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texcoord wrap modes

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This commit is contained in:
Arisotura 2019-04-29 18:24:36 +02:00
parent eb9cfd12d4
commit e7be82430b
1 changed files with 29 additions and 2 deletions
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31
src/GPU3D_OpenGL43.cpp
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@ -108,8 +108,35 @@ vec4 TextureLookup()
int vramaddr = int(attr & 0xFFFF) << 3;
ivec2 st = ivec2(fTexcoord);
st.x &= (tw-1);
st.y &= (th-1);
if ((attr & (1<<16)) != 0)
{
if ((attr & (1<<18)) != 0)
{
if ((st.x & tw) != 0)
st.x = (tw-1) - (st.x & (tw-1));
else
st.x = (st.x & (tw-1));
}
else
st.x &= (tw-1);
}
else
st.x = clamp(st.x, 0, tw-1);
if ((attr & (1<<17)) != 0)
{
if ((attr & (1<<19)) != 0)
{
if ((st.y & th) != 0)
st.y = (th-1) - (st.y & (th-1));
else
st.y = (st.y & (th-1));
}
else
st.y &= (th-1);
}
else
st.y = clamp(st.y, 0, th-1);
uint type = (attr >> 26) & 0x7;
if (type == 4)