Romain Guy
ddef5ec3c4
Emissive was previously defined in exposure compensation stops, which was confusing to many. It is now a value in nits, with the alpha channel controlling how much the camera exposure affects the emissive. At 0, the emissive value is just added to the final pixel color, at 1 the emissive value is multiplied by the exposure just like with regular lights. The intensity of the emissive property can be computed from an exposure value (EV) easily with the following formula: emissive.rgb = emissive.rgb * pow(2.0, EV - 3.0); This formula is available as Exposure::luminance(float) already in Filament.
155 lines
3.8 KiB
GLSL
155 lines
3.8 KiB
GLSL
// Decide if we can skip lighting when dot(n, l) <= 0.0
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#if defined(SHADING_MODEL_CLOTH)
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#if !defined(MATERIAL_HAS_SUBSURFACE_COLOR)
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#define MATERIAL_CAN_SKIP_LIGHTING
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#endif
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#elif defined(SHADING_MODEL_SUBSURFACE)
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// Cannot skip lighting
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#else
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#define MATERIAL_CAN_SKIP_LIGHTING
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#endif
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struct MaterialInputs {
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vec4 baseColor;
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#if !defined(SHADING_MODEL_UNLIT)
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#if !defined(SHADING_MODEL_SPECULAR_GLOSSINESS)
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float roughness;
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#endif
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#if !defined(SHADING_MODEL_CLOTH) && !defined(SHADING_MODEL_SPECULAR_GLOSSINESS)
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float metallic;
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float reflectance;
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#endif
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float ambientOcclusion;
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#endif
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vec4 emissive;
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float clearCoat;
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float clearCoatRoughness;
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float anisotropy;
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vec3 anisotropyDirection;
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#if defined(SHADING_MODEL_SUBSURFACE) || defined(HAS_REFRACTION)
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float thickness;
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#endif
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#if defined(SHADING_MODEL_SUBSURFACE)
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float subsurfacePower;
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vec3 subsurfaceColor;
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#endif
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#if defined(SHADING_MODEL_CLOTH)
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vec3 sheenColor;
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#if defined(MATERIAL_HAS_SUBSURFACE_COLOR)
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vec3 subsurfaceColor;
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#endif
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#endif
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#if defined(SHADING_MODEL_SPECULAR_GLOSSINESS)
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vec3 specularColor;
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float glossiness;
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#endif
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#if defined(MATERIAL_HAS_NORMAL)
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vec3 normal;
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#endif
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#if defined(MATERIAL_HAS_BENT_NORMAL)
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vec3 bentNormal;
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#endif
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#if defined(MATERIAL_HAS_CLEAR_COAT) && defined(MATERIAL_HAS_CLEAR_COAT_NORMAL)
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vec3 clearCoatNormal;
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#endif
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#if defined(MATERIAL_HAS_POST_LIGHTING_COLOR)
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vec4 postLightingColor;
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#endif
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#if defined(HAS_REFRACTION)
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#if defined(MATERIAL_HAS_ABSORPTION)
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vec3 absorption;
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#endif
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#if defined(MATERIAL_HAS_TRANSMISSION)
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float transmission;
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#endif
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#if defined(MATERIAL_HAS_IOR)
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float ior;
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#endif
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#if defined(MATERIAL_HAS_MICRO_THICKNESS) && (REFRACTION_TYPE == REFRACTION_TYPE_THIN)
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float microThickness;
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#endif
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#endif
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};
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void initMaterial(out MaterialInputs material) {
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material.baseColor = vec4(1.0);
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#if !defined(SHADING_MODEL_UNLIT)
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#if !defined(SHADING_MODEL_SPECULAR_GLOSSINESS)
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material.roughness = 1.0;
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#endif
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#if !defined(SHADING_MODEL_CLOTH) && !defined(SHADING_MODEL_SPECULAR_GLOSSINESS)
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material.metallic = 0.0;
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material.reflectance = 0.5;
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#endif
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material.ambientOcclusion = 1.0;
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#endif
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material.emissive = vec4(vec3(0.0), 1.0);
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#if defined(MATERIAL_HAS_CLEAR_COAT)
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material.clearCoat = 1.0;
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material.clearCoatRoughness = 0.0;
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#endif
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#if defined(MATERIAL_HAS_ANISOTROPY)
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material.anisotropy = 0.0;
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material.anisotropyDirection = vec3(1.0, 0.0, 0.0);
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#endif
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#if defined(SHADING_MODEL_SUBSURFACE) || defined(HAS_REFRACTION)
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material.thickness = 0.5;
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#endif
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#if defined(SHADING_MODEL_SUBSURFACE)
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material.subsurfacePower = 12.234;
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material.subsurfaceColor = vec3(1.0);
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#endif
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#if defined(SHADING_MODEL_CLOTH)
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material.sheenColor = sqrt(material.baseColor.rgb);
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#if defined(MATERIAL_HAS_SUBSURFACE_COLOR)
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material.subsurfaceColor = vec3(0.0);
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#endif
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#endif
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#if defined(SHADING_MODEL_SPECULAR_GLOSSINESS)
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material.glossiness = 0.0;
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material.specularColor = vec3(0.0);
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#endif
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#if defined(MATERIAL_HAS_NORMAL)
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material.normal = vec3(0.0, 0.0, 1.0);
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#endif
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#if defined(MATERIAL_HAS_BENT_NORMAL)
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material.bentNormal = vec3(0.0, 0.0, 1.0);
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#endif
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#if defined(MATERIAL_HAS_CLEAR_COAT) && defined(MATERIAL_HAS_CLEAR_COAT_NORMAL)
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material.clearCoatNormal = vec3(0.0, 0.0, 1.0);
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#endif
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#if defined(MATERIAL_HAS_POST_LIGHTING_COLOR)
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material.postLightingColor = vec4(0.0);
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#endif
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#if defined(HAS_REFRACTION)
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#if defined(MATERIAL_HAS_ABSORPTION)
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material.absorption = vec3(0.0);
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#endif
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#if defined(MATERIAL_HAS_TRANSMISSION)
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material.transmission = 1.0;
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#endif
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#if defined(MATERIAL_HAS_IOR)
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material.ior = 1.5;
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#endif
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#if defined(MATERIAL_HAS_MICRO_THICKNESS) && (REFRACTION_TYPE == REFRACTION_TYPE_THIN)
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material.microThickness = 0.0;
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#endif
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#endif
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}
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