40 lines
1.6 KiB
YAML
40 lines
1.6 KiB
YAML
# Roughness-only PBR effect
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# This effect specifically handles roughness textures correctly
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# Ensures roughness texture is not confused with diffuse texture
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fragment:
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defines: |
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#define USE_ROUGHNESS_TEXTURE_ONLY 1
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#define DONT_FETCH_DEFAULT_TEXTURES 0
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inout: |
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uniform sampler2D p3d_Texture3; // Roughness texture only
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material: |
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// Only handle roughness texture, ignore others to avoid confusion
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#if USE_ROUGHNESS_TEXTURE_ONLY
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// Sample roughness from p3d_Texture3
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float sampled_roughness = texture(p3d_Texture3, texcoord).x;
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// Apply roughness: material_roughness * texture_value
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// This gives Blender-like behavior
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m.roughness = mInput.roughness * sampled_roughness;
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// Ensure minimum roughness to avoid rendering issues
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m.roughness = max(m.roughness, 0.01);
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// Keep other properties from material (no texture interference)
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m.basecolor = mInput.color; // Use material color, not texture
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m.metallic = mInput.metallic;
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m.specular_ior = mInput.specular_ior;
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m.shading_model_param0 = mInput.arbitrary0;
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#else
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// Fallback to material values only
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m.basecolor = mInput.color;
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m.roughness = mInput.roughness;
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m.metallic = mInput.metallic;
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m.specular_ior = mInput.specular_ior;
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m.shading_model_param0 = mInput.arbitrary0;
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#endif
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