29 lines
828 B
Text
29 lines
828 B
Text
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#version 330
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in vec2 pass_textureCoords;
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out vec4 out_color;
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uniform vec3 color;
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uniform sampler2D fontAtlas;
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const float width = 0.5;
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const float edge = 0.1;
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const float borderWidth = 0.0;
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const float borderEdge = 0.5;
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const vec2 offset = vec2(0, 0.0);
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const vec3 outlineColour = vec3(1.0,0.0,0.0);
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void main(void){
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float distance = 1.0 - texture(fontAtlas, pass_textureCoords).a;
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float alpha = 1.0 - smoothstep(width, width + edge, distance);
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float distance2 = 1.0 - texture(fontAtlas, pass_textureCoords + offset).a;
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float outlineAlpha = 1.0 - smoothstep(borderWidth, borderWidth + borderEdge, distance2);
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float overallAlpha = alpha + (1.0 - alpha) * outlineAlpha;
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vec3 overallColor = mix(outlineColour, color, alpha / overallAlpha);
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out_color = vec4(overallColor, overallAlpha);
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}
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