34 lines
1.1 KiB
GLSL
34 lines
1.1 KiB
GLSL
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in vec4 gl_FragCoord;
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#request uniform "prev" tex
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uniform sampler2D tex; /* screen texture */
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out vec4 fragment; /* output */
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#include "@circle.glsl"
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#include ":circle.glsl"
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void main() {
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fragment = texelFetch(tex, ivec2(gl_FragCoord.x, gl_FragCoord.y), 0);
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#if C_SMOOTH > 0
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#if _USE_ALPHA
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vec4
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a0 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 0)), 0),
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a1 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 1)), 0),
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a2 = texelFetch(tex, ivec2((gl_FragCoord.x + 0), (gl_FragCoord.y + 1)), 0),
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a3 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 0)), 0),
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a4 = texelFetch(tex, ivec2((gl_FragCoord.x - 1), (gl_FragCoord.y - 0)), 0),
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a5 = texelFetch(tex, ivec2((gl_FragCoord.x - 1), (gl_FragCoord.y - 1)), 0),
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a6 = texelFetch(tex, ivec2((gl_FragCoord.x - 0), (gl_FragCoord.y - 1)), 0),
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a7 = texelFetch(tex, ivec2((gl_FragCoord.x - 1), (gl_FragCoord.y - 0)), 0);
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vec4 avg = (a0 + a1 + a2 + a3 + a4 + a5 + a6 + a7) / 8.0;
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if (fragment.a == 0) {
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fragment = avg;
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}
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#endif
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#endif
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}
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