25 lines
451 B
GLSL
25 lines
451 B
GLSL
#version 440
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layout( location = 0 ) in vec2 coord;
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layout( location = 0 ) out vec4 fragColor;
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layout( std140, binding = 0 ) uniform buf
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{
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mat4 matrix;
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vec2 centerCoord;
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vec2 radius;
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float opacity;
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} ubuf;
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layout( binding = 1 ) uniform sampler2D colorRamp;
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vec4 colorAt( float value )
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{
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return texture( colorRamp, vec2( value, 0.0 ) );
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}
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void main()
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{
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fragColor = colorAt( length( coord / ubuf.radius ) ) * ubuf.opacity;
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}
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