Jamie Greunbaum
8eaef49f2e
- Moved video screen into its own separate movie tent. - Adjusted stable post-processing volume. - Chickens are now at full volume. - Added button to toggle chickens off and on.
66 lines
1.9 KiB
HLSL
66 lines
1.9 KiB
HLSL
#ifndef FILAMENT_COMMON_MATERIAL
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#define FILAMENT_COMMON_MATERIAL
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#if defined(TARGET_MOBILE)
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// min roughness such that (MIN_PERCEPTUAL_ROUGHNESS^4) > 0 in fp16 (i.e. 2^(-14/4), rounded up)
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#define MIN_PERCEPTUAL_ROUGHNESS 0.089
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#define MIN_ROUGHNESS 0.007921
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#else
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#define MIN_PERCEPTUAL_ROUGHNESS 0.045
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#define MIN_ROUGHNESS 0.002025
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#endif
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#define MIN_N_DOT_V 1e-4
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float clampNoV(float NoV) {
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// Neubelt and Pettineo 2013, "Crafting a Next-gen Material Pipeline for The Order: 1886"
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return max(NoV, MIN_N_DOT_V);
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}
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float3 computeDiffuseColor(const float4 baseColor, float metallic) {
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return baseColor.rgb * (1.0 - metallic);
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}
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float3 computeF0(const float4 baseColor, float metallic, float reflectance) {
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return baseColor.rgb * metallic + (reflectance * (1.0 - metallic));
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}
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float computeDielectricF0(float reflectance) {
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return 0.16 * reflectance * reflectance;
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}
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float computeMetallicFromSpecularColor(const float3 specularColor) {
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return max3(specularColor);
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}
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float computeRoughnessFromGlossiness(float glossiness) {
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return 1.0 - glossiness;
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}
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float perceptualRoughnessToRoughness(float perceptualRoughness) {
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return perceptualRoughness * perceptualRoughness;
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}
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float roughnessToPerceptualRoughness(float roughness) {
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return sqrt(roughness);
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}
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float iorToF0(float transmittedIor, float incidentIor) {
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return sq((transmittedIor - incidentIor) / (transmittedIor + incidentIor));
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}
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float f0ToIor(float f0) {
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float r = sqrt(f0);
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return (1.0 + r) / (1.0 - r);
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}
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float3 f0ClearCoatToSurface(const float3 f0) {
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// Approximation of iorTof0(f0ToIor(f0), 1.5)
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// This assumes that the clear coat layer has an IOR of 1.5
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#if FILAMENT_QUALITY == FILAMENT_QUALITY_LOW
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return saturate(f0 * (f0 * 0.526868 + 0.529324) - 0.0482256);
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#else
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return saturate(f0 * (f0 * (0.941892 - 0.263008 * f0) + 0.346479) - 0.0285998);
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#endif
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}
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#endif // FILAMENT_COMMON_MATERIAL |