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39 lines
688 B
Plaintext
39 lines
688 B
Plaintext
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SHADER UTILITIES
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================
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These are little snippets which may be useful in writing your own shaders.
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>> basic way to slow the frame rate of a shader.
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window.zz=window.zz||0
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if(!(x+y)) zz++
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if (lex.bg != 1 && !(zz % 4)) {
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...
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}
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>> handy for brushes - use color to mask brush shape
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lex.opacity = lex.bg == colors.black ? 0 : 1
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Tip: Set to "animate brush", then use option+shift (alt+shift) to
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copy color from the canvas. Brush will have the "shape" of the
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copied color only. Can be a cool effect when used with fg/bg only.
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>> copy color from canvas at x/y
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lex.assign( canvas.get(x,y) )
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>> animate canvas up and to the left..
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lex.assign( canvas.get(x+1,y+1) )
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