61 lines
1.8 KiB
Plaintext
61 lines
1.8 KiB
Plaintext
shader_type spatial;
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render_mode unshaded, depth_draw_never, cull_disabled;
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uniform float width = 15.0;
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uniform float height = 15.0;
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uniform float density = 5.0;
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uniform float line_thickness = 0.1;
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uniform vec4 line_color : source_color = vec4( 0.2, 1.0, 1.0, 1.0 );
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uniform sampler2D depth_texture : source_color, hint_depth_texture;
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uniform vec4 color1: source_color = vec4(1,1,1,.1);
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uniform vec4 color2: source_color = vec4(1,1,1,1);
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uniform float threshold = .2;
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uniform float fresnel_sharpness = 1.0;
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uniform float fresnel_factor = 1.0;
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float hex_cells( vec2 uv )
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{
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float x = uv.x * width * density;
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float y = mod( floor(x), 2.0 ) * 0.5 + ( uv.y * height ) * density;
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vec2 base_chip = abs( vec2( 0.5 ) - mod( vec2( x, y ), 1.0 ) );
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return abs( max( base_chip.x * 1.5 + base_chip.y, base_chip.y * 2.0 ) - 1.0 );
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}
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void fragment( )
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{
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float depth = texture(depth_texture, SCREEN_UV).x;
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//vec3 ndc = vec3(SCREEN_UV, depth) * 2.0 - 1.0;
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vec3 ndc = vec3(SCREEN_UV * 2.0 - 1.0, depth);
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vec4 view = INV_PROJECTION_MATRIX * vec4(ndc, 1.0);
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view.xyz /= view.w;
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float linear_depth = -view.z;
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float object_depth = FRAGCOORD.z;
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//vec3 object_ndc = vec3(SCREEN_UV, object_depth) * 2.0 - 1.0;
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vec3 object_ndc = vec3(SCREEN_UV * 2.0 - 1.0, object_depth);
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vec4 object_view = INV_PROJECTION_MATRIX * vec4(object_ndc, 1.0);
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object_view.xyz /= object_view.w;
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float linear_object_depth = -object_view.z;
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float fresnel = pow(1.0 - dot(VIEW, NORMAL), fresnel_sharpness) * fresnel_factor;
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if (linear_depth - linear_object_depth > threshold) {
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float hex = hex_cells( UV );
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vec4 final_color = mix(
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color1,
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line_color,
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float( hex < line_thickness )
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);
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ALBEDO = final_color.rgb;
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ALPHA = final_color.a+(fresnel);
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}
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else {
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ALBEDO = color2.rgb;
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ALPHA = color2.a+fresnel;
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}
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} |