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Implement left offset for source image when VI_ORIGIN address points on non-zero position in scan-line.

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Fixed PAL version of International Superstar Soccer 98, #1845
This commit is contained in:
Sergey Lipskiy 2018-06-23 21:56:10 +07:00
parent a3e34aa426
commit 2a677a23a8
1 changed files with 12 additions and 9 deletions
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21
src/FrameBuffer.cpp
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@ -1278,7 +1278,7 @@ void FrameBufferList::renderBuffer()
s32 srcY0, srcY1;
s32 dstX0, dstX1, dstY0, dstY1;
s32 srcWidth, srcHeight;
s32 Xoffset = 0;
s32 XoffsetLeft = 0, XoffsetRight = 0;
s32 Xdivot = 0;
s32 srcPartHeight = 0;
s32 dstPartHeight = 0;
@ -1294,9 +1294,13 @@ void FrameBufferList::renderBuffer()
srcY0 = 1;
if ((rdpRes.vi_width != addrOffset * 2) && (addrOffset % rdpRes.vi_width != 0))
Xoffset = rdpRes.vi_width - addrOffset % rdpRes.vi_width;
if (Xoffset == pBuffer->m_width)
Xoffset = 0;
XoffsetRight = rdpRes.vi_width - addrOffset % rdpRes.vi_width;
if (XoffsetRight == pBuffer->m_width) {
XoffsetRight = 0;
} else if (XoffsetRight > static_cast<s32>(pBuffer->m_width / 2)) {
XoffsetRight = 0;
XoffsetLeft = addrOffset % rdpRes.vi_width;
}
if (rdpRes.vi_lowerfield) {
if (srcY0 > 0)
@ -1336,15 +1340,14 @@ void FrameBufferList::renderBuffer()
const s32 hEnd = _SHIFTR(*REG.VI_H_START, 0, 10);
const s32 hx1 = max(0, h0 + 640 - hEnd);
//const s32 hx1 = hx0 + rdpRes.vi_hres;
dstX0 = (s32)((hx0 * viScaleX + Xoffset) * dstScaleX);
dstX1 = m_overscan.getDrawingWidth() - (s32)((hx1*viScaleX + Xdivot) * dstScaleX);
srcWidth -= Xoffset + Xdivot;
dstX0 = (s32)((hx0 + XoffsetRight) * dstScaleX);
dstX1 = m_overscan.getDrawingWidth() - (s32)((hx1 + Xdivot) * dstScaleX);
const f32 srcScaleY = pFilteredBuffer->m_scale;
CachedTexture * pBufferTexture = pFilteredBuffer->m_pTexture;
s32 srcCoord[4] = { 0,
s32 srcCoord[4] = { (s32)(XoffsetLeft * srcScaleX),
(s32)(srcY0*srcScaleY),
(s32)(srcWidth * srcScaleX),
(s32)((srcWidth + XoffsetLeft - XoffsetRight - Xdivot) * srcScaleX),
min((s32)(srcY1*srcScaleY), (s32)pBufferTexture->realHeight) };
if (srcCoord[2] > pBufferTexture->realWidth || srcCoord[3] > pBufferTexture->realHeight) {
removeBuffer(pBuffer->m_startAddress);