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GPU: Use hardware tess params for texgen.

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Fixes field in Test Drive Unlimited with hardware tessellation.
This commit is contained in:
Unknown W. Brackets 2022-09-21 21:15:58 -07:00
parent 337518415e
commit a681d149db
1 changed files with 18 additions and 5 deletions
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23
GPU/Common/VertexShaderGenerator.cpp
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@ -1128,7 +1128,10 @@ bool GenerateVertexShader(const VShaderID &id, char *buffer, const ShaderLanguag
}
} else {
if (hasTexcoord) {
WRITE(p, " %sv_texcoord = vec3(texcoord.xy * u_uvscaleoffset.xy + u_uvscaleoffset.zw, 0.0);\n", compat.vsOutPrefix);
if (doBezier || doSpline)
WRITE(p, " %sv_texcoord = vec3(tess.tex.xy * u_uvscaleoffset.xy + u_uvscaleoffset.zw, 0.0);\n", compat.vsOutPrefix);
else
WRITE(p, " %sv_texcoord = vec3(texcoord.xy * u_uvscaleoffset.xy + u_uvscaleoffset.zw, 0.0);\n", compat.vsOutPrefix);
} else {
WRITE(p, " %sv_texcoord = vec3(u_uvscaleoffset.zw, 0.0);\n", compat.vsOutPrefix);
}
@ -1140,26 +1143,36 @@ bool GenerateVertexShader(const VShaderID &id, char *buffer, const ShaderLanguag
std::string temp_tc;
switch (uvProjMode) {
case GE_PROJMAP_POSITION: // Use model space XYZ as source
temp_tc = "vec4(position, 1.0)";
if (doBezier || doSpline)
temp_tc = "vec4(tess.pos, 1.0)";
else
temp_tc = "vec4(position, 1.0)";
break;
case GE_PROJMAP_UV: // Use unscaled UV as source
{
// prescale is false here.
if (hasTexcoord) {
temp_tc = "vec4(texcoord.xy, 0.0, 1.0)";
if (doBezier || doSpline)
temp_tc = "vec4(tess.tex.xy, 0.0, 1.0)";
else
temp_tc = "vec4(texcoord.xy, 0.0, 1.0)";
} else {
temp_tc = "vec4(0.0, 0.0, 0.0, 1.0)";
}
}
break;
case GE_PROJMAP_NORMALIZED_NORMAL: // Use normalized transformed normal as source
if (hasNormal)
if (hasNormalTess)
temp_tc = StringFromFormat("length(tess.nrm) == 0.0 ? vec4(0.0, 0.0, 1.0, 1.0) : vec4(normalize(%stess.nrm), 1.0)", flipNormal ? "-" : "");
else if (hasNormal)
temp_tc = StringFromFormat("length(normal) == 0.0 ? vec4(0.0, 0.0, 1.0, 1.0) : vec4(normalize(%snormal), 1.0)", flipNormal ? "-" : "");
else
temp_tc = "vec4(0.0, 0.0, 1.0, 1.0)";
break;
case GE_PROJMAP_NORMAL: // Use non-normalized transformed normal as source
if (hasNormal)
if (hasNormalTess)
temp_tc = flipNormal ? "vec4(-tess.nrm, 1.0)" : "vec4(tess.nrm, 1.0)";
else if (hasNormal)
temp_tc = flipNormal ? "vec4(-normal, 1.0)" : "vec4(normal, 1.0)";
else
temp_tc = "vec4(0.0, 0.0, 1.0, 1.0)";