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Idealized video: support Double-Hires-40 for FT DIGIDREAM demo

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This commit is contained in:
tomcw
2020-10-17 12:31:44 +01:00
parent 4defaa80fb
commit a3f5989176
2 changed files with 21 additions and 23 deletions
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source/RGBMonitor.cpp
+8 -1
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@@ -587,7 +587,7 @@ static void CopySource(int w, int h, int sx, int sy, bgra_t *pVideoAddress, cons
//===========================================================================
#define HIRES_COLUMN_OFFSET (((byteval1 & 0xE0) << 2) | ((byteval3 & 0x03) << 5)) // (prevHighBit | last 2 pixels | next 2 pixesl) * HIRES_COLUMN_UNIT_SIZE
#define HIRES_COLUMN_OFFSET (((byteval1 & 0xE0) << 2) | ((byteval3 & 0x03) << 5)) // (prevHighBit | last 2 pixels | next 2 pixels) * HIRES_COLUMN_UNIT_SIZE
void UpdateHiResCell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
{
@@ -596,6 +596,13 @@ void UpdateHiResCell (int x, int y, uint16_t addr, bgra_t *pVideoAddress)
BYTE byteval2 = *(pMain);
BYTE byteval3 = (x < 39) ? *(pMain+1) : 0;
if (g_uVideoMode & VF_DHIRES) // ie. VF_DHIRES=1, VF_HIRES=1, VF_80COL=0 - NTSC.cpp refers to this as "DoubleHires40"
{
byteval1 &= 0x7f;
byteval2 &= 0x7f;
byteval3 &= 0x7f;
}
if (IsVideoStyle(VS_COLOR_VERTICAL_BLEND))
{
CopyMixedSource(x, y, SRCOFFS_HIRES+HIRES_COLUMN_OFFSET+((x & 1)*HIRES_COLUMN_SUBUNIT_SIZE), (int)byteval2, pVideoAddress);