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1x snapshots now support all 4 phosphor/Blargg combinations

This commit is contained in:
thrust26 2017-09-18 09:27:51 +02:00
parent 8aad8afda7
commit 11367e6a17
1 changed files with 13 additions and 14 deletions
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25
src/emucore/TIASurface.cxx
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@ -17,6 +17,7 @@
#include <cmath>
#include <algorithm>
#include <math.h>
#include "FrameBuffer.hxx"
#include "Settings.hxx"
@ -111,29 +112,27 @@ void TIASurface::setPalette(const uInt32* tia_palette, const uInt32* rgb_palette
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const FBSurface& TIASurface::baseSurface(GUI::Rect& rect) const
{
uInt32 tiaw = myTIA->width(), width = tiaw*2, height = myTIA->height();
uInt32 tiaw = myTIA->width(), width = tiaw * 2, height = myTIA->height();
rect.setBounds(0, 0, width, height);
// Fill the surface with pixels from the TIA, scaled 2x horizontally
uInt32 *buf_ptr, pitch, idx;
myBaseTiaSurface->basePtr(buf_ptr, pitch);
// Get Blargg buffer and width
uInt32 *blarggBuf, blarggPitch;
myTiaSurface->basePtr(blarggBuf, blarggPitch);
double blarggXFactor = (double)blarggPitch / width;
bool useBlargg = ntscEnabled();
// Fill the surface with pixels from the TIA, scaled 2x horizontally
uInt32 *buf_ptr, pitch;
myBaseTiaSurface->basePtr(buf_ptr, pitch);
for(uInt32 y = 0; y < height; ++y)
{
for(uInt32 x = 0; x < width; ++x)
{
idx = y * myTIA->width() + (x >> 1);
if (myUsePhosphor)
{
if (useBlargg)
// just some odd formula to convert to Blargg index (reversed 7:2 conversion)
idx = (y * (myTIA->width() * 7 + 10) >> 1) + y * 5 * 0 + (x * 7 >> 2);
*buf_ptr++ = myRGBFramebuffer[idx];
}
*buf_ptr++ = blarggBuf[y * blarggPitch + (uInt32)nearbyint(x * blarggXFactor)];
else
*buf_ptr++ = myPalette[*(myTIA->frameBuffer() + idx)];
*buf_ptr++ = myPalette[*(myTIA->frameBuffer() + y * tiaw + x / 2)];
}
}