@animech-public/playcanvas
Version:
PlayCanvas WebGL game engine
2 lines (1 loc) • 2.21 kB
JavaScript
var t="\nuniform sampler2D texture_msdfMap;\n#ifdef GL_OES_standard_derivatives\n#define USE_FWIDTH\n#endif\n#ifdef GL2\n#define USE_FWIDTH\n#endif\nfloat median(float r, float g, float b) {\n\treturn max(min(r, g), min(max(r, g), b));\n}\nfloat map (float min, float max, float v) {\n\treturn (v - min) / (max - min);\n}\nuniform float font_sdfIntensity;\nuniform float font_pxrange;\nuniform float font_textureWidth;\n#ifdef UNIFORM_TEXT_PARAMETERS\nuniform vec4 outline_color;\nuniform float outline_thickness;\nuniform vec4 shadow_color;\nuniform vec2 shadow_offset;\n#else\nvarying vec4 outline_color;\nvarying float outline_thickness;\nvarying vec4 shadow_color;\nvarying vec2 shadow_offset;\n#endif\nvec4 applyMsdf(vec4 color) {\n\tvec3 tsample = texture2D(texture_msdfMap, vUv0).rgb;\n\tvec2 uvShdw = vUv0 - shadow_offset;\n\tvec3 ssample = texture2D(texture_msdfMap, uvShdw).rgb;\n\tfloat sigDist = median(tsample.r, tsample.g, tsample.b);\n\tfloat sigDistShdw = median(ssample.r, ssample.g, ssample.b);\n\tfloat smoothingMax = 0.2;\n\t#ifdef USE_FWIDTH\n\tvec2 w = fwidth(vUv0);\n\tfloat smoothing = clamp(w.x * font_textureWidth / font_pxrange, 0.0, smoothingMax);\n\t#else\n\tfloat font_size = 16.0;\n\tfloat smoothing = clamp(font_pxrange / font_size, 0.0, smoothingMax);\n\t#endif\n\tfloat mapMin = 0.05;\n\tfloat mapMax = clamp(1.0 - font_sdfIntensity, mapMin, 1.0);\n\tfloat sigDistInner = map(mapMin, mapMax, sigDist);\n\tfloat sigDistOutline = map(mapMin, mapMax, sigDist + outline_thickness);\n\tsigDistShdw = map(mapMin, mapMax, sigDistShdw + outline_thickness);\n\tfloat center = 0.5;\n\tfloat inside = smoothstep(center-smoothing, center+smoothing, sigDistInner);\n\tfloat outline = smoothstep(center-smoothing, center+smoothing, sigDistOutline);\n\tfloat shadow = smoothstep(center-smoothing, center+smoothing, sigDistShdw);\n\tvec4 tcolor = (outline > inside) ? outline * vec4(outline_color.a * outline_color.rgb, outline_color.a) : vec4(0.0);\n\ttcolor = mix(tcolor, color, inside);\n\tvec4 scolor = (shadow > outline) ? shadow * vec4(shadow_color.a * shadow_color.rgb, shadow_color.a) : tcolor;\n\ttcolor = mix(scolor, tcolor, outline);\n\t\n\treturn tcolor;\n}\n";export{t as default};