28 lines
1.1 KiB
HLSL
28 lines
1.1 KiB
HLSL
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#ifndef WMELON_RIM_LIGHTING
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#define WMELON_RIM_LIGHTING
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half3 RimLightingHalf(half rimMin, half rimMax, half4 rimColor, half3 viewDirection, half3 worldNormal) {
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half3 viewDir = normalize(viewDirection);
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half rimTemp = smoothstep(rimMin, rimMax, 1 - saturate(dot(viewDir, worldNormal)));
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return clamp(rimColor.rgb * rimColor.a * rimTemp, half3(0, 0, 0), half3(100, 100, 100));
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}
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half3 RimDirLightingHalf(half rimMin, half rimMax, half4 rimColor, half3 viewDirection, half3 worldNormal, half3 worldPos) {
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half3 viewDir = normalize(viewDirection);
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half rimTemp = smoothstep(rimMin, rimMax, 1 - saturate(dot(viewDir, worldNormal)));
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half3 lightDir = LightDirectionHalf(worldPos);
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return clamp(rimColor.rgb * rimColor.a * rimTemp, half3(0, 0, 0), half3(100, 100, 100)) * (saturate(dot(lightDir, worldNormal)));
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}
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float3 RimLightingFloat(float rimMin, float rimMax, float4 rimColor, float3 viewDirection, float3 worldNormal) {
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float3 viewDir = normalize(viewDirection);
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float rimTemp = smoothstep(rimMin, rimMax, 1 - saturate(dot(viewDir, worldNormal)));
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return clamp(rimColor.rgb * rimColor.a * rimTemp, float3(0, 0, 0), float3(100, 100, 100));
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}
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#endif
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