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26 lines
758 B
GLSL
26 lines
758 B
GLSL
// Warning! Beware to use this shader. "discard" command may significally reduce performance.
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// Unfortunately some CG algorithms cannot be implemented on OpenGL ES 2.0 without discarding
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// fragments from depth buffer.
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varying vec3 v_radius;
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varying vec4 v_color;
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#ifdef SAMSUNG_GOOGLE_NEXUS
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uniform sampler2D u_colorTex;
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#endif
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const float aaPixelsCount = 2.5;
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void main()
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{
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vec4 finalColor = v_color;
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float smallRadius = v_radius.z - aaPixelsCount;
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float stepValue = smoothstep(smallRadius * smallRadius, v_radius.z * v_radius.z,
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dot(v_radius.xy, v_radius.xy));
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finalColor.a = finalColor.a * (1.0 - stepValue);
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if (finalColor.a < 0.01)
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discard;
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gl_FragColor = samsungGoogleNexusWorkaround(finalColor);
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}
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