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Improved debugger video performance (#800)

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Removed very slow BitBlt() GDI calls in PrintGlyph() - now 18x faster in Release config!
. Replaced GDI call FillRect() with new FillBackground()
. Added missing bitmap declarations in GetDebuggerMemDC()
Fixed AdditionalIncludeDirectories for Debugger source files
This commit is contained in:
Cyril Lambin 2020-06-17 22:56:35 +02:00 committed by GitHub
parent e5ccf26d4f
commit af9568cbbf
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 159 additions and 152 deletions
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8
AppleWinExpress2019.vcxproj
View File

@ -372,7 +372,7 @@
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_CRT_SECURE_NO_DEPRECATE;NO_DSHOW_STRSAFE;YAML_DECLARE_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>source\cpu;source\emulator;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>source;source\cpu;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
<BasicRuntimeChecks>Default</BasicRuntimeChecks>
@ -399,7 +399,7 @@
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_CRT_SECURE_NO_DEPRECATE;NO_DSHOW_STRSAFE;NO_DIRECT_X;YAML_DECLARE_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>source\cpu;source\emulator;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>source;source\cpu;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
</ClCompile>
@ -427,7 +427,7 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_CRT_SECURE_NO_DEPRECATE;NO_DSHOW_STRSAFE;YAML_DECLARE_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>source\cpu;source\emulator;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>source;source\cpu;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
<FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
<AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
@ -459,7 +459,7 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_CRT_SECURE_NO_DEPRECATE;NO_DSHOW_STRSAFE;NO_DIRECT_X;YAML_DECLARE_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>source\cpu;source\emulator;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>source;source\cpu;source\debugger;zlib;zip_lib;libyaml\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
<FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
<AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>

58
source/Debugger/Debug.cpp
View File

@ -8890,67 +8890,13 @@ void DebugInitialize ()
#endif
// Must select a bitmap into the temp DC !
HDC hTmpDC = CreateCompatibleDC( FrameGetDC() );
// HDC hTmpDC = CreateCompatibleDC( FrameGetDC() );
#if _DEBUG
nError = GetLastError();
#endif
g_hConsoleFontDC = CreateCompatibleDC( FrameGetDC() );
#if _DEBUG
nError = GetLastError();
#endif
#if APPLE_FONT_NEW
// Pre-scaled bitmap
g_hConsoleFontBitmap = LoadBitmap(g_hInstance,TEXT("IDB_DEBUG_FONT_7x8"));
SelectObject( g_hConsoleFontDC, g_hConsoleFontBitmap );
#else
// Scale at run-time
// Black = Transparent
// White = Opaque
HBITMAP hTmpBitamp = LoadBitmap(g_hInstance,TEXT("CHARSET40"));
#if _DEBUG
nError = GetLastError();
#endif
SelectObject( hTmpDC ,hTmpBitamp);
#if _DEBUG
nError = GetLastError();
#endif
g_hConsoleFontBrush = GetStockBrush( WHITE_BRUSH );
SelectObject(g_hConsoleFontDC, g_hConsoleFontBrush );
// SelectObject(hTmpDC, g_hDebugFontBrush );
#if _DEBUG
nError = GetLastError();
#endif
g_hConsoleFontBitmap = CreateCompatibleBitmap(
hTmpDC,
APPLE_FONT_X_REGIONSIZE/2, APPLE_FONT_Y_REGIONSIZE/2
);
#if _DEBUG
nError = GetLastError();
#endif
SelectObject( g_hConsoleFontDC, g_hConsoleFontBitmap );
StretchBlt(
g_hConsoleFontDC, // HDC hdcDest, // handle to destination DC
0, 0, // int nXOriginDest, int nYOriginDest, // y-coord of destination upper-left corner
APPLE_FONT_X_REGIONSIZE/2, APPLE_FONT_Y_REGIONSIZE/2, // int nWidthDest, int nHeightDest,
hTmpDC, // HDC hdcSrc, // handle to source DC
0, APPLE_FONT_Y_APPLE_80COL, // int nXOriginSrc, int nYOriginSrc,
APPLE_FONT_X_REGIONSIZE, APPLE_FONT_Y_REGIONSIZE, // int nWidthSrc, int nHeightSrc,
SRCCOPY // DWORD dwRop // raster operation code
);
DeleteObject( hTmpBitamp );
DeleteObject( hTmpDC );
#endif
GetConsoleFontDC(); // Load font
ZeroMemory( g_aConsoleDisplay, sizeof( g_aConsoleDisplay ) ); // CONSOLE_WIDTH * CONSOLE_HEIGHT );
ConsoleInputReset();

224
source/Debugger/Debugger_Display.cpp
View File

@ -4,7 +4,8 @@ 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) 2006-2014, Tom Charlesworth, Michael Pohoreski
Copyright (C) 2006-2019, Tom Charlesworth, Michael Pohoreski
Copyright (C) 2020, Tom Charlesworth, Michael Pohoreski, Cyril Lambin
AppleWin is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -23,7 +24,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/* Description: Debugger
*
* Author: Copyright (C) 2006-2010 Michael Pohoreski
* Author: Copyright (C) 2006-2020 Michael Pohoreski, (C) 2020 Cyril Lambin
*/
#include "StdAfx.h"
@ -79,10 +80,21 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// Display - Win32
static HDC g_hDebuggerMemDC = NULL;
static HBITMAP g_hDebuggerMemBM = NULL;
static LPBITMAPINFO g_pDebuggerMemFramebufferinfo = NULL;
static bgra_t* g_pDebuggerMemFramebits = NULL;
HDC g_hConsoleFontDC = NULL;
HBRUSH g_hConsoleFontBrush = NULL;
HBITMAP g_hConsoleFontBitmap = NULL;
LPBITMAPINFO g_hConsoleFontFramebufferinfo;
bgra_t* g_hConsoleFontFramebits;
char g_cConsoleBrushFG_r;
char g_cConsoleBrushFG_g;
char g_cConsoleBrushFG_b;
char g_cConsoleBrushBG_r;
char g_cConsoleBrushBG_g;
char g_cConsoleBrushBG_b;
HBRUSH g_hConsoleBrushFG = NULL;
HBRUSH g_hConsoleBrushBG = NULL;
@ -164,7 +176,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
const int DISPLAY_MINIMEM_COLUMN = INFO_COL_3;
const int DISPLAY_VIDEO_SCANNER_COLUMN = INFO_COL_3;
#else
const int DISPLAY_CPU_INFO_LEFT_COLUMN = SCREENSPLIT1 // TC: SCREENSPLIT1 is not defined anywhere in the .sln!
const int DISPLAY_CPU_INFO_LEFT_COLUMN = SCREENSPLIT1; // TC: SCREENSPLIT1 is not defined anywhere in the .sln!
const int DISPLAY_REGS_COLUMN = DISPLAY_CPU_INFO_LEFT_COLUMN;
const int DISPLAY_FLAG_COLUMN = DISPLAY_CPU_INFO_LEFT_COLUMN;
@ -214,6 +226,7 @@ static char ColorizeSpecialChar( char * sText, BYTE nData, const MemoryView_e iV
void DrawSubWindow_Symbols (Update_t bUpdate);
void DrawSubWindow_ZeroPage (Update_t bUpdate);
void DrawWindowBottom ( Update_t bUpdate, int iWindow );
char* FormatCharCopy( char *pDst, const char *pSrc, const int nLen );
@ -541,7 +554,31 @@ HDC GetDebuggerMemDC(void)
{
HDC hFrameDC = FrameGetDC();
g_hDebuggerMemDC = CreateCompatibleDC(hFrameDC);
g_hDebuggerMemBM = CreateCompatibleBitmap(hFrameDC, GetFrameBufferWidth(), GetFrameBufferHeight());
// CREATE A BITMAPINFO STRUCTURE FOR THE FRAME BUFFER
g_pDebuggerMemFramebufferinfo = (LPBITMAPINFO)VirtualAlloc(
NULL,
sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD),
MEM_COMMIT,
PAGE_READWRITE);
ZeroMemory(g_pDebuggerMemFramebufferinfo, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
g_pDebuggerMemFramebufferinfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
g_pDebuggerMemFramebufferinfo->bmiHeader.biWidth = 560;
g_pDebuggerMemFramebufferinfo->bmiHeader.biHeight = 384;
g_pDebuggerMemFramebufferinfo->bmiHeader.biPlanes = 1;
g_pDebuggerMemFramebufferinfo->bmiHeader.biBitCount = 32;
g_pDebuggerMemFramebufferinfo->bmiHeader.biCompression = BI_RGB;
g_pDebuggerMemFramebufferinfo->bmiHeader.biClrUsed = 0;
// CREATE THE FRAME BUFFER DIB SECTION
g_hDebuggerMemBM = CreateDIBSection(
hFrameDC,
g_pDebuggerMemFramebufferinfo,
DIB_RGB_COLORS,
(LPVOID*)&g_pDebuggerMemFramebits, 0, 0
);
SelectObject(g_hDebuggerMemDC, g_hDebuggerMemBM);
}
@ -558,9 +595,63 @@ void ReleaseDebuggerMemDC(void)
DeleteDC(g_hDebuggerMemDC);
g_hDebuggerMemDC = NULL;
FrameReleaseDC();
DeleteObject(g_pDebuggerMemFramebufferinfo);
g_pDebuggerMemFramebits = NULL;
}
}
HDC GetConsoleFontDC(void)
{
if (!g_hConsoleFontDC)
{
HDC hFrameDC = FrameGetDC();
g_hConsoleFontDC = CreateCompatibleDC(hFrameDC);
// CREATE A BITMAPINFO STRUCTURE FOR THE FRAME BUFFER
g_hConsoleFontFramebufferinfo = (LPBITMAPINFO)VirtualAlloc(
NULL,
sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD),
MEM_COMMIT,
PAGE_READWRITE);
ZeroMemory(g_hConsoleFontFramebufferinfo, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
g_hConsoleFontFramebufferinfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
g_hConsoleFontFramebufferinfo->bmiHeader.biWidth = 112;
g_hConsoleFontFramebufferinfo->bmiHeader.biHeight = 128;
g_hConsoleFontFramebufferinfo->bmiHeader.biPlanes = 1;
g_hConsoleFontFramebufferinfo->bmiHeader.biBitCount = 32;
g_hConsoleFontFramebufferinfo->bmiHeader.biCompression = BI_RGB;
g_hConsoleFontFramebufferinfo->bmiHeader.biClrUsed = 0;
// CREATE THE FRAME BUFFER DIB SECTION
g_hConsoleFontBitmap = CreateDIBSection(
hFrameDC,
g_hConsoleFontFramebufferinfo,
DIB_RGB_COLORS,
(LPVOID*)&g_hConsoleFontFramebits, 0, 0
);
SelectObject(g_hConsoleFontDC, g_hConsoleFontBitmap);
// DRAW THE SOURCE IMAGE INTO THE SOURCE BIT BUFFER
HDC tmpDC = CreateCompatibleDC(hFrameDC);
// Pre-scaled bitmap
HBITMAP tmpFont = LoadBitmap(g_hInstance, TEXT("IDB_DEBUG_FONT_7x8")); // Bitmap must be 112x128 as defined above
SelectObject(tmpDC, tmpFont);
BitBlt(g_hConsoleFontDC, 0, 0, 112, 128,
tmpDC, 0, 0,
SRCCOPY);
DeleteDC(tmpDC);
DeleteObject(tmpFont);
}
_ASSERT(g_hConsoleFontDC);
return g_hConsoleFontDC;
}
void StretchBltMemToFrameDC(void)
{
int nViewportCX, nViewportCY;
@ -594,7 +685,12 @@ void DebuggerSetColorFG( COLORREF nRGB )
g_hConsoleBrushFG = NULL;
}
g_hConsoleBrushFG = CreateSolidBrush( nRGB );
g_hConsoleBrushFG = CreateSolidBrush(nRGB);
g_cConsoleBrushFG_r = nRGB & 0xFF;
g_cConsoleBrushFG_g = (nRGB>>8) & 0xFF;
g_cConsoleBrushFG_b = (nRGB>>16) & 0xFF;
#else
SetTextColor( GetDebuggerMemDC(), nRGB );
#endif
@ -615,6 +711,12 @@ void DebuggerSetColorBG( COLORREF nRGB, bool bTransparent )
{
g_hConsoleBrushBG = CreateSolidBrush( nRGB );
}
// Transparency seems to be never used...
g_cConsoleBrushBG_r = nRGB & 0xFF;
g_cConsoleBrushBG_g = (nRGB >> 8) & 0xFF;
g_cConsoleBrushBG_b = (nRGB >> 16) & 0xFF;
#else
SetBkColor( GetDebuggerMemDC(), nRGB );
#endif
@ -630,8 +732,8 @@ void PrintGlyph( const int x, const int y, const int glyph )
int yDst = y;
// 16x8 chars in bitmap
int xSrc = (glyph & 0x0F) * CONSOLE_FONT_GRID_X;
int ySrc = (glyph >> 4) * CONSOLE_FONT_GRID_Y;
int xSrc = (glyph & 0x0F) *CONSOLE_FONT_GRID_X;
int ySrc = (glyph >> 4) *CONSOLE_FONT_GRID_Y;
// BUG #239 - (Debugger) Save debugger "text screen" to clipboard / file
// if( g_bDebuggerVirtualTextCapture )
@ -654,74 +756,21 @@ void PrintGlyph( const int x, const int y, const int glyph )
g_aDebuggerVirtualTextScreen[ row ][ col ] = glyph;
}
#if !DEBUG_FONT_NO_BACKGROUND_CHAR
// Background color
if (g_hConsoleBrushBG)
// Manual print of character. A lot faster than BitBlt, which must be avoided.
int index_src = (127-ySrc) * 16 * CONSOLE_FONT_GRID_X + xSrc; // font bitmap
int index_dst = (383-yDst) * 80 * CONSOLE_FONT_GRID_X + xDst; // debugger bitmap
for (int yy = 0; yy < CONSOLE_FONT_GRID_Y; yy++)
{
SelectObject( hDstDC, g_hConsoleBrushBG );
// Draw Background (solid pattern)
BitBlt(
hDstDC, // hdcDest
xDst, yDst, // nXDest, nYDest
CONSOLE_FONT_WIDTH, CONSOLE_FONT_HEIGHT, // nWidth, nHeight
g_hConsoleFontDC, // hdcSrc
0, CONSOLE_FONT_GRID_Y * 2, // nXSrc, nYSrc // FontTexture[2][0] = Solid (Filled) Space
PATCOPY // dwRop
);
for (int xx = 0; xx < CONSOLE_FONT_GRID_X; xx++)
{
char fontpx = g_hConsoleFontFramebits[index_src + xx].g; // Should be same for R/G/B anyway (greyscale)
g_pDebuggerMemFramebits[index_dst + xx].r = (g_cConsoleBrushBG_r & ~fontpx) | (g_cConsoleBrushFG_r & fontpx);
g_pDebuggerMemFramebits[index_dst + xx].g = (g_cConsoleBrushBG_g & ~fontpx) | (g_cConsoleBrushFG_g & fontpx);
g_pDebuggerMemFramebits[index_dst + xx].b = (g_cConsoleBrushBG_b & ~fontpx) | (g_cConsoleBrushFG_b & fontpx);
}
index_src -= 16 * CONSOLE_FONT_GRID_X;
index_dst -= 80 * CONSOLE_FONT_GRID_X;
}
#endif
// SelectObject( hDstDC, GetStockBrush( WHITE_BRUSH ) );
// http://kkow.net/etep/docs/rop.html
// P 1 1 1 1 0 0 0 0 (Pen/Pattern)
// S 1 1 0 0 1 1 0 0 (Source)
// D 1 0 1 0 1 0 1 0 (Destination)
// =================
// 0 0 1 0 0 0 1 0 0x22 DSna
// 1 1 1 0 1 0 1 0 0xEA DPSao
// Black = Transparent (DC Background)
// White = Opaque (DC Text color)
#if DEBUG_FONT_ROP
SelectObject( hDstDC, g_hConsoleBrushFG );
BitBlt(
hDstDC,
xDst, yDst,
DEBUG_FONT_WIDTH, DEBUG_FONT_HEIGHT,
g_hDebugFontDC,
xSrc, ySrc,
aROP4[ iRop4 ]
);
#else
// Use inverted source as mask (AND)
// D & ~S -> DSna
BitBlt(
hDstDC,
xDst, yDst,
CONSOLE_FONT_WIDTH, CONSOLE_FONT_HEIGHT,
g_hConsoleFontDC,
xSrc, ySrc,
DSna
);
SelectObject( hDstDC, g_hConsoleBrushFG );
// Use Source as mask to make color Pattern mask (AND), then apply to dest (OR)
// D | (P & S) -> DPSao
BitBlt(
hDstDC,
xDst, yDst,
CONSOLE_FONT_WIDTH, CONSOLE_FONT_HEIGHT,
g_hConsoleFontDC,
xSrc, ySrc,
DPSao
);
#endif
SelectObject( hDstDC, GetStockObject(NULL_BRUSH) );
}
@ -814,7 +863,7 @@ int PrintText ( const char * pText, RECT & rRect )
int nLen = strlen( pText );
#if !DEBUG_FONT_NO_BACKGROUND_TEXT
FillRect( GetDebuggerMemDC(), &rRect, g_hConsoleBrushBG );
FillBackground(rRect.left, rRect.top, rRect.right, rRect.bottom);
#endif
DebuggerPrint( rRect.left, rRect.top, pText );
@ -825,12 +874,37 @@ int PrintText ( const char * pText, RECT & rRect )
void PrintTextColor ( const conchar_t *pText, RECT & rRect )
{
#if !DEBUG_FONT_NO_BACKGROUND_TEXT
FillRect( GetDebuggerMemDC(), &rRect, g_hConsoleBrushBG );
FillBackground(rRect.left, rRect.top, rRect.right, rRect.bottom);
#endif
DebuggerPrintColor( rRect.left, rRect.top, pText );
}
//===========================================================================
void FillBackground(long left, long top, long right, long bottom)
{
long index_dst = (384-bottom) * 80 * CONSOLE_FONT_GRID_X;
for (long x = left; x < right; x++)
{
g_pDebuggerMemFramebits[index_dst + x].r = g_cConsoleBrushBG_r;
g_pDebuggerMemFramebits[index_dst + x].g = g_cConsoleBrushBG_g;
g_pDebuggerMemFramebits[index_dst + x].b = g_cConsoleBrushBG_b;
}
if (top != bottom)
{
bgra_t* src = g_pDebuggerMemFramebits + (index_dst + left);
bgra_t* dst = src + (80 * CONSOLE_FONT_GRID_X);
size_t size = (right - left) * sizeof(bgra_t);
for (int i = 0; i < bottom - top - 1; i++)
{
memcpy((void*)dst, (void*)src, size);
dst += 80 * CONSOLE_FONT_GRID_X ;
}
}
}
// Updates the horizontal cursor
//===========================================================================
int PrintTextCursorX ( const char * pText, RECT & rRect )

21
source/Debugger/Debugger_Display.h
View File

@ -7,19 +7,9 @@
#define DEBUG_APPLE_FONT 0
// Win32 Debugger Font
// 1 = Use Debugger_Font.BMP (7x8)
// 0 = Use CHARSET40.bmp (fg & bg colors aren't proper)
#define APPLE_FONT_NEW 1
#if APPLE_FONT_NEW
#define APPLE_FONT_BITMAP_PADDED 0
#else
#define APPLE_FONT_BITMAP_PADDED 1
#endif
enum ConsoleFontSize_e
{
#if APPLE_FONT_NEW
// Grid Alignment
CONSOLE_FONT_GRID_X = 7,
CONSOLE_FONT_GRID_Y = 8,
@ -27,14 +17,7 @@
// Font Char Width/Height in pixels
CONSOLE_FONT_WIDTH = 7,
CONSOLE_FONT_HEIGHT = 8,
#else
CONSOLE_FONT_GRID_X = 8,
CONSOLE_FONT_GRID_Y = 8,
// Font Char Width/Height in pixels
CONSOLE_FONT_WIDTH = 7,
CONSOLE_FONT_HEIGHT = 8,
#endif
};
extern HBRUSH g_hConsoleBrushFG;
@ -57,6 +40,8 @@
void DebuggerSetColorFG( COLORREF nRGB );
void DebuggerSetColorBG( COLORREF nRGB, bool bTransparent = false );
void FillBackground(long left, long top, long right, long bottom);
void PrintGlyph ( const int x, const int y, const int iChar );
int PrintText ( const char * pText, RECT & rRect );
int PrintTextCursorX( const char * pText, RECT & rRect );
@ -86,6 +71,8 @@
extern HDC GetDebuggerMemDC(void);
extern void ReleaseDebuggerMemDC(void);
extern void StretchBltMemToFrameDC(void);
extern HDC GetConsoleFontDC(void);
extern void ReleaseConsoleFontDC(void);
enum DebugVirtualTextScreen_e
{