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VidHD fix minor glitches on top, left & right edges (#1106) 

. when changing VideoType (or feature) then clear these 3 edges
This commit is contained in:
tomcw 2022-05-29 22:00:20 +01:00
parent 8f07479dad
commit 0f750ee167
1 changed files with 76 additions and 8 deletions
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84
source/NTSC.cpp
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@ -113,7 +113,6 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
static unsigned short (*g_pHorzClockOffset)[VIDEO_SCANNER_MAX_HORZ] = 0;
typedef void (*UpdateScreenFunc_t)(long);
static UpdateScreenFunc_t g_apFuncVideoUpdateScanline[VIDEO_SCANNER_Y_DISPLAY];
static UpdateScreenFunc_t g_pFuncUpdateTextScreen = 0; // updateScreenText40;
static UpdateScreenFunc_t g_pFuncUpdateGraphicsScreen = 0; // updateScreenText40;
static UpdateScreenFunc_t g_pFuncModeSwitchDelayed = 0;
@ -689,15 +688,19 @@ inline void updateVideoScannerHorzEOL()
if (!GetColorBurst())
{
// Only for: VF_TEXT && !VF_MIXED (ie. full 24-row TEXT40 or TEXT80)
g_pFuncUpdateBnWPixel(g_nLastColumnPixelNTSC);
g_pFuncUpdateBnWPixel(0);
g_pFuncUpdateBnWPixel(0);
g_pFuncUpdateBnWPixel(g_nLastColumnPixelNTSC); // last pixel in 14M video modes
g_pFuncUpdateBnWPixel(0); // 14M ringing pixel! (better definition for 80COL char's right-hand edge)
// Direct write instead of g_pFuncUpdateBnWPixel(0) to avoid random pixels on RHS in VT_COLOR_MONITOR_NTSC
*(uint32_t*)g_pVideoAddress++ = 0 | ALPHA32_MASK;
*(uint32_t*)g_pVideoAddress++ = 0 | ALPHA32_MASK;
}
else
{
g_pFuncUpdateHuePixel(g_nLastColumnPixelNTSC);
g_pFuncUpdateHuePixel(0);
g_pFuncUpdateHuePixel(0);
g_pFuncUpdateHuePixel(g_nLastColumnPixelNTSC); // last pixel in 14M video modes
g_pFuncUpdateHuePixel(0); // 14M ringing pixel! (better definition for 80COL char's right-hand edge)
// Direct write instead of g_pFuncUpdateHuePixel(0) to avoid random pixels on RHS in VT_COLOR_MONITOR_NTSC
*(uint32_t*)g_pVideoAddress++ = 0 | ALPHA32_MASK;
*(uint32_t*)g_pVideoAddress++ = 0 | ALPHA32_MASK;
}
}
@ -772,11 +775,74 @@ inline void updateVideoScannerAddress()
// Centre the older //e video modes when running with a VidHD
g_pVideoAddress += GetVideo().GetFrameBufferCentringValue();
if (GetVideo().HasVidHD())
{
if (GetVideo().GetVideoType() == VT_COLOR_MONITOR_NTSC)
{
// EG. Switching between TEXT (full 24 lines) and MIXED (HGR with purple vertical line-0)
// - AppleWin-Test repo, Tests-Various.dsk, option-C
g_pVideoAddress -= 2;
*(uint32_t*)g_pVideoAddress++ = 0 | ALPHA32_MASK;
*(uint32_t*)g_pVideoAddress++ = 0 | ALPHA32_MASK;
}
}
g_nColorPhaseNTSC = INITIAL_COLOR_PHASE;
g_nLastColumnPixelNTSC = 0;
g_nSignalBitsNTSC = 0;
}
//===========================================================================
#if 1
#define CLEAR_COLOUR_TOP 0
#define CLEAR_COLOUR_SIDE 0
#else // debug
#define CLEAR_COLOUR_TOP 0x0000FF00 // green
#define CLEAR_COLOUR_SIDE 0x00FF0000 // red
#endif
static void ClearOverscanVideoArea(void)
{
if (g_pFuncUpdateGraphicsScreen == updateScreenSHR)
return;
bgra_t* pSaveVideoAddress = g_pVideoAddress; // save g_pVideoAddress
g_pVideoAddress = g_pScanLines[0];
uint32_t* pLine1Prev = getScanlinePreviousInbetween();
g_pVideoAddress = pSaveVideoAddress; // restore g_pVideoAddress
const uint32_t kOverscanOffsetL = 3; // In updateVideoScannerAddress(), g_pVideoAddress could be adjusted by: -2 + -1 = -3
const uint32_t kOverscanSpanL = 3;
const uint32_t kOverscanOverlapL = kOverscanSpanL - kOverscanOffsetL;
const uint32_t kOverscanOffsetR = 2;
const uint32_t kOverscanSpanR = 4; // In updateVideoScannerHorzEOL() it writes 4 extra pixels
const uint32_t kOverscanOverlapR = kOverscanSpanR - kOverscanOffsetR;
const uint32_t kHorzPixels = (VIDEO_SCANNER_MAX_HORZ - VIDEO_SCANNER_HORZ_START) * 14;
pLine1Prev += GetVideo().GetFrameBufferCentringValue() - kOverscanOffsetL; // Centre the older //e video modes when running with a VidHD
// Clear this line at Y=-1
for (uint32_t i = 0; i < (kHorzPixels + (kOverscanSpanL - kOverscanOverlapL) + (kOverscanSpanR - kOverscanOverlapR)); i++)
*pLine1Prev++ = CLEAR_COLOUR_TOP | ALPHA32_MASK;
// Clear overscan before & after display area
for (uint32_t i = 0; i < VIDEO_SCANNER_Y_DISPLAY*2; i++)
{
uint32_t* pScanLine = ((uint32_t*)g_pScanLines[i]);
pScanLine += GetVideo().GetFrameBufferCentringValue() - kOverscanOffsetL; // Centre the older //e video modes when running with a VidHD
for (uint32_t j = 0; j < kOverscanSpanL + 1; j++)
pScanLine[j] = CLEAR_COLOUR_SIDE | ALPHA32_MASK;
pScanLine += kOverscanOffsetL + kHorzPixels - kOverscanOffsetR;
for (uint32_t j = 0; j < kOverscanSpanR; j++)
pScanLine[j] = CLEAR_COLOUR_SIDE | ALPHA32_MASK;
}
}
//===========================================================================
INLINE uint16_t getVideoScannerAddressTXT()
{
@ -2181,7 +2247,9 @@ _mono:
else
g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWMonitorDoubleScanline;
break;
}
}
ClearOverscanVideoArea();
}
//===========================================================================