// Pre: nSrcAdjustment: for 160-color images, src is +1 compared to dst
static void CopySource(int w, int h, int sx, int sy, bgra_t *pVideoAddress, const int nSrcAdjustment = 0)
{
UINT32* pDst = (UINT32*) pVideoAddress;
const BYTE* const pSrc = g_aSourceStartofLine[ sy ] + sx;
while (h--)
{
int nBytes = w;
while (nBytes)
{
--nBytes;
if (IsVideoStyle(VS_HALF_SCANLINES) && !(h & 1))
{
// 50% Half Scan Line clears every odd scanline (and SHIFT+PrintScreen saves only the even rows)
*(pDst+nBytes) = 0;
}
else
{
_ASSERT( *(pSrc+nBytes+nSrcAdjustment) < (sizeof(PalIndex2RGB)/sizeof(PalIndex2RGB[0])) );
const RGBQUAD& rRGB = PalIndex2RGB[ *(pSrc+nBytes+nSrcAdjustment) ];
const UINT32 rgb = (((UINT32)rRGB.rgbRed)<<16) | (((UINT32)rRGB.rgbGreen)<<8) | ((UINT32)rRGB.rgbBlue);
*(pDst+nBytes) = rgb;
}
}
pDst -= GetFrameBufferWidth();
}
}
static void CopyMixedSource(int x, int y, int sx, int sy, bgra_t *pVideoAddress)
{
const BYTE* const pSrc = g_aSourceStartofLine[ sy ] + sx;
const int matx = x*14;
const int maty = HGR_MATRIX_YOFFSET + y;
const bool isSWMIXED = VideoGetSWMIXED();
// transfer 14 pixels (i.e. the visible part of an apple hgr-byte) from row to pixelmatrix
for (int nBytes=13; nBytes>=0; nBytes--)
{
hgrpixelmatrix[matx+nBytes][maty] = *(pSrc+nBytes);
}
const bool bIsHalfScanLines = IsVideoStyle(VS_HALF_SCANLINES);
const UINT frameBufferWidth = GetFrameBufferWidth();
for (int nBytes=13; nBytes>=0; nBytes--)
{
// color mixing between adjacent scanlines at current x position
MixColorsVertical(matx+nBytes, maty, isSWMIXED); //Post: colormixbuffer[]
UINT32* pDst = (UINT32*) pVideoAddress;
for (int h=HGR_MATRIX_YOFFSET; h<=HGR_MATRIX_YOFFSET+1; h++)
{
if (bIsHalfScanLines && (h & 1))
{
// 50% Half Scan Line clears every odd scanline (and SHIFT+PrintScreen saves only the even rows)
*(pDst+nBytes) = 0;
}
else
{
_ASSERT( colormixbuffer[h] < (sizeof(PalIndex2RGB)/sizeof(PalIndex2RGB[0])) );
const RGBQUAD& rRGB = PalIndex2RGB[ colormixbuffer[h] ];
const UINT32 rgb = (((UINT32)rRGB.rgbRed)<<16) | (((UINT32)rRGB.rgbGreen)<<8) | ((UINT32)rRGB.rgbBlue);
*(pDst+nBytes) = rgb;
}
pDst -= frameBufferWidth;
}
}
}
void CEngine::CopyMainRenderTargetToBackBuffer(CRenderContext& renderContext)
{
CRenderTarget& rt = m_mainRenderTarget[m_currentMainRenderTarget];
m_pTransformedPrimEffect->SetTechnique(renderContext, "TransformedPrim");
m_pTransformedPrimEffect->Begin(renderContext);
m_pTransformedPrimEffect->BeginPass(renderContext, 0);
float offset[] = {
0.5f / GetFrameBufferWidth() ,
0.5f / GetFrameBufferHeight()
};
m_pTransformedPrimEffect->SetTexture(renderContext, "g_tex", rt.GetTexture());
m_pTransformedPrimEffect->SetValue(renderContext, "g_offset", offset, sizeof(offset));
m_pTransformedPrimEffect->CommitChanges(renderContext);
renderContext.SetVertexDeclaration(m_copyBackBufferPrim.GetVertexDecl());
renderContext.SetStreamSource(0, m_copyBackBufferPrim.GetVertexBuffer());
renderContext.SetIndices(m_copyBackBufferPrim.GetIndexBuffer());
renderContext.DrawIndexedPrimitive(&m_copyBackBufferPrim);
m_pTransformedPrimEffect->EndPass(renderContext);
m_pTransformedPrimEffect->End(renderContext);
}
