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AppleWin/source/Video.cpp
tomch a1debc40e4 Merge from Tom branch to trunk 
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2007-05-28 11:16:42 +00:00

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/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 1994-1996, Michael O'Brien
Copyright (C) 1999-2001, Oliver Schmidt
Copyright (C) 2002-2005, Tom Charlesworth
Copyright (C) 2006-2007, Tom Charlesworth, Michael Pohoreski, Nick Westgate
AppleWin is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
AppleWin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Description: Emulation of video modes
*
* Author: Various
*/
#include "StdAfx.h"
#pragma hdrstop
#include "..\resource\resource.h"
/* reference: technote tn-iigs-063 "Master Color Values"
Color Color Register LR HR DHR Master Color R,G,B
Name Value # # # Value
----------------------------------------------------
Black 0 0 0,4 0 $0000 (0,0,0) -> (00,00,00) Windows
(Magenta) Deep Red 1 1 1 $0D03 (D,0,3) -> (D0,00,30) Custom
Dark Blue 2 2 8 $0009 (0,0,9) -> (00,00,80) Windows
(Violet) Purple 3 3 2 9 $0D2D (D,2,D) -> (FF,00,FF) Windows
Dark Green 4 4 4 $0072 (0,7,2) -> (00,80,00) Windows
(Gray 1) Dark Gray 5 5 5 $0555 (5,5,5) -> (80,80,80) Windows
(Blue) Medium Blue 6 6 6 C $022F (2,2,F) -> (00,00,FF) Windows
(Cyan) Light Blue 7 7 D $06AF (6,A,F) -> (60,A0,FF) Custom
Brown 8 8 2 $0850 (8,5,0) -> (80,50,00) Custom
Orange 9 9 5 3 $0F60 (F,6,0) -> (FF,80,00) Custom (modified to match better with the other Hi-Res Colors)
(Gray 2) Light Gray A A A $0AAA (A,A,A) -> (C0,C0,C0) Windows
Pink B B B $0F98 (F,9,8) -> (FF,90,80) Custom
(Green) Light Green C C 1 6 $01D0 (1,D,0) -> (00,FF,00) Windows
Yellow D D 7 $0FF0 (F,F,0) -> (FF,FF,00) Windows
(Aqua) Aquamarine E E E $04F9 (4,F,9) -> (40,FF,90) Custom
White F F 3,7 F $0FFF (F,F,F) -> (FF,FF,FF) Windows
LR: Lo-Res HR: Hi-Res DHR: Double Hi-Res */
#define FLASH_80_COL 1
#define HALF_SHIFT_DITHER 0
// STANDARD WINDOWS COLORS
#define CREAM 0xF6
#define MEDIUM_GRAY 0xF7
#define DARK_GRAY 0xF8
#define RED 0xF9
#define GREEN 0xFA
#define YELLOW 0xFB
#define BLUE 0xFC
#define MAGENTA 0xFD
#define CYAN 0xFE
#define WHITE 0xFF
enum Color_Palette_Index_e
{
// Really need to have Quater Green and Quarter Blue for Hi-Res
BLACK
, DARK_RED
, DARK_GREEN // Half Green
, DARK_YELLOW
, DARK_BLUE // Half Blue
, DARK_MAGENTA
, DARK_CYAN
, LIGHT_GRAY
, MONEY_GREEN
, SKY_BLUE
// OUR CUSTOM COLORS
, DEEP_RED
, LIGHT_BLUE
, BROWN
, ORANGE
, PINK
, AQUA
// CUSTOM HGR COLORS (don't change order) - For tv emulation g_nAppMode
, HGR_BLACK
, HGR_WHITE
, HGR_BLUE
, HGR_RED
, HGR_GREEN
, HGR_MAGENTA
, HGR_GREY1
, HGR_GREY2
, HGR_YELLOW
, HGR_AQUA
, HGR_PURPLE
, HGR_PINK
// USER CUSTOMIZABLE COLOR
, MONOCHROME_CUSTOM
// Pre-set "Monochromes"
, MONOCHROME_AMBER
, MONOCHROME_GREEN
, MONOCHROME_WHITE
, NUM_COLOR_PALETTE
};
//#define SRCOFFS_40COL 0
//#define SRCOFFS_IIPLUS (SRCOFFS_40COL + 256)
//#define SRCOFFS_80COL (SRCOFFS_IIPLUS + 256)
//#define SRCOFFS_LORES (SRCOFFS_80COL + 128)
//#define SRCOFFS_HIRES (SRCOFFS_LORES + 16)
//#define SRCOFFS_DHIRES (SRCOFFS_HIRES + 512)
//#define SRCOFFS_TOTAL (SRCOFFS_DHIRES + 2560)
const int SRCOFFS_40COL = 0;
const int SRCOFFS_IIPLUS = (SRCOFFS_40COL + 256);
const int SRCOFFS_80COL = (SRCOFFS_IIPLUS + 256);
const int SRCOFFS_LORES = (SRCOFFS_80COL + 128);
const int SRCOFFS_HIRES = (SRCOFFS_LORES + 16);
const int SRCOFFS_DHIRES = (SRCOFFS_HIRES + 512);
const int SRCOFFS_TOTAL = (SRCOFFS_DHIRES + 2560);
//#define VF_80COL 0x00000001
//#define VF_DHIRES 0x00000002
//#define VF_HIRES 0x00000004
//#define VF_MASK2 0x00000008
//#define VF_MIXED 0x00000010
//#define VF_PAGE2 0x00000020
//#define VF_TEXT 0x00000040
enum VideoFlag_e
{
VF_80COL = 0x00000001,
VF_DHIRES = 0x00000002,
VF_HIRES = 0x00000004,
VF_MASK2 = 0x00000008,
VF_MIXED = 0x00000010,
VF_PAGE2 = 0x00000020,
VF_TEXT = 0x00000040
};
#define SW_80COL (vidmode & VF_80COL)
#define SW_DHIRES (vidmode & VF_DHIRES)
#define SW_HIRES (vidmode & VF_HIRES)
#define SW_MASK2 (vidmode & VF_MASK2)
#define SW_MIXED (vidmode & VF_MIXED)
#define SW_PAGE2 (vidmode & VF_PAGE2)
#define SW_TEXT (vidmode & VF_TEXT)
#define SETSOURCEPIXEL(x,y,c) g_aSourceStartofLine[(y)][(x)] = (c)
#define SETFRAMECOLOR(i,r,g,b) framebufferinfo->bmiColors[i].rgbRed = r; \
framebufferinfo->bmiColors[i].rgbGreen = g; \
framebufferinfo->bmiColors[i].rgbBlue = b;
#define HGR_MATRIX_YOFFSET 2 // For tv emulation g_nAppMode
// video scanner constants
int const kHBurstClock = 53; // clock when Color Burst starts
int const kHBurstClocks = 4; // clocks per Color Burst duration
int const kHClock0State = 0x18; // H[543210] = 011000
int const kHClocks = 65; // clocks per horizontal scan (including HBL)
int const kHPEClock = 40; // clock when HPE (horizontal preset enable) goes low
int const kHPresetClock = 41; // clock when H state presets
int const kHSyncClock = 49; // clock when HSync starts
int const kHSyncClocks = 4; // clocks per HSync duration
int const kNTSCScanLines = 262; // total scan lines including VBL (NTSC)
int const kNTSCVSyncLine = 224; // line when VSync starts (NTSC)
int const kPALScanLines = 312; // total scan lines including VBL (PAL)
int const kPALVSyncLine = 264; // line when VSync starts (PAL)
int const kVLine0State = 0x100; // V[543210CBA] = 100000000
int const kVPresetLine = 256; // line when V state presets
int const kVSyncLines = 4; // lines per VSync duration
typedef bool (*UpdateFunc_t)(int,int,int,int,int);
static BYTE celldirty[40][32];
static COLORREF customcolors[NUM_COLOR_PALETTE]; // MONOCHROME is last custom color
static HBITMAP g_hDeviceBitmap;
static HDC g_hDeviceDC;
static LPBYTE framebufferbits;
static LPBITMAPINFO framebufferinfo;
const int MAX_FRAME_Y = 384; // 192 scan lines * 2x zoom = 384
static LPBYTE frameoffsettable[384];
static LPBYTE g_pHiresBank1;
static LPBYTE g_pHiresBank0;
HBITMAP g_hLogoBitmap;
static HPALETTE g_hPalette;
static HBITMAP g_hSourceBitmap;
static LPBYTE g_pSourcePixels;
static LPBITMAPINFO g_pSourceHeader;
const int MAX_SOURCE_Y = 512;
static LPBYTE g_aSourceStartofLine[ MAX_SOURCE_Y ];
static LPBYTE g_pTextBank1; // Aux
static LPBYTE g_pTextBank0; // Main
// For tv emulation g_nAppMode
// 2 extra scan lines on bottom?
static BYTE hgrpixelmatrix[280][192 + 2 * HGR_MATRIX_YOFFSET];
static BYTE colormixbuffer[6];
static WORD colormixmap[6][6][6];
//
static int g_nAltCharSetOffset = 0; // alternate character set
static BOOL displaypage2 = 0;
static LPBYTE framebufferaddr = (LPBYTE)0;
static LONG framebufferpitch = 0;
BOOL graphicsmode = 0;
static BOOL hasrefreshed = 0;
static DWORD lastpageflip = 0;
COLORREF monochrome = RGB(0xC0,0xC0,0xC0);
static BOOL rebuiltsource = 0;
static BOOL redrawfull = 1;
static DWORD dwVBlCounter = 0;
static LPBYTE vidlastmem = NULL;
static DWORD vidmode = VF_TEXT;
DWORD videotype = VT_COLOR_TVEMU;
static bool g_bTextFlashState = false;
static bool g_bTextFlashFlag = false;
static bool bVideoScannerNTSC = true; // NTSC video scanning (or PAL)
//-------------------------------------
// Video consts:
const UINT nVBlStop_NTSC = 21;
const UINT nVBlStop_PAL = 29;
//-------------------------------------
void DrawDHiResSource ();
void DrawHiResSource ();
void DrawHiResSourceHalfShiftFull ();
void DrawHiResSourceHalfShiftDim ();
void DrawLoResSource ();
void DrawMonoDHiResSource ();
void DrawMonoHiResSource ();
void DrawMonoLoResSource ();
void DrawMonoTextSource (HDC dc);
void DrawTextSource (HDC dc);
//===========================================================================
void __stdcall CopySource (int destx, int desty,
int xsize, int ysize,
int sourcex, int sourcey)
{
LPBYTE currdestptr = frameoffsettable [desty] +destx;
LPBYTE currsourceptr = g_aSourceStartofLine[sourcey]+sourcex;
int bytesleft;
while (ysize--)
{
bytesleft = xsize;
while (bytesleft & 3)
{
--bytesleft;
*(currdestptr+bytesleft) = *(currsourceptr+bytesleft);
}
while (bytesleft)
{
bytesleft -= 4;
*(LPDWORD)(currdestptr+bytesleft) = *(LPDWORD)(currsourceptr+bytesleft);
}
currdestptr -= framebufferpitch;
currsourceptr -= SRCOFFS_TOTAL;
}
}
//===========================================================================
void CreateFrameOffsetTable (LPBYTE addr, LONG pitch) {
if (framebufferaddr == addr &&
framebufferpitch == pitch)
return;
framebufferaddr = addr;
framebufferpitch = pitch;
// CREATE THE OFFSET TABLE FOR EACH SCAN LINE IN THE FRAME BUFFER
for (int loop = 0; loop < 384; loop++)
frameoffsettable[loop] = framebufferaddr+framebufferpitch*(383-loop);
}
//===========================================================================
void CreateIdentityPalette () {
if (g_hPalette)
DeleteObject(g_hPalette);
// SET FRAME BUFFER TABLE ENTRIES TO CUSTOM COLORS
SETFRAMECOLOR(DEEP_RED, 0xD0,0x00,0x30);
SETFRAMECOLOR(LIGHT_BLUE,0x60,0xA0,0xFF);
SETFRAMECOLOR(BROWN, 0x80,0x50,0x00);
SETFRAMECOLOR(ORANGE, 0xFF,0x80,0x00);
SETFRAMECOLOR(PINK, 0xFF,0x90,0x80);
SETFRAMECOLOR(AQUA, 0x40,0xFF,0x90);
SETFRAMECOLOR(HGR_BLACK, 0x00,0x00,0x00); // For tv emulation g_nAppMode
SETFRAMECOLOR(HGR_WHITE, 0xFF,0xFF,0xFE);
SETFRAMECOLOR(HGR_BLUE, 0x00,0x80,0xFF);
SETFRAMECOLOR(HGR_RED, 0xF0,0x50,0x00);
SETFRAMECOLOR(HGR_GREEN, 0x20,0xC0,0x00);
SETFRAMECOLOR(HGR_MAGENTA,0xA0,0x00,0xFF);
SETFRAMECOLOR(HGR_GREY1, 0x80,0x80,0x80);
SETFRAMECOLOR(HGR_GREY2, 0x80,0x80,0x80);
SETFRAMECOLOR(HGR_YELLOW, 0xD0,0xB0,0x10);
SETFRAMECOLOR(HGR_AQUA, 0x20,0xB0,0xB0);
SETFRAMECOLOR(HGR_PURPLE, 0x60,0x50,0xE0);
SETFRAMECOLOR(HGR_PINK, 0xD0,0x40,0xA0);
SETFRAMECOLOR( MONOCHROME_CUSTOM
, GetRValue(monochrome)
, GetGValue(monochrome)
, GetBValue(monochrome) );
SETFRAMECOLOR( MONOCHROME_AMBER, 0xFF,0x80,0x00);
SETFRAMECOLOR( MONOCHROME_GREEN, 0x00,0xC0,0x00);
SETFRAMECOLOR( MONOCHROME_WHITE, 0xFF,0xFF,0xFF);
// IF WE ARE IN A PALETTIZED VIDEO MODE, CREATE AN IDENTITY PALETTE
HWND window = GetDesktopWindow();
HDC dc = GetDC(window);
int colors = GetDeviceCaps(dc,SIZEPALETTE);
int system = GetDeviceCaps(dc,NUMCOLORS);
if ((GetDeviceCaps(dc,RASTERCAPS) & RC_PALETTE) && (colors <= 256))
{
// GET THE PALETTE ENTRIES OF THE LOGO
RGBQUAD logotable[256];
ZeroMemory(logotable,sizeof(logotable));
if (g_hLogoBitmap) {
HDC memdc = CreateCompatibleDC(dc);
SelectObject(memdc,g_hLogoBitmap);
GetDIBColorTable(memdc,0,colors,logotable);
DeleteDC(memdc);
}
// CREATE A PALETTE ENTRY ARRAY
LOGPALETTE *paldata = (LOGPALETTE *)VirtualAlloc(NULL,
sizeof(LOGPALETTE)
+256*sizeof(PALETTEENTRY),
MEM_COMMIT,
PAGE_READWRITE);
paldata->palVersion = 0x300;
paldata->palNumEntries = colors;
GetSystemPaletteEntries(dc,0,colors,paldata->palPalEntry);
// FILL IN THE PALETTE ENTRIES
int paletteindex = 0;
int logoindex = 0;
int halftoneindex = 0;
// COPY THE SYSTEM PALETTE ENTRIES AT THE BEGINNING OF THE PALETTE
for (; paletteindex < system/2; paletteindex++)
paldata->palPalEntry[paletteindex].peFlags = 0;
// FILL IN THE MIDDLE PORTION OF THE PALETTE WITH OUR OWN COLORS
for (int ourindex = DEEP_RED; ourindex <= NUM_COLOR_PALETTE; ourindex++) {
paldata->palPalEntry[paletteindex].peRed = framebufferinfo->bmiColors[ourindex].rgbRed;
paldata->palPalEntry[paletteindex].peGreen = framebufferinfo->bmiColors[ourindex].rgbGreen;
paldata->palPalEntry[paletteindex].peBlue = framebufferinfo->bmiColors[ourindex].rgbBlue;
paldata->palPalEntry[paletteindex].peFlags = PC_NOCOLLAPSE;
paletteindex++;
}
for (; paletteindex < colors-system/2; paletteindex++) {
// IF THIS PALETTE ENTRY IS NEEDED FOR THE LOGO, COPY IN THE LOGO COLOR
if (logotable[logoindex].rgbRed &&
logotable[logoindex].rgbGreen &&
logotable[logoindex].rgbBlue) {
paldata->palPalEntry[paletteindex].peRed = logotable[logoindex].rgbRed;
paldata->palPalEntry[paletteindex].peGreen = logotable[logoindex].rgbGreen;
paldata->palPalEntry[paletteindex].peBlue = logotable[logoindex].rgbBlue;
}
// OTHERWISE, ADD A HALFTONING COLOR, SO THAT OTHER APPLICATIONS
// RUNNING IN THE BACKGROUND WILL HAVE SOME REASONABLE COLORS TO USE
else {
static BYTE halftonetable[6] = {32,64,96,160,192,224};
paldata->palPalEntry[paletteindex].peRed = halftonetable[halftoneindex % 6];
paldata->palPalEntry[paletteindex].peGreen = halftonetable[halftoneindex/6 % 6];
paldata->palPalEntry[paletteindex].peBlue = halftonetable[halftoneindex/36 % 6];
++halftoneindex;
}
++logoindex;
paldata->palPalEntry[paletteindex].peFlags = PC_NOCOLLAPSE;
}
// COPY THE SYSTEM PALETTE ENTRIES AT THE END OF THE PALETTE
for (; paletteindex < colors; paletteindex++)
paldata->palPalEntry[paletteindex].peFlags = 0;
// FILL THE FRAME BUFFER TABLE WITH COLORS FROM OUR PALETTE
for (int loop = 0; loop < colors; loop++) {
framebufferinfo->bmiColors[loop].rgbRed = paldata->palPalEntry[loop].peRed;
framebufferinfo->bmiColors[loop].rgbGreen = paldata->palPalEntry[loop].peGreen;
framebufferinfo->bmiColors[loop].rgbBlue = paldata->palPalEntry[loop].peBlue;
}
// CREATE THE PALETTE
g_hPalette = CreatePalette(paldata);
VirtualFree(paldata,0,MEM_RELEASE);
}
else // OTHERWISE, FILL THE FRAME BUFFER TABLE WITH THE STANDARD WINDOWS COLORS
{
SETFRAMECOLOR(BLACK, 0x00,0x00,0x00);
SETFRAMECOLOR(DARK_RED, 0x80,0x00,0x00);
SETFRAMECOLOR(DARK_GREEN, 0x00,0x80,0x00);
SETFRAMECOLOR(DARK_YELLOW, 0x80,0x80,0x00);
SETFRAMECOLOR(DARK_BLUE, 0x00,0x00,0x80);
SETFRAMECOLOR(DARK_MAGENTA,0x80,0x00,0x80);
SETFRAMECOLOR(DARK_CYAN, 0x00,0x80,0x80);
SETFRAMECOLOR(LIGHT_GRAY, 0xC0,0xC0,0xC0);
SETFRAMECOLOR(MONEY_GREEN, 0xC0,0xDC,0xC0);
SETFRAMECOLOR(SKY_BLUE, 0xA6,0xCA,0xF0);
SETFRAMECOLOR(CREAM, 0xFF,0xFB,0xF0);
SETFRAMECOLOR(MEDIUM_GRAY, 0xA0,0xA0,0xA4);
SETFRAMECOLOR(DARK_GRAY, 0x80,0x80,0x80);
SETFRAMECOLOR(RED, 0xFF,0x00,0x00);
SETFRAMECOLOR(GREEN, 0x00,0xFF,0x00);
SETFRAMECOLOR(YELLOW, 0xFF,0xFF,0x00);
SETFRAMECOLOR(BLUE, 0x00,0x00,0xFF);
SETFRAMECOLOR(MAGENTA, 0xFF,0x00,0xFF);
SETFRAMECOLOR(CYAN, 0x00,0xFF,0xFF);
SETFRAMECOLOR(WHITE, 0xFF,0xFF,0xFF);
g_hPalette = (HPALETTE)0;
}
ReleaseDC(window,dc);
}
//===========================================================================
void CreateDIBSections () {
CopyMemory(g_pSourceHeader->bmiColors,framebufferinfo->bmiColors,256*sizeof(RGBQUAD));
// CREATE THE DEVICE CONTEXT
HWND window = GetDesktopWindow();
HDC dc = GetDC(window);
if (g_hDeviceDC)
DeleteDC(g_hDeviceDC);
g_hDeviceDC = CreateCompatibleDC(dc);
// CREATE THE FRAME BUFFER DIB SECTION
if (g_hDeviceBitmap)
DeleteObject(g_hDeviceBitmap);
g_hDeviceBitmap = CreateDIBSection(dc,framebufferinfo,DIB_RGB_COLORS,
(LPVOID *)&framebufferbits,0,0);
SelectObject(g_hDeviceDC,g_hDeviceBitmap);
// CREATE THE SOURCE IMAGE DIB SECTION
HDC sourcedc = CreateCompatibleDC(dc);
ReleaseDC(window,dc);
if (g_hSourceBitmap)
DeleteObject(g_hSourceBitmap);
g_hSourceBitmap = CreateDIBSection(
sourcedc,g_pSourceHeader,DIB_RGB_COLORS,
(LPVOID *)&g_pSourcePixels,0,0);
SelectObject(sourcedc,g_hSourceBitmap);
// CREATE THE OFFSET TABLE FOR EACH SCAN LINE IN THE SOURCE IMAGE
for (int y = 0; y < MAX_SOURCE_Y; y++)
g_aSourceStartofLine[ y ] = g_pSourcePixels + SRCOFFS_TOTAL*((MAX_SOURCE_Y-1) - y);
// DRAW THE SOURCE IMAGE INTO THE SOURCE BIT BUFFER
ZeroMemory(g_pSourcePixels,SRCOFFS_TOTAL*512);
if ((videotype != VT_MONO_CUSTOM) &&
(videotype != VT_MONO_AMBER ) &&
(videotype != VT_MONO_GREEN ) &&
(videotype != VT_MONO_WHITE ))
{
DrawTextSource(sourcedc);
DrawLoResSource();
if (videotype == VT_COLOR_HALF_SHIFT_DIM)
DrawHiResSourceHalfShiftDim();
else
DrawHiResSource();
DrawDHiResSource();
}
else
{
DrawMonoTextSource(sourcedc);
DrawMonoLoResSource();
DrawMonoHiResSource();
DrawMonoDHiResSource();
}
DeleteDC(sourcedc);
}
//===========================================================================
void DrawDHiResSource () {
BYTE colorval[16] = {BLACK, DARK_BLUE, DARK_GREEN,BLUE,
BROWN, LIGHT_GRAY,GREEN, AQUA,
DEEP_RED,MAGENTA, DARK_GRAY, LIGHT_BLUE,
ORANGE, PINK, YELLOW, WHITE};
#define OFFSET 3
#define SIZE 10
for (int column = 0; column < 256; column++) {
int coloffs = SIZE * column;
for (unsigned byteval = 0; byteval < 256; byteval++) {
int color[SIZE];
ZeroMemory(color,sizeof(color));
unsigned pattern = MAKEWORD(byteval,column);
int pixel;
for (pixel = 1; pixel < 15; pixel++) {
if (pattern & (1 << pixel)) {
int pixelcolor = 1 << ((pixel-OFFSET) & 3);
if ((pixel >= OFFSET+2) && (pixel < SIZE+OFFSET+2) && (pattern & (0x7 << (pixel-4))))
color[pixel-(OFFSET+2)] |= pixelcolor;
if ((pixel >= OFFSET+1) && (pixel < SIZE+OFFSET+1) && (pattern & (0xF << (pixel-4))))
color[pixel-(OFFSET+1)] |= pixelcolor;
if ((pixel >= OFFSET+0) && (pixel < SIZE+OFFSET+0))
color[pixel-(OFFSET+0)] |= pixelcolor;
if ((pixel >= OFFSET-1) && (pixel < SIZE+OFFSET-1) && (pattern & (0xF << (pixel+1))))
color[pixel-(OFFSET-1)] |= pixelcolor;
if ((pixel >= OFFSET-2) && (pixel < SIZE+OFFSET-2) && (pattern & (0x7 << (pixel+2))))
color[pixel-(OFFSET-2)] |= pixelcolor;
}
}
if (videotype == VT_COLOR_TEXT_OPTIMIZED)
{
/***
activate for fringe reduction on white hgr text
drawback: loss of color mix patterns in hgr g_nAppMode.
select videotype by index
***/
for (pixel = 0; pixel < 13; pixel++)
{
if ((pattern & (0xF << pixel)) == (unsigned)(0xF << pixel))
for (int pos = pixel; pos < pixel + 4; pos++)
if (pos >= OFFSET && pos < SIZE+OFFSET)
color[pos-OFFSET] = 15;
}
}
int y = byteval << 1;
for (int x = 0; x < SIZE; x++) {
SETSOURCEPIXEL(SRCOFFS_DHIRES+coloffs+x,y ,colorval[color[x]]);
SETSOURCEPIXEL(SRCOFFS_DHIRES+coloffs+x,y+1,colorval[color[x]]);
}
}
}
#undef SIZE
#undef OFFSET
}
enum ColorMapping
{
CM_Magenta
, CM_Blue
, CM_Green
, CM_Orange
, CM_Black
, CM_White
, NUM_COLOR_MAPPING
};
const BYTE aColorIndex[ NUM_COLOR_MAPPING ] =
{
HGR_MAGENTA
, HGR_BLUE
, HGR_GREEN
, HGR_RED
, HGR_BLACK
, HGR_WHITE
};
const BYTE aColorDimmedIndex[ NUM_COLOR_MAPPING ] =
{
DARK_MAGENTA, // <- HGR_MAGENTA
DARK_BLUE , // <- HGR_BLUE
DARK_GREEN , // <- HGR_GREEN
DEEP_RED , // <- HGR_RED
HGR_BLACK , // no change
LIGHT_GRAY // HGR_WHITE
};
//===========================================================================
void DrawHiResSourceHalfShiftDim ()
{
// BYTE colorval[6] = {MAGENTA,BLUE,GREEN,ORANGE,BLACK,WHITE};
// BYTE colorval[6] = {HGR_MAGENTA,HGR_BLUE,HGR_GREEN,HGR_RED,HGR_BLACK,HGR_WHITE};
for (int iColumn = 0; iColumn < 16; iColumn++)
{
int coloffs = iColumn << 5;
for (unsigned iByte = 0; iByte < 256; iByte++)
{
int aPixels[11];
aPixels[ 0] = iColumn & 4;
aPixels[ 1] = iColumn & 8;
aPixels[ 9] = iColumn & 1;
aPixels[10] = iColumn & 2;
int nBitMask = 1;
int iPixel;
for (iPixel = 2; iPixel < 9; iPixel++) {
aPixels[iPixel] = ((iByte & nBitMask) != 0);
nBitMask <<= 1;
}
int hibit = ((iByte & 0x80) != 0);
int x = 0;
int y = iByte << 1;
while (x < 28)
{
int adj = (x >= 14) << 1;
int odd = (x >= 14);
for (iPixel = 2; iPixel < 9; iPixel++)
{
int color = CM_Black;
if (aPixels[iPixel])
{
if (aPixels[iPixel-1] || aPixels[iPixel+1])
{
color = CM_White;
}
else
color = ((odd ^ (iPixel&1)) << 1) | hibit;
}
else if (aPixels[iPixel-1] && aPixels[iPixel+1])
{
/***
activate for fringe reduction on white hgr text -
drawback: loss of color mix patterns in hgr g_nAppMode.
select videotype by index exclusion
***/
if (!(aPixels[iPixel-2] && aPixels[iPixel+2]))
color = ((odd ^ !(iPixel&1)) << 1) | hibit;
}
/*
Address Binary -> Displayed
2000:01 0---0001 -> 1 0 0 0 column 1
2400:81 1---0001 -> 1 0 0 0 half-pixel shift right
2800:02 1---0010 -> 0 1 0 0 column 2
2000:02 column 2
2400:82 half-pixel shift right
2800:04 column 3
2000:03 0---0011 -> 1 1 0 0 column 1 & 2
2400:83 1---0011 -> 1 1 0 0 half-pixel shift right
2800:06 1---0110 -> 0 1 1 0 column 2 & 3
@reference: see Beagle Bro's Disk: "Silicon Salid", File: DOUBLE HI-RES
Fortunately double-hires is supported via pixel doubling, so we can do half-pixel shifts ;-)
*/
switch (color)
{
case CM_Magenta:
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , HGR_MAGENTA ); // aColorIndex
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , DARK_MAGENTA ); // aColorDimmedIndex
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, HGR_MAGENTA ); // aColorIndex
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, DARK_MAGENTA ); // aColorDimmedIndex
break;
case CM_Blue :
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , HGR_BLUE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+2,y , DARK_BLUE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, HGR_BLUE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+2,y+1, DARK_BLUE );
// Prevent column gaps
if (hibit)
{
if (iPixel <= 2)
{
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , DARK_BLUE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, DARK_BLUE );
}
}
break;
case CM_Green :
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , HGR_GREEN );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , DARK_GREEN );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, HGR_GREEN );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, DARK_GREEN );
break;
case CM_Orange:
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , HGR_RED );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+2,y , BROWN ); // DARK_RED is a bit "too" red
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, HGR_RED );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+2,y+1, BROWN ); // DARK_RED is a bit "too" red
// Prevent column gaps
if (hibit)
{
if (iPixel <= 2)
{
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , BROWN ); // DARK_RED is a bit "too" red
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, BROWN ); // DARK_RED is a bit "too" red
}
}
break;
case CM_Black :
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , HGR_BLACK );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , HGR_BLACK );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, HGR_BLACK );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, HGR_BLACK );
break;
case CM_White :
#if HALF_SHIFT_DIM
// 50% dither -- would look OK, except Gumball, on the "Gumball" font has splotches
// SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , HGR_WHITE );
// SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, HGR_WHITE );
// if (! hibit)
// {
// SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , HGR_WHITE );
// SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, HGR_WHITE );
// }
// 75% dither -- looks kind of nice actually. Passes the Gumball cutscene quality test!
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , HGR_WHITE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, HGR_WHITE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , LIGHT_GRAY );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, LIGHT_GRAY );
#else
// Don't dither / half-shift white, since DROL cutscene looks bad :(
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , HGR_WHITE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y , HGR_WHITE );
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, HGR_WHITE ); // LIGHT_GRAY <- for that half scan-line look
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1, HGR_WHITE ); // LIGHT_GRAY <- for that half scan-line look
// Prevent column gaps
if (hibit)
{
if (iPixel <= 2)
{
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y , HGR_WHITE ); // LIGHT_GRAY HGR_GREY1
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1, HGR_WHITE ); // LIGHT_GRAY HGR_GREY1
}
}
#endif
break;
default:
break;
}
x += 2;
}
}
}
}
}
//===========================================================================
void DrawHiResSource ()
{
// BYTE colorval[6] = {MAGENTA,BLUE,GREEN,ORANGE,BLACK,WHITE};
// BYTE colorval[6] = {HGR_MAGENTA,HGR_BLUE,HGR_GREEN,HGR_RED,HGR_BLACK,HGR_WHITE};
for (int iColumn = 0; iColumn < 16; iColumn++)
{
int coloffs = iColumn << 5;
for (unsigned iByte = 0; iByte < 256; iByte++)
{
int aPixels[11];
aPixels[ 0] = iColumn & 4;
aPixels[ 1] = iColumn & 8;
aPixels[ 9] = iColumn & 1;
aPixels[10] = iColumn & 2;
int nBitMask = 1;
int iPixel;
for (iPixel = 2; iPixel < 9; iPixel++) {
aPixels[iPixel] = ((iByte & nBitMask) != 0);
nBitMask <<= 1;
}
int hibit = ((iByte & 0x80) != 0);
int x = 0;
int y = iByte << 1;
while (x < 28)
{
int adj = (x >= 14) << 1;
int odd = (x >= 14);
for (iPixel = 2; iPixel < 9; iPixel++)
{
int color = CM_Black;
if (aPixels[iPixel])
{
if (aPixels[iPixel-1] || aPixels[iPixel+1])
color = CM_White;
else
color = ((odd ^ (iPixel&1)) << 1) | hibit;
}
else if (aPixels[iPixel-1] && aPixels[iPixel+1])
{
/***
activate for fringe reduction on white hgr text -
drawback: loss of color mix patterns in hgr g_nAppMode.
select videotype by index exclusion
***/
if ((videotype == VT_COLOR_STANDARD) || (videotype == VT_COLOR_TVEMU) || !(aPixels[iPixel-2] && aPixels[iPixel+2]))
color = ((odd ^ !(iPixel&1)) << 1) | hibit; // // No white HGR text optimization
}
// Colors - Top/Bottom Left/Right
// cTL cTR
// cBL cBR
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y ,aColorIndex[color]); // TL
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y ,aColorIndex[color]); // TR
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj ,y+1,aColorIndex[color]); // BL
SETSOURCEPIXEL(SRCOFFS_HIRES+coloffs+x+adj+1,y+1,aColorIndex[color]); // BR
x += 2;
}
}
}
}
}
//===========================================================================
void DrawLoResSource () {
BYTE colorval[16] = {BLACK, DEEP_RED, DARK_BLUE, MAGENTA,
DARK_GREEN,DARK_GRAY,BLUE, LIGHT_BLUE,
BROWN, ORANGE, LIGHT_GRAY,PINK,
GREEN, YELLOW, AQUA, WHITE};
for (int color = 0; color < 16; color++)
for (int x = 0; x < 16; x++)
for (int y = 0; y < 16; y++)
SETSOURCEPIXEL(SRCOFFS_LORES+x,(color << 4)+y,colorval[color]);
}
//===========================================================================
int GetMonochromeIndex()
{
int iMonochrome;
switch (videotype)
{
case VT_MONO_AMBER: iMonochrome = MONOCHROME_AMBER ; break;
case VT_MONO_GREEN: iMonochrome = MONOCHROME_GREEN ; break;
case VT_MONO_WHITE: iMonochrome = MONOCHROME_WHITE ; break;
default : iMonochrome = MONOCHROME_CUSTOM; break;
}
return iMonochrome;
}
//===========================================================================
void DrawMonoDHiResSource ()
{
int iMonochrome = GetMonochromeIndex();
for (int column = 0; column < 256; column++)
{
int coloffs = 10 * column;
for (unsigned byteval = 0; byteval < 256; byteval++)
{
unsigned pattern = MAKEWORD(byteval,column);
int y = byteval << 1;
for (int x = 0; x < 10; x++)
{
BYTE colorval = pattern & (1 << (x+3)) ? iMonochrome : BLACK;
SETSOURCEPIXEL(SRCOFFS_DHIRES+coloffs+x,y ,colorval);
SETSOURCEPIXEL(SRCOFFS_DHIRES+coloffs+x,y+1,colorval);
}
}
}
}
//===========================================================================
void DrawMonoHiResSource ()
{
int iMonochrome = GetMonochromeIndex();
for (int column = 0; column < 512; column += 16)
{
for (int y = 0; y < 512; y += 2)
{
unsigned val = (y >> 1);
for (int x = 0; x < 16; x += 2)
{
BYTE colorval = (val & 1) ? iMonochrome : BLACK;
val >>= 1;
SETSOURCEPIXEL(SRCOFFS_HIRES+column+x ,y ,colorval);
SETSOURCEPIXEL(SRCOFFS_HIRES+column+x+1,y ,colorval);
SETSOURCEPIXEL(SRCOFFS_HIRES+column+x ,y+1,colorval);
SETSOURCEPIXEL(SRCOFFS_HIRES+column+x+1,y+1,colorval);
}
}
}
}
//===========================================================================
void DrawMonoLoResSource () {
int iMonochrome = GetMonochromeIndex();
for (int color = 0; color < 16; color++)
for (int x = 0; x < 16; x++)
for (int y = 0; y < 16; y++) {
BYTE colorval = (color >> (x & 3) & 1) ? iMonochrome : BLACK;
SETSOURCEPIXEL(SRCOFFS_LORES+x,(color << 4)+y,colorval);
}
}
//===========================================================================
void DrawMonoTextSource (HDC hDstDC)
{
HDC hSrcDC = CreateCompatibleDC(hDstDC);
HBITMAP hBitmap = LoadBitmap(g_hInstance,TEXT("CHARSET40"));
HBRUSH hBrush;
switch (videotype)
{
case VT_MONO_AMBER: hBrush = CreateSolidBrush(RGB(0xFF,0x80,0x00)); break;
case VT_MONO_GREEN: hBrush = CreateSolidBrush(RGB(0x00,0xC0,0x00)); break;
case VT_MONO_WHITE: hBrush = CreateSolidBrush(RGB(0xFF,0xFF,0xFF)); break;
default : hBrush = CreateSolidBrush(monochrome); break;
}
SelectObject(hSrcDC,hBitmap);
SelectObject(hDstDC,hBrush);
// TODO: Update with APPLE_FONT_Y_ values
BitBlt(hDstDC,SRCOFFS_40COL,0,256,512,hSrcDC,0,0,MERGECOPY);
BitBlt(hDstDC,SRCOFFS_IIPLUS,0,256,256,hSrcDC,0,512,MERGECOPY);
StretchBlt(hDstDC,SRCOFFS_80COL,0,128,512,hSrcDC,0,0,256,512,MERGECOPY);
SelectObject(hDstDC,GetStockObject(NULL_BRUSH));
DeleteObject(hBrush);
DeleteDC(hSrcDC);
DeleteObject(hBitmap);
}
//===========================================================================
void DrawTextSource (HDC dc)
{
HDC memdc = CreateCompatibleDC(dc);
HBITMAP bitmap = LoadBitmap(g_hInstance,TEXT("CHARSET40"));
SelectObject(memdc,bitmap);
BitBlt(
dc // hdcDest
,SRCOFFS_40COL ,0 // nXDest, nYDest
,256 ,512 // nWidth, nHeight
,memdc // hdcSrc
,0 ,0 // nXSrc, nYSrc
,SRCCOPY ); // dwRop
// Chars for Apple ][
BitBlt(dc,SRCOFFS_IIPLUS,0,256,256,memdc,0,512,SRCCOPY);
// Chars for 80 col mode
StretchBlt(dc,SRCOFFS_80COL,0,128,512,memdc,0,0,256,512,SRCCOPY);
DeleteDC(memdc);
DeleteObject(bitmap);
}
//===========================================================================
void SetLastDrawnImage () {
memcpy(vidlastmem+0x400,g_pTextBank0,0x400);
if (SW_HIRES)
memcpy(vidlastmem+0x2000,g_pHiresBank0,0x2000);
if (SW_DHIRES && SW_HIRES)
memcpy(vidlastmem,g_pHiresBank1,0x2000);
else if (SW_80COL) // Don't test for !SW_HIRES, as some 80-col text routines have SW_HIRES set (Bug #8300)
memcpy(vidlastmem,g_pTextBank1,0x400);
int loop;
for (loop = 0; loop < 256; loop++)
*(memdirty+loop) &= ~2;
}
//===========================================================================
bool Update40ColCell (int x, int y, int xpixel, int ypixel, int offset)
{
BYTE ch = *(g_pTextBank0+offset);
bool bCharChanged = (ch != *(vidlastmem+offset+0x400) || redrawfull);
// FLASHing chars:
// - FLASHing if:Alt Char Set is OFF && 0x40<=char<=0x7F
// - The inverse of this char is located at: char+0x40
bool bCharFlashing = (g_nAltCharSetOffset == 0) && (ch >= 0x40) && (ch <= 0x7F);
if(bCharChanged || (bCharFlashing && g_bTextFlashFlag))
{
bool bInvert = bCharFlashing ? g_bTextFlashState : false;
CopySource(xpixel,ypixel,
APPLE_FONT_WIDTH, APPLE_FONT_HEIGHT,
(IS_APPLE2 ? SRCOFFS_IIPLUS : SRCOFFS_40COL) + ((ch & 0x0F) << 4),
(ch & 0xF0) + g_nAltCharSetOffset + (bInvert ? 0x40 : 0x00));
return true;
}
return false;
}
inline bool _Update80ColumnCell( BYTE c, const int xPixel, const int yPixel, bool bCharFlashing )
{
bool bInvert = bCharFlashing ? g_bTextFlashState : false;
CopySource(
xPixel, yPixel,
(APPLE_FONT_WIDTH / 2), APPLE_FONT_HEIGHT,
SRCOFFS_80COL + ((c & 15)<<3),
((c >>4) <<4) + g_nAltCharSetOffset + (bInvert ? 0x40 : 0x00));
return true;
}
//===========================================================================
bool Update80ColCell (int x, int y, int xpixel, int ypixel, int offset)
{
bool bDirty = false;
#if FLASH_80_COL
BYTE c1 = *(g_pTextBank1 + offset); // aux
BYTE c0 = *(g_pTextBank0 + offset); // main
bool bC1Changed = (c1 != *(vidlastmem + offset + 0) || redrawfull);
bool bC0Changed = (c0 != *(vidlastmem + offset + 0x400) || redrawfull);
bool bC1Flashing = (g_nAltCharSetOffset == 0) && (c1 >= 0x40) && (c1 <= 0x7F);
bool bC0Flashing = (g_nAltCharSetOffset == 0) && (c0 >= 0x40) && (c0 <= 0x7F);
if (bC1Changed || (bC1Flashing && g_bTextFlashFlag))
bDirty = _Update80ColumnCell( c1, xpixel, ypixel, bC1Flashing );
if (bC0Changed || (bC0Flashing && g_bTextFlashFlag))
bDirty |= _Update80ColumnCell( c0, xpixel + 7, ypixel, bC0Flashing );
#else
BYTE auxval = *(g_pTextBank1 + offset); // aux
BYTE mainval = *(g_pTextBank0 + offset); // main
if ((auxval != *(vidlastmem+offset)) ||
(mainval != *(vidlastmem+offset+0x400)) ||
redrawfull)
{
CopySource(xpixel,ypixel,
(APPLE_FONT_WIDTH / 2), APPLE_FONT_HEIGHT,
SRCOFFS_80COL + ((auxval & 15)<<3),
((auxval>>4)<<4) + g_nAltCharSetOffset);
CopySource(xpixel+7,ypixel,
(APPLE_FONT_WIDTH / 2), APPLE_FONT_HEIGHT,
SRCOFFS_80COL + ((mainval & 15)<<3),
((mainval>>4)<<4) + g_nAltCharSetOffset );
bDirty = true;
}
#endif
return bDirty;
}
//===========================================================================
bool UpdateDHiResCell (int x, int y, int xpixel, int ypixel, int offset)
{
bool bDirty = false;
int yoffset = 0;
while (yoffset < 0x2000) {
BYTE byteval1 = (x > 0) ? *(g_pHiresBank0+offset+yoffset-1) : 0;
BYTE byteval2 = *(g_pHiresBank1 +offset+yoffset);
BYTE byteval3 = *(g_pHiresBank0+offset+yoffset);
BYTE byteval4 = (x < 39) ? *(g_pHiresBank1 +offset+yoffset+1) : 0;
if ((byteval2 != *(vidlastmem+offset+yoffset)) ||
(byteval3 != *(vidlastmem+offset+yoffset+0x2000)) ||
((x > 0) && ((byteval1 & 0x70) != (*(vidlastmem+offset+yoffset+0x1FFF) & 0x70))) ||
((x < 39) && ((byteval4 & 0x07) != (*(vidlastmem+offset+yoffset+ 1) & 0x07))) ||
redrawfull) {
DWORD dwordval = (byteval1 & 0x70) | ((byteval2 & 0x7F) << 7) |
((byteval3 & 0x7F) << 14) | ((byteval4 & 0x07) << 21);
#define PIXEL 0
#define COLOR ((xpixel + PIXEL) & 3)
#define VALUE (dwordval >> (4 + PIXEL - COLOR))
CopySource(xpixel+PIXEL,ypixel+(yoffset >> 9),7,2,
SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR,LOBYTE(VALUE)<<1);
#undef PIXEL
#define PIXEL 7
CopySource(xpixel+PIXEL,ypixel+(yoffset >> 9),7,2,
SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR,LOBYTE(VALUE)<<1);
#undef PIXEL
#undef COLOR
#undef VALUE
bDirty = true;
}
yoffset += 0x400;
}
return bDirty;
}
//===========================================================================
BYTE MixColors(BYTE c1, BYTE c2) { // For tv emulation g_nAppMode
#define COMBINATION(c1,c2,ref1,ref2) (((c1)==(ref1)&&(c2)==(ref2)) || ((c1)==(ref2)&&(c2)==(ref1)))
if (c1 == c2)
return c1;
if (COMBINATION(c1,c2,HGR_BLUE,HGR_RED))
return HGR_GREY1;
else if (COMBINATION(c1,c2,HGR_GREEN,HGR_MAGENTA))
return HGR_GREY2;
else if (COMBINATION(c1,c2,HGR_RED,HGR_GREEN))
return HGR_YELLOW;
else if (COMBINATION(c1,c2,HGR_BLUE,HGR_GREEN))
return HGR_AQUA;
else if (COMBINATION(c1,c2,HGR_BLUE,HGR_MAGENTA))
return HGR_PURPLE;
else if (COMBINATION(c1,c2,HGR_RED,HGR_MAGENTA))
return HGR_PINK;
else
return MONOCHROME_CUSTOM; // visible failure indicator
#undef COMBINATION
}
//===========================================================================
void CreateColorMixMap() { // For tv emulation g_nAppMode
#define FROM_NEIGHBOUR 0x00
int t,m,b;
BYTE cTop, cMid, cBot;
WORD mixTop, mixBot;
for (t=0; t<6; t++)
for (m=0; m<6; m++)
for (b=0; b<6; b++) {
cTop = t | 0x10;
cMid = m | 0x10;
cBot = b | 0x10;
if (cMid < HGR_BLUE) {
mixTop = mixBot = cMid;
} else {
if (cTop < HGR_BLUE) {
mixTop = FROM_NEIGHBOUR;
} else {
mixTop = MixColors(cMid,cTop);
}
if (cBot < HGR_BLUE) {
mixBot = FROM_NEIGHBOUR;
} else {
mixBot = MixColors(cMid,cBot);
}
if (mixTop == FROM_NEIGHBOUR && mixBot != FROM_NEIGHBOUR) {
mixTop = mixBot;
} else if (mixBot == FROM_NEIGHBOUR && mixTop != FROM_NEIGHBOUR) {
mixBot = mixTop;
} else if (mixBot == FROM_NEIGHBOUR && mixTop == FROM_NEIGHBOUR) {
mixBot = mixTop = cMid;
}
}
colormixmap[t][m][b] = (mixTop << 8) | mixBot;
}
#undef FROM_NEIGHBOUR
}
//===========================================================================
void __stdcall MixColorsVertical(int matx, int maty) { // For tv emulation g_nAppMode
WORD twoHalfPixel;
int bot1idx, bot2idx;
if (SW_MIXED && maty > 159) {
if (maty < 161) {
bot1idx = hgrpixelmatrix[matx][maty+1] & 0x0F;
bot2idx = 0;
} else {
bot1idx = bot2idx = 0;
}
} else {
bot1idx = hgrpixelmatrix[matx][maty+1] & 0x0F;
bot2idx = hgrpixelmatrix[matx][maty+2] & 0x0F;
}
twoHalfPixel = colormixmap[hgrpixelmatrix[matx][maty-2] & 0x0F]
[hgrpixelmatrix[matx][maty-1] & 0x0F]
[hgrpixelmatrix[matx][maty ] & 0x0F];
colormixbuffer[0] = (twoHalfPixel & 0xFF00) >> 8;
colormixbuffer[1] = twoHalfPixel & 0x00FF;
twoHalfPixel = colormixmap[hgrpixelmatrix[matx][maty-1] & 0x0F]
[hgrpixelmatrix[matx][maty ] & 0x0F]
[bot1idx];
colormixbuffer[2] = (twoHalfPixel & 0xFF00) >> 8;
colormixbuffer[3] = twoHalfPixel & 0x00FF;
twoHalfPixel = colormixmap[hgrpixelmatrix[matx][maty ] & 0x0F]
[bot1idx]
[bot2idx];
colormixbuffer[4] = (twoHalfPixel & 0xFF00) >> 8;
colormixbuffer[5] = twoHalfPixel & 0x00FF;
}
//===========================================================================
void __stdcall CopyMixedSource (int x, int y, int sourcex, int sourcey) { // For tv emulation g_nAppMode
LPBYTE currsourceptr = g_aSourceStartofLine[sourcey]+sourcex;
LPBYTE currdestptr = frameoffsettable[y<<1] + (x<<1);
LPBYTE currptr;
int matx = x;
int maty = HGR_MATRIX_YOFFSET + y;
int count;
int bufxoffset;
int hgrlinesabove = (y > 0)? 1 : 0;
int hgrlinesbelow = SW_MIXED ? ((y < 159)? 1:0) : ((y < 191)? 1:0);
int i;
int istart = 2 - (hgrlinesabove << 1);
int iend = 3 + (hgrlinesbelow << 1);
// transfer 7 pixels (i.e. the visible part of an apple hgr-byte) from row to pixelmatrix
for (count = 0, bufxoffset = 0;
count < 7;
count++, bufxoffset += 2) {
hgrpixelmatrix[matx+count][maty] = *(currsourceptr+bufxoffset);
// color mixing between adjacent scanlines at current x position
MixColorsVertical(matx+count, maty);
// transfer up to 6 mixed (half-)pixels of current column to framebuffer
currptr = currdestptr+bufxoffset;
if (hgrlinesabove)
currptr += framebufferpitch << 1;
for (i = istart;
i <= iend;
currptr -= framebufferpitch, i++) {
*currptr = *(currptr+1) = colormixbuffer[i];
}
}
}
//===========================================================================
bool UpdateHiResCell (int x, int y, int xpixel, int ypixel, int offset)
{
bool bDirty = false;
int yoffset = 0;
while (yoffset < 0x2000) {
BYTE byteval1 = (x > 0) ? *(g_pHiresBank0+offset+yoffset-1) : 0;
BYTE byteval2 = *(g_pHiresBank0+offset+yoffset);
BYTE byteval3 = (x < 39) ? *(g_pHiresBank0+offset+yoffset+1) : 0;
if ((byteval2 != *(vidlastmem+offset+yoffset+0x2000)) ||
((x > 0) && ((byteval1 & 0x60) != (*(vidlastmem+offset+yoffset+0x1FFF) & 0x60))) ||
((x < 39) && ((byteval3 & 0x03) != (*(vidlastmem+offset+yoffset+0x2001) & 0x03))) ||
redrawfull) {
#define COLOFFS (((byteval1 & 0x60) << 2) | \
((byteval3 & 0x03) << 5))
if (videotype == VT_COLOR_TVEMU)
{
CopyMixedSource(xpixel >> 1, (ypixel+(yoffset >> 9)) >> 1,
SRCOFFS_HIRES+COLOFFS+((x & 1) << 4),(((int)byteval2) << 1));
}
else
{
CopySource(xpixel,ypixel+(yoffset >> 9),
14,2,
SRCOFFS_HIRES+COLOFFS+((x & 1) << 4),(((int)byteval2) << 1));
}
#undef COLOFFS
bDirty = true;
}
yoffset += 0x400;
}
return bDirty;
}
//===========================================================================
bool UpdateLoResCell (int x, int y, int xpixel, int ypixel, int offset)
{
BYTE val = *(g_pTextBank0+offset);
if ((val != *(vidlastmem+offset+0x400)) || redrawfull)
{
CopySource(xpixel,ypixel,
14,8,
SRCOFFS_LORES+((x & 1) << 1),((val & 0xF) << 4));
CopySource(xpixel,ypixel+8,
14,8,
SRCOFFS_LORES+((x & 1) << 1),(val & 0xF0));
return true;
}
return false;
}
//===========================================================================
bool UpdateDLoResCell (int x, int y, int xpixel, int ypixel, int offset)
{
BYTE auxval = *(g_pTextBank1 +offset);
BYTE mainval = *(g_pTextBank0+offset);
if ( (auxval != *(vidlastmem+offset)) ||
(mainval != *(vidlastmem+offset+0x400)) ||
redrawfull
)
{
CopySource( xpixel,ypixel,
7,8,
SRCOFFS_LORES+((x & 1) << 1),((auxval & 0xF) << 4));
CopySource( xpixel,ypixel+8,
7,8,
SRCOFFS_LORES+((x & 1) << 1),(auxval & 0xF0));
//
CopySource( xpixel+7,ypixel,
7,8,
SRCOFFS_LORES+((x & 1) << 1),((mainval & 0xF) << 4));
CopySource( xpixel+7,ypixel+8,
7,8,
SRCOFFS_LORES+((x & 1) << 1),(mainval & 0xF0));
return true;
}
return false;
}
//
// ----- ALL GLOBALLY ACCESSIBLE FUNCTIONS ARE BELOW THIS LINE -----
//
//===========================================================================
BOOL VideoApparentlyDirty ()
{
if (SW_MIXED || redrawfull)
return 1;
DWORD address = (SW_HIRES && !SW_TEXT) ? (0x20 << displaypage2) : (0x4 << displaypage2);
DWORD length = (SW_HIRES && !SW_TEXT) ? 0x20 : 0x4;
while (length--)
if (*(memdirty+(address++)) & 2)
return 1;
//
bool bCharFlashing = false;
// Scan visible text page for any flashing chars
if((SW_TEXT || SW_MIXED) && (g_nAltCharSetOffset == 0))
{
BYTE* pnMemText = MemGetMainPtr(0x400 << displaypage2);
// Scan 8 long-lines of 120 chars (at 128 char offsets):
// . Skip 8-char holes in TEXT
for(UINT y=0; y<8; y++)
{
for(UINT x=0; x<40*3; x++)
{
BYTE ch = pnMemText[y*128+x];
if((ch >= 0x40) && (ch <= 0x7F))
{
bCharFlashing = true;
break;
}
}
}
}
if(bCharFlashing)
return 1;
return 0;
}
//===========================================================================
void VideoBenchmark () {
Sleep(500);
// PREPARE TWO DIFFERENT FRAME BUFFERS, EACH OF WHICH HAVE HALF OF THE
// BYTES SET TO 0x14 AND THE OTHER HALF SET TO 0xAA
int loop;
LPDWORD mem32 = (LPDWORD)mem;
for (loop = 4096; loop < 6144; loop++)
*(mem32+loop) = ((loop & 1) ^ ((loop & 0x40) >> 6)) ? 0x14141414
: 0xAAAAAAAA;
for (loop = 6144; loop < 8192; loop++)
*(mem32+loop) = ((loop & 1) ^ ((loop & 0x40) >> 6)) ? 0xAAAAAAAA
: 0x14141414;
// SEE HOW MANY TEXT FRAMES PER SECOND WE CAN PRODUCE WITH NOTHING ELSE
// GOING ON, CHANGING HALF OF THE BYTES IN THE VIDEO BUFFER EACH FRAME TO
// SIMULATE THE ACTIVITY OF AN AVERAGE GAME
DWORD totaltextfps = 0;
vidmode = VF_TEXT;
FillMemory(mem+0x400,0x400,0x14);
VideoRedrawScreen();
DWORD milliseconds = GetTickCount();
while (GetTickCount() == milliseconds) ;
milliseconds = GetTickCount();
DWORD cycle = 0;
do {
if (cycle & 1)
FillMemory(mem+0x400,0x400,0x14);
else
CopyMemory(mem+0x400,mem+((cycle & 2) ? 0x4000 : 0x6000),0x400);
VideoRefreshScreen();
if (cycle++ >= 3)
cycle = 0;
totaltextfps++;
} while (GetTickCount() - milliseconds < 1000);
// SEE HOW MANY HIRES FRAMES PER SECOND WE CAN PRODUCE WITH NOTHING ELSE
// GOING ON, CHANGING HALF OF THE BYTES IN THE VIDEO BUFFER EACH FRAME TO
// SIMULATE THE ACTIVITY OF AN AVERAGE GAME
DWORD totalhiresfps = 0;
vidmode = VF_HIRES;
FillMemory(mem+0x2000,0x2000,0x14);
VideoRedrawScreen();
milliseconds = GetTickCount();
while (GetTickCount() == milliseconds) ;
milliseconds = GetTickCount();
cycle = 0;
do {
if (cycle & 1)
FillMemory(mem+0x2000,0x2000,0x14);
else
CopyMemory(mem+0x2000,mem+((cycle & 2) ? 0x4000 : 0x6000),0x2000);
VideoRefreshScreen();
if (cycle++ >= 3)
cycle = 0;
totalhiresfps++;
} while (GetTickCount() - milliseconds < 1000);
// DETERMINE HOW MANY 65C02 CLOCK CYCLES WE CAN EMULATE PER SECOND WITH
// NOTHING ELSE GOING ON
CpuSetupBenchmark();
DWORD totalmhz10 = 0;
milliseconds = GetTickCount();
while (GetTickCount() == milliseconds) ;
milliseconds = GetTickCount();
cycle = 0;
do {
CpuExecute(100000);
totalmhz10++;
} while (GetTickCount() - milliseconds < 1000);
// IF THE PROGRAM COUNTER IS NOT IN THE EXPECTED RANGE AT THE END OF THE
// CPU BENCHMARK, REPORT AN ERROR AND OPTIONALLY TRACK IT DOWN
if ((regs.pc < 0x300) || (regs.pc > 0x400))
if (MessageBox(g_hFrameWindow,
TEXT("The emulator has detected a problem while running ")
TEXT("the CPU benchmark. Would you like to gather more ")
TEXT("information?"),
TEXT("Benchmarks"),
MB_ICONQUESTION | MB_YESNO | MB_SETFOREGROUND) == IDYES) {
BOOL error = 0;
WORD lastpc = 0x300;
int loop = 0;
while ((loop < 10000) && !error) {
CpuSetupBenchmark();
CpuExecute(loop);
if ((regs.pc < 0x300) || (regs.pc > 0x400))
error = 1;
else {
lastpc = regs.pc;
++loop;
}
}
if (error) {
TCHAR outstr[256];
wsprintf(outstr,
TEXT("The emulator experienced an error %u clock cycles ")
TEXT("into the CPU benchmark. Prior to the error, the ")
TEXT("program counter was at $%04X. After the error, it ")
TEXT("had jumped to $%04X."),
(unsigned)loop,
(unsigned)lastpc,
(unsigned)regs.pc);
MessageBox(g_hFrameWindow,
outstr,
TEXT("Benchmarks"),
MB_ICONINFORMATION | MB_SETFOREGROUND);
}
else
MessageBox(g_hFrameWindow,
TEXT("The emulator was unable to locate the exact ")
TEXT("point of the error. This probably means that ")
TEXT("the problem is external to the emulator, ")
TEXT("happening asynchronously, such as a problem in ")
TEXT("a timer interrupt handler."),
TEXT("Benchmarks"),
MB_ICONINFORMATION | MB_SETFOREGROUND);
}
// DO A REALISTIC TEST OF HOW MANY FRAMES PER SECOND WE CAN PRODUCE
// WITH FULL EMULATION OF THE CPU, JOYSTICK, AND DISK HAPPENING AT
// THE SAME TIME
DWORD realisticfps = 0;
FillMemory(mem+0x2000,0x2000,0xAA);
VideoRedrawScreen();
milliseconds = GetTickCount();
while (GetTickCount() == milliseconds) ;
milliseconds = GetTickCount();
cycle = 0;
do {
if (realisticfps < 10) {
int cycles = 100000;
while (cycles > 0) {
DWORD executedcycles = CpuExecute(103);
cycles -= executedcycles;
DiskUpdatePosition(executedcycles);
JoyUpdatePosition();
VideoUpdateVbl(0);
}
}
if (cycle & 1)
FillMemory(mem+0x2000,0x2000,0xAA);
else
CopyMemory(mem+0x2000,mem+((cycle & 2) ? 0x4000 : 0x6000),0x2000);
VideoRefreshScreen();
if (cycle++ >= 3)
cycle = 0;
realisticfps++;
} while (GetTickCount() - milliseconds < 1000);
// DISPLAY THE RESULTS
VideoDisplayLogo();
TCHAR outstr[256];
wsprintf(outstr,
TEXT("Pure Video FPS:\t%u hires, %u text\n")
TEXT("Pure CPU MHz:\t%u.%u%s\n\n")
TEXT("EXPECTED AVERAGE VIDEO GAME\n")
TEXT("PERFORMANCE: %u FPS"),
(unsigned)totalhiresfps,
(unsigned)totaltextfps,
(unsigned)(totalmhz10/10),
(unsigned)(totalmhz10 % 10),
(LPCTSTR)(IS_APPLE2 ? TEXT(" (6502)") : TEXT("")),
(unsigned)realisticfps);
MessageBox(g_hFrameWindow,
outstr,
TEXT("Benchmarks"),
MB_ICONINFORMATION | MB_SETFOREGROUND);
}
//===========================================================================
BYTE __stdcall VideoCheckMode (WORD, WORD address, BYTE, BYTE, ULONG)
{
address &= 0xFF;
if (address == 0x7F)
return MemReadFloatingBus(SW_DHIRES != 0);
else {
BOOL result = 0;
switch (address) {
case 0x1A: result = SW_TEXT; break;
case 0x1B: result = SW_MIXED; break;
case 0x1D: result = SW_HIRES; break;
case 0x1E: result = g_nAltCharSetOffset; break;
case 0x1F: result = SW_80COL; break;
case 0x7F: result = SW_DHIRES; break;
}
return KeybGetKeycode() | (result ? 0x80 : 0);
}
}
//===========================================================================
void VideoCheckPage (BOOL force) {
if ((displaypage2 != (SW_PAGE2 != 0)) &&
(force || (emulmsec-lastpageflip > 500))) {
displaypage2 = (SW_PAGE2 != 0);
VideoRefreshScreen();
hasrefreshed = 1;
lastpageflip = emulmsec;
}
}
//===========================================================================
BYTE __stdcall VideoCheckVbl (WORD, WORD, BYTE, BYTE, ULONG)
{
/*
// Drol expects = 80
68DE A5 02 LDX #02
68E0 AD 50 C0 LDA TXTCLR
68E3 C9 80 CMP #80
68E5 D0 F7 BNE $68DE
6957 A5 02 LDX #02
6959 AD 50 C0 LDA TXTCLR
695C C9 80 CMP #80
695E D0 F7 BNE $68DE
69D3 A5 02 LDX #02
69D5 AD 50 C0 LDA TXTCLR
69D8 C9 80 CMP #80
69DA D0 F7 BNE $68DE
// Karateka expects < 80
07DE AD 19 C0 LDA RDVBLBAR
07E1 30 FB BMI $7DE
77A1 AD 19 C0 LDA RDVBLBAR
77A4 30 FB BMI $7DE
// Gumball expects non-zero low-nibble on VBL
BBB5 A5 60 LDA $60
BBB7 4D 50 C0 EOR TXTCLR
BBBA 85 60 STA $60
BBBC 29 0F AND #$0F
BBBE F0 F5 BEQ $BBB5
BBC0 C9 0F CMP #$0F
BBC2 F0 F1 BEQ $BBB5
// return MemReturnRandomData(dwVBlCounter <= nVBlStop_NTSC);
if (dwVBlCounter <= nVBlStop_NTSC)
return (BYTE)(dwVBlCounter & 0x7F); // 0x00;
else
return 0x80 | ((BYTE)(dwVBlCounter & 1));
*/
bool bVblBar;
VideoGetScannerAddress(&bVblBar);
BYTE r = KeybGetKeycode();
return (r & ~0x80) | ((bVblBar) ? 0x80 : 0);
}
//===========================================================================
void VideoChooseColor () {
CHOOSECOLOR cc;
ZeroMemory(&cc,sizeof(CHOOSECOLOR));
cc.lStructSize = sizeof(CHOOSECOLOR);
cc.hwndOwner = g_hFrameWindow;
cc.rgbResult = monochrome;
cc.lpCustColors = customcolors;
cc.Flags = CC_RGBINIT | CC_SOLIDCOLOR;
if (ChooseColor(&cc)) {
monochrome = cc.rgbResult;
VideoReinitialize();
if ((g_nAppMode != MODE_LOGO) && (g_nAppMode != MODE_DEBUG))
VideoRedrawScreen();
RegSaveValue(TEXT("Configuration"),TEXT("Monochrome Color"),1,monochrome);
}
}
//===========================================================================
void VideoDestroy () {
// DESTROY BUFFERS
VirtualFree(framebufferinfo,0,MEM_RELEASE);
VirtualFree(g_pSourceHeader ,0,MEM_RELEASE);
VirtualFree(vidlastmem ,0,MEM_RELEASE);
framebufferinfo = NULL;
g_pSourceHeader = NULL;
vidlastmem = NULL;
// DESTROY FRAME BUFFER
DeleteDC(g_hDeviceDC);
DeleteObject(g_hDeviceBitmap);
g_hDeviceDC = (HDC)0;
g_hDeviceBitmap = (HBITMAP)0;
// DESTROY SOURCE IMAGE
DeleteObject(g_hSourceBitmap);
g_hSourceBitmap = (HBITMAP)0;
// DESTROY LOGO
if (g_hLogoBitmap) {
DeleteObject(g_hLogoBitmap);
g_hLogoBitmap = (HBITMAP)0;
}
// DESTROY PALETTE
if (g_hPalette) {
DeleteObject(g_hPalette);
g_hPalette = (HPALETTE)0;
}
}
//===========================================================================
void VideoDrawLogoBitmap ( HDC hDstDC )
{
// HDC memdc = CreateCompatibleDC(framedc);
// SelectObject(memdc,g_hLogoBitmap);
// BitBlt(framedc,0,0,560,384,memdc,0,0,SRCCOPY);
// DeleteDC(memdc);
HDC hSrcDC = CreateCompatibleDC( hDstDC );
SelectObject( hSrcDC, g_hLogoBitmap );
BitBlt(
hDstDC, // hdcDest
0, 0, // nXDest, nYDest
560, 384, // nWidth, nHeight // HACK: HARD-CODED
hSrcDC, // hdcSrc
0, 0, // nXSrc, nYSrc
SRCCOPY // dwRop
);
DeleteObject( hSrcDC );
hSrcDC = NULL;
}
//===========================================================================
void VideoDisplayLogo () {
HDC hFrameDC = FrameGetDC();
// DRAW THE LOGO
HBRUSH brush = CreateSolidBrush(PALETTERGB(0x70,0x30,0xE0));
if (g_hLogoBitmap)
{
VideoDrawLogoBitmap( hFrameDC );
}
else
{
SelectObject(hFrameDC,brush);
SelectObject(hFrameDC,GetStockObject(NULL_PEN));
Rectangle(hFrameDC,0,0,560+1,384+1);
}
// DRAW THE VERSION NUMBER
HFONT font = CreateFont(-20,0,0,0,FW_NORMAL,0,0,0,ANSI_CHARSET,
OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,
VARIABLE_PITCH | 4 | FF_SWISS,
TEXT("Arial"));
SelectObject(hFrameDC,font);
SetTextAlign(hFrameDC,TA_RIGHT | TA_TOP);
SetBkMode(hFrameDC,TRANSPARENT);
#define VERSION_TXT "Version "
char* szVersion = new char[strlen(VERSION_TXT) + strlen(VERSIONSTRING) + 1];
strcpy(&szVersion[0], VERSION_TXT);
strcpy(&szVersion[strlen(VERSION_TXT)], VERSIONSTRING);
szVersion[strlen(szVersion)] = 0x00;
#define DRAWVERSION(x,y,c) SetTextColor(hFrameDC,c); \
TextOut(hFrameDC, \
540+x,358+y, \
szVersion, \
strlen(szVersion));
if (GetDeviceCaps(hFrameDC,PLANES) * GetDeviceCaps(hFrameDC,BITSPIXEL) <= 4) {
DRAWVERSION( 2, 2,RGB(0x00,0x00,0x00));
DRAWVERSION( 1, 1,RGB(0x00,0x00,0x00));
DRAWVERSION( 0, 0,RGB(0xFF,0x00,0xFF));
}
else {
DRAWVERSION( 1, 1,PALETTERGB(0x30,0x30,0x70));
DRAWVERSION(-1,-1,PALETTERGB(0xC0,0x70,0xE0));
DRAWVERSION( 0, 0,PALETTERGB(0x70,0x30,0xE0));
}
delete [] szVersion;
#undef DRAWVERSION
FrameReleaseDC();
DeleteObject(brush);
DeleteObject(font);
}
//===========================================================================
BOOL VideoHasRefreshed () {
BOOL result = hasrefreshed;
hasrefreshed = 0;
return result;
}
//===========================================================================
void VideoInitialize () {
// CREATE A BUFFER FOR AN IMAGE OF THE LAST DRAWN MEMORY
vidlastmem = (LPBYTE)VirtualAlloc(NULL,0x10000,MEM_COMMIT,PAGE_READWRITE);
ZeroMemory(vidlastmem,0x10000);
// LOAD THE LOGO
g_hLogoBitmap = (HBITMAP)LoadImage(g_hInstance, MAKEINTRESOURCE(IDB_APPLEWIN), IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
// CREATE A BITMAPINFO STRUCTURE FOR THE FRAME BUFFER
framebufferinfo = (LPBITMAPINFO)VirtualAlloc(NULL,
sizeof(BITMAPINFOHEADER)
+256*sizeof(RGBQUAD),
MEM_COMMIT,
PAGE_READWRITE);
ZeroMemory(framebufferinfo,sizeof(BITMAPINFOHEADER)+256*sizeof(RGBQUAD));
framebufferinfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
framebufferinfo->bmiHeader.biWidth = 560;
framebufferinfo->bmiHeader.biHeight = 384;
framebufferinfo->bmiHeader.biPlanes = 1;
framebufferinfo->bmiHeader.biBitCount = 8;
framebufferinfo->bmiHeader.biClrUsed = 256;
// CREATE A BITMAPINFO STRUCTURE FOR THE SOURCE IMAGE
g_pSourceHeader = (LPBITMAPINFO)VirtualAlloc(NULL,
sizeof(BITMAPINFOHEADER)
+256*sizeof(RGBQUAD),
MEM_COMMIT,
PAGE_READWRITE);
ZeroMemory(g_pSourceHeader,sizeof(BITMAPINFOHEADER));
g_pSourceHeader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
g_pSourceHeader->bmiHeader.biWidth = SRCOFFS_TOTAL;
g_pSourceHeader->bmiHeader.biHeight = 512;
g_pSourceHeader->bmiHeader.biPlanes = 1;
g_pSourceHeader->bmiHeader.biBitCount = 8;
g_pSourceHeader->bmiHeader.biClrUsed = 256;
// CREATE AN IDENTITY PALETTE AND FILL IN THE CORRESPONDING COLORS IN
// THE BITMAPINFO STRUCTURE
CreateIdentityPalette();
// PREFILL THE 16 CUSTOM COLORS AND MAKE SURE TO INCLUDE THE CURRENT MONOCHROME COLOR
for (int index = DARK_RED; index <= NUM_COLOR_PALETTE; index++)
customcolors[index-DARK_RED] = RGB(framebufferinfo->bmiColors[index].rgbRed,
framebufferinfo->bmiColors[index].rgbGreen,
framebufferinfo->bmiColors[index].rgbBlue);
// CREATE THE FRAME BUFFER DIB SECTION AND DEVICE CONTEXT,
// CREATE THE SOURCE IMAGE DIB SECTION AND DRAW INTO THE SOURCE BIT BUFFER
CreateDIBSections();
// RESET THE VIDEO MODE SWITCHES AND THE CHARACTER SET OFFSET
VideoResetState();
}
//===========================================================================
void VideoRealizePalette (HDC dc) {
if (g_hPalette) {
SelectPalette(dc,g_hPalette,0);
RealizePalette(dc);
}
}
//===========================================================================
void VideoRedrawScreen () {
redrawfull = 1;
VideoRefreshScreen();
}
//===========================================================================
void VideoRefreshScreen () {
LPBYTE addr = framebufferbits;
LONG pitch = 560;
HDC framedc = FrameGetVideoDC(&addr,&pitch);
CreateFrameOffsetTable(addr,pitch);
// CHECK EACH CELL FOR CHANGED BYTES. REDRAW PIXELS FOR THE CHANGED BYTES
// IN THE FRAME BUFFER. MARK CELLS IN WHICH REDRAWING HAS TAKEN PLACE AS
// DIRTY.
g_pHiresBank1 = MemGetAuxPtr (0x2000 << displaypage2);
g_pHiresBank0 = MemGetMainPtr(0x2000 << displaypage2);
g_pTextBank1 = MemGetAuxPtr (0x400 << displaypage2);
g_pTextBank0 = MemGetMainPtr(0x400 << displaypage2);
ZeroMemory(celldirty,40*32);
UpdateFunc_t update = SW_TEXT
? SW_80COL
? Update80ColCell
: Update40ColCell
: SW_HIRES
? (SW_DHIRES && SW_80COL)
? UpdateDHiResCell
: UpdateHiResCell
: (SW_DHIRES && SW_80COL)
? UpdateDLoResCell
: UpdateLoResCell;
BOOL anydirty = 0;
int y = 0;
int ypixel = 0;
while (y < 20) {
int offset = ((y & 7) << 7) + ((y >> 3) * 40);
int x = 0;
int xpixel = 0;
while (x < 40) {
anydirty |= celldirty[x][y] = update(x,y,xpixel,ypixel,offset+x);
++x;
xpixel += 14;
}
++y;
ypixel += 16;
}
if (SW_MIXED)
update = SW_80COL ? Update80ColCell
: Update40ColCell;
while (y < 24) {
int offset = ((y & 7) << 7) + ((y >> 3) * 40);
int x = 0;
int xpixel = 0;
while (x < 40) {
anydirty |= celldirty[x][y] = update(x,y,xpixel,ypixel,offset+x);
++x;
xpixel += 14;
}
++y;
ypixel += 16;
}
// Clear this flag after TEXT screen has been updated
g_bTextFlashFlag = false;
#if 0
// New simpified code:
// . Oliver Schmidt gets a flickering mouse cursor with this code
if (framedc && anydirty)
{
BitBlt(framedc,0,0,560,384,g_hDeviceDC,0,0,SRCCOPY);
GdiFlush();
}
#else
// Original code:
if (!framedc || !anydirty)
{
FrameReleaseVideoDC();
SetLastDrawnImage();
redrawfull = 0;
return;
}
// COPY DIRTY CELLS FROM THE DEVICE DEPENDENT BITMAP ONTO THE SCREEN
// IN LONG HORIZONTAL RECTANGLES
BOOL remainingdirty = 0;
y = 0;
ypixel = 0;
while (y < 24) {
int start = -1;
int startx = 0;
int x = 0;
int xpixel = 0;
while (x < 40) {
if ((x == 39) && celldirty[x][y])
if (start >= 0) {
xpixel += 14;
celldirty[x][y] = 0;
}
else
remainingdirty = 1;
if ((start >= 0) && !celldirty[x][y]) {
if ((x - startx > 1) || ((x == 39) && (xpixel == 560))) {
int height = 1;
while ((y+height < 24)
&& celldirty[startx][y+height]
&& celldirty[x-1][y+height]
&& celldirty[(startx+x-1) >> 1][y+height])
height++;
BitBlt(framedc,start,ypixel,xpixel-start,height << 4,
g_hDeviceDC,start,ypixel,SRCCOPY);
while (height--) {
int loop = startx;
while (loop < x+(xpixel == 560))
celldirty[loop++][y+height] = 0;
}
start = -1;
}
else
remainingdirty = 1;
start = -1;
}
else if ((start == -1) && celldirty[x][y] && (x < 39)) {
start = xpixel;
startx = x;
}
x++;
xpixel += 14;
}
y++;
ypixel += 16;
}
// COPY ANY REMAINING DIRTY CELLS FROM THE DEVICE DEPENDENT BITMAP
// ONTO THE SCREEN IN VERTICAL RECTANGLES
if (remainingdirty) {
int x = 0;
int xpixel = 0;
while (x < 40) {
int start = -1;
int y = 0;
int ypixel = 0;
while (y < 24) {
if ((y == 23) && celldirty[x][y]) {
if (start == -1)
start = ypixel;
ypixel += 16;
celldirty[x][y] = 0;
}
if ((start >= 0) && !celldirty[x][y]) {
BitBlt(framedc,xpixel,start,14,ypixel-start,
g_hDeviceDC,xpixel,start,SRCCOPY);
start = -1;
}
else if ((start == -1) && celldirty[x][y])
start = ypixel;
y++;
ypixel += 16;
}
x++;
xpixel += 14;
}
}
GdiFlush();
#endif
FrameReleaseVideoDC();
SetLastDrawnImage();
redrawfull = 0;
}
//===========================================================================
void VideoReinitialize () {
CreateIdentityPalette();
CreateDIBSections();
}
//===========================================================================
void VideoResetState () {
g_nAltCharSetOffset = 0;
displaypage2 = 0;
vidmode = VF_TEXT;
redrawfull = 1;
}
//===========================================================================
BYTE __stdcall VideoSetMode (WORD, WORD address, BYTE write, BYTE, ULONG)
{
address &= 0xFF;
DWORD oldpage2 = SW_PAGE2;
int oldvalue = g_nAltCharSetOffset+(int)(vidmode & ~(VF_MASK2 | VF_PAGE2));
switch (address) {
case 0x00: vidmode &= ~VF_MASK2; break;
case 0x01: vidmode |= VF_MASK2; break;
case 0x0C: if (!IS_APPLE2) vidmode &= ~VF_80COL; break;
case 0x0D: if (!IS_APPLE2) vidmode |= VF_80COL; break;
case 0x0E: if (!IS_APPLE2) g_nAltCharSetOffset = 0; break; // Alternate char set off
case 0x0F: if (!IS_APPLE2) g_nAltCharSetOffset = 256; break; // Alternate char set on
case 0x50: vidmode &= ~VF_TEXT; break;
case 0x51: vidmode |= VF_TEXT; break;
case 0x52: vidmode &= ~VF_MIXED; break;
case 0x53: vidmode |= VF_MIXED; break;
case 0x54: vidmode &= ~VF_PAGE2; break;
case 0x55: vidmode |= VF_PAGE2; break;
case 0x56: vidmode &= ~VF_HIRES; break;
case 0x57: vidmode |= VF_HIRES; break;
case 0x5E: if (!IS_APPLE2) vidmode |= VF_DHIRES; break;
case 0x5F: if (!IS_APPLE2) vidmode &= ~VF_DHIRES; break;
}
if (SW_MASK2)
vidmode &= ~VF_PAGE2;
if (oldvalue != g_nAltCharSetOffset+(int)(vidmode & ~(VF_MASK2 | VF_PAGE2))) {
graphicsmode = !SW_TEXT;
redrawfull = 1;
}
if (g_bFullSpeed && oldpage2 && !SW_PAGE2) {
static DWORD lasttime = 0;
DWORD currtime = GetTickCount();
if (currtime-lasttime >= 20)
lasttime = currtime;
else
oldpage2 = SW_PAGE2;
}
if (oldpage2 != SW_PAGE2) {
static DWORD lastrefresh = 0;
if ((displaypage2 && !SW_PAGE2) || (!behind)) {
displaypage2 = (SW_PAGE2 != 0);
if (!redrawfull) {
VideoRefreshScreen();
hasrefreshed = 1;
lastrefresh = emulmsec;
}
}
else if ((!SW_PAGE2) && (!redrawfull) && (emulmsec-lastrefresh >= 20)) {
displaypage2 = 0;
VideoRefreshScreen();
hasrefreshed = 1;
lastrefresh = emulmsec;
}
lastpageflip = emulmsec;
}
return MemReadFloatingBus();
}
//===========================================================================
void VideoUpdateVbl (DWORD dwCyclesThisFrame)
{
dwVBlCounter = (DWORD) ((double)dwCyclesThisFrame / (double)uCyclesPerLine);
}
//===========================================================================
// Called at 60Hz (every 16.666ms)
void VideoUpdateFlash()
{
static UINT nTextFlashCnt = 0;
nTextFlashCnt++;
if(nTextFlashCnt == 60/6) // Flash rate = 6Hz (every 166ms)
{
nTextFlashCnt = 0;
g_bTextFlashState = !g_bTextFlashState;
// Redraw any FLASHing chars if any text showing. NB. No FLASH g_nAppMode for 80 cols
if ((SW_TEXT || SW_MIXED) ) // && !SW_80COL) // FIX: FLASH 80-Column
g_bTextFlashFlag = true;
}
}
//===========================================================================
bool VideoGetSW80COL()
{
return SW_80COL ? true : false;
}
//===========================================================================
DWORD VideoGetSnapshot(SS_IO_Video* pSS)
{
pSS->bAltCharSet = !(g_nAltCharSetOffset == 0);
pSS->dwVidMode = vidmode;
return 0;
}
//===========================================================================
DWORD VideoSetSnapshot(SS_IO_Video* pSS)
{
g_nAltCharSetOffset = !pSS->bAltCharSet ? 0 : 256;
vidmode = pSS->dwVidMode;
//
graphicsmode = !SW_TEXT;
displaypage2 = (SW_PAGE2 != 0);
return 0;
}
//===========================================================================
WORD VideoGetScannerAddress(bool* pbVblBar_OUT)
{
// get video scanner position
//
int nCycles = CpuGetCyclesThisFrame();
// machine state switches
//
int nHires = (SW_HIRES) ? 1 : 0;
int nPage2 = (SW_PAGE2) ? 1 : 0;
int n80Store = (MemGet80Store()) ? 1 : 0;
// calculate video parameters according to display standard
//
int nScanLines = bVideoScannerNTSC ? kNTSCScanLines : kPALScanLines;
int nVSyncLine = bVideoScannerNTSC ? kNTSCVSyncLine : kPALVSyncLine;
int nScanCycles = nScanLines * kHClocks;
// calculate horizontal scanning state
//
int nHClock = (nCycles + kHPEClock) % kHClocks; // which horizontal scanning clock
int nHState = kHClock0State + nHClock; // H state bits
if (nHClock >= kHPresetClock) // check for horizontal preset
{
nHState -= 1; // correct for state preset (two 0 states)
}
int h_0 = (nHState >> 0) & 1; // get horizontal state bits
int h_1 = (nHState >> 1) & 1;
int h_2 = (nHState >> 2) & 1;
int h_3 = (nHState >> 3) & 1;
int h_4 = (nHState >> 4) & 1;
int h_5 = (nHState >> 5) & 1;
// calculate vertical scanning state
//
int nVLine = nCycles / kHClocks; // which vertical scanning line
int nVState = kVLine0State + nVLine; // V state bits
if ((nVLine >= kVPresetLine)) // check for previous vertical state preset
{
nVState -= nScanLines; // compensate for preset
}
int v_A = (nVState >> 0) & 1; // get vertical state bits
int v_B = (nVState >> 1) & 1;
int v_C = (nVState >> 2) & 1;
int v_0 = (nVState >> 3) & 1;
int v_1 = (nVState >> 4) & 1;
int v_2 = (nVState >> 5) & 1;
int v_3 = (nVState >> 6) & 1;
int v_4 = (nVState >> 7) & 1;
int v_5 = (nVState >> 8) & 1;
// calculate scanning memory address
//
if (SW_HIRES && SW_MIXED && (v_4 & v_2))
{
nHires = 0; // (address is in text memory)
}
int nAddend0 = 0x68; // 1 1 0 1
int nAddend1 = (h_5 << 5) | (h_4 << 4) | (h_3 << 3);
int nAddend2 = (v_4 << 6) | (v_3 << 5) | (v_4 << 4) | (v_3 << 3);
int nSum = (nAddend0 + nAddend1 + nAddend2) & (0x0F << 3);
int nAddress = 0;
nAddress |= h_0 << 0; // a0
nAddress |= h_1 << 1; // a1
nAddress |= h_2 << 2; // a2
nAddress |= nSum; // a3 - aa6
nAddress |= v_0 << 7; // a7
nAddress |= v_1 << 8; // a8
nAddress |= v_2 << 9; // a9
nAddress |= ((nHires) ? v_A : (1 ^ (nPage2 & (1 ^ n80Store)))) << 10; // a10
nAddress |= ((nHires) ? v_B : (nPage2 & (1 ^ n80Store))) << 11; // a11
if (nHires) // hires?
{
// Y: insert hires only address bits
//
nAddress |= v_C << 12; // a12
nAddress |= (1 ^ (nPage2 & (1 ^ n80Store))) << 13; // a13
nAddress |= (nPage2 & (1 ^ n80Store)) << 14; // a14
}
else
{
// N: text, so no higher address bits unless Apple ][, not Apple //e
//
if ((IS_APPLE2) && // Apple ][?
(kHPEClock <= nHClock) && // Y: HBL?
(nHClock <= (kHClocks - 1)))
{
nAddress |= 1 << 12; // Y: a12 (add $1000 to address!)
}
}
// update VBL' state
//
if (pbVblBar_OUT != NULL)
{
if (v_4 & v_3) // VBL?
{
*pbVblBar_OUT = false; // Y: VBL' is false
}
else
{
*pbVblBar_OUT = true; // N: VBL' is true
}
}
return static_cast<WORD>(nAddress);
}
//===========================================================================
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