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20 lines
567 B
20 lines
567 B
uniform sampler2D sampler; |
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uniform float opacity; |
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uniform float brightness; |
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uniform float saturation; |
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varying vec2 varyingTexCoords; |
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void main() |
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{ |
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vec4 tex = texture2D(sampler, varyingTexCoords); |
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if( saturation != 1.0 ) |
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{ |
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vec3 desaturated = tex.rgb * vec3( 0.30, 0.59, 0.11 ); |
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desaturated = vec3( dot( desaturated, tex.rgb )); |
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tex.rgb = tex.rgb * vec3( saturation ) + desaturated * vec3( 1.0 - saturation ); |
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} |
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// tex.rgb = tex.rgb * opacity * brightness; |
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// tex.a = tex.a * opacity; |
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gl_FragColor = tex; |
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}
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