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Clean-up & documented: CopySource()
Clean-up: UpdateHiResCell()
This commit is contained in:
mpohoreski
parent
914d769bb4
commit
be0a105619
@ -134,13 +134,13 @@ enum Color_Palette_Index_e
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//#define SRCOFFS_DHIRES (SRCOFFS_HIRES + 512)
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//#define SRCOFFS_TOTAL (SRCOFFS_DHIRES + 2560)
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const int SRCOFFS_40COL = 0;
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const int SRCOFFS_IIPLUS = (SRCOFFS_40COL + 256);
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const int SRCOFFS_80COL = (SRCOFFS_IIPLUS + 256);
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const int SRCOFFS_LORES = (SRCOFFS_80COL + 128);
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const int SRCOFFS_HIRES = (SRCOFFS_LORES + 16);
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const int SRCOFFS_DHIRES = (SRCOFFS_HIRES + 512);
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const int SRCOFFS_TOTAL = (SRCOFFS_DHIRES + 2560);
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const int SRCOFFS_40COL = 0; // 0
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const int SRCOFFS_IIPLUS = (SRCOFFS_40COL + 256); // 256
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const int SRCOFFS_80COL = (SRCOFFS_IIPLUS + 256); // 512
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const int SRCOFFS_LORES = (SRCOFFS_80COL + 128); // 640
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const int SRCOFFS_HIRES = (SRCOFFS_LORES + 16); // 656
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const int SRCOFFS_DHIRES = (SRCOFFS_HIRES + 512); // 1168
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const int SRCOFFS_TOTAL = (SRCOFFS_DHIRES + 2560); // 3278
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#define SW_80COL (g_bVideoMode & VF_80COL)
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#define SW_DHIRES (g_bVideoMode & VF_DHIRES)
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@ -182,7 +182,7 @@ static HDC g_hDeviceDC;
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LPBYTE g_pFramebufferbits = NULL; // last drawn frame
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static LPBITMAPINFO g_pFramebufferinfo = NULL;
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static LPBYTE frameoffsettable[FRAMEBUFFER_H]; // array of pointers to start of each scanline
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static LPBYTE g_aFrameBufferOffset[FRAMEBUFFER_H]; // array of pointers to start of each scanline
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static LPBYTE g_pHiresBank1;
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static LPBYTE g_pHiresBank0;
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HBITMAP g_hLogoBitmap;
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@ -209,7 +209,7 @@ static WORD colormixmap[6][6][6];
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bool g_VideoForceFullRedraw = 1;
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static LPBYTE framebufferaddr = (LPBYTE)0;
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static LONG framebufferpitch = 0;
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static LONG g_nFrameBufferPitch = 0;
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BOOL graphicsmode = 0;
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static BOOL hasrefreshed = 0;
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static DWORD lastpageflip = 0;
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@ -257,43 +257,54 @@ void Video_MakeScreenShot( FILE *pFile );
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int GetMonochromeIndex();
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//===========================================================================
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void __stdcall CopySource (int destx, int desty,
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int xsize, int ysize,
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int sourcex, int sourcey)
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/** Our BitClit() / VRAM_Copy()
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@param dx Dst X
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@param dy Dst Y
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@param w Width (same for src & dst)
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@param h Height (same for src & dst)
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@param sx Src X
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@param sy Src Y
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// =========================================================================== */
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void CopySource (int dx, int dy, int w, int h, int sx, int sy )
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{
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LPBYTE currdestptr = frameoffsettable [desty] +destx;
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LPBYTE currsourceptr = g_aSourceStartofLine[sourcey]+sourcex;
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int bytesleft;
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while (ysize--)
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{
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bytesleft = xsize;
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while (bytesleft & 3)
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LPBYTE pDst = g_aFrameBufferOffset[ dy ] + dx;
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LPBYTE pSrc = g_aSourceStartofLine[ sy ] + sx;
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int nBytes;
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while (h--)
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{
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--bytesleft;
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*(currdestptr+bytesleft) = *(currsourceptr+bytesleft);
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}
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while (bytesleft)
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{
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bytesleft -= 4;
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*(LPDWORD)(currdestptr+bytesleft) = *(LPDWORD)(currsourceptr+bytesleft);
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}
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currdestptr -= framebufferpitch;
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currsourceptr -= SRCOFFS_TOTAL;
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}
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nBytes = w;
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// If not multiple of 3 bytes, copy first 3 bytes, so the next copy is 4-byte aligned.
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while (nBytes & 3)
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{
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--nBytes;
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*(pDst+nBytes) = *(pSrc+nBytes);
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}
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// Copy 4 bytes at a time
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while (nBytes)
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{
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nBytes -= 4;
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*(LPDWORD)(pDst+nBytes) = *(LPDWORD)(pSrc+nBytes);
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}
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pDst -= g_nFrameBufferPitch;
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pSrc -= SRCOFFS_TOTAL;
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}
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}
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//===========================================================================
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void CreateFrameOffsetTable (LPBYTE addr, LONG pitch) {
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if (framebufferaddr == addr &&
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framebufferpitch == pitch)
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g_nFrameBufferPitch == pitch)
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return;
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framebufferaddr = addr;
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framebufferpitch = pitch;
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g_nFrameBufferPitch = pitch;
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// CREATE THE OFFSET TABLE FOR EACH SCAN LINE IN THE FRAME BUFFER
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for (int y = 0; y < FRAMEBUFFER_H; y++)
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frameoffsettable[y] = framebufferaddr + framebufferpitch*((FRAMEBUFFER_H-1)-y);
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g_aFrameBufferOffset[y] = framebufferaddr + g_nFrameBufferPitch*((FRAMEBUFFER_H-1)-y);
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}
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//===========================================================================
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@ -1400,7 +1411,7 @@ void __stdcall MixColorsVertical(int matx, int maty) { // For tv emulation g_nAp
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void __stdcall CopyMixedSource (int x, int y, int sourcex, int sourcey) { // For tv emulation g_nAppMode
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LPBYTE currsourceptr = g_aSourceStartofLine[sourcey]+sourcex;
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LPBYTE currdestptr = frameoffsettable[y<<1] + (x<<1);
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LPBYTE currdestptr = g_aFrameBufferOffset[y<<1] + (x<<1);
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LPBYTE currptr;
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int matx = x;
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@ -1425,11 +1436,11 @@ void __stdcall CopyMixedSource (int x, int y, int sourcex, int sourcey) { // For
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// transfer up to 6 mixed (half-)pixels of current column to framebuffer
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currptr = currdestptr+bufxoffset;
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if (hgrlinesabove)
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currptr += framebufferpitch << 1;
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currptr += g_nFrameBufferPitch << 1;
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for (i = istart;
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i <= iend;
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currptr -= framebufferpitch, i++) {
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currptr -= g_nFrameBufferPitch, i++) {
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*currptr = *(currptr+1) = colormixbuffer[i];
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}
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}
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@ -1441,32 +1452,45 @@ bool UpdateHiResCell (int x, int y, int xpixel, int ypixel, int offset)
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{
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bool bDirty = false;
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int yoffset = 0;
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while (yoffset < 0x2000) {
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BYTE byteval1 = (x > 0) ? *(g_pHiresBank0+offset+yoffset-1) : 0;
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BYTE byteval2 = *(g_pHiresBank0+offset+yoffset);
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BYTE byteval3 = (x < 39) ? *(g_pHiresBank0+offset+yoffset+1) : 0;
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if ((byteval2 != *(vidlastmem+offset+yoffset+0x2000)) ||
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((x > 0) && ((byteval1 & 0x60) != (*(vidlastmem+offset+yoffset+0x1FFF) & 0x60))) ||
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((x < 39) && ((byteval3 & 0x03) != (*(vidlastmem+offset+yoffset+0x2001) & 0x03))) ||
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g_VideoForceFullRedraw) {
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while (yoffset < 0x2000)
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{
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#if 0 // TRACE_VIDEO
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static char sText[ 256 ];
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sprintf(sText, "x: %3d y: %3d xpix: %3d ypix: %3d offset: %04X \n"
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, x, y, xpixel, ypixel, offset, yoffset
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);
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OutputDebugString("sText");
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#endif
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BYTE byteval1 = (x > 0) ? *(g_pHiresBank0+offset+yoffset-1) : 0;
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BYTE byteval2 = *(g_pHiresBank0+offset+yoffset);
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BYTE byteval3 = (x < 39) ? *(g_pHiresBank0+offset+yoffset+1) : 0;
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if ((byteval2 != *(vidlastmem+offset+yoffset+0x2000)) ||
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((x > 0) && ((byteval1 & 0x60) != (*(vidlastmem+offset+yoffset+0x1FFF) & 0x60))) ||
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((x < 39) && ((byteval3 & 0x03) != (*(vidlastmem+offset+yoffset+0x2001) & 0x03))) ||
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g_VideoForceFullRedraw)
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{
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#define COLOFFS (((byteval1 & 0x60) << 2) | \
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((byteval3 & 0x03) << 5))
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if (g_eVideoType == VT_COLOR_TVEMU)
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{
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CopyMixedSource(xpixel >> 1, (ypixel+(yoffset >> 9)) >> 1,
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SRCOFFS_HIRES+COLOFFS+((x & 1) << 4),(((int)byteval2) << 1));
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}
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else
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{
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CopySource(xpixel,ypixel+(yoffset >> 9),
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14,2,
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SRCOFFS_HIRES+COLOFFS+((x & 1) << 4),(((int)byteval2) << 1));
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}
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if (g_eVideoType == VT_COLOR_TVEMU)
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{
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CopyMixedSource(
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xpixel >> 1, (ypixel+(yoffset >> 9)) >> 1,
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SRCOFFS_HIRES+COLOFFS+((x & 1) << 4), (((int)byteval2) << 1)
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);
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}
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else
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{
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CopySource(
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xpixel, ypixel+(yoffset >> 9),
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14, 2, // 2x upscale: 280x192 -> 560x384
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SRCOFFS_HIRES+COLOFFS+((x & 1) << 4), (((int)byteval2) << 1)
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);
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}
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#undef COLOFFS
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bDirty = true;
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}
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yoffset += 0x400;
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}
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bDirty = true;
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}
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yoffset += 0x400;
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}
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return bDirty;
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}
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@ -2179,7 +2203,7 @@ void _Video_RedrawScreen( VideoUpdateFuncPtr_t pfUpdate, bool bMixed )
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for( int y = 1; y < FRAMEBUFFER_H; y += 2 )
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{
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unsigned char *pSrc = pSrc = frameoffsettable[y];
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unsigned char *pSrc = pSrc = g_aFrameBufferOffset[y];
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for( int x = 0; x < FRAMEBUFFER_W; x++ )
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{
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*pSrc++ = 0;
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