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Extended makeMaterials to handle UE4 specular maps

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This commit is contained in:
Robert Beckebans 2024-12-19 19:51:25 +01:00
parent e88d3bb10e
commit edc8a194fd
1 changed files with 50 additions and 3 deletions
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53
neo/renderer/Material.cpp
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@ -3960,7 +3960,7 @@ CONSOLE_COMMAND_SHIP( makeMaterials, "Make .mtr file from a models or textures f
return;
}
bool stripFolderFromMaterial = false;
bool ueMode = false;
idStr option;
for( int i = 1; i < args.Argc(); i++ )
@ -3970,7 +3970,7 @@ CONSOLE_COMMAND_SHIP( makeMaterials, "Make .mtr file from a models or textures f
if( option.IcmpPrefix( "Unreal" ) == 0 )
{
stripFolderFromMaterial = true;
ueMode = true;
}
}
@ -4043,8 +4043,9 @@ CONSOLE_COMMAND_SHIP( makeMaterials, "Make .mtr file from a models or textures f
materialName.CopyRange( baseName.c_str(), 0, baseName.Length() - 2 );
}
if( stripFolderFromMaterial )
if( ueMode )
{
// strip folder from material name
idStr matName;
materialName.ExtractFileName( matName );
materialName = matName;
@ -4255,6 +4256,52 @@ CONSOLE_COMMAND_SHIP( makeMaterials, "Make .mtr file from a models or textures f
}
}
if( ueMode )
{
// ===============================
// test UE4 specular map
idStrList specNames = { "_specular" };
byte* specPic = NULL;
int specWidth = 0;
int specHeight = 0;
for( auto& name : specNames )
{
ID_TIME_T testStamp;
idStr testName = baseName + name + resName;
R_LoadImage( testName, &specPic, &specWidth, &specHeight, &testStamp, true, NULL );
if( testStamp != FILE_NOT_FOUND_TIMESTAMP )
{
// swap bytes to RMAO order
int c = specWidth * specHeight * 4;
for( int j = 0 ; j < c ; j += 4 )
{
byte ao = specPic[j + 0];
byte roughness = specPic[j + 1];
byte metal = specPic[j + 2];
specPic[j + 0] = roughness;
specPic[j + 1] = metal;
specPic[j + 2] = ao;
// put middle 0.5 value into alpha channel for the case we want to add displacement later
specPic[j + 3] = 128;
}
idStr mergedName = baseName + "_rmao.png";
R_WritePNG( mergedName, static_cast<byte*>( specPic ), 4, specWidth, specHeight, "fs_basepath" );
mergedName.StripFileExtension();
mtrBuffer += va( "\trmaomap %s\n", mergedName.c_str() );
R_StaticFree( specPic );
break;
}
}
}
if( roughPic )
{
R_StaticFree( roughPic );