -= 1
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let blockVertIdx = y / HiRes.blockHeight * HiRes.blockCols / 2
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var prev = 0
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for blockHorIdx in 0 ..< HiRes.blockCols / 2 {
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// print("blockVertIdx:", blockVertIdx, " blockHorIdx:", blockHorIdx)
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let blockH = Int(HiResBufferPointer[ Int(lineAddr + blockHorIdx * 2) ])
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let blockH7 = ( blockH >> 5 ) & 0x04
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let blockL = Int(HiResBufferPointer[ Int(lineAddr + blockHorIdx * 2) + 1 ])
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let blockL7 = ( blockL >> 5 ) & 0x04
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let block = ( ( blockL & 0x7F ) << 7 ) | ( blockH & 0x7F )
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let block14 = ( blockL << 8 ) | blockH
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let screenIdx = y * HiRes.blockCols + blockHorIdx
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// get all changed blocks
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blockChanged[ blockVertIdx + blockHorIdx ] = blockChanged[ blockVertIdx + blockHorIdx ] || shadowScreen[ screenIdx ] != block14
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shadowScreen[ screenIdx ] = block14
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for px in 0 ... 2 {
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// let bitMask = 3 << ( px * 2 )
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let pixel = blockH7 | ( (block >> (px * 2)) & 3 )
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colorPixel(pixelAddr: pixelAddr, pixel: pixel, prev: prev )
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pixelAddr += 8
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prev = pixel
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}
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let pixel = (blockL7 | blockH7) | ( (block >> (3 * 2)) & 3 )
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colorPixel(pixelAddr: pixelAddr, pixel: pixel, prev: prev )
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pixelAddr += 8
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prev = pixel
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for px in 4 ... 6 {
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// let bitMask = 3 << ( px * 2 )
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let pixel = blockL7 | ( (block >> (px * 2)) & 3 )
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colorPixel(pixelAddr: pixelAddr, pixel: pixel, prev: prev )
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pixelAddr += 8
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prev = pixel
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}
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}
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y += 1
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}
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// refresh changed block only
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refreshChanged(blockSize: 2)
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// needsDisplay = true // refresh the entire screen
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}
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func Render() {
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if ( ViewController.current?.ColorMonitor ?? true ) {
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RenderColor()
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}
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else {
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RenderMono()
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}
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}
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func RenderFullScreen() {
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needsDisplay = true
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Render()
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}
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override func draw(_ rect: CGRect) {
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guard let image = HiRes.context?.makeImage() else { return }
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// refresh the entire screen
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let boundingBox = CGRect(x: 0, y: 0, width: frame.width, height: frame.height)
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if ( ViewController.current?.CRTMonitor ?? false ) {
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currentContext?.interpolationQuality = .high // TODO: Make a switch that lets you turn on and off "old monitor effects"
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}
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else {
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currentContext?.interpolationQuality = .none
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}
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currentContext?.draw(image, in: boundingBox)
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}
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}
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