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VideoModes refactor part 1 (#60)

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* Unify behaviors

* remove vestigial overdrawing

* handle bank 1 lores writes better

* carry over last bit when shifted

* Cleanup.
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Will Scullin 2021-04-18 19:54:15 -07:00 committed by GitHub
parent f53e50117e
commit 5c7e335aad
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3 changed files with 233 additions and 309 deletions
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js/canvas.ts
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@ -1,4 +1,4 @@
/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com> /* Copyright 2010-2021 Will Scullin <scullin@scullinsteel.com>
* *
* Permission to use, copy, modify, distribute, and sell this software and its * Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that * documentation for any purpose is hereby granted without fee, provided that
@ -38,21 +38,38 @@ let highColorHGRMode = false;
let highColorTextMode = false; let highColorTextMode = false;
let oneSixtyMode = false; let oneSixtyMode = false;
function dim(c: Color): Color { const tmpCanvas = document.createElement('canvas');
const tmpContext = tmpCanvas.getContext('2d');
const buildScreen = (mainData: ImageData, mixData?: ImageData | null) => {
if (!tmpContext) {
throw new Error('No 2d context');
}
const { width, height } = { width: 560, height: 192 };
const { x, y } = _80colMode ? { x: 0, y: 0 } : { x: 0, y: 0 };
tmpCanvas.width = width;
tmpCanvas.height = height;
tmpContext.fillStyle = 'rgba(0,0,0,1)';
tmpContext.fillRect(0, 0, width, height);
if (mixData) {
tmpContext.putImageData(mainData, x, y, 0, 0, 560, 160);
tmpContext.putImageData(mixData, x, y, 0, 160, 560, 32);
} else {
tmpContext.putImageData(mainData, x, y);
}
return tmpCanvas;
};
const dim = (c: Color): Color => {
return [ return [
c[0] * 0.75 & 0xff, c[0] * 0.75 & 0xff,
c[1] * 0.75 & 0xff, c[1] * 0.75 & 0xff,
c[2] * 0.75 & 0xff c[2] * 0.75 & 0xff
]; ];
} };
function rowToBase(row: number) {
const ab = (row >> 3) & 3;
const cd = (row >> 1) & 0x3;
const e = row & 1;
return (cd << 8) | (e << 7) | (ab << 5) | (ab << 3);
}
// hires colors // hires colors
const orangeCol: Color = [255, 106, 60]; const orangeCol: Color = [255, 106, 60];
@ -125,7 +142,7 @@ const dcolors: Color[] = [
]; ];
const notDirty: Region = { const notDirty: Region = {
top: 385, top: 193,
bottom: -1, bottom: -1,
left: 561, left: 561,
right: -1 right: -1
@ -153,34 +170,38 @@ export class LoresPage2D implements LoresPage {
constructor(private page: number, constructor(private page: number,
private readonly charset: rom, private readonly charset: rom,
private readonly e: boolean) { private readonly e: boolean) {
this.imageData = new ImageData(560, 384); this.imageData = new ImageData(560, 192);
for (let idx = 0; idx < 560 * 384 * 4; idx++) { for (let idx = 0; idx < 560 * 192 * 4; idx++) {
this.imageData.data[idx] = 0xff; this.imageData.data[idx] = 0xff;
} }
this._buffer[0] = allocMemPages(0x4); this._buffer[0] = allocMemPages(0x4);
this._buffer[1] = allocMemPages(0x4); this._buffer[1] = allocMemPages(0x4);
} }
_drawPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = data[off + 4] = c0; data[off + 0] = data[off + 4] = c0;
data[off + 1] = data[off + 5] = c1; data[off + 1] = data[off + 5] = c1;
data[off + 2] = data[off + 6] = c2; data[off + 2] = data[off + 6] = c2;
const nextOff = off + 560 * 4;
data[nextOff] = data[nextOff + 4] = c0;
data[nextOff + 1] = data[nextOff + 5] = c1;
data[nextOff + 2] = data[nextOff + 6] = c2;
} }
_drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = c0; data[off + 0] = c0;
data[off + 1] = c1; data[off + 1] = c1;
data[off + 2] = c2; data[off + 2] = c2;
const nextOff = off + 560 * 4; }
data[nextOff] = c0;
data[nextOff + 1] = c1; private _checkInverse(val: byte) {
data[nextOff + 2] = c2; let inverse = false;
if (this.e) {
if (!_80colMode && !altCharMode) {
inverse = ((val & 0xc0) == 0x40) && this._blink;
}
} else {
inverse = !((val & 0x80) || (val & 0x40) && this._blink);
}
return inverse;
} }
bank0(): MemoryPages { bank0(): MemoryPages {
@ -203,17 +224,18 @@ export class LoresPage2D implements LoresPage {
// These are used by both bank 0 and 1 // These are used by both bank 0 and 1
_start() { private _start() {
return (0x04 * this.page); return (0x04 * this.page);
} }
_end() { return (0x04 * this.page) + 0x03; }
_read(page: byte, off: byte, bank: bank) { private _end() { return (0x04 * this.page) + 0x03; }
private _read(page: byte, off: byte, bank: bank) {
const addr = (page << 8) | off, base = addr & 0x3FF; const addr = (page << 8) | off, base = addr & 0x3FF;
return this._buffer[bank][base]; return this._buffer[bank][base];
} }
_write(page: byte, off: byte, val: byte, bank: bank) { private _write(page: byte, off: byte, val: byte, bank: bank) {
const addr = (page << 8) | off; const addr = (page << 8) | off;
const base = addr & 0x3FF; const base = addr & 0x3FF;
let fore, back; let fore, back;
@ -234,58 +256,55 @@ export class LoresPage2D implements LoresPage {
const data = this.imageData.data; const data = this.imageData.data;
if ((row < 24) && (col < 40)) { if ((row < 24) && (col < 40)) {
let y = row << 4; let y = row << 3;
if (y < this.dirty.top) { this.dirty.top = y; } if (y < this.dirty.top) { this.dirty.top = y; }
y += 16; y += 8;
if (y > this.dirty.bottom) { this.dirty.bottom = y; } if (y > this.dirty.bottom) { this.dirty.bottom = y; }
let x = col * 14; let x = col * 14;
if (x < this.dirty.left) { this.dirty.left = x; } if (x < this.dirty.left) { this.dirty.left = x; }
x += 14; x += 14;
if (x > this.dirty.right) { this.dirty.right = x; } if (x > this.dirty.right) { this.dirty.right = x; }
let color;
if (textMode || hiresMode || (mixedMode && row > 19)) { if (textMode || hiresMode || (mixedMode && row > 19)) {
let inverse;
if (this.e) {
if (!_80colMode && !altCharMode) {
inverse = ((val & 0xc0) == 0x40) && this._blink;
}
} else {
inverse = !((val & 0x80) || (val & 0x40) && this._blink);
}
fore = inverse ? blackCol : whiteCol;
back = inverse ? whiteCol : blackCol;
if (_80colMode) { if (_80colMode) {
const inverse = this._checkInverse(val);
fore = inverse ? blackCol : whiteCol;
back = inverse ? whiteCol : blackCol;
if (!enhanced) { if (!enhanced) {
val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val; val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val;
} else if (!altCharMode) { } else if (!altCharMode) {
val = (val >= 0x40 && val < 0x80) ? val - 0x40 : val; val = (val >= 0x40 && val < 0x80) ? val - 0x40 : val;
} }
off = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8 * 2) * 4; let offset = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8) * 4;
for (let jdx = 0; jdx < 8; jdx++) { for (let jdx = 0; jdx < 8; jdx++) {
let b = this.charset[val * 8 + jdx]; let b = this.charset[val * 8 + jdx];
for (let idx = 0; idx < 7; idx++) { for (let idx = 0; idx < 7; idx++) {
color = (b & 0x01) ? back : fore; const color = (b & 0x01) ? back : fore;
this._drawHalfPixel(data, off, color); this._drawHalfPixel(data, offset, color);
b >>= 1; b >>= 1;
off += 4; offset += 4;
} }
off += 553 * 4 + 560 * 4; offset += 553 * 4;
} }
} else { } else {
val = this._buffer[0][base]; val = this._buffer[0][base];
const inverse = this._checkInverse(val);
fore = inverse ? blackCol : whiteCol;
back = inverse ? whiteCol : blackCol;
if (!enhanced) { if (!enhanced) {
val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val; val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val;
} else if (!altCharMode) { } else if (!altCharMode) {
val = (val >= 0x40 && val < 0x80) ? val - 0x40 : val; val = (val >= 0x40 && val < 0x80) ? val - 0x40 : val;
} }
off = (col * 14 + row * 560 * 8 * 2) * 4; let offset = (col * 14 + row * 560 * 8) * 4;
if (highColorTextMode) { if (highColorTextMode) {
fore = _colors[this._buffer[1][base] >> 4]; fore = _colors[this._buffer[1][base] >> 4];
@ -296,12 +315,12 @@ export class LoresPage2D implements LoresPage {
for (let jdx = 0; jdx < 8; jdx++) { for (let jdx = 0; jdx < 8; jdx++) {
let b = this.charset[val * 8 + jdx]; let b = this.charset[val * 8 + jdx];
for (let idx = 0; idx < 7; idx++) { for (let idx = 0; idx < 7; idx++) {
color = (b & 0x01) ? back : fore; const color = (b & 0x01) ? back : fore;
this._drawPixel(data, off, color); this._drawPixel(data, offset, color);
b >>= 1; b >>= 1;
off += 8; offset += 8;
} }
off += 546 * 4 + 560 * 4; offset += 546 * 4;
} }
} else { } else {
const colorMode = mixedMode && !textMode && !this._monoMode; const colorMode = mixedMode && !textMode && !this._monoMode;
@ -318,6 +337,7 @@ export class LoresPage2D implements LoresPage {
} }
for (let idx = 0; idx < 7; idx++) { for (let idx = 0; idx < 7; idx++) {
let color;
if (colorMode) { if (colorMode) {
if (b & 0x80) { if (b & 0x80) {
if ((b & 0x1c0) != 0x80) { if ((b & 0x1c0) != 0x80) {
@ -332,11 +352,11 @@ export class LoresPage2D implements LoresPage {
} else { } else {
color = (b & 0x80) ? fore : back; color = (b & 0x80) ? fore : back;
} }
this._drawPixel(data, off, color); this._drawPixel(data, offset, color);
b <<= 1; b <<= 1;
off += 8; offset += 8;
} }
off += 546 * 4 + 560 * 4; offset += 546 * 4;
} }
} }
} }
@ -345,7 +365,7 @@ export class LoresPage2D implements LoresPage {
return; return;
} }
if (_80colMode && !an3) { if (_80colMode && !an3) {
off = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8 * 2) * 4; let offset = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8) * 4;
if (this._monoMode) { if (this._monoMode) {
fore = whiteCol; fore = whiteCol;
back = blackCol; back = blackCol;
@ -356,29 +376,29 @@ export class LoresPage2D implements LoresPage {
b <<= 1; b <<= 1;
} }
for (let idx = 0; idx < 7; idx++) { for (let idx = 0; idx < 7; idx++) {
color = (b & 0x80) ? fore : back; const color = (b & 0x80) ? fore : back;
this._drawHalfPixel(data, off, color); this._drawHalfPixel(data, offset, color);
b <<= 1; b <<= 1;
off += 4; offset += 4;
} }
off += 553 * 4 + 560 * 4; offset += 553 * 4;
} }
} else { } else {
if (bank & 0x1) { if (bank & 0x1) {
val = ((val & 0x77) << 1) | ((val & 0x88) >> 3); val = ((val & 0x77) << 1) | ((val & 0x88) >> 3);
} }
for (let jdx = 0; jdx < 8; jdx++) { for (let jdx = 0; jdx < 8; jdx++) {
color = _colors[(jdx < 4) ? const color = _colors[(jdx < 4) ?
(val & 0x0f) : (val >> 4)]; (val & 0x0f) : (val >> 4)];
for (let idx = 0; idx < 7; idx++) { for (let idx = 0; idx < 7; idx++) {
this._drawHalfPixel(data, off, color); this._drawHalfPixel(data, offset, color);
off += 4; off += 4;
} }
off += 553 * 4 + 560 * 4; offset += 553 * 4;
} }
} }
} else { } else {
off = (col * 14 + row * 560 * 8 * 2) * 4; let offset = (col * 14 + row * 560 * 8) * 4;
if (this._monoMode) { if (this._monoMode) {
fore = whiteCol; fore = whiteCol;
@ -391,21 +411,21 @@ export class LoresPage2D implements LoresPage {
b <<= 2; b <<= 2;
} }
for (let idx = 0; idx < 14; idx++) { for (let idx = 0; idx < 14; idx++) {
color = (b & 0x8000) ? fore : back; const color = (b & 0x8000) ? fore : back;
this._drawHalfPixel(data, off, color); this._drawHalfPixel(data, offset, color);
b <<= 1; b <<= 1;
off += 4; offset += 4;
} }
off += 546 * 4 + 560 * 4; offset += 546 * 4;
} }
} else { } else {
for (let jdx = 0; jdx < 8; jdx++) { for (let jdx = 0; jdx < 8; jdx++) {
color = _colors[(jdx < 4) ? (val & 0x0f) : (val >> 4)]; const color = _colors[(jdx < 4) ? (val & 0x0f) : (val >> 4)];
for (let idx = 0; idx < 7; idx++) { for (let idx = 0; idx < 7; idx++) {
this._drawPixel(data, off, color); this._drawPixel(data, offset, color);
off += 8; offset += 8;
} }
off += 546 * 4 + 560 * 4; offset += 546 * 4;
} }
} }
} }
@ -425,6 +445,10 @@ export class LoresPage2D implements LoresPage {
this._refreshing = false; this._refreshing = false;
} }
mono(on: boolean) {
this._monoMode = on;
}
blink() { blink() {
let addr = 0x400 * this.page; let addr = 0x400 * this.page;
this._refreshing = true; this._refreshing = true;
@ -438,11 +462,6 @@ export class LoresPage2D implements LoresPage {
this._refreshing = false; this._refreshing = false;
} }
mono(on: boolean) {
this._monoMode = on;
this.refresh();
}
start() { start() {
setInterval(() => this.blink(), 267); setInterval(() => this.blink(), 267);
return this._start(); return this._start();
@ -470,6 +489,7 @@ export class LoresPage2D implements LoresPage {
] ]
}; };
} }
setState(state: GraphicsState) { setState(state: GraphicsState) {
this.page = state.page; this.page = state.page;
this._monoMode = state.mono; this._monoMode = state.mono;
@ -479,6 +499,13 @@ export class LoresPage2D implements LoresPage {
this.refresh(); this.refresh();
} }
private rowToBase(row: number) {
const ab = (row >> 3) & 3;
const cd = (row >> 1) & 0x3;
const e = row & 1;
return (cd << 8) | (e << 7) | (ab << 5) | (ab << 3);
}
private mapCharCode(charCode: byte) { private mapCharCode(charCode: byte) {
charCode &= 0x7F; charCode &= 0x7F;
if (charCode < 0x20) { if (charCode < 0x20) {
@ -494,7 +521,7 @@ export class LoresPage2D implements LoresPage {
let buffer = '', line, charCode; let buffer = '', line, charCode;
let row, col, base; let row, col, base;
for (row = 0; row < 24; row++) { for (row = 0; row < 24; row++) {
base = rowToBase(row); base = this.rowToBase(row);
line = ''; line = '';
if (this.e && _80colMode) { if (this.e && _80colMode) {
for (col = 0; col < 80; col++) { for (col = 0; col < 80; col++) {
@ -522,72 +549,56 @@ export class LoresPage2D implements LoresPage {
export class HiresPage2D implements HiresPage { export class HiresPage2D implements HiresPage {
public imageData: ImageData; public imageData: ImageData;
dirty: Region = {...notDirty} dirty: Region = {...notDirty};
private _buffer: memory[] = []; private _buffer: memory[] = [];
private _refreshing = false; private _refreshing = false;
private _monoMode = false; private _monoMode = false;
constructor( constructor(
private page: number) { private page: number) {
this.imageData = new ImageData(560, 384); this.imageData = new ImageData(560, 192);
for (let idx = 0; idx < 560 * 384 * 4; idx++) { for (let idx = 0; idx < 560 * 192 * 4; idx++) {
this.imageData.data[idx] = 0xff; this.imageData.data[idx] = 0xff;
} }
this._buffer[0] = allocMemPages(0x20); this._buffer[0] = allocMemPages(0x20);
this._buffer[1] = allocMemPages(0x20); this._buffer[1] = allocMemPages(0x20);
} }
_drawPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = data[off + 4] = c0; data[off + 0] = data[off + 4] = c0;
data[off + 1] = data[off + 5] = c1; data[off + 1] = data[off + 5] = c1;
data[off + 2] = data[off + 6] = c2; data[off + 2] = data[off + 6] = c2;
const nextOff = off + 560 * 4;
data[nextOff] = data[nextOff + 4] = c0;
data[nextOff + 1] = data[nextOff + 5] = c1;
data[nextOff + 2] = data[nextOff + 6] = c2;
} }
_drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = c0; data[off + 0] = c0;
data[off + 1] = c1; data[off + 1] = c1;
data[off + 2] = c2; data[off + 2] = c2;
const nextOff = off + 560 * 4;
data[nextOff] = c0;
data[nextOff + 1] = c1;
data[nextOff + 2] = c2;
} }
// //
// 160x192 pixels alternate 3 and 4 base pixels wide // 160x192 pixels alternate 3 and 4 base pixels wide
// //
_draw3Pixel(data: Uint8ClampedArray, off: number, color: Color) { private _draw3Pixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = data[off + 4] = data[off + 8] = c0; data[off + 0] = data[off + 4] = data[off + 8] = c0;
data[off + 1] = data[off + 5] = data[off + 9] = c1; data[off + 1] = data[off + 5] = data[off + 9] = c1;
data[off + 2] = data[off + 6] = data[off + 10] = c2; data[off + 2] = data[off + 6] = data[off + 10] = c2;
const nextOff = off + 560 * 4;
data[nextOff] = data[nextOff + 4] = data[nextOff + 8] = c0;
data[nextOff + 1] = data[nextOff + 5] = data[nextOff + 9] = c1;
data[nextOff + 2] = data[nextOff + 6] = data[nextOff + 10] = c2;
} }
_draw4Pixel(data: Uint8ClampedArray, off: number, color: Color) { private _draw4Pixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = data[off + 4] = data[off + 8] = data[off + 12] = c0; data[off + 0] = data[off + 4] = data[off + 8] = data[off + 12] = c0;
data[off + 1] = data[off + 5] = data[off + 9] = data[off + 13] = c1; data[off + 1] = data[off + 5] = data[off + 9] = data[off + 13] = c1;
data[off + 2] = data[off + 6] = data[off + 10] = data[off + 14] = c2; data[off + 2] = data[off + 6] = data[off + 10] = data[off + 14] = c2;
const nextOff = off + 560 * 4;
data[nextOff] = data[nextOff + 4] = data[nextOff + 8] = data[nextOff + 12] = c0;
data[nextOff + 1] = data[nextOff + 5] = data[nextOff + 9] = data[nextOff + 13] = c1;
data[nextOff + 2] = data[nextOff + 6] = data[nextOff + 10] = data[nextOff + 14] = c2;
} }
bank0(): MemoryPages { bank0(): MemoryPages {
@ -608,16 +619,16 @@ export class HiresPage2D implements HiresPage {
}; };
} }
_start() { return (0x20 * this.page); } private _start() { return (0x20 * this.page); }
_end() { return (0x020 * this.page) + 0x1f; } private _end() { return (0x020 * this.page) + 0x1f; }
_read(page: byte, off: byte, bank: bank) { private _read(page: byte, off: byte, bank: bank) {
const addr = (page << 8) | off, base = addr & 0x1FFF; const addr = (page << 8) | off, base = addr & 0x1FFF;
return this._buffer[bank][base]; return this._buffer[bank][base];
} }
_write(page: byte, off: byte, val: byte, bank: bank) { private _write(page: byte, off: byte, val: byte, bank: bank) {
const addr = (page << 8) | off; const addr = (page << 8) | off;
const base = addr & 0x1FFF; const base = addr & 0x1FFF;
@ -626,8 +637,6 @@ export class HiresPage2D implements HiresPage {
} }
this._buffer[bank][base] = val; this._buffer[bank][base] = val;
let hbs = val & 0x80;
const col = (base % 0x80) % 0x28; const col = (base % 0x80) % 0x28;
const adj = off - col; const adj = off - col;
@ -641,14 +650,10 @@ export class HiresPage2D implements HiresPage {
const data = this.imageData.data; const data = this.imageData.data;
let dx, dy; let dx, dy;
if ((rowa < 24) && (col < 40)) { if ((rowa < 24) && (col < 40) && hiresMode) {
if (!hiresMode) {
return;
}
let y = rowa << 4 | rowb << 1; let y = rowa << 4 | rowb << 1;
if (y < this.dirty.top) { this.dirty.top = y; } if (y < this.dirty.top) { this.dirty.top = y; }
y += 2; y += 1;
if (y > this.dirty.bottom) { this.dirty.bottom = y; } if (y > this.dirty.bottom) { this.dirty.bottom = y; }
let x = col * 14 - 2; let x = col * 14 - 2;
if (x < this.dirty.left) { this.dirty.left = x; } if (x < this.dirty.left) { this.dirty.left = x; }
@ -663,10 +668,10 @@ export class HiresPage2D implements HiresPage {
const c4 = val >> 4; const c4 = val >> 4;
dx = col * 2 + (bank ^ 1); dx = col * 2 + (bank ^ 1);
off = dx * 28 + dy * 280 * 4 * 2; const offset = dx * 28 + dy * 280 * 4;
this._draw3Pixel(data, off, dcolors[c3]); this._draw3Pixel(data, offset, dcolors[c3]);
this._draw4Pixel(data, off + 12, dcolors[c4]); this._draw4Pixel(data, offset + 12, dcolors[c4]);
} else if (doubleHiresMode) { } else if (doubleHiresMode) {
val &= 0x7f; val &= 0x7f;
@ -716,7 +721,7 @@ export class HiresPage2D implements HiresPage {
hb[8] = b4 & 0x80; hb[8] = b4 & 0x80;
} }
dx = mcol * 14; dx = mcol * 14;
off = dx * 4 + dy * 280 * 4 * 2; let offset = dx * 4 + dy * 280 * 4;
let monoColor = null; let monoColor = null;
if (this._monoMode || monoDHRMode) { if (this._monoMode || monoDHRMode) {
@ -724,45 +729,45 @@ export class HiresPage2D implements HiresPage {
} }
for (let idx = 1; idx < 8; idx++) { for (let idx = 1; idx < 8; idx++) {
hbs = hb[idx]; const hbs = hb[idx];
const dcolor = dcolors[r4[c[idx]]]; const dcolor = dcolors[r4[c[idx]]];
let bits = c[idx - 1] | (c[idx] << 4) | (c[idx + 1] << 8); let bits = c[idx - 1] | (c[idx] << 4) | (c[idx + 1] << 8);
for (let jdx = 0; jdx < 4; jdx++, off += 4) { for (let jdx = 0; jdx < 4; jdx++, offset += 4) {
if (monoColor) { if (monoColor) {
if (bits & 0x10) { if (bits & 0x10) {
this._drawHalfPixel(data, off, monoColor); this._drawHalfPixel(data, offset, monoColor);
} else { } else {
this._drawHalfPixel(data, off, blackCol); this._drawHalfPixel(data, offset, blackCol);
} }
} else if (mixedDHRMode) { } else if (mixedDHRMode) {
if (hbs) { if (hbs) {
this._drawHalfPixel(data, off, dcolor); this._drawHalfPixel(data, offset, dcolor);
} else { } else {
if (bits & 0x10) { if (bits & 0x10) {
this._drawHalfPixel(data, off, whiteCol); this._drawHalfPixel(data, offset, whiteCol);
} else { } else {
this._drawHalfPixel(data, off, blackCol); this._drawHalfPixel(data, offset, blackCol);
} }
} }
} else if (colorDHRMode) { } else if (colorDHRMode) {
this._drawHalfPixel(data, off, dcolor); this._drawHalfPixel(data, offset, dcolor);
} else if ( } else if (
((c[idx] != c[idx - 1]) && (c[idx] != c[idx + 1])) && ((c[idx] != c[idx - 1]) && (c[idx] != c[idx + 1])) &&
(((bits & 0x1c) == 0x1c) || (((bits & 0x1c) == 0x1c) ||
((bits & 0x70) == 0x70) || ((bits & 0x70) == 0x70) ||
((bits & 0x38) == 0x38)) ((bits & 0x38) == 0x38))
) { ) {
this._drawHalfPixel(data, off, whiteCol); this._drawHalfPixel(data, offset, whiteCol);
} else if ( } else if (
(bits & 0x38) || (bits & 0x38) ||
(c[idx] == c[idx + 1]) || (c[idx] == c[idx + 1]) ||
(c[idx] == c[idx - 1]) (c[idx] == c[idx - 1])
) { ) {
this._drawHalfPixel(data, off, dcolor); this._drawHalfPixel(data, offset, dcolor);
} else if (bits & 0x28) { } else if (bits & 0x28) {
this._drawHalfPixel(data, off, dim(dcolor)); this._drawHalfPixel(data, offset, dim(dcolor));
} else { } else {
this._drawHalfPixel(data, off, blackCol); this._drawHalfPixel(data, offset, blackCol);
} }
bits >>= 1; bits >>= 1;
} }
@ -779,7 +784,7 @@ export class HiresPage2D implements HiresPage {
} }
} else { } else {
val = this._buffer[0][base]; val = this._buffer[0][base];
hbs = val & 0x80; const hbs = val & 0x80;
val &= 0x7f; val &= 0x7f;
dx = col * 14 - 2; dx = col * 14 - 2;
b0 = col > 0 ? this._buffer[0][base - 1] : 0; b0 = col > 0 ? this._buffer[0][base - 1] : 0;
@ -791,11 +796,11 @@ export class HiresPage2D implements HiresPage {
const oddCol = (hbs ? orangeCol : greenCol); const oddCol = (hbs ? orangeCol : greenCol);
const evenCol = (hbs ? blueCol : violetCol); const evenCol = (hbs ? blueCol : violetCol);
off = dx * 4 + dy * 280 * 4 * 2; let offset = dx * 4 + dy * 280 * 4;
const monoColor = this._monoMode ? whiteCol : null; const monoColor = this._monoMode ? whiteCol : null;
for (let idx = 0; idx < 9; idx++, off += 8) { for (let idx = 0; idx < 9; idx++, offset += 8) {
val >>= 1; val >>= 1;
if (v1) { if (v1) {
@ -823,7 +828,7 @@ export class HiresPage2D implements HiresPage {
} }
if (dx > -1 && dx < 560) { if (dx > -1 && dx < 560) {
this._drawPixel(data, off, color); this._drawPixel(data, offset, color);
} }
dx += 2; dx += 2;
@ -852,7 +857,6 @@ export class HiresPage2D implements HiresPage {
mono(on: boolean) { mono(on: boolean) {
this._monoMode = on; this._monoMode = on;
this.refresh();
} }
start() { start() {
@ -1069,21 +1073,18 @@ export class VideoModes2D implements VideoModes {
if (!this._context) { if (!this._context) {
throw new Error('No 2D context'); throw new Error('No 2D context');
} }
let blitted = false;
if (mainDirty.bottom !== -1 || (mixDirty && mixDirty.bottom !== -1)) { if (mainDirty.bottom !== -1 || (mixDirty && mixDirty.bottom !== -1)) {
if (mixData) { const imageData = buildScreen(mainData, mixData);
this._context.putImageData( this._context.drawImage(
mainData, this._left, this._top, 0, 0, 560, 320 imageData,
); 0, 0, 560, 192,
this._context.putImageData( this._left, this._top, 560, 384
mixData, this._left, this._top, 0, 320, 560, 64 );
); blitted = true;
} else {
this._context.putImageData(mainData, this._top, this._left);
}
return true;
} else {
return false;
} }
return blitted;
} }
blit(altData?: ImageData) { blit(altData?: ImageData) {
@ -1094,7 +1095,7 @@ export class VideoModes2D implements VideoModes {
if (altData) { if (altData) {
blitted = this.updateImage( blitted = this.updateImage(
altData, altData,
{top: 0, left: 0, right: 560, bottom: 384} { top: 0, left: 0, right: 560, bottom: 192 }
); );
} else if (hiresMode && !textMode) { } else if (hiresMode && !textMode) {
blitted = this.updateImage( blitted = this.updateImage(
@ -1110,10 +1111,11 @@ export class VideoModes2D implements VideoModes {
} }
hgr.dirty = {...notDirty}; hgr.dirty = {...notDirty};
gr.dirty = {...notDirty}; gr.dirty = {...notDirty};
return blitted; return blitted;
} }
getState() { getState(): VideoModesState {
return { return {
grs: [this._grs[0].getState(), this._grs[1].getState()], grs: [this._grs[0].getState(), this._grs[1].getState()],
hgrs: [this._hgrs[0].getState(), this._hgrs[1].getState()], hgrs: [this._hgrs[0].getState(), this._hgrs[1].getState()],
@ -1124,7 +1126,7 @@ export class VideoModes2D implements VideoModes {
_80colMode: _80colMode, _80colMode: _80colMode,
altCharMode: altCharMode, altCharMode: altCharMode,
an3: an3 an3: an3
} as VideoModesState; };
} }
setState(state: VideoModesState) { setState(state: VideoModesState) {
@ -1140,6 +1142,7 @@ export class VideoModes2D implements VideoModes {
this._grs[1].setState(state.grs[1]); this._grs[1].setState(state.grs[1]);
this._hgrs[0].setState(state.hgrs[0]); this._hgrs[0].setState(state.hgrs[0]);
this._hgrs[1].setState(state.hgrs[1]); this._hgrs[1].setState(state.hgrs[1]);
this._refresh();
} }
mono(on: boolean) { mono(on: boolean) {
@ -1147,6 +1150,7 @@ export class VideoModes2D implements VideoModes {
this._grs[1].mono(on); this._grs[1].mono(on);
this._hgrs[0].mono(on); this._hgrs[0].mono(on);
this._hgrs[1].mono(on); this._hgrs[1].mono(on);
this._refresh();
} }
getText() { getText() {

213
js/gl.ts
View File

@ -40,7 +40,7 @@ const tmpContext = tmpCanvas.getContext('2d');
const buildScreen = (mainData: ImageData, mixData?: ImageData | null) => { const buildScreen = (mainData: ImageData, mixData?: ImageData | null) => {
if (!tmpContext) { if (!tmpContext) {
throw new Error('No webgl context'); throw new Error('No 2d context');
} }
const details = screenEmu.C.NTSC_DETAILS; const details = screenEmu.C.NTSC_DETAILS;
@ -66,7 +66,7 @@ const whiteCol: Color = [255, 255, 255];
const blackCol: Color = [0, 0, 0]; const blackCol: Color = [0, 0, 0];
const notDirty: Region = { const notDirty: Region = {
top: 385, top: 193,
bottom: -1, bottom: -1,
left: 561, left: 561,
right: -1 right: -1
@ -84,8 +84,8 @@ export class LoresPageGL implements LoresPage {
// $80-$FF normal // $80-$FF normal
private _buffer: memory[] = []; private _buffer: memory[] = [];
private _monoMode = false;
private _refreshing = false; private _refreshing = false;
private _monoMode = false;
private _blink = false; private _blink = false;
dirty: Region = {...notDirty} dirty: Region = {...notDirty}
@ -102,20 +102,32 @@ export class LoresPageGL implements LoresPage {
this._buffer[1] = allocMemPages(0x4); this._buffer[1] = allocMemPages(0x4);
} }
_drawPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = data[off + 4] = c0; data[off + 0] = data[off + 4] = c0;
data[off + 1] = data[off + 5] = c1; data[off + 1] = data[off + 5] = c1;
data[off + 2] = data[off + 6] = c2; data[off + 2] = data[off + 6] = c2;
} }
_drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = c0; data[off + 0] = c0;
data[off + 1] = c1; data[off + 1] = c1;
data[off + 2] = c2; data[off + 2] = c2;
} }
private _checkInverse(val: byte) {
let inverse = false;
if (this.e) {
if (!_80colMode && !altCharMode) {
inverse = ((val & 0xc0) == 0x40) && this._blink;
}
} else {
inverse = !((val & 0x80) || (val & 0x40) && this._blink);
}
return inverse;
}
bank0(): MemoryPages { bank0(): MemoryPages {
return { return {
start: () => this._start(), start: () => this._start(),
@ -157,10 +169,6 @@ export class LoresPageGL implements LoresPage {
} }
this._buffer[bank][base] = val; this._buffer[bank][base] = val;
if (!_80colMode && bank === 1) {
return;
}
const col = (base % 0x80) % 0x28; const col = (base % 0x80) % 0x28;
const adj = off - col; const adj = off - col;
@ -182,19 +190,12 @@ export class LoresPageGL implements LoresPage {
if (x > this.dirty.right) { this.dirty.right = x; } if (x > this.dirty.right) { this.dirty.right = x; }
if (textMode || hiresMode || (mixedMode && row > 19)) { if (textMode || hiresMode || (mixedMode && row > 19)) {
let inverse;
if (this.e) {
if (!_80colMode && !altCharMode) {
inverse = ((val & 0xc0) == 0x40) && this._blink;
}
} else {
inverse = !((val & 0x80) || (val & 0x40) && this._blink);
}
fore = inverse ? blackCol : whiteCol;
back = inverse ? whiteCol : blackCol;
if (_80colMode) { if (_80colMode) {
const inverse = this._checkInverse(val);
fore = inverse ? blackCol : whiteCol;
back = inverse ? whiteCol : blackCol;
if (!enhanced) { if (!enhanced) {
val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val; val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val;
} else if (!altCharMode) { } else if (!altCharMode) {
@ -213,9 +214,14 @@ export class LoresPageGL implements LoresPage {
} }
offset += 553 * 4; offset += 553 * 4;
} }
} else { } else if (bank === 0) {
val = this._buffer[0][base]; val = this._buffer[0][base];
const inverse = this._checkInverse(val);
fore = inverse ? blackCol : whiteCol;
back = inverse ? whiteCol : blackCol;
if (!enhanced) { if (!enhanced) {
val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val; val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val;
} else if (!altCharMode) { } else if (!altCharMode) {
@ -267,7 +273,7 @@ export class LoresPageGL implements LoresPage {
} }
offset += 553 * 4; offset += 553 * 4;
} }
} else { } else if (bank === 0) {
let offset = (col * 14 + row * 560 * 8) * 4; let offset = (col * 14 + row * 560 * 8) * 4;
for (let jdx = 0; jdx < 8; jdx++) { for (let jdx = 0; jdx < 8; jdx++) {
let b = (jdx < 4) ? (val & 0x0f) : (val >> 4); let b = (jdx < 4) ? (val & 0x0f) : (val >> 4);
@ -348,6 +354,7 @@ export class LoresPageGL implements LoresPage {
setState(state: GraphicsState) { setState(state: GraphicsState) {
this.page = state.page; this.page = state.page;
this._monoMode = state.mono;
this._buffer[0] = new Uint8Array(state.buffer[0]); this._buffer[0] = new Uint8Array(state.buffer[0]);
this._buffer[1] = new Uint8Array(state.buffer[1]); this._buffer[1] = new Uint8Array(state.buffer[1]);
@ -403,19 +410,13 @@ export class LoresPageGL implements LoresPage {
***************************************************************************/ ***************************************************************************/
export class HiresPageGL implements HiresPage { export class HiresPageGL implements HiresPage {
public imageData: ImageData;
dirty: Region = {...notDirty};
private _buffer: memory[] = []; private _buffer: memory[] = [];
private _refreshing = false; private _refreshing = false;
private _monoMode = false; private _monoMode = false;
dirty: Region = {
top: 193,
bottom: -1,
left: 561,
right: -1
};
imageData: ImageData;
constructor( constructor(
private page: number) { private page: number) {
this.imageData = new ImageData(560, 192); this.imageData = new ImageData(560, 192);
@ -426,7 +427,7 @@ export class HiresPageGL implements HiresPage {
this._buffer[1] = allocMemPages(0x20); this._buffer[1] = allocMemPages(0x20);
} }
_drawPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = data[off + 4] = c0; data[off + 0] = data[off + 4] = c0;
@ -434,7 +435,7 @@ export class HiresPageGL implements HiresPage {
data[off + 2] = data[off + 6] = c2; data[off + 2] = data[off + 6] = c2;
} }
_drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) { private _drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) {
const c0 = color[0], c1 = color[1], c2 = color[2]; const c0 = color[0], c1 = color[1], c2 = color[2];
data[off + 0] = c0; data[off + 0] = c0;
@ -460,16 +461,16 @@ export class HiresPageGL implements HiresPage {
}; };
} }
_start() { return (0x20 * this.page); } private _start() { return (0x20 * this.page); }
_end() { return (0x020 * this.page) + 0x1f; } private _end() { return (0x020 * this.page) + 0x1f; }
_read(page: byte, off: byte, bank: bank) { private _read(page: byte, off: byte, bank: bank) {
const addr = (page << 8) | off, base = addr & 0x1FFF; const addr = (page << 8) | off, base = addr & 0x1FFF;
return this._buffer[bank][base]; return this._buffer[bank][base];
} }
_write(page: byte, off: byte, val: byte, bank: bank) { private _write(page: byte, off: byte, val: byte, bank: bank) {
const addr = (page << 8) | off; const addr = (page << 8) | off;
const base = addr & 0x1FFF; const base = addr & 0x1FFF;
@ -478,8 +479,6 @@ export class HiresPageGL implements HiresPage {
} }
this._buffer[bank][base] = val; this._buffer[bank][base] = val;
// let hbs = val & 0x80;
const col = (base % 0x80) % 0x28; const col = (base % 0x80) % 0x28;
const adj = off - col; const adj = off - col;
@ -492,116 +491,51 @@ export class HiresPageGL implements HiresPage {
rowb = base >> 10; rowb = base >> 10;
const data = this.imageData.data; const data = this.imageData.data;
let dx, dy; if ((rowa < 24) && (col < 40) && hiresMode) {
if ((rowa < 24) && (col < 40)) {
if (!hiresMode) {
return;
}
let y = rowa << 3 | rowb; let y = rowa << 3 | rowb;
if (y < this.dirty.top) { this.dirty.top = y; } if (y < this.dirty.top) { this.dirty.top = y; }
y += 1; y += 1;
if (y > this.dirty.bottom) { this.dirty.bottom = y; } if (y > this.dirty.bottom) { this.dirty.bottom = y; }
let x = col * 14 - 2; let x = col * 14 - 2;
if (x < this.dirty.left) { this.dirty.left = x; } if (x < this.dirty.left) { this.dirty.left = x; }
x += 18; x += 14;
if (x > this.dirty.right) { this.dirty.right = x; } if (x > this.dirty.right) { this.dirty.right = x; }
dy = rowa << 3 | rowb; const dy = rowa << 3 | rowb;
let bz, b0, b1, b2, b3, b4, c, hb;
if (doubleHiresMode) { if (doubleHiresMode) {
val &= 0x7f; const dx = col * 14 + (bank ? 0 : 7);
// Every 4 bytes is 7 pixels
// 2 bytes per bank
// b0 b1 b2 b3
// c0 c1 c2 c3 c4 c5 c6
// 76543210 76543210 76543210 76543210
// 1111222 2333344 4455556 6667777
const mod = col % 2, mcol = col - mod, baseOff = base - mod;
bz = this._buffer[0][baseOff - 1];
b0 = this._buffer[1][baseOff];
b1 = this._buffer[0][baseOff];
b2 = this._buffer[1][baseOff + 1];
b3 = this._buffer[0][baseOff + 1];
b4 = this._buffer[1][baseOff + 2];
c = [
0,
((b0 & 0x0f) >> 0), // 0
((b0 & 0x70) >> 4) | ((b1 & 0x01) << 3), // 1
((b1 & 0x1e) >> 1), // 2
((b1 & 0x60) >> 5) | ((b2 & 0x03) << 2), // 3
((b2 & 0x3c) >> 2), // 4
((b2 & 0x40) >> 6) | ((b3 & 0x07) << 1), // 5
((b3 & 0x78) >> 3), // 6
0
], // 7
hb = [
0,
b0 & 0x80, // 0
b0 & 0x80, // 1
b1 & 0x80, // 2
b2 & 0x80, // 3
b2 & 0x80, // 4
b3 & 0x80, // 5
b3 & 0x80, // 6
0
]; // 7
if (col > 0) {
c[0] = (bz & 0x78) >> 3;
hb[0] = bz & 0x80;
}
if (col < 39) {
c[8] = b4 & 0x0f;
hb[8] = b4 & 0x80;
}
dx = mcol * 14;
let offset = dx * 4 + dy * 280 * 4 * 2; let offset = dx * 4 + dy * 280 * 4 * 2;
for (let idx = 1; idx < 8; idx++) { let bits = val;
// hbs = hb[idx]; for (let jdx = 0; jdx < 7; jdx++, offset += 4) {
let bits = c[idx - 1] | (c[idx] << 4) | (c[idx + 1] << 8); if (bits & 0x01) {
for (let jdx = 0; jdx < 4; jdx++, offset += 4) { this._drawHalfPixel(data, offset, whiteCol);
if (bits & 0x10) {
this._drawHalfPixel(data, offset, whiteCol);
} else {
this._drawHalfPixel(data, offset, blackCol);
}
bits >>= 1;
}
}
} else {
val = this._buffer[0][base];
const hbs = val & 0x80;
val &= 0x7f;
dx = col * 14 - 2;
b0 = col > 0 ? this._buffer[0][base - 1] : 0;
b2 = col < 39 ? this._buffer[0][base + 1] : 0;
val |= (b2 & 0x3) << 7;
let v1 = b0 & 0x40,
v2 = val & 0x1,
color;
let offset = dx * 4 + dy * 560 * 4 + (hbs ? 4 : 0);
for (let idx = 0; idx < 9; idx++, offset += 8) {
val >>= 1;
if (v1) {
color = whiteCol;
} else { } else {
color = blackCol; this._drawHalfPixel(data, offset, blackCol);
} }
bits >>= 1;
if (dx > -1 && dx < 560) { }
this._drawPixel(data, offset, color); } else if (bank === 0) {
const hbs = val & 0x80;
const dx = col * 14;
let offset = dx * 4 + dy * 560 * 4;
if (hbs) {
const val0 = this._buffer[bank][base - 1] || 0;
if (val0 & 0x40) {
this._drawHalfPixel(data, offset, whiteCol);
} else {
this._drawHalfPixel(data, offset, blackCol);
} }
dx += 2; offset += 4;
}
v1 = v2; let bits = val;
v2 = val & 0x01; for (let idx = 0; idx < 7; idx++, offset += 8) {
if (bits & 0x01) {
this._drawPixel(data, offset, whiteCol);
} else {
this._drawPixel(data, offset, blackCol);
}
bits >>= 1;
} }
} }
} }
@ -654,6 +588,7 @@ export class HiresPageGL implements HiresPage {
setState(state: GraphicsState) { setState(state: GraphicsState) {
this.page = state.page; this.page = state.page;
this._monoMode = state.mono;
this._buffer[0] = new Uint8Array(state.buffer[0]); this._buffer[0] = new Uint8Array(state.buffer[0]);
this._buffer[1] = new Uint8Array(state.buffer[1]); this._buffer[1] = new Uint8Array(state.buffer[1]);
@ -885,12 +820,14 @@ export class VideoModesGL implements VideoModes {
if (altData) { if (altData) {
blitted = this.updateImage( blitted = this.updateImage(
altData, altData,
{ top: 0, left: 0, right: 560, bottom: 384 } { top: 0, left: 0, right: 560, bottom: 192 }
); );
} else if (hiresMode && !textMode) { } else if (hiresMode && !textMode) {
blitted = this.updateImage( blitted = this.updateImage(
hgr.imageData, hgr.dirty, hgr.imageData,
mixedMode ? gr.imageData : null, mixedMode ? gr.dirty : null, hgr.dirty,
mixedMode ? gr.imageData : null,
mixedMode ? gr.dirty : null
); );
} else { } else {
blitted = this.updateImage( blitted = this.updateImage(

21
js/mmu.ts
View File

@ -9,7 +9,6 @@
* implied warranty. * implied warranty.
*/ */
import { MemoryPages } from './types';
import CPU6502 from './cpu6502'; import CPU6502 from './cpu6502';
import RAM, { RAMState } from './ram'; import RAM, { RAMState } from './ram';
import ROM, { ROMState } from './roms/rom'; import ROM, { ROMState } from './roms/rom';
@ -95,17 +94,9 @@ const LOC = {
READWRBSR1: 0x8b, READWRBSR1: 0x8b,
}; };
class Switches implements MemoryPages { class Switches implements Memory {
constructor(private mmu: MMU) {} constructor(private mmu: MMU) {}
start() {
return 0xC0;
}
end() {
return 0xC0;
}
read(_page: byte, off: byte) { read(_page: byte, off: byte) {
return this.mmu._access(off) || 0; return this.mmu._access(off) || 0;
} }
@ -115,19 +106,11 @@ class Switches implements MemoryPages {
} }
} }
class AuxRom implements MemoryPages { class AuxRom implements Memory {
constructor( constructor(
private readonly mmu: MMU, private readonly mmu: MMU,
private readonly rom: ROM) { } private readonly rom: ROM) { }
start() {
return 0xc1;
}
end() {
return 0xcf;
}
read(page: byte, off: byte) { read(page: byte, off: byte) {
if (page == 0xc3) { if (page == 0xc3) {
this.mmu._setIntc8rom(true); this.mmu._setIntc8rom(true);