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snes9x/win32/win32_display.cpp

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/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
/* win32_display.cpp
Contains most of the display related functions of the win32 port.
Delegates relevant function calls to the currently selected IS9xDisplayOutput object.
*/
#include "../snes9x.h"
#include "../ppu.h"
#include "../font.h"
#include "wsnes9x.h"
#include "win32_display.h"
#include "CDirect3D.h"
#if DIRECTDRAW_SUPPORT
#include "CDirectDraw.h"
#endif
#include "COpenGL.h"
#include "IS9xDisplayOutput.h"
#include "../filter/hq2x.h"
#include "../filter/2xsai.h"
#include "../apu/apu.h"
// available display output methods
CDirect3D Direct3D;
#if DIRECTDRAW_SUPPORT
CDirectDraw DirectDraw;
#endif
COpenGL OpenGL;
SSurface Src = {0};
extern BYTE *ScreenBufferBlend;
// Interface used to access the display output
IS9xDisplayOutput *S9xDisplayOutput=&Direct3D;
#ifndef max
#define max(a,b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef min
#define min(a,b) (((a) < (b)) ? (a) : (b))
#endif
bool8 S9xDeinitUpdate (int, int);
void DoAVIVideoFrame();
// cut off both top and bottom if overscan is disabled and game outputs extended height,
// center image if overscan is enabled and game outputs regular height
static void CheckOverscanOffset()
{
int lines_to_skip = 0;
if (!GUI.HeightExtend)
{
if (Src.Height == SNES_HEIGHT_EXTENDED)
lines_to_skip = 7;
else if (Src.Height == SNES_HEIGHT_EXTENDED << 1)
lines_to_skip = 14;
}
else
{
if (Src.Height == SNES_HEIGHT)
lines_to_skip = -8;
else if (Src.Height == SNES_HEIGHT << 1)
lines_to_skip = -16;
}
Src.Surface = (BYTE*)(GFX.Screen + lines_to_skip * (int)GFX.RealPPL);
}
/* WinRefreshDisplay
repeats the last rendered frame
*/
void WinRefreshDisplay(void)
{
if(!Src.Width)
return;
CheckOverscanOffset();
SelectRenderMethod ();
S9xDisplayOutput->Render(Src);
GUI.FlipCounter++;
}
void WinChangeWindowSize(unsigned int newWidth, unsigned int newHeight)
{
S9xDisplayOutput->ChangeRenderSize(newWidth,newHeight);
}
/* WinDisplayReset
initializes the currently selected display output and
reinitializes the core graphics rendering
-----
returns true if successful, false otherwise
*/
bool WinDisplayReset(void)
{
S9xDisplayOutput->DeInitialize();
switch(GUI.outputMethod) {
default:
case DIRECT3D:
S9xDisplayOutput = &Direct3D;
break;
#if DIRECTDRAW_SUPPORT
case DIRECTDRAW:
S9xDisplayOutput = &DirectDraw;
break;
#endif
case OPENGL:
S9xDisplayOutput = &OpenGL;
break;
}
if(S9xDisplayOutput->Initialize(GUI.hWnd)) {
S9xGraphicsDeinit();
S9xSetWinPixelFormat ();
S9xGraphicsInit();
return true;
} else {
MessageBox (GUI.hWnd, Languages[ GUI.Language].errInitDD, TEXT("Snes9X - Display Failure"), MB_OK | MB_ICONSTOP);
return false;
}
}
void WinDisplayApplyChanges()
{
S9xDisplayOutput->ApplyDisplayChanges();
}
RECT CalculateDisplayRect(unsigned int sourceWidth,unsigned int sourceHeight,
unsigned int displayWidth,unsigned int displayHeight)
{
double xFactor;
double yFactor;
double minFactor;
double renderWidthCalc,renderHeightCalc;
int hExtend = GUI.HeightExtend ? SNES_HEIGHT_EXTENDED : SNES_HEIGHT;
double snesAspect = (double)GUI.AspectWidth/hExtend;
RECT drawRect;
if(GUI.Stretch) {
if(GUI.AspectRatio) {
if (GUI.IntegerScaling && sourceHeight > 0 && sourceHeight <= displayHeight && (int)(sourceHeight * snesAspect) <= displayWidth) {
int h;
for (h = sourceHeight * 2; h <= displayHeight && (int)(h * snesAspect) <= displayWidth; h += sourceHeight) {}
h -= sourceHeight;
drawRect.right = (LONG)(h * snesAspect);
drawRect.bottom = h;
} else {
//fix for hi-res images with FILTER_NONE
//where we need to correct the aspect ratio
renderWidthCalc = (double)sourceWidth;
renderHeightCalc = (double)sourceHeight;
if (renderWidthCalc / renderHeightCalc > snesAspect)
renderWidthCalc = renderHeightCalc * snesAspect;
else if (renderWidthCalc / renderHeightCalc < snesAspect)
renderHeightCalc = renderWidthCalc / snesAspect;
xFactor = (double)displayWidth / renderWidthCalc;
yFactor = (double)displayHeight / renderHeightCalc;
minFactor = xFactor < yFactor ? xFactor : yFactor;
drawRect.right = (LONG)(renderWidthCalc * minFactor);
drawRect.bottom = (LONG)(renderHeightCalc * minFactor);
}
drawRect.left = (displayWidth - drawRect.right) / 2;
drawRect.top = (displayHeight - drawRect.bottom) / 2;
drawRect.right += drawRect.left;
drawRect.bottom += drawRect.top;
} else {
drawRect.top = 0;
drawRect.left = 0;
drawRect.right = displayWidth;
drawRect.bottom = displayHeight;
}
} else {
drawRect.left = ((int)(displayWidth) - (int)sourceWidth) / 2;
drawRect.top = ((int)(displayHeight) - (int)sourceHeight) / 2;
if(!GUI.AlwaysCenterImage) {
if(drawRect.left < 0) drawRect.left = 0;
if(drawRect.top < 0) drawRect.top = 0;
}
drawRect.right = drawRect.left + sourceWidth;
drawRect.bottom = drawRect.top + sourceHeight;
}
return drawRect;
}
// we no longer support 8bit modes - no palette necessary
void S9xSetPalette( void)
{
return;
}
bool8 S9xInitUpdate (void)
{
return (TRUE);
}
// only necessary for avi recording
// TODO: check if this can be removed
bool8 S9xContinueUpdate(int Width, int Height)
{
// called every other frame during interlace
Src.Width = Width;
if(Height%SNES_HEIGHT)
Src.Height = Height;
else
{
if(Height==SNES_HEIGHT)
Src.Height=SNES_HEIGHT_EXTENDED;
else Src.Height=SNES_HEIGHT_EXTENDED<<1;
}
Src.Pitch = GFX.Pitch;
Src.Surface = (BYTE*)GFX.Screen;
// avi writing
DoAVIVideoFrame();
return true;
}
// do the actual rendering of a frame
bool8 S9xDeinitUpdate (int Width, int Height)
{
Src.Width = Width;
Src.Height = Height;
Src.Pitch = GFX.Pitch;
CheckOverscanOffset();
// avi writing
DoAVIVideoFrame();
// Clear some of the old SNES rendered image
// when the resolution becomes lower in x or y,
// otherwise the image processors (filters) might access
// some of the old rendered data at the edges.
{
static int LastWidth = 0;
static int LastHeight = 0;
if (Width < LastWidth)
{
const int hh = max(LastHeight, Height);
for (int i = 0; i < hh; i++)
memset (GFX.Screen + i * (GFX.Pitch>>1) + Width*1, 0, 4);
}
if (Height < LastHeight)
{
const int ww = max(LastWidth, Width);
for (int i = Height; i < LastHeight ; i++)
memset (GFX.Screen + i * (GFX.Pitch>>1), 0, ww * 2);
// also old clear extended height stuff from drawing surface
if((int)Src.Height > Height)
for (int i = Height; i < (int)Src.Height ; i++)
memset (Src.Surface + i * Src.Pitch, 0, Src.Pitch);
}
LastWidth = Width;
LastHeight = Height;
}
WinRefreshDisplay();
return (true);
}
/* S9xSetWinPixelFormat
sets default settings and calls the appropriate display object
*/
void S9xSetWinPixelFormat ()
{
S9xSetRenderPixelFormat (RGB565);
GUI.NeedDepthConvert = FALSE;
GUI.DepthConverted = !GUI.NeedDepthConvert;
S9xBlit2xSaIFilterDeinit();
S9xBlitHQ2xFilterDeinit();
S9xDisplayOutput->SetSnes9xColorFormat();
}
char *ReadShaderFileContents(const TCHAR *filename)
{
HANDLE hFile;
DWORD size;
DWORD bytesRead;
char *contents;
hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN , 0);
if(hFile == INVALID_HANDLE_VALUE){
return NULL;
}
size = GetFileSize(hFile,NULL);
contents = new char[size+1];
if(!ReadFile(hFile,contents,size,&bytesRead,NULL)) {
CloseHandle(hFile);
delete[] contents;
return NULL;
}
CloseHandle(hFile);
contents[size] = '\0';
return contents;
}
void ReduceToPath(TCHAR *filename)
{
for (int i = lstrlen(filename); i >= 0; i--) {
if (IS_SLASH(filename[i])) {
filename[i] = TEXT('\0');
break;
}
}
}
// TODO: abstract the following functions in some way - only necessary for directdraw
/* DirectDraw only begin */
void SwitchToGDI()
{
#if DIRECTDRAW_SUPPORT
if(GUI.outputMethod!=DIRECTDRAW)
return;
IPPU.ColorsChanged = true;
DirectDraw.lpDD->FlipToGDISurface();
GUI.FlipCounter = 0;
DirectDraw.lpDDSPrimary2->SetPalette (NULL);
#endif
}
static void ClearSurface (LPDIRECTDRAWSURFACE2 lpDDSurface)
{
#if DIRECTDRAW_SUPPORT
DDBLTFX fx;
memset (&fx, 0, sizeof (fx));
fx.dwSize = sizeof (fx);
while (lpDDSurface->Blt (NULL, DirectDraw.lpDDSPrimary2, NULL, DDBLT_WAIT, NULL) == DDERR_SURFACELOST)
lpDDSurface->Restore ();
#endif
}
void UpdateBackBuffer()
{
#if DIRECTDRAW_SUPPORT
if (GUI.outputMethod==DIRECTDRAW && GUI.FullScreen)
{
SwitchToGDI();
DDBLTFX fx;
memset (&fx, 0, sizeof (fx));
fx.dwSize = sizeof (fx);
while (DirectDraw.lpDDSPrimary2->Blt (NULL, NULL, NULL, DDBLT_WAIT | DDBLT_COLORFILL, &fx) == DDERR_SURFACELOST)
DirectDraw.lpDDSPrimary2->Restore ();
if (GetMenu (GUI.hWnd) != NULL)
DrawMenuBar (GUI.hWnd);
GUI.FlipCounter = 0;
DDSCAPS caps;
caps.dwCaps = DDSCAPS_BACKBUFFER;
LPDIRECTDRAWSURFACE2 pDDSurface;
if (DirectDraw.lpDDSPrimary2->GetAttachedSurface (&caps, &pDDSurface) == DD_OK &&
pDDSurface != NULL)
{
ClearSurface (pDDSurface);
DirectDraw.lpDDSPrimary2->Flip (NULL, GUI.Vsync?DDFLIP_WAIT:DDFLIP_NOVSYNC);
while (DirectDraw.lpDDSPrimary2->GetFlipStatus (DDGFS_ISFLIPDONE) != DD_OK)
Sleep (0);
if(DirectDraw.doubleBuffered)
ClearSurface (pDDSurface);
}
}
else
{
if (GetMenu( GUI.hWnd) != NULL)
DrawMenuBar (GUI.hWnd);
}
#endif
}
void RestoreGUIDisplay ()
{
#if DIRECTDRAW_SUPPORT
if(GUI.outputMethod!=DIRECTDRAW)
return;
S9xSetPause (PAUSE_RESTORE_GUI);
if (GUI.FullScreen &&
(GUI.FullscreenMode.width < 640 || GUI.FullscreenMode.height < 400) &&
!DirectDraw.SetDisplayMode (640, 480, 1, 0, 60, !GUI.FullScreen, false))
{
MessageBox (GUI.hWnd, Languages[ GUI.Language].errModeDD, TEXT("Snes9X - DirectDraw(1)"), MB_OK | MB_ICONSTOP);
S9xClearPause (PAUSE_RESTORE_GUI);
return;
}
SwitchToGDI();
S9xClearPause (PAUSE_RESTORE_GUI);
#endif
}
void RestoreSNESDisplay ()
{
#if DIRECTDRAW_SUPPORT
if(GUI.outputMethod!=DIRECTDRAW)
return;
if (!DirectDraw.SetFullscreen(GUI.FullScreen))
{
MessageBox (GUI.hWnd, Languages[ GUI.Language].errModeDD, TEXT("Snes9X - DirectDraw(4)"), MB_OK | MB_ICONSTOP);
return;
}
UpdateBackBuffer();
#endif
}
/* DirectDraw only end */
void SaveMainWinPos()
{
WINDOWPLACEMENT wndPlacement={0};
wndPlacement.length = sizeof(WINDOWPLACEMENT);
GetWindowPlacement(GUI.hWnd,&wndPlacement);
GUI.window_maximized = wndPlacement.showCmd == SW_SHOWMAXIMIZED;
if(!GUI.FullScreen && !GUI.EmulatedFullscreen)
GUI.window_size = wndPlacement.rcNormalPosition;
}
void RestoreMainWinPos()
{
WINDOWPLACEMENT wndPlacement={0};
wndPlacement.length = sizeof(WINDOWPLACEMENT);
wndPlacement.showCmd = GUI.window_maximized?SW_SHOWMAXIMIZED:SW_SHOWNORMAL;
wndPlacement.rcNormalPosition = GUI.window_size;
SetWindowPlacement(GUI.hWnd,&wndPlacement);
}
/* ToggleFullScreen
switches between fullscreen and window mode and saves the window position
if EmulateFullscreen is set we simply create a borderless window that spans the screen
*/
void ToggleFullScreen ()
{
S9xSetPause (PAUSE_TOGGLE_FULL_SCREEN);
SaveMainWinPos();
if(GUI.EmulateFullscreen) {
HMONITOR hm;
MONITORINFO mi;
GUI.EmulatedFullscreen = !GUI.EmulatedFullscreen;
if(GUI.EmulatedFullscreen) {
if(GetMenu(GUI.hWnd)!=NULL)
SetMenu(GUI.hWnd,NULL);
SetWindowLongPtr (GUI.hWnd, GWL_STYLE, WS_POPUP|WS_VISIBLE);
hm = MonitorFromWindow(GUI.hWnd,MONITOR_DEFAULTTONEAREST);
mi.cbSize = sizeof(mi);
GetMonitorInfo(hm,&mi);
SetWindowPos (GUI.hWnd, HWND_TOP, mi.rcMonitor.left, mi.rcMonitor.top, mi.rcMonitor.right - mi.rcMonitor.left, mi.rcMonitor.bottom - mi.rcMonitor.top, SWP_DRAWFRAME|SWP_FRAMECHANGED);
} else {
SetWindowLongPtr( GUI.hWnd, GWL_STYLE, WS_POPUPWINDOW|WS_CAPTION|
WS_THICKFRAME|WS_VISIBLE|WS_MINIMIZEBOX|WS_MAXIMIZEBOX);
SetMenu(GUI.hWnd,GUI.hMenu);
SetWindowPos (GUI.hWnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_DRAWFRAME|SWP_FRAMECHANGED);
RestoreMainWinPos();
}
} else {
GUI.FullScreen = !GUI.FullScreen;
if(GUI.FullScreen) {
if(GetMenu(GUI.hWnd)!=NULL)
SetMenu(GUI.hWnd,NULL);
SetWindowLongPtr (GUI.hWnd, GWL_STYLE, WS_POPUP|WS_VISIBLE);
SetWindowPos (GUI.hWnd, HWND_TOPMOST, 0, 0, GUI.FullscreenMode.width, GUI.FullscreenMode.height, SWP_DRAWFRAME|SWP_FRAMECHANGED);
if(!S9xDisplayOutput->SetFullscreen(true))
GUI.FullScreen = false;
}
if(!GUI.FullScreen) {
SetWindowLongPtr( GUI.hWnd, GWL_STYLE, WS_POPUPWINDOW|WS_CAPTION|
WS_THICKFRAME|WS_VISIBLE|WS_MINIMIZEBOX|WS_MAXIMIZEBOX);
SetMenu(GUI.hWnd,GUI.hMenu);
S9xDisplayOutput->SetFullscreen(false);
SetWindowPos (GUI.hWnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_DRAWFRAME|SWP_FRAMECHANGED);
RestoreMainWinPos();
}
if (GUI.AutomaticInputRate)
{
int rate = WinGetAutomaticInputRate();
if (rate)
{
Settings.SoundInputRate = rate;
S9xUpdateDynamicRate(1, 2);
}
}
S9xGraphicsDeinit();
S9xSetWinPixelFormat ();
S9xInitUpdate();
S9xGraphicsInit();
}
IPPU.RenderThisFrame = true;
S9xClearPause (PAUSE_TOGGLE_FULL_SCREEN);
}
/* S9xOpenSoundDevice
ennumerates the available display modes of the currently selected output
*/
void WinEnumDisplayModes(std::vector<dMode> *modeVector)
{
S9xDisplayOutput->EnumModes(modeVector);
}
double WinGetRefreshRate(void)
{
typedef LONG(WINAPI *PGDCBS) (UINT32, UINT32 *, UINT32 *);
typedef LONG(WINAPI *PQDC) (UINT32, UINT32*, DISPLAYCONFIG_PATH_INFO *, UINT32*, DISPLAYCONFIG_MODE_INFO *, DISPLAYCONFIG_TOPOLOGY_ID *);
static PGDCBS pGDCBS = NULL;
static PQDC pQDC = NULL;
static int firstrun = 1;
if (firstrun)
{
HMODULE user32 = GetModuleHandleA("user32.dll");
pQDC = (PQDC) GetProcAddress(user32, "QueryDisplayConfig");
pGDCBS = (PGDCBS) GetProcAddress(user32, "GetDisplayConfigBufferSizes");
firstrun = 0;
}
double refreshRate = 0.0;
if (!pGDCBS || !pQDC)
return refreshRate;
OSVERSIONINFO ovi;
DISPLAYCONFIG_TOPOLOGY_ID topologyID;
unsigned int numPathArrayElements = 0;
unsigned int numModeInfoArrayElements = 0;
DISPLAYCONFIG_PATH_INFO * pathInfoArray = NULL;
DISPLAYCONFIG_MODE_INFO * modeInfoArray = NULL;
int result = 0;
ovi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx(&ovi))
return refreshRate;
if (ovi.dwMajorVersion < 6 || (ovi.dwMajorVersion == 6 && ovi.dwMinorVersion < 1))
return refreshRate;
result = pGDCBS(QDC_DATABASE_CURRENT,
&numPathArrayElements,
&numModeInfoArrayElements);
if (result != ERROR_SUCCESS)
return refreshRate;
pathInfoArray = (DISPLAYCONFIG_PATH_INFO *)
malloc(sizeof(DISPLAYCONFIG_PATH_INFO) * numPathArrayElements);
modeInfoArray = (DISPLAYCONFIG_MODE_INFO *)
malloc(sizeof(DISPLAYCONFIG_MODE_INFO) * numModeInfoArrayElements);
result = pQDC(QDC_DATABASE_CURRENT,
&numPathArrayElements,
pathInfoArray,
&numModeInfoArrayElements,
modeInfoArray,
&topologyID);
if (result == ERROR_SUCCESS && numPathArrayElements >= 1)
{
refreshRate = (float)pathInfoArray[0].targetInfo.refreshRate.Numerator /
pathInfoArray[0].targetInfo.refreshRate.Denominator;
}
free(modeInfoArray);
free(pathInfoArray);
return refreshRate;
}
int WinGetAutomaticInputRate(void)
{
double refreshRate = WinGetRefreshRate();
if (refreshRate == 0.0)
return 0;
// Try for a close multiple of 60hz
if (refreshRate > 119.0 && refreshRate < 121.0)
refreshRate /= 2.0;
if (refreshRate > 179.0 && refreshRate < 181.0)
refreshRate /= 3.0;
if (refreshRate > 239.0 && refreshRate < 241.0)
refreshRate /= 4.0;
double newInputRate = refreshRate * 32040.0 / 60.09881389744051 + 0.5;
if (newInputRate > 32040.0 * 1.05 || newInputRate < 32040.0 * 0.95)
newInputRate = 0.0;
return (int)newInputRate;
}
GLSLShader *WinGetActiveGLSLShader()
{
return OpenGL.GetActiveShader();
}
/* Depth conversion functions begin */
void Convert16To24 (SSurface *src, SSurface *dst, RECT *srect)
{
const int height = srect->bottom - srect->top;
const int width = srect->right - srect->left;
const int offset1 = srect->top * src->Pitch + srect->left * 2;
const int offset2 = ((dst->Height - height) >> 1) * dst->Pitch + ((dst->Width - width) >> 1) * 3;
const int snesWidth = src->Width;
const int snesHeight = src->Height;
const bool doubledX = (snesWidth >= width*2) ? true : false;
const bool doubledY = (snesHeight >= height*2) ? true : false;
for (int y = 0; y < height; y++)
{
uint16 *s = (uint16 *) ((uint8 *) src->Surface + (doubledY ? y*2 : y) * src->Pitch + offset1);
uint8 *d = ((uint8 *) dst->Surface + y * dst->Pitch + offset2);
#define Interp(c1, c2) \
(c1 == c2) ? c1 : \
(((((c1 & 0x07E0) + (c2 & 0x07E0)) >> 1) & 0x07E0) + \
((((c1 & 0xF81F) + (c2 & 0xF81F)) >> 1) & 0xF81F))
if(y >= snesHeight)
{
// beyond SNES image - make the row black
memset(d, 0, width*3);
}
else
#ifdef LSB_FIRST
if (GUI.RedShift < GUI.BlueShift)
#else
if (GUI.RedShift > GUI.BlueShift)
#endif
{
// Order is RGB
if(!doubledX)
{
for (int x = 0; x < width; x++)
{
uint32 pixel = *s++;
*(d + 0) = (pixel >> (11 - 3)) & 0xf8;
*(d + 1) = (pixel >> (6 - 3)) & 0xf8;
*(d + 2) = (pixel & 0x1f) << 3;
d += 3;
}
}
else // high-res x, blend:
{
for (int x = 0; x < width; x++)
{
uint32 pixel = Interp(s[0],s[1]);
s += 2;
*(d + 0) = (pixel >> (11 - 3)) & 0xf8;
*(d + 1) = (pixel >> (6 - 3)) & 0xf8;
*(d + 2) = (pixel & 0x1f) << 3;
d += 3;
}
}
}
else
{
// Order is BGR
if(!doubledX)
{
for (int x = 0; x < width; x++)
{
uint32 pixel = *s++;
*(d + 0) = (pixel & 0x1f) << 3;
*(d + 1) = (pixel >> (6 - 3)) & 0xf8;
*(d + 2) = (pixel >> (11 - 3)) & 0xf8;
d += 3;
}
}
else // high-res x, blend:
{
for (int x = 0; x < width; x++)
{
uint32 pixel = Interp(s[0],s[1]);
s += 2;
*(d + 0) = (pixel & 0x1f) << 3;
*(d + 1) = (pixel >> (6 - 3)) & 0xf8;
*(d + 2) = (pixel >> (11 - 3)) & 0xf8;
d += 3;
}
}
}
}
}
void Convert16To32 (SSurface *src, SSurface *dst, RECT *srect)
{
int height = srect->bottom - srect->top;
int width = srect->right - srect->left;
int offset1 = srect->top * src->Pitch + srect->left * 2;
int offset2 = 0;//((dst->Height - height) >> 1) * dst->Pitch +
//((dst->Width - width) >> 1) * sizeof (uint32);
for (int y = 0; y < height; y++)
{
uint16 *s = (uint16 *) ((uint8 *) src->Surface + y * src->Pitch + offset1);
uint32 *d = (uint32 *) ((uint8 *) dst->Surface +
y * dst->Pitch + offset2);
for (int x = 0; x < width; x++)
{
uint32 pixel = *s++;
*d++ = (((pixel >> 11) & 0x1f) << GUI.RedShift) |
(((pixel >> 6) & 0x1f) << GUI.GreenShift) |
((pixel & 0x1f) << GUI.BlueShift);
}
}
}
void ConvertDepth (SSurface *src, SSurface *dst, RECT *srect)
{
// SNES image has been rendered in 16-bit, RGB565 format
switch (GUI.ScreenDepth)
{
case 15: // is this right?
case 16:
break;
case 24:
Convert16To24 (src, dst, srect);
break;
case 32:
Convert16To32 (src, dst, srect);
break;
}
}
/* Depth conversion functions end */
/* The rest of the functions are recreations of the core string display functions with additional scaling.
They provide the possibility to render the messages into a surface other than the core GFX.Screen.
*/
void WinDisplayStringFromBottom (const char *string, int linesFromBottom, int pixelsFromLeft, bool allowWrap)
{
if(Settings.StopEmulation)
return;
if(Settings.AutoDisplayMessages) {
WinSetCustomDisplaySurface((void *)GFX.Screen, GFX.RealPPL, IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight, 1);
WinDisplayStringInBuffer<uint16>(string, linesFromBottom, pixelsFromLeft, allowWrap);
} else
if(GUI.ScreenDepth == 32) {
WinDisplayStringInBuffer<uint32>(string, linesFromBottom, pixelsFromLeft, allowWrap);
} else {
WinDisplayStringInBuffer<uint16>(string, linesFromBottom, pixelsFromLeft, allowWrap);
}
}
static int font_width = 8, font_height = 9;
static void *displayScreen;
int displayPpl, displayWidth, displayHeight, displayScale, fontwidth_scaled, fontheight_scaled;
void WinSetCustomDisplaySurface(void *screen, int ppl, int width, int height, int scale)
{
displayScreen=screen;
displayPpl=ppl;
displayWidth=width;
displayHeight=height;
displayScale=max(1,width/IPPU.RenderedScreenWidth);
fontwidth_scaled=font_width*displayScale;
fontheight_scaled=font_height*displayScale;
}
template<typename screenPtrType>
void WinDisplayChar (screenPtrType *s, uint8 c)
{
int h, w;
int line = ((c - 32) >> 4) * fontheight_scaled;
int offset = ((c - 32) & 15) * fontwidth_scaled;
if (GUI.filterMessagFont && (displayScale == 2 || displayScale == 3))
{
if (displayScale == 2) {
for (h = 0; h < fontheight_scaled; h += 2, line += 2, s += 2 * displayPpl - fontwidth_scaled)
for (w = 0; w < fontwidth_scaled; w += 2, s += 2)
FontPixToScreenEPX((offset + w) / 2, line / 2, s);
}
else if (displayScale == 3) {
for (h = 0; h < fontheight_scaled; h += 3, line += 3, s += 3 * displayPpl - fontwidth_scaled)
for (w = 0; w < fontwidth_scaled; w += 3, s += 3)
FontPixToScreenEPXSimple3((offset + w) / 3, line / 3, s);
}
}
else
{
for(h=0; h<fontheight_scaled; h++, line++, s+=displayPpl-fontwidth_scaled)
for(w=0; w<fontwidth_scaled; w++, s++)
FontPixToScreen(font [(line)/displayScale] [(offset + w)/displayScale], s);
}
}
static inline void FontPixToScreen(char p, uint16 *s)
{
if(p == '#')
{
*s = Settings.DisplayColor;
}
else if(p == '.')
{
static const uint16 black = BUILD_PIXEL(0,0,0);
*s = black;
}
}
static inline void FontPixToScreen(char p, uint32 *s)
{
#define CONVERT_16_TO_32(pixel) \
(((((pixel) >> 11) ) << /*RedShift+3*/ 19) | \
((((pixel) >> 6) & 0x1f) << /*GreenShift+3*/11) | \
(((pixel) & 0x1f) << /*BlueShift+3*/ 3))
if(p == '#')
{
*s = CONVERT_16_TO_32(Settings.DisplayColor);
}
else if(p == '.')
{
static const uint32 black = CONVERT_16_TO_32(BUILD_PIXEL(0,0,0));
*s = black;
}
}
#define CHOOSE(c1) ((c1=='#'||X=='#') ? '#' : ((c1=='.'||X=='.') ? '.' : c1))
template<typename screenPtrType>
static inline void FontPixToScreenEPX(int x, int y, screenPtrType *s)
{
const char X = font[y][x]; // E D H
const char A = x>0 ?font[y][x-1]:' '; // A X C
const char C = x<143?font[y][x+1]:' '; // F B G
if (A != C)
{
const char D = y>0 ?font[y-1][x]:' ';
const char B = y<125?font[y+1][x]:' ';
if (B != D)
{
FontPixToScreen((D == A) ? CHOOSE(D) : X, s);
FontPixToScreen((C == D) ? CHOOSE(C) : X, s+1);
FontPixToScreen((A == B) ? CHOOSE(A) : X, s+displayPpl);
FontPixToScreen((B == C) ? CHOOSE(B) : X, s+displayPpl+1);
return;
}
}
FontPixToScreen(X, s);
FontPixToScreen(X, s+1);
FontPixToScreen(X, s+displayPpl);
FontPixToScreen(X, s+displayPpl+1);
}
#undef CHOOSE
#define CHOOSE(c1) ((X=='#') ? '#' : c1)
template<typename screenPtrType>
inline void FontPixToScreenEPXSimple3(int x, int y, screenPtrType *s)
{
const char X = font[y][x]; // E D H
const char A = x>0 ?font[y][x-1]:' '; // A X C
const char C = x<143?font[y][x+1]:' '; // F B G
const char D = y>0 ?font[y-1][x]:' ';
const char B = y<125?font[y+1][x]:' ';
const bool XnE = y>0 &&x>0 ?(X != font[y-1][x-1]):X!=' ';
const bool XnF = y<125&&x<143?(X != font[y+1][x-1]):X!=' ';
const bool XnG = y<125&&x>0 ?(X != font[y+1][x+1]):X!=' ';
const bool XnH = y>0 &&x<143?(X != font[y-1][x+1]):X!=' ';
const bool DA = D == A && (XnE || CHOOSE(D)!=X);
const bool AB = A == B && (XnF || CHOOSE(A)!=X);
const bool BC = B == C && (XnG || CHOOSE(B)!=X);
const bool CD = C == D && (XnH || CHOOSE(C)!=X);
FontPixToScreen(DA ? A : X, s);
FontPixToScreen(X, s+1);
FontPixToScreen(CD ? C : X, s+2);
FontPixToScreen(X, s+displayPpl);
FontPixToScreen(X, s+displayPpl+1);
FontPixToScreen(X, s+displayPpl+2);
FontPixToScreen(AB ? A : X, s+displayPpl+displayPpl);
FontPixToScreen(X, s+displayPpl+displayPpl+1);
FontPixToScreen(BC ? C : X, s+displayPpl+displayPpl+2);
}
#undef CHOOSE
template<typename screenPtrType>
void WinDisplayStringInBuffer (const char *string, int linesFromBottom, int pixelsFromLeft, bool allowWrap)
{
if (linesFromBottom <= 0)
linesFromBottom = 1;
screenPtrType *dst = (screenPtrType *)displayScreen + (displayHeight - fontheight_scaled * linesFromBottom) * displayPpl + (int)(pixelsFromLeft * (float)displayWidth/IPPU.RenderedScreenWidth);
int len = strlen(string);
int max_chars = displayWidth / (fontwidth_scaled - displayScale);
int char_count = 0;
for (int i = 0 ; i < len ; i++, char_count++)
{
if (char_count >= max_chars || (uint8) string[i] < 32)
{
if (!allowWrap)
break;
dst += fontheight_scaled * displayPpl - (fontwidth_scaled - displayScale) * max_chars;
if (dst >= (screenPtrType *)displayScreen + displayHeight * displayPpl)
break;
char_count -= max_chars;
}
if ((uint8) string[i] < 32)
continue;
WinDisplayChar(dst, string[i]);
dst += fontwidth_scaled - displayScale;
}
}
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