73 lines
2.2 KiB
Plaintext
73 lines
2.2 KiB
Plaintext
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shader_type spatial;
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render_mode blend_mix, depth_draw_opaque, cull_back, diffuse_burley, specular_schlick_ggx, unshaded;
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stencil_mode write, compare_less_or_equal, 1;
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uniform vec4 albedo : source_color;
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uniform sampler2D texture_albedo : source_color, filter_linear_mipmap, repeat_enable;
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uniform bool useNormalMap = false;
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uniform bool flipNormalMapZ = true;
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uniform sampler2D texture_normal : filter_linear_mipmap, repeat_enable;
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uniform float uvScale;
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uniform float uvOffset;
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uniform float uvSpeed;
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uniform vec2 highlightDirection1;
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uniform float highlightSharpness1: hint_range(0.0, 1.0) = 0.9;
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uniform float highlightSize1: hint_range(0.0, 1.0) = 0.1;
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uniform vec2 highlightDirection2;
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uniform float highlightSharpness2: hint_range(0.0, 1.0) = 0.9;
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uniform float highlightSize2: hint_range(0.0, 1.0) = 0.1;
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varying float albedoU;
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void vertex()
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{
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albedoU = VERTEX.y * uvScale + uvOffset + uvSpeed * TIME;
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}
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vec3 computeNormal( vec3 t, vec3 b, vec3 n, vec2 _UV )
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{
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vec3 sampledNormal = texture( texture_normal, _UV ).xyz * 2.0 - 1.0;
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if ( flipNormalMapZ )
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{
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sampledNormal.z *= -1.0;
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}
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return normalize( mat3( t, b, n ) * sampledNormal );
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}
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float computeHighlight( vec3 lightDirection, vec3 _NORMAL, float size, float sharpness )
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{
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float invSize = 1.0 - pow( size, 3 );
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float invSharpness = 1.0 - pow( sharpness, 0.1 );
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float lowerEdge = invSize - invSharpness;
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float upperEdge = invSize + invSharpness;
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return smoothstep( lowerEdge, upperEdge, dot( _NORMAL, normalize( lightDirection ) ) );
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}
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void fragment()
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{
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vec2 base_uv = UV;
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vec4 albedo_tex = texture(texture_albedo, vec2( albedoU, 0.0 ));
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ALBEDO = albedo.rgb * albedo_tex.rgb;
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vec3 combinedNormal = NORMAL;
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if ( useNormalMap )
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{
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combinedNormal = computeNormal( TANGENT, BINORMAL, NORMAL, UV );
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}
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float highlight1 = computeHighlight( vec3( highlightDirection1, 1.0 ), combinedNormal, highlightSize1, highlightSharpness1 );
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float highlight2 = computeHighlight( vec3( highlightDirection2, 1.0 ), combinedNormal, highlightSize2, highlightSharpness2 );
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float highlightsCombined = max( highlight1, highlight2 );
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ALBEDO = mix( ALBEDO, vec3( 1.0 ), highlightsCombined );
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}
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