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Lib Alpha - Shader API
lib-alpha.glsl
Public Functions: alphaKill
import lib-sampler.glsl
import lib-random.glsl
import lib-sampler.glsl
import lib-random.glsl
import lib-sampler.glsl import lib-random.glsl
Opacity map, provided by the engine.
//: param auto channel_opacity
uniform SamplerSparse opacity_tex;
//: param auto channel_opacity
uniform SamplerSparse opacity_tex;
//: param auto channel_opacity uniform SamplerSparse opacity_tex;
Alpha test threshold.
//: param custom {
//: "default": 0.33,
//: "label": "Alpha threshold",
//: "min": 0.0,
//: "max": 1.0,
//: "group": "Common Parameters"
//: }
uniform float alpha_threshold;
//: param custom {
//: "default": 0.33,
//: "label": "Alpha threshold",
//: "min": 0.0,
//: "max": 1.0,
//: "group": "Common Parameters"
//: }
uniform float alpha_threshold;
//: param custom { //: "default": 0.33, //: "label": "Alpha threshold", //: "min": 0.0, //: "max": 1.0, //: "group": "Common Parameters" //: } uniform float alpha_threshold;
Alpha test dithering.
//: param custom {
//: "default": false,
//: "label": "Alpha dithering",
//: "group": "Common Parameters"
//: }
uniform bool alpha_dither;
//: param custom {
//: "default": false,
//: "label": "Alpha dithering",
//: "group": "Common Parameters"
//: }
uniform bool alpha_dither;
//: param custom { //: "default": false, //: "label": "Alpha dithering", //: "group": "Common Parameters" //: } uniform bool alpha_dither;
Emulate alpha test : discard current fragment if its opacity is below a user defined threshold. Should be called AFTER texture sampling calls: it can break derivatives
void alphaKill(float alpha)
{
float threshold = alpha_dither ? getBlueNoiseThresholdTemporal() : alpha_threshold;
if (alpha < threshold) discard;
}
void alphaKill(SparseCoord coord)
{
alphaKill(getOpacity(opacity_tex, coord));
}
void alphaKill(float alpha)
{
float threshold = alpha_dither ? getBlueNoiseThresholdTemporal() : alpha_threshold;
if (alpha < threshold) discard;
}
void alphaKill(SparseCoord coord)
{
alphaKill(getOpacity(opacity_tex, coord));
}
void alphaKill(float alpha) { float threshold = alpha_dither ? getBlueNoiseThresholdTemporal() : alpha_threshold; if (alpha < threshold) discard; } void alphaKill(SparseCoord coord) { alphaKill(getOpacity(opacity_tex, coord)); }