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calculate texture coordinates

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This commit is contained in:
StapleButter
2017-02-28 00:50:54 +01:00
parent fb9dddc360
commit f16d2aec61
5 changed files with 48 additions and 5 deletions
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37
GPU3D.cpp
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@ -169,10 +169,14 @@ void UpdateClipMatrix();
u32 PolygonMode;
s16 CurVertex[3];
u8 VertexColor[3];
s16 TexCoords[2];
u32 PolygonAttr;
u32 CurPolygonAttr;
u32 TexParam;
u32 TexPalette;
Vertex TempVertexBuffer[4];
u32 VertexNum;
u32 VertexNumInPoly;
@ -410,6 +414,9 @@ void ClipSegment(Vertex* outbuf, Vertex* vout, Vertex* vin)
INTERPOLATE(Color[1]);
INTERPOLATE(Color[2]);
INTERPOLATE(TexCoords[0]);
INTERPOLATE(TexCoords[1]);
mid.Clipped = true;
mid.ViewportTransformDone = false;
@ -798,6 +805,17 @@ void SubmitVertex()
vertextrans->Color[1] = (VertexColor[1] << 12) + 0xFFF;
vertextrans->Color[2] = (VertexColor[2] << 12) + 0xFFF;
if ((TexParam >> 30) == 3)
{
vertextrans->TexCoords[0] = (CurVertex[0]*TexMatrix[0] + CurVertex[1]*TexMatrix[4] + CurVertex[2]*TexMatrix[8] + 0x1000*TexCoords[0]) >> 12;
vertextrans->TexCoords[1] = (CurVertex[0]*TexMatrix[1] + CurVertex[1]*TexMatrix[5] + CurVertex[2]*TexMatrix[9] + 0x1000*TexCoords[1]) >> 12;
}
else
{
vertextrans->TexCoords[0] = TexCoords[0];
vertextrans->TexCoords[1] = TexCoords[1];
}
vertextrans->Clipped = false;
vertextrans->ViewportTransformDone = false;
@ -1219,6 +1237,17 @@ void ExecuteCommand()
case 0x21:
// TODO: more cycles if lights are enabled
// TODO also texcoords if needed
break;
case 0x22: // texcoord
TexCoords[0] = ExecParams[0] & 0xFFFF;
TexCoords[1] = ExecParams[1] >> 16;
if ((TexParam >> 30) == 1)
{
TexCoords[0] = (TexCoords[0]*TexMatrix[0] + TexCoords[1]*TexMatrix[4] + TexMatrix[8] + TexMatrix[12]) >> 12;
TexCoords[1] = (TexCoords[0]*TexMatrix[1] + TexCoords[1]*TexMatrix[5] + TexMatrix[9] + TexMatrix[13]) >> 12;
}
break;
case 0x23: // full vertex
@ -1264,6 +1293,14 @@ void ExecuteCommand()
PolygonAttr = ExecParams[0];
break;
case 0x2A: // texture param
TexParam = ExecParams[0];
break;
case 0x2B: // texture palette
TexPalette = ExecParams[0] & 0x1FFF;
break;
case 0x40:
PolygonMode = ExecParams[0] & 0x3;
VertexNum = 0;