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AppleWin/source/RGBMonitor.cpp

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// Sync'd with 1.25.0.4 source
#include "StdAfx.h"
#include "Frame.h"
#include "Memory.h" // MemGetMainPtr() MemGetAuxPtr()
#include "Video.h"
#include "RGBMonitor.h"
#include "YamlHelper.h"
const int HIRES_COLUMN_SUBUNIT_SIZE = 16;
const int HIRES_COLUMN_UNIT_SIZE = (HIRES_COLUMN_SUBUNIT_SIZE)*2;
const int HIRES_NUMBER_COLUMNS = (1<<5); // 5 bits
const int SRCOFFS_LORES = 0; // 0
const int SRCOFFS_HIRES = (SRCOFFS_LORES + 16); // 16
const int SRCOFFS_DHIRES = (SRCOFFS_HIRES + (HIRES_NUMBER_COLUMNS*HIRES_COLUMN_UNIT_SIZE)); // 1040
const int SRCOFFS_TOTAL = (SRCOFFS_DHIRES + 2560); // 3600
const int MAX_SOURCE_Y = 256;
static LPBYTE g_aSourceStartofLine[ MAX_SOURCE_Y ];
#define SETSOURCEPIXEL(x,y,c) g_aSourceStartofLine[(y)][(x)] = (c)
// TC: Tried to remove HiresToPalIndex[] translation table, so get purple bars when hires data is: 0x80 0x80...
// . V_CreateLookup_HiResHalfPixel_Authentic() uses both ColorMapping (CM_xxx) indices and Color_Palette_Index_e (HGR_xxx)!
#define DO_OPT_PALETTE 0
enum Color_Palette_Index_e
{
// hires (don't change order) - For tv emulation HGR Video Mode
#if DO_OPT_PALETTE
HGR_VIOLET // HCOLOR=2 VIOLET , 2800: 01 00 55 2A
, HGR_BLUE // HCOLOR=6 BLUE , 3000: 81 00 D5 AA
, HGR_GREEN // HCOLOR=1 GREEN , 2400: 02 00 2A 55
, HGR_ORANGE // HCOLOR=5 ORANGE , 2C00: 82 00 AA D5
, HGR_BLACK
, HGR_WHITE
#else
HGR_BLACK
, HGR_WHITE
, HGR_BLUE // HCOLOR=6 BLUE , 3000: 81 00 D5 AA
, HGR_ORANGE // HCOLOR=5 ORANGE , 2C00: 82 00 AA D5
, HGR_GREEN // HCOLOR=1 GREEN , 2400: 02 00 2A 55
, HGR_VIOLET // HCOLOR=2 VIOLET , 2800: 01 00 55 2A
#endif
// TV emu
, HGR_GREY1
, HGR_GREY2
, HGR_YELLOW
, HGR_AQUA
, HGR_PURPLE
, HGR_PINK
// lores & dhires
, BLACK
, DEEP_RED
, DARK_BLUE
, MAGENTA
, DARK_GREEN
, DARK_GRAY
, BLUE
, LIGHT_BLUE
, BROWN
, ORANGE
, LIGHT_GRAY
, PINK
, GREEN
, YELLOW
, AQUA
, WHITE
};
// __ Map HGR color index to Palette index
enum ColorMapping
{
CM_Violet
, CM_Blue
, CM_Green
, CM_Orange
, CM_Black
, CM_White
, NUM_COLOR_MAPPING
};
const BYTE HiresToPalIndex[ NUM_COLOR_MAPPING ] =
{
HGR_VIOLET
, HGR_BLUE
, HGR_GREEN
, HGR_ORANGE
, HGR_BLACK
, HGR_WHITE
};
const BYTE LoresResColors[16] = {
BLACK, DEEP_RED, DARK_BLUE, MAGENTA,
DARK_GREEN,DARK_GRAY,BLUE, LIGHT_BLUE,
BROWN, ORANGE, LIGHT_GRAY,PINK,
GREEN, YELLOW, AQUA, WHITE
};
const BYTE DoubleHiresPalIndex[16] = {
BLACK, DARK_BLUE, DARK_GREEN,BLUE,
BROWN, LIGHT_GRAY,GREEN, AQUA,
DEEP_RED,MAGENTA, DARK_GRAY, LIGHT_BLUE,
ORANGE, PINK, YELLOW, WHITE
};
#define SETRGBCOLOR(r,g,b) {b,g,r,0}
static RGBQUAD PalIndex2RGB[] =
{
// hires
#if DO_OPT_PALETTE
SETRGBCOLOR(/*MAGENTA, */ 0xC7,0x34,0xFF), // FD Linards Tweaked 0xFF,0x00,0xFF -> 0xC7,0x34,0xFF
SETRGBCOLOR(/*BLUE, */ 0x0D,0xA1,0xFF), // FC Linards Tweaked 0x00,0x00,0xFF -> 0x0D,0xA1,0xFF
SETRGBCOLOR(/*GREEN, */ 0x38,0xCB,0x00), // FA Linards Tweaked 0x00,0xFF,0x00 -> 0x38,0xCB,0x00
SETRGBCOLOR(/*ORANGE, */ 0xF2,0x5E,0x00), // 0xFF,0x80,0x00 -> Linards Tweaked 0xF2,0x5E,0x00
SETRGBCOLOR(/*HGR_BLACK, */ 0x00,0x00,0x00), // For TV emulation HGR Video Mode
SETRGBCOLOR(/*HGR_WHITE, */ 0xFF,0xFF,0xFF),
#else
SETRGBCOLOR(/*HGR_BLACK, */ 0x00,0x00,0x00), // For TV emulation HGR Video Mode
SETRGBCOLOR(/*HGR_WHITE, */ 0xFF,0xFF,0xFF),
SETRGBCOLOR(/*BLUE, */ 0x0D,0xA1,0xFF), // FC Linards Tweaked 0x00,0x00,0xFF -> 0x0D,0xA1,0xFF
SETRGBCOLOR(/*ORANGE, */ 0xF2,0x5E,0x00), // 0xFF,0x80,0x00 -> Linards Tweaked 0xF2,0x5E,0x00
SETRGBCOLOR(/*GREEN, */ 0x38,0xCB,0x00), // FA Linards Tweaked 0x00,0xFF,0x00 -> 0x38,0xCB,0x00
SETRGBCOLOR(/*MAGENTA, */ 0xC7,0x34,0xFF), // FD Linards Tweaked 0xFF,0x00,0xFF -> 0xC7,0x34,0xFF
#endif
// TV emu
SETRGBCOLOR(/*HGR_GREY1, */ 0x80,0x80,0x80),
SETRGBCOLOR(/*HGR_GREY2, */ 0x80,0x80,0x80),
SETRGBCOLOR(/*HGR_YELLOW,*/ 0x9E,0x9E,0x00), // 0xD0,0xB0,0x10 -> 0x9E,0x9E,0x00
SETRGBCOLOR(/*HGR_AQUA, */ 0x00,0xCD,0x4A), // 0x20,0xB0,0xB0 -> 0x00,0xCD,0x4A
SETRGBCOLOR(/*HGR_PURPLE,*/ 0x61,0x61,0xFF), // 0x60,0x50,0xE0 -> 0x61,0x61,0xFF
SETRGBCOLOR(/*HGR_PINK, */ 0xFF,0x32,0xB5), // 0xD0,0x40,0xA0 -> 0xFF,0x32,0xB5
// lores & dhires
SETRGBCOLOR(/*BLACK,*/ 0x00,0x00,0x00), // 0
SETRGBCOLOR(/*DEEP_RED,*/ 0x9D,0x09,0x66), // 0xD0,0x00,0x30 -> Linards Tweaked 0x9D,0x09,0x66
SETRGBCOLOR(/*DARK_BLUE,*/ 0x2A,0x2A,0xE5), // 4 // Linards Tweaked 0x00,0x00,0x80 -> 0x2A,0x2A,0xE5
SETRGBCOLOR(/*MAGENTA,*/ 0xC7,0x34,0xFF), // FD Linards Tweaked 0xFF,0x00,0xFF -> 0xC7,0x34,0xFF
SETRGBCOLOR(/*DARK_GREEN,*/ 0x00,0x80,0x00), // 2 // not used
SETRGBCOLOR(/*DARK_GRAY,*/ 0x80,0x80,0x80), // F8
SETRGBCOLOR(/*BLUE,*/ 0x0D,0xA1,0xFF), // FC Linards Tweaked 0x00,0x00,0xFF -> 0x0D,0xA1,0xFF
SETRGBCOLOR(/*LIGHT_BLUE,*/ 0xAA,0xAA,0xFF), // 0x60,0xA0,0xFF -> Linards Tweaked 0xAA,0xAA,0xFF
SETRGBCOLOR(/*BROWN,*/ 0x55,0x55,0x00), // 0x80,0x50,0x00 -> Linards Tweaked 0x55,0x55,0x00
SETRGBCOLOR(/*ORANGE,*/ 0xF2,0x5E,0x00), // 0xFF,0x80,0x00 -> Linards Tweaked 0xF2,0x5E,0x00
SETRGBCOLOR(/*LIGHT_GRAY,*/ 0xC0,0xC0,0xC0), // 7 // GR: COLOR=10
SETRGBCOLOR(/*PINK,*/ 0xFF,0x89,0xE5), // 0xFF,0x90,0x80 -> Linards Tweaked 0xFF,0x89,0xE5
SETRGBCOLOR(/*GREEN,*/ 0x38,0xCB,0x00), // FA Linards Tweaked 0x00,0xFF,0x00 -> 0x38,0xCB,0x00
SETRGBCOLOR(/*YELLOW,*/ 0xD5,0xD5,0x1A), // FB Linards Tweaked 0xFF,0xFF,0x00 -> 0xD5,0xD5,0x1A
SETRGBCOLOR(/*AQUA,*/ 0x62,0xF6,0x99), // 0x40,0xFF,0x90 -> Linards Tweaked 0x62,0xF6,0x99
SETRGBCOLOR(/*WHITE,*/ 0xFF,0xFF,0xFF),
};
//===========================================================================
static void V_CreateLookup_DoubleHires ()
{
#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 0
if (g_eVideoType == VT_COLOR_TEXT_OPTIMIZED)
{
// Activate for fringe reduction on white HGR text - drawback: loss of color mix patterns in HGR Video Mode.
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;
}
}
#endif
int y = byteval;
for (int x = 0; x < SIZE; x++) {
SETSOURCEPIXEL(SRCOFFS_DHIRES+coloffs+x,y ,DoubleHiresPalIndex[ color[x] ]);
}
}
}
#undef SIZE
#undef OFFSET
}
//===========================================================================
void V_CreateLookup_Lores()
{
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,LoresResColors[color]);
}
//===========================================================================
// Lookup Table:
// y (0-255) * 32 columns of 32 bytes
// . each column is: high-bit (prev byte) & 2 pixels from previous byte & 2 pixels from next byte
// . each 32-byte unit is 2 * 16-byte sub-units: 16 bytes for even video byte & 16 bytes for odd video byte
// . where 16 bytes represent the 7 Apple pixels, expanded to 14 pixels
// currHighBit=0: {14 pixels + 2 pad} * 2
// currHighBit=1: {1 pixel + 14 pixels + 1 pad} * 2
// . and each byte is an index into the colour palette
void V_CreateLookup_HiResHalfPixel_Authentic(VideoType_e videoType)
{
// high-bit & 2-bits from previous byte, 2-bits from next byte = 2^5 = 32 total permutations
for (int iColumn = 0; iColumn < HIRES_NUMBER_COLUMNS; iColumn++)
{
const int offsetx = iColumn * HIRES_COLUMN_UNIT_SIZE; // every column is 32 bytes wide
const int prevHighBit = (iColumn >= 16) ? 1 : 0;
int aPixels[11]; // c2 c3 b6 b5 b4 b3 b2 b1 b0 c0 c1
aPixels[ 0] = iColumn & 4; // previous byte, 2nd last pixel
aPixels[ 1] = iColumn & 8; // previous byte, last pixel
aPixels[ 9] = iColumn & 1; // next byte, first pixel
aPixels[10] = iColumn & 2; // next byte, second pixel
for (unsigned int iByte = 0; iByte < 256; iByte++)
{
// Convert raw pixel iByte value to binary and stuff into bit array of pixels on off
for (int iPixel = 2, nBitMask = 1; iPixel < 9; iPixel++)
{
aPixels[iPixel] = ((iByte & nBitMask) != 0);
nBitMask <<= 1;
}
const int currHighBit = (iByte >> 7) & 1;
const int y = iByte;
// Fixup missing pixels that normally have been scan-line shifted -- Apple "half-pixel" -- but crosses video byte boundaries.
// NB. Setup first byte in each 16-byte sub-unit
if( currHighBit )
{
if ( aPixels[1] ) // prev pixel on?
{
if (aPixels[2] || aPixels[0]) // White if pixel from previous byte and first pixel of this byte is on
{
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+0 ,y , HGR_WHITE );
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+HIRES_COLUMN_SUBUNIT_SIZE,y , HGR_WHITE );
}
else
{
if ( !prevHighBit ) // GH#616
{
// colour the half-pixel black (was orange - not good for Nox Archaist, eg. 2000:00 40 E0; 2000:00 40 9E)
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+0 ,y , HGR_BLACK );
}
else
{
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+0 ,y , HGR_ORANGE ); // left half of orange pixels
}
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+HIRES_COLUMN_SUBUNIT_SIZE,y , HGR_BLUE ); // right half of blue pixels 4, 11, 18, ...
}
}
else if ( aPixels[0] ) // prev prev pixel on
{
if ( aPixels[2] )
{
if ((videoType == VT_COLOR_MONITOR_RGB) || ( !aPixels[3] ))
{
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+0 ,y , HGR_BLUE ); // 2000:D5 AA D5
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+HIRES_COLUMN_SUBUNIT_SIZE,y , HGR_ORANGE ); // 2000: AA D5
}
}
}
}
//
int x = currHighBit;
for (int odd = 0; odd < 2; odd++) // even then odd sub-units
{
if (odd)
x = HIRES_COLUMN_SUBUNIT_SIZE + currHighBit;
for (int iPixel = 2; iPixel < 9; iPixel++)
{
int color = CM_Black;
if (aPixels[iPixel]) // pixel on
{
color = CM_White;
if (aPixels[iPixel-1] || aPixels[iPixel+1]) // adjacent pixels are always white
color = CM_White;
else
color = ((odd ^ (iPixel&1)) << 1) | currHighBit; // map raw color to our hi-res colors
}
else if (aPixels[iPixel-1] && aPixels[iPixel+1]) // IF prev_pixel && next_pixel THEN
{
// Activate fringe reduction on white HGR text - drawback: loss of color mix patterns in HGR video mode.
if (
(videoType == VT_COLOR_MONITOR_RGB) // Fill in colors in between white pixels
|| !(aPixels[iPixel-2] && aPixels[iPixel+2]) ) // VT_COLOR_TEXT_OPTIMIZED -> Don't fill in colors in between white
{
color = ((odd ^ !(iPixel&1)) << 1) | currHighBit; // No white HGR text optimization
}
}
// Each HGR 7M pixel is a left 14M & right 14M DHGR pixel
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+x ,y ,HiresToPalIndex[color]); // Color for left 14M pixel
SETSOURCEPIXEL(SRCOFFS_HIRES+offsetx+x+1,y ,HiresToPalIndex[color]); // Color for right 14M pixel
x += 2;
}
} // even/odd sub-units
} // iByte
} // iColumn
}
//===========================================================================
// For AppleWin 1.25 "tv emulation" HGR Video Mode
const UINT FRAMEBUFFER_W = 560;
const UINT FRAMEBUFFER_H = 384;
const UINT HGR_MATRIX_YOFFSET = 2;
static BYTE hgrpixelmatrix[FRAMEBUFFER_W][FRAMEBUFFER_H/2 + 2 * HGR_MATRIX_YOFFSET]; // 2 extra scan lines on top & bottom
static BYTE colormixbuffer[6]; // 6 hires colours
static WORD colormixmap[6][6][6]; // top x middle x bottom
BYTE MixColors(BYTE c1, BYTE c2)
{
#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_ORANGE))
return HGR_GREY1;
else if (COMBINATION(c1,c2,HGR_GREEN,HGR_VIOLET))
return HGR_GREY2;
else if (COMBINATION(c1,c2,HGR_ORANGE,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_VIOLET))
return HGR_PURPLE;
else if (COMBINATION(c1,c2,HGR_ORANGE,HGR_VIOLET))
return HGR_PINK;
else
return WHITE; // visible failure indicator
#undef COMBINATION
}
static void CreateColorMixMap(void)
{
const int FROM_NEIGHBOUR = 0x00;
const int MIX_THRESHOLD = HGR_BLUE; // (skip) bottom 2 HGR colors
for (int t=0; t<6; t++) // Color_Palette_Index_e::HGR_BLACK(0) ... Color_Palette_Index_e::HGR_VIOLET(5)
{
for (int m=0; m<6; m++)
{
for (int b=0; b<6; b++)
{
BYTE cTop = t;
BYTE cMid = m;
BYTE cBot = b;
WORD mixTop, mixBot;
if (cMid < MIX_THRESHOLD)
{
mixTop = mixBot = cMid;
}
else
{
if (cTop < MIX_THRESHOLD)
mixTop = FROM_NEIGHBOUR;
else
mixTop = MixColors(cMid,cTop);
if (cBot < MIX_THRESHOLD)
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;
}
}
}
}
static void MixColorsVertical(int matx, int maty, bool isSWMIXED)
{
int bot1idx, bot2idx;
if (isSWMIXED && 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;
}
WORD 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);
}
static void CopyMixedSource(int x, int y, int sx, int sy, bgra_t *pVideoAddress)
{
const BYTE* const pSrc = g_aSourceStartofLine[ sy ] + sx;
const int matx = x*14;
const int maty = HGR_MATRIX_YOFFSET + y;
const bool isSWMIXED = VideoGetSWMIXED();
// transfer 14 pixels (i.e. the visible part of an apple hgr-byte) from row to pixelmatrix
for (int nBytes=13; nBytes>=0; nBytes--)
{
hgrpixelmatrix[matx+nBytes][maty] = *(pSrc+nBytes);
}
const bool bIsHalfScanLines = IsVideoStyle(VS_HALF_SCANLINES);
const UINT frameBufferWidth = GetFrameBufferWidth();
for (int nBytes=13; nBytes>=0; nBytes--)
{
// color mixing between adjacent scanlines at current x position
MixColorsVertical(matx+nBytes, maty, isSWMIXED); //Post: colormixbuffer[]
UINT32* pDst = (UINT32*) pVideoAddress;
for (int h=HGR_MATRIX_YOFFSET; h<=HGR_MATRIX_YOFFSET+1; h++)
{
if (bIsHalfScanLines && (h & 1))
{
// 50% Half Scan Line clears every odd scanline (and SHIFT+PrintScreen saves only the even rows)
*(pDst+nBytes) = 0;
}
else
{
_ASSERT( colormixbuffer[h] < (sizeof(PalIndex2RGB)/sizeof(PalIndex2RGB[0])) );
const RGBQUAD& rRGB = PalIndex2RGB[ colormixbuffer[h] ];
*(pDst+nBytes) = *reinterpret_cast<const UINT32 *>(&rRGB);
}
pDst -= frameBufferWidth;
}
}
}
//===========================================================================
// Pre: nSrcAdjustment: for 160-color images, src is +1 compared to dst
static void CopySource(int w, int h, int sx, int sy, bgra_t *pVideoAddress, const int nSrcAdjustment = 0)
{
UINT32* pDst = (UINT32*) pVideoAddress;
const BYTE* const pSrc = g_aSourceStartofLine[ sy ] + sx;
const bool bIsHalfScanLines = IsVideoStyle(VS_HALF_SCANLINES);
const UINT frameBufferWidth = GetFrameBufferWidth();
while (h--)
{
if (bIsHalfScanLines && !(h & 1))
{
// 50% Half Scan Line clears every odd scanline (and SHIFT+PrintScreen saves only the even rows)
std::fill(pDst, pDst + w, 0);
}
else
{
for (int nBytes=0; nBytes<w; ++nBytes)
{
_ASSERT( *(pSrc+nBytes+nSrcAdjustment) < (sizeof(PalIndex2RGB)/sizeof(PalIndex2RGB[0])) );
const RGBQUAD& rRGB = PalIndex2RGB[ *(pSrc+nBytes+nSrcAdjustment) ];
*(pDst+nBytes) = *reinterpret_cast<const UINT32 *>(&rRGB);
}
}
pDst -= frameBufferWidth;
}
}
//===========================================================================
#define HIRES_COLUMN_OFFSET (((byteval1 & 0xE0) << 2) | ((byteval3 & 0x03) << 5)) // (prevHighBit | last 2 pixels | next 2 pixesl) * HIRES_COLUMN_UNIT_SIZE
void UpdateHiResCell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
{
uint8_t *pMain = MemGetMainPtr(addr);
BYTE byteval1 = (x > 0) ? *(pMain-1) : 0;
BYTE byteval2 = *(pMain);
BYTE byteval3 = (x < 39) ? *(pMain+1) : 0;
if (IsVideoStyle(VS_COLOR_VERTICAL_BLEND))
{
CopyMixedSource(x, y, SRCOFFS_HIRES+HIRES_COLUMN_OFFSET+((x & 1)*HIRES_COLUMN_SUBUNIT_SIZE), (int)byteval2, pVideoAddress);
}
else
{
CopySource(14,2, SRCOFFS_HIRES+HIRES_COLUMN_OFFSET+((x & 1)*HIRES_COLUMN_SUBUNIT_SIZE), (int)byteval2, pVideoAddress);
}
}
//===========================================================================
#define COLOR ((xpixel + PIXEL) & 3)
#define VALUE (dwordval >> (4 + PIXEL - COLOR))
void UpdateDHiResCell (int x, int y, uint16_t addr, bgra_t *pVideoAddress, bool updateAux, bool updateMain)
{
const int xpixel = x*14;
uint8_t *pAux = MemGetAuxPtr(addr);
uint8_t *pMain = MemGetMainPtr(addr);
BYTE byteval1 = (x > 0) ? *(pMain-1) : 0;
BYTE byteval2 = *pAux;
BYTE byteval3 = *pMain;
BYTE byteval4 = (x < 39) ? *(pAux+1) : 0;
DWORD dwordval = (byteval1 & 0x70) | ((byteval2 & 0x7F) << 7) |
((byteval3 & 0x7F) << 14) | ((byteval4 & 0x07) << 21);
#define PIXEL 0
if (updateAux)
{
CopySource(7,2, SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR, LOBYTE(VALUE), pVideoAddress);
pVideoAddress += 7;
}
#undef PIXEL
#define PIXEL 7
if (updateMain)
{
CopySource(7,2, SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR, LOBYTE(VALUE), pVideoAddress);
}
#undef PIXEL
}
#if 1
// Squash the 640 pixel image into 560 pixels
int UpdateDHiRes160Cell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
{
const int xpixel = x*16;
uint8_t *pAux = MemGetAuxPtr(addr);
uint8_t *pMain = MemGetMainPtr(addr);
BYTE byteval1 = (x > 0) ? *(pMain-1) : 0;
BYTE byteval2 = *pAux;
BYTE byteval3 = *pMain;
BYTE byteval4 = (x < 39) ? *(pAux+1) : 0;
DWORD dwordval = (byteval1 & 0xF8) | ((byteval2 & 0xFF) << 8) |
((byteval3 & 0xFF) << 16) | ((byteval4 & 0x1F) << 24);
dwordval <<= 2;
#define PIXEL 0
CopySource(7,2, SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR, LOBYTE(VALUE), pVideoAddress, 1);
pVideoAddress += 7;
#undef PIXEL
#define PIXEL 8
CopySource(7,2, SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR, LOBYTE(VALUE), pVideoAddress, 1);
#undef PIXEL
return 7*2;
}
#else
// Left align the 640 pixel image, losing the right-hand 80 pixels
int UpdateDHiRes160Cell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
{
const int xpixel = x*16;
if (xpixel >= 560) // clip to our 560px display (losing 80 pixels)
return 0;
uint8_t *pAux = MemGetAuxPtr(addr);
uint8_t *pMain = MemGetMainPtr(addr);
BYTE byteval1 = (x > 0) ? *(pMain-1) : 0;
BYTE byteval2 = *pAux;
BYTE byteval3 = *pMain;
BYTE byteval4 = (x < 39) ? *(pAux+1) : 0;
DWORD dwordval = (byteval1 & 0xFC) | ((byteval2 & 0xFF) << 8) | // NB. Needs more bits than above squashed version, to avoid vertical black lines
((byteval3 & 0xFF) << 16) | ((byteval4 & 0x3F) << 24);
dwordval <<= 2;
#define PIXEL 0
CopySource(8,2, SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR, LOBYTE(VALUE), pVideoAddress);
pVideoAddress += 8;
#undef PIXEL
#define PIXEL 8
CopySource(8,2, SRCOFFS_DHIRES+10*HIBYTE(VALUE)+COLOR, LOBYTE(VALUE), pVideoAddress);
#undef PIXEL
return 8*2;
}
#endif
//===========================================================================
// Tested with Deater's Cycle-Counting Megademo
void UpdateLoResCell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
{
const BYTE val = *MemGetMainPtr(addr);
if ((y & 4) == 0)
{
CopySource(14,2, SRCOFFS_LORES+((x & 1) << 1), ((val & 0xF) << 4), pVideoAddress);
}
else
{
CopySource(14,2, SRCOFFS_LORES+((x & 1) << 1), (val & 0xF0), pVideoAddress);
}
}
//===========================================================================
#define ROL_NIB(x) ( (((x)<<1)&0xF) | (((x)>>3)&1) )
// Tested with FT's Ansi Story
void UpdateDLoResCell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
{
BYTE auxval = *MemGetAuxPtr(addr);
const BYTE mainval = *MemGetMainPtr(addr);
const BYTE auxval_h = auxval >> 4;
const BYTE auxval_l = auxval & 0xF;
auxval = (ROL_NIB(auxval_h)<<4) | ROL_NIB(auxval_l);
if ((y & 4) == 0)
{
CopySource(7,2, SRCOFFS_LORES+((x & 1) << 1), ((auxval & 0xF) << 4), pVideoAddress);
CopySource(7,2, SRCOFFS_LORES+((x & 1) << 1), ((mainval & 0xF) << 4), pVideoAddress+7);
}
else
{
CopySource(7,2, SRCOFFS_LORES+((x & 1) << 1), (auxval & 0xF0), pVideoAddress);
CopySource(7,2, SRCOFFS_LORES+((x & 1) << 1), (mainval & 0xF0), pVideoAddress+7);
}
}
//===========================================================================
static LPBYTE g_pSourcePixels = NULL;
static void V_CreateDIBSections(void)
{
if (!g_pSourcePixels) // NB. Will be non-zero after a VM restart (GH#809)
g_pSourcePixels = new BYTE[SRCOFFS_TOTAL * MAX_SOURCE_Y];
// 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*MAX_SOURCE_Y);
V_CreateLookup_Lores();
V_CreateLookup_HiResHalfPixel_Authentic(VT_COLOR_MONITOR_RGB);
V_CreateLookup_DoubleHires();
CreateColorMixMap();
}
void VideoInitializeOriginal(baseColors_t pBaseNtscColors)
{
// CREATE THE SOURCE IMAGE AND DRAW INTO THE SOURCE BIT BUFFER
V_CreateDIBSections();
memcpy(&PalIndex2RGB[BLACK], *pBaseNtscColors, sizeof(RGBQUAD)*kNumBaseColors);
PalIndex2RGB[HGR_BLUE] = PalIndex2RGB[BLUE];
PalIndex2RGB[HGR_ORANGE] = PalIndex2RGB[ORANGE];
PalIndex2RGB[HGR_GREEN] = PalIndex2RGB[GREEN];
PalIndex2RGB[HGR_VIOLET] = PalIndex2RGB[MAGENTA];
}
//===========================================================================
static UINT g_rgbFlags = 0;
static UINT g_rgbMode = 0;
static WORD g_rgbPrevAN3Addr = 0;
static bool g_rgbSet80COL = false;
static bool g_rgbInvertBit7 = false;
// Video7 RGB card:
// . Clock in the !80COL state to define the 2 flags: F2, F1
// . Clocking done by toggling AN3
// . NB. There's a final 5th AN3 transition to set DHGR mode
void RGB_SetVideoMode(WORD address)
{
if ((address&~1) == 0x0C) // 0x0C or 0x0D? (80COL)
{
g_rgbSet80COL = true;
return;
}
if ((address&~1) != 0x5E) // 0x5E or 0x5F? (DHIRES)
return;
// Precondition before toggling AN3:
// . Video7 manual: set 80STORE, but "King's Quest 1"(*) will re-enable RGB card's MIX mode with only VF_TEXT & VF_HIRES set!
// . "Extended 80-Column Text/AppleColor Card" manual: TEXT off($C050), MIXED off($C052), HIRES on($C057)
// . (*) "King's Quest 1" - see routine at 0x5FD7 (trigger by pressing TAB twice)
// . Apple II desktop sets DHGR B&W mode with HIRES off! (GH#631)
// Maybe there is no video-mode precondition?
// . After setting 80COL on/off then need a 0x5E->0x5F toggle. So if we see a 0x5F then reset (GH#633)
if ((g_uVideoMode & VF_MIXED) || (g_rgbSet80COL && address == 0x5F))
{
g_rgbMode = 0;
g_rgbPrevAN3Addr = 0;
g_rgbSet80COL = false;
return;
}
if (address == 0x5F && g_rgbPrevAN3Addr == 0x5E) // Check for AN3 clock transition
{
g_rgbFlags = (g_rgbFlags<<1) & 3;
g_rgbFlags |= ((g_uVideoMode & VF_80COL) ? 0 : 1); // clock in !80COL
g_rgbMode = g_rgbFlags; // latch F2,F1
}
g_rgbPrevAN3Addr = address;
g_rgbSet80COL = false;
}
bool RGB_Is140Mode(void) // Extended 80-Column Text/AppleColor Card's Mode 2
{
return g_rgbMode == 0;
}
bool RGB_Is160Mode(void) // Extended 80-Column Text/AppleColor Card: N/A
{
return g_rgbMode == 1;
}
bool RGB_IsMixMode(void) // Extended 80-Column Text/AppleColor Card's Mode 3
{
return g_rgbMode == 2;
}
bool RGB_Is560Mode(void) // Extended 80-Column Text/AppleColor Card's Mode 1
{
return g_rgbMode == 3;
}
bool RGB_IsMixModeInvertBit7(void)
{
return RGB_IsMixMode() && g_rgbInvertBit7;
}
void RGB_ResetState(void)
{
g_rgbFlags = 0;
g_rgbMode = 0;
g_rgbPrevAN3Addr = 0;
}
void RGB_SetInvertBit7(bool state)
{
g_rgbInvertBit7 = state;
}
//===========================================================================
#define SS_YAML_KEY_RGB_CARD "AppleColor RGB Adaptor"
// NB. No version - this is determined by the parent card
#define SS_YAML_KEY_RGB_FLAGS "RGB mode flags"
#define SS_YAML_KEY_RGB_MODE "RGB mode"
#define SS_YAML_KEY_RGB_PREVIOUS_AN3 "Previous AN3"
#define SS_YAML_KEY_RGB_80COL_CHANGED "80COL changed"
#define SS_YAML_KEY_RGB_INVERT_BIT7 "Invert bit7"
void RGB_SaveSnapshot(YamlSaveHelper& yamlSaveHelper)
{
YamlSaveHelper::Label label(yamlSaveHelper, "%s:\n", SS_YAML_KEY_RGB_CARD);
yamlSaveHelper.SaveHexUint8(SS_YAML_KEY_RGB_FLAGS, g_rgbFlags);
yamlSaveHelper.SaveHexUint8(SS_YAML_KEY_RGB_MODE, g_rgbMode);
yamlSaveHelper.SaveHexUint8(SS_YAML_KEY_RGB_PREVIOUS_AN3, g_rgbPrevAN3Addr);
yamlSaveHelper.SaveBool(SS_YAML_KEY_RGB_80COL_CHANGED, g_rgbSet80COL);
yamlSaveHelper.SaveBool(SS_YAML_KEY_RGB_INVERT_BIT7, g_rgbInvertBit7);
}
void RGB_LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT cardVersion)
{
if (!yamlLoadHelper.GetSubMap(SS_YAML_KEY_RGB_CARD))
throw std::string("Card: Expected key: ") + std::string(SS_YAML_KEY_RGB_CARD);
g_rgbFlags = yamlLoadHelper.LoadUint(SS_YAML_KEY_RGB_FLAGS);
g_rgbMode = yamlLoadHelper.LoadUint(SS_YAML_KEY_RGB_MODE);
g_rgbPrevAN3Addr = yamlLoadHelper.LoadUint(SS_YAML_KEY_RGB_PREVIOUS_AN3);
if (cardVersion >= 3)
{
g_rgbSet80COL = yamlLoadHelper.LoadBool(SS_YAML_KEY_RGB_80COL_CHANGED);
g_rgbInvertBit7 = yamlLoadHelper.LoadBool(SS_YAML_KEY_RGB_INVERT_BIT7);
}
yamlLoadHelper.PopMap();
}
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