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* support for culling polygons that clip through the far plane

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* toon/edge/fog tables and related registers
This commit is contained in:
StapleButter 2017-03-16 16:37:38 +01:00
parent 7f85a10002
commit 0b3d150a71
1 changed files with 82 additions and 2 deletions
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84
GPU3D.cpp
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@ -146,6 +146,13 @@ u32 NumCommands, CurCommand, ParamCount, TotalParams;
u32 DispCnt;
u32 AlphaRef;
u16 ToonTable[32];
u16 EdgeTable[8];
u32 FogColor;
u32 FogOffset;
u8 FogDensityTable[32];
u32 GXStat;
u32 ExecParams[32];
@ -555,8 +562,6 @@ void SubmitPolygon()
// if it's outside, check if the previous and next vertices are inside
// if so, place a new vertex at the edge of the view volume
// TODO: optional culling of polygons that clip through the far plane
// X clipping
c = clipstart;
@ -689,6 +694,7 @@ void SubmitPolygon()
// Z clipping
bool farplaneclip = false;
nverts = c; c = clipstart;
for (int i = clipstart; i < nverts; i++)
{
@ -698,6 +704,8 @@ void SubmitPolygon()
Vertex vtx = clippedvertices[1][i];
if (vtx.Position[2] > vtx.Position[3])
{
farplaneclip = true;
Vertex* vprev = &clippedvertices[1][prev];
if (vprev->Position[2] <= vprev->Position[3])
{
@ -716,6 +724,9 @@ void SubmitPolygon()
clippedvertices[0][c++] = vtx;
}
if (farplaneclip && (!(CurPolygonAttr & (1<<12))))
return;
nverts = c; c = clipstart;
for (int i = clipstart; i < nverts; i++)
{
@ -1715,6 +1726,12 @@ void Write8(u32 addr, u8 val)
return;
}
if (addr >= 0x04000360 && addr < 0x04000380)
{
FogDensityTable[addr - 0x04000360] = val;
return;
}
printf("unknown GPU3D write8 %08X %02X\n", addr, val);
}
@ -1742,6 +1759,36 @@ void Write16(u32 addr, u16 val)
case 0x04000356:
ClearAttr2 = (ClearAttr2 & 0xFFFF) | (val << 16);
return;
case 0x04000358:
FogColor = (FogColor & 0xFFFF0000) | val;
return;
case 0x0400035A:
FogColor = (FogColor & 0xFFFF) | (val << 16);
return;
case 0x0400035C:
FogOffset = val;
return;
}
if (addr >= 0x04000330 && addr < 0x04000340)
{
EdgeTable[(addr - 0x04000330) >> 1] = val;
return;
}
if (addr >= 0x04000360 && addr < 0x04000380)
{
addr -= 0x04000360;
FogDensityTable[addr] = val & 0xFF;
FogDensityTable[addr+1] = val >> 8;
return;
}
if (addr >= 0x04000380 && addr < 0x040003C0)
{
ToonTable[(addr - 0x04000380) >> 1] = val;
return;
}
printf("unknown GPU3D write16 %08X %04X\n", addr, val);
@ -1766,6 +1813,13 @@ void Write32(u32 addr, u32 val)
ClearAttr2 = val;
return;
case 0x04000358:
FogColor = val;
return;
case 0x0400035C:
FogOffset = val;
return;
case 0x04000600:
if (val & 0x8000)
{
@ -1830,6 +1884,32 @@ void Write32(u32 addr, u32 val)
return;
}
if (addr >= 0x04000330 && addr < 0x04000340)
{
addr = (addr - 0x04000330) >> 1;
EdgeTable[addr] = val & 0xFFFF;
EdgeTable[addr+1] = val >> 16;
return;
}
if (addr >= 0x04000360 && addr < 0x04000380)
{
addr -= 0x04000360;
FogDensityTable[addr] = val & 0xFF;
FogDensityTable[addr+1] = (val >> 8) & 0xFF;
FogDensityTable[addr+2] = (val >> 16) & 0xFF;
FogDensityTable[addr+3] = val >> 24;
return;
}
if (addr >= 0x04000380 && addr < 0x040003C0)
{
addr = (addr - 0x04000380) >> 1;
ToonTable[addr] = val & 0xFFFF;
ToonTable[addr+1] = val >> 16;
return;
}
printf("unknown GPU3D write32 %08X %08X\n", addr, val);
}