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VideoCommon: Handle emboss texgen with only a single normal

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Fixes a large number of effects in Rogue Squadron 2 and 3.
This commit is contained in:
Pokechu22
2022-04-13 22:03:34 -07:00
parent 39b2854b98
commit 2a5c77f43f
14 changed files with 138 additions and 62 deletions
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45
Source/Core/VideoCommon/VertexShaderGen.cpp
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@ -253,23 +253,24 @@ ShaderCode GenerateVertexShaderCode(APIType api_type, const ShaderHostConfig& ho
"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");
// Only the first normal gets normalized (TODO: why?)
out.Write("float3 _normal = normalize(float3(dot(N0, rawnormal), dot(N1, rawnormal), dot(N2, "
"rawnormal)));\n");
"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");
}
if ((uid_data->components & VB_HAS_TANGENT) != 0)
{
out.Write("float3 _tangent = float3(dot(N0, rawtangent), dot(N1, rawtangent), dot(N2, "
"rawtangent));\n");
}
if ((uid_data->components & VB_HAS_BINORMAL) != 0)
{
out.Write("float3 _binormal = float3(dot(N0, rawbinormal), dot(N1, rawbinormal), dot(N2, "
"rawbinormal));\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");
}
out.Write("o.pos = float4(dot(" I_PROJECTION "[0], pos), dot(" I_PROJECTION
@ -341,22 +342,12 @@ ShaderCode GenerateVertexShaderCode(APIType api_type, const ShaderHostConfig& ho
{
case TexGenType::EmbossMap: // calculate tex coords into bump map
if ((uid_data->components & (VB_HAS_TANGENT | VB_HAS_BINORMAL)) != 0)
{
// transform the light dir into tangent space
out.Write("ldir = normalize(" LIGHT_POS ".xyz - pos.xyz);\n",
LIGHT_POS_PARAMS(texinfo.embosslightshift));
out.Write(
"o.tex{}.xyz = o.tex{}.xyz + float3(dot(ldir, _tangent), dot(ldir, _binormal), 0.0);\n",
i, texinfo.embosssourceshift);
}
else
{
// The following assert was triggered in House of the Dead Overkill and Star Wars Rogue
// Squadron 2
// ASSERT(0); // should have normals
out.Write("o.tex{}.xyz = o.tex{}.xyz;\n", i, texinfo.embosssourceshift);
}
// transform the light dir into tangent space
out.Write("ldir = normalize(" LIGHT_POS ".xyz - pos.xyz);\n",
LIGHT_POS_PARAMS(texinfo.embosslightshift));
out.Write(
"o.tex{}.xyz = o.tex{}.xyz + float3(dot(ldir, _tangent), dot(ldir, _binormal), 0.0);\n",
i, texinfo.embosssourceshift);
break;
case TexGenType::Color0: