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Cache normals in addition to binormals and tangents

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Fixes LIT (https://bugs.dolphin-emu.org/issues/13635). The text does not include normals, but has lighting enabled. With the previous default of (0, 0, 0), lighting was always black (as dot(X, (0, 0, 0)) is always 0). It seems like the normal from the map in the background (0, 0, 1) is re-used.

LIT also has the vertex color enabled while vertex color is not specified, the same as SMS's debug cubes; the default MissingColorValue GameINI value of solid white seems to work correctly in this case.
This commit is contained in:
Pokechu22
2024-09-24 23:46:45 -07:00
parent 35ec2e97a8
commit 937bb2aa2e
15 changed files with 140 additions and 83 deletions
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65
Source/Core/VideoCommon/VertexShaderGen.cpp
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@ -312,56 +312,43 @@ ShaderCode GenerateVertexShaderCode(APIType api_type, const ShaderHostConfig& ho
out.Write("int posidx = int(posmtx.r);\n"
"float4 P0 = " I_TRANSFORMMATRICES "[posidx];\n"
"float4 P1 = " I_TRANSFORMMATRICES "[posidx + 1];\n"
"float4 P2 = " I_TRANSFORMMATRICES "[posidx + 2];\n");
if ((uid_data->components & VB_HAS_NORMAL) != 0)
{
out.Write("int normidx = posidx & 31;\n"
"float3 N0 = " I_NORMALMATRICES "[normidx].xyz;\n"
"float3 N1 = " I_NORMALMATRICES "[normidx + 1].xyz;\n"
"float3 N2 = " I_NORMALMATRICES "[normidx + 2].xyz;\n");
}
"float4 P2 = " I_TRANSFORMMATRICES "[posidx + 2];\n"
"int normidx = posidx & 31;\n"
"float3 N0 = " I_NORMALMATRICES "[normidx].xyz;\n"
"float3 N1 = " I_NORMALMATRICES "[normidx + 1].xyz;\n"
"float3 N2 = " I_NORMALMATRICES "[normidx + 2].xyz;\n");
}
else
{
// One shared matrix
out.Write("float4 P0 = " I_POSNORMALMATRIX "[0];\n"
"float4 P1 = " I_POSNORMALMATRIX "[1];\n"
"float4 P2 = " I_POSNORMALMATRIX "[2];\n");
if ((uid_data->components & VB_HAS_NORMAL) != 0)
{
out.Write("float3 N0 = " I_POSNORMALMATRIX "[3].xyz;\n"
"float3 N1 = " I_POSNORMALMATRIX "[4].xyz;\n"
"float3 N2 = " I_POSNORMALMATRIX "[5].xyz;\n");
}
"float4 P2 = " I_POSNORMALMATRIX "[2];\n"
"float3 N0 = " I_POSNORMALMATRIX "[3].xyz;\n"
"float3 N1 = " I_POSNORMALMATRIX "[4].xyz;\n"
"float3 N2 = " I_POSNORMALMATRIX "[5].xyz;\n");
}
out.Write("// Multiply the position vector by the position matrix\n"
"float4 pos = float4(dot(P0, rawpos), dot(P1, rawpos), dot(P2, rawpos), 1.0);\n");
if ((uid_data->components & VB_HAS_NORMAL) != 0)
{
if ((uid_data->components & VB_HAS_TANGENT) == 0)
out.Write("float3 rawtangent = " I_CACHED_TANGENT ".xyz;\n");
if ((uid_data->components & VB_HAS_BINORMAL) == 0)
out.Write("float3 rawbinormal = " I_CACHED_BINORMAL ".xyz;\n");
if ((uid_data->components & VB_HAS_NORMAL) == 0)
out.Write("float3 rawnormal = " I_CACHED_NORMAL ".xyz;\n");
if ((uid_data->components & VB_HAS_TANGENT) == 0)
out.Write("float3 rawtangent = " I_CACHED_TANGENT ".xyz;\n");
if ((uid_data->components & VB_HAS_BINORMAL) == 0)
out.Write("float3 rawbinormal = " I_CACHED_BINORMAL ".xyz;\n");
// The scale of the transform matrix is used to control the size of the emboss map effect, by
// changing the scale of the transformed binormals (which only get used by emboss map texgens).
// By normalising the first transformed normal (which is used by lighting calculations and needs
// to be unit length), the same transform matrix can do double duty, scaling for emboss mapping,
// and not scaling for lighting.
out.Write("float3 _normal = normalize(float3(dot(N0, rawnormal), dot(N1, rawnormal), dot(N2, "
"rawnormal)));\n"
"float3 _tangent = float3(dot(N0, rawtangent), dot(N1, rawtangent), dot(N2, "
"rawtangent));\n"
"float3 _binormal = float3(dot(N0, rawbinormal), dot(N1, rawbinormal), dot(N2, "
"rawbinormal));\n");
}
else
{
out.Write("float3 _normal = float3(0.0, 0.0, 0.0);\n");
out.Write("float3 _binormal = float3(0.0, 0.0, 0.0);\n");
out.Write("float3 _tangent = float3(0.0, 0.0, 0.0);\n");
}
// The scale of the transform matrix is used to control the size of the emboss map effect, by
// changing the scale of the transformed binormals (which only get used by emboss map texgens).
// By normalising the first transformed normal (which is used by lighting calculations and needs
// to be unit length), the same transform matrix can do double duty, scaling for emboss mapping,
// and not scaling for lighting.
out.Write("float3 _normal = normalize(float3(dot(N0, rawnormal), dot(N1, rawnormal), dot(N2, "
"rawnormal)));\n"
"float3 _tangent = float3(dot(N0, rawtangent), dot(N1, rawtangent), dot(N2, "
"rawtangent));\n"
"float3 _binormal = float3(dot(N0, rawbinormal), dot(N1, rawbinormal), dot(N2, "
"rawbinormal));\n");
out.Write("o.pos = float4(dot(" I_PROJECTION "[0], pos), dot(" I_PROJECTION
"[1], pos), dot(" I_PROJECTION "[2], pos), dot(" I_PROJECTION "[3], pos));\n");