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gsdx-hw: Fix border issue on ComputeFixedTEX0. 

It is quite complex to handle rescaling on ComputeFixedTEX0
so this function is less stricter than GetSizeFixedTEX0,
therefore we remove the reduce optimization,
and we don't handle bilinear filtering which might create wrong interpolation at the border.

Fixes FFX upscaling issues on Bilinear filter during cutscenes.

comment
This commit is contained in:
lightningterror 2019-05-30 15:33:49 +02:00
parent afd5ceef7a
commit 8ff74fc6c2
1 changed files with 29 additions and 13 deletions
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42
plugins/GSdx/GSDrawingContext.cpp
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@ -138,23 +138,39 @@ GIFRegTEX0 GSDrawingContext::GetSizeFixedTEX0(int s_n, const GSVector4& st, bool
void GSDrawingContext::ComputeFixedTEX0(const GSVector4& st, bool linear)
{
GIFRegTEX0 reg = GetSizeFixedTEX0(0, st, linear, false);
// It is quite complex to handle rescaling so this function is less stricter than GetSizeFixedTEX0,
// therefore we remove the reduce optimization and we don't handle bilinear filtering which might create wrong interpolation at the border.
if(reg.TW > TEX0.TW)
int tw = TEX0.TW;
int th = TEX0.TH;
int wms = (int)CLAMP.WMS;
int wmt = (int)CLAMP.WMT;
int minu = (int)CLAMP.MINU;
int minv = (int)CLAMP.MINV;
int maxu = (int)CLAMP.MAXU;
int maxv = (int)CLAMP.MAXV;
GSVector4i uv = GSVector4i(st.floor());
uv.x = findmax(uv.x, uv.z, (1 << TEX0.TW) - 1, wms, minu, maxu);
uv.y = findmax(uv.y, uv.w, (1 << TEX0.TH) - 1, wmt, minv, maxv);
if (wms == CLAMP_REGION_CLAMP || wms == CLAMP_REGION_REPEAT)
tw = extend(uv.x, tw);
if (wmt == CLAMP_REGION_CLAMP || wmt == CLAMP_REGION_REPEAT)
th = extend(uv.y, th);
if ((tw != (int)TEX0.TW) || (th != (int)TEX0.TH))
{
m_fixed_tex0 = true;
TEX0.TW = reg.TW;
}
if(reg.TH > TEX0.TH)
{
m_fixed_tex0 = true;
TEX0.TH = reg.TH;
}
TEX0.TW = tw;
TEX0.TH = th;
if(m_fixed_tex0)
{
GL_INS("FixedTEX0 TW %d=>%d, TH %d=>%d wm %d,%d",
(int)stack.TEX0.TW, (int)TEX0.TW, (int)stack.TEX0.TH, (int)TEX0.TH,
(int)CLAMP.WMS, (int)CLAMP.WMT);
(int)stack.TEX0.TW, (int)TEX0.TW, (int)stack.TEX0.TH, (int)TEX0.TH,
(int)CLAMP.WMS, (int)CLAMP.WMT);
}
}