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linapple-pie
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linapple-pie/src/Video.cpp

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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
*/
/* Adaptation for SDL and POSIX (l) by beom beotiger, Nov-Dec 2007 */
#include "stdafx.h"
#include "wwrapper.h"
#include <SDL_image.h>
#include "splash.xpm"
#include "charset40.xpm"
//#include "stretch.c" // for SDL_SoftStretch thanx to Sam Lantinga and Tomasz Cejner
//#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 RGB(r,g,b) ((COLORREF)(((BYTE)(r)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(b))<<16)))
//#define RGB(r,g,b) SDL_MapRGB(g_hSourceBitmap->format, r, g, b)
#define GetRValue(rgb) ((BYTE)(rgb))
#define GetGValue(rgb) ((BYTE)(((WORD)(rgb)) >> 8))
#define GetBValue(rgb) ((BYTE)((rgb)>>16))
#define FLASH_80_COL 1
#define HALF_SHIFT_DITHER 0
// STANDARD /*WINDOWS*/ LINUX 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
};
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);
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,r1,g1,b1) framebufferinfo[i].r = r1; \
framebufferinfo[i].g = g1; \
framebufferinfo[i].b = b1;
#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
SDL_Surface *g_hDeviceBitmap;
//static HBITMAP g_hDeviceBitmap;
//static HDC g_hDeviceDC;
static LPBYTE framebufferbits;
SDL_Color framebufferinfo[256];
const int MAX_FRAME_Y = 384; // 192 scan lines * 2x zoom = 384
static LPBYTE frameoffsettable[384];
static LPBYTE g_pHiresBank1;
static LPBYTE g_pHiresBank0;
SDL_Surface *g_hLogoBitmap = NULL;
SDL_Surface *charset40 = NULL; // Apple charset40 bitmap
SDL_Surface *g_hStatusSurface = NULL; // status panel
int g_iStatusCycle = 0; // cycler for status panel showing
//static HPALETTE g_hPalette;
SDL_Surface *g_origscreen = NULL;
SDL_Surface *g_hSourceBitmap = NULL;
//static HBITMAP g_hSourceBitmap;
static LPBYTE g_pSourcePixels;
SDL_Color g_pSourceHeader[256];
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/*int*/ framebufferpitch = 0;
BOOL graphicsmode = 0;
static BOOL hasrefreshed = 0;
static DWORD lastpageflip = 0;
COLORREF monochrome = RGB(0xC0,0xC0,0xC0);
//static BOOL rebuiltsource = 0; --?????? not used?
static BOOL redrawfull = 1;
static DWORD dwVBlCounter = 0;
static LPBYTE vidlastmem = NULL;
static DWORD vidmode = VF_TEXT;
DWORD videotype = VT_COLOR_STANDARD;
static bool g_bTextFlashState = false;
static bool g_bTextFlashFlag = false;
static bool bVideoScannerNTSC = true; // NTSC video scanning (or PAL)
BOOL g_ShowLeds = 1; // show drive leds by default
//-------------------------------------
// 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 (SDL_Surface * dc); // yes, we have just SDL_Surface either for DeviceContext, or bitmap
void DrawTextSource (SDL_Surface * 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; // we are going top to bottom, as all normal people do! ^_^ (bb)
currsourceptr += SRCOFFS_TOTAL;
}
}
//===========================================================================
void CreateFrameOffsetTable (LPBYTE addr, LONG/*int*/ pitch) {
// as I could take it's just needed for windzooeee DD while in FullScreen mode.
// Left for compatiblity purposes. -- bb.
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 * loop; //(383-loop);
}
//===========================================================================
void CreateIdentityPalette () {
// if (g_hPalette)
// DeleteObject(g_hPalette);
ZeroMemory(framebufferinfo, 256 * sizeof(SDL_Color));// must be cleared???
// 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
, GetBValue(monochrome)
, GetGValue(monochrome)
, GetRValue(monochrome) ); // chngrd B<->R, why? By me. --bb ^_^
SETFRAMECOLOR( MONOCHROME_AMBER, 0xFF,0x80,0x00);
SETFRAMECOLOR( MONOCHROME_GREEN, 0x00,0xC0,0x00);
SETFRAMECOLOR( MONOCHROME_WHITE, 0xFF,0xFF,0xFF);
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,framebufferinfo, 256 * sizeof(SDL_Color));
// 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)
SDL_FreeSurface(g_hDeviceBitmap);
g_hDeviceBitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, 560, 384, 8, 0, 0, 0, 0);
g_origscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, g_ScreenWidth, g_ScreenHeight, 8, 0, 0, 0, 0);
if(g_hDeviceBitmap == NULL) fprintf(stderr,"g_hDeviceBitmap was not created!\n");
//CreateDIBSection(dc,framebufferinfo,DIB_RGB_COLORS,
// (LPVOID *)&framebufferbits,0,0);
framebufferbits = (LPBYTE)g_hDeviceBitmap->pixels;
int hcl = SDL_SetColors(g_hDeviceBitmap, g_pSourceHeader, 0, 256);
// printf("SetColors(g_hDeviceBitmap)=%d\n",hcl);
hcl = SDL_SetColors(g_origscreen, g_pSourceHeader, 0, 256);
// printf("SetColors(g_origscreen)=%d\n",hcl);
g_hStatusSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, STATUS_PANEL_W, STATUS_PANEL_H, SCREEN_BPP, 0, 0, 0, 0);
SDL_SetColors(g_hStatusSurface, screen->format->palette->colors, 0, 256);
/* Create status panel background */
SDL_Rect srect;
Uint32 mybluez = SDL_MapRGB(screen->format, 10, 10, 255); // bluez color, know that?
Uint32 myyell = SDL_MapRGB(screen->format, 255, 255, 0); // yellow color?
srect.x = srect.y = 0;
srect.w = STATUS_PANEL_W;
srect.h = STATUS_PANEL_H;
SDL_FillRect(g_hStatusSurface, &srect, mybluez); // fill status panel
rectangle(g_hStatusSurface, 0, 0, STATUS_PANEL_W - 1, STATUS_PANEL_H - 1, myyell);
rectangle(g_hStatusSurface, 2, 2, STATUS_PANEL_W - 5, STATUS_PANEL_H - 5, myyell);
if(font_sfc == NULL) fonts_initialization();
if(font_sfc != NULL) {
font_print(7, 6, "FDD1", g_hStatusSurface, 1.3, 1.5); // show signs
font_print(40, 6, "FDD2", g_hStatusSurface, 1.3, 1.5);
font_print(74, 6, "HDD", g_hStatusSurface, 1.3, 1.5);
}
// CREATE THE SOURCE IMAGE DIB SECTION
// HDC sourcedc = CreateCompatibleDC(dc);
// ReleaseDC(window,dc);
if (g_hSourceBitmap)
SDL_FreeSurface(g_hSourceBitmap);
g_hSourceBitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, SRCOFFS_TOTAL, MAX_SOURCE_Y, 8, 0, 0, 0, 0);
if(g_hSourceBitmap == NULL) fprintf(stderr,"g_hSourceBitmap was not created!\n");
g_pSourcePixels = (LPBYTE)g_hSourceBitmap->pixels;
hcl = SDL_SetColors(g_hSourceBitmap, framebufferinfo, 0, 256);
// printf("SetColors(g_hSourceBitmap)=%d\n",hcl);
//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 * y; //((MAX_SOURCE_Y-1) - y);
// before direct access to surface pixels we MUST? lock it (surface)
int locked = 0;
// DRAW THE SOURCE IMAGE INTO THE SOURCE BIT BUFFER
ZeroMemory(g_pSourcePixels,SRCOFFS_TOTAL * /*512*/ MAX_SOURCE_Y);// be consistent, please,Thom! (bb) ^_^ ku
if ((videotype != VT_MONO_CUSTOM) &&
(videotype != VT_MONO_AMBER ) &&
(videotype != VT_MONO_GREEN ) &&
(videotype != VT_MONO_WHITE ))
{
DrawTextSource(g_hSourceBitmap);
if ( SDL_MUSTLOCK(g_hSourceBitmap) ) {
SDL_LockSurface(g_hSourceBitmap);
locked = 1; // the source bitmap is locked
}
DrawLoResSource();
if (videotype == VT_COLOR_HALF_SHIFT_DIM)
DrawHiResSourceHalfShiftDim();
else
DrawHiResSource();
DrawDHiResSource();
}
else
{
DrawMonoTextSource(g_hSourceBitmap);
if ( SDL_MUSTLOCK(g_hSourceBitmap) ) {
SDL_LockSurface(g_hSourceBitmap);
locked = 1; // the source bitmap is locked
}
DrawMonoLoResSource();
DrawMonoHiResSource();
DrawMonoDHiResSource();
}
if(locked) SDL_UnlockSurface(g_hSourceBitmap);
// 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 (SDL_Surface * hDstDC)
{
// HDC hSrcDC = CreateCompatibleDC(hDstDC);
// HBITMAP hBitmap = LoadBitmap(g_hInstance,TEXT("CHARSET40"));
if(charset40 == NULL) return;
Uint8 hBrush;
switch (videotype)
{
case VT_MONO_AMBER: hBrush = MONOCHROME_AMBER/*CreateSolidBrush(RGB(0xFF,0x80,0x00))*/; break;
case VT_MONO_GREEN: hBrush = MONOCHROME_GREEN/*CreateSolidBrush(RGB(0x00,0xC0,0x00))*/; break;
case VT_MONO_WHITE: hBrush = MONOCHROME_WHITE/*CreateSolidBrush(RGB(0xFF,0xFF,0xFF))*/; break;
default : hBrush = MONOCHROME_CUSTOM/*CreateSolidBrush(monochrome)*/; break;
}
// SelectObject(hSrcDC,hBitmap);
// SelectObject(hDstDC,hBrush);
SDL_Rect srcrect, dstrect;
dstrect.x = SRCOFFS_40COL;
dstrect.y = 0;
dstrect.w = 256;
dstrect.h = 512;
srcrect.x = 0;
srcrect.y = 0;
srcrect.w = 256;
srcrect.h = 512;
// TODO: Update with APPLE_FONT_Y_ values
// BitBlt(hDstDC,SRCOFFS_40COL,0,256,512,hSrcDC,0,0,MERGECOPY);
SDL_SoftStretchMono8(charset40, &srcrect, hDstDC, &dstrect, hBrush);
dstrect.x = SRCOFFS_IIPLUS;
dstrect.y = 0;
dstrect.w = 256;
dstrect.h = 256;
srcrect.x = 0;
srcrect.y = 512; // won't work?
srcrect.w = 256;
srcrect.h = 256;
SDL_SoftStretchMono8(charset40, &srcrect, hDstDC, &dstrect, hBrush);
// BitBlt(hDstDC,SRCOFFS_IIPLUS,0,256,256,hSrcDC,0,512,MERGECOPY);
dstrect.x = SRCOFFS_80COL;
dstrect.y = 0;
dstrect.w = 128;
dstrect.h = 512;
srcrect.x = srcrect.y = 0;
srcrect.w = 256;
srcrect.h = 512;
SDL_SoftStretchMono8(charset40, &srcrect, hDstDC, &dstrect, hBrush);
// 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 (SDL_Surface * dc)
{
// HDC memdc = CreateCompatibleDC(dc);
// HBITMAP bitmap = LoadBitmap(g_hInstance,TEXT("CHARSET40"));
// SelectObject(memdc,bitmap);
if(charset40 == NULL) return;
SDL_Rect srcrect, dstrect;
dstrect.x = SRCOFFS_40COL;
dstrect.y = 0;
dstrect.w = srcrect.w = 256;
dstrect.h = srcrect.h = 512;
srcrect.x = 0;
srcrect.y = 0;
SDL_SoftStretch(charset40, &srcrect, dc, &dstrect);
// BitBlt(
// dc // hdcDest
// ,SRCOFFS_40COL ,0 // nXDest, nYDest
// ,256 ,512 // nWidth, nHeight
// ,memdc // hdcSrc
// ,0 ,0 // nXSrc, nYSrc
// ,SRCCOPY ); // dwRop
// Chars for Apple ][
dstrect.x = SRCOFFS_IIPLUS;
dstrect.y = 0;
dstrect.w = srcrect.w = 256;
dstrect.h = srcrect.h = 256;
srcrect.x = 0;
srcrect.y = 512;
SDL_SoftStretch(charset40, &srcrect, dc, &dstrect);
// BitBlt(dc,SRCOFFS_IIPLUS,0,256,256,memdc,0,512,SRCCOPY);
// Chars for 80 col mode
dstrect.x = SRCOFFS_80COL;
dstrect.y = 0;
dstrect.w = 128;
dstrect.h = 512;
srcrect.x = srcrect.y = 0;
srcrect.w = 256;
srcrect.h = 512;
SDL_SoftStretch(charset40, &srcrect, dc, &dstrect);
// 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; // we just should change sign of op: '-' instead of '+'
for (i = istart;
i <= iend;
currptr += framebufferpitch, i++) { // and vice versa
*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*/SDL_Delay(1500); // wait for 1.5 sec before running benchmark
// 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) */
{
printf("The emulator has detected a problem while running the CPU benchmark.\n");
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);*/
printf("The emulator experienced an error %u clock cycles into the CPU benchmark.\n",(unsigned)loop);
printf("Prior to the error, the program counter was at $%04X.\n", (unsigned)lastpc);
printf(" After the error, it had jumped to $%04X.\n", (unsigned)regs.pc);
}
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);*/
printf("The emulator was unable to locate the exact point of the error.\n");
printf("This probably means that the problem is external to the emulator, happening asynchronously,\n");
printf("such as a problem in a timer interrupt handler.\n");
}
}
// 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);*/
printf("Pure Video FPS:\t%u hires, %u text\n", (unsigned)totalhiresfps, (unsigned)totaltextfps);
printf("Pure CPU MHz:\t%u.%u%s\n\n", (unsigned)(totalmhz10 / 10), (unsigned)(totalmhz10 % 10),
(LPCTSTR)(IS_APPLE2 ? TEXT(" (6502)") : TEXT("")));
printf("EXPECTED AVERAGE VIDEO GAME PERFORMANCE:\t%u FPS\n\n", (unsigned)realisticfps);
/*Sleep*/SDL_Delay(1500);
}// VideoBenchmark()
//===========================================================================
BYTE /*__stdcall*/ VideoCheckMode (WORD, WORD address, BYTE, BYTE, ULONG nCyclesLeft)
{
address &= 0xFF;
if (address == 0x7F)
return MemReadFloatingBus(SW_DHIRES != 0, nCyclesLeft);
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 nCyclesLeft)
{
/*
// 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, nCyclesLeft);
BYTE r = KeybGetKeycode();
return (r & ~0x80) | ((bVblBar) ? 0x80 : 0);
}
//===========================================================================
void VideoChooseColor () { // will implement later. May be...???? ^_^
// 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 () {
// Just free our SDL surfaces and free vidlastmem
// 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);
if(g_hDeviceBitmap) SDL_FreeSurface(g_hDeviceBitmap);
g_hDeviceBitmap = NULL;
if(g_origscreen) SDL_FreeSurface(g_origscreen);
g_origscreen = NULL;
if(g_hStatusSurface) SDL_FreeSurface(g_hStatusSurface);
g_hStatusSurface = NULL;
// g_hDeviceDC = (HDC)0;
// g_hDeviceBitmap = (HBITMAP)0;
// DESTROY SOURCE IMAGE
if(g_hSourceBitmap) SDL_FreeSurface(g_hSourceBitmap);
g_hSourceBitmap = NULL;
// g_hSourceBitmap = (HBITMAP)0;
// DESTROY LOGO
if (g_hLogoBitmap) SDL_FreeSurface(g_hLogoBitmap);
g_hLogoBitmap = NULL;
// g_hLogoBitmap = (HBITMAP)0;
if(charset40) SDL_FreeSurface(charset40);
charset40 = NULL;
// 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 () {
SDL_Rect drect,srect;
if(!g_hLogoBitmap) return; // nothing to display?
if(screen->format->palette && g_hLogoBitmap->format->palette)
SDL_SetColors(screen, g_hLogoBitmap->format->palette->colors,
0, g_hLogoBitmap->format->palette->ncolors);
drect.x = drect.y = srect.x = srect.y = 0;
drect.w = screen->w;
drect.h = screen->h;
srect.w = g_hLogoBitmap->w;
srect.h = g_hLogoBitmap->h;
// SDL_BlitSurface(g_hLogoBitmap, NULL, screen, NULL);
SDL_SoftStretch(g_hLogoBitmap,&srect,screen,&drect);
SDL_SoftStretch(g_hLogoBitmap,&srect,g_origscreen,&drect);
SDL_Flip(screen);
// 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 () {
SDL_Surface * tmp_surface;
// 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 splash screen
tmp_surface = IMG_ReadXPMFromArray (splash_xpm);
g_hLogoBitmap = SDL_DisplayFormat(tmp_surface);
SDL_FreeSurface(tmp_surface);
// LOAD APPLE CHARSET40
tmp_surface = IMG_ReadXPMFromArray (charset40_xpm);
charset40 = SDL_DisplayFormat(tmp_surface);
SDL_FreeSurface(tmp_surface);
// 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[index].r,
framebufferinfo[index].g,
framebufferinfo[index].b);
// bmiColors
// 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/*int*/ pitch = 560; // pitch stands for pixels in a row, if one pixel stands for one byte (560 in our case)
// I could take pitch such: LONG pitch = screen->pitch; . May be it would be better, what'd you think? --bb
// HDC framedc = FrameGetVideoDC(&addr,&pitch);
CreateFrameOffsetTable(addr,pitch);
int src_locked = 0;
if ( SDL_MUSTLOCK(g_hSourceBitmap) ) {
SDL_LockSurface(g_hSourceBitmap);
src_locked = 1; // the source bitmap is locked
}
int frm_locked = 0;
if ( SDL_MUSTLOCK(g_hDeviceBitmap) ) {
SDL_LockSurface(g_hDeviceBitmap);
frm_locked = 1; // the frame bitmap is locked
}
// 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;
}
if(frm_locked) SDL_UnlockSurface(g_hDeviceBitmap);
if(src_locked) SDL_UnlockSurface(g_hSourceBitmap);
// Clear this flag after TEXT screen has been updated
g_bTextFlashFlag = false;
SDL_Rect srect;
srect.x = screen->w - STATUS_PANEL_W - 5;
srect.y = screen->h - STATUS_PANEL_H - 5;
int bStatusShow = g_iStatusCycle;
if(g_iStatusCycle > 0) {
// double led_fades[SHOW_CYCLES + 1] = {0.20,0.30,0.40,0.50,0.60,0.70,0.80,0.85,0.88,0.92,0.95,0.94,0.96,0.97,0.98,0.99};
// double nowleds = led_fades[g_iStatusCycle];
// printf("g_iStatusCycle=%d\tLeds: %f\n",g_iStatusCycle,nowleds);
// surface_fader(g_hStatusSurface, nowleds, nowleds, nowleds, -1, 0);
g_iStatusCycle--;
if(!g_iStatusCycle) {
HD_ResetStatus(); // just do not know other way to switch off HD leds
}
}
// New simplified code:
// . Oliver Schmidt gets a flickering mouse cursor with this code
if (/*framedc &&*/ anydirty)
{
// Draw up entire Apple 2 screen
if(!g_WindowResized)
SDL_BlitSurface(g_hDeviceBitmap, NULL, screen, NULL);
else {
SDL_SoftStretch(g_hDeviceBitmap,&origRect,g_origscreen,&newRect);
SDL_BlitSurface(g_origscreen, NULL, screen, NULL);
}
if(bStatusShow && g_ShowLeds) SDL_BlitSurface(g_hStatusSurface, NULL, screen, &srect);
SDL_Flip(screen); // flip SDL buffers
// BitBlt(framedc,0,0,560,384,g_hDeviceDC,0,0,SRCCOPY);
// GdiFlush();
}
else if(bStatusShow) {
if(/*bStatusShow*/ g_ShowLeds) SDL_BlitSurface(g_hStatusSurface, NULL, screen, &srect);
SDL_UpdateRect(screen, srect.x, srect.y, STATUS_PANEL_W, STATUS_PANEL_H);
}
// 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 nCyclesLeft)
{
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(nCyclesLeft);
}
//===========================================================================
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, const DWORD uExecutedCycles)
{
// get video scanner position
//
int nCycles = CpuGetCyclesThisFrame(uExecutedCycles);
// machine state switches
//
int nHires = (SW_HIRES & !SW_TEXT) ? 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; -- not used??
// int nScanCycles = nScanLines * kHClocks; -- not used???
// 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; --- not used?
// calculate scanning memory address
//
if (SW_HIRES && SW_MIXED && (v_4 & v_2)) // NICK: Should this be (SW_HIRES && !SW_TEXT) instead of just 'SW_HIRES' ?
{
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);
}
//===========================================================================
// Derived from VideoGetScannerAddress()
bool VideoGetVbl(const DWORD uExecutedCycles)
{
// get video scanner position
//
int nCycles = CpuGetCyclesThisFrame(uExecutedCycles);
// calculate video parameters according to display standard
//
int nScanLines = bVideoScannerNTSC ? kNTSCScanLines : kPALScanLines;
// 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_3 = (nVState >> 6) & 1;
int v_4 = (nVState >> 7) & 1;
// update VBL' state
//
if (v_4 & v_3) // VBL?
{
return false; // Y: VBL' is false
}
else
{
return true; // N: VBL' is true
}
}
//===========================================================================
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